From aace0aec49a31e298994042f62c007e10b64ca14 Mon Sep 17 00:00:00 2001 From: Chris Wulff Date: Tue, 23 Apr 2024 14:09:04 +0000 Subject: [PATCH 001/145] usb: gadget: f_uac1: Expose all string descriptors through configfs. This makes all string descriptors configurable for the UAC1 gadget so the user can configure names of terminals/controls/alt modes. Signed-off-by: Chris Wulff Link: https://lore.kernel.org/r/CO1PR17MB541911B0C80D21E4B575E48CE1112@CO1PR17MB5419.namprd17.prod.outlook.com Signed-off-by: Greg Kroah-Hartman --- .../ABI/testing/configfs-usb-gadget-uac1 | 12 +++ Documentation/usb/gadget-testing.rst | 12 +++ drivers/usb/gadget/function/f_uac1.c | 75 +++++++++++++++---- drivers/usb/gadget/function/u_uac1.h | 16 +++- 4 files changed, 98 insertions(+), 17 deletions(-) diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uac1 b/Documentation/ABI/testing/configfs-usb-gadget-uac1 index c4ba92f004c3..cf93b98b274d 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-uac1 +++ b/Documentation/ABI/testing/configfs-usb-gadget-uac1 @@ -30,4 +30,16 @@ Description: req_number the number of pre-allocated requests for both capture and playback function_name name of the interface + p_it_name playback input terminal name + p_it_ch_name playback channels name + p_ot_name playback output terminal name + p_fu_name playback functional unit name + p_alt0_name playback alt mode 0 name + p_alt1_name playback alt mode 1 name + c_it_name capture input terminal name + c_it_ch_name capture channels name + c_ot_name capture output terminal name + c_fu_name capture functional unit name + c_alt0_name capture alt mode 0 name + c_alt1_name capture alt mode 1 name ===================== ======================================= diff --git a/Documentation/usb/gadget-testing.rst b/Documentation/usb/gadget-testing.rst index b086c7ab72f0..a89b49e639c3 100644 --- a/Documentation/usb/gadget-testing.rst +++ b/Documentation/usb/gadget-testing.rst @@ -957,6 +957,18 @@ The uac1 function provides these attributes in its function directory: req_number the number of pre-allocated requests for both capture and playback function_name name of the interface + p_it_name playback input terminal name + p_it_ch_name playback channels name + p_ot_name playback output terminal name + p_fu_name playback functional unit name + p_alt0_name playback alt mode 0 name + p_alt1_name playback alt mode 1 name + c_it_name capture input terminal name + c_it_ch_name capture channels name + c_ot_name capture output terminal name + c_fu_name capture functional unit name + c_alt0_name capture alt mode 0 name + c_alt1_name capture alt mode 1 name ================ ==================================================== The attributes have sane default values. diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c index 2b9fb4daa806..06a220fb7a87 100644 --- a/drivers/usb/gadget/function/f_uac1.c +++ b/drivers/usb/gadget/function/f_uac1.c @@ -377,24 +377,10 @@ enum { STR_AS_OUT_IF_ALT1, STR_AS_IN_IF_ALT0, STR_AS_IN_IF_ALT1, + NUM_STR_DESCRIPTORS, }; -static struct usb_string strings_uac1[] = { - /* [STR_AC_IF].s = DYNAMIC, */ - [STR_USB_OUT_IT].s = "Playback Input terminal", - [STR_USB_OUT_IT_CH_NAMES].s = "Playback Channels", - [STR_IO_OUT_OT].s = "Playback Output terminal", - [STR_IO_IN_IT].s = "Capture Input terminal", - [STR_IO_IN_IT_CH_NAMES].s = "Capture Channels", - [STR_USB_IN_OT].s = "Capture Output terminal", - [STR_FU_IN].s = "Capture Volume", - [STR_FU_OUT].s = "Playback Volume", - [STR_AS_OUT_IF_ALT0].s = "Playback Inactive", - [STR_AS_OUT_IF_ALT1].s = "Playback Active", - [STR_AS_IN_IF_ALT0].s = "Capture Inactive", - [STR_AS_IN_IF_ALT1].s = "Capture Active", - { }, -}; +static struct usb_string strings_uac1[NUM_STR_DESCRIPTORS + 1] = {}; static struct usb_gadget_strings str_uac1 = { .language = 0x0409, /* en-us */ @@ -1265,6 +1251,20 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) strings_uac1[STR_AC_IF].s = audio_opts->function_name; + strings_uac1[STR_USB_OUT_IT].s = audio_opts->p_it_name; + strings_uac1[STR_USB_OUT_IT_CH_NAMES].s = audio_opts->p_it_ch_name; + strings_uac1[STR_IO_OUT_OT].s = audio_opts->p_ot_name; + strings_uac1[STR_FU_OUT].s = audio_opts->p_fu_name; + strings_uac1[STR_AS_OUT_IF_ALT0].s = audio_opts->p_alt0_name; + strings_uac1[STR_AS_OUT_IF_ALT1].s = audio_opts->p_alt1_name; + + strings_uac1[STR_IO_IN_IT].s = audio_opts->c_it_name; + strings_uac1[STR_IO_IN_IT_CH_NAMES].s = audio_opts->c_it_ch_name; + strings_uac1[STR_USB_IN_OT].s = audio_opts->c_ot_name; + strings_uac1[STR_FU_IN].s = audio_opts->c_fu_name; + strings_uac1[STR_AS_IN_IF_ALT0].s = audio_opts->c_alt0_name; + strings_uac1[STR_AS_IN_IF_ALT1].s = audio_opts->c_alt1_name; + us = usb_gstrings_attach(cdev, uac1_strings, ARRAY_SIZE(strings_uac1)); if (IS_ERR(us)) return PTR_ERR(us); @@ -1681,8 +1681,23 @@ UAC1_ATTRIBUTE(bool, c_volume_present); UAC1_ATTRIBUTE(s16, c_volume_min); UAC1_ATTRIBUTE(s16, c_volume_max); UAC1_ATTRIBUTE(s16, c_volume_res); + UAC1_ATTRIBUTE_STRING(function_name); +UAC1_ATTRIBUTE_STRING(p_it_name); +UAC1_ATTRIBUTE_STRING(p_it_ch_name); +UAC1_ATTRIBUTE_STRING(p_ot_name); +UAC1_ATTRIBUTE_STRING(p_fu_name); +UAC1_ATTRIBUTE_STRING(p_alt0_name); +UAC1_ATTRIBUTE_STRING(p_alt1_name); + +UAC1_ATTRIBUTE_STRING(c_it_name); +UAC1_ATTRIBUTE_STRING(c_it_ch_name); +UAC1_ATTRIBUTE_STRING(c_ot_name); +UAC1_ATTRIBUTE_STRING(c_fu_name); +UAC1_ATTRIBUTE_STRING(c_alt0_name); +UAC1_ATTRIBUTE_STRING(c_alt1_name); + static struct configfs_attribute *f_uac1_attrs[] = { &f_uac1_opts_attr_c_chmask, &f_uac1_opts_attr_c_srate, @@ -1706,6 +1721,20 @@ static struct configfs_attribute *f_uac1_attrs[] = { &f_uac1_opts_attr_function_name, + &f_uac1_opts_attr_p_it_name, + &f_uac1_opts_attr_p_it_ch_name, + &f_uac1_opts_attr_p_ot_name, + &f_uac1_opts_attr_p_fu_name, + &f_uac1_opts_attr_p_alt0_name, + &f_uac1_opts_attr_p_alt1_name, + + &f_uac1_opts_attr_c_it_name, + &f_uac1_opts_attr_c_it_ch_name, + &f_uac1_opts_attr_c_ot_name, + &f_uac1_opts_attr_c_fu_name, + &f_uac1_opts_attr_c_alt0_name, + &f_uac1_opts_attr_c_alt1_name, + NULL, }; @@ -1760,6 +1789,20 @@ static struct usb_function_instance *f_audio_alloc_inst(void) scnprintf(opts->function_name, sizeof(opts->function_name), "AC Interface"); + scnprintf(opts->p_it_name, sizeof(opts->p_it_name), "Playback Input terminal"); + scnprintf(opts->p_it_ch_name, sizeof(opts->p_it_ch_name), "Playback Channels"); + scnprintf(opts->p_ot_name, sizeof(opts->p_ot_name), "Playback Output terminal"); + scnprintf(opts->p_fu_name, sizeof(opts->p_fu_name), "Playback Volume"); + scnprintf(opts->p_alt0_name, sizeof(opts->p_alt0_name), "Playback Inactive"); + scnprintf(opts->p_alt1_name, sizeof(opts->p_alt1_name), "Playback Active"); + + scnprintf(opts->c_it_name, sizeof(opts->c_it_name), "Capture Input terminal"); + scnprintf(opts->c_it_ch_name, sizeof(opts->c_it_ch_name), "Capture Channels"); + scnprintf(opts->c_ot_name, sizeof(opts->c_ot_name), "Capture Output terminal"); + scnprintf(opts->c_fu_name, sizeof(opts->c_fu_name), "Capture Volume"); + scnprintf(opts->c_alt0_name, sizeof(opts->c_alt0_name), "Capture Inactive"); + scnprintf(opts->c_alt1_name, sizeof(opts->c_alt1_name), "Capture Active"); + return &opts->func_inst; } diff --git a/drivers/usb/gadget/function/u_uac1.h b/drivers/usb/gadget/function/u_uac1.h index f7a616760e31..67784de9782b 100644 --- a/drivers/usb/gadget/function/u_uac1.h +++ b/drivers/usb/gadget/function/u_uac1.h @@ -52,7 +52,21 @@ struct f_uac1_opts { int req_number; unsigned bound:1; - char function_name[32]; + char function_name[USB_MAX_STRING_LEN]; + + char p_it_name[USB_MAX_STRING_LEN]; + char p_it_ch_name[USB_MAX_STRING_LEN]; + char p_ot_name[USB_MAX_STRING_LEN]; + char p_fu_name[USB_MAX_STRING_LEN]; + char p_alt0_name[USB_MAX_STRING_LEN]; + char p_alt1_name[USB_MAX_STRING_LEN]; + + char c_it_name[USB_MAX_STRING_LEN]; + char c_it_ch_name[USB_MAX_STRING_LEN]; + char c_ot_name[USB_MAX_STRING_LEN]; + char c_fu_name[USB_MAX_STRING_LEN]; + char c_alt0_name[USB_MAX_STRING_LEN]; + char c_alt1_name[USB_MAX_STRING_LEN]; struct mutex lock; int refcnt; From ac7c73c4df624331d4871a61ced1d7a6350102b1 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Fri, 12 Jul 2024 14:09:47 +0200 Subject: [PATCH 002/145] USB: ohci-ppc-of: Drop ohci-littledian compatible The "ohci-littledian" compatible has typo (edian->endian) and is not used in in-kernel DTS. Considering the typo and that it is an very old driver (~2006), drop the compatible. Suggested-by: Rob Herring Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20240712120947.86181-1-krzysztof.kozlowski@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-ppc-of.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/usb/host/ohci-ppc-of.c b/drivers/usb/host/ohci-ppc-of.c index f64bfe5f4d4d..a6be061f8653 100644 --- a/drivers/usb/host/ohci-ppc-of.c +++ b/drivers/usb/host/ohci-ppc-of.c @@ -202,10 +202,6 @@ static const struct of_device_id ohci_hcd_ppc_of_match[] = { }, #endif #ifdef CONFIG_USB_OHCI_HCD_PPC_OF_LE - { - .name = "usb", - .compatible = "ohci-littledian", - }, { .name = "usb", .compatible = "ohci-le", From bb548c1654db4a6f1a42657ed9068237e0c044b5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C5=81ukasz=20Bartosik?= Date: Mon, 15 Jul 2024 13:11:30 +0000 Subject: [PATCH 003/145] usbip: Add USB_SPEED_SUPER_PLUS as valid arg MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add USB_SPEED_SUPER_PLUS as valid argument to allow to attach USB SuperSpeed+ devices. Update speed of virtual HC to SuperSpeed+ as well. Signed-off-by: Łukasz Bartosik Acked-by: Shuah Khan Link: https://lore.kernel.org/r/20240715131131.3876380-1-ukaszb@chromium.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/usbip/vhci_hcd.c | 36 +++++++++++++++++----------------- drivers/usb/usbip/vhci_sysfs.c | 3 ++- 2 files changed, 20 insertions(+), 19 deletions(-) diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c index 82650c11e451..fff27c529513 100644 --- a/drivers/usb/usbip/vhci_hcd.c +++ b/drivers/usb/usbip/vhci_hcd.c @@ -372,7 +372,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, } switch (wValue) { case USB_PORT_FEAT_SUSPEND: - if (hcd->speed == HCD_USB3) { + if (hcd->speed >= HCD_USB3) { pr_err(" ClearPortFeature: USB_PORT_FEAT_SUSPEND req not " "supported for USB 3.0 roothub\n"); goto error; @@ -388,7 +388,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, case USB_PORT_FEAT_POWER: usbip_dbg_vhci_rh( " ClearPortFeature: USB_PORT_FEAT_POWER\n"); - if (hcd->speed == HCD_USB3) + if (hcd->speed >= HCD_USB3) vhci_hcd->port_status[rhport] &= ~USB_SS_PORT_STAT_POWER; else vhci_hcd->port_status[rhport] &= ~USB_PORT_STAT_POWER; @@ -404,19 +404,19 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, break; case GetHubDescriptor: usbip_dbg_vhci_rh(" GetHubDescriptor\n"); - if (hcd->speed == HCD_USB3 && + if (hcd->speed >= HCD_USB3 && (wLength < USB_DT_SS_HUB_SIZE || wValue != (USB_DT_SS_HUB << 8))) { pr_err("Wrong hub descriptor type for USB 3.0 roothub.\n"); goto error; } - if (hcd->speed == HCD_USB3) + if (hcd->speed >= HCD_USB3) ss_hub_descriptor((struct usb_hub_descriptor *) buf); else hub_descriptor((struct usb_hub_descriptor *) buf); break; case DeviceRequest | USB_REQ_GET_DESCRIPTOR: - if (hcd->speed != HCD_USB3) + if (hcd->speed < HCD_USB3) goto error; if ((wValue >> 8) != USB_DT_BOS) @@ -503,7 +503,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, case USB_PORT_FEAT_LINK_STATE: usbip_dbg_vhci_rh( " SetPortFeature: USB_PORT_FEAT_LINK_STATE\n"); - if (hcd->speed != HCD_USB3) { + if (hcd->speed < HCD_USB3) { pr_err("USB_PORT_FEAT_LINK_STATE req not " "supported for USB 2.0 roothub\n"); goto error; @@ -521,7 +521,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, usbip_dbg_vhci_rh( " SetPortFeature: USB_PORT_FEAT_U2_TIMEOUT\n"); /* TODO: add suspend/resume support! */ - if (hcd->speed != HCD_USB3) { + if (hcd->speed < HCD_USB3) { pr_err("USB_PORT_FEAT_U1/2_TIMEOUT req not " "supported for USB 2.0 roothub\n"); goto error; @@ -531,7 +531,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, usbip_dbg_vhci_rh( " SetPortFeature: USB_PORT_FEAT_SUSPEND\n"); /* Applicable only for USB2.0 hub */ - if (hcd->speed == HCD_USB3) { + if (hcd->speed >= HCD_USB3) { pr_err("USB_PORT_FEAT_SUSPEND req not " "supported for USB 3.0 roothub\n"); goto error; @@ -551,7 +551,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, pr_err("invalid port number %d\n", wIndex); goto error; } - if (hcd->speed == HCD_USB3) + if (hcd->speed >= HCD_USB3) vhci_hcd->port_status[rhport] |= USB_SS_PORT_STAT_POWER; else vhci_hcd->port_status[rhport] |= USB_PORT_STAT_POWER; @@ -564,7 +564,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, goto error; } /* Applicable only for USB3.0 hub */ - if (hcd->speed != HCD_USB3) { + if (hcd->speed < HCD_USB3) { pr_err("USB_PORT_FEAT_BH_PORT_RESET req not " "supported for USB 2.0 roothub\n"); goto error; @@ -578,7 +578,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, goto error; } /* if it's already enabled, disable */ - if (hcd->speed == HCD_USB3) { + if (hcd->speed >= HCD_USB3) { vhci_hcd->port_status[rhport] = 0; vhci_hcd->port_status[rhport] = (USB_SS_PORT_STAT_POWER | @@ -602,7 +602,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, } if (wValue >= 32) goto error; - if (hcd->speed == HCD_USB3) { + if (hcd->speed >= HCD_USB3) { if ((vhci_hcd->port_status[rhport] & USB_SS_PORT_STAT_POWER) != 0) { vhci_hcd->port_status[rhport] |= (1 << wValue); @@ -616,7 +616,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, break; case GetPortErrorCount: usbip_dbg_vhci_rh(" GetPortErrorCount\n"); - if (hcd->speed != HCD_USB3) { + if (hcd->speed < HCD_USB3) { pr_err("GetPortErrorCount req not " "supported for USB 2.0 roothub\n"); goto error; @@ -626,7 +626,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, break; case SetHubDepth: usbip_dbg_vhci_rh(" SetHubDepth\n"); - if (hcd->speed != HCD_USB3) { + if (hcd->speed < HCD_USB3) { pr_err("SetHubDepth req not supported for " "USB 2.0 roothub\n"); goto error; @@ -646,7 +646,7 @@ error: if (!invalid_rhport) { dump_port_status_diff(prev_port_status[rhport], vhci_hcd->port_status[rhport], - hcd->speed == HCD_USB3); + hcd->speed >= HCD_USB3); } } usbip_dbg_vhci_rh(" bye\n"); @@ -1154,8 +1154,8 @@ static int vhci_setup(struct usb_hcd *hcd) } else { vhci->vhci_hcd_ss = hcd_to_vhci_hcd(hcd); vhci->vhci_hcd_ss->vhci = vhci; - hcd->speed = HCD_USB3; - hcd->self.root_hub->speed = USB_SPEED_SUPER; + hcd->speed = HCD_USB31; + hcd->self.root_hub->speed = USB_SPEED_SUPER_PLUS; } /* @@ -1316,7 +1316,7 @@ static const struct hc_driver vhci_hc_driver = { .product_desc = driver_desc, .hcd_priv_size = sizeof(struct vhci_hcd), - .flags = HCD_USB3 | HCD_SHARED, + .flags = HCD_USB31 | HCD_SHARED, .reset = vhci_setup, .start = vhci_start, diff --git a/drivers/usb/usbip/vhci_sysfs.c b/drivers/usb/usbip/vhci_sysfs.c index e2847cd3e6e3..d5865460e82d 100644 --- a/drivers/usb/usbip/vhci_sysfs.c +++ b/drivers/usb/usbip/vhci_sysfs.c @@ -283,6 +283,7 @@ static int valid_args(__u32 *pdev_nr, __u32 *rhport, case USB_SPEED_HIGH: case USB_SPEED_WIRELESS: case USB_SPEED_SUPER: + case USB_SPEED_SUPER_PLUS: break; default: pr_err("Failed attach request for unsupported USB speed: %s\n", @@ -349,7 +350,7 @@ static ssize_t attach_store(struct device *dev, struct device_attribute *attr, vhci_hcd = hcd_to_vhci_hcd(hcd); vhci = vhci_hcd->vhci; - if (speed == USB_SPEED_SUPER) + if (speed >= USB_SPEED_SUPER) vdev = &vhci->vhci_hcd_ss->vdev[rhport]; else vdev = &vhci->vhci_hcd_hs->vdev[rhport]; From acabfb1b79802e8a7fc17c7f73271e2250fead0c Mon Sep 17 00:00:00 2001 From: Chen Ni Date: Mon, 15 Jul 2024 15:39:47 +0800 Subject: [PATCH 004/145] usb: typec: ucsi: glink: Remove unnecessary semicolon Remove unnecessary semicolon at the end of the switch statement. This is detected by coccinelle. Signed-off-by: Chen Ni Reviewed-by: Dmitry Baryshkov Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240715073947.4028319-1-nichen@iscas.ac.cn Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/ucsi/ucsi_glink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/typec/ucsi/ucsi_glink.c b/drivers/usb/typec/ucsi/ucsi_glink.c index 16c328497e0b..459a5af02910 100644 --- a/drivers/usb/typec/ucsi/ucsi_glink.c +++ b/drivers/usb/typec/ucsi/ucsi_glink.c @@ -263,7 +263,7 @@ static void pmic_glink_ucsi_callback(const void *data, size_t len, void *priv) case UC_UCSI_USBC_NOTIFY_IND: schedule_work(&ucsi->notify_work); break; - }; + } } static void pmic_glink_ucsi_pdr_notify(void *priv, int state) From 4e33059ed59796eab07405f5effbb33bb4b3318f Mon Sep 17 00:00:00 2001 From: Michael Walle Date: Tue, 30 Jul 2024 21:38:40 +0200 Subject: [PATCH 005/145] usb: gadget: u_serial: add .get_icount() support Add icount support for the transmitting and receiving characters. This will make the tty LED trigger work with the ttyGS devices. Signed-off-by: Michael Walle Link: https://lore.kernel.org/r/20240730193840.2580358-1-mwalle@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/function/u_serial.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c index eec7f7a2e40f..bbc5f7617a13 100644 --- a/drivers/usb/gadget/function/u_serial.c +++ b/drivers/usb/gadget/function/u_serial.c @@ -28,6 +28,7 @@ #include #include #include +#include #include "u_serial.h" @@ -126,6 +127,7 @@ struct gs_port { wait_queue_head_t close_wait; bool suspended; /* port suspended */ bool start_delayed; /* delay start when suspended */ + struct async_icount icount; /* REVISIT this state ... */ struct usb_cdc_line_coding port_line_coding; /* 8-N-1 etc */ @@ -257,6 +259,7 @@ __acquires(&port->port_lock) break; } do_tty_wake = true; + port->icount.tx += len; req->length = len; list_del(&req->list); @@ -408,6 +411,7 @@ static void gs_rx_push(struct work_struct *work) size -= n; } + port->icount.rx += size; count = tty_insert_flip_string(&port->port, packet, size); if (count) @@ -851,6 +855,23 @@ static int gs_break_ctl(struct tty_struct *tty, int duration) return status; } +static int gs_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct gs_port *port = tty->driver_data; + struct async_icount cnow; + unsigned long flags; + + spin_lock_irqsave(&port->port_lock, flags); + cnow = port->icount; + spin_unlock_irqrestore(&port->port_lock, flags); + + icount->rx = cnow.rx; + icount->tx = cnow.tx; + + return 0; +} + static const struct tty_operations gs_tty_ops = { .open = gs_open, .close = gs_close, @@ -861,6 +882,7 @@ static const struct tty_operations gs_tty_ops = { .chars_in_buffer = gs_chars_in_buffer, .unthrottle = gs_unthrottle, .break_ctl = gs_break_ctl, + .get_icount = gs_get_icount, }; /*-------------------------------------------------------------------------*/ From db1c0bc6534a60adc65efa80f298dffb02274076 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 31 Jul 2024 07:44:38 +0200 Subject: [PATCH 006/145] usb: misc: eud: switch to fallback compatible for device matching The bindings require two compatibles to be used: qcom,sc7280-eud followed by fallback qcom,eud. The convention is to use fallback compatible in OF device ID tables, unless some device-specific quirks are needed. This will also simplify matching any new devices - they will use existing OF device ID entry, instead of adding a new one. Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20240731054438.9073-1-krzysztof.kozlowski@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/qcom_eud.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/misc/qcom_eud.c b/drivers/usb/misc/qcom_eud.c index 26e9b8749d8a..19906301a4eb 100644 --- a/drivers/usb/misc/qcom_eud.c +++ b/drivers/usb/misc/qcom_eud.c @@ -232,7 +232,7 @@ static void eud_remove(struct platform_device *pdev) } static const struct of_device_id eud_dt_match[] = { - { .compatible = "qcom,sc7280-eud" }, + { .compatible = "qcom,eud" }, { } }; MODULE_DEVICE_TABLE(of, eud_dt_match); From 17668d7bb84e4b4d6aa0196f89273fd84e300a5c Mon Sep 17 00:00:00 2001 From: Varadarajan Narayanan Date: Tue, 23 Jul 2024 15:31:50 +0530 Subject: [PATCH 007/145] dt-bindings: usb: qcom,dwc3: Update ipq5332 interrupt info IPQ5332 has only three interrupts. Update the constraints to fix the following dt_binding_check errors. interrupt-names: ['pwr_event', 'dp_hs_phy_irq', 'dm_hs_phy_irq'] is too short Fixes: 53c6d854be4e ("dt-bindings: usb: dwc3: Clean up hs_phy_irq in binding") Signed-off-by: Varadarajan Narayanan Acked-by: Rob Herring (Arm) Link: https://lore.kernel.org/r/20240723100151.402300-2-quic_varada@quicinc.com Signed-off-by: Greg Kroah-Hartman --- .../devicetree/bindings/usb/qcom,dwc3.yaml | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml index efde47a5b145..9dfbb01294fd 100644 --- a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml @@ -428,6 +428,21 @@ allOf: contains: enum: - qcom,ipq5332-dwc3 + then: + properties: + interrupts: + maxItems: 3 + interrupt-names: + items: + - const: pwr_event + - const: dp_hs_phy_irq + - const: dm_hs_phy_irq + + - if: + properties: + compatible: + contains: + enum: - qcom,x1e80100-dwc3 then: properties: From f7fd939e805672417bbf418f6035dec9400230fd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Th=C3=A9o=20Lebrun?= Date: Fri, 26 Jul 2024 20:17:49 +0200 Subject: [PATCH 008/145] dt-bindings: usb: ti,j721e-usb: fix compatible list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Compatible can be A or B+A, not A or B or A+B. B got added afterwards, we want B+A not A+B. A=ti,j721e-usb and B=ti,am64-usb. Reviewed-by: Rob Herring Reviewed-by: Conor Dooley Signed-off-by: Théo Lebrun Link: https://lore.kernel.org/r/20240726-s2r-cdns-v5-1-8664bfb032ac@bootlin.com Signed-off-by: Greg Kroah-Hartman --- Documentation/devicetree/bindings/usb/ti,j721e-usb.yaml | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/usb/ti,j721e-usb.yaml b/Documentation/devicetree/bindings/usb/ti,j721e-usb.yaml index 95ff9791baea..653a89586f4e 100644 --- a/Documentation/devicetree/bindings/usb/ti,j721e-usb.yaml +++ b/Documentation/devicetree/bindings/usb/ti,j721e-usb.yaml @@ -13,10 +13,9 @@ properties: compatible: oneOf: - const: ti,j721e-usb - - const: ti,am64-usb - items: - - const: ti,j721e-usb - const: ti,am64-usb + - const: ti,j721e-usb reg: maxItems: 1 From 3c2360f1a50e6ef74c61748696134b5b31a9e191 Mon Sep 17 00:00:00 2001 From: Varadarajan Narayanan Date: Tue, 30 Jul 2024 11:18:14 +0530 Subject: [PATCH 009/145] dt-bindings: usb: qcom,dwc3: Update ipq5332 clock details Unlike MSM SoC, IPQ SoC doesn't use RPM to aggregate bandwidth requests and scale the NoC frequency. The NoCs are turned on and set to a specific frequency at boot time and that is used for the lifetime of the system. Hence interconnect was not considered previously. The same approach was used for PCIe and at that point the consensus was to move to interconnect. Hence implemented the ICC driver and updating the existing USB driver to use the ICC driver. USB uses icc-clk framework to enable the NoC interface clock. Hence the 'iface' clock is removed from the list of clocks. Update the clock-names list accordingly. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Varadarajan Narayanan Link: https://lore.kernel.org/r/20240730054817.1915652-3-quic_varada@quicinc.com Signed-off-by: Greg Kroah-Hartman --- Documentation/devicetree/bindings/usb/qcom,dwc3.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml index 9dfbb01294fd..e99c55bb4e9c 100644 --- a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml @@ -164,6 +164,7 @@ allOf: contains: enum: - qcom,ipq4019-dwc3 + - qcom,ipq5332-dwc3 then: properties: clocks: @@ -267,7 +268,6 @@ allOf: contains: enum: - qcom,ipq5018-dwc3 - - qcom,ipq5332-dwc3 - qcom,msm8994-dwc3 - qcom,qcs404-dwc3 then: From 727f5a24b8b0164ac807dd77b469ed6e50df825d Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Sun, 28 Jul 2024 15:00:24 +0200 Subject: [PATCH 010/145] usb: dwc2: debugfs: Print parameter no_clock_gating The commit c4a0f7a6ab54 ("usb: dwc2: Skip clock gating on Samsung SoCs") introduced a parameter to skip enabling clock gating mode even the hardware platform should supports it. In order to make this more visible also print this in show parameters of debugfs. Signed-off-by: Stefan Wahren Acked-by: Minas Harutyunyan Reviewed-by: Florian Fainelli Link: https://lore.kernel.org/r/20240728130029.78279-3-wahrenst@gmx.net Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc2/debugfs.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/dwc2/debugfs.c b/drivers/usb/dwc2/debugfs.c index 7c82ab590401..3116ac72747f 100644 --- a/drivers/usb/dwc2/debugfs.c +++ b/drivers/usb/dwc2/debugfs.c @@ -702,6 +702,7 @@ static int params_show(struct seq_file *seq, void *v) print_param(seq, p, uframe_sched); print_param(seq, p, external_id_pin_ctl); print_param(seq, p, power_down); + print_param(seq, p, no_clock_gating); print_param(seq, p, lpm); print_param(seq, p, lpm_clock_gating); print_param(seq, p, besl); From e7d0aee60f49b7c915696d70a5b7d26d8af1e612 Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Sun, 28 Jul 2024 15:00:25 +0200 Subject: [PATCH 011/145] usb: dwc2: Add comment about BCM2848 ACPI ID During recent code review the different naming between ACPI and OF IDs led to confusion. So add a clarifying comment. Link: https://lore.kernel.org/linux-usb/38e46b44-6248-45e8-bdf9-66008a2fe290@arm.com/ Signed-off-by: Stefan Wahren Link: https://lore.kernel.org/r/20240728130029.78279-4-wahrenst@gmx.net Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc2/params.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index a937eadbc9b3..4d73fae80b12 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -352,6 +352,7 @@ const struct of_device_id dwc2_of_match_table[] = { MODULE_DEVICE_TABLE(of, dwc2_of_match_table); const struct acpi_device_id dwc2_acpi_match[] = { + /* This ID refers to the same USB IP as of_device_id brcm,bcm2835-usb */ { "BCM2848", (kernel_ulong_t)dwc2_set_bcm_params }, { }, }; From d483f034f03261c8c8450d106aa243837122b5f0 Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Sun, 28 Jul 2024 15:00:26 +0200 Subject: [PATCH 012/145] usb: dwc2: Skip clock gating on Broadcom SoCs On resume of the Raspberry Pi the dwc2 driver fails to enable HCD_FLAG_HW_ACCESSIBLE before re-enabling the interrupts. This causes a situation where both handler ignore a incoming port interrupt and force the upper layers to disable the dwc2 interrupt line. This leaves the USB interface in a unusable state: irq 66: nobody cared (try booting with the "irqpoll" option) CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 6.10.0-rc3 Hardware name: BCM2835 Call trace: unwind_backtrace from show_stack+0x10/0x14 show_stack from dump_stack_lvl+0x50/0x64 dump_stack_lvl from __report_bad_irq+0x38/0xc0 __report_bad_irq from note_interrupt+0x2ac/0x2f4 note_interrupt from handle_irq_event+0x88/0x8c handle_irq_event from handle_level_irq+0xb4/0x1ac handle_level_irq from generic_handle_domain_irq+0x24/0x34 generic_handle_domain_irq from bcm2836_chained_handle_irq+0x24/0x28 bcm2836_chained_handle_irq from generic_handle_domain_irq+0x24/0x34 generic_handle_domain_irq from generic_handle_arch_irq+0x34/0x44 generic_handle_arch_irq from __irq_svc+0x88/0xb0 Exception stack(0xc1b01f20 to 0xc1b01f68) 1f20: 0005c0d4 00000001 00000000 00000000 c1b09780 c1d6b32c c1b04e54 c1a5eae8 1f40: c1b04e90 00000000 00000000 00000000 c1d6a8a0 c1b01f70 c11d2da8 c11d4160 1f60: 60000013 ffffffff __irq_svc from default_idle_call+0x1c/0xb0 default_idle_call from do_idle+0x21c/0x284 do_idle from cpu_startup_entry+0x28/0x2c cpu_startup_entry from kernel_init+0x0/0x12c handlers: [] dwc2_handle_common_intr [<75cd278b>] usb_hcd_irq Disabling IRQ #66 Disabling clock gating workaround this issue. Fixes: 0112b7ce68ea ("usb: dwc2: Update dwc2_handle_usb_suspend_intr function.") Link: https://lore.kernel.org/linux-usb/3fd0c2fb-4752-45b3-94eb-42352703e1fd@gmx.net/T/ Link: https://lore.kernel.org/all/5e8cbce0-3260-2971-484f-fc73a3b2bd28@synopsys.com/ Signed-off-by: Stefan Wahren Acked-by: Minas Harutyunyan Link: https://lore.kernel.org/r/20240728130029.78279-5-wahrenst@gmx.net Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc2/params.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 4d73fae80b12..68226defdc60 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -23,6 +23,7 @@ static void dwc2_set_bcm_params(struct dwc2_hsotg *hsotg) p->max_transfer_size = 65535; p->max_packet_count = 511; p->ahbcfg = 0x10; + p->no_clock_gating = true; } static void dwc2_set_his_params(struct dwc2_hsotg *hsotg) From 07a83512fa5be3f3d46369eee6352102fd9fb505 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:08 +0100 Subject: [PATCH 013/145] usb: typec: tcpci: fix a comment typo MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit autonously -> autonomously Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-1-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/tcpci.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/usb/tcpci.h b/include/linux/usb/tcpci.h index 0ab39b6ea205..d27fe0c22a8b 100644 --- a/include/linux/usb/tcpci.h +++ b/include/linux/usb/tcpci.h @@ -190,7 +190,7 @@ struct tcpci; * Optional; Callback to perform chip specific operations when FRS * is sourcing vbus. * @auto_discharge_disconnect: - * Optional; Enables TCPC to autonously discharge vbus on disconnect. + * Optional; Enables TCPC to autonomously discharge vbus on disconnect. * @vbus_vsafe0v: * optional; Set when TCPC can detect whether vbus is at VSAFE0V. * @set_partner_usb_comm_capable: From 0943ce2b764310efeffc58fbc09a9105cf02a8ea Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:09 +0100 Subject: [PATCH 014/145] usb: typec: tcpm/tcpci_maxim: clarify a comment MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We loop while the status is != 0, so rephrase the comment slightly for clarity. Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-2-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpci_maxim_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/typec/tcpm/tcpci_maxim_core.c b/drivers/usb/typec/tcpm/tcpci_maxim_core.c index 760e2f92b958..441344fd0201 100644 --- a/drivers/usb/typec/tcpm/tcpci_maxim_core.c +++ b/drivers/usb/typec/tcpm/tcpci_maxim_core.c @@ -397,7 +397,7 @@ static irqreturn_t max_tcpci_irq(int irq, void *dev_id) } while (status) { irq_return = _max_tcpci_irq(chip, status); - /* Do not return if the ALERT is already set. */ + /* Do not return if a (new) ALERT is set (again). */ ret = max_tcpci_read16(chip, TCPC_ALERT, &status); if (ret < 0) break; From f523aa6d72598bcd2946c7e02d29f33f94806a15 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:10 +0100 Subject: [PATCH 015/145] usb: typec: tcpci: use GENMASK() for TCPC_CC_STATUS_CC[12] MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The existing code here, particularly in maxim_contaminant.c, is arguably quite hard to read due to the open-coded masking and shifting spanning multiple lines. Use GENMASK() and FIELD_GET() instead, which arguably make the code much easier to follow. While at it, use the symbolic name TCPC_CC_STATE_SRC_OPEN for one instance of open-coded 0x0. Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-3-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/maxim_contaminant.c | 8 +++----- drivers/usb/typec/tcpm/tcpci.c | 7 +++---- drivers/usb/typec/tcpm/tcpci_rt1711h.c | 7 +++---- include/linux/usb/tcpci.h | 8 +++----- 4 files changed, 12 insertions(+), 18 deletions(-) diff --git a/drivers/usb/typec/tcpm/maxim_contaminant.c b/drivers/usb/typec/tcpm/maxim_contaminant.c index f8504a90da26..e7687aeb69c0 100644 --- a/drivers/usb/typec/tcpm/maxim_contaminant.c +++ b/drivers/usb/typec/tcpm/maxim_contaminant.c @@ -5,6 +5,7 @@ * USB-C module to reduce wakeups due to contaminants. */ +#include #include #include #include @@ -48,11 +49,8 @@ enum fladc_select { #define STATUS_CHECK(reg, mask, val) (((reg) & (mask)) == (val)) #define IS_CC_OPEN(cc_status) \ - (STATUS_CHECK((cc_status), TCPC_CC_STATUS_CC1_MASK << TCPC_CC_STATUS_CC1_SHIFT, \ - TCPC_CC_STATE_SRC_OPEN) && STATUS_CHECK((cc_status), \ - TCPC_CC_STATUS_CC2_MASK << \ - TCPC_CC_STATUS_CC2_SHIFT, \ - TCPC_CC_STATE_SRC_OPEN)) + (FIELD_GET(TCPC_CC_STATUS_CC1, cc_status) == TCPC_CC_STATE_SRC_OPEN \ + && FIELD_GET(TCPC_CC_STATUS_CC2, cc_status) == TCPC_CC_STATE_SRC_OPEN) static int max_contaminant_adc_to_mv(struct max_tcpci_chip *chip, enum fladc_select channel, bool ua_src, u8 fladc) diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c index b862fdf3fe1d..477f41632ed4 100644 --- a/drivers/usb/typec/tcpm/tcpci.c +++ b/drivers/usb/typec/tcpm/tcpci.c @@ -5,6 +5,7 @@ * USB Type-C Port Controller Interface. */ +#include #include #include #include @@ -241,12 +242,10 @@ static int tcpci_get_cc(struct tcpc_dev *tcpc, if (ret < 0) return ret; - *cc1 = tcpci_to_typec_cc((reg >> TCPC_CC_STATUS_CC1_SHIFT) & - TCPC_CC_STATUS_CC1_MASK, + *cc1 = tcpci_to_typec_cc(FIELD_GET(TCPC_CC_STATUS_CC1, reg), reg & TCPC_CC_STATUS_TERM || tcpc_presenting_rd(role_control, CC1)); - *cc2 = tcpci_to_typec_cc((reg >> TCPC_CC_STATUS_CC2_SHIFT) & - TCPC_CC_STATUS_CC2_MASK, + *cc2 = tcpci_to_typec_cc(FIELD_GET(TCPC_CC_STATUS_CC2, reg), reg & TCPC_CC_STATUS_TERM || tcpc_presenting_rd(role_control, CC2)); diff --git a/drivers/usb/typec/tcpm/tcpci_rt1711h.c b/drivers/usb/typec/tcpm/tcpci_rt1711h.c index 67422d45eb54..c6dbccf6b17a 100644 --- a/drivers/usb/typec/tcpm/tcpci_rt1711h.c +++ b/drivers/usb/typec/tcpm/tcpci_rt1711h.c @@ -5,6 +5,7 @@ * Richtek RT1711H Type-C Chip Driver */ +#include #include #include #include @@ -195,12 +196,10 @@ static inline int rt1711h_init_cc_params(struct rt1711h_chip *chip, u8 status) if (ret < 0) return ret; - cc1 = tcpci_to_typec_cc((status >> TCPC_CC_STATUS_CC1_SHIFT) & - TCPC_CC_STATUS_CC1_MASK, + cc1 = tcpci_to_typec_cc(FIELD_GET(TCPC_CC_STATUS_CC1, status), status & TCPC_CC_STATUS_TERM || tcpc_presenting_rd(role, CC1)); - cc2 = tcpci_to_typec_cc((status >> TCPC_CC_STATUS_CC2_SHIFT) & - TCPC_CC_STATUS_CC2_MASK, + cc2 = tcpci_to_typec_cc(FIELD_GET(TCPC_CC_STATUS_CC2, status), status & TCPC_CC_STATUS_TERM || tcpc_presenting_rd(role, CC2)); diff --git a/include/linux/usb/tcpci.h b/include/linux/usb/tcpci.h index d27fe0c22a8b..31d21ccf662b 100644 --- a/include/linux/usb/tcpci.h +++ b/include/linux/usb/tcpci.h @@ -92,11 +92,9 @@ #define TCPC_CC_STATUS_TERM BIT(4) #define TCPC_CC_STATUS_TERM_RP 0 #define TCPC_CC_STATUS_TERM_RD 1 +#define TCPC_CC_STATUS_CC2 GENMASK(3, 2) +#define TCPC_CC_STATUS_CC1 GENMASK(1, 0) #define TCPC_CC_STATE_SRC_OPEN 0 -#define TCPC_CC_STATUS_CC2_SHIFT 2 -#define TCPC_CC_STATUS_CC2_MASK 0x3 -#define TCPC_CC_STATUS_CC1_SHIFT 0 -#define TCPC_CC_STATUS_CC1_MASK 0x3 #define TCPC_POWER_STATUS 0x1e #define TCPC_POWER_STATUS_DBG_ACC_CON BIT(7) @@ -256,7 +254,7 @@ static inline enum typec_cc_status tcpci_to_typec_cc(unsigned int cc, bool sink) if (sink) return TYPEC_CC_RP_3_0; fallthrough; - case 0x0: + case TCPC_CC_STATE_SRC_OPEN: default: return TYPEC_CC_OPEN; } From 83b254c13ac093810e1058d9cb1bbb4b7ef9c246 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:11 +0100 Subject: [PATCH 016/145] usb: typec: tcpci: use GENMASK() for TCPC_ROLE_CTRL_CC[12] MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit All this open-coded shifting and masking is quite hard to read, in particular the if-statement in tcpci_apply_rc(). Declare TCPC_ROLE_CTRL_CC[12] using GENMASK() which allows using FIELD_GET() and FIELD_PREP() to arguably make the code more legible. Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-4-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/anx7411.c | 5 +- drivers/usb/typec/tcpm/tcpci.c | 73 ++++++++++++-------------- drivers/usb/typec/tcpm/tcpci_rt1711h.c | 8 +-- include/linux/usb/tcpci.h | 9 ++-- 4 files changed, 43 insertions(+), 52 deletions(-) diff --git a/drivers/usb/typec/anx7411.c b/drivers/usb/typec/anx7411.c index 5a5bf3532ad7..1a35c6d6f36b 100644 --- a/drivers/usb/typec/anx7411.c +++ b/drivers/usb/typec/anx7411.c @@ -6,6 +6,7 @@ * Copyright(c) 2022, Analogix Semiconductor. All rights reserved. * */ +#include #include #include #include @@ -884,8 +885,8 @@ static void anx7411_chip_standby(struct anx7411_data *ctx) OCM_RESET); ret |= anx7411_reg_write(ctx->tcpc_client, ANALOG_CTRL_10, 0x80); /* Set TCPC to RD and DRP enable */ - cc1 = TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT; - cc2 = TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT; + cc1 = FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RD); + cc2 = FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RD); ret |= anx7411_reg_write(ctx->tcpc_client, TCPC_ROLE_CTRL, TCPC_ROLE_CTRL_DRP | cc1 | cc2); diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c index 477f41632ed4..c9a7e3fcc1b7 100644 --- a/drivers/usb/typec/tcpm/tcpci.c +++ b/drivers/usb/typec/tcpm/tcpci.c @@ -104,45 +104,42 @@ static int tcpci_set_cc(struct tcpc_dev *tcpc, enum typec_cc_status cc) switch (cc) { case TYPEC_CC_RA: - reg = (TCPC_ROLE_CTRL_CC_RA << TCPC_ROLE_CTRL_CC1_SHIFT) | - (TCPC_ROLE_CTRL_CC_RA << TCPC_ROLE_CTRL_CC2_SHIFT); + reg = (FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RA) + | FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RA)); break; case TYPEC_CC_RD: - reg = (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) | - (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT); + reg = (FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RD) + | FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RD)); break; case TYPEC_CC_RP_DEF: - reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) | - (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) | - (TCPC_ROLE_CTRL_RP_VAL_DEF << - TCPC_ROLE_CTRL_RP_VAL_SHIFT); + reg = (FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RP) + | FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RP) + | (TCPC_ROLE_CTRL_RP_VAL_DEF << TCPC_ROLE_CTRL_RP_VAL_SHIFT)); break; case TYPEC_CC_RP_1_5: - reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) | - (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) | - (TCPC_ROLE_CTRL_RP_VAL_1_5 << - TCPC_ROLE_CTRL_RP_VAL_SHIFT); + reg = (FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RP) + | FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RP) + | (TCPC_ROLE_CTRL_RP_VAL_1_5 << TCPC_ROLE_CTRL_RP_VAL_SHIFT)); break; case TYPEC_CC_RP_3_0: - reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) | - (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) | - (TCPC_ROLE_CTRL_RP_VAL_3_0 << - TCPC_ROLE_CTRL_RP_VAL_SHIFT); + reg = (FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RP) + | FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RP) + | (TCPC_ROLE_CTRL_RP_VAL_3_0 << TCPC_ROLE_CTRL_RP_VAL_SHIFT)); break; case TYPEC_CC_OPEN: default: - reg = (TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC1_SHIFT) | - (TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC2_SHIFT); + reg = (FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_OPEN) + | FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_OPEN)); break; } if (vconn_pres) { if (polarity == TYPEC_POLARITY_CC2) { - reg &= ~(TCPC_ROLE_CTRL_CC1_MASK << TCPC_ROLE_CTRL_CC1_SHIFT); - reg |= (TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC1_SHIFT); + reg &= ~TCPC_ROLE_CTRL_CC1; + reg |= FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_OPEN); } else { - reg &= ~(TCPC_ROLE_CTRL_CC2_MASK << TCPC_ROLE_CTRL_CC2_SHIFT); - reg |= (TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC2_SHIFT); + reg &= ~TCPC_ROLE_CTRL_CC2; + reg |= FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_OPEN); } } @@ -168,15 +165,11 @@ static int tcpci_apply_rc(struct tcpc_dev *tcpc, enum typec_cc_status cc, * APPLY_RC state is when ROLE_CONTROL.CC1 != ROLE_CONTROL.CC2 and vbus autodischarge on * disconnect is disabled. Bail out when ROLE_CONTROL.CC1 != ROLE_CONTROL.CC2. */ - if (((reg & (TCPC_ROLE_CTRL_CC2_MASK << TCPC_ROLE_CTRL_CC2_SHIFT)) >> - TCPC_ROLE_CTRL_CC2_SHIFT) != - ((reg & (TCPC_ROLE_CTRL_CC1_MASK << TCPC_ROLE_CTRL_CC1_SHIFT)) >> - TCPC_ROLE_CTRL_CC1_SHIFT)) + if (FIELD_GET(TCPC_ROLE_CTRL_CC2, reg) != FIELD_GET(TCPC_ROLE_CTRL_CC1, reg)) return 0; return regmap_update_bits(tcpci->regmap, TCPC_ROLE_CTRL, polarity == TYPEC_POLARITY_CC1 ? - TCPC_ROLE_CTRL_CC2_MASK << TCPC_ROLE_CTRL_CC2_SHIFT : - TCPC_ROLE_CTRL_CC1_MASK << TCPC_ROLE_CTRL_CC1_SHIFT, + TCPC_ROLE_CTRL_CC2 : TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_OPEN); } @@ -215,11 +208,11 @@ static int tcpci_start_toggling(struct tcpc_dev *tcpc, } if (cc == TYPEC_CC_RD) - reg |= (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) | - (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT); + reg |= (FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RD) + | FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RD)); else - reg |= (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) | - (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT); + reg |= (FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RP) + | FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RP)); ret = regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg); if (ret < 0) return ret; @@ -281,28 +274,28 @@ static int tcpci_set_polarity(struct tcpc_dev *tcpc, reg = reg & ~TCPC_ROLE_CTRL_DRP; if (polarity == TYPEC_POLARITY_CC2) { - reg &= ~(TCPC_ROLE_CTRL_CC2_MASK << TCPC_ROLE_CTRL_CC2_SHIFT); + reg &= ~TCPC_ROLE_CTRL_CC2; /* Local port is source */ if (cc2 == TYPEC_CC_RD) /* Role control would have the Rp setting when DRP was enabled */ - reg |= TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT; + reg |= FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RP); else - reg |= TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT; + reg |= FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RD); } else { - reg &= ~(TCPC_ROLE_CTRL_CC1_MASK << TCPC_ROLE_CTRL_CC1_SHIFT); + reg &= ~TCPC_ROLE_CTRL_CC1; /* Local port is source */ if (cc1 == TYPEC_CC_RD) /* Role control would have the Rp setting when DRP was enabled */ - reg |= TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT; + reg |= FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RP); else - reg |= TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT; + reg |= FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RD); } } if (polarity == TYPEC_POLARITY_CC2) - reg |= TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC1_SHIFT; + reg |= FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_OPEN); else - reg |= TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC2_SHIFT; + reg |= FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_OPEN); ret = regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg); if (ret < 0) return ret; diff --git a/drivers/usb/typec/tcpm/tcpci_rt1711h.c b/drivers/usb/typec/tcpm/tcpci_rt1711h.c index c6dbccf6b17a..bdb78d08b5b5 100644 --- a/drivers/usb/typec/tcpm/tcpci_rt1711h.c +++ b/drivers/usb/typec/tcpm/tcpci_rt1711h.c @@ -246,11 +246,11 @@ static int rt1711h_start_drp_toggling(struct tcpci *tcpci, } if (cc == TYPEC_CC_RD) - reg |= (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) | - (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT); + reg |= (FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RD) + | FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RD)); else - reg |= (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) | - (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT); + reg |= (FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RP) + | FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RP)); ret = rt1711h_write8(chip, TCPC_ROLE_CTRL, reg); if (ret < 0) diff --git a/include/linux/usb/tcpci.h b/include/linux/usb/tcpci.h index 31d21ccf662b..552d074429f0 100644 --- a/include/linux/usb/tcpci.h +++ b/include/linux/usb/tcpci.h @@ -68,10 +68,8 @@ #define TCPC_ROLE_CTRL_RP_VAL_DEF 0x0 #define TCPC_ROLE_CTRL_RP_VAL_1_5 0x1 #define TCPC_ROLE_CTRL_RP_VAL_3_0 0x2 -#define TCPC_ROLE_CTRL_CC2_SHIFT 2 -#define TCPC_ROLE_CTRL_CC2_MASK 0x3 -#define TCPC_ROLE_CTRL_CC1_SHIFT 0 -#define TCPC_ROLE_CTRL_CC1_MASK 0x3 +#define TCPC_ROLE_CTRL_CC2 GENMASK(3, 2) +#define TCPC_ROLE_CTRL_CC1 GENMASK(1, 0) #define TCPC_ROLE_CTRL_CC_RA 0x0 #define TCPC_ROLE_CTRL_CC_RP 0x1 #define TCPC_ROLE_CTRL_CC_RD 0x2 @@ -176,8 +174,7 @@ #define tcpc_presenting_rd(reg, cc) \ (!(TCPC_ROLE_CTRL_DRP & (reg)) && \ - (((reg) & (TCPC_ROLE_CTRL_## cc ##_MASK << TCPC_ROLE_CTRL_## cc ##_SHIFT)) == \ - (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_## cc ##_SHIFT))) + FIELD_GET(TCPC_ROLE_CTRL_## cc, reg) == TCPC_ROLE_CTRL_CC_RD) struct tcpci; From 46b1e0f87ba89f0a06ffbde5fe8d13c5af93f94e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:12 +0100 Subject: [PATCH 017/145] usb: typec: tcpci: use GENMASK() for TCPC_ROLE_CTRL_RP_VAL MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Align the last remaining field TCPC_ROLE_CTRL_RP_VAL with the other fields in the TCPC_ROLE_CTRL register by using GENMASK() and FIELD_PREP(). Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-5-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpci.c | 21 ++++++++++++--------- drivers/usb/typec/tcpm/tcpci_rt1711h.c | 12 ++++++------ include/linux/usb/tcpci.h | 3 +-- 3 files changed, 19 insertions(+), 17 deletions(-) diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c index c9a7e3fcc1b7..9477ee813fa5 100644 --- a/drivers/usb/typec/tcpm/tcpci.c +++ b/drivers/usb/typec/tcpm/tcpci.c @@ -114,17 +114,20 @@ static int tcpci_set_cc(struct tcpc_dev *tcpc, enum typec_cc_status cc) case TYPEC_CC_RP_DEF: reg = (FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RP) | FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RP) - | (TCPC_ROLE_CTRL_RP_VAL_DEF << TCPC_ROLE_CTRL_RP_VAL_SHIFT)); + | FIELD_PREP(TCPC_ROLE_CTRL_RP_VAL, + TCPC_ROLE_CTRL_RP_VAL_DEF)); break; case TYPEC_CC_RP_1_5: reg = (FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RP) | FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RP) - | (TCPC_ROLE_CTRL_RP_VAL_1_5 << TCPC_ROLE_CTRL_RP_VAL_SHIFT)); + | FIELD_PREP(TCPC_ROLE_CTRL_RP_VAL, + TCPC_ROLE_CTRL_RP_VAL_1_5)); break; case TYPEC_CC_RP_3_0: reg = (FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RP) | FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RP) - | (TCPC_ROLE_CTRL_RP_VAL_3_0 << TCPC_ROLE_CTRL_RP_VAL_SHIFT)); + | FIELD_PREP(TCPC_ROLE_CTRL_RP_VAL, + TCPC_ROLE_CTRL_RP_VAL_3_0)); break; case TYPEC_CC_OPEN: default: @@ -194,16 +197,16 @@ static int tcpci_start_toggling(struct tcpc_dev *tcpc, switch (cc) { default: case TYPEC_CC_RP_DEF: - reg |= (TCPC_ROLE_CTRL_RP_VAL_DEF << - TCPC_ROLE_CTRL_RP_VAL_SHIFT); + reg |= FIELD_PREP(TCPC_ROLE_CTRL_RP_VAL, + TCPC_ROLE_CTRL_RP_VAL_DEF); break; case TYPEC_CC_RP_1_5: - reg |= (TCPC_ROLE_CTRL_RP_VAL_1_5 << - TCPC_ROLE_CTRL_RP_VAL_SHIFT); + reg |= FIELD_PREP(TCPC_ROLE_CTRL_RP_VAL, + TCPC_ROLE_CTRL_RP_VAL_1_5); break; case TYPEC_CC_RP_3_0: - reg |= (TCPC_ROLE_CTRL_RP_VAL_3_0 << - TCPC_ROLE_CTRL_RP_VAL_SHIFT); + reg |= FIELD_PREP(TCPC_ROLE_CTRL_RP_VAL, + TCPC_ROLE_CTRL_RP_VAL_3_0); break; } diff --git a/drivers/usb/typec/tcpm/tcpci_rt1711h.c b/drivers/usb/typec/tcpm/tcpci_rt1711h.c index bdb78d08b5b5..64f6dd0dc660 100644 --- a/drivers/usb/typec/tcpm/tcpci_rt1711h.c +++ b/drivers/usb/typec/tcpm/tcpci_rt1711h.c @@ -232,16 +232,16 @@ static int rt1711h_start_drp_toggling(struct tcpci *tcpci, switch (cc) { default: case TYPEC_CC_RP_DEF: - reg |= (TCPC_ROLE_CTRL_RP_VAL_DEF << - TCPC_ROLE_CTRL_RP_VAL_SHIFT); + reg |= FIELD_PREP(TCPC_ROLE_CTRL_RP_VAL, + TCPC_ROLE_CTRL_RP_VAL_DEF); break; case TYPEC_CC_RP_1_5: - reg |= (TCPC_ROLE_CTRL_RP_VAL_1_5 << - TCPC_ROLE_CTRL_RP_VAL_SHIFT); + reg |= FIELD_PREP(TCPC_ROLE_CTRL_RP_VAL, + TCPC_ROLE_CTRL_RP_VAL_1_5); break; case TYPEC_CC_RP_3_0: - reg |= (TCPC_ROLE_CTRL_RP_VAL_3_0 << - TCPC_ROLE_CTRL_RP_VAL_SHIFT); + reg |= FIELD_PREP(TCPC_ROLE_CTRL_RP_VAL, + TCPC_ROLE_CTRL_RP_VAL_3_0); break; } diff --git a/include/linux/usb/tcpci.h b/include/linux/usb/tcpci.h index 552d074429f0..80652d4f722e 100644 --- a/include/linux/usb/tcpci.h +++ b/include/linux/usb/tcpci.h @@ -63,8 +63,7 @@ #define TCPC_ROLE_CTRL 0x1a #define TCPC_ROLE_CTRL_DRP BIT(6) -#define TCPC_ROLE_CTRL_RP_VAL_SHIFT 4 -#define TCPC_ROLE_CTRL_RP_VAL_MASK 0x3 +#define TCPC_ROLE_CTRL_RP_VAL GENMASK(5, 4) #define TCPC_ROLE_CTRL_RP_VAL_DEF 0x0 #define TCPC_ROLE_CTRL_RP_VAL_1_5 0x1 #define TCPC_ROLE_CTRL_RP_VAL_3_0 0x2 From aee4568f42e0d7526207a10944bb89bb45522b59 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:13 +0100 Subject: [PATCH 018/145] usb: typec: tcpci: use GENMASK() for TCPC_MSG_HDR_INFO_REV MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Convert field TCPC_MSG_HDR_INFO_REV from register TCPC_MSG_HDR_INFO to using GENMASK() and FIELD_PREP() so as to keep using a similar approach for all fields. Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-6-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpci.c | 2 +- include/linux/usb/tcpci.h | 3 +-- 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c index 9477ee813fa5..929d0b7c64ca 100644 --- a/drivers/usb/typec/tcpm/tcpci.c +++ b/drivers/usb/typec/tcpm/tcpci.c @@ -456,7 +456,7 @@ static int tcpci_set_roles(struct tcpc_dev *tcpc, bool attached, unsigned int reg; int ret; - reg = PD_REV20 << TCPC_MSG_HDR_INFO_REV_SHIFT; + reg = FIELD_PREP(TCPC_MSG_HDR_INFO_REV, PD_REV20); if (role == TYPEC_SOURCE) reg |= TCPC_MSG_HDR_INFO_PWR_ROLE; if (data == TYPEC_HOST) diff --git a/include/linux/usb/tcpci.h b/include/linux/usb/tcpci.h index 80652d4f722e..3cd61e9f73b3 100644 --- a/include/linux/usb/tcpci.h +++ b/include/linux/usb/tcpci.h @@ -129,9 +129,8 @@ #define TCPC_MSG_HDR_INFO 0x2e #define TCPC_MSG_HDR_INFO_DATA_ROLE BIT(3) +#define TCPC_MSG_HDR_INFO_REV GENMASK(2, 1) #define TCPC_MSG_HDR_INFO_PWR_ROLE BIT(0) -#define TCPC_MSG_HDR_INFO_REV_SHIFT 1 -#define TCPC_MSG_HDR_INFO_REV_MASK 0x3 #define TCPC_RX_DETECT 0x2f #define TCPC_RX_DETECT_HARD_RESET BIT(5) From 7cd41974d2c81055f61ba9f69e31c02e866716e0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:14 +0100 Subject: [PATCH 019/145] usb: typec: tcpci: use GENMASK() for TCPC_TRANSMIT register fields MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Convert all fields from register TCPC_TRANSMIT to using GENMASK() and FIELD_PREP() so as to keep using a similar approach throughout the code base and make it arguably easier to read. Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-7-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpci.c | 7 +++++-- include/linux/usb/tcpci.h | 6 ++---- 2 files changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c index 929d0b7c64ca..aed223edf76a 100644 --- a/drivers/usb/typec/tcpm/tcpci.c +++ b/drivers/usb/typec/tcpm/tcpci.c @@ -607,8 +607,11 @@ static int tcpci_pd_transmit(struct tcpc_dev *tcpc, enum tcpm_transmit_type type } /* nRetryCount is 3 in PD2.0 spec where 2 in PD3.0 spec */ - reg = ((negotiated_rev > PD_REV20 ? PD_RETRY_COUNT_3_0_OR_HIGHER : PD_RETRY_COUNT_DEFAULT) - << TCPC_TRANSMIT_RETRY_SHIFT) | (type << TCPC_TRANSMIT_TYPE_SHIFT); + reg = FIELD_PREP(TCPC_TRANSMIT_RETRY, + (negotiated_rev > PD_REV20 + ? PD_RETRY_COUNT_3_0_OR_HIGHER + : PD_RETRY_COUNT_DEFAULT)); + reg |= FIELD_PREP(TCPC_TRANSMIT_TYPE, type); ret = regmap_write(tcpci->regmap, TCPC_TRANSMIT, reg); if (ret < 0) return ret; diff --git a/include/linux/usb/tcpci.h b/include/linux/usb/tcpci.h index 3cd61e9f73b3..f7f5cfbdef12 100644 --- a/include/linux/usb/tcpci.h +++ b/include/linux/usb/tcpci.h @@ -148,10 +148,8 @@ #define TCPC_RX_DATA 0x34 /* through 0x4f */ #define TCPC_TRANSMIT 0x50 -#define TCPC_TRANSMIT_RETRY_SHIFT 4 -#define TCPC_TRANSMIT_RETRY_MASK 0x3 -#define TCPC_TRANSMIT_TYPE_SHIFT 0 -#define TCPC_TRANSMIT_TYPE_MASK 0x7 +#define TCPC_TRANSMIT_RETRY GENMASK(5, 4) +#define TCPC_TRANSMIT_TYPE GENMASK(2, 0) #define TCPC_TX_BYTE_CNT 0x51 #define TCPC_TX_HDR 0x52 From 57e154cc44d23802dcce6a9bcb210735a43cd201 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:15 +0100 Subject: [PATCH 020/145] usb: typec: tcpm/tcpci_maxim: sort TCPC_ALERT_MASK values by bit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This makes it easier to see what's missing and what's being programmed. While at it, add brackets to help with formatting and remove a comment that doesn't add much value. Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-8-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpci_maxim_core.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/usb/typec/tcpm/tcpci_maxim_core.c b/drivers/usb/typec/tcpm/tcpci_maxim_core.c index 441344fd0201..48f90c67c673 100644 --- a/drivers/usb/typec/tcpm/tcpci_maxim_core.c +++ b/drivers/usb/typec/tcpm/tcpci_maxim_core.c @@ -97,11 +97,13 @@ static void max_tcpci_init_regs(struct max_tcpci_chip *chip) if (ret < 0) return; - alert_mask = TCPC_ALERT_TX_SUCCESS | TCPC_ALERT_TX_DISCARDED | TCPC_ALERT_TX_FAILED | - TCPC_ALERT_RX_HARD_RST | TCPC_ALERT_RX_STATUS | TCPC_ALERT_CC_STATUS | - TCPC_ALERT_VBUS_DISCNCT | TCPC_ALERT_RX_BUF_OVF | TCPC_ALERT_POWER_STATUS | - /* Enable Extended alert for detecting Fast Role Swap Signal */ - TCPC_ALERT_EXTND | TCPC_ALERT_EXTENDED_STATUS | TCPC_ALERT_FAULT; + alert_mask = (TCPC_ALERT_TX_SUCCESS | TCPC_ALERT_TX_DISCARDED | + TCPC_ALERT_TX_FAILED | TCPC_ALERT_RX_HARD_RST | + TCPC_ALERT_RX_STATUS | TCPC_ALERT_POWER_STATUS | + TCPC_ALERT_CC_STATUS | + TCPC_ALERT_EXTND | TCPC_ALERT_EXTENDED_STATUS | + TCPC_ALERT_VBUS_DISCNCT | TCPC_ALERT_RX_BUF_OVF | + TCPC_ALERT_FAULT); ret = max_tcpci_write16(chip, TCPC_ALERT_MASK, alert_mask); if (ret < 0) { From 064e7e5a5d5f489cbce34ec8efe39199bfa7e1f7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:16 +0100 Subject: [PATCH 021/145] usb: typec: tcpm/tcpci_maxim: simplify clearing of TCPC_ALERT_RX_BUF_OVF MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There is no need for using the ternary if/else here, simply mask TCPC_ALERT_RX_BUF_OVF as necessary, which arguably makes the code easier to read. Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-9-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpci_maxim_core.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/usb/typec/tcpm/tcpci_maxim_core.c b/drivers/usb/typec/tcpm/tcpci_maxim_core.c index 48f90c67c673..f811234ca6d8 100644 --- a/drivers/usb/typec/tcpm/tcpci_maxim_core.c +++ b/drivers/usb/typec/tcpm/tcpci_maxim_core.c @@ -193,9 +193,8 @@ static void process_rx(struct max_tcpci_chip *chip, u16 status) * Read complete, clear RX status alert bit. * Clear overflow as well if set. */ - ret = max_tcpci_write16(chip, TCPC_ALERT, status & TCPC_ALERT_RX_BUF_OVF ? - TCPC_ALERT_RX_STATUS | TCPC_ALERT_RX_BUF_OVF : - TCPC_ALERT_RX_STATUS); + ret = max_tcpci_write16(chip, TCPC_ALERT, + TCPC_ALERT_RX_STATUS | (status & TCPC_ALERT_RX_BUF_OVF)); if (ret < 0) return; @@ -297,9 +296,8 @@ static irqreturn_t _max_tcpci_irq(struct max_tcpci_chip *chip, u16 status) * be cleared until we have successfully retrieved message. */ if (status & ~TCPC_ALERT_RX_STATUS) { - mask = status & TCPC_ALERT_RX_BUF_OVF ? - status & ~(TCPC_ALERT_RX_STATUS | TCPC_ALERT_RX_BUF_OVF) : - status & ~TCPC_ALERT_RX_STATUS; + mask = status & ~(TCPC_ALERT_RX_STATUS + | (status & TCPC_ALERT_RX_BUF_OVF)); ret = max_tcpci_write16(chip, TCPC_ALERT, mask); if (ret < 0) { dev_err(chip->dev, "ALERT clear failed\n"); From 4d39e00481a6b15440872ada4c25614edb76199b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:17 +0100 Subject: [PATCH 022/145] usb: typec: tcpm/tcpci_maxim: drop STATUS_CHECK() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Only one user of STATUS_CHECK() remains, and the code can actually be made more legible by simply avoiding the use of that wrapper macro, allowing to also drop the macro altogether. Do so. Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-10-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/maxim_contaminant.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/usb/typec/tcpm/maxim_contaminant.c b/drivers/usb/typec/tcpm/maxim_contaminant.c index e7687aeb69c0..8ac8eeade277 100644 --- a/drivers/usb/typec/tcpm/maxim_contaminant.c +++ b/drivers/usb/typec/tcpm/maxim_contaminant.c @@ -46,8 +46,6 @@ enum fladc_select { #define READ1_SLEEP_MS 10 #define READ2_SLEEP_MS 5 -#define STATUS_CHECK(reg, mask, val) (((reg) & (mask)) == (val)) - #define IS_CC_OPEN(cc_status) \ (FIELD_GET(TCPC_CC_STATUS_CC1, cc_status) == TCPC_CC_STATE_SRC_OPEN \ && FIELD_GET(TCPC_CC_STATUS_CC2, cc_status) == TCPC_CC_STATE_SRC_OPEN) @@ -368,7 +366,7 @@ bool max_contaminant_is_contaminant(struct max_tcpci_chip *chip, bool disconnect } return false; } else if (chip->contaminant_state == DETECTED) { - if (STATUS_CHECK(cc_status, TCPC_CC_STATUS_TOGGLING, 0)) { + if (!(cc_status & TCPC_CC_STATUS_TOGGLING)) { chip->contaminant_state = max_contaminant_detect_contaminant(chip); if (chip->contaminant_state == DETECTED) { max_contaminant_enable_dry_detection(chip); From 9ee70dd4f7dc614adc606beadc32c8d86dc9b2d6 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:18 +0100 Subject: [PATCH 023/145] usb: typec: tcpm/tcpci_maxim: use GENMASK() for TCPC_VENDOR_CC_CTRL2 register MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Convert register TCPC_VENDOR_CC_CTRL2 to using GENMASK() and FIELD_PREP() so as to keep using a similar approach throughout the code base and make it arguably easier to read. Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-11-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/maxim_contaminant.c | 18 +++++++++++------- drivers/usb/typec/tcpm/tcpci_maxim.h | 6 +++--- 2 files changed, 14 insertions(+), 10 deletions(-) diff --git a/drivers/usb/typec/tcpm/maxim_contaminant.c b/drivers/usb/typec/tcpm/maxim_contaminant.c index 8ac8eeade277..f7acaa42329f 100644 --- a/drivers/usb/typec/tcpm/maxim_contaminant.c +++ b/drivers/usb/typec/tcpm/maxim_contaminant.c @@ -116,13 +116,14 @@ static int max_contaminant_read_resistance_kohm(struct max_tcpci_chip *chip, if (channel == CC1_SCALE1 || channel == CC2_SCALE1 || channel == CC1_SCALE2 || channel == CC2_SCALE2) { /* Enable 1uA current source */ - ret = regmap_update_bits(regmap, TCPC_VENDOR_CC_CTRL2, CCLPMODESEL_MASK, - ULTRA_LOW_POWER_MODE); + ret = regmap_update_bits(regmap, TCPC_VENDOR_CC_CTRL2, CCLPMODESEL, + FIELD_PREP(CCLPMODESEL, ULTRA_LOW_POWER_MODE)); if (ret < 0) return ret; /* Enable 1uA current source */ - ret = regmap_update_bits(regmap, TCPC_VENDOR_CC_CTRL2, CCRPCTRL_MASK, UA_1_SRC); + ret = regmap_update_bits(regmap, TCPC_VENDOR_CC_CTRL2, CCRPCTRL, + FIELD_PREP(CCRPCTRL, UA_1_SRC)); if (ret < 0) return ret; @@ -176,7 +177,8 @@ static int max_contaminant_read_comparators(struct max_tcpci_chip *chip, u8 *ven int ret; /* Enable 80uA source */ - ret = regmap_update_bits(regmap, TCPC_VENDOR_CC_CTRL2, CCRPCTRL_MASK, UA_80_SRC); + ret = regmap_update_bits(regmap, TCPC_VENDOR_CC_CTRL2, CCRPCTRL, + FIELD_PREP(CCRPCTRL, UA_80_SRC)); if (ret < 0) return ret; @@ -209,7 +211,8 @@ static int max_contaminant_read_comparators(struct max_tcpci_chip *chip, u8 *ven if (ret < 0) return ret; - ret = regmap_update_bits(regmap, TCPC_VENDOR_CC_CTRL2, CCRPCTRL_MASK, 0); + ret = regmap_update_bits(regmap, TCPC_VENDOR_CC_CTRL2, CCRPCTRL, + FIELD_PREP(CCRPCTRL, 0)); if (ret < 0) return ret; @@ -298,8 +301,9 @@ static int max_contaminant_enable_dry_detection(struct max_tcpci_chip *chip) if (ret < 0) return ret; - ret = regmap_update_bits(regmap, TCPC_VENDOR_CC_CTRL2, CCLPMODESEL_MASK, - ULTRA_LOW_POWER_MODE); + ret = regmap_update_bits(regmap, TCPC_VENDOR_CC_CTRL2, CCLPMODESEL, + FIELD_PREP(CCLPMODESEL, + ULTRA_LOW_POWER_MODE)); if (ret < 0) return ret; ret = max_tcpci_read8(chip, TCPC_VENDOR_CC_CTRL2, &temp); diff --git a/drivers/usb/typec/tcpm/tcpci_maxim.h b/drivers/usb/typec/tcpm/tcpci_maxim.h index 78ff3b73ee7e..92c9a628ebe1 100644 --- a/drivers/usb/typec/tcpm/tcpci_maxim.h +++ b/drivers/usb/typec/tcpm/tcpci_maxim.h @@ -20,9 +20,9 @@ #define SBUOVPDIS BIT(7) #define CCOVPDIS BIT(6) #define SBURPCTRL BIT(5) -#define CCLPMODESEL_MASK GENMASK(4, 3) -#define ULTRA_LOW_POWER_MODE BIT(3) -#define CCRPCTRL_MASK GENMASK(2, 0) +#define CCLPMODESEL GENMASK(4, 3) +#define ULTRA_LOW_POWER_MODE 1 +#define CCRPCTRL GENMASK(2, 0) #define UA_1_SRC 1 #define UA_80_SRC 3 From 5cb7e20bad86ab2df81e1fe26b07f9905569df95 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:19 +0100 Subject: [PATCH 024/145] usb: typec: tcpm/tcpci_maxim: use GENMASK() for TCPC_VENDOR_CC_CTRL3 register MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Convert register TCPC_VENDOR_CC_CTRL3 to using GENMASK() so as to keep using a similar approach throughout the code base and make it arguably easier to read. Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-12-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/maxim_contaminant.c | 9 +++++---- drivers/usb/typec/tcpm/tcpci_maxim.h | 9 +++------ 2 files changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/usb/typec/tcpm/maxim_contaminant.c b/drivers/usb/typec/tcpm/maxim_contaminant.c index f7acaa42329f..cf9887de96c9 100644 --- a/drivers/usb/typec/tcpm/maxim_contaminant.c +++ b/drivers/usb/typec/tcpm/maxim_contaminant.c @@ -283,10 +283,11 @@ static int max_contaminant_enable_dry_detection(struct max_tcpci_chip *chip) u8 temp; int ret; - ret = regmap_update_bits(regmap, TCPC_VENDOR_CC_CTRL3, CCWTRDEB_MASK | CCWTRSEL_MASK - | WTRCYCLE_MASK, CCWTRDEB_1MS << CCWTRDEB_SHIFT | - CCWTRSEL_1V << CCWTRSEL_SHIFT | WTRCYCLE_4_8_S << - WTRCYCLE_SHIFT); + ret = regmap_update_bits(regmap, TCPC_VENDOR_CC_CTRL3, + CCWTRDEB | CCWTRSEL | WTRCYCLE, + FIELD_PREP(CCWTRDEB, CCWTRDEB_1MS) + | FIELD_PREP(CCWTRSEL, CCWTRSEL_1V) + | FIELD_PREP(WTRCYCLE, WTRCYCLE_4_8_S)); if (ret < 0) return ret; diff --git a/drivers/usb/typec/tcpm/tcpci_maxim.h b/drivers/usb/typec/tcpm/tcpci_maxim.h index 92c9a628ebe1..34076069444f 100644 --- a/drivers/usb/typec/tcpm/tcpci_maxim.h +++ b/drivers/usb/typec/tcpm/tcpci_maxim.h @@ -27,15 +27,12 @@ #define UA_80_SRC 3 #define TCPC_VENDOR_CC_CTRL3 0x8e -#define CCWTRDEB_MASK GENMASK(7, 6) -#define CCWTRDEB_SHIFT 6 +#define CCWTRDEB GENMASK(7, 6) #define CCWTRDEB_1MS 1 -#define CCWTRSEL_MASK GENMASK(5, 3) -#define CCWTRSEL_SHIFT 3 +#define CCWTRSEL GENMASK(5, 3) #define CCWTRSEL_1V 0x4 #define CCLADDERDIS BIT(2) -#define WTRCYCLE_MASK BIT(0) -#define WTRCYCLE_SHIFT 0 +#define WTRCYCLE GENMASK(0, 0) #define WTRCYCLE_2_4_S 0 #define WTRCYCLE_4_8_S 1 From fc64f1ce292d0adb9ac3c8b6e372412bb6aa3052 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:20 +0100 Subject: [PATCH 025/145] usb: typec: tcpm/tcpci_maxim: use GENMASK() for TCPC_VENDOR_ADC_CTRL1 register MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Convert register TCPC_VENDOR_ADC_CTRL1 to using GENMASK() and FIELD_PREP() so as to keep using a similar approach throughout the code base and make it arguably easier to read. Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-13-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/maxim_contaminant.c | 7 ++++--- drivers/usb/typec/tcpm/tcpci_maxim.h | 3 +-- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/usb/typec/tcpm/maxim_contaminant.c b/drivers/usb/typec/tcpm/maxim_contaminant.c index cf9887de96c9..7bfec45e8f4f 100644 --- a/drivers/usb/typec/tcpm/maxim_contaminant.c +++ b/drivers/usb/typec/tcpm/maxim_contaminant.c @@ -76,8 +76,8 @@ static int max_contaminant_read_adc_mv(struct max_tcpci_chip *chip, enum fladc_s int ret; /* Channel & scale select */ - ret = regmap_update_bits(regmap, TCPC_VENDOR_ADC_CTRL1, ADCINSEL_MASK, - channel << ADC_CHANNEL_OFFSET); + ret = regmap_update_bits(regmap, TCPC_VENDOR_ADC_CTRL1, ADCINSEL, + FIELD_PREP(ADCINSEL, channel)); if (ret < 0) return ret; @@ -96,7 +96,8 @@ static int max_contaminant_read_adc_mv(struct max_tcpci_chip *chip, enum fladc_s if (ret < 0) return ret; - ret = regmap_update_bits(regmap, TCPC_VENDOR_ADC_CTRL1, ADCINSEL_MASK, 0); + ret = regmap_update_bits(regmap, TCPC_VENDOR_ADC_CTRL1, ADCINSEL, + FIELD_PREP(ADCINSEL, 0)); if (ret < 0) return ret; diff --git a/drivers/usb/typec/tcpm/tcpci_maxim.h b/drivers/usb/typec/tcpm/tcpci_maxim.h index 34076069444f..a41ca9e7ad08 100644 --- a/drivers/usb/typec/tcpm/tcpci_maxim.h +++ b/drivers/usb/typec/tcpm/tcpci_maxim.h @@ -37,8 +37,7 @@ #define WTRCYCLE_4_8_S 1 #define TCPC_VENDOR_ADC_CTRL1 0x91 -#define ADCINSEL_MASK GENMASK(7, 5) -#define ADC_CHANNEL_OFFSET 5 +#define ADCINSEL GENMASK(7, 5) #define ADCEN BIT(0) enum contamiant_state { From 6ba97b42a5f2e04367ae006f65f46f6c1ec78c0b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:21 +0100 Subject: [PATCH 026/145] usb: typec: tcpm/tcpci_maxim: convert to dev_err_probe() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit dev_err_probe() exists as a useful helper ensuring standardized error messages during .probe() and using it also helps to make the code more legible. Use it. Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-14-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpci_maxim_core.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/drivers/usb/typec/tcpm/tcpci_maxim_core.c b/drivers/usb/typec/tcpm/tcpci_maxim_core.c index f811234ca6d8..0c255c4285b0 100644 --- a/drivers/usb/typec/tcpm/tcpci_maxim_core.c +++ b/drivers/usb/typec/tcpm/tcpci_maxim_core.c @@ -484,17 +484,17 @@ static int max_tcpci_probe(struct i2c_client *client) chip->client = client; chip->data.regmap = devm_regmap_init_i2c(client, &max_tcpci_regmap_config); - if (IS_ERR(chip->data.regmap)) { - dev_err(&client->dev, "Regmap init failed\n"); - return PTR_ERR(chip->data.regmap); - } + if (IS_ERR(chip->data.regmap)) + return dev_err_probe(&client->dev, PTR_ERR(chip->data.regmap), + "Regmap init failed\n"); chip->dev = &client->dev; i2c_set_clientdata(client, chip); ret = max_tcpci_read8(chip, TCPC_POWER_STATUS, &power_status); if (ret < 0) - return ret; + return dev_err_probe(&client->dev, ret, + "Failed to read TCPC_POWER_STATUS\n"); /* Chip level tcpci callbacks */ chip->data.set_vbus = max_tcpci_set_vbus; @@ -511,10 +511,10 @@ static int max_tcpci_probe(struct i2c_client *client) max_tcpci_init_regs(chip); chip->tcpci = tcpci_register_port(chip->dev, &chip->data); - if (IS_ERR(chip->tcpci)) { - dev_err(&client->dev, "TCPCI port registration failed\n"); - return PTR_ERR(chip->tcpci); - } + if (IS_ERR(chip->tcpci)) + return dev_err_probe(&client->dev, PTR_ERR(chip->tcpci), + "TCPCI port registration failed\n"); + chip->port = tcpci_get_tcpm_port(chip->tcpci); ret = max_tcpci_init_alert(chip, client); if (ret < 0) @@ -526,7 +526,8 @@ static int max_tcpci_probe(struct i2c_client *client) unreg_port: tcpci_unregister_port(chip->tcpci); - return ret; + return dev_err_probe(&client->dev, ret, + "Maxim TCPCI driver initialization failed\n"); } static void max_tcpci_remove(struct i2c_client *client) From e50f0887804e60584dc3223a06980597b7e8b2a8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Wed, 10 Jul 2024 11:36:22 +0100 Subject: [PATCH 027/145] usb: typec: tcpm/tcpci_maxim: use device managed TCPCI port deregistration MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Instead of open-coding the call to tcpci_unregister_port() in various places, let's just register a hook using devm_add_action_or_reset() so that it gets called automatically as and when necessary by the device management APIs. Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-15-0ec1f41f4263@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpci_maxim_core.c | 30 +++++++++++------------ 1 file changed, 14 insertions(+), 16 deletions(-) diff --git a/drivers/usb/typec/tcpm/tcpci_maxim_core.c b/drivers/usb/typec/tcpm/tcpci_maxim_core.c index 0c255c4285b0..1584ab2983be 100644 --- a/drivers/usb/typec/tcpm/tcpci_maxim_core.c +++ b/drivers/usb/typec/tcpm/tcpci_maxim_core.c @@ -472,6 +472,11 @@ static bool max_tcpci_attempt_vconn_swap_discovery(struct tcpci *tcpci, struct t return true; } +static void max_tcpci_unregister_tcpci_port(void *tcpci) +{ + tcpci_unregister_port(tcpci); +} + static int max_tcpci_probe(struct i2c_client *client) { int ret; @@ -515,27 +520,21 @@ static int max_tcpci_probe(struct i2c_client *client) return dev_err_probe(&client->dev, PTR_ERR(chip->tcpci), "TCPCI port registration failed\n"); + ret = devm_add_action_or_reset(&client->dev, + max_tcpci_unregister_tcpci_port, + chip->tcpci); + if (ret) + return ret; + chip->port = tcpci_get_tcpm_port(chip->tcpci); + ret = max_tcpci_init_alert(chip, client); if (ret < 0) - goto unreg_port; + return dev_err_probe(&client->dev, ret, + "IRQ initialization failed\n"); device_init_wakeup(chip->dev, true); return 0; - -unreg_port: - tcpci_unregister_port(chip->tcpci); - - return dev_err_probe(&client->dev, ret, - "Maxim TCPCI driver initialization failed\n"); -} - -static void max_tcpci_remove(struct i2c_client *client) -{ - struct max_tcpci_chip *chip = i2c_get_clientdata(client); - - if (!IS_ERR_OR_NULL(chip->tcpci)) - tcpci_unregister_port(chip->tcpci); } static const struct i2c_device_id max_tcpci_id[] = { @@ -558,7 +557,6 @@ static struct i2c_driver max_tcpci_i2c_driver = { .of_match_table = of_match_ptr(max_tcpci_of_match), }, .probe = max_tcpci_probe, - .remove = max_tcpci_remove, .id_table = max_tcpci_id, }; module_i2c_driver(max_tcpci_i2c_driver); From 1380f158a8af0fa57e7db45623ec6bd9853a7ac6 Mon Sep 17 00:00:00 2001 From: "Rob Herring (Arm)" Date: Wed, 31 Jul 2024 13:12:56 -0600 Subject: [PATCH 028/145] usb: chipidea: Use of_property_present() Use of_property_present() to test for property presence rather than of_get_property(). This is part of a larger effort to remove callers of of_get_property() and similar functions. of_get_property() leaks the DT property data pointer which is a problem for dynamically allocated nodes which may be freed. Signed-off-by: Rob Herring (Arm) Link: https://lore.kernel.org/r/20240731191312.1710417-18-robh@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci_hdrc_imx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index bdc04ce919f7..c64ab0e07ea0 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -128,7 +128,7 @@ static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev) * In case the fsl,usbmisc property is not present this device doesn't * need usbmisc. Return NULL (which is no error here) */ - if (!of_get_property(np, "fsl,usbmisc", NULL)) + if (!of_property_present(np, "fsl,usbmisc")) return NULL; data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); From 08d6fd691bdd5d6e7881ce42ca6774ed92b10896 Mon Sep 17 00:00:00 2001 From: Akash Kumar Date: Thu, 1 Aug 2024 11:00:03 +0530 Subject: [PATCH 029/145] usb: gadget: Increase max configuration interface to 32 Currently, max configuration interfaces are limited to 16, which fails for compositions containing 10 UVC configurations with interrupt ep disabled along with other configurations , and we see bind failures while allocating interface ID in uvc bind. Increase max configuration interface to 32 to support any large compositions limited to same size as usb device endpoints as interfaces cannot be more than endpoints. Signed-off-by: Akash Kumar Link: https://lore.kernel.org/r/20240801053003.15153-1-quic_akakum@quicinc.com Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/composite.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index af3cd2aae4bc..6e38fb9d2117 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -256,7 +256,7 @@ int config_ep_by_speed(struct usb_gadget *g, struct usb_function *f, struct usb_ep *_ep); int usb_func_wakeup(struct usb_function *func); -#define MAX_CONFIG_INTERFACES 16 /* arbitrary; max 255 */ +#define MAX_CONFIG_INTERFACES 32 /** * struct usb_configuration - represents one gadget configuration From 260126159200c2724dab14dd332f79282ff9721a Mon Sep 17 00:00:00 2001 From: Abhishek Tamboli Date: Fri, 2 Aug 2024 00:32:09 +0530 Subject: [PATCH 030/145] usb: gadget: u_audio: Use C99 syntax for array initializers Convert array initializers to C99 syntax by adding the '=' after each designated initializer. Fix the following smatch warnings: drivers/usb/gadget/function/u_audio.c:1117:20: warning: obsolete array initializer, use C99 syntax drivers/usb/gadget/function/u_audio.c:1124:28: warning: obsolete array initializer, use C99 syntax drivers/usb/gadget/function/u_audio.c:1131:19: warning: obsolete array initializer, use C99 syntax drivers/usb/gadget/function/u_audio.c:1138:27: warning: obsolete array initializer, use C99 syntax drivers/usb/gadget/function/u_audio.c:1145:25: warning: obsolete array initializer, use C99 syntax Also, fix two checkpatch.pl warnings: WARNING: please, no spaces at the start of a line + [UAC_FBACK_CTRL] = {$ WARNING: please, no spaces at the start of a line + [UAC_MUTE_CTRL] = {$ Signed-off-by: Abhishek Tamboli Reviewed-by: Ricardo B. Marliere Link: https://lore.kernel.org/r/20240801190209.500373-1-abhishektamboli9@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/function/u_audio.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/usb/gadget/function/u_audio.c b/drivers/usb/gadget/function/u_audio.c index 89af0feb7512..0b3b8adf00c0 100644 --- a/drivers/usb/gadget/function/u_audio.c +++ b/drivers/usb/gadget/function/u_audio.c @@ -1114,35 +1114,35 @@ static int u_audio_rate_get(struct snd_kcontrol *kcontrol, } static struct snd_kcontrol_new u_audio_controls[] = { - [UAC_FBACK_CTRL] { + [UAC_FBACK_CTRL] = { .iface = SNDRV_CTL_ELEM_IFACE_PCM, .name = "Capture Pitch 1000000", .info = u_audio_pitch_info, .get = u_audio_pitch_get, .put = u_audio_pitch_put, }, - [UAC_P_PITCH_CTRL] { + [UAC_P_PITCH_CTRL] = { .iface = SNDRV_CTL_ELEM_IFACE_PCM, .name = "Playback Pitch 1000000", .info = u_audio_pitch_info, .get = u_audio_pitch_get, .put = u_audio_pitch_put, }, - [UAC_MUTE_CTRL] { + [UAC_MUTE_CTRL] = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", /* will be filled later */ .info = u_audio_mute_info, .get = u_audio_mute_get, .put = u_audio_mute_put, }, - [UAC_VOLUME_CTRL] { + [UAC_VOLUME_CTRL] = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", /* will be filled later */ .info = u_audio_volume_info, .get = u_audio_volume_get, .put = u_audio_volume_put, }, - [UAC_RATE_CTRL] { + [UAC_RATE_CTRL] = { .iface = SNDRV_CTL_ELEM_IFACE_PCM, .name = "", /* will be filled later */ .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, From 89b7539123bf970d7c013645558bc344aef792b0 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Tue, 6 Aug 2024 08:42:31 -0300 Subject: [PATCH 031/145] usb: dwc3: imx8mp: Switch to RUNTIME/SYSTEM_SLEEP_PM_OPS() Replace SET_RUNTIME_PM_OPS()/SET SYSTEM_SLEEP_PM_OPS() with their modern RUNTIME_PM_OPS() and SYSTEM_SLEEP_PM_OPS() alternatives. The combined usage of pm_ptr() and RUNTIME_PM_OPS/SYSTEM_SLEEP_PM_OPS() allows the compiler to evaluate if the runtime suspend/resume() functions are used at build time or are simply dead code. This allows removing the __maybe_unused notation from the runtime suspend/resume() functions. Signed-off-by: Fabio Estevam Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/20240806114231.2603055-1-festevam@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-imx8mp.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-imx8mp.c b/drivers/usb/dwc3/dwc3-imx8mp.c index 8ee448068503..392fa1232788 100644 --- a/drivers/usb/dwc3/dwc3-imx8mp.c +++ b/drivers/usb/dwc3/dwc3-imx8mp.c @@ -282,8 +282,7 @@ static void dwc3_imx8mp_remove(struct platform_device *pdev) pm_runtime_put_noidle(dev); } -static int __maybe_unused dwc3_imx8mp_suspend(struct dwc3_imx8mp *dwc3_imx, - pm_message_t msg) +static int dwc3_imx8mp_suspend(struct dwc3_imx8mp *dwc3_imx, pm_message_t msg) { if (dwc3_imx->pm_suspended) return 0; @@ -297,8 +296,7 @@ static int __maybe_unused dwc3_imx8mp_suspend(struct dwc3_imx8mp *dwc3_imx, return 0; } -static int __maybe_unused dwc3_imx8mp_resume(struct dwc3_imx8mp *dwc3_imx, - pm_message_t msg) +static int dwc3_imx8mp_resume(struct dwc3_imx8mp *dwc3_imx, pm_message_t msg) { struct dwc3 *dwc = platform_get_drvdata(dwc3_imx->dwc3); int ret = 0; @@ -331,7 +329,7 @@ static int __maybe_unused dwc3_imx8mp_resume(struct dwc3_imx8mp *dwc3_imx, return ret; } -static int __maybe_unused dwc3_imx8mp_pm_suspend(struct device *dev) +static int dwc3_imx8mp_pm_suspend(struct device *dev) { struct dwc3_imx8mp *dwc3_imx = dev_get_drvdata(dev); int ret; @@ -349,7 +347,7 @@ static int __maybe_unused dwc3_imx8mp_pm_suspend(struct device *dev) return ret; } -static int __maybe_unused dwc3_imx8mp_pm_resume(struct device *dev) +static int dwc3_imx8mp_pm_resume(struct device *dev) { struct dwc3_imx8mp *dwc3_imx = dev_get_drvdata(dev); int ret; @@ -379,7 +377,7 @@ static int __maybe_unused dwc3_imx8mp_pm_resume(struct device *dev) return ret; } -static int __maybe_unused dwc3_imx8mp_runtime_suspend(struct device *dev) +static int dwc3_imx8mp_runtime_suspend(struct device *dev) { struct dwc3_imx8mp *dwc3_imx = dev_get_drvdata(dev); @@ -388,7 +386,7 @@ static int __maybe_unused dwc3_imx8mp_runtime_suspend(struct device *dev) return dwc3_imx8mp_suspend(dwc3_imx, PMSG_AUTO_SUSPEND); } -static int __maybe_unused dwc3_imx8mp_runtime_resume(struct device *dev) +static int dwc3_imx8mp_runtime_resume(struct device *dev) { struct dwc3_imx8mp *dwc3_imx = dev_get_drvdata(dev); @@ -398,9 +396,9 @@ static int __maybe_unused dwc3_imx8mp_runtime_resume(struct device *dev) } static const struct dev_pm_ops dwc3_imx8mp_dev_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(dwc3_imx8mp_pm_suspend, dwc3_imx8mp_pm_resume) - SET_RUNTIME_PM_OPS(dwc3_imx8mp_runtime_suspend, - dwc3_imx8mp_runtime_resume, NULL) + SYSTEM_SLEEP_PM_OPS(dwc3_imx8mp_pm_suspend, dwc3_imx8mp_pm_resume) + RUNTIME_PM_OPS(dwc3_imx8mp_runtime_suspend, dwc3_imx8mp_runtime_resume, + NULL) }; static const struct of_device_id dwc3_imx8mp_of_match[] = { @@ -414,7 +412,7 @@ static struct platform_driver dwc3_imx8mp_driver = { .remove_new = dwc3_imx8mp_remove, .driver = { .name = "imx8mp-dwc3", - .pm = &dwc3_imx8mp_dev_pm_ops, + .pm = pm_ptr(&dwc3_imx8mp_dev_pm_ops), .of_match_table = dwc3_imx8mp_of_match, }, }; From f358602425486fce2eac1a9592444c9840557754 Mon Sep 17 00:00:00 2001 From: "Rob Herring (Arm)" Date: Wed, 31 Jul 2024 14:14:00 -0600 Subject: [PATCH 032/145] usb: dwc3: Use of_property_read_variable_u32_array() to read "power" There's no need to get the length of an DT array property before parsing the array. of_property_read_variable_u32_array() takes a minimum and maximum length and returns the actual length (or error code). This is part of a larger effort to remove callers of of_find_property() and similar functions. of_find_property() leaks the DT struct property and data pointers which is a problem for dynamically allocated nodes which may be freed. Signed-off-by: Rob Herring (Arm) Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/20240731201407.1838385-5-robh@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-octeon.c | 19 ++++--------------- 1 file changed, 4 insertions(+), 15 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-octeon.c b/drivers/usb/dwc3/dwc3-octeon.c index 6010135e1acc..1a3b205367fd 100644 --- a/drivers/usb/dwc3/dwc3-octeon.c +++ b/drivers/usb/dwc3/dwc3-octeon.c @@ -419,7 +419,7 @@ static int dwc3_octeon_probe(struct platform_device *pdev) int ref_clk_sel, ref_clk_fsel, mpll_mul; int power_active_low, power_gpio; int err, len; - u32 clock_rate; + u32 clock_rate, gpio_pwr[3]; if (of_property_read_u32(node, "refclk-frequency", &clock_rate)) { dev_err(dev, "No UCTL \"refclk-frequency\"\n"); @@ -476,21 +476,10 @@ static int dwc3_octeon_probe(struct platform_device *pdev) power_gpio = DWC3_GPIO_POWER_NONE; power_active_low = 0; - if (of_find_property(node, "power", &len)) { - u32 gpio_pwr[3]; - - switch (len) { - case 8: - of_property_read_u32_array(node, "power", gpio_pwr, 2); - break; - case 12: - of_property_read_u32_array(node, "power", gpio_pwr, 3); + len = of_property_read_variable_u32_array(node, "power", gpio_pwr, 2, 3); + if (len > 0) { + if (len == 3) power_active_low = gpio_pwr[2] & 0x01; - break; - default: - dev_err(dev, "invalid power configuration\n"); - return -EINVAL; - } power_gpio = gpio_pwr[1]; } From 25f51b76f90f10f9bf2fbc05fc51cf685da7ccad Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 31 Jul 2024 22:32:29 +0200 Subject: [PATCH 033/145] xhci-pci: Make xhci-pci-renesas a proper modular driver If CONFIG_USB_XHCI_PCI_RENESAS is enabled, xhci-pci conditionally calls into the xhci-pci-renesas module, which means both modules must be loaded to use any xHCI PCI controller. The MODULE_FIRMWARE declaration in the base xhci-pci module causes initramfs-tools to check for and warn about missing firmware for the Renesas xHCI controllers, when any xHCI PCI controller is present. And because of the previous oddity, simply moving this declaration to xhci-pci-renesas wouldn't help. To fix this, reverse the relationship between the modules: - Remove the quirk for the Renesas xHCIs, and the driver_data structure used only for them - In xhci-pci: - Rename xhci_pci_probe() to xhci_pci_common_probe() - Export xhci_pci_common_probe() and xhci_pci_remove() - Use a new probe function that rejects the Renesas xHCIs and then calls the common probe function - In xhci-pci-renesas: - Stop exporting renesas_xhci_check_request_fw() - Add a probe function that calls renesas_xhci_check_request_fw() followed by xhci_pci_common_probe() - Add and register a new pci_driver matching only the Renesas xHCIs and using its own probe function, but with other operations the same as in xhci-pci - Make CONFIG_USB_XHCI_PCI_RENESAS depend on CONFIG_USB_XHCI_PCI, not the other way around Finally, move the MODULE_FIRMWARE declaration to xhci-pci-renesas. Signed-off-by: Ben Hutchings Tested-by: Cyril Brulebois Link: https://lore.kernel.org/r/ZqqfXYRJf7kGaqus@decadent.org.uk Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/Kconfig | 2 +- drivers/usb/host/xhci-pci-renesas.c | 48 ++++++++++++++++++++---- drivers/usb/host/xhci-pci.c | 57 ++++++++++------------------- drivers/usb/host/xhci-pci.h | 19 +--------- drivers/usb/host/xhci.h | 2 +- 5 files changed, 64 insertions(+), 64 deletions(-) diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 4448d0ab06f0..d011d6c753ed 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -40,11 +40,11 @@ config USB_XHCI_DBGCAP config USB_XHCI_PCI tristate depends on USB_PCI - depends on USB_XHCI_PCI_RENESAS || !USB_XHCI_PCI_RENESAS default y config USB_XHCI_PCI_RENESAS tristate "Support for additional Renesas xHCI controller with firmware" + depends on USB_XHCI_PCI help Say 'Y' to enable the support for the Renesas xHCI controller with firmware. Make sure you have the firmware for the device and diff --git a/drivers/usb/host/xhci-pci-renesas.c b/drivers/usb/host/xhci-pci-renesas.c index 247cc7c2ce70..30cc5a1380a5 100644 --- a/drivers/usb/host/xhci-pci-renesas.c +++ b/drivers/usb/host/xhci-pci-renesas.c @@ -50,6 +50,8 @@ #define RENESAS_RETRY 10000 #define RENESAS_DELAY 10 +#define RENESAS_FW_NAME "renesas_usb_fw.mem" + static int renesas_fw_download_image(struct pci_dev *dev, const u32 *fw, size_t step, bool rom) { @@ -573,12 +575,10 @@ exit: return err; } -int renesas_xhci_check_request_fw(struct pci_dev *pdev, - const struct pci_device_id *id) +static int renesas_xhci_check_request_fw(struct pci_dev *pdev, + const struct pci_device_id *id) { - struct xhci_driver_data *driver_data = - (struct xhci_driver_data *)id->driver_data; - const char *fw_name = driver_data->firmware; + const char fw_name[] = RENESAS_FW_NAME; const struct firmware *fw; bool has_rom; int err; @@ -625,7 +625,41 @@ exit: release_firmware(fw); return err; } -EXPORT_SYMBOL_GPL(renesas_xhci_check_request_fw); -MODULE_DESCRIPTION("Support for Renesas xHCI controller with firmware"); +static int +xhci_pci_renesas_probe(struct pci_dev *dev, const struct pci_device_id *id) +{ + int retval; + + retval = renesas_xhci_check_request_fw(dev, id); + if (retval) + return retval; + + return xhci_pci_common_probe(dev, id); +} + +static const struct pci_device_id pci_ids[] = { + { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, 0x0014) }, + { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, 0x0015) }, + { /* end: all zeroes */ } +}; +MODULE_DEVICE_TABLE(pci, pci_ids); + +static struct pci_driver xhci_renesas_pci_driver = { + .name = "xhci-pci-renesas", + .id_table = pci_ids, + + .probe = xhci_pci_renesas_probe, + .remove = xhci_pci_remove, + + .shutdown = usb_hcd_pci_shutdown, + .driver = { + .pm = pm_ptr(&usb_hcd_pci_pm_ops), + }, +}; +module_pci_driver(xhci_renesas_pci_driver); + +MODULE_DESCRIPTION("Renesas xHCI PCI Host Controller Driver"); +MODULE_FIRMWARE(RENESAS_FW_NAME); +MODULE_IMPORT_NS(xhci); MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index dc1e345ab67e..b5705ed01d83 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -235,15 +235,6 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) { struct pci_dev *pdev = to_pci_dev(dev); - struct xhci_driver_data *driver_data; - const struct pci_device_id *id; - - id = pci_match_id(to_pci_driver(pdev->dev.driver)->id_table, pdev); - - if (id && id->driver_data) { - driver_data = (struct xhci_driver_data *)id->driver_data; - xhci->quirks |= driver_data->quirks; - } /* Look for vendor-specific quirks */ if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC && @@ -572,21 +563,13 @@ static int xhci_pci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hd * We need to register our own PCI probe function (instead of the USB core's * function) in order to create a second roothub under xHCI. */ -static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) +int xhci_pci_common_probe(struct pci_dev *dev, const struct pci_device_id *id) { int retval; struct xhci_hcd *xhci; struct usb_hcd *hcd; - struct xhci_driver_data *driver_data; struct reset_control *reset; - driver_data = (struct xhci_driver_data *)id->driver_data; - if (driver_data && driver_data->quirks & XHCI_RENESAS_FW_QUIRK) { - retval = renesas_xhci_check_request_fw(dev, id); - if (retval) - return retval; - } - reset = devm_reset_control_get_optional_exclusive(&dev->dev, NULL); if (IS_ERR(reset)) return PTR_ERR(reset); @@ -651,8 +634,24 @@ put_runtime_pm: pm_runtime_put_noidle(&dev->dev); return retval; } +EXPORT_SYMBOL_NS_GPL(xhci_pci_common_probe, xhci); -static void xhci_pci_remove(struct pci_dev *dev) +static const struct pci_device_id pci_ids_reject[] = { + /* handled by xhci-pci-renesas */ + { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, 0x0014) }, + { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, 0x0015) }, + { /* end: all zeroes */ } +}; + +static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) +{ + if (pci_match_id(pci_ids_reject, dev)) + return -ENODEV; + + return xhci_pci_common_probe(dev, id); +} + +void xhci_pci_remove(struct pci_dev *dev) { struct xhci_hcd *xhci; @@ -675,6 +674,7 @@ static void xhci_pci_remove(struct pci_dev *dev) usb_hcd_pci_remove(dev); } +EXPORT_SYMBOL_NS_GPL(xhci_pci_remove, xhci); /* * In some Intel xHCI controllers, in order to get D3 working, @@ -882,19 +882,8 @@ static void xhci_pci_shutdown(struct usb_hcd *hcd) /*-------------------------------------------------------------------------*/ -static const struct xhci_driver_data reneses_data = { - .quirks = XHCI_RENESAS_FW_QUIRK, - .firmware = "renesas_usb_fw.mem", -}; - /* PCI driver selection metadata; PCI hotplugging uses this */ static const struct pci_device_id pci_ids[] = { - { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, 0x0014), - .driver_data = (unsigned long)&reneses_data, - }, - { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, 0x0015), - .driver_data = (unsigned long)&reneses_data, - }, /* handle any USB 3.0 xHCI controller */ { PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0), }, @@ -902,14 +891,6 @@ static const struct pci_device_id pci_ids[] = { }; MODULE_DEVICE_TABLE(pci, pci_ids); -/* - * Without CONFIG_USB_XHCI_PCI_RENESAS renesas_xhci_check_request_fw() won't - * load firmware, so don't encumber the xhci-pci driver with it. - */ -#if IS_ENABLED(CONFIG_USB_XHCI_PCI_RENESAS) -MODULE_FIRMWARE("renesas_usb_fw.mem"); -#endif - /* pci driver glue; this is a "new style" PCI driver module */ static struct pci_driver xhci_pci_driver = { .name = hcd_name, diff --git a/drivers/usb/host/xhci-pci.h b/drivers/usb/host/xhci-pci.h index cb9a8f331a44..e87c7d9d76b8 100644 --- a/drivers/usb/host/xhci-pci.h +++ b/drivers/usb/host/xhci-pci.h @@ -4,22 +4,7 @@ #ifndef XHCI_PCI_H #define XHCI_PCI_H -#if IS_ENABLED(CONFIG_USB_XHCI_PCI_RENESAS) -int renesas_xhci_check_request_fw(struct pci_dev *dev, - const struct pci_device_id *id); - -#else -static int renesas_xhci_check_request_fw(struct pci_dev *dev, - const struct pci_device_id *id) -{ - return 0; -} - -#endif - -struct xhci_driver_data { - u64 quirks; - const char *firmware; -}; +int xhci_pci_common_probe(struct pci_dev *dev, const struct pci_device_id *id); +void xhci_pci_remove(struct pci_dev *dev); #endif diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index ebd0afd59a60..df2c81db21a1 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1616,7 +1616,7 @@ struct xhci_hcd { #define XHCI_DEFAULT_PM_RUNTIME_ALLOW BIT_ULL(33) #define XHCI_RESET_PLL_ON_DISCONNECT BIT_ULL(34) #define XHCI_SNPS_BROKEN_SUSPEND BIT_ULL(35) -#define XHCI_RENESAS_FW_QUIRK BIT_ULL(36) +/* Reserved. It was XHCI_RENESAS_FW_QUIRK */ #define XHCI_SKIP_PHY_INIT BIT_ULL(37) #define XHCI_DISABLE_SPARSE BIT_ULL(38) #define XHCI_SG_TRB_CACHE_SIZE_QUIRK BIT_ULL(39) From c6a6c7d0c07a84cea80310fde8030e30fa8bb754 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Tue, 6 Aug 2024 17:25:24 +0100 Subject: [PATCH 034/145] usb: typec: tcpm/tcpci_maxim: fix non-contaminant CC handling MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit tcpci_maxim currently never triggers the TCPM state machine when CC status has not changed due to a contaminant but due to a real connection event, i.e. a genuine plug event, meaning the system will stay idle and not notify any subscribers. The reason is that the initial state of the port is 'toggling', which causes _max_tcpci_irq() to only drive the contamination part of the TCPM state machine (via tcpm_port_clean()). What should happen instead is that if no contamination was detected, the TCPM should be notified of the CC change in this case. To fix this, we update ...is_contaminant() to also allow its caller to determine if more CC processing is required and then call into the TCPM as required. While at it, add a kernel-doc for max_contaminant_is_contaminant(). Note: the code has an issue where I2C errors during contaminant detection also cause the TCPM state machine to not be updated. This commit doesn't change this behaviour and should be addressed by follow-up commit(s). Signed-off-by: André Draszik Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240806-max33359-toggling-v2-1-a66ab37baafb@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/maxim_contaminant.c | 7 +++++-- drivers/usb/typec/tcpm/tcpci_maxim.h | 16 +++++++++++++++- drivers/usb/typec/tcpm/tcpci_maxim_core.c | 11 +++++++---- 3 files changed, 27 insertions(+), 7 deletions(-) diff --git a/drivers/usb/typec/tcpm/maxim_contaminant.c b/drivers/usb/typec/tcpm/maxim_contaminant.c index 7bfec45e8f4f..22163d8f9eb0 100644 --- a/drivers/usb/typec/tcpm/maxim_contaminant.c +++ b/drivers/usb/typec/tcpm/maxim_contaminant.c @@ -324,11 +324,14 @@ static int max_contaminant_enable_dry_detection(struct max_tcpci_chip *chip) return 0; } -bool max_contaminant_is_contaminant(struct max_tcpci_chip *chip, bool disconnect_while_debounce) +bool max_contaminant_is_contaminant(struct max_tcpci_chip *chip, bool disconnect_while_debounce, + bool *cc_handled) { u8 cc_status, pwr_cntl; int ret; + *cc_handled = true; + ret = max_tcpci_read8(chip, TCPC_CC_STATUS, &cc_status); if (ret < 0) return false; @@ -370,7 +373,6 @@ bool max_contaminant_is_contaminant(struct max_tcpci_chip *chip, bool disconnect return true; } } - return false; } else if (chip->contaminant_state == DETECTED) { if (!(cc_status & TCPC_CC_STATUS_TOGGLING)) { chip->contaminant_state = max_contaminant_detect_contaminant(chip); @@ -381,6 +383,7 @@ bool max_contaminant_is_contaminant(struct max_tcpci_chip *chip, bool disconnect } } + *cc_handled = false; return false; } diff --git a/drivers/usb/typec/tcpm/tcpci_maxim.h b/drivers/usb/typec/tcpm/tcpci_maxim.h index a41ca9e7ad08..76270d5c2838 100644 --- a/drivers/usb/typec/tcpm/tcpci_maxim.h +++ b/drivers/usb/typec/tcpm/tcpci_maxim.h @@ -81,6 +81,20 @@ static inline int max_tcpci_write8(struct max_tcpci_chip *chip, unsigned int reg return regmap_raw_write(chip->data.regmap, reg, &val, sizeof(u8)); } -bool max_contaminant_is_contaminant(struct max_tcpci_chip *chip, bool disconnect_while_debounce); +/** + * max_contaminant_is_contaminant - Test if CC was toggled due to contaminant + * + * @chip: Handle to a struct max_tcpci_chip + * @disconnect_while_debounce: Whether the disconnect was detected when CC + * pins were debouncing + * @cc_handled: Returns whether or not update to CC status was handled here + * + * Determine if a contaminant was detected. + * + * Returns: true if a contaminant was detected, false otherwise. cc_handled + * is updated to reflect whether or not further CC handling is required. + */ +bool max_contaminant_is_contaminant(struct max_tcpci_chip *chip, bool disconnect_while_debounce, + bool *cc_handled); #endif // TCPCI_MAXIM_H_ diff --git a/drivers/usb/typec/tcpm/tcpci_maxim_core.c b/drivers/usb/typec/tcpm/tcpci_maxim_core.c index 1584ab2983be..fd1b80593367 100644 --- a/drivers/usb/typec/tcpm/tcpci_maxim_core.c +++ b/drivers/usb/typec/tcpm/tcpci_maxim_core.c @@ -357,12 +357,14 @@ static irqreturn_t _max_tcpci_irq(struct max_tcpci_chip *chip, u16 status) tcpm_vbus_change(chip->port); if (status & TCPC_ALERT_CC_STATUS) { + bool cc_handled = false; + if (chip->contaminant_state == DETECTED || tcpm_port_is_toggling(chip->port)) { - if (!max_contaminant_is_contaminant(chip, false)) + if (!max_contaminant_is_contaminant(chip, false, &cc_handled)) tcpm_port_clean(chip->port); - } else { - tcpm_cc_change(chip->port); } + if (!cc_handled) + tcpm_cc_change(chip->port); } if (status & TCPC_ALERT_POWER_STATUS) @@ -455,8 +457,9 @@ static int tcpci_init(struct tcpci *tcpci, struct tcpci_data *data) static void max_tcpci_check_contaminant(struct tcpci *tcpci, struct tcpci_data *tdata) { struct max_tcpci_chip *chip = tdata_to_max_tcpci(tdata); + bool cc_handled; - if (!max_contaminant_is_contaminant(chip, true)) + if (!max_contaminant_is_contaminant(chip, true, &cc_handled)) tcpm_port_clean(chip->port); } From 966d73152078d62f526f0aa6942d9226bdc8c764 Mon Sep 17 00:00:00 2001 From: Xu Yang Date: Fri, 26 Jul 2024 19:32:02 +0800 Subject: [PATCH 035/145] usb: phy: mxs: enable regulator phy-3p0 to improve signal qualilty Enable regulator 'phy-3p0' to pass eye diagram test since it improve signal qualilty. Signed-off-by: Xu Yang Reviewed-by: Peter Chen Link: https://lore.kernel.org/r/20240726113207.3393247-1-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/phy/phy-mxs-usb.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index 920a32cd094d..d9d29f0b37de 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -18,6 +18,7 @@ #include #include #include +#include #define DRIVER_NAME "mxs_phy" @@ -204,6 +205,7 @@ struct mxs_phy { int port_id; u32 tx_reg_set; u32 tx_reg_mask; + struct regulator *phy_3p0; }; static inline bool is_imx6q_phy(struct mxs_phy *mxs_phy) @@ -288,6 +290,16 @@ static int mxs_phy_hw_init(struct mxs_phy *mxs_phy) if (ret) goto disable_pll; + if (mxs_phy->phy_3p0) { + ret = regulator_enable(mxs_phy->phy_3p0); + if (ret) { + dev_err(mxs_phy->phy.dev, + "Failed to enable 3p0 regulator, ret=%d\n", + ret); + return ret; + } + } + /* Power up the PHY */ writel(0, base + HW_USBPHY_PWD); @@ -448,6 +460,9 @@ static void mxs_phy_shutdown(struct usb_phy *phy) if (is_imx7ulp_phy(mxs_phy)) mxs_phy_pll_enable(phy->io_priv, false); + if (mxs_phy->phy_3p0) + regulator_disable(mxs_phy->phy_3p0); + clk_disable_unprepare(mxs_phy->clk); } @@ -789,6 +804,17 @@ static int mxs_phy_probe(struct platform_device *pdev) mxs_phy->clk = clk; mxs_phy->data = of_device_get_match_data(&pdev->dev); + mxs_phy->phy_3p0 = devm_regulator_get(&pdev->dev, "phy-3p0"); + if (PTR_ERR(mxs_phy->phy_3p0) == -ENODEV) + /* not exist */ + mxs_phy->phy_3p0 = NULL; + else if (IS_ERR(mxs_phy->phy_3p0)) + return dev_err_probe(&pdev->dev, PTR_ERR(mxs_phy->phy_3p0), + "Getting regulator error\n"); + + if (mxs_phy->phy_3p0) + regulator_set_voltage(mxs_phy->phy_3p0, 3200000, 3200000); + platform_set_drvdata(pdev, mxs_phy); device_set_wakeup_capable(&pdev->dev, true); From 82c7a8166ccc5762e4b8f786c3ac90c379465d3e Mon Sep 17 00:00:00 2001 From: Xu Yang Date: Fri, 26 Jul 2024 19:32:03 +0800 Subject: [PATCH 036/145] usb: phy: mxs: keep USBPHY2's clk always on IP require keep USBPHY2's clk always on, so USBPHY2 (PLL7) power can be controlled by suspend signal. USB remote wakeup needs resume signal be sent out as soon as possible to match USB requirements. Signed-off-by: Xu Yang Reviewed-by: Peter Chen Link: https://lore.kernel.org/r/20240726113207.3393247-2-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/phy/phy-mxs-usb.c | 33 ++++++++++++++++++++++++++------- 1 file changed, 26 insertions(+), 7 deletions(-) diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index d9d29f0b37de..e172af75f602 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -150,6 +150,15 @@ #define MXS_PHY_TX_D_CAL_MIN 79 #define MXS_PHY_TX_D_CAL_MAX 119 +/* + * At imx6q/6sl/6sx, the PHY2's clock is controlled by hardware directly, + * eg, according to PHY's suspend status. In these PHYs, we only need to + * open the clock at the initialization and close it at its shutdown routine. + * These PHYs can send resume signal without software interfere if not + * gate clock. + */ +#define MXS_PHY_HARDWARE_CONTROL_PHY2_CLK BIT(4) + struct mxs_phy_data { unsigned int flags; }; @@ -161,12 +170,14 @@ static const struct mxs_phy_data imx23_phy_data = { static const struct mxs_phy_data imx6q_phy_data = { .flags = MXS_PHY_SENDING_SOF_TOO_FAST | MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS | - MXS_PHY_NEED_IP_FIX, + MXS_PHY_NEED_IP_FIX | + MXS_PHY_HARDWARE_CONTROL_PHY2_CLK, }; static const struct mxs_phy_data imx6sl_phy_data = { .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS | - MXS_PHY_NEED_IP_FIX, + MXS_PHY_NEED_IP_FIX | + MXS_PHY_HARDWARE_CONTROL_PHY2_CLK, }; static const struct mxs_phy_data vf610_phy_data = { @@ -175,7 +186,8 @@ static const struct mxs_phy_data vf610_phy_data = { }; static const struct mxs_phy_data imx6sx_phy_data = { - .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS, + .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS | + MXS_PHY_HARDWARE_CONTROL_PHY2_CLK, }; static const struct mxs_phy_data imx6ul_phy_data = { @@ -518,12 +530,19 @@ static int mxs_phy_suspend(struct usb_phy *x, int suspend) } writel(BM_USBPHY_CTRL_CLKGATE, x->io_priv + HW_USBPHY_CTRL_SET); - clk_disable_unprepare(mxs_phy->clk); + if (!(mxs_phy->port_id == 1 && + (mxs_phy->data->flags & + MXS_PHY_HARDWARE_CONTROL_PHY2_CLK))) + clk_disable_unprepare(mxs_phy->clk); } else { mxs_phy_clock_switch_delay(); - ret = clk_prepare_enable(mxs_phy->clk); - if (ret) - return ret; + if (!(mxs_phy->port_id == 1 && + (mxs_phy->data->flags & + MXS_PHY_HARDWARE_CONTROL_PHY2_CLK))) { + ret = clk_prepare_enable(mxs_phy->clk); + if (ret) + return ret; + } writel(BM_USBPHY_CTRL_CLKGATE, x->io_priv + HW_USBPHY_CTRL_CLR); writel(0, x->io_priv + HW_USBPHY_PWD); From c99b27ef83f4bfd8c191ce914ab605c7e3cc077b Mon Sep 17 00:00:00 2001 From: Xu Yang Date: Fri, 26 Jul 2024 19:32:05 +0800 Subject: [PATCH 037/145] usb: phy: mxs: add wakeup enable for imx7ulp This wakeup setting can enable USB wakeup function even the controller's power is lost, and both A7 and M4 are in VLLS mode. Signed-off-by: Xu Yang Reviewed-by: Peter Chen Link: https://lore.kernel.org/r/20240726113207.3393247-4-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/phy/phy-mxs-usb.c | 41 +++++++++++++++++++++++++++++++++-- 1 file changed, 39 insertions(+), 2 deletions(-) diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index e172af75f602..acaae22df3ba 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -118,6 +118,11 @@ #define BM_ANADIG_USB2_MISC_RX_VPIN_FS BIT(29) #define BM_ANADIG_USB2_MISC_RX_VMIN_FS BIT(28) +/* System Integration Module (SIM) Registers */ +#define SIM_GPR1 0x30 + +#define USB_PHY_VLLS_WAKEUP_EN BIT(0) + #define to_mxs_phy(p) container_of((p), struct mxs_phy, phy) /* Do disconnection between PHY and controller without vbus */ @@ -214,6 +219,7 @@ struct mxs_phy { struct clk *clk; const struct mxs_phy_data *data; struct regmap *regmap_anatop; + struct regmap *regmap_sim; int port_id; u32 tx_reg_set; u32 tx_reg_mask; @@ -772,6 +778,17 @@ static int mxs_phy_probe(struct platform_device *pdev) } } + /* Currently, only imx7ulp has SIM module */ + if (of_get_property(np, "nxp,sim", NULL)) { + mxs_phy->regmap_sim = syscon_regmap_lookup_by_phandle + (np, "nxp,sim"); + if (IS_ERR(mxs_phy->regmap_sim)) { + dev_dbg(&pdev->dev, + "failed to find regmap for sim\n"); + return PTR_ERR(mxs_phy->regmap_sim); + } + } + /* Precompute which bits of the TX register are to be updated, if any */ if (!of_property_read_u32(np, "fsl,tx-cal-45-dn-ohms", &val) && val >= MXS_PHY_TX_CAL45_MIN && val <= MXS_PHY_TX_CAL45_MAX) { @@ -849,6 +866,22 @@ static void mxs_phy_remove(struct platform_device *pdev) } #ifdef CONFIG_PM_SLEEP +static void mxs_phy_wakeup_enable(struct mxs_phy *mxs_phy, bool on) +{ + u32 mask = USB_PHY_VLLS_WAKEUP_EN; + + /* If the SoCs don't have SIM, quit */ + if (!mxs_phy->regmap_sim) + return; + + if (on) { + regmap_update_bits(mxs_phy->regmap_sim, SIM_GPR1, mask, mask); + udelay(500); + } else { + regmap_update_bits(mxs_phy->regmap_sim, SIM_GPR1, mask, 0); + } +} + static void mxs_phy_enable_ldo_in_suspend(struct mxs_phy *mxs_phy, bool on) { unsigned int reg = on ? ANADIG_ANA_MISC0_SET : ANADIG_ANA_MISC0_CLR; @@ -869,8 +902,10 @@ static int mxs_phy_system_suspend(struct device *dev) { struct mxs_phy *mxs_phy = dev_get_drvdata(dev); - if (device_may_wakeup(dev)) + if (device_may_wakeup(dev)) { mxs_phy_enable_ldo_in_suspend(mxs_phy, true); + mxs_phy_wakeup_enable(mxs_phy, true); + } return 0; } @@ -879,8 +914,10 @@ static int mxs_phy_system_resume(struct device *dev) { struct mxs_phy *mxs_phy = dev_get_drvdata(dev); - if (device_may_wakeup(dev)) + if (device_may_wakeup(dev)) { mxs_phy_enable_ldo_in_suspend(mxs_phy, false); + mxs_phy_wakeup_enable(mxs_phy, false); + } return 0; } From 2919d888794ec25ae0af79c7ed7f5d48fe4d698f Mon Sep 17 00:00:00 2001 From: Xu Yang Date: Fri, 26 Jul 2024 19:32:06 +0800 Subject: [PATCH 038/145] usb: phy: mxs: enable weak 1p1 regulator for imx6ul during suspend 1p1 is off when the system enters suspend at i.MX6UL. It cause the PHY get wrong USB DP/DM value, then unexpected wakeup may occur if USB wakeup enabled. This will enable weak 1p1 during PHY suspend if vbus exist. So USB DP/DM is correct when system suspend. Signed-off-by: Xu Yang Link: https://lore.kernel.org/r/20240726113207.3393247-5-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/phy/phy-mxs-usb.c | 32 ++++++++++++++++++++++++++++---- 1 file changed, 28 insertions(+), 4 deletions(-) diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index acaae22df3ba..cc4156c1b148 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -71,6 +71,9 @@ #define BM_USBPHY_PLL_EN_USB_CLKS BIT(6) /* Anatop Registers */ +#define ANADIG_REG_1P1_SET 0x114 +#define ANADIG_REG_1P1_CLR 0x118 + #define ANADIG_ANA_MISC0 0x150 #define ANADIG_ANA_MISC0_SET 0x154 #define ANADIG_ANA_MISC0_CLR 0x158 @@ -123,6 +126,9 @@ #define USB_PHY_VLLS_WAKEUP_EN BIT(0) +#define BM_ANADIG_REG_1P1_ENABLE_WEAK_LINREG BIT(18) +#define BM_ANADIG_REG_1P1_TRACK_VDD_SOC_CAP BIT(19) + #define to_mxs_phy(p) container_of((p), struct mxs_phy, phy) /* Do disconnection between PHY and controller without vbus */ @@ -196,7 +202,8 @@ static const struct mxs_phy_data imx6sx_phy_data = { }; static const struct mxs_phy_data imx6ul_phy_data = { - .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS, + .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS | + MXS_PHY_HARDWARE_CONTROL_PHY2_CLK, }; static const struct mxs_phy_data imx7ulp_phy_data = { @@ -241,6 +248,11 @@ static inline bool is_imx7ulp_phy(struct mxs_phy *mxs_phy) return mxs_phy->data == &imx7ulp_phy_data; } +static inline bool is_imx6ul_phy(struct mxs_phy *mxs_phy) +{ + return mxs_phy->data == &imx6ul_phy_data; +} + /* * PHY needs some 32K cycles to switch from 32K clock to * bus (such as AHB/AXI, etc) clock. @@ -884,18 +896,30 @@ static void mxs_phy_wakeup_enable(struct mxs_phy *mxs_phy, bool on) static void mxs_phy_enable_ldo_in_suspend(struct mxs_phy *mxs_phy, bool on) { - unsigned int reg = on ? ANADIG_ANA_MISC0_SET : ANADIG_ANA_MISC0_CLR; + unsigned int reg; + u32 value; /* If the SoCs don't have anatop, quit */ if (!mxs_phy->regmap_anatop) return; - if (is_imx6q_phy(mxs_phy)) + if (is_imx6q_phy(mxs_phy)) { + reg = on ? ANADIG_ANA_MISC0_SET : ANADIG_ANA_MISC0_CLR; regmap_write(mxs_phy->regmap_anatop, reg, BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG); - else if (is_imx6sl_phy(mxs_phy)) + } else if (is_imx6sl_phy(mxs_phy)) { + reg = on ? ANADIG_ANA_MISC0_SET : ANADIG_ANA_MISC0_CLR; regmap_write(mxs_phy->regmap_anatop, reg, BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG_SL); + } else if (is_imx6ul_phy(mxs_phy)) { + reg = on ? ANADIG_REG_1P1_SET : ANADIG_REG_1P1_CLR; + value = BM_ANADIG_REG_1P1_ENABLE_WEAK_LINREG | + BM_ANADIG_REG_1P1_TRACK_VDD_SOC_CAP; + if (mxs_phy_get_vbus_status(mxs_phy) && on) + regmap_write(mxs_phy->regmap_anatop, reg, value); + else if (!on) + regmap_write(mxs_phy->regmap_anatop, reg, value); + } } static int mxs_phy_system_suspend(struct device *dev) From 8952e50e16e383ff7fce873ac7676e0d68a3552b Mon Sep 17 00:00:00 2001 From: Chris Wulff Date: Sat, 3 Aug 2024 20:19:24 -0400 Subject: [PATCH 039/145] usb: gadget: f_uac2: Expose all string descriptors through configfs. This makes all string descriptors configurable for the UAC2 gadget so the user can configure names of terminals and controls. Alt mode names are not included for now and will be in future work related to adding alternate settings. discussion thread for api changes for alt mode settings: https://lore.kernel.org/linux-usb/35be4668-58d3-894a-72cf-de1afaacae45@ivitera.com/T/ Signed-off-by: Chris Wulff Link: https://lore.kernel.org/r/20240804001923.3279431-2-crwulff@gmail.com Signed-off-by: Greg Kroah-Hartman --- .../ABI/testing/configfs-usb-gadget-uac2 | 11 +++ Documentation/usb/gadget-testing.rst | 11 +++ drivers/usb/gadget/function/f_uac2.c | 80 +++++++++++++++---- drivers/usb/gadget/function/u_uac2.h | 15 +++- 4 files changed, 99 insertions(+), 18 deletions(-) diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uac2 b/Documentation/ABI/testing/configfs-usb-gadget-uac2 index a2bf4fd82a5b..133e995c3e92 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-uac2 +++ b/Documentation/ABI/testing/configfs-usb-gadget-uac2 @@ -35,6 +35,17 @@ Description: req_number the number of pre-allocated requests for both capture and playback function_name name of the interface + if_ctrl_name topology control name + clksrc_in_name input clock name + clksrc_out_name output clock name + p_it_name playback input terminal name + p_it_ch_name playback input first channel name + p_ot_name playback output terminal name + p_fu_vol_name playback mute/volume function unit name + c_it_name capture input terminal name + c_it_ch_name capture input first channel name + c_ot_name capture output terminal name + c_fu_vol_name capture mute/volume functional unit name c_terminal_type code of the capture terminal type p_terminal_type code of the playback terminal type ===================== ======================================= diff --git a/Documentation/usb/gadget-testing.rst b/Documentation/usb/gadget-testing.rst index a89b49e639c3..8092e250ec27 100644 --- a/Documentation/usb/gadget-testing.rst +++ b/Documentation/usb/gadget-testing.rst @@ -765,6 +765,17 @@ The uac2 function provides these attributes in its function directory: req_number the number of pre-allocated request for both capture and playback function_name name of the interface + if_ctrl_name topology control name + clksrc_in_name input clock name + clksrc_out_name output clock name + p_it_name playback input terminal name + p_it_ch_name playback input first channel name + p_ot_name playback output terminal name + p_fu_vol_name playback function unit name + c_it_name capture input terminal name + c_it_ch_name capture input first channel name + c_ot_name capture output terminal name + c_fu_vol_name capture functional unit name c_terminal_type code of the capture terminal type p_terminal_type code of the playback terminal type ================ ==================================================== diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c index 2d6d3286ffde..1cdda44455b3 100644 --- a/drivers/usb/gadget/function/f_uac2.c +++ b/drivers/usb/gadget/function/f_uac2.c @@ -95,7 +95,9 @@ enum { STR_CLKSRC_IN, STR_CLKSRC_OUT, STR_USB_IT, + STR_USB_IT_CH, STR_IO_IT, + STR_IO_IT_CH, STR_USB_OT, STR_IO_OT, STR_FU_IN, @@ -104,25 +106,10 @@ enum { STR_AS_OUT_ALT1, STR_AS_IN_ALT0, STR_AS_IN_ALT1, + NUM_STR_DESCRIPTORS, }; -static struct usb_string strings_fn[] = { - /* [STR_ASSOC].s = DYNAMIC, */ - [STR_IF_CTRL].s = "Topology Control", - [STR_CLKSRC_IN].s = "Input Clock", - [STR_CLKSRC_OUT].s = "Output Clock", - [STR_USB_IT].s = "USBH Out", - [STR_IO_IT].s = "USBD Out", - [STR_USB_OT].s = "USBH In", - [STR_IO_OT].s = "USBD In", - [STR_FU_IN].s = "Capture Volume", - [STR_FU_OUT].s = "Playback Volume", - [STR_AS_OUT_ALT0].s = "Playback Inactive", - [STR_AS_OUT_ALT1].s = "Playback Active", - [STR_AS_IN_ALT0].s = "Capture Inactive", - [STR_AS_IN_ALT1].s = "Capture Active", - { }, -}; +static struct usb_string strings_fn[NUM_STR_DESCRIPTORS + 1] = {}; static const char *const speed_names[] = { [USB_SPEED_UNKNOWN] = "UNKNOWN", @@ -1049,6 +1036,23 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) return ret; strings_fn[STR_ASSOC].s = uac2_opts->function_name; + strings_fn[STR_IF_CTRL].s = uac2_opts->if_ctrl_name; + strings_fn[STR_CLKSRC_IN].s = uac2_opts->clksrc_in_name; + strings_fn[STR_CLKSRC_OUT].s = uac2_opts->clksrc_out_name; + + strings_fn[STR_USB_IT].s = uac2_opts->c_it_name; + strings_fn[STR_USB_IT_CH].s = uac2_opts->c_it_ch_name; + strings_fn[STR_IO_OT].s = uac2_opts->c_ot_name; + strings_fn[STR_FU_OUT].s = uac2_opts->c_fu_vol_name; + strings_fn[STR_AS_OUT_ALT0].s = "Playback Inactive"; + strings_fn[STR_AS_OUT_ALT1].s = "Playback Active"; + + strings_fn[STR_IO_IT].s = uac2_opts->p_it_name; + strings_fn[STR_IO_IT_CH].s = uac2_opts->p_it_ch_name; + strings_fn[STR_USB_OT].s = uac2_opts->p_ot_name; + strings_fn[STR_FU_IN].s = uac2_opts->p_fu_vol_name; + strings_fn[STR_AS_IN_ALT0].s = "Capture Inactive"; + strings_fn[STR_AS_IN_ALT1].s = "Capture Active"; us = usb_gstrings_attach(cdev, fn_strings, ARRAY_SIZE(strings_fn)); if (IS_ERR(us)) @@ -1072,7 +1076,9 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) in_clk_src_desc.iClockSource = us[STR_CLKSRC_IN].id; out_clk_src_desc.iClockSource = us[STR_CLKSRC_OUT].id; usb_out_it_desc.iTerminal = us[STR_USB_IT].id; + usb_out_it_desc.iChannelNames = us[STR_USB_IT_CH].id; io_in_it_desc.iTerminal = us[STR_IO_IT].id; + io_in_it_desc.iChannelNames = us[STR_IO_IT_CH].id; usb_in_ot_desc.iTerminal = us[STR_USB_OT].id; io_out_ot_desc.iTerminal = us[STR_IO_OT].id; std_as_out_if0_desc.iInterface = us[STR_AS_OUT_ALT0].id; @@ -2100,10 +2106,24 @@ UAC2_ATTRIBUTE(s16, c_volume_max); UAC2_ATTRIBUTE(s16, c_volume_res); UAC2_ATTRIBUTE(u32, fb_max); UAC2_ATTRIBUTE_STRING(function_name); +UAC2_ATTRIBUTE_STRING(if_ctrl_name); +UAC2_ATTRIBUTE_STRING(clksrc_in_name); +UAC2_ATTRIBUTE_STRING(clksrc_out_name); + +UAC2_ATTRIBUTE_STRING(p_it_name); +UAC2_ATTRIBUTE_STRING(p_it_ch_name); +UAC2_ATTRIBUTE_STRING(p_ot_name); +UAC2_ATTRIBUTE_STRING(p_fu_vol_name); + +UAC2_ATTRIBUTE_STRING(c_it_name); +UAC2_ATTRIBUTE_STRING(c_it_ch_name); +UAC2_ATTRIBUTE_STRING(c_ot_name); +UAC2_ATTRIBUTE_STRING(c_fu_vol_name); UAC2_ATTRIBUTE(s16, p_terminal_type); UAC2_ATTRIBUTE(s16, c_terminal_type); + static struct configfs_attribute *f_uac2_attrs[] = { &f_uac2_opts_attr_p_chmask, &f_uac2_opts_attr_p_srate, @@ -2130,6 +2150,19 @@ static struct configfs_attribute *f_uac2_attrs[] = { &f_uac2_opts_attr_c_volume_res, &f_uac2_opts_attr_function_name, + &f_uac2_opts_attr_if_ctrl_name, + &f_uac2_opts_attr_clksrc_in_name, + &f_uac2_opts_attr_clksrc_out_name, + + &f_uac2_opts_attr_p_it_name, + &f_uac2_opts_attr_p_it_ch_name, + &f_uac2_opts_attr_p_ot_name, + &f_uac2_opts_attr_p_fu_vol_name, + + &f_uac2_opts_attr_c_it_name, + &f_uac2_opts_attr_c_it_ch_name, + &f_uac2_opts_attr_c_ot_name, + &f_uac2_opts_attr_c_fu_vol_name, &f_uac2_opts_attr_p_terminal_type, &f_uac2_opts_attr_c_terminal_type, @@ -2191,6 +2224,19 @@ static struct usb_function_instance *afunc_alloc_inst(void) opts->fb_max = FBACK_FAST_MAX; scnprintf(opts->function_name, sizeof(opts->function_name), "Source/Sink"); + scnprintf(opts->if_ctrl_name, sizeof(opts->if_ctrl_name), "Topology Control"); + scnprintf(opts->clksrc_in_name, sizeof(opts->clksrc_in_name), "Input Clock"); + scnprintf(opts->clksrc_out_name, sizeof(opts->clksrc_out_name), "Output Clock"); + + scnprintf(opts->p_it_name, sizeof(opts->p_it_name), "USBD Out"); + scnprintf(opts->p_it_ch_name, sizeof(opts->p_it_ch_name), "Capture Channels"); + scnprintf(opts->p_ot_name, sizeof(opts->p_ot_name), "USBH In"); + scnprintf(opts->p_fu_vol_name, sizeof(opts->p_fu_vol_name), "Capture Volume"); + + scnprintf(opts->c_it_name, sizeof(opts->c_it_name), "USBH Out"); + scnprintf(opts->c_it_ch_name, sizeof(opts->c_it_ch_name), "Playback Channels"); + scnprintf(opts->c_ot_name, sizeof(opts->c_ot_name), "USBD In"); + scnprintf(opts->c_fu_vol_name, sizeof(opts->c_fu_vol_name), "Playback Volume"); opts->p_terminal_type = UAC2_DEF_P_TERM_TYPE; opts->c_terminal_type = UAC2_DEF_C_TERM_TYPE; diff --git a/drivers/usb/gadget/function/u_uac2.h b/drivers/usb/gadget/function/u_uac2.h index 5e81bdd6c5fb..0df808289ded 100644 --- a/drivers/usb/gadget/function/u_uac2.h +++ b/drivers/usb/gadget/function/u_uac2.h @@ -68,7 +68,20 @@ struct f_uac2_opts { int fb_max; bool bound; - char function_name[32]; + char function_name[USB_MAX_STRING_LEN]; + char if_ctrl_name[USB_MAX_STRING_LEN]; + char clksrc_in_name[USB_MAX_STRING_LEN]; + char clksrc_out_name[USB_MAX_STRING_LEN]; + + char p_it_name[USB_MAX_STRING_LEN]; + char p_it_ch_name[USB_MAX_STRING_LEN]; + char p_ot_name[USB_MAX_STRING_LEN]; + char p_fu_vol_name[USB_MAX_STRING_LEN]; + + char c_it_name[USB_MAX_STRING_LEN]; + char c_it_ch_name[USB_MAX_STRING_LEN]; + char c_ot_name[USB_MAX_STRING_LEN]; + char c_fu_vol_name[USB_MAX_STRING_LEN]; s16 p_terminal_type; s16 c_terminal_type; From 5cffefa1c1ede3e90a9b09f964bfd5c5e82a1041 Mon Sep 17 00:00:00 2001 From: Valentina Fernandez Date: Tue, 6 Aug 2024 14:14:07 +0100 Subject: [PATCH 040/145] usb: musb: poll ID pin status in dual-role mode in mpfs glue layer Similar to other platforms using the MUSB driver, PolarFire SoC lacks an ID pin interrupt event, preventing several OTG-critical status change events from being exposed. We need to rely on polling to detect USB attach events for the dual-role port. The otg state machine implementation is based on Texas Instruments DA8xx/OMAP-L1x glue layer. This has been tested on BeagleV-Fire with couple of devices in host mode and with the Ethernet gadget driver in peripheral mode, in a wide variety of plug orders. Signed-off-by: Valentina Fernandez Link: https://lore.kernel.org/r/20240806131407.1542306-1-valentina.fernandezalanis@microchip.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/mpfs.c | 160 ++++++++++++++++++++++++++++++++++------ 1 file changed, 136 insertions(+), 24 deletions(-) diff --git a/drivers/usb/musb/mpfs.c b/drivers/usb/musb/mpfs.c index 29c7e5cdb230..00e13214aa76 100644 --- a/drivers/usb/musb/mpfs.c +++ b/drivers/usb/musb/mpfs.c @@ -49,30 +49,6 @@ static const struct musb_hdrc_config mpfs_musb_hdrc_config = { .ram_bits = MPFS_MUSB_RAM_BITS, }; -static irqreturn_t mpfs_musb_interrupt(int irq, void *__hci) -{ - unsigned long flags; - irqreturn_t ret = IRQ_NONE; - struct musb *musb = __hci; - - spin_lock_irqsave(&musb->lock, flags); - - musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB); - musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX); - musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX); - - if (musb->int_usb || musb->int_tx || musb->int_rx) { - musb_writeb(musb->mregs, MUSB_INTRUSB, musb->int_usb); - musb_writew(musb->mregs, MUSB_INTRTX, musb->int_tx); - musb_writew(musb->mregs, MUSB_INTRRX, musb->int_rx); - ret = musb_interrupt(musb); - } - - spin_unlock_irqrestore(&musb->lock, flags); - - return ret; -} - static void mpfs_musb_set_vbus(struct musb *musb, int is_on) { u8 devctl; @@ -111,6 +87,129 @@ static void mpfs_musb_set_vbus(struct musb *musb, int is_on) musb_readb(musb->mregs, MUSB_DEVCTL)); } +#define POLL_SECONDS 2 + +static void otg_timer(struct timer_list *t) +{ + struct musb *musb = from_timer(musb, t, dev_timer); + void __iomem *mregs = musb->mregs; + u8 devctl; + unsigned long flags; + + /* + * We poll because PolarFire SoC won't expose several OTG-critical + * status change events (from the transceiver) otherwise. + */ + devctl = musb_readb(mregs, MUSB_DEVCTL); + dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl, + usb_otg_state_string(musb->xceiv->otg->state)); + + spin_lock_irqsave(&musb->lock, flags); + switch (musb->xceiv->otg->state) { + case OTG_STATE_A_WAIT_BCON: + devctl &= ~MUSB_DEVCTL_SESSION; + musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); + + devctl = musb_readb(musb->mregs, MUSB_DEVCTL); + if (devctl & MUSB_DEVCTL_BDEVICE) { + musb->xceiv->otg->state = OTG_STATE_B_IDLE; + MUSB_DEV_MODE(musb); + mod_timer(&musb->dev_timer, jiffies + POLL_SECONDS * HZ); + } else { + musb->xceiv->otg->state = OTG_STATE_A_IDLE; + MUSB_HST_MODE(musb); + } + break; + case OTG_STATE_A_WAIT_VFALL: + if (devctl & MUSB_DEVCTL_VBUS) { + mod_timer(&musb->dev_timer, jiffies + POLL_SECONDS * HZ); + break; + } + musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE; + break; + case OTG_STATE_B_IDLE: + /* + * There's no ID-changed IRQ, so we have no good way to tell + * when to switch to the A-Default state machine (by setting + * the DEVCTL.Session bit). + * + * Workaround: whenever we're in B_IDLE, try setting the + * session flag every few seconds. If it works, ID was + * grounded and we're now in the A-Default state machine. + * + * NOTE: setting the session flag is _supposed_ to trigger + * SRP but clearly it doesn't. + */ + musb_writeb(mregs, MUSB_DEVCTL, devctl | MUSB_DEVCTL_SESSION); + devctl = musb_readb(mregs, MUSB_DEVCTL); + if (devctl & MUSB_DEVCTL_BDEVICE) + mod_timer(&musb->dev_timer, jiffies + POLL_SECONDS * HZ); + else + musb->xceiv->otg->state = OTG_STATE_A_IDLE; + break; + default: + break; + } + spin_unlock_irqrestore(&musb->lock, flags); +} + +static void __maybe_unused mpfs_musb_try_idle(struct musb *musb, unsigned long timeout) +{ + static unsigned long last_timer; + + if (timeout == 0) + timeout = jiffies + msecs_to_jiffies(3); + + /* Never idle if active, or when VBUS timeout is not set as host */ + if (musb->is_active || (musb->a_wait_bcon == 0 && + musb->xceiv->otg->state == OTG_STATE_A_WAIT_BCON)) { + dev_dbg(musb->controller, "%s active, deleting timer\n", + usb_otg_state_string(musb->xceiv->otg->state)); + del_timer(&musb->dev_timer); + last_timer = jiffies; + return; + } + + if (time_after(last_timer, timeout) && timer_pending(&musb->dev_timer)) { + dev_dbg(musb->controller, "Longer idle timer already pending, ignoring...\n"); + return; + } + last_timer = timeout; + + dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n", + usb_otg_state_string(musb->xceiv->otg->state), + jiffies_to_msecs(timeout - jiffies)); + mod_timer(&musb->dev_timer, timeout); +} + +static irqreturn_t mpfs_musb_interrupt(int irq, void *__hci) +{ + unsigned long flags; + irqreturn_t ret = IRQ_NONE; + struct musb *musb = __hci; + + spin_lock_irqsave(&musb->lock, flags); + + musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB); + musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX); + musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX); + + if (musb->int_usb || musb->int_tx || musb->int_rx) { + musb_writeb(musb->mregs, MUSB_INTRUSB, musb->int_usb); + musb_writew(musb->mregs, MUSB_INTRTX, musb->int_tx); + musb_writew(musb->mregs, MUSB_INTRRX, musb->int_rx); + ret = musb_interrupt(musb); + } + + /* Poll for ID change */ + if (musb->xceiv->otg->state == OTG_STATE_B_IDLE) + mod_timer(&musb->dev_timer, jiffies + POLL_SECONDS * HZ); + + spin_unlock_irqrestore(&musb->lock, flags); + + return ret; +} + static int mpfs_musb_init(struct musb *musb) { struct device *dev = musb->controller; @@ -121,6 +220,8 @@ static int mpfs_musb_init(struct musb *musb) return PTR_ERR(musb->xceiv); } + timer_setup(&musb->dev_timer, otg_timer, 0); + musb->dyn_fifo = true; musb->isr = mpfs_musb_interrupt; @@ -129,13 +230,24 @@ static int mpfs_musb_init(struct musb *musb) return 0; } +static int mpfs_musb_exit(struct musb *musb) +{ + del_timer_sync(&musb->dev_timer); + + return 0; +} + static const struct musb_platform_ops mpfs_ops = { .quirks = MUSB_DMA_INVENTRA, .init = mpfs_musb_init, + .exit = mpfs_musb_exit, .fifo_mode = 2, #ifdef CONFIG_USB_INVENTRA_DMA .dma_init = musbhs_dma_controller_create, .dma_exit = musbhs_dma_controller_destroy, +#endif +#ifndef CONFIG_USB_MUSB_HOST + .try_idle = mpfs_musb_try_idle, #endif .set_vbus = mpfs_musb_set_vbus }; From 88177cd4537faf927fe994db99b62d75f73cb1fe Mon Sep 17 00:00:00 2001 From: Zhang Zekun Date: Fri, 9 Aug 2024 16:27:11 +0800 Subject: [PATCH 041/145] usb: common: Use helper function for_each_node_with_property() for_each_node_with_property() can iterate through the device_node with a given property name, and we don't need to find the device_node in the while loop. Since of_device_is_available() will return false if the "controller" is NULL and break the while loop, there is no functional change with such conversion. Signed-off-by: Zhang Zekun Link: https://lore.kernel.org/r/20240809082711.99085-1-zhangzekun11@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/common/common.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c index 59b55d6cf490..84ec00b7966c 100644 --- a/drivers/usb/common/common.c +++ b/drivers/usb/common/common.c @@ -276,14 +276,13 @@ EXPORT_SYMBOL_GPL(usb_decode_interval); */ enum usb_dr_mode of_usb_get_dr_mode_by_phy(struct device_node *np, int arg0) { - struct device_node *controller = NULL; + struct device_node *controller; struct of_phandle_args args; const char *dr_mode; int index; int err; - do { - controller = of_find_node_with_property(controller, "phys"); + for_each_node_with_property(controller, "phys") { if (!of_device_is_available(controller)) continue; index = 0; @@ -306,7 +305,7 @@ enum usb_dr_mode of_usb_get_dr_mode_by_phy(struct device_node *np, int arg0) goto finish; index++; } while (args.np); - } while (controller); + } finish: err = of_property_read_string(controller, "dr_mode", &dr_mode); From c343e66ed009fdb6206787558130ccbd504ffc12 Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Sat, 10 Aug 2024 22:52:17 +0200 Subject: [PATCH 042/145] usb: gadget: configfs: Make check_user_usb_string() static "linux/usb/gadget_configfs.h" is only included in "drivers/usb/gadget/configfs.c", so there is no need to declare a function in the header file. it is only used in this .c file. It's better to have it static. Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/958cb49dca1bff4254a3492c018efbf3b01918b4.1723323107.git.christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/configfs.c | 2 +- include/linux/usb/gadget_configfs.h | 3 --- 2 files changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index 0e7c1e947c0a..e0bf2b2bfc01 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -12,7 +12,7 @@ #include "u_f.h" #include "u_os_desc.h" -int check_user_usb_string(const char *name, +static int check_user_usb_string(const char *name, struct usb_gadget_strings *stringtab_dev) { u16 num; diff --git a/include/linux/usb/gadget_configfs.h b/include/linux/usb/gadget_configfs.h index d61aebd68128..6a552dd4dec9 100644 --- a/include/linux/usb/gadget_configfs.h +++ b/include/linux/usb/gadget_configfs.h @@ -4,9 +4,6 @@ #include -int check_user_usb_string(const char *name, - struct usb_gadget_strings *stringtab_dev); - #define GS_STRINGS_W(__struct, __name) \ static ssize_t __struct##_##__name##_store(struct config_item *item, \ const char *page, size_t len) \ From d1e14e06810a96ef0cdabf572513594031d4dad6 Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Sat, 10 Aug 2024 23:05:46 +0200 Subject: [PATCH 043/145] usb: gadget: configfs: Constify struct config_item_type 'struct config_item_type' is not modified in this file. Apparently, these structures are only used with config_group_init_type_name() which takes a const struct config_item_type* as a 3rd argument. Constifying this structure moves some data to a read-only section, so increase overall security, especially when the structure holds some function pointers. On a x86_64, with allmodconfig: Before: ====== text data bss dec hex filename 40834 5112 64 46010 b3ba drivers/usb/gadget/configfs.o After: ===== text data bss dec hex filename 41218 4728 64 46010 b3ba drivers/usb/gadget/configfs.o Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/513223e97082e1bb758e36d55c175ec9ea34a71c.1723323896.git.christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/configfs.c | 8 ++++---- include/linux/usb/gadget_configfs.h | 4 ++-- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index e0bf2b2bfc01..5cba3e8d626c 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -902,7 +902,7 @@ static struct configfs_group_operations gadget_language_langid_group_ops = { .drop_item = gadget_language_string_drop, }; -static struct config_item_type gadget_language_type = { +static const struct config_item_type gadget_language_type = { .ct_item_ops = &gadget_language_langid_item_ops, .ct_group_ops = &gadget_language_langid_group_ops, .ct_attrs = gadget_language_langid_attrs, @@ -961,7 +961,7 @@ static struct configfs_group_operations gadget_language_group_ops = { .drop_item = &gadget_language_drop, }; -static struct config_item_type gadget_language_strings_type = { +static const struct config_item_type gadget_language_strings_type = { .ct_group_ops = &gadget_language_group_ops, .ct_owner = THIS_MODULE, }; @@ -1106,7 +1106,7 @@ static struct configfs_attribute *webusb_attrs[] = { NULL, }; -static struct config_item_type webusb_type = { +static const struct config_item_type webusb_type = { .ct_attrs = webusb_attrs, .ct_owner = THIS_MODULE, }; @@ -1263,7 +1263,7 @@ static struct configfs_item_operations os_desc_ops = { .drop_link = os_desc_unlink, }; -static struct config_item_type os_desc_type = { +static const struct config_item_type os_desc_type = { .ct_item_ops = &os_desc_ops, .ct_attrs = os_desc_attrs, .ct_owner = THIS_MODULE, diff --git a/include/linux/usb/gadget_configfs.h b/include/linux/usb/gadget_configfs.h index 6a552dd4dec9..6b5d6838f865 100644 --- a/include/linux/usb/gadget_configfs.h +++ b/include/linux/usb/gadget_configfs.h @@ -34,7 +34,7 @@ static struct configfs_item_operations struct_in##_langid_item_ops = { \ .release = struct_in##_attr_release, \ }; \ \ -static struct config_item_type struct_in##_langid_type = { \ +static const struct config_item_type struct_in##_langid_type = { \ .ct_item_ops = &struct_in##_langid_item_ops, \ .ct_attrs = struct_in##_langid_attrs, \ .ct_owner = THIS_MODULE, \ @@ -91,7 +91,7 @@ static struct configfs_group_operations struct_in##_strings_ops = { \ .drop_item = &struct_in##_strings_drop, \ }; \ \ -static struct config_item_type struct_in##_strings_type = { \ +static const struct config_item_type struct_in##_strings_type = { \ .ct_group_ops = &struct_in##_strings_ops, \ .ct_owner = THIS_MODULE, \ } From c26cee817f8bd9a22bfade20f739ec2fc6f20221 Mon Sep 17 00:00:00 2001 From: David Sands Date: Sat, 10 Aug 2024 20:00:05 -0400 Subject: [PATCH 044/145] usb: gadget: f_fs: add capability for dfu functional descriptor Add the ability for the USB FunctionFS (FFS) gadget driver to be able to create Device Firmware Upgrade (DFU) functional descriptors. [1] This patch allows implementation of DFU in userspace using the FFS gadget. The DFU protocol uses the control pipe (ep0) for all messaging so only the addition of the DFU functional descriptor is needed in the kernel driver. The DFU functional descriptor is written to the ep0 file along with any other descriptors during FFS setup. DFU requires an interface descriptor followed by the DFU functional descriptor. This patch includes documentation of the added descriptor for DFU and conversion of some existing documentation to kernel-doc format so that it can be included in the generated docs. An implementation of DFU 1.1 that implements just the runtime descriptor using the FunctionFS gadget (with rebooting into u-boot for DFU mode) has been tested on an i.MX8 Nano. An implementation of DFU 1.1 that implements both runtime and DFU mode using the FunctionFS gadget has been tested on Xilinx Zynq UltraScale+. Note that for the best performance of firmware update file transfers, the userspace program should respond as quick as possible to the setup packets. [1] https://www.usb.org/sites/default/files/DFU_1.1.pdf Signed-off-by: David Sands Co-developed-by: Chris Wulff Signed-off-by: Chris Wulff Link: https://lore.kernel.org/r/20240811000004.1395888-2-crwulff@gmail.com Signed-off-by: Greg Kroah-Hartman --- Documentation/usb/functionfs-desc.rst | 39 +++++++++++ Documentation/usb/functionfs.rst | 2 + Documentation/usb/index.rst | 1 + drivers/usb/gadget/function/f_fs.c | 12 +++- include/uapi/linux/usb/ch9.h | 8 ++- include/uapi/linux/usb/functionfs.h | 97 ++++++++++++++++++++++++--- 6 files changed, 147 insertions(+), 12 deletions(-) create mode 100644 Documentation/usb/functionfs-desc.rst diff --git a/Documentation/usb/functionfs-desc.rst b/Documentation/usb/functionfs-desc.rst new file mode 100644 index 000000000000..39649774da54 --- /dev/null +++ b/Documentation/usb/functionfs-desc.rst @@ -0,0 +1,39 @@ +====================== +FunctionFS Descriptors +====================== + +Some of the descriptors that can be written to the FFS gadget are +described below. Device and configuration descriptors are handled +by the composite gadget and are not written by the user to the +FFS gadget. + +Descriptors are written to the "ep0" file in the FFS gadget +following the descriptor header. + +.. kernel-doc:: include/uapi/linux/usb/functionfs.h + :doc: descriptors + +Interface Descriptors +--------------------- + +Standard USB interface descriptors may be written. The class/subclass of the +most recent interface descriptor determines what type of class-specific +descriptors are accepted. + +Class-Specific Descriptors +-------------------------- + +Class-specific descriptors are accepted only for the class/subclass of the +most recent interface descriptor. The following are some of the +class-specific descriptors that are supported. + +DFU Functional Descriptor +~~~~~~~~~~~~~~~~~~~~~~~~~ + +When the interface class is USB_CLASS_APP_SPEC and the interface subclass +is USB_SUBCLASS_DFU, a DFU functional descriptor can be provided. +The DFU functional descriptor is a described in the USB specification for +Device Firmware Upgrade (DFU), version 1.1 as of this writing. + +.. kernel-doc:: include/uapi/linux/usb/functionfs.h + :doc: usb_dfu_functional_descriptor diff --git a/Documentation/usb/functionfs.rst b/Documentation/usb/functionfs.rst index d05a775bc45b..f7487b0d8057 100644 --- a/Documentation/usb/functionfs.rst +++ b/Documentation/usb/functionfs.rst @@ -25,6 +25,8 @@ interface numbers starting from zero). The FunctionFS changes them as needed also handling situation when numbers differ in different configurations. +For more information about FunctionFS descriptors see :doc:`functionfs-desc` + When descriptors and strings are written "ep#" files appear (one for each declared endpoint) which handle communication on a single endpoint. Again, FunctionFS takes care of the real diff --git a/Documentation/usb/index.rst b/Documentation/usb/index.rst index 27955dad95e1..826492c813ac 100644 --- a/Documentation/usb/index.rst +++ b/Documentation/usb/index.rst @@ -11,6 +11,7 @@ USB support dwc3 ehci functionfs + functionfs-desc gadget_configfs gadget_hid gadget_multi diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index e0ceaa721949..e35177fc6c55 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -2478,7 +2478,7 @@ typedef int (*ffs_os_desc_callback)(enum ffs_os_desc_type entity, static int __must_check ffs_do_single_desc(char *data, unsigned len, ffs_entity_callback entity, - void *priv, int *current_class) + void *priv, int *current_class, int *current_subclass) { struct usb_descriptor_header *_ds = (void *)data; u8 length; @@ -2535,6 +2535,7 @@ static int __must_check ffs_do_single_desc(char *data, unsigned len, if (ds->iInterface) __entity(STRING, ds->iInterface); *current_class = ds->bInterfaceClass; + *current_subclass = ds->bInterfaceSubClass; } break; @@ -2559,6 +2560,12 @@ static int __must_check ffs_do_single_desc(char *data, unsigned len, if (length != sizeof(struct ccid_descriptor)) goto inv_length; break; + } else if (*current_class == USB_CLASS_APP_SPEC && + *current_subclass == USB_SUBCLASS_DFU) { + pr_vdebug("dfu functional descriptor\n"); + if (length != sizeof(struct usb_dfu_functional_descriptor)) + goto inv_length; + break; } else { pr_vdebug("unknown descriptor: %d for class %d\n", _ds->bDescriptorType, *current_class); @@ -2621,6 +2628,7 @@ static int __must_check ffs_do_descs(unsigned count, char *data, unsigned len, const unsigned _len = len; unsigned long num = 0; int current_class = -1; + int current_subclass = -1; for (;;) { int ret; @@ -2640,7 +2648,7 @@ static int __must_check ffs_do_descs(unsigned count, char *data, unsigned len, return _len - len; ret = ffs_do_single_desc(data, len, entity, priv, - ¤t_class); + ¤t_class, ¤t_subclass); if (ret < 0) { pr_debug("%s returns %d\n", __func__, ret); return ret; diff --git a/include/uapi/linux/usb/ch9.h b/include/uapi/linux/usb/ch9.h index 44d73ba8788d..91f0f7e214a5 100644 --- a/include/uapi/linux/usb/ch9.h +++ b/include/uapi/linux/usb/ch9.h @@ -254,6 +254,9 @@ struct usb_ctrlrequest { #define USB_DT_DEVICE_CAPABILITY 0x10 #define USB_DT_WIRELESS_ENDPOINT_COMP 0x11 #define USB_DT_WIRE_ADAPTER 0x21 +/* From USB Device Firmware Upgrade Specification, Revision 1.1 */ +#define USB_DT_DFU_FUNCTIONAL 0x21 +/* these are from the Wireless USB spec */ #define USB_DT_RPIPE 0x22 #define USB_DT_CS_RADIO_CONTROL 0x23 /* From the T10 UAS specification */ @@ -329,9 +332,10 @@ struct usb_device_descriptor { #define USB_CLASS_USB_TYPE_C_BRIDGE 0x12 #define USB_CLASS_MISC 0xef #define USB_CLASS_APP_SPEC 0xfe -#define USB_CLASS_VENDOR_SPEC 0xff +#define USB_SUBCLASS_DFU 0x01 -#define USB_SUBCLASS_VENDOR_SPEC 0xff +#define USB_CLASS_VENDOR_SPEC 0xff +#define USB_SUBCLASS_VENDOR_SPEC 0xff /*-------------------------------------------------------------------------*/ diff --git a/include/uapi/linux/usb/functionfs.h b/include/uapi/linux/usb/functionfs.h index 9f88de9c3d66..2ebdba111a8f 100644 --- a/include/uapi/linux/usb/functionfs.h +++ b/include/uapi/linux/usb/functionfs.h @@ -3,6 +3,7 @@ #define _UAPI__LINUX_FUNCTIONFS_H__ +#include #include #include @@ -37,6 +38,31 @@ struct usb_endpoint_descriptor_no_audio { __u8 bInterval; } __attribute__((packed)); +/** + * struct usb_dfu_functional_descriptor - DFU Functional descriptor + * @bLength: Size of the descriptor (bytes) + * @bDescriptorType: USB_DT_DFU_FUNCTIONAL + * @bmAttributes: DFU attributes + * @wDetachTimeOut: Maximum time to wait after DFU_DETACH (ms, le16) + * @wTransferSize: Maximum number of bytes per control-write (le16) + * @bcdDFUVersion: DFU Spec version (BCD, le16) + */ +struct usb_dfu_functional_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bmAttributes; + __le16 wDetachTimeOut; + __le16 wTransferSize; + __le16 bcdDFUVersion; +} __attribute__ ((packed)); + +/* from DFU functional descriptor bmAttributes */ +#define DFU_FUNC_ATT_CAN_DOWNLOAD _BITUL(0) +#define DFU_FUNC_ATT_CAN_UPLOAD _BITUL(1) +#define DFU_FUNC_ATT_MANIFEST_TOLERANT _BITUL(2) +#define DFU_FUNC_ATT_WILL_DETACH _BITUL(3) + + struct usb_functionfs_descs_head_v2 { __le32 magic; __le32 length; @@ -104,23 +130,38 @@ struct usb_ffs_dmabuf_transfer_req { #ifndef __KERNEL__ -/* +/** + * DOC: descriptors + * * Descriptors format: * + * +-----+-----------+--------------+--------------------------------------+ * | off | name | type | description | - * |-----+-----------+--------------+--------------------------------------| + * +-----+-----------+--------------+--------------------------------------+ * | 0 | magic | LE32 | FUNCTIONFS_DESCRIPTORS_MAGIC_V2 | + * +-----+-----------+--------------+--------------------------------------+ * | 4 | length | LE32 | length of the whole data chunk | + * +-----+-----------+--------------+--------------------------------------+ * | 8 | flags | LE32 | combination of functionfs_flags | + * +-----+-----------+--------------+--------------------------------------+ * | | eventfd | LE32 | eventfd file descriptor | + * +-----+-----------+--------------+--------------------------------------+ * | | fs_count | LE32 | number of full-speed descriptors | + * +-----+-----------+--------------+--------------------------------------+ * | | hs_count | LE32 | number of high-speed descriptors | + * +-----+-----------+--------------+--------------------------------------+ * | | ss_count | LE32 | number of super-speed descriptors | + * +-----+-----------+--------------+--------------------------------------+ * | | os_count | LE32 | number of MS OS descriptors | + * +-----+-----------+--------------+--------------------------------------+ * | | fs_descrs | Descriptor[] | list of full-speed descriptors | + * +-----+-----------+--------------+--------------------------------------+ * | | hs_descrs | Descriptor[] | list of high-speed descriptors | + * +-----+-----------+--------------+--------------------------------------+ * | | ss_descrs | Descriptor[] | list of super-speed descriptors | + * +-----+-----------+--------------+--------------------------------------+ * | | os_descrs | OSDesc[] | list of MS OS descriptors | + * +-----+-----------+--------------+--------------------------------------+ * * Depending on which flags are set, various fields may be missing in the * structure. Any flags that are not recognised cause the whole block to be @@ -128,71 +169,111 @@ struct usb_ffs_dmabuf_transfer_req { * * Legacy descriptors format (deprecated as of 3.14): * + * +-----+-----------+--------------+--------------------------------------+ * | off | name | type | description | - * |-----+-----------+--------------+--------------------------------------| + * +-----+-----------+--------------+--------------------------------------+ * | 0 | magic | LE32 | FUNCTIONFS_DESCRIPTORS_MAGIC | + * +-----+-----------+--------------+--------------------------------------+ * | 4 | length | LE32 | length of the whole data chunk | + * +-----+-----------+--------------+--------------------------------------+ * | 8 | fs_count | LE32 | number of full-speed descriptors | + * +-----+-----------+--------------+--------------------------------------+ * | 12 | hs_count | LE32 | number of high-speed descriptors | + * +-----+-----------+--------------+--------------------------------------+ * | 16 | fs_descrs | Descriptor[] | list of full-speed descriptors | + * +-----+-----------+--------------+--------------------------------------+ * | | hs_descrs | Descriptor[] | list of high-speed descriptors | + * +-----+-----------+--------------+--------------------------------------+ * * All numbers must be in little endian order. * * Descriptor[] is an array of valid USB descriptors which have the following * format: * + * +-----+-----------------+------+--------------------------+ * | off | name | type | description | - * |-----+-----------------+------+--------------------------| + * +-----+-----------------+------+--------------------------+ * | 0 | bLength | U8 | length of the descriptor | + * +-----+-----------------+------+--------------------------+ * | 1 | bDescriptorType | U8 | descriptor type | + * +-----+-----------------+------+--------------------------+ * | 2 | payload | | descriptor's payload | + * +-----+-----------------+------+--------------------------+ * * OSDesc[] is an array of valid MS OS Feature Descriptors which have one of * the following formats: * + * +-----+-----------------+------+--------------------------+ * | off | name | type | description | - * |-----+-----------------+------+--------------------------| + * +-----+-----------------+------+--------------------------+ * | 0 | inteface | U8 | related interface number | + * +-----+-----------------+------+--------------------------+ * | 1 | dwLength | U32 | length of the descriptor | + * +-----+-----------------+------+--------------------------+ * | 5 | bcdVersion | U16 | currently supported: 1 | + * +-----+-----------------+------+--------------------------+ * | 7 | wIndex | U16 | currently supported: 4 | + * +-----+-----------------+------+--------------------------+ * | 9 | bCount | U8 | number of ext. compat. | + * +-----+-----------------+------+--------------------------+ * | 10 | Reserved | U8 | 0 | + * +-----+-----------------+------+--------------------------+ * | 11 | ExtCompat[] | | list of ext. compat. d. | + * +-----+-----------------+------+--------------------------+ * + * +-----+-----------------+------+--------------------------+ * | off | name | type | description | - * |-----+-----------------+------+--------------------------| + * +-----+-----------------+------+--------------------------+ * | 0 | inteface | U8 | related interface number | + * +-----+-----------------+------+--------------------------+ * | 1 | dwLength | U32 | length of the descriptor | + * +-----+-----------------+------+--------------------------+ * | 5 | bcdVersion | U16 | currently supported: 1 | + * +-----+-----------------+------+--------------------------+ * | 7 | wIndex | U16 | currently supported: 5 | + * +-----+-----------------+------+--------------------------+ * | 9 | wCount | U16 | number of ext. compat. | + * +-----+-----------------+------+--------------------------+ * | 11 | ExtProp[] | | list of ext. prop. d. | + * +-----+-----------------+------+--------------------------+ * * ExtCompat[] is an array of valid Extended Compatiblity descriptors * which have the following format: * + * +-----+-----------------------+------+-------------------------------------+ * | off | name | type | description | - * |-----+-----------------------+------+-------------------------------------| + * +-----+-----------------------+------+-------------------------------------+ * | 0 | bFirstInterfaceNumber | U8 | index of the interface or of the 1st| + * +-----+-----------------------+------+-------------------------------------+ * | | | | interface in an IAD group | + * +-----+-----------------------+------+-------------------------------------+ * | 1 | Reserved | U8 | 1 | + * +-----+-----------------------+------+-------------------------------------+ * | 2 | CompatibleID | U8[8]| compatible ID string | + * +-----+-----------------------+------+-------------------------------------+ * | 10 | SubCompatibleID | U8[8]| subcompatible ID string | + * +-----+-----------------------+------+-------------------------------------+ * | 18 | Reserved | U8[6]| 0 | + * +-----+-----------------------+------+-------------------------------------+ * * ExtProp[] is an array of valid Extended Properties descriptors * which have the following format: * + * +-----+-----------------------+------+-------------------------------------+ * | off | name | type | description | - * |-----+-----------------------+------+-------------------------------------| + * +-----+-----------------------+------+-------------------------------------+ * | 0 | dwSize | U32 | length of the descriptor | + * +-----+-----------------------+------+-------------------------------------+ * | 4 | dwPropertyDataType | U32 | 1..7 | + * +-----+-----------------------+------+-------------------------------------+ * | 8 | wPropertyNameLength | U16 | bPropertyName length (NL) | + * +-----+-----------------------+------+-------------------------------------+ * | 10 | bPropertyName |U8[NL]| name of this property | + * +-----+-----------------------+------+-------------------------------------+ * |10+NL| dwPropertyDataLength | U32 | bPropertyData length (DL) | + * +-----+-----------------------+------+-------------------------------------+ * |14+NL| bProperty |U8[DL]| payload of this property | + * +-----+-----------------------+------+-------------------------------------+ */ struct usb_functionfs_strings_head { From 82313624b2ae5a943d16475a566b65c873989e9f Mon Sep 17 00:00:00 2001 From: Chris Wulff Date: Sat, 3 Aug 2024 20:29:13 -0400 Subject: [PATCH 045/145] usb: gadget: f_uac1: Change volume name and remove alt names This changes the UAPI to align with disussion of alt settings work. fu_name is renamed to fu_vol_name, and alt settings mode names are removed for now in favor of future work where they will be settable in subdirectories for each alt mode. discussion thread for api changes for alt mode settings: https://lore.kernel.org/linux-usb/35be4668-58d3-894a-72cf-de1afaacae45@ivitera.com/T/ Signed-off-by: Chris Wulff Link: https://lore.kernel.org/r/20240804002912.3293177-2-crwulff@gmail.com Signed-off-by: Greg Kroah-Hartman --- .../ABI/testing/configfs-usb-gadget-uac1 | 8 +-- Documentation/usb/gadget-testing.rst | 8 +-- drivers/usb/gadget/function/f_uac1.c | 60 ++++++++----------- drivers/usb/gadget/function/u_uac1.h | 8 +-- 4 files changed, 30 insertions(+), 54 deletions(-) diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uac1 b/Documentation/ABI/testing/configfs-usb-gadget-uac1 index cf93b98b274d..64188a85592b 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-uac1 +++ b/Documentation/ABI/testing/configfs-usb-gadget-uac1 @@ -33,13 +33,9 @@ Description: p_it_name playback input terminal name p_it_ch_name playback channels name p_ot_name playback output terminal name - p_fu_name playback functional unit name - p_alt0_name playback alt mode 0 name - p_alt1_name playback alt mode 1 name + p_fu_vol_name playback mute/volume functional unit name c_it_name capture input terminal name c_it_ch_name capture channels name c_ot_name capture output terminal name - c_fu_name capture functional unit name - c_alt0_name capture alt mode 0 name - c_alt1_name capture alt mode 1 name + c_fu_vol_name capture mute/volume functional unit name ===================== ======================================= diff --git a/Documentation/usb/gadget-testing.rst b/Documentation/usb/gadget-testing.rst index 8092e250ec27..bf555c2270f5 100644 --- a/Documentation/usb/gadget-testing.rst +++ b/Documentation/usb/gadget-testing.rst @@ -971,15 +971,11 @@ The uac1 function provides these attributes in its function directory: p_it_name playback input terminal name p_it_ch_name playback channels name p_ot_name playback output terminal name - p_fu_name playback functional unit name - p_alt0_name playback alt mode 0 name - p_alt1_name playback alt mode 1 name + p_fu_vol_name playback mute/volume functional unit name c_it_name capture input terminal name c_it_ch_name capture channels name c_ot_name capture output terminal name - c_fu_name capture functional unit name - c_alt0_name capture alt mode 0 name - c_alt1_name capture alt mode 1 name + c_fu_vol_name capture mute/volume functional unit name ================ ==================================================== The attributes have sane default values. diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c index 06a220fb7a87..c87e74afc881 100644 --- a/drivers/usb/gadget/function/f_uac1.c +++ b/drivers/usb/gadget/function/f_uac1.c @@ -1251,19 +1251,19 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) strings_uac1[STR_AC_IF].s = audio_opts->function_name; - strings_uac1[STR_USB_OUT_IT].s = audio_opts->p_it_name; - strings_uac1[STR_USB_OUT_IT_CH_NAMES].s = audio_opts->p_it_ch_name; - strings_uac1[STR_IO_OUT_OT].s = audio_opts->p_ot_name; - strings_uac1[STR_FU_OUT].s = audio_opts->p_fu_name; - strings_uac1[STR_AS_OUT_IF_ALT0].s = audio_opts->p_alt0_name; - strings_uac1[STR_AS_OUT_IF_ALT1].s = audio_opts->p_alt1_name; + strings_uac1[STR_USB_OUT_IT].s = audio_opts->c_it_name; + strings_uac1[STR_USB_OUT_IT_CH_NAMES].s = audio_opts->c_it_ch_name; + strings_uac1[STR_IO_OUT_OT].s = audio_opts->c_ot_name; + strings_uac1[STR_FU_OUT].s = audio_opts->c_fu_vol_name; + strings_uac1[STR_AS_OUT_IF_ALT0].s = "Playback Inactive"; + strings_uac1[STR_AS_OUT_IF_ALT1].s = "Playback Active"; - strings_uac1[STR_IO_IN_IT].s = audio_opts->c_it_name; - strings_uac1[STR_IO_IN_IT_CH_NAMES].s = audio_opts->c_it_ch_name; - strings_uac1[STR_USB_IN_OT].s = audio_opts->c_ot_name; - strings_uac1[STR_FU_IN].s = audio_opts->c_fu_name; - strings_uac1[STR_AS_IN_IF_ALT0].s = audio_opts->c_alt0_name; - strings_uac1[STR_AS_IN_IF_ALT1].s = audio_opts->c_alt1_name; + strings_uac1[STR_IO_IN_IT].s = audio_opts->p_it_name; + strings_uac1[STR_IO_IN_IT_CH_NAMES].s = audio_opts->p_it_ch_name; + strings_uac1[STR_USB_IN_OT].s = audio_opts->p_ot_name; + strings_uac1[STR_FU_IN].s = audio_opts->p_fu_vol_name; + strings_uac1[STR_AS_IN_IF_ALT0].s = "Capture Inactive"; + strings_uac1[STR_AS_IN_IF_ALT1].s = "Capture Active"; us = usb_gstrings_attach(cdev, uac1_strings, ARRAY_SIZE(strings_uac1)); if (IS_ERR(us)) @@ -1687,16 +1687,12 @@ UAC1_ATTRIBUTE_STRING(function_name); UAC1_ATTRIBUTE_STRING(p_it_name); UAC1_ATTRIBUTE_STRING(p_it_ch_name); UAC1_ATTRIBUTE_STRING(p_ot_name); -UAC1_ATTRIBUTE_STRING(p_fu_name); -UAC1_ATTRIBUTE_STRING(p_alt0_name); -UAC1_ATTRIBUTE_STRING(p_alt1_name); +UAC1_ATTRIBUTE_STRING(p_fu_vol_name); UAC1_ATTRIBUTE_STRING(c_it_name); UAC1_ATTRIBUTE_STRING(c_it_ch_name); UAC1_ATTRIBUTE_STRING(c_ot_name); -UAC1_ATTRIBUTE_STRING(c_fu_name); -UAC1_ATTRIBUTE_STRING(c_alt0_name); -UAC1_ATTRIBUTE_STRING(c_alt1_name); +UAC1_ATTRIBUTE_STRING(c_fu_vol_name); static struct configfs_attribute *f_uac1_attrs[] = { &f_uac1_opts_attr_c_chmask, @@ -1724,16 +1720,12 @@ static struct configfs_attribute *f_uac1_attrs[] = { &f_uac1_opts_attr_p_it_name, &f_uac1_opts_attr_p_it_ch_name, &f_uac1_opts_attr_p_ot_name, - &f_uac1_opts_attr_p_fu_name, - &f_uac1_opts_attr_p_alt0_name, - &f_uac1_opts_attr_p_alt1_name, + &f_uac1_opts_attr_p_fu_vol_name, &f_uac1_opts_attr_c_it_name, &f_uac1_opts_attr_c_it_ch_name, &f_uac1_opts_attr_c_ot_name, - &f_uac1_opts_attr_c_fu_name, - &f_uac1_opts_attr_c_alt0_name, - &f_uac1_opts_attr_c_alt1_name, + &f_uac1_opts_attr_c_fu_vol_name, NULL, }; @@ -1789,19 +1781,15 @@ static struct usb_function_instance *f_audio_alloc_inst(void) scnprintf(opts->function_name, sizeof(opts->function_name), "AC Interface"); - scnprintf(opts->p_it_name, sizeof(opts->p_it_name), "Playback Input terminal"); - scnprintf(opts->p_it_ch_name, sizeof(opts->p_it_ch_name), "Playback Channels"); - scnprintf(opts->p_ot_name, sizeof(opts->p_ot_name), "Playback Output terminal"); - scnprintf(opts->p_fu_name, sizeof(opts->p_fu_name), "Playback Volume"); - scnprintf(opts->p_alt0_name, sizeof(opts->p_alt0_name), "Playback Inactive"); - scnprintf(opts->p_alt1_name, sizeof(opts->p_alt1_name), "Playback Active"); + scnprintf(opts->p_it_name, sizeof(opts->p_it_name), "Capture Input terminal"); + scnprintf(opts->p_it_ch_name, sizeof(opts->p_it_ch_name), "Capture Channels"); + scnprintf(opts->p_ot_name, sizeof(opts->p_ot_name), "Capture Output terminal"); + scnprintf(opts->p_fu_vol_name, sizeof(opts->p_fu_vol_name), "Capture Volume"); - scnprintf(opts->c_it_name, sizeof(opts->c_it_name), "Capture Input terminal"); - scnprintf(opts->c_it_ch_name, sizeof(opts->c_it_ch_name), "Capture Channels"); - scnprintf(opts->c_ot_name, sizeof(opts->c_ot_name), "Capture Output terminal"); - scnprintf(opts->c_fu_name, sizeof(opts->c_fu_name), "Capture Volume"); - scnprintf(opts->c_alt0_name, sizeof(opts->c_alt0_name), "Capture Inactive"); - scnprintf(opts->c_alt1_name, sizeof(opts->c_alt1_name), "Capture Active"); + scnprintf(opts->c_it_name, sizeof(opts->c_it_name), "Playback Input terminal"); + scnprintf(opts->c_it_ch_name, sizeof(opts->c_it_ch_name), "Playback Channels"); + scnprintf(opts->c_ot_name, sizeof(opts->c_ot_name), "Playback Output terminal"); + scnprintf(opts->c_fu_vol_name, sizeof(opts->c_fu_vol_name), "Playback Volume"); return &opts->func_inst; } diff --git a/drivers/usb/gadget/function/u_uac1.h b/drivers/usb/gadget/function/u_uac1.h index 67784de9782b..feb6eb76462f 100644 --- a/drivers/usb/gadget/function/u_uac1.h +++ b/drivers/usb/gadget/function/u_uac1.h @@ -57,16 +57,12 @@ struct f_uac1_opts { char p_it_name[USB_MAX_STRING_LEN]; char p_it_ch_name[USB_MAX_STRING_LEN]; char p_ot_name[USB_MAX_STRING_LEN]; - char p_fu_name[USB_MAX_STRING_LEN]; - char p_alt0_name[USB_MAX_STRING_LEN]; - char p_alt1_name[USB_MAX_STRING_LEN]; + char p_fu_vol_name[USB_MAX_STRING_LEN]; char c_it_name[USB_MAX_STRING_LEN]; char c_it_ch_name[USB_MAX_STRING_LEN]; char c_ot_name[USB_MAX_STRING_LEN]; - char c_fu_name[USB_MAX_STRING_LEN]; - char c_alt0_name[USB_MAX_STRING_LEN]; - char c_alt1_name[USB_MAX_STRING_LEN]; + char c_fu_vol_name[USB_MAX_STRING_LEN]; struct mutex lock; int refcnt; From 24edc397047180210ace0da60577b4a3e3d2af39 Mon Sep 17 00:00:00 2001 From: Aapo Vienamo Date: Fri, 19 Jul 2024 21:37:17 +0300 Subject: [PATCH 046/145] thunderbolt: Add missing usb4_port_sb_read() to usb4_port_sw_margin() Synchronize the operation completion by reading back the software margining operation completion metadata into margining->results. Signed-off-by: Aapo Vienamo Co-developed-by: R Kannappan Signed-off-by: R Kannappan Co-developed-by: Rene Sapiens Signed-off-by: Rene Sapiens Signed-off-by: Mika Westerberg --- drivers/thunderbolt/debugfs.c | 5 ++--- drivers/thunderbolt/tb.h | 2 +- drivers/thunderbolt/usb4.c | 13 ++++++++++--- 3 files changed, 13 insertions(+), 7 deletions(-) diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c index 9ed4bb2e8d05..a0d07887990e 100644 --- a/drivers/thunderbolt/debugfs.c +++ b/drivers/thunderbolt/debugfs.c @@ -785,9 +785,8 @@ static int margining_run_write(void *data, u64 val) margining->time ? "time" : "voltage", dev_name(dev), margining->lanes); ret = usb4_port_sw_margin(port, margining->target, margining->index, - margining->lanes, margining->time, - margining->right_high, - USB4_MARGIN_SW_COUNTER_CLEAR); + margining->lanes, margining->time, margining->right_high, + USB4_MARGIN_SW_COUNTER_CLEAR, &margining->results[0]); if (ret) goto out_clx; diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index b47f7873c847..321db4076573 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -1360,7 +1360,7 @@ int usb4_port_hw_margin(struct tb_port *port, enum usb4_sb_target target, bool timing, bool right_high, u32 *results); int usb4_port_sw_margin(struct tb_port *port, enum usb4_sb_target target, u8 index, unsigned int lanes, bool timing, - bool right_high, u32 counter); + bool right_high, u32 counter, u32 *results); int usb4_port_sw_margin_errors(struct tb_port *port, enum usb4_sb_target target, u8 index, u32 *errors); diff --git a/drivers/thunderbolt/usb4.c b/drivers/thunderbolt/usb4.c index 4d83b65afb5b..5505aa95c2ea 100644 --- a/drivers/thunderbolt/usb4.c +++ b/drivers/thunderbolt/usb4.c @@ -1703,6 +1703,7 @@ int usb4_port_hw_margin(struct tb_port *port, enum usb4_sb_target target, * @timing: Perform timing margining instead of voltage * @right_high: Use Right/high margin instead of left/low * @counter: What to do with the error counter + * @results: Data word for the operation completion data * * Runs software lane margining on USB4 port. Read back the error * counters by calling usb4_port_sw_margin_errors(). Returns %0 in @@ -1710,7 +1711,7 @@ int usb4_port_hw_margin(struct tb_port *port, enum usb4_sb_target target, */ int usb4_port_sw_margin(struct tb_port *port, enum usb4_sb_target target, u8 index, unsigned int lanes, bool timing, - bool right_high, u32 counter) + bool right_high, u32 counter, u32 *results) { u32 val; int ret; @@ -1728,8 +1729,14 @@ int usb4_port_sw_margin(struct tb_port *port, enum usb4_sb_target target, if (ret) return ret; - return usb4_port_sb_op(port, target, index, - USB4_SB_OPCODE_RUN_SW_LANE_MARGINING, 2500); + ret = usb4_port_sb_op(port, target, index, + USB4_SB_OPCODE_RUN_SW_LANE_MARGINING, 2500); + if (ret) + return ret; + + return usb4_port_sb_read(port, target, index, USB4_SB_DATA, results, + sizeof(*results)); + } /** From 81f848d28787b1f98f0526345c8f45f6dc1baf9e Mon Sep 17 00:00:00 2001 From: Rene Sapiens Date: Fri, 19 Jul 2024 21:37:18 +0300 Subject: [PATCH 047/145] thunderbolt: Consolidate margining parameters into a structure Consolidate the hardware and software margining parameters into a single structure to reduce the number of parameters passed to the margining functions. Signed-off-by: Rene Sapiens Co-developed-by: Aapo Vienamo Signed-off-by: Aapo Vienamo Signed-off-by: Mika Westerberg --- drivers/thunderbolt/debugfs.c | 32 +++++++++++++++++------- drivers/thunderbolt/sb_regs.h | 5 ---- drivers/thunderbolt/tb.h | 38 ++++++++++++++++++++++++++--- drivers/thunderbolt/usb4.c | 46 ++++++++++++++++------------------- 4 files changed, 78 insertions(+), 43 deletions(-) diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c index a0d07887990e..5d1588baea6a 100644 --- a/drivers/thunderbolt/debugfs.c +++ b/drivers/thunderbolt/debugfs.c @@ -780,13 +780,20 @@ static int margining_run_write(void *data, u64 val) } if (margining->software) { + struct usb4_port_margining_params params = { + .error_counter = USB4_MARGIN_SW_ERROR_COUNTER_CLEAR, + .lanes = margining->lanes, + .time = margining->time, + .right_high = margining->right_high, + }; + tb_port_dbg(port, "running software %s lane margining for %s lanes %u\n", margining->time ? "time" : "voltage", dev_name(dev), margining->lanes); - ret = usb4_port_sw_margin(port, margining->target, margining->index, - margining->lanes, margining->time, margining->right_high, - USB4_MARGIN_SW_COUNTER_CLEAR, &margining->results[0]); + + ret = usb4_port_sw_margin(port, margining->target, margining->index, ¶ms, + &margining->results[0]); if (ret) goto out_clx; @@ -794,16 +801,23 @@ static int margining_run_write(void *data, u64 val) margining->index, &margining->results[0]); } else { + struct usb4_port_margining_params params = { + .ber_level = margining->ber_level, + .lanes = margining->lanes, + .time = margining->time, + .right_high = margining->right_high, + }; + + /* Clear the results */ + margining->results[0] = 0; + margining->results[1] = 0; + tb_port_dbg(port, "running hardware %s lane margining for %s lanes %u\n", margining->time ? "time" : "voltage", dev_name(dev), margining->lanes); - /* Clear the results */ - margining->results[0] = 0; - margining->results[1] = 0; - ret = usb4_port_hw_margin(port, margining->target, margining->index, - margining->lanes, margining->ber_level, - margining->time, margining->right_high, + + ret = usb4_port_hw_margin(port, margining->target, margining->index, ¶ms, margining->results); } diff --git a/drivers/thunderbolt/sb_regs.h b/drivers/thunderbolt/sb_regs.h index 2a88edfc97b2..86e80aa297f7 100644 --- a/drivers/thunderbolt/sb_regs.h +++ b/drivers/thunderbolt/sb_regs.h @@ -85,10 +85,5 @@ enum usb4_sb_opcode { #define USB4_MARGIN_SW_TIME BIT(3) #define USB4_MARGIN_SW_RH BIT(4) #define USB4_MARGIN_SW_COUNTER_MASK GENMASK(14, 13) -#define USB4_MARGIN_SW_COUNTER_SHIFT 13 -#define USB4_MARGIN_SW_COUNTER_NOP 0x0 -#define USB4_MARGIN_SW_COUNTER_CLEAR 0x1 -#define USB4_MARGIN_SW_COUNTER_START 0x2 -#define USB4_MARGIN_SW_COUNTER_STOP 0x3 #endif diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 321db4076573..89ea66f885a4 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -1353,14 +1353,44 @@ int usb4_port_sb_read(struct tb_port *port, enum usb4_sb_target target, u8 index int usb4_port_sb_write(struct tb_port *port, enum usb4_sb_target target, u8 index, u8 reg, const void *buf, u8 size); +/** + * enum usb4_margin_sw_error_counter - Software margining error counter operation + * @USB4_MARGIN_SW_ERROR_COUNTER_NOP: No change in counter setup + * @USB4_MARGIN_SW_ERROR_COUNTER_CLEAR: Set the error counter to 0, enable counter + * @USB4_MARGIN_SW_ERROR_COUNTER_START: Start counter, count from last value + * @USB4_MARGIN_SW_ERROR_COUNTER_STOP: Stop counter, do not clear value + */ +enum usb4_margin_sw_error_counter { + USB4_MARGIN_SW_ERROR_COUNTER_NOP, + USB4_MARGIN_SW_ERROR_COUNTER_CLEAR, + USB4_MARGIN_SW_ERROR_COUNTER_START, + USB4_MARGIN_SW_ERROR_COUNTER_STOP, +}; + +/** + * struct usb4_port_margining_params - USB4 margining parameters + * @error_counter: Error counter operation for software margining + * @ber_level: Current BER level contour value + * @lanes: %0, %1 or %7 (all) + * @right_high: %false if left/low margin test is performed, %true if right/high + * @time: %true if time margining is used instead of voltage + */ +struct usb4_port_margining_params { + enum usb4_margin_sw_error_counter error_counter; + u32 ber_level; + u32 lanes; + bool right_high; + bool time; +}; + int usb4_port_margining_caps(struct tb_port *port, enum usb4_sb_target target, u8 index, u32 *caps); int usb4_port_hw_margin(struct tb_port *port, enum usb4_sb_target target, - u8 index, unsigned int lanes, unsigned int ber_level, - bool timing, bool right_high, u32 *results); + u8 index, const struct usb4_port_margining_params *params, + u32 *results); int usb4_port_sw_margin(struct tb_port *port, enum usb4_sb_target target, - u8 index, unsigned int lanes, bool timing, - bool right_high, u32 counter, u32 *results); + u8 index, const struct usb4_port_margining_params *params, + u32 *results); int usb4_port_sw_margin_errors(struct tb_port *port, enum usb4_sb_target target, u8 index, u32 *errors); diff --git a/drivers/thunderbolt/usb4.c b/drivers/thunderbolt/usb4.c index 5505aa95c2ea..cb51cafcf20c 100644 --- a/drivers/thunderbolt/usb4.c +++ b/drivers/thunderbolt/usb4.c @@ -1653,31 +1653,29 @@ int usb4_port_margining_caps(struct tb_port *port, enum usb4_sb_target target, * @port: USB4 port * @target: Sideband target * @index: Retimer index if taget is %USB4_SB_TARGET_RETIMER - * @lanes: Which lanes to run (must match the port capabilities). Can be - * %0, %1 or %7. - * @ber_level: BER level contour value - * @timing: Perform timing margining instead of voltage - * @right_high: Use Right/high margin instead of left/low + * @params: Parameters for USB4 hardware margining * @results: Array with at least two elements to hold the results * * Runs hardware lane margining on USB4 port and returns the result in * @results. */ int usb4_port_hw_margin(struct tb_port *port, enum usb4_sb_target target, - u8 index, unsigned int lanes, unsigned int ber_level, - bool timing, bool right_high, u32 *results) + u8 index, const struct usb4_port_margining_params *params, + u32 *results) { u32 val; int ret; - val = lanes; - if (timing) + if (WARN_ON_ONCE(!params)) + return -EINVAL; + + val = params->lanes; + if (params->time) val |= USB4_MARGIN_HW_TIME; - if (right_high) + if (params->right_high) val |= USB4_MARGIN_HW_RH; - if (ber_level) - val |= (ber_level << USB4_MARGIN_HW_BER_SHIFT) & - USB4_MARGIN_HW_BER_MASK; + if (params->ber_level) + val |= FIELD_PREP(USB4_MARGIN_HW_BER_MASK, params->ber_level); ret = usb4_port_sb_write(port, target, index, USB4_SB_METADATA, &val, sizeof(val)); @@ -1698,11 +1696,7 @@ int usb4_port_hw_margin(struct tb_port *port, enum usb4_sb_target target, * @port: USB4 port * @target: Sideband target * @index: Retimer index if taget is %USB4_SB_TARGET_RETIMER - * @lanes: Which lanes to run (must match the port capabilities). Can be - * %0, %1 or %7. - * @timing: Perform timing margining instead of voltage - * @right_high: Use Right/high margin instead of left/low - * @counter: What to do with the error counter + * @params: Parameters for USB4 software margining * @results: Data word for the operation completion data * * Runs software lane margining on USB4 port. Read back the error @@ -1710,19 +1704,21 @@ int usb4_port_hw_margin(struct tb_port *port, enum usb4_sb_target target, * success and negative errno otherwise. */ int usb4_port_sw_margin(struct tb_port *port, enum usb4_sb_target target, - u8 index, unsigned int lanes, bool timing, - bool right_high, u32 counter, u32 *results) + u8 index, const struct usb4_port_margining_params *params, + u32 *results) { u32 val; int ret; - val = lanes; - if (timing) + if (WARN_ON_ONCE(!params)) + return -EINVAL; + + val = params->lanes; + if (params->time) val |= USB4_MARGIN_SW_TIME; - if (right_high) + if (params->right_high) val |= USB4_MARGIN_SW_RH; - val |= (counter << USB4_MARGIN_SW_COUNTER_SHIFT) & - USB4_MARGIN_SW_COUNTER_MASK; + val |= FIELD_PREP(USB4_MARGIN_SW_COUNTER_MASK, params->error_counter); ret = usb4_port_sb_write(port, target, index, USB4_SB_METADATA, &val, sizeof(val)); From 9fafd46b39d140b7359b77e5fcc4c3130788df42 Mon Sep 17 00:00:00 2001 From: Rene Sapiens Date: Fri, 19 Jul 2024 21:37:19 +0300 Subject: [PATCH 048/145] thunderbolt: Add optional voltage offset range for receiver lane margining Add optional extended voltage offset range support for software and hardware margining as defined by the USB4 specification. If supported, it can be enabled like below: # cd /sys/kernel/debug/thunderbolt/ROUTER/portX/margining/ # echo Y > optional_voltage_offset Signed-off-by: Rene Sapiens Co-developed-by: R Kannappan Signed-off-by: R Kannappan Co-developed-by: Aapo Vienamo Signed-off-by: Aapo Vienamo Signed-off-by: Mika Westerberg --- drivers/thunderbolt/debugfs.c | 74 +++++++++++++++++++++++++++++++++++ drivers/thunderbolt/sb_regs.h | 5 +++ drivers/thunderbolt/tb.h | 2 + drivers/thunderbolt/usb4.c | 4 ++ 4 files changed, 85 insertions(+) diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c index 5d1588baea6a..9defa69ef3a7 100644 --- a/drivers/thunderbolt/debugfs.c +++ b/drivers/thunderbolt/debugfs.c @@ -394,8 +394,12 @@ out: * @ber_level: Current BER level contour value * @voltage_steps: Number of mandatory voltage steps * @max_voltage_offset: Maximum mandatory voltage offset (in mV) + * @voltage_steps_optional_range: Number of voltage steps for optional range + * @max_voltage_offset_optional_range: Maximum voltage offset for the optional + * range (in mV). * @time_steps: Number of time margin steps * @max_time_offset: Maximum time margin offset (in mUI) + * @optional_voltage_offset_range: Enable optional extended voltage range * @software: %true if software margining is used instead of hardware * @time: %true if time margining is used instead of voltage * @right_high: %false if left/low margin test is performed, %true if @@ -414,8 +418,11 @@ struct tb_margining { unsigned int ber_level; unsigned int voltage_steps; unsigned int max_voltage_offset; + unsigned int voltage_steps_optional_range; + unsigned int max_voltage_offset_optional_range; unsigned int time_steps; unsigned int max_time_offset; + bool optional_voltage_offset_range; bool software; bool time; bool right_high; @@ -454,6 +461,12 @@ independent_time_margins(const struct tb_margining *margining) return FIELD_GET(USB4_MARGIN_CAP_1_TIME_INDP_MASK, margining->caps[1]); } +static bool +supports_optional_voltage_offset_range(const struct tb_margining *margining) +{ + return margining->caps[0] & USB4_MARGIN_CAP_0_OPT_VOLTAGE_SUPPORT; +} + static ssize_t margining_ber_level_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) @@ -553,6 +566,14 @@ static int margining_caps_show(struct seq_file *s, void *not_used) margining->voltage_steps); seq_printf(s, "# maximum voltage offset: %u mV\n", margining->max_voltage_offset); + seq_printf(s, "# optional voltage offset range support: %s\n", + str_yes_no(supports_optional_voltage_offset_range(margining))); + if (supports_optional_voltage_offset_range(margining)) { + seq_printf(s, "# voltage margin steps, optional range: %u\n", + margining->voltage_steps_optional_range); + seq_printf(s, "# maximum voltage offset, optional range: %u mV\n", + margining->max_voltage_offset_optional_range); + } switch (independent_voltage_margins(margining)) { case USB4_MARGIN_CAP_0_VOLTAGE_MIN: @@ -667,6 +688,42 @@ static int margining_lanes_show(struct seq_file *s, void *not_used) } DEBUGFS_ATTR_RW(margining_lanes); +static ssize_t +margining_optional_voltage_offset_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct seq_file *s = file->private_data; + struct tb_margining *margining = s->private; + struct tb *tb = margining->port->sw->tb; + bool val; + int ret; + + ret = kstrtobool_from_user(user_buf, count, &val); + if (ret) + return ret; + + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &tb->lock) { + margining->optional_voltage_offset_range = val; + } + + return count; +} + +static int margining_optional_voltage_offset_show(struct seq_file *s, + void *not_used) +{ + struct tb_margining *margining = s->private; + struct tb *tb = margining->port->sw->tb; + + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &tb->lock) { + seq_printf(s, "%u\n", margining->optional_voltage_offset_range); + } + + return 0; +} +DEBUGFS_ATTR_RW(margining_optional_voltage_offset); + static ssize_t margining_mode_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) @@ -785,6 +842,7 @@ static int margining_run_write(void *data, u64 val) .lanes = margining->lanes, .time = margining->time, .right_high = margining->right_high, + .optional_voltage_offset_range = margining->optional_voltage_offset_range, }; tb_port_dbg(port, @@ -806,6 +864,7 @@ static int margining_run_write(void *data, u64 val) .lanes = margining->lanes, .time = margining->time, .right_high = margining->right_high, + .optional_voltage_offset_range = margining->optional_voltage_offset_range, }; /* Clear the results */ @@ -865,6 +924,8 @@ static void voltage_margin_show(struct seq_file *s, if (val & USB4_MARGIN_HW_RES_1_EXCEEDS) seq_puts(s, " exceeds maximum"); seq_puts(s, "\n"); + if (margining->optional_voltage_offset_range) + seq_puts(s, " optional voltage offset range enabled\n"); } static void time_margin_show(struct seq_file *s, @@ -1104,6 +1165,15 @@ static struct tb_margining *margining_alloc(struct tb_port *port, val = FIELD_GET(USB4_MARGIN_CAP_0_MAX_VOLTAGE_OFFSET_MASK, margining->caps[0]); margining->max_voltage_offset = 74 + val * 2; + if (supports_optional_voltage_offset_range(margining)) { + val = FIELD_GET(USB4_MARGIN_CAP_0_VOLT_STEPS_OPT_MASK, + margining->caps[0]); + margining->voltage_steps_optional_range = val; + val = FIELD_GET(USB4_MARGIN_CAP_1_MAX_VOLT_OFS_OPT_MASK, + margining->caps[1]); + margining->max_voltage_offset_optional_range = 74 + val * 2; + } + if (supports_time(margining)) { val = FIELD_GET(USB4_MARGIN_CAP_1_TIME_STEPS_MASK, margining->caps[1]); margining->time_steps = val; @@ -1140,6 +1210,10 @@ static struct tb_margining *margining_alloc(struct tb_port *port, independent_time_margins(margining) == USB4_MARGIN_CAP_1_TIME_LR)) debugfs_create_file("margin", 0600, dir, margining, &margining_margin_fops); + + if (supports_optional_voltage_offset_range(margining)) + debugfs_create_file("optional_voltage_offset", DEBUGFS_MODE, dir, margining, + &margining_optional_voltage_offset_fops); return margining; } diff --git a/drivers/thunderbolt/sb_regs.h b/drivers/thunderbolt/sb_regs.h index 86e80aa297f7..8bff0740222c 100644 --- a/drivers/thunderbolt/sb_regs.h +++ b/drivers/thunderbolt/sb_regs.h @@ -57,6 +57,9 @@ enum usb4_sb_opcode { #define USB4_MARGIN_CAP_0_TIME BIT(5) #define USB4_MARGIN_CAP_0_VOLTAGE_STEPS_MASK GENMASK(12, 6) #define USB4_MARGIN_CAP_0_MAX_VOLTAGE_OFFSET_MASK GENMASK(18, 13) +#define USB4_MARGIN_CAP_0_OPT_VOLTAGE_SUPPORT BIT(19) +#define USB4_MARGIN_CAP_0_VOLT_STEPS_OPT_MASK GENMASK(26, 20) +#define USB4_MARGIN_CAP_1_MAX_VOLT_OFS_OPT_MASK GENMASK(7, 0) #define USB4_MARGIN_CAP_1_TIME_DESTR BIT(8) #define USB4_MARGIN_CAP_1_TIME_INDP_MASK GENMASK(10, 9) #define USB4_MARGIN_CAP_1_TIME_MIN 0x0 @@ -72,6 +75,7 @@ enum usb4_sb_opcode { #define USB4_MARGIN_HW_RH BIT(4) #define USB4_MARGIN_HW_BER_MASK GENMASK(9, 5) #define USB4_MARGIN_HW_BER_SHIFT 5 +#define USB4_MARGIN_HW_OPT_VOLTAGE BIT(10) /* Applicable to all margin values */ #define USB4_MARGIN_HW_RES_1_MARGIN_MASK GENMASK(6, 0) @@ -84,6 +88,7 @@ enum usb4_sb_opcode { /* USB4_SB_OPCODE_RUN_SW_LANE_MARGINING */ #define USB4_MARGIN_SW_TIME BIT(3) #define USB4_MARGIN_SW_RH BIT(4) +#define USB4_MARGIN_SW_OPT_VOLTAGE BIT(5) #define USB4_MARGIN_SW_COUNTER_MASK GENMASK(14, 13) #endif diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 89ea66f885a4..262c333924b8 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -1372,6 +1372,7 @@ enum usb4_margin_sw_error_counter { * @error_counter: Error counter operation for software margining * @ber_level: Current BER level contour value * @lanes: %0, %1 or %7 (all) + * @optional_voltage_offset_range: Enable optional extended voltage range * @right_high: %false if left/low margin test is performed, %true if right/high * @time: %true if time margining is used instead of voltage */ @@ -1379,6 +1380,7 @@ struct usb4_port_margining_params { enum usb4_margin_sw_error_counter error_counter; u32 ber_level; u32 lanes; + bool optional_voltage_offset_range; bool right_high; bool time; }; diff --git a/drivers/thunderbolt/usb4.c b/drivers/thunderbolt/usb4.c index cb51cafcf20c..a2f81e17ad8d 100644 --- a/drivers/thunderbolt/usb4.c +++ b/drivers/thunderbolt/usb4.c @@ -1676,6 +1676,8 @@ int usb4_port_hw_margin(struct tb_port *port, enum usb4_sb_target target, val |= USB4_MARGIN_HW_RH; if (params->ber_level) val |= FIELD_PREP(USB4_MARGIN_HW_BER_MASK, params->ber_level); + if (params->optional_voltage_offset_range) + val |= USB4_MARGIN_HW_OPT_VOLTAGE; ret = usb4_port_sb_write(port, target, index, USB4_SB_METADATA, &val, sizeof(val)); @@ -1716,6 +1718,8 @@ int usb4_port_sw_margin(struct tb_port *port, enum usb4_sb_target target, val = params->lanes; if (params->time) val |= USB4_MARGIN_SW_TIME; + if (params->optional_voltage_offset_range) + val |= USB4_MARGIN_SW_OPT_VOLTAGE; if (params->right_high) val |= USB4_MARGIN_SW_RH; val |= FIELD_PREP(USB4_MARGIN_SW_COUNTER_MASK, params->error_counter); From 10904df3f20cf36e418e78ab73c2fbcecda512b8 Mon Sep 17 00:00:00 2001 From: R Kannappan Date: Fri, 19 Jul 2024 21:37:20 +0300 Subject: [PATCH 049/145] thunderbolt: Improve software receiver lane margining USB4 specification defines the metadata needed to perform software margining, as well as the necessary steps which include waiting for dwell time. - Add dwell_time attribute to set the wait time while performing margining and checking for link errors. - Add error_counter attribute to configure error counter prior to margining test. - Add voltage_time_offset attribute to set the voltage or time offset steps before performing the software margining test. - Perform software margining test for dwell duration, break if there are link errors, stop the clocks and provide results. Below is a minimalistic example how this can be used. Note these values are just examples. The exact values in practice depend on host specific capabilities and the type of measurement to be performed. # cd /sys/kernel/debug/thunderbolt/ROUTER/portX/margining/ # echo software > mode # echo 400 > dwell_time # echo 1 > run As usual the results attribute contains the results of a succesfull run. Signed-off-by: R Kannappan Co-developed-by: Rene Sapiens Signed-off-by: Rene Sapiens Co-developed-by: Aapo Vienamo Signed-off-by: Aapo Vienamo Signed-off-by: Mika Westerberg --- drivers/thunderbolt/debugfs.c | 295 ++++++++++++++++++++++++++++++++-- drivers/thunderbolt/sb_regs.h | 8 + drivers/thunderbolt/tb.h | 2 + drivers/thunderbolt/usb4.c | 1 + 4 files changed, 290 insertions(+), 16 deletions(-) diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c index 9defa69ef3a7..350310bd0fee 100644 --- a/drivers/thunderbolt/debugfs.c +++ b/drivers/thunderbolt/debugfs.c @@ -9,6 +9,7 @@ #include #include +#include #include #include @@ -34,6 +35,14 @@ #define COUNTER_SET_LEN 3 +/* + * USB4 spec doesn't specify dwell range, the range of 100 ms to 500 ms + * probed to give good results. + */ +#define MIN_DWELL_TIME 100 /* ms */ +#define MAX_DWELL_TIME 500 /* ms */ +#define DWELL_SAMPLE_INTERVAL 10 + /* Sideband registers and their sizes as defined in the USB4 spec */ struct sb_reg { unsigned int reg; @@ -399,6 +408,9 @@ out: * range (in mV). * @time_steps: Number of time margin steps * @max_time_offset: Maximum time margin offset (in mUI) + * @voltage_time_offset: Offset for voltage / time for software margining + * @dwell_time: Dwell time for software margining (in ms) + * @error_counter: Error counter operation for software margining * @optional_voltage_offset_range: Enable optional extended voltage range * @software: %true if software margining is used instead of hardware * @time: %true if time margining is used instead of voltage @@ -422,12 +434,33 @@ struct tb_margining { unsigned int max_voltage_offset_optional_range; unsigned int time_steps; unsigned int max_time_offset; + unsigned int voltage_time_offset; + unsigned int dwell_time; + enum usb4_margin_sw_error_counter error_counter; bool optional_voltage_offset_range; bool software; bool time; bool right_high; }; +static int margining_modify_error_counter(struct tb_margining *margining, + u32 lanes, enum usb4_margin_sw_error_counter error_counter) +{ + struct usb4_port_margining_params params = { 0 }; + struct tb_port *port = margining->port; + u32 result; + + if (error_counter != USB4_MARGIN_SW_ERROR_COUNTER_CLEAR && + error_counter != USB4_MARGIN_SW_ERROR_COUNTER_STOP) + return -EOPNOTSUPP; + + params.error_counter = error_counter; + params.lanes = lanes; + + return usb4_port_sw_margin(port, margining->target, margining->index, + ¶ms, &result); +} + static bool supports_software(const struct tb_margining *margining) { return margining->caps[0] & USB4_MARGIN_CAP_0_MODES_SW; @@ -689,9 +722,165 @@ static int margining_lanes_show(struct seq_file *s, void *not_used) DEBUGFS_ATTR_RW(margining_lanes); static ssize_t -margining_optional_voltage_offset_write(struct file *file, - const char __user *user_buf, - size_t count, loff_t *ppos) +margining_voltage_time_offset_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct seq_file *s = file->private_data; + struct tb_margining *margining = s->private; + struct tb *tb = margining->port->sw->tb; + unsigned int max_margin; + unsigned int val; + int ret; + + ret = kstrtouint_from_user(user_buf, count, 10, &val); + if (ret) + return ret; + + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &tb->lock) { + if (!margining->software) + return -EOPNOTSUPP; + + if (margining->time) + max_margin = margining->time_steps; + else + if (margining->optional_voltage_offset_range) + max_margin = margining->voltage_steps_optional_range; + else + max_margin = margining->voltage_steps; + + margining->voltage_time_offset = clamp(val, 0, max_margin); + } + + return count; +} + +static int margining_voltage_time_offset_show(struct seq_file *s, + void *not_used) +{ + const struct tb_margining *margining = s->private; + struct tb *tb = margining->port->sw->tb; + + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &tb->lock) { + if (!margining->software) + return -EOPNOTSUPP; + + seq_printf(s, "%d\n", margining->voltage_time_offset); + } + + return 0; +} +DEBUGFS_ATTR_RW(margining_voltage_time_offset); + +static ssize_t +margining_error_counter_write(struct file *file, const char __user *user_buf, + size_t count, loff_t *ppos) +{ + enum usb4_margin_sw_error_counter error_counter; + struct seq_file *s = file->private_data; + struct tb_margining *margining = s->private; + struct tb *tb = margining->port->sw->tb; + char *buf; + + buf = validate_and_copy_from_user(user_buf, &count); + if (IS_ERR(buf)) + return PTR_ERR(buf); + + buf[count - 1] = '\0'; + + if (!strcmp(buf, "nop")) + error_counter = USB4_MARGIN_SW_ERROR_COUNTER_NOP; + else if (!strcmp(buf, "clear")) + error_counter = USB4_MARGIN_SW_ERROR_COUNTER_CLEAR; + else if (!strcmp(buf, "start")) + error_counter = USB4_MARGIN_SW_ERROR_COUNTER_START; + else if (!strcmp(buf, "stop")) + error_counter = USB4_MARGIN_SW_ERROR_COUNTER_STOP; + else + return -EINVAL; + + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &tb->lock) { + if (!margining->software) + return -EOPNOTSUPP; + + margining->error_counter = error_counter; + } + + return count; +} + +static int margining_error_counter_show(struct seq_file *s, void *not_used) +{ + const struct tb_margining *margining = s->private; + struct tb *tb = margining->port->sw->tb; + + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &tb->lock) { + if (!margining->software) + return -EOPNOTSUPP; + + switch (margining->error_counter) { + case USB4_MARGIN_SW_ERROR_COUNTER_NOP: + seq_puts(s, "[nop] clear start stop\n"); + break; + case USB4_MARGIN_SW_ERROR_COUNTER_CLEAR: + seq_puts(s, "nop [clear] start stop\n"); + break; + case USB4_MARGIN_SW_ERROR_COUNTER_START: + seq_puts(s, "nop clear [start] stop\n"); + break; + case USB4_MARGIN_SW_ERROR_COUNTER_STOP: + seq_puts(s, "nop clear start [stop]\n"); + break; + } + } + + return 0; +} +DEBUGFS_ATTR_RW(margining_error_counter); + +static ssize_t +margining_dwell_time_write(struct file *file, const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct seq_file *s = file->private_data; + struct tb_margining *margining = s->private; + struct tb *tb = margining->port->sw->tb; + unsigned int val; + int ret; + + ret = kstrtouint_from_user(user_buf, count, 10, &val); + if (ret) + return ret; + + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &tb->lock) { + if (!margining->software) + return -EOPNOTSUPP; + + margining->dwell_time = clamp(val, MIN_DWELL_TIME, MAX_DWELL_TIME); + } + + return count; +} + +static int margining_dwell_time_show(struct seq_file *s, void *not_used) +{ + struct tb_margining *margining = s->private; + struct tb *tb = margining->port->sw->tb; + + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &tb->lock) { + if (!margining->software) + return -EOPNOTSUPP; + + seq_printf(s, "%d\n", margining->dwell_time); + } + + return 0; +} +DEBUGFS_ATTR_RW(margining_dwell_time); + +static ssize_t +margining_optional_voltage_offset_write(struct file *file, const char __user *user_buf, + size_t count, loff_t *ppos) { struct seq_file *s = file->private_data; struct tb_margining *margining = s->private; @@ -796,6 +985,51 @@ static int margining_mode_show(struct seq_file *s, void *not_used) } DEBUGFS_ATTR_RW(margining_mode); +static int margining_run_sw(struct tb_margining *margining, + struct usb4_port_margining_params *params) +{ + u32 nsamples = margining->dwell_time / DWELL_SAMPLE_INTERVAL; + int ret, i; + + ret = usb4_port_sw_margin(margining->port, margining->target, margining->index, + params, margining->results); + if (ret) + goto out_stop; + + for (i = 0; i <= nsamples; i++) { + u32 errors = 0; + + ret = usb4_port_sw_margin_errors(margining->port, margining->target, + margining->index, &margining->results[1]); + if (ret) + break; + + if (margining->lanes == USB4_MARGIN_SW_LANE_0) + errors = FIELD_GET(USB4_MARGIN_SW_ERR_COUNTER_LANE_0_MASK, + margining->results[1]); + else if (margining->lanes == USB4_MARGIN_SW_LANE_1) + errors = FIELD_GET(USB4_MARGIN_SW_ERR_COUNTER_LANE_1_MASK, + margining->results[1]); + else if (margining->lanes == USB4_MARGIN_SW_ALL_LANES) + errors = margining->results[1]; + + /* Any errors stop the test */ + if (errors) + break; + + fsleep(DWELL_SAMPLE_INTERVAL * USEC_PER_MSEC); + } + +out_stop: + /* + * Stop the counters but don't clear them to allow the + * different error counter configurations. + */ + margining_modify_error_counter(margining, margining->lanes, + USB4_MARGIN_SW_ERROR_COUNTER_STOP); + return ret; +} + static int margining_run_write(void *data, u64 val) { struct tb_margining *margining = data; @@ -836,11 +1070,15 @@ static int margining_run_write(void *data, u64 val) clx = ret; } + /* Clear the results */ + memset(margining->results, 0, sizeof(margining->results)); + if (margining->software) { struct usb4_port_margining_params params = { .error_counter = USB4_MARGIN_SW_ERROR_COUNTER_CLEAR, .lanes = margining->lanes, .time = margining->time, + .voltage_time_offset = margining->voltage_time_offset, .right_high = margining->right_high, .optional_voltage_offset_range = margining->optional_voltage_offset_range, }; @@ -850,14 +1088,7 @@ static int margining_run_write(void *data, u64 val) margining->time ? "time" : "voltage", dev_name(dev), margining->lanes); - ret = usb4_port_sw_margin(port, margining->target, margining->index, ¶ms, - &margining->results[0]); - if (ret) - goto out_clx; - - ret = usb4_port_sw_margin_errors(port, margining->target, - margining->index, - &margining->results[0]); + ret = margining_run_sw(margining, ¶ms); } else { struct usb4_port_margining_params params = { .ber_level = margining->ber_level, @@ -867,10 +1098,6 @@ static int margining_run_write(void *data, u64 val) .optional_voltage_offset_range = margining->optional_voltage_offset_range, }; - /* Clear the results */ - margining->results[0] = 0; - margining->results[1] = 0; - tb_port_dbg(port, "running hardware %s lane margining for %s lanes %u\n", margining->time ? "time" : "voltage", dev_name(dev), @@ -880,7 +1107,6 @@ static int margining_run_write(void *data, u64 val) margining->results); } -out_clx: if (down_sw) tb_switch_clx_enable(down_sw, clx); out_unlock: @@ -909,6 +1135,13 @@ static ssize_t margining_results_write(struct file *file, margining->results[0] = 0; margining->results[1] = 0; + if (margining->software) { + /* Clear the error counters */ + margining_modify_error_counter(margining, + USB4_MARGIN_SW_ALL_LANES, + USB4_MARGIN_SW_ERROR_COUNTER_CLEAR); + } + mutex_unlock(&tb->lock); return count; } @@ -998,6 +1231,24 @@ static int margining_results_show(struct seq_file *s, void *not_used) voltage_margin_show(s, margining, val); } } + } else { + u32 lane_errors, result; + + seq_printf(s, "0x%08x\n", margining->results[1]); + result = FIELD_GET(USB4_MARGIN_SW_LANES_MASK, margining->results[0]); + + if (result == USB4_MARGIN_SW_LANE_0 || + result == USB4_MARGIN_SW_ALL_LANES) { + lane_errors = FIELD_GET(USB4_MARGIN_SW_ERR_COUNTER_LANE_0_MASK, + margining->results[1]); + seq_printf(s, "# lane 0 errors: %u\n", lane_errors); + } + if (result == USB4_MARGIN_SW_LANE_1 || + result == USB4_MARGIN_SW_ALL_LANES) { + lane_errors = FIELD_GET(USB4_MARGIN_SW_ERR_COUNTER_LANE_1_MASK, + margining->results[1]); + seq_printf(s, "# lane 1 errors: %u\n", lane_errors); + } } mutex_unlock(&tb->lock); @@ -1211,9 +1462,21 @@ static struct tb_margining *margining_alloc(struct tb_port *port, debugfs_create_file("margin", 0600, dir, margining, &margining_margin_fops); + margining->error_counter = USB4_MARGIN_SW_ERROR_COUNTER_CLEAR; + margining->dwell_time = MIN_DWELL_TIME; + if (supports_optional_voltage_offset_range(margining)) debugfs_create_file("optional_voltage_offset", DEBUGFS_MODE, dir, margining, &margining_optional_voltage_offset_fops); + + if (supports_software(margining)) { + debugfs_create_file("voltage_time_offset", DEBUGFS_MODE, dir, margining, + &margining_voltage_time_offset_fops); + debugfs_create_file("error_counter", DEBUGFS_MODE, dir, margining, + &margining_error_counter_fops); + debugfs_create_file("dwell_time", DEBUGFS_MODE, dir, margining, + &margining_dwell_time_fops); + } return margining; } diff --git a/drivers/thunderbolt/sb_regs.h b/drivers/thunderbolt/sb_regs.h index 8bff0740222c..dbcad25ead50 100644 --- a/drivers/thunderbolt/sb_regs.h +++ b/drivers/thunderbolt/sb_regs.h @@ -86,9 +86,17 @@ enum usb4_sb_opcode { #define USB4_MARGIN_HW_RES_1_L1_LL_MARGIN_SHIFT 24 /* USB4_SB_OPCODE_RUN_SW_LANE_MARGINING */ +#define USB4_MARGIN_SW_LANES_MASK GENMASK(2, 0) +#define USB4_MARGIN_SW_LANE_0 0x0 +#define USB4_MARGIN_SW_LANE_1 0x1 +#define USB4_MARGIN_SW_ALL_LANES 0x7 #define USB4_MARGIN_SW_TIME BIT(3) #define USB4_MARGIN_SW_RH BIT(4) #define USB4_MARGIN_SW_OPT_VOLTAGE BIT(5) +#define USB4_MARGIN_SW_VT_MASK GENMASK(12, 6) #define USB4_MARGIN_SW_COUNTER_MASK GENMASK(14, 13) +#define USB4_MARGIN_SW_ERR_COUNTER_LANE_0_MASK GENMASK(3, 0) +#define USB4_MARGIN_SW_ERR_COUNTER_LANE_1_MASK GENMASK(7, 4) + #endif diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 262c333924b8..6737188f2581 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -1372,6 +1372,7 @@ enum usb4_margin_sw_error_counter { * @error_counter: Error counter operation for software margining * @ber_level: Current BER level contour value * @lanes: %0, %1 or %7 (all) + * @voltage_time_offset: Offset for voltage / time for software margining * @optional_voltage_offset_range: Enable optional extended voltage range * @right_high: %false if left/low margin test is performed, %true if right/high * @time: %true if time margining is used instead of voltage @@ -1380,6 +1381,7 @@ struct usb4_port_margining_params { enum usb4_margin_sw_error_counter error_counter; u32 ber_level; u32 lanes; + u32 voltage_time_offset; bool optional_voltage_offset_range; bool right_high; bool time; diff --git a/drivers/thunderbolt/usb4.c b/drivers/thunderbolt/usb4.c index a2f81e17ad8d..0a9b4aeb3fa1 100644 --- a/drivers/thunderbolt/usb4.c +++ b/drivers/thunderbolt/usb4.c @@ -1723,6 +1723,7 @@ int usb4_port_sw_margin(struct tb_port *port, enum usb4_sb_target target, if (params->right_high) val |= USB4_MARGIN_SW_RH; val |= FIELD_PREP(USB4_MARGIN_SW_COUNTER_MASK, params->error_counter); + val |= FIELD_PREP(USB4_MARGIN_SW_VT_MASK, params->voltage_time_offset); ret = usb4_port_sb_write(port, target, index, USB4_SB_METADATA, &val, sizeof(val)); From b5a71dce6358a26441526ea313e6c8d3f35bb54e Mon Sep 17 00:00:00 2001 From: Konrad Dybcio Date: Tue, 20 Aug 2024 13:34:22 +0200 Subject: [PATCH 050/145] dt-bindings: usb: qcom,dwc3: Document X1E80100 MP controller The X1E80100, just like its predecessors, has a Multiport controller. This time around, 2 HS (eUSB) and 2 SS PHYs are attached. Document it. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Konrad Dybcio Link: https://lore.kernel.org/r/20240820-topic-h_mp-v2-1-d88518066372@quicinc.com Signed-off-by: Greg Kroah-Hartman --- Documentation/devicetree/bindings/usb/qcom,dwc3.yaml | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml index e99c55bb4e9c..18758efb8d29 100644 --- a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml @@ -52,6 +52,7 @@ properties: - qcom,sm8550-dwc3 - qcom,sm8650-dwc3 - qcom,x1e80100-dwc3 + - qcom,x1e80100-dwc3-mp - const: qcom,dwc3 reg: @@ -289,6 +290,7 @@ allOf: - qcom,sc8280xp-dwc3 - qcom,sc8280xp-dwc3-mp - qcom,x1e80100-dwc3 + - qcom,x1e80100-dwc3-mp then: properties: clocks: @@ -501,6 +503,7 @@ allOf: contains: enum: - qcom,sc8180x-dwc3-mp + - qcom,x1e80100-dwc3-mp then: properties: interrupts: From 3cc92765a58f82d6ae512d8035d99095bfa7164a Mon Sep 17 00:00:00 2001 From: Jinjie Ruan Date: Wed, 21 Aug 2024 15:18:56 +0800 Subject: [PATCH 051/145] usb: ehci-exynos: Simplify with scoped for each OF child loop Use scoped for_each_available_child_of_node_scoped() when iterating over device nodes to make code a bit simpler. Signed-off-by: Jinjie Ruan Reviewed-by: Krzysztof Kozlowski Acked-by: Alan Stern Reviewed-by: Anand Moon Link: https://lore.kernel.org/r/20240821071856.2335529-1-ruanjinjie@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-exynos.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c index f40bc2a7a124..e3a961d3f5fc 100644 --- a/drivers/usb/host/ehci-exynos.c +++ b/drivers/usb/host/ehci-exynos.c @@ -48,7 +48,6 @@ struct exynos_ehci_hcd { static int exynos_ehci_get_phy(struct device *dev, struct exynos_ehci_hcd *exynos_ehci) { - struct device_node *child; struct phy *phy; int phy_number, num_phys; int ret; @@ -66,26 +65,22 @@ static int exynos_ehci_get_phy(struct device *dev, return 0; /* Get PHYs using legacy bindings */ - for_each_available_child_of_node(dev->of_node, child) { + for_each_available_child_of_node_scoped(dev->of_node, child) { ret = of_property_read_u32(child, "reg", &phy_number); if (ret) { dev_err(dev, "Failed to parse device tree\n"); - of_node_put(child); return ret; } if (phy_number >= PHY_NUMBER) { dev_err(dev, "Invalid number of PHYs\n"); - of_node_put(child); return -EINVAL; } phy = devm_of_phy_optional_get(dev, child, NULL); exynos_ehci->phy[phy_number] = phy; - if (IS_ERR(phy)) { - of_node_put(child); + if (IS_ERR(phy)) return PTR_ERR(phy); - } } exynos_ehci->legacy_phy = true; From e24ed5e2f94e67a2b5d5bb2b45d1d23475189e48 Mon Sep 17 00:00:00 2001 From: Jinjie Ruan Date: Wed, 21 Aug 2024 15:17:52 +0800 Subject: [PATCH 052/145] usb: ohci-exynos: Simplify with scoped for each OF child loop Use scoped for_each_available_child_of_node_scoped() when iterating over device nodes to make code a bit simpler. Signed-off-by: Jinjie Ruan Reviewed-by: Krzysztof Kozlowski Acked-by: Alan Stern Reviewed-by: Anand Moon Link: https://lore.kernel.org/r/20240821071752.2335406-1-ruanjinjie@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-exynos.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c index bfa2eba4e3a7..1379e03644b2 100644 --- a/drivers/usb/host/ohci-exynos.c +++ b/drivers/usb/host/ohci-exynos.c @@ -37,7 +37,6 @@ struct exynos_ohci_hcd { static int exynos_ohci_get_phy(struct device *dev, struct exynos_ohci_hcd *exynos_ohci) { - struct device_node *child; struct phy *phy; int phy_number, num_phys; int ret; @@ -55,26 +54,22 @@ static int exynos_ohci_get_phy(struct device *dev, return 0; /* Get PHYs using legacy bindings */ - for_each_available_child_of_node(dev->of_node, child) { + for_each_available_child_of_node_scoped(dev->of_node, child) { ret = of_property_read_u32(child, "reg", &phy_number); if (ret) { dev_err(dev, "Failed to parse device tree\n"); - of_node_put(child); return ret; } if (phy_number >= PHY_NUMBER) { dev_err(dev, "Invalid number of PHYs\n"); - of_node_put(child); return -EINVAL; } phy = devm_of_phy_optional_get(dev, child, NULL); exynos_ohci->phy[phy_number] = phy; - if (IS_ERR(phy)) { - of_node_put(child); + if (IS_ERR(phy)) return PTR_ERR(phy); - } } exynos_ohci->legacy_phy = true; From 7393bf343a0346c4b0ac0f26991c45e9edf89cb7 Mon Sep 17 00:00:00 2001 From: Yuesong Li Date: Wed, 21 Aug 2024 16:52:45 +0800 Subject: [PATCH 053/145] usb: gadget: lpc32xx_udc: Remove NULL check of list_entry() list_entry() will never return a NULL pointer, thus remove the check. Signed-off-by: Yuesong Li Reviewed-by: Vladimir Zapolskiy Link: https://lore.kernel.org/r/20240821085245.25348-1-liyuesong@vivo.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/lpc32xx_udc.c | 67 +++++++++++++--------------- 1 file changed, 30 insertions(+), 37 deletions(-) diff --git a/drivers/usb/gadget/udc/lpc32xx_udc.c b/drivers/usb/gadget/udc/lpc32xx_udc.c index d5f29f8fe481..3bfd889ed56a 100644 --- a/drivers/usb/gadget/udc/lpc32xx_udc.c +++ b/drivers/usb/gadget/udc/lpc32xx_udc.c @@ -1487,31 +1487,29 @@ static int udc_ep0_out_req(struct lpc32xx_udc *udc) req = list_entry(ep0->queue.next, struct lpc32xx_request, queue); - if (req) { - if (req->req.length == 0) { - /* Just dequeue request */ - done(ep0, req, 0); - udc->ep0state = WAIT_FOR_SETUP; - return 1; - } + if (req->req.length == 0) { + /* Just dequeue request */ + done(ep0, req, 0); + udc->ep0state = WAIT_FOR_SETUP; + return 1; + } - /* Get data from FIFO */ - bufferspace = req->req.length - req->req.actual; - if (bufferspace > ep0->ep.maxpacket) - bufferspace = ep0->ep.maxpacket; + /* Get data from FIFO */ + bufferspace = req->req.length - req->req.actual; + if (bufferspace > ep0->ep.maxpacket) + bufferspace = ep0->ep.maxpacket; - /* Copy data to buffer */ - prefetchw(req->req.buf + req->req.actual); - tr = udc_read_hwep(udc, EP_OUT, req->req.buf + req->req.actual, - bufferspace); - req->req.actual += bufferspace; + /* Copy data to buffer */ + prefetchw(req->req.buf + req->req.actual); + tr = udc_read_hwep(udc, EP_OUT, req->req.buf + req->req.actual, + bufferspace); + req->req.actual += bufferspace; - if (tr < ep0->ep.maxpacket) { - /* This is the last packet */ - done(ep0, req, 0); - udc->ep0state = WAIT_FOR_SETUP; - return 1; - } + if (tr < ep0->ep.maxpacket) { + /* This is the last packet */ + done(ep0, req, 0); + udc->ep0state = WAIT_FOR_SETUP; + return 1; } return 0; @@ -1962,18 +1960,17 @@ static void udc_handle_eps(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) /* If there isn't a request waiting, something went wrong */ req = list_entry(ep->queue.next, struct lpc32xx_request, queue); - if (req) { - done(ep, req, 0); - /* Start another request if ready */ - if (!list_empty(&ep->queue)) { - if (ep->is_in) - udc_ep_in_req_dma(udc, ep); - else - udc_ep_out_req_dma(udc, ep); - } else - ep->req_pending = 0; - } + done(ep, req, 0); + + /* Start another request if ready */ + if (!list_empty(&ep->queue)) { + if (ep->is_in) + udc_ep_in_req_dma(udc, ep); + else + udc_ep_out_req_dma(udc, ep); + } else + ep->req_pending = 0; } @@ -1989,10 +1986,6 @@ static void udc_handle_dma_ep(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) #endif req = list_entry(ep->queue.next, struct lpc32xx_request, queue); - if (!req) { - ep_err(ep, "DMA interrupt on no req!\n"); - return; - } dd = req->dd_desc_ptr; /* DMA descriptor should always be retired for this call */ From e8778a25059c4ca4348398e612c9f1cfb8837258 Mon Sep 17 00:00:00 2001 From: Venkat Jayaraman Date: Tue, 13 Aug 2024 16:18:28 -0700 Subject: [PATCH 054/145] usb: typec: ucsi: Add DATA_RESET option of Connector Reset command Modify CONNECTOR_RESET command implementation to accommodate DATA_RESET reset type as defined in UCSI spec v2.0 and later. Hard Reset bit field was defined with value 1 in UCSI spec version 1.0. Starting with spec version 1.1, Hard Reset bit field was removed from the CONNECTOR_RESET command, until spec 2.0 reintroduced it with value 0, so, the value to pass in to the command for a Hard Reset is different depending on the UCSI version supported by the LPM. Reviewed-by: Heikki Krogerus Reviewed-by: Przemek Kitszel Signed-off-by: Venkat Jayaraman Link: https://lore.kernel.org/r/20240813231828.1192338-1-pooja.katiyar@intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/ucsi/ucsi.c | 16 +++++++++++++++- drivers/usb/typec/ucsi/ucsi.h | 5 ++++- 2 files changed, 19 insertions(+), 2 deletions(-) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 4039851551c1..546352b53bc4 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -1340,12 +1340,26 @@ EXPORT_SYMBOL_GPL(ucsi_connector_change); /* -------------------------------------------------------------------------- */ +/* + * Hard Reset bit field was defined with value 1 in UCSI spec version 1.0. + * Starting with spec version 1.1, Hard Reset bit field was removed from the + * CONNECTOR_RESET command, until spec 2.0 reintroduced it with value 0, so, in effect, + * the value to pass in to the command for a Hard Reset is different depending + * on the supported UCSI version by the LPM. + * + * For performing a Data Reset on LPMs supporting version 2.0 and greater, + * this function needs to be called with the second argument set to 0. + */ static int ucsi_reset_connector(struct ucsi_connector *con, bool hard) { u64 command; command = UCSI_CONNECTOR_RESET | UCSI_CONNECTOR_NUMBER(con->num); - command |= hard ? UCSI_CONNECTOR_RESET_HARD : 0; + + if (con->ucsi->version < UCSI_VERSION_1_1) + command |= hard ? UCSI_CONNECTOR_RESET_HARD_VER_1_0 : 0; + else if (con->ucsi->version >= UCSI_VERSION_2_0) + command |= hard ? 0 : UCSI_CONNECTOR_RESET_DATA_VER_2_0; return ucsi_send_command(con->ucsi, command, NULL, 0); } diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index 57129f3c0814..06c642e2838f 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -29,6 +29,7 @@ struct dentry; #define UCSIv2_MESSAGE_OUT 272 /* UCSI versions */ +#define UCSI_VERSION_1_1 0x0110 #define UCSI_VERSION_1_2 0x0120 #define UCSI_VERSION_2_0 0x0200 #define UCSI_VERSION_2_1 0x0210 @@ -122,7 +123,9 @@ void ucsi_connector_change(struct ucsi *ucsi, u8 num); #define UCSI_DEFAULT_GET_CONNECTOR_NUMBER(_cmd_) (((_cmd_) >> 16) & GENMASK(6, 0)) /* CONNECTOR_RESET command bits */ -#define UCSI_CONNECTOR_RESET_HARD BIT(23) /* Deprecated in v1.1 */ +#define UCSI_CONNECTOR_RESET_HARD_VER_1_0 BIT(23) /* Deprecated in v1.1 */ +#define UCSI_CONNECTOR_RESET_DATA_VER_2_0 BIT(23) /* Redefined in v2.0 */ + /* ACK_CC_CI bits */ #define UCSI_ACK_CONNECTOR_CHANGE BIT(16) From 8557ef3f24e48d00c09d85ef9241fb43f4fdfb0e Mon Sep 17 00:00:00 2001 From: Liao Chen Date: Wed, 14 Aug 2024 03:04:43 +0000 Subject: [PATCH 055/145] usb: bdc: fix module autoloading Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded based on the alias from of_device_id table. Signed-off-by: Liao Chen Acked-by: Florian Fainelli Link: https://lore.kernel.org/r/20240814030443.3876203-1-liaochen4@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/bdc/bdc_core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/gadget/udc/bdc/bdc_core.c b/drivers/usb/gadget/udc/bdc/bdc_core.c index 35a652807fca..5149e2b7f050 100644 --- a/drivers/usb/gadget/udc/bdc/bdc_core.c +++ b/drivers/usb/gadget/udc/bdc/bdc_core.c @@ -639,6 +639,7 @@ static const struct of_device_id bdc_of_match[] = { { .compatible = "brcm,bdc" }, { /* sentinel */ } }; +MODULE_DEVICE_TABLE(of, bdc_of_match); static struct platform_driver bdc_driver = { .driver = { From a7bb96b18864225a694e3887ac2733159489e4b0 Mon Sep 17 00:00:00 2001 From: Abhishek Tamboli Date: Thu, 15 Aug 2024 15:52:02 +0530 Subject: [PATCH 056/145] usb: gadget: uvc: Fix ERR_PTR dereference in uvc_v4l2.c Fix potential dereferencing of ERR_PTR() in find_format_by_pix() and uvc_v4l2_enum_format(). Fix the following smatch errors: drivers/usb/gadget/function/uvc_v4l2.c:124 find_format_by_pix() error: 'fmtdesc' dereferencing possible ERR_PTR() drivers/usb/gadget/function/uvc_v4l2.c:392 uvc_v4l2_enum_format() error: 'fmtdesc' dereferencing possible ERR_PTR() Also, fix similar issue in uvc_v4l2_try_format() for potential dereferencing of ERR_PTR(). Signed-off-by: Abhishek Tamboli Link: https://lore.kernel.org/r/20240815102202.594812-1-abhishektamboli9@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/function/uvc_v4l2.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/usb/gadget/function/uvc_v4l2.c b/drivers/usb/gadget/function/uvc_v4l2.c index a024aecb76dc..de1736f834e6 100644 --- a/drivers/usb/gadget/function/uvc_v4l2.c +++ b/drivers/usb/gadget/function/uvc_v4l2.c @@ -121,6 +121,9 @@ static struct uvcg_format *find_format_by_pix(struct uvc_device *uvc, list_for_each_entry(format, &uvc->header->formats, entry) { const struct uvc_format_desc *fmtdesc = to_uvc_format(format->fmt); + if (IS_ERR(fmtdesc)) + continue; + if (fmtdesc->fcc == pixelformat) { uformat = format->fmt; break; @@ -240,6 +243,7 @@ uvc_v4l2_try_format(struct file *file, void *fh, struct v4l2_format *fmt) struct uvc_video *video = &uvc->video; struct uvcg_format *uformat; struct uvcg_frame *uframe; + const struct uvc_format_desc *fmtdesc; u8 *fcc; if (fmt->type != video->queue.queue.type) @@ -277,7 +281,10 @@ uvc_v4l2_try_format(struct file *file, void *fh, struct v4l2_format *fmt) fmt->fmt.pix.height = uframe->frame.w_height; fmt->fmt.pix.bytesperline = uvc_v4l2_get_bytesperline(uformat, uframe); fmt->fmt.pix.sizeimage = uvc_get_frame_size(uformat, uframe); - fmt->fmt.pix.pixelformat = to_uvc_format(uformat)->fcc; + fmtdesc = to_uvc_format(uformat); + if (IS_ERR(fmtdesc)) + return PTR_ERR(fmtdesc); + fmt->fmt.pix.pixelformat = fmtdesc->fcc; } fmt->fmt.pix.field = V4L2_FIELD_NONE; fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; @@ -389,6 +396,9 @@ uvc_v4l2_enum_format(struct file *file, void *fh, struct v4l2_fmtdesc *f) return -EINVAL; fmtdesc = to_uvc_format(uformat); + if (IS_ERR(fmtdesc)) + return PTR_ERR(fmtdesc); + f->pixelformat = fmtdesc->fcc; return 0; From fe592c86fe9c3686d5e93515ebf4823a9fb5757e Mon Sep 17 00:00:00 2001 From: Masanori Ogino Date: Fri, 16 Aug 2024 09:02:22 +0000 Subject: [PATCH 057/145] Documentation: msm-hsusb.txt: remove Commit a170a1e9ccc5 ("usb: phy: remove phy-msm-usb.c") removed the device driver but left the corresponding documentation, delete it. Signed-off-by: Masanori Ogino Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20240816090105.13651-2-omasanori@proton.me Signed-off-by: Greg Kroah-Hartman --- .../devicetree/bindings/usb/msm-hsusb.txt | 110 ------------------ 1 file changed, 110 deletions(-) delete mode 100644 Documentation/devicetree/bindings/usb/msm-hsusb.txt diff --git a/Documentation/devicetree/bindings/usb/msm-hsusb.txt b/Documentation/devicetree/bindings/usb/msm-hsusb.txt deleted file mode 100644 index afc30e98b123..000000000000 --- a/Documentation/devicetree/bindings/usb/msm-hsusb.txt +++ /dev/null @@ -1,110 +0,0 @@ -MSM SoC HSUSB controllers - -EHCI - -Required properties: -- compatible: Should contain "qcom,ehci-host" -- regs: offset and length of the register set in the memory map -- usb-phy: phandle for the PHY device - -Example EHCI controller device node: - - ehci: ehci@f9a55000 { - compatible = "qcom,ehci-host"; - reg = <0xf9a55000 0x400>; - usb-phy = <&usb_otg>; - }; - -USB PHY with optional OTG: - -Required properties: -- compatible: Should contain: - "qcom,usb-otg-ci" for chipsets with ChipIdea 45nm PHY - "qcom,usb-otg-snps" for chipsets with Synopsys 28nm PHY - -- regs: Offset and length of the register set in the memory map -- interrupts: interrupt-specifier for the OTG interrupt. - -- clocks: A list of phandle + clock-specifier pairs for the - clocks listed in clock-names -- clock-names: Should contain the following: - "phy" USB PHY reference clock - "core" Protocol engine clock - "iface" Interface bus clock - "alt_core" Protocol engine clock for targets with asynchronous - reset methodology. (optional) - -- vdccx-supply: phandle to the regulator for the vdd supply for - digital circuit operation. -- v1p8-supply: phandle to the regulator for the 1.8V supply -- v3p3-supply: phandle to the regulator for the 3.3V supply - -- resets: A list of phandle + reset-specifier pairs for the - resets listed in reset-names -- reset-names: Should contain the following: - "phy" USB PHY controller reset - "link" USB LINK controller reset - -- qcom,otg-control: OTG control (VBUS and ID notifications) can be one of - 1 - PHY control - 2 - PMIC control - -Optional properties: -- dr_mode: One of "host", "peripheral" or "otg". Defaults to "otg" - -- switch-gpio: A phandle + gpio-specifier pair. Some boards are using Dual - SPDT USB Switch, witch is controlled by GPIO to de/multiplex - D+/D- USB lines between connectors. - -- qcom,phy-init-sequence: PHY configuration sequence values. This is related to Device - Mode Eye Diagram test. Start address at which these values will be - written is ULPI_EXT_VENDOR_SPECIFIC. Value of -1 is reserved as - "do not overwrite default value at this address". - For example: qcom,phy-init-sequence = < -1 0x63 >; - Will update only value at address ULPI_EXT_VENDOR_SPECIFIC + 1. - -- qcom,phy-num: Select number of pyco-phy to use, can be one of - 0 - PHY one, default - 1 - Second PHY - Some platforms may have configuration to allow USB - controller work with any of the two HSPHYs present. - -- qcom,vdd-levels: This property must be a list of three integer values - (no, min, max) where each value represents either a voltage - in microvolts or a value corresponding to voltage corner. - -- qcom,manual-pullup: If present, vbus is not routed to USB controller/phy - and controller driver therefore enables pull-up explicitly - before starting controller using usbcmd run/stop bit. - -- extcon: phandles to external connector devices. First phandle - should point to external connector, which provide "USB" - cable events, the second should point to external connector - device, which provide "USB-HOST" cable events. If one of - the external connector devices is not required empty <0> - phandle should be specified. - -Example HSUSB OTG controller device node: - - usb@f9a55000 { - compatible = "qcom,usb-otg-snps"; - reg = <0xf9a55000 0x400>; - interrupts = <0 134 0>; - dr_mode = "peripheral"; - - clocks = <&gcc GCC_XO_CLK>, <&gcc GCC_USB_HS_SYSTEM_CLK>, - <&gcc GCC_USB_HS_AHB_CLK>; - - clock-names = "phy", "core", "iface"; - - vddcx-supply = <&pm8841_s2_corner>; - v1p8-supply = <&pm8941_l6>; - v3p3-supply = <&pm8941_l24>; - - resets = <&gcc GCC_USB2A_PHY_BCR>, <&gcc GCC_USB_HS_BCR>; - reset-names = "phy", "link"; - - qcom,otg-control = <1>; - qcom,phy-init-sequence = < -1 0x63 >; - qcom,vdd-levels = <1 5 7>; - }; From 29f5f2c0821ab7749b000e7157e71e8e1c2ace6d Mon Sep 17 00:00:00 2001 From: Frank Li Date: Thu, 15 Aug 2024 11:21:58 -0400 Subject: [PATCH 058/145] dt-bindings: usb: add layerscape super speed usb support Add missed binding doc for layerscape dwc3 usb controller. Fix below warning: arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-kbox-a-230-ls.dtb: /soc/usb@3100000: failed to match any schema with compatible: ['fsl,ls1028a-dwc3', 'snps,dwc3'] Signed-off-by: Frank Li Reviewed-by: Rob Herring (Arm) Link: https://lore.kernel.org/r/20240815152159.4177782-1-Frank.Li@nxp.com Signed-off-by: Greg Kroah-Hartman --- .../devicetree/bindings/usb/fsl,ls1028a.yaml | 52 +++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/fsl,ls1028a.yaml diff --git a/Documentation/devicetree/bindings/usb/fsl,ls1028a.yaml b/Documentation/devicetree/bindings/usb/fsl,ls1028a.yaml new file mode 100644 index 000000000000..a44bdf391887 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/fsl,ls1028a.yaml @@ -0,0 +1,52 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/fsl,ls1028a.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale layerscape SuperSpeed DWC3 USB SoC controller + +maintainers: + - Frank Li + +select: + properties: + compatible: + contains: + enum: + - fsl,ls1028a-dwc3 + required: + - compatible + +properties: + compatible: + items: + - enum: + - fsl,ls1028a-dwc3 + - const: snps,dwc3 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + +unevaluatedProperties: false + +required: + - compatible + - reg + - interrupts + +allOf: + - $ref: snps,dwc3.yaml# + +examples: + - | + #include + + usb@fe800000 { + compatible = "fsl,ls1028a-dwc3", "snps,dwc3"; + reg = <0xfe800000 0x100000>; + interrupts = ; + }; From db63d9868f7f310de44ba7bea584e2454f8b4ed0 Mon Sep 17 00:00:00 2001 From: Wadim Egorov Date: Fri, 16 Aug 2024 14:41:50 +0200 Subject: [PATCH 059/145] usb: typec: tipd: Free IRQ only if it was requested before In polling mode, if no IRQ was requested there is no need to free it. Call devm_free_irq() only if client->irq is set. This fixes the warning caused by the tps6598x module removal: WARNING: CPU: 2 PID: 333 at kernel/irq/devres.c:144 devm_free_irq+0x80/0x8c ... ... Call trace: devm_free_irq+0x80/0x8c tps6598x_remove+0x28/0x88 [tps6598x] i2c_device_remove+0x2c/0x9c device_remove+0x4c/0x80 device_release_driver_internal+0x1cc/0x228 driver_detach+0x50/0x98 bus_remove_driver+0x6c/0xbc driver_unregister+0x30/0x60 i2c_del_driver+0x54/0x64 tps6598x_i2c_driver_exit+0x18/0xc3c [tps6598x] __arm64_sys_delete_module+0x184/0x264 invoke_syscall+0x48/0x110 el0_svc_common.constprop.0+0xc8/0xe8 do_el0_svc+0x20/0x2c el0_svc+0x28/0x98 el0t_64_sync_handler+0x13c/0x158 el0t_64_sync+0x190/0x194 Signed-off-by: Wadim Egorov Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240816124150.608125-1-w.egorov@phytec.de Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tipd/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c index dd51a25480bf..256b0c054e9a 100644 --- a/drivers/usb/typec/tipd/core.c +++ b/drivers/usb/typec/tipd/core.c @@ -1465,8 +1465,9 @@ static void tps6598x_remove(struct i2c_client *client) if (!client->irq) cancel_delayed_work_sync(&tps->wq_poll); + else + devm_free_irq(tps->dev, client->irq, tps); - devm_free_irq(tps->dev, client->irq, tps); tps6598x_disconnect(tps, 0); typec_unregister_port(tps->port); usb_role_switch_put(tps->role_sw); From a139c98f760efa1b6f0ee2f36ea6f62f04c8b20a Mon Sep 17 00:00:00 2001 From: Chris Wulff Date: Sat, 17 Aug 2024 10:28:51 -0400 Subject: [PATCH 060/145] USB: gadget: f_hid: Add GET_REPORT via userspace IOCTL While supporting GET_REPORT is a mandatory request per the HID specification the current implementation of the GET_REPORT request responds to the USB Host with an empty reply of the request length. However, some USB Hosts will request the contents of feature reports via the GET_REPORT request. In addition, some proprietary HID 'protocols' will expect different data, for the same report ID, to be to become available in the feature report by sending a preceding SET_REPORT to the USB Device that defines what data is to be presented when that feature report is subsequently retrieved via GET_REPORT (with a very fast < 5ms turn around between the SET_REPORT and the GET_REPORT). There are two other patch sets already submitted for adding GET_REPORT support. The first [1] allows for pre-priming a list of reports via IOCTLs which then allows the USB Host to perform the request, with no further userspace interaction possible during the GET_REPORT request. And another [2] which allows for a single report to be setup by userspace via IOCTL, which will be fetched and returned by the kernel for subsequent GET_REPORT requests by the USB Host, also with no further userspace interaction possible. This patch, while loosely based on both the patch sets, differs by allowing the option for userspace to respond to each GET_REPORT request by setting up a poll to notify userspace that a new GET_REPORT request has arrived. To support this, two extra IOCTLs are supplied. The first of which is used to retrieve the report ID of the GET_REPORT request (in the case of having non-zero report IDs in the HID descriptor). The second IOCTL allows for storing report responses in a list for responding to requests. The report responses are stored in a list (it will be either added if it does not exist or updated if it exists already). A flag (userspace_req) can be set to whether subsequent requests notify userspace or not. Basic operation when a GET_REPORT request arrives from USB Host: - If the report ID exists in the list and it is set for immediate return (i.e. userspace_req == false) then response is sent immediately, userspace is not notified - The report ID does not exist, or exists but is set to notify userspace (i.e. userspace_req == true) then notify userspace via poll: - If userspace responds, and either adds or update the response in the list and respond to the host with the contents - If userspace does not respond within the fixed timeout (2500ms) but the report has been set prevously, then send 'old' report contents - If userspace does not respond within the fixed timeout (2500ms) and the report does not exist in the list then send an empty report Note that userspace could 'prime' the report list at any other time. While this patch allows for flexibility in how the system responds to requests, and therefore the HID 'protocols' that could be supported, a drawback is the time it takes to service the requests and therefore the maximum throughput that would be achievable. The USB HID Specification v1.11 itself states that GET_REPORT is not intended for periodic data polling, so this limitation is not severe. Testing on an iMX8M Nano Ultra Lite with a heavy multi-core CPU loading showed that userspace can typically respond to the GET_REPORT request within 1200ms - which is well within the 5000ms most operating systems seem to allow, and within the 2500ms set by this patch. [1] https://lore.kernel.org/all/20220805070507.123151-2-sunil@amarulasolutions.com/ [2] https://lore.kernel.org/all/20220726005824.2817646-1-vi@endrift.com/ Signed-off-by: David Sands Signed-off-by: Chris Wulff Link: https://lore.kernel.org/r/20240817142850.1311460-2-crwulff@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/function/f_hid.c | 273 +++++++++++++++++++++++++++- include/uapi/linux/usb/g_hid.h | 40 ++++ include/uapi/linux/usb/gadgetfs.h | 2 +- 3 files changed, 307 insertions(+), 8 deletions(-) create mode 100644 include/uapi/linux/usb/g_hid.h diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c index 93dae017ae45..82c7dff6de5c 100644 --- a/drivers/usb/gadget/function/f_hid.c +++ b/drivers/usb/gadget/function/f_hid.c @@ -15,13 +15,21 @@ #include #include #include +#include #include +#include #include "u_f.h" #include "u_hid.h" #define HIDG_MINORS 4 +/* + * Most operating systems seem to allow for 5000ms timeout, we will allow + * userspace half that time to respond before we return an empty report. + */ +#define GET_REPORT_TIMEOUT_MS 2500 + static int major, minors; static const struct class hidg_class = { @@ -31,6 +39,11 @@ static const struct class hidg_class = { static DEFINE_IDA(hidg_ida); static DEFINE_MUTEX(hidg_ida_lock); /* protects access to hidg_ida */ +struct report_entry { + struct usb_hidg_report report_data; + struct list_head node; +}; + /*-------------------------------------------------------------------------*/ /* HID gadget struct */ @@ -75,6 +88,19 @@ struct f_hidg { wait_queue_head_t write_queue; struct usb_request *req; + /* get report */ + struct usb_request *get_req; + struct usb_hidg_report get_report; + bool get_report_returned; + int get_report_req_report_id; + int get_report_req_report_length; + spinlock_t get_report_spinlock; + wait_queue_head_t get_queue; /* Waiting for userspace response */ + wait_queue_head_t get_id_queue; /* Get ID came in */ + struct work_struct work; + struct workqueue_struct *workqueue; + struct list_head report_list; + struct device dev; struct cdev cdev; struct usb_function func; @@ -524,6 +550,174 @@ release_write_pending: return status; } +static struct report_entry *f_hidg_search_for_report(struct f_hidg *hidg, u8 report_id) +{ + struct list_head *ptr; + struct report_entry *entry; + + list_for_each(ptr, &hidg->report_list) { + entry = list_entry(ptr, struct report_entry, node); + if (entry->report_data.report_id == report_id) + return entry; + } + + return NULL; +} + +static void get_report_workqueue_handler(struct work_struct *work) +{ + struct f_hidg *hidg = container_of(work, struct f_hidg, work); + struct usb_composite_dev *cdev = hidg->func.config->cdev; + struct usb_request *req; + struct report_entry *ptr; + unsigned long flags; + + int status = 0; + + spin_lock_irqsave(&hidg->get_report_spinlock, flags); + req = hidg->get_req; + if (!req) { + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + return; + } + + req->zero = 0; + req->length = min_t(unsigned int, min_t(unsigned int, hidg->get_report_req_report_length, + hidg->report_length), + MAX_REPORT_LENGTH); + + /* Check if there is a response available for immediate response */ + ptr = f_hidg_search_for_report(hidg, hidg->get_report_req_report_id); + if (ptr && !ptr->report_data.userspace_req) { + /* Report exists in list and it is to be used for immediate response */ + req->buf = ptr->report_data.data; + status = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); + hidg->get_report_returned = true; + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + } else { + /* + * Report does not exist in list or should not be immediately sent + * i.e. give userspace time to respond + */ + hidg->get_report_returned = false; + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + wake_up(&hidg->get_id_queue); +#define GET_REPORT_COND (!hidg->get_report_returned) + /* Wait until userspace has responded or timeout */ + status = wait_event_interruptible_timeout(hidg->get_queue, !GET_REPORT_COND, + msecs_to_jiffies(GET_REPORT_TIMEOUT_MS)); + spin_lock_irqsave(&hidg->get_report_spinlock, flags); + req = hidg->get_req; + if (!req) { + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + return; + } + if (status == 0 && !hidg->get_report_returned) { + /* GET_REPORT request was not serviced by userspace within timeout period */ + VDBG(cdev, "get_report : userspace timeout.\n"); + hidg->get_report_returned = true; + } + + /* Search again for report ID in list and respond to GET_REPORT request */ + ptr = f_hidg_search_for_report(hidg, hidg->get_report_req_report_id); + if (ptr) { + /* + * Either get an updated response just serviced by userspace + * or send the latest response in the list + */ + req->buf = ptr->report_data.data; + } else { + /* If there are no prevoiusly sent reports send empty report */ + req->buf = hidg->get_report.data; + memset(req->buf, 0x0, req->length); + } + + status = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + } + + if (status < 0) + VDBG(cdev, "usb_ep_queue error on ep0 responding to GET_REPORT\n"); +} + +static int f_hidg_get_report_id(struct file *file, __u8 __user *buffer) +{ + struct f_hidg *hidg = file->private_data; + int ret = 0; + + ret = put_user(hidg->get_report_req_report_id, buffer); + + return ret; +} + +static int f_hidg_get_report(struct file *file, struct usb_hidg_report __user *buffer) +{ + struct f_hidg *hidg = file->private_data; + struct usb_composite_dev *cdev = hidg->func.config->cdev; + unsigned long flags; + struct report_entry *entry; + struct report_entry *ptr; + __u8 report_id; + + entry = kmalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) + return -ENOMEM; + + if (copy_from_user(&entry->report_data, buffer, + sizeof(struct usb_hidg_report))) { + ERROR(cdev, "copy_from_user error\n"); + kfree(entry); + return -EINVAL; + } + + report_id = entry->report_data.report_id; + + spin_lock_irqsave(&hidg->get_report_spinlock, flags); + ptr = f_hidg_search_for_report(hidg, report_id); + + if (ptr) { + /* Report already exists in list - update it */ + if (copy_from_user(&ptr->report_data, buffer, + sizeof(struct usb_hidg_report))) { + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + ERROR(cdev, "copy_from_user error\n"); + kfree(entry); + return -EINVAL; + } + kfree(entry); + } else { + /* Report does not exist in list - add it */ + list_add_tail(&entry->node, &hidg->report_list); + } + + /* If there is no response pending then do nothing further */ + if (hidg->get_report_returned) { + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + return 0; + } + + /* If this userspace response serves the current pending report */ + if (hidg->get_report_req_report_id == report_id) { + hidg->get_report_returned = true; + wake_up(&hidg->get_queue); + } + + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + return 0; +} + +static long f_hidg_ioctl(struct file *file, unsigned int code, unsigned long arg) +{ + switch (code) { + case GADGET_HID_READ_GET_REPORT_ID: + return f_hidg_get_report_id(file, (__u8 __user *)arg); + case GADGET_HID_WRITE_GET_REPORT: + return f_hidg_get_report(file, (struct usb_hidg_report __user *)arg); + default: + return -ENOTTY; + } +} + static __poll_t f_hidg_poll(struct file *file, poll_table *wait) { struct f_hidg *hidg = file->private_data; @@ -531,6 +725,8 @@ static __poll_t f_hidg_poll(struct file *file, poll_table *wait) poll_wait(file, &hidg->read_queue, wait); poll_wait(file, &hidg->write_queue, wait); + poll_wait(file, &hidg->get_queue, wait); + poll_wait(file, &hidg->get_id_queue, wait); if (WRITE_COND) ret |= EPOLLOUT | EPOLLWRNORM; @@ -543,12 +739,16 @@ static __poll_t f_hidg_poll(struct file *file, poll_table *wait) ret |= EPOLLIN | EPOLLRDNORM; } + if (GET_REPORT_COND) + ret |= EPOLLPRI; + return ret; } #undef WRITE_COND #undef READ_COND_SSREPORT #undef READ_COND_INTOUT +#undef GET_REPORT_COND static int f_hidg_release(struct inode *inode, struct file *fd) { @@ -641,6 +841,10 @@ static void hidg_ssreport_complete(struct usb_ep *ep, struct usb_request *req) wake_up(&hidg->read_queue); } +static void hidg_get_report_complete(struct usb_ep *ep, struct usb_request *req) +{ +} + static int hidg_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) { @@ -649,6 +853,7 @@ static int hidg_setup(struct usb_function *f, struct usb_request *req = cdev->req; int status = 0; __u16 value, length; + unsigned long flags; value = __le16_to_cpu(ctrl->wValue); length = __le16_to_cpu(ctrl->wLength); @@ -660,14 +865,20 @@ static int hidg_setup(struct usb_function *f, switch ((ctrl->bRequestType << 8) | ctrl->bRequest) { case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8 | HID_REQ_GET_REPORT): - VDBG(cdev, "get_report\n"); + VDBG(cdev, "get_report | wLength=%d\n", ctrl->wLength); - /* send an empty report */ - length = min_t(unsigned, length, hidg->report_length); - memset(req->buf, 0x0, length); + /* + * Update GET_REPORT ID so that an ioctl can be used to determine what + * GET_REPORT the request was actually for. + */ + spin_lock_irqsave(&hidg->get_report_spinlock, flags); + hidg->get_report_req_report_id = value & 0xff; + hidg->get_report_req_report_length = length; + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); - goto respond; - break; + queue_work(hidg->workqueue, &hidg->work); + + return status; case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8 | HID_REQ_GET_PROTOCOL): @@ -793,6 +1004,14 @@ static void hidg_disable(struct usb_function *f) spin_unlock_irqrestore(&hidg->read_spinlock, flags); } + spin_lock_irqsave(&hidg->get_report_spinlock, flags); + if (!hidg->get_report_returned) { + usb_ep_free_request(f->config->cdev->gadget->ep0, hidg->get_req); + hidg->get_req = NULL; + hidg->get_report_returned = true; + } + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + spin_lock_irqsave(&hidg->write_spinlock, flags); if (!hidg->write_pending) { free_ep_req(hidg->in_ep, hidg->req); @@ -902,6 +1121,14 @@ fail: return status; } +#ifdef CONFIG_COMPAT +static long f_hidg_compat_ioctl(struct file *file, unsigned int code, + unsigned long value) +{ + return f_hidg_ioctl(file, code, value); +} +#endif + static const struct file_operations f_hidg_fops = { .owner = THIS_MODULE, .open = f_hidg_open, @@ -909,6 +1136,10 @@ static const struct file_operations f_hidg_fops = { .write = f_hidg_write, .read = f_hidg_read, .poll = f_hidg_poll, + .unlocked_ioctl = f_hidg_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = f_hidg_compat_ioctl, +#endif .llseek = noop_llseek, }; @@ -919,6 +1150,15 @@ static int hidg_bind(struct usb_configuration *c, struct usb_function *f) struct usb_string *us; int status; + hidg->get_req = usb_ep_alloc_request(c->cdev->gadget->ep0, GFP_ATOMIC); + if (!hidg->get_req) + return -ENOMEM; + + hidg->get_req->zero = 0; + hidg->get_req->complete = hidg_get_report_complete; + hidg->get_req->context = hidg; + hidg->get_report_returned = true; + /* maybe allocate device-global string IDs, and patch descriptors */ us = usb_gstrings_attach(c->cdev, ct_func_strings, ARRAY_SIZE(ct_func_string_defs)); @@ -1004,9 +1244,24 @@ static int hidg_bind(struct usb_configuration *c, struct usb_function *f) hidg->write_pending = 1; hidg->req = NULL; spin_lock_init(&hidg->read_spinlock); + spin_lock_init(&hidg->get_report_spinlock); init_waitqueue_head(&hidg->write_queue); init_waitqueue_head(&hidg->read_queue); + init_waitqueue_head(&hidg->get_queue); + init_waitqueue_head(&hidg->get_id_queue); INIT_LIST_HEAD(&hidg->completed_out_req); + INIT_LIST_HEAD(&hidg->report_list); + + INIT_WORK(&hidg->work, get_report_workqueue_handler); + hidg->workqueue = alloc_workqueue("report_work", + WQ_FREEZABLE | + WQ_MEM_RECLAIM, + 1); + + if (!hidg->workqueue) { + status = -ENOMEM; + goto fail; + } /* create char device */ cdev_init(&hidg->cdev, &f_hidg_fops); @@ -1016,12 +1271,16 @@ static int hidg_bind(struct usb_configuration *c, struct usb_function *f) return 0; fail_free_descs: + destroy_workqueue(hidg->workqueue); usb_free_all_descriptors(f); fail: ERROR(f->config->cdev, "hidg_bind FAILED\n"); if (hidg->req != NULL) free_ep_req(hidg->in_ep, hidg->req); + usb_ep_free_request(c->cdev->gadget->ep0, hidg->get_req); + hidg->get_req = NULL; + return status; } @@ -1256,7 +1515,7 @@ static void hidg_unbind(struct usb_configuration *c, struct usb_function *f) struct f_hidg *hidg = func_to_hidg(f); cdev_device_del(&hidg->cdev, &hidg->dev); - + destroy_workqueue(hidg->workqueue); usb_free_all_descriptors(f); } diff --git a/include/uapi/linux/usb/g_hid.h b/include/uapi/linux/usb/g_hid.h new file mode 100644 index 000000000000..b965092db476 --- /dev/null +++ b/include/uapi/linux/usb/g_hid.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ + +#ifndef __UAPI_LINUX_USB_G_HID_H +#define __UAPI_LINUX_USB_G_HID_H + +#include + +/* Maximum HID report length for High-Speed USB (i.e. USB 2.0) */ +#define MAX_REPORT_LENGTH 64 + +/** + * struct usb_hidg_report - response to GET_REPORT + * @report_id: report ID that this is a response for + * @userspace_req: + * !0 this report is used for any pending GET_REPORT request + * but wait on userspace to issue a new report on future requests + * 0 this report is to be used for any future GET_REPORT requests + * @length: length of the report response + * @data: report response + * @padding: padding for 32/64 bit compatibility + * + * Structure used by GADGET_HID_WRITE_GET_REPORT ioctl on /dev/hidg*. + */ +struct usb_hidg_report { + __u8 report_id; + __u8 userspace_req; + __u16 length; + __u8 data[MAX_REPORT_LENGTH]; + __u8 padding[4]; +}; + +/* The 'g' code is used by gadgetfs and hid gadget ioctl requests. + * Don't add any colliding codes to either driver, and keep + * them in unique ranges. + */ + +#define GADGET_HID_READ_GET_REPORT_ID _IOR('g', 0x41, __u8) +#define GADGET_HID_WRITE_GET_REPORT _IOW('g', 0x42, struct usb_hidg_report) + +#endif /* __UAPI_LINUX_USB_G_HID_H */ diff --git a/include/uapi/linux/usb/gadgetfs.h b/include/uapi/linux/usb/gadgetfs.h index 835473910a49..9754822b2a40 100644 --- a/include/uapi/linux/usb/gadgetfs.h +++ b/include/uapi/linux/usb/gadgetfs.h @@ -62,7 +62,7 @@ struct usb_gadgetfs_event { }; -/* The 'g' code is also used by printer gadget ioctl requests. +/* The 'g' code is also used by printer and hid gadget ioctl requests. * Don't add any colliding codes to either driver, and keep * them in unique ranges (size 0x20 for now). */ From 9ecf52153b6f6681853b60c9912231e03857dff4 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Fri, 16 Aug 2024 16:58:54 +0300 Subject: [PATCH 061/145] usb: typec: ucsi: Remove unused fields from struct ucsi_connector_status The new fields are valid only with the new UCSI versions. They are at offsets that go beyond the MAX_DATA_LENGTH (16 bytes) with the older UCSI versions. That has not caused any problems before because nothing uses those new fields yet. Because they are not used yet, dropping them for now. Signed-off-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240816135859.3499351-2-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/ucsi/ucsi.h | 27 ++------------------------- 1 file changed, 2 insertions(+), 25 deletions(-) diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index 06c642e2838f..6359baa22858 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -347,35 +347,12 @@ struct ucsi_connector_status { #define UCSI_CONSTAT_PARTNER_TYPE_AUDIO 6 u32 request_data_obj; - u8 pwr_status[3]; -#define UCSI_CONSTAT_BC_STATUS(_p_) ((_p_[0]) & GENMASK(1, 0)) + u8 pwr_status; +#define UCSI_CONSTAT_BC_STATUS(_p_) ((_p_) & GENMASK(1, 0)) #define UCSI_CONSTAT_BC_NOT_CHARGING 0 #define UCSI_CONSTAT_BC_NOMINAL_CHARGING 1 #define UCSI_CONSTAT_BC_SLOW_CHARGING 2 #define UCSI_CONSTAT_BC_TRICKLE_CHARGING 3 -#define UCSI_CONSTAT_PROVIDER_CAP_LIMIT(_p_) (((_p_[0]) & GENMASK(5, 2)) >> 2) -#define UCSI_CONSTAT_CAP_PWR_LOWERED 0 -#define UCSI_CONSTAT_CAP_PWR_BUDGET_LIMIT 1 -#define UCSI_CONSTAT_PROVIDER_PD_VERSION_OPER_MODE(_p_) \ - ((get_unaligned_le32(_p_) & GENMASK(21, 6)) >> 6) -#define UCSI_CONSTAT_ORIENTATION(_p_) (((_p_[2]) & GENMASK(6, 6)) >> 6) -#define UCSI_CONSTAT_ORIENTATION_DIRECT 0 -#define UCSI_CONSTAT_ORIENTATION_FLIPPED 1 -#define UCSI_CONSTAT_SINK_PATH_STATUS(_p_) (((_p_[2]) & GENMASK(7, 7)) >> 7) -#define UCSI_CONSTAT_SINK_PATH_DISABLED 0 -#define UCSI_CONSTAT_SINK_PATH_ENABLED 1 - u8 pwr_readings[9]; -#define UCSI_CONSTAT_REV_CURR_PROT_STATUS(_p_) ((_p_[0]) & 0x1) -#define UCSI_CONSTAT_PWR_READING_VALID(_p_) (((_p_[0]) & GENMASK(1, 1)) >> 1) -#define UCSI_CONSTAT_CURRENT_SCALE(_p_) (((_p_[0]) & GENMASK(4, 2)) >> 2) -#define UCSI_CONSTAT_PEAK_CURRENT(_p_) \ - ((get_unaligned_le32(_p_) & GENMASK(20, 5)) >> 5) -#define UCSI_CONSTAT_AVG_CURRENT(_p_) \ - ((get_unaligned_le32(&(_p_)[2]) & GENMASK(20, 5)) >> 5) -#define UCSI_CONSTAT_VOLTAGE_SCALE(_p_) \ - ((get_unaligned_le16(&(_p_)[4]) & GENMASK(8, 5)) >> 5) -#define UCSI_CONSTAT_VOLTAGE_READING(_p_) \ - ((get_unaligned_le32(&(_p_)[5]) & GENMASK(16, 1)) >> 1) } __packed; /* From 1d05c382ddb4e43ce251a50f308df5e42a2f6088 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Fri, 16 Aug 2024 16:58:55 +0300 Subject: [PATCH 062/145] usb: typec: ucsi: Don't truncate the reads That may silently corrupt the data. Instead, failing attempts to read more than the interface can handle. Signed-off-by: Heikki Krogerus Reviewed-by: Abhishek Pandit-Subedi Link: https://lore.kernel.org/r/20240816135859.3499351-3-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/ucsi/ucsi.c | 8 ++------ drivers/usb/typec/ucsi/ucsi.h | 2 ++ 2 files changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 546352b53bc4..250bd20f2cd9 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -99,12 +99,8 @@ static int ucsi_run_command(struct ucsi *ucsi, u64 command, u32 *cci, *cci = 0; - /* - * Below UCSI 2.0, MESSAGE_IN was limited to 16 bytes. Truncate the - * reads here. - */ - if (ucsi->version <= UCSI_VERSION_1_2) - size = clamp(size, 0, 16); + if (size > UCSI_MAX_DATA_LENGTH(ucsi)) + return -EINVAL; ret = ucsi->ops->sync_control(ucsi, command); if (ret) diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index 6359baa22858..e8ece3fdcbf2 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -415,6 +415,8 @@ struct ucsi { #define UCSI_DELAY_DEVICE_PDOS BIT(1) /* Reading PDOs fails until the parter is in PD mode */ }; +#define UCSI_MAX_DATA_LENGTH(u) (((u)->version < UCSI_VERSION_2_0) ? 0x10 : 0xff) + #define UCSI_MAX_SVID 5 #define UCSI_MAX_ALTMODES (UCSI_MAX_SVID * 6) From 73910c511b1a665a993d66dceb0ffafbacd2ece6 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Fri, 16 Aug 2024 16:58:56 +0300 Subject: [PATCH 063/145] usb: typec: ucsi: Only assign the identity structure if the PPM supports it This will make sure that the identity sysfs attribute files are kept hidden if the UCSI interface doesn't support reading the USB Power Delivery messages. Signed-off-by: Heikki Krogerus Reviewed-by: Abhishek Pandit-Subedi Link: https://lore.kernel.org/r/20240816135859.3499351-4-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/ucsi/ucsi.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 250bd20f2cd9..4c128c2342f3 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -979,7 +979,8 @@ static int ucsi_register_cable(struct ucsi_connector *con) break; } - desc.identity = &con->cable_identity; + if (con->ucsi->cap.features & UCSI_CAP_GET_PD_MESSAGE) + desc.identity = &con->cable_identity; desc.active = !!(UCSI_CABLE_PROP_FLAG_ACTIVE_CABLE & con->cable_prop.flags); desc.pd_revision = UCSI_CABLE_PROP_FLAG_PD_MAJOR_REV_AS_BCD( @@ -1058,7 +1059,8 @@ static int ucsi_register_partner(struct ucsi_connector *con) if (pwr_opmode == UCSI_CONSTAT_PWR_OPMODE_PD) ucsi_register_device_pdos(con); - desc.identity = &con->partner_identity; + if (con->ucsi->cap.features & UCSI_CAP_GET_PD_MESSAGE) + desc.identity = &con->partner_identity; desc.usb_pd = pwr_opmode == UCSI_CONSTAT_PWR_OPMODE_PD; desc.pd_revision = UCSI_CONCAP_FLAG_PARTNER_PD_MAJOR_REV_AS_BCD(con->cap.flags); From 9289e6f5ee679629e2ece4b87dc14ee6e1e1dfc3 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Fri, 16 Aug 2024 16:58:57 +0300 Subject: [PATCH 064/145] usb: typec: ucsi: Common function for the GET_PD_MESSAGE command So far that command was only used to read the response to the Discover Identity Request, but it is handled with two separate functions, which is not really necessary. Squashing the command execution into a single function. That function can now also be used to read other messages on top of the Request Identity response. Signed-off-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240816135859.3499351-5-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/ucsi/ucsi.c | 92 ++++++++++------------------------- drivers/usb/typec/ucsi/ucsi.h | 12 ----- 2 files changed, 27 insertions(+), 77 deletions(-) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 4c128c2342f3..2d8ebeac02b8 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -748,104 +748,66 @@ static struct usb_power_delivery_capabilities *ucsi_get_pd_caps(struct ucsi_conn &pd_caps); } -static int ucsi_read_identity(struct ucsi_connector *con, u8 recipient, - u8 offset, u8 bytes, void *resp) +static int ucsi_get_pd_message(struct ucsi_connector *con, u8 recipient, + size_t bytes, void *data, u8 type) { - struct ucsi *ucsi = con->ucsi; + size_t len = min(bytes, UCSI_MAX_DATA_LENGTH(con->ucsi)); u64 command; + u8 offset; int ret; - command = UCSI_COMMAND(UCSI_GET_PD_MESSAGE) | - UCSI_CONNECTOR_NUMBER(con->num); - command |= UCSI_GET_PD_MESSAGE_RECIPIENT(recipient); - command |= UCSI_GET_PD_MESSAGE_OFFSET(offset); - command |= UCSI_GET_PD_MESSAGE_BYTES(bytes); - command |= UCSI_GET_PD_MESSAGE_TYPE(UCSI_GET_PD_MESSAGE_TYPE_IDENTITY); + for (offset = 0; offset < bytes; offset += len) { + len = min(len, bytes - offset); - ret = ucsi_send_command(ucsi, command, resp, bytes); - if (ret < 0) - dev_err(ucsi->dev, "UCSI_GET_PD_MESSAGE failed (%d)\n", ret); + command = UCSI_COMMAND(UCSI_GET_PD_MESSAGE) | UCSI_CONNECTOR_NUMBER(con->num); + command |= UCSI_GET_PD_MESSAGE_RECIPIENT(recipient); + command |= UCSI_GET_PD_MESSAGE_OFFSET(offset); + command |= UCSI_GET_PD_MESSAGE_BYTES(len); + command |= UCSI_GET_PD_MESSAGE_TYPE(type); - return ret; -} - -static int ucsi_get_identity(struct ucsi_connector *con, u8 recipient, - struct usb_pd_identity *id) -{ - struct ucsi *ucsi = con->ucsi; - struct ucsi_pd_message_disc_id resp = {}; - int ret; - - if (ucsi->version < UCSI_VERSION_2_0) { - /* - * Before UCSI v2.0, MESSAGE_IN is 16 bytes which cannot fit - * the 28 byte identity response including the VDM header. - * First request the VDM header, ID Header VDO, Cert Stat VDO - * and Product VDO. - */ - ret = ucsi_read_identity(con, recipient, 0, 0x10, &resp); - if (ret < 0) - return ret; - - - /* Then request Product Type VDO1 through Product Type VDO3. */ - ret = ucsi_read_identity(con, recipient, 0x10, 0xc, - &resp.vdo[0]); - if (ret < 0) - return ret; - - } else { - /* - * In UCSI v2.0 and after, MESSAGE_IN is large enough to request - * the large enough to request the full Discover Identity - * response at once. - */ - ret = ucsi_read_identity(con, recipient, 0x0, 0x1c, &resp); + ret = ucsi_send_command(con->ucsi, command, data + offset, len); if (ret < 0) return ret; } - id->id_header = resp.id_header; - id->cert_stat = resp.cert_stat; - id->product = resp.product; - id->vdo[0] = resp.vdo[0]; - id->vdo[1] = resp.vdo[1]; - id->vdo[2] = resp.vdo[2]; return 0; } static int ucsi_get_partner_identity(struct ucsi_connector *con) { + u32 vdo[7] = {}; int ret; - ret = ucsi_get_identity(con, UCSI_RECIPIENT_SOP, - &con->partner_identity); + ret = ucsi_get_pd_message(con, UCSI_RECIPIENT_SOP, sizeof(vdo), vdo, + UCSI_GET_PD_MESSAGE_TYPE_IDENTITY); if (ret < 0) return ret; + /* VDM Header is not part of struct usb_pd_identity, so dropping it. */ + con->partner_identity = *(struct usb_pd_identity *)&vdo[1]; + ret = typec_partner_set_identity(con->partner); - if (ret < 0) { - dev_err(con->ucsi->dev, "Failed to set partner identity (%d)\n", - ret); - } + if (ret < 0) + dev_err(con->ucsi->dev, "Failed to set partner identity (%d)\n", ret); return ret; } static int ucsi_get_cable_identity(struct ucsi_connector *con) { + u32 vdo[7] = {}; int ret; - ret = ucsi_get_identity(con, UCSI_RECIPIENT_SOP_P, - &con->cable_identity); + ret = ucsi_get_pd_message(con, UCSI_RECIPIENT_SOP_P, sizeof(vdo), vdo, + UCSI_GET_PD_MESSAGE_TYPE_IDENTITY); if (ret < 0) return ret; + con->cable_identity = *(struct usb_pd_identity *)&vdo[1]; + ret = typec_cable_set_identity(con->cable); - if (ret < 0) { - dev_err(con->ucsi->dev, "Failed to set cable identity (%d)\n", - ret); - } + if (ret < 0) + dev_err(con->ucsi->dev, "Failed to set cable identity (%d)\n", ret); return ret; } diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index e8ece3fdcbf2..63cc7f982663 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -355,18 +355,6 @@ struct ucsi_connector_status { #define UCSI_CONSTAT_BC_TRICKLE_CHARGING 3 } __packed; -/* - * Data structure filled by PPM in response to GET_PD_MESSAGE command with the - * Response Message Type set to Discover Identity Response. - */ -struct ucsi_pd_message_disc_id { - u32 vdm_header; - u32 id_header; - u32 cert_stat; - u32 product; - u32 vdo[3]; -} __packed; - /* -------------------------------------------------------------------------- */ struct ucsi_debugfs_entry { From 4f322657ade1b784bb2b1ba8761469ae87520681 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Fri, 16 Aug 2024 16:58:58 +0300 Subject: [PATCH 065/145] usb: typec: ucsi: Call CANCEL from single location The command cancellation can be done right after detecting that the PPM is busy. There is no need to do it separately in ucsi_read_error() and ucsi_send_command_common(). Signed-off-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240816135859.3499351-6-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/ucsi/ucsi.c | 17 ++++------------- 1 file changed, 4 insertions(+), 13 deletions(-) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 2d8ebeac02b8..8be10a207121 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -111,7 +111,7 @@ static int ucsi_run_command(struct ucsi *ucsi, u64 command, u32 *cci, return ret; if (*cci & UCSI_CCI_BUSY) - return -EBUSY; + return ucsi_run_command(ucsi, UCSI_CANCEL, cci, NULL, 0, false) ?: -EBUSY; if (!(*cci & UCSI_CCI_COMMAND_COMPLETE)) return -EIO; @@ -144,15 +144,7 @@ static int ucsi_read_error(struct ucsi *ucsi, u8 connector_num) int ret; command = UCSI_GET_ERROR_STATUS | UCSI_CONNECTOR_NUMBER(connector_num); - ret = ucsi_run_command(ucsi, command, &cci, - &error, sizeof(error), false); - - if (cci & UCSI_CCI_BUSY) { - ret = ucsi_run_command(ucsi, UCSI_CANCEL, &cci, NULL, 0, false); - - return ret ? ret : -EBUSY; - } - + ret = ucsi_run_command(ucsi, command, &cci, &error, sizeof(error), false); if (ret < 0) return ret; @@ -234,9 +226,8 @@ static int ucsi_send_command_common(struct ucsi *ucsi, u64 cmd, mutex_lock(&ucsi->ppm_lock); ret = ucsi_run_command(ucsi, cmd, &cci, data, size, conn_ack); - if (cci & UCSI_CCI_BUSY) - ret = ucsi_run_command(ucsi, UCSI_CANCEL, &cci, NULL, 0, false) ?: -EBUSY; - else if (cci & UCSI_CCI_ERROR) + + if (cci & UCSI_CCI_ERROR) ret = ucsi_read_error(ucsi, connector_num); mutex_unlock(&ucsi->ppm_lock); From fb9804096bb3508e33ade5a72f2332080cf1324b Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Fri, 16 Aug 2024 16:58:59 +0300 Subject: [PATCH 066/145] usb: typec: ucsi: Remove useless error check from ucsi_read_error() If the GET_ERROR_STATUS command fails, ucsi_read_error() can not reach the condition where the CCI error bit is checked, because ucsi_run_command() has already checked that bit and returned an error. Signed-off-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240816135859.3499351-7-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/ucsi/ucsi.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 8be10a207121..f0b5867048e2 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -148,9 +148,6 @@ static int ucsi_read_error(struct ucsi *ucsi, u8 connector_num) if (ret < 0) return ret; - if (cci & UCSI_CCI_ERROR) - return -EIO; - switch (error) { case UCSI_ERROR_INCOMPATIBLE_PARTNER: return -EOPNOTSUPP; From 3df1b090a437596bb5ca90f5e6ed8648d485af29 Mon Sep 17 00:00:00 2001 From: Liao Chen Date: Thu, 22 Aug 2024 13:01:10 +0000 Subject: [PATCH 067/145] usb: phy: phy-gpio-vbus-usb: fix module autoloading Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded based on the alias from of_device_id table. Signed-off-by: Liao Chen Link: https://lore.kernel.org/r/20240822130113.164644-2-liaochen4@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/phy/phy-gpio-vbus-usb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/phy/phy-gpio-vbus-usb.c b/drivers/usb/phy/phy-gpio-vbus-usb.c index 817c242a76ca..5428b2b67de1 100644 --- a/drivers/usb/phy/phy-gpio-vbus-usb.c +++ b/drivers/usb/phy/phy-gpio-vbus-usb.c @@ -374,6 +374,7 @@ static const struct of_device_id gpio_vbus_of_match[] = { }, {}, }; +MODULE_DEVICE_TABLE(of, gpio_vbus_of_match); static struct platform_driver gpio_vbus_driver = { .driver = { From 62cadfb51852bf691e9cfa0bf0a8426c3b922e18 Mon Sep 17 00:00:00 2001 From: Liao Chen Date: Thu, 22 Aug 2024 13:01:11 +0000 Subject: [PATCH 068/145] usb: misc: brcmstb-usb-pinmap: fix module autoloading Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded based on the alias from of_device_id table. Signed-off-by: Liao Chen Acked-by: Florian Fainelli Link: https://lore.kernel.org/r/20240822130113.164644-3-liaochen4@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/brcmstb-usb-pinmap.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/misc/brcmstb-usb-pinmap.c b/drivers/usb/misc/brcmstb-usb-pinmap.c index 2b2019c19cde..1ce885e4184c 100644 --- a/drivers/usb/misc/brcmstb-usb-pinmap.c +++ b/drivers/usb/misc/brcmstb-usb-pinmap.c @@ -335,6 +335,7 @@ static const struct of_device_id brcmstb_usb_pinmap_of_match[] = { { .compatible = "brcm,usb-pinmap" }, { }, }; +MODULE_DEVICE_TABLE(of, brcmstb_usb_pinmap_of_match); static struct platform_driver brcmstb_usb_pinmap_driver = { .driver = { From 15a34e5d4b23ce500d8de8ac8e084c417a500255 Mon Sep 17 00:00:00 2001 From: Liao Chen Date: Thu, 22 Aug 2024 13:01:12 +0000 Subject: [PATCH 069/145] usb: typec: fix module autoloading Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded based on the alias from of_device_id table. Signed-off-by: Liao Chen Link: https://lore.kernel.org/r/20240822130113.164644-4-liaochen4@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/anx7411.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/typec/anx7411.c b/drivers/usb/typec/anx7411.c index 1a35c6d6f36b..06d88e9caeaf 100644 --- a/drivers/usb/typec/anx7411.c +++ b/drivers/usb/typec/anx7411.c @@ -1577,6 +1577,7 @@ static const struct of_device_id anx_match_table[] = { {.compatible = "analogix,anx7411",}, {}, }; +MODULE_DEVICE_TABLE(of, anx_match_table); static struct i2c_driver anx7411_driver = { .driver = { From 4333dbd9798d470d0c81608bb44bb7c8fd7f7948 Mon Sep 17 00:00:00 2001 From: Liao Chen Date: Thu, 22 Aug 2024 13:01:13 +0000 Subject: [PATCH 070/145] usb: ehci-brcm: fix module autoloading Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded based on the alias from of_device_id table. Signed-off-by: Liao Chen Acked-by: Florian Fainelli Link: https://lore.kernel.org/r/20240822130113.164644-5-liaochen4@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-brcm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/host/ehci-brcm.c b/drivers/usb/host/ehci-brcm.c index 77e42c739c58..68cad0620f1a 100644 --- a/drivers/usb/host/ehci-brcm.c +++ b/drivers/usb/host/ehci-brcm.c @@ -246,6 +246,7 @@ static const struct of_device_id brcm_ehci_of_match[] = { { .compatible = "brcm,bcm7445-ehci", }, {} }; +MODULE_DEVICE_TABLE(of, brcm_ehci_of_match); static struct platform_driver ehci_brcm_driver = { .probe = ehci_brcm_probe, From fc88bb11617978fb3fcfcc697fd5c9d2dae9c4a3 Mon Sep 17 00:00:00 2001 From: Amit Sunil Dhamne Date: Thu, 22 Aug 2024 15:37:15 -0700 Subject: [PATCH 071/145] usb: roles: add lockdep class key to struct usb_role_switch There can be multiple role switch devices running on a platform. Given that lockdep is not capable of differentiating between locks of different instances, false positive warnings for circular locking are reported. To prevent this, register unique lockdep key for each of the individual instances. Signed-off-by: Amit Sunil Dhamne Reviewed-by: Badhri Jagan Sridharan Link: https://lore.kernel.org/r/20240822223717.253433-1-amitsd@google.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/roles/class.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c index d7aa913ceb8a..7aca1ef7f44c 100644 --- a/drivers/usb/roles/class.c +++ b/drivers/usb/roles/class.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -33,6 +34,8 @@ struct usb_role_switch { usb_role_switch_set_t set; usb_role_switch_get_t get; bool allow_userspace_control; + + struct lock_class_key key; }; #define to_role_switch(d) container_of(d, struct usb_role_switch, dev) @@ -396,6 +399,9 @@ usb_role_switch_register(struct device *parent, sw->registered = true; + lockdep_register_key(&sw->key); + lockdep_set_class(&sw->lock, &sw->key); + /* TODO: Symlinks for the host port and the device controller. */ return sw; @@ -412,6 +418,9 @@ void usb_role_switch_unregister(struct usb_role_switch *sw) { if (IS_ERR_OR_NULL(sw)) return; + + lockdep_unregister_key(&sw->key); + sw->registered = false; if (dev_fwnode(&sw->dev)) component_del(&sw->dev, &connector_ops); From af8a6e65f42c6c89414017cc4d78403e83056172 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Fri, 3 May 2024 12:10:52 +0200 Subject: [PATCH 072/145] USB: serial: set driver owner when registering drivers Modules registering drivers with usb_serial_register_drivers() might forget to set .owner field. The field is used by some of other kernel parts for reference counting (try_module_get()), so it is expected that drivers will set it. Solve the problem by moving this task away from the drivers to the core USB serial code, just like we did for platform_driver in commit 9447057eaff8 ("platform_device: use a macro instead of platform_driver_register"). Signed-off-by: Krzysztof Kozlowski [ johan: amend commit summary ] Signed-off-by: Johan Hovold --- drivers/usb/serial/usb-serial.c | 12 +++++++----- include/linux/usb/serial.h | 7 +++++-- 2 files changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index f1e91eb7f8a4..df6a2ae0bf42 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -1459,17 +1459,18 @@ static void usb_serial_deregister(struct usb_serial_driver *device) } /** - * usb_serial_register_drivers - register drivers for a usb-serial module + * __usb_serial_register_drivers - register drivers for a usb-serial module * @serial_drivers: NULL-terminated array of pointers to drivers to be registered + * @owner: owning module * @name: name of the usb_driver for this set of @serial_drivers * @id_table: list of all devices this @serial_drivers set binds to * * Registers all the drivers in the @serial_drivers array, and dynamically * creates a struct usb_driver with the name @name and id_table of @id_table. */ -int usb_serial_register_drivers(struct usb_serial_driver *const serial_drivers[], - const char *name, - const struct usb_device_id *id_table) +int __usb_serial_register_drivers(struct usb_serial_driver *const serial_drivers[], + struct module *owner, const char *name, + const struct usb_device_id *id_table) { int rc; struct usb_driver *udriver; @@ -1514,6 +1515,7 @@ int usb_serial_register_drivers(struct usb_serial_driver *const serial_drivers[] for (sd = serial_drivers; *sd; ++sd) { (*sd)->usb_driver = udriver; + (*sd)->driver.owner = owner; rc = usb_serial_register(*sd); if (rc) goto err_deregister_drivers; @@ -1532,7 +1534,7 @@ err_free_driver: kfree(udriver); return rc; } -EXPORT_SYMBOL_GPL(usb_serial_register_drivers); +EXPORT_SYMBOL_GPL(__usb_serial_register_drivers); /** * usb_serial_deregister_drivers - deregister drivers for a usb-serial module diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index 1a0a4dc87980..75b2b763f1ba 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -311,8 +311,11 @@ struct usb_serial_driver { #define to_usb_serial_driver(d) \ container_of(d, struct usb_serial_driver, driver) -int usb_serial_register_drivers(struct usb_serial_driver *const serial_drivers[], - const char *name, const struct usb_device_id *id_table); +#define usb_serial_register_drivers(serial_drivers, name, id_table) \ + __usb_serial_register_drivers(serial_drivers, THIS_MODULE, name, id_table) +int __usb_serial_register_drivers(struct usb_serial_driver *const serial_drivers[], + struct module *owner, const char *name, + const struct usb_device_id *id_table); void usb_serial_deregister_drivers(struct usb_serial_driver *const serial_drivers[]); void usb_serial_port_softint(struct usb_serial_port *port); From 6d243588e95ec221e533cc749106aaefaea27486 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Fri, 3 May 2024 12:10:53 +0200 Subject: [PATCH 073/145] USB: serial: drop driver owner initialization Core in usb_serial_register_drivers() already sets the .owner, so driver does not need to. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Johan Hovold --- drivers/usb/serial/aircable.c | 1 - drivers/usb/serial/ark3116.c | 1 - drivers/usb/serial/belkin_sa.c | 1 - drivers/usb/serial/ch341.c | 1 - drivers/usb/serial/cp210x.c | 1 - drivers/usb/serial/cyberjack.c | 1 - drivers/usb/serial/cypress_m8.c | 3 --- drivers/usb/serial/digi_acceleport.c | 2 -- drivers/usb/serial/empeg.c | 1 - drivers/usb/serial/f81232.c | 2 -- drivers/usb/serial/f81534.c | 1 - drivers/usb/serial/ftdi_sio.c | 1 - drivers/usb/serial/garmin_gps.c | 1 - drivers/usb/serial/generic.c | 1 - drivers/usb/serial/io_edgeport.c | 4 ---- drivers/usb/serial/io_ti.c | 2 -- drivers/usb/serial/ipaq.c | 1 - drivers/usb/serial/ipw.c | 1 - drivers/usb/serial/ir-usb.c | 1 - drivers/usb/serial/iuu_phoenix.c | 1 - drivers/usb/serial/keyspan.c | 4 ---- drivers/usb/serial/keyspan_pda.c | 2 -- drivers/usb/serial/kl5kusb105.c | 1 - drivers/usb/serial/kobil_sct.c | 1 - drivers/usb/serial/mct_u232.c | 1 - drivers/usb/serial/metro-usb.c | 1 - drivers/usb/serial/mos7720.c | 1 - drivers/usb/serial/mos7840.c | 1 - drivers/usb/serial/mxuport.c | 1 - drivers/usb/serial/navman.c | 1 - drivers/usb/serial/omninet.c | 1 - drivers/usb/serial/opticon.c | 1 - drivers/usb/serial/option.c | 1 - drivers/usb/serial/oti6858.c | 1 - drivers/usb/serial/pl2303.c | 1 - drivers/usb/serial/qcaux.c | 1 - drivers/usb/serial/qcserial.c | 1 - drivers/usb/serial/quatech2.c | 1 - drivers/usb/serial/safe_serial.c | 1 - drivers/usb/serial/sierra.c | 1 - drivers/usb/serial/spcp8x5.c | 1 - drivers/usb/serial/ssu100.c | 1 - drivers/usb/serial/symbolserial.c | 1 - drivers/usb/serial/ti_usb_3410_5052.c | 2 -- drivers/usb/serial/upd78f0730.c | 1 - drivers/usb/serial/usb-serial-simple.c | 1 - drivers/usb/serial/usb_debug.c | 2 -- drivers/usb/serial/visor.c | 3 --- drivers/usb/serial/whiteheat.c | 2 -- drivers/usb/serial/wishbone-serial.c | 1 - drivers/usb/serial/xr_serial.c | 1 - drivers/usb/serial/xsens_mt.c | 1 - 52 files changed, 69 deletions(-) diff --git a/drivers/usb/serial/aircable.c b/drivers/usb/serial/aircable.c index a1df686c3066..aa517242d060 100644 --- a/drivers/usb/serial/aircable.c +++ b/drivers/usb/serial/aircable.c @@ -138,7 +138,6 @@ static void aircable_process_read_urb(struct urb *urb) static struct usb_serial_driver aircable_device = { .driver = { - .owner = THIS_MODULE, .name = "aircable", }, .id_table = id_table, diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c index 67a07cc007f0..800b04fe37fa 100644 --- a/drivers/usb/serial/ark3116.c +++ b/drivers/usb/serial/ark3116.c @@ -599,7 +599,6 @@ static void ark3116_process_read_urb(struct urb *urb) static struct usb_serial_driver ark3116_device = { .driver = { - .owner = THIS_MODULE, .name = "ark3116", }, .id_table = id_table, diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c index cf47ee4ae5d3..44f5b58beec9 100644 --- a/drivers/usb/serial/belkin_sa.c +++ b/drivers/usb/serial/belkin_sa.c @@ -66,7 +66,6 @@ MODULE_DEVICE_TABLE(usb, id_table); /* All of the device info needed for the serial converters */ static struct usb_serial_driver belkin_device = { .driver = { - .owner = THIS_MODULE, .name = "belkin", }, .description = "Belkin / Peracom / GoHubs USB Serial Adapter", diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index 0870c6533f80..02945ccf531d 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -837,7 +837,6 @@ static int ch341_reset_resume(struct usb_serial *serial) static struct usb_serial_driver ch341_device = { .driver = { - .owner = THIS_MODULE, .name = "ch341-uart", }, .id_table = id_table, diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 21fd26609252..c24101f0a07a 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -299,7 +299,6 @@ struct cp210x_port_private { static struct usb_serial_driver cp210x_device = { .driver = { - .owner = THIS_MODULE, .name = "cp210x", }, .id_table = id_table, diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c index 51e5aac3bf4c..76dd8e7453b5 100644 --- a/drivers/usb/serial/cyberjack.c +++ b/drivers/usb/serial/cyberjack.c @@ -67,7 +67,6 @@ MODULE_DEVICE_TABLE(usb, id_table); static struct usb_serial_driver cyberjack_device = { .driver = { - .owner = THIS_MODULE, .name = "cyberjack", }, .description = "Reiner SCT Cyberjack USB card reader", diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index 1e0c028c5ec9..ce9134bb30f3 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -139,7 +139,6 @@ static void cypress_write_int_callback(struct urb *urb); static struct usb_serial_driver cypress_earthmate_device = { .driver = { - .owner = THIS_MODULE, .name = "earthmate", }, .description = "DeLorme Earthmate USB", @@ -166,7 +165,6 @@ static struct usb_serial_driver cypress_earthmate_device = { static struct usb_serial_driver cypress_hidcom_device = { .driver = { - .owner = THIS_MODULE, .name = "cyphidcom", }, .description = "HID->COM RS232 Adapter", @@ -192,7 +190,6 @@ static struct usb_serial_driver cypress_hidcom_device = { static struct usb_serial_driver cypress_ca42v2_device = { .driver = { - .owner = THIS_MODULE, .name = "nokiaca42v2", }, .description = "Nokia CA-42 V2 Adapter", diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c index d1dea3850576..a06485965412 100644 --- a/drivers/usb/serial/digi_acceleport.c +++ b/drivers/usb/serial/digi_acceleport.c @@ -262,7 +262,6 @@ MODULE_DEVICE_TABLE(usb, id_table_combined); static struct usb_serial_driver digi_acceleport_2_device = { .driver = { - .owner = THIS_MODULE, .name = "digi_2", }, .description = "Digi 2 port USB adapter", @@ -293,7 +292,6 @@ static struct usb_serial_driver digi_acceleport_2_device = { static struct usb_serial_driver digi_acceleport_4_device = { .driver = { - .owner = THIS_MODULE, .name = "digi_4", }, .description = "Digi 4 port USB adapter", diff --git a/drivers/usb/serial/empeg.c b/drivers/usb/serial/empeg.c index 405e835e93dd..aedcf7ebd269 100644 --- a/drivers/usb/serial/empeg.c +++ b/drivers/usb/serial/empeg.c @@ -43,7 +43,6 @@ MODULE_DEVICE_TABLE(usb, id_table); static struct usb_serial_driver empeg_device = { .driver = { - .owner = THIS_MODULE, .name = "empeg", }, .id_table = id_table, diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c index 5f7a46bcace6..530b77fc2f78 100644 --- a/drivers/usb/serial/f81232.c +++ b/drivers/usb/serial/f81232.c @@ -967,7 +967,6 @@ static int f81232_resume(struct usb_serial *serial) static struct usb_serial_driver f81232_device = { .driver = { - .owner = THIS_MODULE, .name = "f81232", }, .id_table = f81232_id_table, @@ -994,7 +993,6 @@ static struct usb_serial_driver f81232_device = { static struct usb_serial_driver f81534a_device = { .driver = { - .owner = THIS_MODULE, .name = "f81534a", }, .id_table = f81534a_id_table, diff --git a/drivers/usb/serial/f81534.c b/drivers/usb/serial/f81534.c index ef126cd3d94f..685930ac8383 100644 --- a/drivers/usb/serial/f81534.c +++ b/drivers/usb/serial/f81534.c @@ -1538,7 +1538,6 @@ static int f81534_resume(struct usb_serial *serial) static struct usb_serial_driver f81534_device = { .driver = { - .owner = THIS_MODULE, .name = "f81534", }, .description = DRIVER_DESC, diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 76a04ab41100..c6f17d732b95 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -2871,7 +2871,6 @@ static int ftdi_ioctl(struct tty_struct *tty, static struct usb_serial_driver ftdi_device = { .driver = { - .owner = THIS_MODULE, .name = "ftdi_sio", .dev_groups = ftdi_groups, }, diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c index 6d6ec7eed87c..b97ba8ed6801 100644 --- a/drivers/usb/serial/garmin_gps.c +++ b/drivers/usb/serial/garmin_gps.c @@ -1412,7 +1412,6 @@ static void garmin_port_remove(struct usb_serial_port *port) /* All of the device info needed */ static struct usb_serial_driver garmin_device = { .driver = { - .owner = THIS_MODULE, .name = "garmin_gps", }, .description = "Garmin GPS usb/tty", diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 15b6dee3a8e5..757f0a586ddb 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -63,7 +63,6 @@ static int usb_serial_generic_calc_num_ports(struct usb_serial *serial, static struct usb_serial_driver usb_serial_generic_device = { .driver = { - .owner = THIS_MODULE, .name = "generic", }, .id_table = generic_device_ids, diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index abe4bbb0ac65..c7d6b5e3f898 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -2978,7 +2978,6 @@ static void edge_port_remove(struct usb_serial_port *port) static struct usb_serial_driver edgeport_2port_device = { .driver = { - .owner = THIS_MODULE, .name = "edgeport_2", }, .description = "Edgeport 2 port adapter", @@ -3013,7 +3012,6 @@ static struct usb_serial_driver edgeport_2port_device = { static struct usb_serial_driver edgeport_4port_device = { .driver = { - .owner = THIS_MODULE, .name = "edgeport_4", }, .description = "Edgeport 4 port adapter", @@ -3048,7 +3046,6 @@ static struct usb_serial_driver edgeport_4port_device = { static struct usb_serial_driver edgeport_8port_device = { .driver = { - .owner = THIS_MODULE, .name = "edgeport_8", }, .description = "Edgeport 8 port adapter", @@ -3083,7 +3080,6 @@ static struct usb_serial_driver edgeport_8port_device = { static struct usb_serial_driver epic_device = { .driver = { - .owner = THIS_MODULE, .name = "epic", }, .description = "EPiC device", diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 7a3a6e539456..7d0584b2a234 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -2670,7 +2670,6 @@ static int edge_resume(struct usb_serial *serial) static struct usb_serial_driver edgeport_1port_device = { .driver = { - .owner = THIS_MODULE, .name = "edgeport_ti_1", }, .description = "Edgeport TI 1 port adapter", @@ -2708,7 +2707,6 @@ static struct usb_serial_driver edgeport_1port_device = { static struct usb_serial_driver edgeport_2port_device = { .driver = { - .owner = THIS_MODULE, .name = "edgeport_ti_2", }, .description = "Edgeport TI 2 port adapter", diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c index e11441bac44f..3c6a9b9b9c2b 100644 --- a/drivers/usb/serial/ipaq.c +++ b/drivers/usb/serial/ipaq.c @@ -496,7 +496,6 @@ MODULE_DEVICE_TABLE(usb, ipaq_id_table); /* All of the device info needed for the Compaq iPAQ */ static struct usb_serial_driver ipaq_device = { .driver = { - .owner = THIS_MODULE, .name = "ipaq", }, .description = "PocketPC PDA", diff --git a/drivers/usb/serial/ipw.c b/drivers/usb/serial/ipw.c index d04c7cc5c1c2..b1e672c2f423 100644 --- a/drivers/usb/serial/ipw.c +++ b/drivers/usb/serial/ipw.c @@ -285,7 +285,6 @@ static void ipw_close(struct usb_serial_port *port) static struct usb_serial_driver ipw_device = { .driver = { - .owner = THIS_MODULE, .name = "ipw", }, .description = "IPWireless converter", diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index 82f108134e6f..a106b71e698f 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -71,7 +71,6 @@ MODULE_DEVICE_TABLE(usb, ir_id_table); static struct usb_serial_driver ir_device = { .driver = { - .owner = THIS_MODULE, .name = "ir-usb", }, .description = "IR Dongle", diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c index 77cba71bcccb..c21dcc9b6f05 100644 --- a/drivers/usb/serial/iuu_phoenix.c +++ b/drivers/usb/serial/iuu_phoenix.c @@ -1157,7 +1157,6 @@ static int iuu_remove_sysfs_attrs(struct usb_serial_port *port) static struct usb_serial_driver iuu_device = { .driver = { - .owner = THIS_MODULE, .name = "iuu_phoenix", }, .id_table = id_table, diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c index 0a783985197c..9129e0282c24 100644 --- a/drivers/usb/serial/keyspan.c +++ b/drivers/usb/serial/keyspan.c @@ -3001,7 +3001,6 @@ static void keyspan_port_remove(struct usb_serial_port *port) /* Structs for the devices, pre and post renumeration. */ static struct usb_serial_driver keyspan_pre_device = { .driver = { - .owner = THIS_MODULE, .name = "keyspan_no_firm", }, .description = "Keyspan - (without firmware)", @@ -3012,7 +3011,6 @@ static struct usb_serial_driver keyspan_pre_device = { static struct usb_serial_driver keyspan_1port_device = { .driver = { - .owner = THIS_MODULE, .name = "keyspan_1", }, .description = "Keyspan 1 port adapter", @@ -3036,7 +3034,6 @@ static struct usb_serial_driver keyspan_1port_device = { static struct usb_serial_driver keyspan_2port_device = { .driver = { - .owner = THIS_MODULE, .name = "keyspan_2", }, .description = "Keyspan 2 port adapter", @@ -3060,7 +3057,6 @@ static struct usb_serial_driver keyspan_2port_device = { static struct usb_serial_driver keyspan_4port_device = { .driver = { - .owner = THIS_MODULE, .name = "keyspan_4", }, .description = "Keyspan 4 port adapter", diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c index 0eef358b314a..e98b479593d3 100644 --- a/drivers/usb/serial/keyspan_pda.c +++ b/drivers/usb/serial/keyspan_pda.c @@ -676,7 +676,6 @@ static void keyspan_pda_port_remove(struct usb_serial_port *port) static struct usb_serial_driver keyspan_pda_fake_device = { .driver = { - .owner = THIS_MODULE, .name = "keyspan_pda_pre", }, .description = "Keyspan PDA - (prerenumeration)", @@ -687,7 +686,6 @@ static struct usb_serial_driver keyspan_pda_fake_device = { static struct usb_serial_driver keyspan_pda_device = { .driver = { - .owner = THIS_MODULE, .name = "keyspan_pda", }, .description = "Keyspan PDA", diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c index 394b3189e003..a2c0bebc041f 100644 --- a/drivers/usb/serial/kl5kusb105.c +++ b/drivers/usb/serial/kl5kusb105.c @@ -75,7 +75,6 @@ MODULE_DEVICE_TABLE(usb, id_table); static struct usb_serial_driver kl5kusb105d_device = { .driver = { - .owner = THIS_MODULE, .name = "kl5kusb105d", }, .description = "KL5KUSB105D / PalmConnect", diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index 5e775f68fcb8..5eb59ac3e564 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -77,7 +77,6 @@ MODULE_DEVICE_TABLE(usb, id_table); static struct usb_serial_driver kobil_device = { .driver = { - .owner = THIS_MODULE, .name = "kobil", }, .description = "KOBIL USB smart card terminal", diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c index 6570c8817a80..e5a139ed5d90 100644 --- a/drivers/usb/serial/mct_u232.c +++ b/drivers/usb/serial/mct_u232.c @@ -69,7 +69,6 @@ MODULE_DEVICE_TABLE(usb, id_table); static struct usb_serial_driver mct_u232_device = { .driver = { - .owner = THIS_MODULE, .name = "mct_u232", }, .description = "MCT U232", diff --git a/drivers/usb/serial/metro-usb.c b/drivers/usb/serial/metro-usb.c index 30ab565e0738..028878292901 100644 --- a/drivers/usb/serial/metro-usb.c +++ b/drivers/usb/serial/metro-usb.c @@ -341,7 +341,6 @@ static void metrousb_unthrottle(struct tty_struct *tty) static struct usb_serial_driver metrousb_device = { .driver = { - .owner = THIS_MODULE, .name = "metro-usb", }, .description = "Metrologic USB to Serial", diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 23544074eb1c..e59bfa7c8030 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1724,7 +1724,6 @@ static void mos7720_port_remove(struct usb_serial_port *port) static struct usb_serial_driver moschip7720_2port_driver = { .driver = { - .owner = THIS_MODULE, .name = "moschip7720", }, .description = "Moschip 2 port adapter", diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 85697466b147..ca3da79afd23 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -1782,7 +1782,6 @@ static int mos7840_resume(struct usb_serial *serial) static struct usb_serial_driver moschip7840_4port_device = { .driver = { - .owner = THIS_MODULE, .name = "mos7840", }, .description = DRIVER_DESC, diff --git a/drivers/usb/serial/mxuport.c b/drivers/usb/serial/mxuport.c index 942cb0153423..57e4f2b215d8 100644 --- a/drivers/usb/serial/mxuport.c +++ b/drivers/usb/serial/mxuport.c @@ -1278,7 +1278,6 @@ static int mxuport_resume(struct usb_serial *serial) static struct usb_serial_driver mxuport_device = { .driver = { - .owner = THIS_MODULE, .name = "mxuport", }, .description = "MOXA UPort", diff --git a/drivers/usb/serial/navman.c b/drivers/usb/serial/navman.c index 82791fd67c46..4d57a5902292 100644 --- a/drivers/usb/serial/navman.c +++ b/drivers/usb/serial/navman.c @@ -95,7 +95,6 @@ static int navman_write(struct tty_struct *tty, struct usb_serial_port *port, static struct usb_serial_driver navman_device = { .driver = { - .owner = THIS_MODULE, .name = "navman", }, .id_table = id_table, diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c index 41f1b872d277..397ebd5a3e74 100644 --- a/drivers/usb/serial/omninet.c +++ b/drivers/usb/serial/omninet.c @@ -49,7 +49,6 @@ MODULE_DEVICE_TABLE(usb, id_table); static struct usb_serial_driver zyxel_omninet_device = { .driver = { - .owner = THIS_MODULE, .name = "omninet", }, .description = "ZyXEL - omni.net usb", diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c index e31a6d77da3a..1ee84ccc4bbd 100644 --- a/drivers/usb/serial/opticon.c +++ b/drivers/usb/serial/opticon.c @@ -375,7 +375,6 @@ static void opticon_port_remove(struct usb_serial_port *port) static struct usb_serial_driver opticon_device = { .driver = { - .owner = THIS_MODULE, .name = "opticon", }, .id_table = id_table, diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 311040f9b935..5972fd579780 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -2376,7 +2376,6 @@ MODULE_DEVICE_TABLE(usb, option_ids); static struct usb_serial_driver option_1port_device = { .driver = { - .owner = THIS_MODULE, .name = "option1", }, .description = "GSM modem (1-port)", diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c index fa07f6ff9ecc..24068368892c 100644 --- a/drivers/usb/serial/oti6858.c +++ b/drivers/usb/serial/oti6858.c @@ -138,7 +138,6 @@ static void oti6858_port_remove(struct usb_serial_port *port); /* device info */ static struct usb_serial_driver oti6858_device = { .driver = { - .owner = THIS_MODULE, .name = "oti6858", }, .id_table = id_table, diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index d93f5d584557..9e3b524a2e7b 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -1234,7 +1234,6 @@ static void pl2303_process_read_urb(struct urb *urb) static struct usb_serial_driver pl2303_device = { .driver = { - .owner = THIS_MODULE, .name = "pl2303", }, .id_table = id_table, diff --git a/drivers/usb/serial/qcaux.c b/drivers/usb/serial/qcaux.c index 015bb7c5d19d..485ec5b07122 100644 --- a/drivers/usb/serial/qcaux.c +++ b/drivers/usb/serial/qcaux.c @@ -72,7 +72,6 @@ MODULE_DEVICE_TABLE(usb, id_table); static struct usb_serial_driver qcaux_device = { .driver = { - .owner = THIS_MODULE, .name = "qcaux", }, .id_table = id_table, diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c index 703a9c563557..c7de9585feb2 100644 --- a/drivers/usb/serial/qcserial.c +++ b/drivers/usb/serial/qcserial.c @@ -454,7 +454,6 @@ static void qc_release(struct usb_serial *serial) static struct usb_serial_driver qcdevice = { .driver = { - .owner = THIS_MODULE, .name = "qcserial", }, .description = "Qualcomm USB modem", diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index 821f25e52ec2..4167a45d1be3 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -924,7 +924,6 @@ write_out: static struct usb_serial_driver qt2_device = { .driver = { - .owner = THIS_MODULE, .name = "quatech-serial", }, .description = DRIVER_DESC, diff --git a/drivers/usb/serial/safe_serial.c b/drivers/usb/serial/safe_serial.c index 6accbecb6318..238b54993446 100644 --- a/drivers/usb/serial/safe_serial.c +++ b/drivers/usb/serial/safe_serial.c @@ -284,7 +284,6 @@ static int safe_startup(struct usb_serial *serial) static struct usb_serial_driver safe_device = { .driver = { - .owner = THIS_MODULE, .name = "safe_serial", }, .id_table = id_table, diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index 353b2549eaa8..64a2e0bb5723 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -1021,7 +1021,6 @@ static int sierra_resume(struct usb_serial *serial) static struct usb_serial_driver sierra_device = { .driver = { - .owner = THIS_MODULE, .name = "sierra", }, .description = "Sierra USB modem", diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index 6b294bf8bc43..11077beb7232 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -452,7 +452,6 @@ static int spcp8x5_tiocmget(struct tty_struct *tty) static struct usb_serial_driver spcp8x5_device = { .driver = { - .owner = THIS_MODULE, .name = "SPCP8x5", }, .id_table = id_table, diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c index 1e1888b66305..df21009bdf42 100644 --- a/drivers/usb/serial/ssu100.c +++ b/drivers/usb/serial/ssu100.c @@ -500,7 +500,6 @@ static void ssu100_process_read_urb(struct urb *urb) static struct usb_serial_driver ssu100_device = { .driver = { - .owner = THIS_MODULE, .name = "ssu100", }, .description = DRIVER_DESC, diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c index 9aabb087f733..58962bcbf9ba 100644 --- a/drivers/usb/serial/symbolserial.c +++ b/drivers/usb/serial/symbolserial.c @@ -169,7 +169,6 @@ static void symbol_port_remove(struct usb_serial_port *port) static struct usb_serial_driver symbol_device = { .driver = { - .owner = THIS_MODULE, .name = "symbol", }, .id_table = id_table, diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index 0fba25abf671..a0c244bc77c0 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -417,7 +417,6 @@ static const struct usb_device_id ti_id_table_combined[] = { static struct usb_serial_driver ti_1port_device = { .driver = { - .owner = THIS_MODULE, .name = "ti_usb_3410_5052_1", }, .description = "TI USB 3410 1 port adapter", @@ -450,7 +449,6 @@ static struct usb_serial_driver ti_1port_device = { static struct usb_serial_driver ti_2port_device = { .driver = { - .owner = THIS_MODULE, .name = "ti_usb_3410_5052_2", }, .description = "TI USB 5052 2 port adapter", diff --git a/drivers/usb/serial/upd78f0730.c b/drivers/usb/serial/upd78f0730.c index 46952182e04f..15a17bf111f1 100644 --- a/drivers/usb/serial/upd78f0730.c +++ b/drivers/usb/serial/upd78f0730.c @@ -407,7 +407,6 @@ static void upd78f0730_close(struct usb_serial_port *port) static struct usb_serial_driver upd78f0730_device = { .driver = { - .owner = THIS_MODULE, .name = "upd78f0730", }, .id_table = id_table, diff --git a/drivers/usb/serial/usb-serial-simple.c b/drivers/usb/serial/usb-serial-simple.c index 82f4f0b992aa..2c12449ff60c 100644 --- a/drivers/usb/serial/usb-serial-simple.c +++ b/drivers/usb/serial/usb-serial-simple.c @@ -24,7 +24,6 @@ static const struct usb_device_id vendor##_id_table[] = { \ }; \ static struct usb_serial_driver vendor##_device = { \ .driver = { \ - .owner = THIS_MODULE, \ .name = #vendor, \ }, \ .id_table = vendor##_id_table, \ diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c index 61a8425b7762..ec9fff794b36 100644 --- a/drivers/usb/serial/usb_debug.c +++ b/drivers/usb/serial/usb_debug.c @@ -83,7 +83,6 @@ static void usb_debug_init_termios(struct tty_struct *tty) static struct usb_serial_driver debug_device = { .driver = { - .owner = THIS_MODULE, .name = "debug", }, .id_table = id_table, @@ -96,7 +95,6 @@ static struct usb_serial_driver debug_device = { static struct usb_serial_driver dbc_device = { .driver = { - .owner = THIS_MODULE, .name = "xhci_dbc", }, .id_table = dbc_id_table, diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index 4412834db21c..062a38fe0c1c 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -161,7 +161,6 @@ MODULE_DEVICE_TABLE(usb, id_table_combined); and Palm 4.0 devices */ static struct usb_serial_driver handspring_device = { .driver = { - .owner = THIS_MODULE, .name = "visor", }, .description = "Handspring Visor / Palm OS", @@ -180,7 +179,6 @@ static struct usb_serial_driver handspring_device = { /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */ static struct usb_serial_driver clie_5_device = { .driver = { - .owner = THIS_MODULE, .name = "clie_5", }, .description = "Sony Clie 5.0", @@ -200,7 +198,6 @@ static struct usb_serial_driver clie_5_device = { /* device info for the Sony Clie OS version 3.5 */ static struct usb_serial_driver clie_3_5_device = { .driver = { - .owner = THIS_MODULE, .name = "clie_3.5", }, .description = "Sony Clie 3.5", diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c index ca48e90a8e81..009faeb2ef55 100644 --- a/drivers/usb/serial/whiteheat.c +++ b/drivers/usb/serial/whiteheat.c @@ -91,7 +91,6 @@ static int whiteheat_break_ctl(struct tty_struct *tty, int break_state); static struct usb_serial_driver whiteheat_fake_device = { .driver = { - .owner = THIS_MODULE, .name = "whiteheatnofirm", }, .description = "Connect Tech - WhiteHEAT - (prerenumeration)", @@ -103,7 +102,6 @@ static struct usb_serial_driver whiteheat_fake_device = { static struct usb_serial_driver whiteheat_device = { .driver = { - .owner = THIS_MODULE, .name = "whiteheat", }, .description = "Connect Tech - WhiteHEAT", diff --git a/drivers/usb/serial/wishbone-serial.c b/drivers/usb/serial/wishbone-serial.c index ff4092f9b33c..670d573f6b63 100644 --- a/drivers/usb/serial/wishbone-serial.c +++ b/drivers/usb/serial/wishbone-serial.c @@ -70,7 +70,6 @@ static void wishbone_serial_close(struct usb_serial_port *port) static struct usb_serial_driver wishbone_serial_device = { .driver = { - .owner = THIS_MODULE, .name = "wishbone_serial", }, .id_table = id_table, diff --git a/drivers/usb/serial/xr_serial.c b/drivers/usb/serial/xr_serial.c index 1d9a12628f81..4186e791b384 100644 --- a/drivers/usb/serial/xr_serial.c +++ b/drivers/usb/serial/xr_serial.c @@ -1082,7 +1082,6 @@ MODULE_DEVICE_TABLE(usb, id_table); static struct usb_serial_driver xr_device = { .driver = { - .owner = THIS_MODULE, .name = "xr_serial", }, .id_table = id_table, diff --git a/drivers/usb/serial/xsens_mt.c b/drivers/usb/serial/xsens_mt.c index cf262c9a9638..382b3698c1d5 100644 --- a/drivers/usb/serial/xsens_mt.c +++ b/drivers/usb/serial/xsens_mt.c @@ -49,7 +49,6 @@ static int xsens_mt_probe(struct usb_serial *serial, static struct usb_serial_driver xsens_mt_device = { .driver = { - .owner = THIS_MODULE, .name = "xsens_mt", }, .id_table = id_table, From 4c0d9477ba69a417c698aec1d3012e188cf97add Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 31 Jul 2024 15:28:48 +0200 Subject: [PATCH 074/145] USB: serial: kobil_sct: restore initial terminal settings Commit 6a6c8b362be3 ("usb, kobil: Sort out some bogus tty handling") intended to fix and clean up the device-specific initial terminal settings but instead confused the termios input and local control flags and re-enabled ICRNL and IXON. Drop the bogus masking of l-flags from the default i-flags (which has no effect) and restore the original device-specific i-flags. Fixes: 6a6c8b362be3 ("usb, kobil: Sort out some bogus tty handling") Signed-off-by: Johan Hovold --- drivers/usb/serial/kobil_sct.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index 5eb59ac3e564..464433be2034 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -155,8 +155,7 @@ static void kobil_init_termios(struct tty_struct *tty) { /* Default to echo off and other sane device settings */ tty->termios.c_lflag = 0; - tty->termios.c_iflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE); - tty->termios.c_iflag |= IGNBRK | IGNPAR | IXOFF; + tty->termios.c_iflag = IGNBRK | IGNPAR | IXOFF; /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */ tty->termios.c_oflag &= ~ONLCR; } From e4fdcc10092fb244218013bfe8ff01c55d54e8e4 Mon Sep 17 00:00:00 2001 From: Xu Yang Date: Fri, 23 Aug 2024 15:38:32 +0800 Subject: [PATCH 075/145] usb: chipidea: udc: enable suspend interrupt after usb reset Currently, suspend interrupt is enabled before pullup enable operation. This will cause a suspend interrupt assert right after pullup DP. This suspend interrupt is meaningless, so this will ignore such interrupt by enable it after usb reset completed. Signed-off-by: Xu Yang Acked-by: Peter Chen Link: https://lore.kernel.org/r/20240823073832.1702135-1-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/udc.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 2d7f616270c1..69ef3cd8d4f8 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -86,7 +86,7 @@ static int hw_device_state(struct ci_hdrc *ci, u32 dma) hw_write(ci, OP_ENDPTLISTADDR, ~0, dma); /* interrupt, error, port change, reset, sleep/suspend */ hw_write(ci, OP_USBINTR, ~0, - USBi_UI|USBi_UEI|USBi_PCI|USBi_URI|USBi_SLI); + USBi_UI|USBi_UEI|USBi_PCI|USBi_URI); } else { hw_write(ci, OP_USBINTR, ~0, 0); } @@ -877,6 +877,7 @@ __releases(ci->lock) __acquires(ci->lock) { int retval; + u32 intr; spin_unlock(&ci->lock); if (ci->gadget.speed != USB_SPEED_UNKNOWN) @@ -890,6 +891,11 @@ __acquires(ci->lock) if (retval) goto done; + /* clear SLI */ + hw_write(ci, OP_USBSTS, USBi_SLI, USBi_SLI); + intr = hw_read(ci, OP_USBINTR, ~0); + hw_write(ci, OP_USBINTR, ~0, intr | USBi_SLI); + ci->status = usb_ep_alloc_request(&ci->ep0in->ep, GFP_ATOMIC); if (ci->status == NULL) retval = -ENOMEM; From dbf0fa1c8d47914c3b4919f01b131e0523f6d804 Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Sat, 24 Aug 2024 15:47:07 +0200 Subject: [PATCH 076/145] usb-storage: Constify struct usb_device_id and us_unusual_dev 'struct usb_device_id' and 'struct us_unusual_dev' are not modified in these drivers. Constifying these structures moves some data to a read-only section, so increase overall security, especially when the structure holds some function pointers (which is the case for struct us_unusual_dev). On a x86_64, with allmodconfig, as an example: Before: ====== text data bss dec hex filename 25249 4261 896 30406 76c6 drivers/usb/storage/alauda.o 3969 672 360 5001 1389 drivers/usb/storage/cypress_atacb.o After: ===== text data bss dec hex filename 25461 4041 896 30398 76be drivers/usb/storage/alauda.o 4225 400 360 4985 1379 drivers/usb/storage/cypress_atacb.o Signed-off-by: Christophe JAILLET Acked-by: Alan Stern Link: https://lore.kernel.org/r/b1b75a2a64b1f6cfad2a611f71393f281178fd3f.1724507157.git.christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/alauda.c | 4 ++-- drivers/usb/storage/cypress_atacb.c | 4 ++-- drivers/usb/storage/datafab.c | 4 ++-- drivers/usb/storage/ene_ub6250.c | 4 ++-- drivers/usb/storage/freecom.c | 4 ++-- drivers/usb/storage/isd200.c | 4 ++-- drivers/usb/storage/jumpshot.c | 4 ++-- drivers/usb/storage/karma.c | 4 ++-- drivers/usb/storage/onetouch.c | 4 ++-- drivers/usb/storage/sddr09.c | 4 ++-- drivers/usb/storage/sddr55.c | 4 ++-- drivers/usb/storage/shuttle_usbat.c | 4 ++-- drivers/usb/storage/uas.c | 2 +- 13 files changed, 25 insertions(+), 25 deletions(-) diff --git a/drivers/usb/storage/alauda.c b/drivers/usb/storage/alauda.c index 40d34cc28344..a9d3c58ce7d9 100644 --- a/drivers/usb/storage/alauda.c +++ b/drivers/usb/storage/alauda.c @@ -132,7 +132,7 @@ static int init_alauda(struct us_data *us); { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } -static struct usb_device_id alauda_usb_ids[] = { +static const struct usb_device_id alauda_usb_ids[] = { # include "unusual_alauda.h" { } /* Terminating entry */ }; @@ -154,7 +154,7 @@ MODULE_DEVICE_TABLE(usb, alauda_usb_ids); .initFunction = init_function, \ } -static struct us_unusual_dev alauda_unusual_dev_list[] = { +static const struct us_unusual_dev alauda_unusual_dev_list[] = { # include "unusual_alauda.h" { } /* Terminating entry */ }; diff --git a/drivers/usb/storage/cypress_atacb.c b/drivers/usb/storage/cypress_atacb.c index 98b3ec352a13..30dfd0082474 100644 --- a/drivers/usb/storage/cypress_atacb.c +++ b/drivers/usb/storage/cypress_atacb.c @@ -33,7 +33,7 @@ MODULE_IMPORT_NS(USB_STORAGE); { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } -static struct usb_device_id cypress_usb_ids[] = { +static const struct usb_device_id cypress_usb_ids[] = { # include "unusual_cypress.h" { } /* Terminating entry */ }; @@ -55,7 +55,7 @@ MODULE_DEVICE_TABLE(usb, cypress_usb_ids); .initFunction = init_function, \ } -static struct us_unusual_dev cypress_unusual_dev_list[] = { +static const struct us_unusual_dev cypress_unusual_dev_list[] = { # include "unusual_cypress.h" { } /* Terminating entry */ }; diff --git a/drivers/usb/storage/datafab.c b/drivers/usb/storage/datafab.c index bcc4a2fad863..3ea5601d16b8 100644 --- a/drivers/usb/storage/datafab.c +++ b/drivers/usb/storage/datafab.c @@ -80,7 +80,7 @@ static int datafab_determine_lun(struct us_data *us, { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } -static struct usb_device_id datafab_usb_ids[] = { +static const struct usb_device_id datafab_usb_ids[] = { # include "unusual_datafab.h" { } /* Terminating entry */ }; @@ -102,7 +102,7 @@ MODULE_DEVICE_TABLE(usb, datafab_usb_ids); .initFunction = init_function, \ } -static struct us_unusual_dev datafab_unusual_dev_list[] = { +static const struct us_unusual_dev datafab_unusual_dev_list[] = { # include "unusual_datafab.h" { } /* Terminating entry */ }; diff --git a/drivers/usb/storage/ene_ub6250.c b/drivers/usb/storage/ene_ub6250.c index 97c66c0d91f4..73dd276ce59c 100644 --- a/drivers/usb/storage/ene_ub6250.c +++ b/drivers/usb/storage/ene_ub6250.c @@ -43,7 +43,7 @@ MODULE_FIRMWARE(MS_RW_FIRMWARE); { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags)} -static struct usb_device_id ene_ub6250_usb_ids[] = { +static const struct usb_device_id ene_ub6250_usb_ids[] = { # include "unusual_ene_ub6250.h" { } /* Terminating entry */ }; @@ -65,7 +65,7 @@ MODULE_DEVICE_TABLE(usb, ene_ub6250_usb_ids); .initFunction = init_function, \ } -static struct us_unusual_dev ene_ub6250_unusual_dev_list[] = { +static const struct us_unusual_dev ene_ub6250_unusual_dev_list[] = { # include "unusual_ene_ub6250.h" { } /* Terminating entry */ }; diff --git a/drivers/usb/storage/freecom.c b/drivers/usb/storage/freecom.c index c3ce51c2dabd..cab27ba7a32a 100644 --- a/drivers/usb/storage/freecom.c +++ b/drivers/usb/storage/freecom.c @@ -119,7 +119,7 @@ static int init_freecom(struct us_data *us); { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } -static struct usb_device_id freecom_usb_ids[] = { +static const struct usb_device_id freecom_usb_ids[] = { # include "unusual_freecom.h" { } /* Terminating entry */ }; @@ -141,7 +141,7 @@ MODULE_DEVICE_TABLE(usb, freecom_usb_ids); .initFunction = init_function, \ } -static struct us_unusual_dev freecom_unusual_dev_list[] = { +static const struct us_unusual_dev freecom_unusual_dev_list[] = { # include "unusual_freecom.h" { } /* Terminating entry */ }; diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c index 300aeef160e7..f2254eb3c0d7 100644 --- a/drivers/usb/storage/isd200.c +++ b/drivers/usb/storage/isd200.c @@ -67,7 +67,7 @@ static int isd200_Initialization(struct us_data *us); { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } -static struct usb_device_id isd200_usb_ids[] = { +static const struct usb_device_id isd200_usb_ids[] = { # include "unusual_isd200.h" { } /* Terminating entry */ }; @@ -89,7 +89,7 @@ MODULE_DEVICE_TABLE(usb, isd200_usb_ids); .initFunction = init_function, \ } -static struct us_unusual_dev isd200_unusual_dev_list[] = { +static const struct us_unusual_dev isd200_unusual_dev_list[] = { # include "unusual_isd200.h" { } /* Terminating entry */ }; diff --git a/drivers/usb/storage/jumpshot.c b/drivers/usb/storage/jumpshot.c index 229bf0c1afc9..0e71a8f33c2b 100644 --- a/drivers/usb/storage/jumpshot.c +++ b/drivers/usb/storage/jumpshot.c @@ -62,7 +62,7 @@ MODULE_IMPORT_NS(USB_STORAGE); { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } -static struct usb_device_id jumpshot_usb_ids[] = { +static const struct usb_device_id jumpshot_usb_ids[] = { # include "unusual_jumpshot.h" { } /* Terminating entry */ }; @@ -84,7 +84,7 @@ MODULE_DEVICE_TABLE(usb, jumpshot_usb_ids); .initFunction = init_function, \ } -static struct us_unusual_dev jumpshot_unusual_dev_list[] = { +static const struct us_unusual_dev jumpshot_unusual_dev_list[] = { # include "unusual_jumpshot.h" { } /* Terminating entry */ }; diff --git a/drivers/usb/storage/karma.c b/drivers/usb/storage/karma.c index 38ddfedef629..d6a5e54f2ca8 100644 --- a/drivers/usb/storage/karma.c +++ b/drivers/usb/storage/karma.c @@ -51,7 +51,7 @@ static int rio_karma_init(struct us_data *us); { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } -static struct usb_device_id karma_usb_ids[] = { +static const struct usb_device_id karma_usb_ids[] = { # include "unusual_karma.h" { } /* Terminating entry */ }; @@ -73,7 +73,7 @@ MODULE_DEVICE_TABLE(usb, karma_usb_ids); .initFunction = init_function, \ } -static struct us_unusual_dev karma_unusual_dev_list[] = { +static const struct us_unusual_dev karma_unusual_dev_list[] = { # include "unusual_karma.h" { } /* Terminating entry */ }; diff --git a/drivers/usb/storage/onetouch.c b/drivers/usb/storage/onetouch.c index 01f3c2779ccf..f97cf6cadb8e 100644 --- a/drivers/usb/storage/onetouch.c +++ b/drivers/usb/storage/onetouch.c @@ -55,7 +55,7 @@ struct usb_onetouch { { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } -static struct usb_device_id onetouch_usb_ids[] = { +static const struct usb_device_id onetouch_usb_ids[] = { # include "unusual_onetouch.h" { } /* Terminating entry */ }; @@ -77,7 +77,7 @@ MODULE_DEVICE_TABLE(usb, onetouch_usb_ids); .initFunction = init_function, \ } -static struct us_unusual_dev onetouch_unusual_dev_list[] = { +static const struct us_unusual_dev onetouch_unusual_dev_list[] = { # include "unusual_onetouch.h" { } /* Terminating entry */ }; diff --git a/drivers/usb/storage/sddr09.c b/drivers/usb/storage/sddr09.c index 51bcd4a43690..03d1b9c69ea1 100644 --- a/drivers/usb/storage/sddr09.c +++ b/drivers/usb/storage/sddr09.c @@ -63,7 +63,7 @@ static int usb_stor_sddr09_init(struct us_data *us); { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } -static struct usb_device_id sddr09_usb_ids[] = { +static const struct usb_device_id sddr09_usb_ids[] = { # include "unusual_sddr09.h" { } /* Terminating entry */ }; @@ -85,7 +85,7 @@ MODULE_DEVICE_TABLE(usb, sddr09_usb_ids); .initFunction = init_function, \ } -static struct us_unusual_dev sddr09_unusual_dev_list[] = { +static const struct us_unusual_dev sddr09_unusual_dev_list[] = { # include "unusual_sddr09.h" { } /* Terminating entry */ }; diff --git a/drivers/usb/storage/sddr55.c b/drivers/usb/storage/sddr55.c index 0aa079405d23..b8227478a7ad 100644 --- a/drivers/usb/storage/sddr55.c +++ b/drivers/usb/storage/sddr55.c @@ -40,7 +40,7 @@ MODULE_IMPORT_NS(USB_STORAGE); { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } -static struct usb_device_id sddr55_usb_ids[] = { +static const struct usb_device_id sddr55_usb_ids[] = { # include "unusual_sddr55.h" { } /* Terminating entry */ }; @@ -62,7 +62,7 @@ MODULE_DEVICE_TABLE(usb, sddr55_usb_ids); .initFunction = init_function, \ } -static struct us_unusual_dev sddr55_unusual_dev_list[] = { +static const struct us_unusual_dev sddr55_unusual_dev_list[] = { # include "unusual_sddr55.h" { } /* Terminating entry */ }; diff --git a/drivers/usb/storage/shuttle_usbat.c b/drivers/usb/storage/shuttle_usbat.c index f0d0ca37163d..e7c224b7c464 100644 --- a/drivers/usb/storage/shuttle_usbat.c +++ b/drivers/usb/storage/shuttle_usbat.c @@ -162,7 +162,7 @@ static int init_usbat_flash(struct us_data *us); { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } -static struct usb_device_id usbat_usb_ids[] = { +static const struct usb_device_id usbat_usb_ids[] = { # include "unusual_usbat.h" { } /* Terminating entry */ }; @@ -184,7 +184,7 @@ MODULE_DEVICE_TABLE(usb, usbat_usb_ids); .initFunction = init_function, \ } -static struct us_unusual_dev usbat_unusual_dev_list[] = { +static const struct us_unusual_dev usbat_unusual_dev_list[] = { # include "unusual_usbat.h" { } /* Terminating entry */ }; diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index c223b4dc1b19..03043d567fa1 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -927,7 +927,7 @@ static const struct scsi_host_template uas_host_template = { { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } -static struct usb_device_id uas_usb_ids[] = { +static const struct usb_device_id uas_usb_ids[] = { # include "unusual_uas.h" { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, USB_PR_BULK) }, { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, USB_PR_UAS) }, From bde053252c02186836ea0d1bee492d2e95c3f983 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 12:35:37 +0200 Subject: [PATCH 077/145] usb: dwc3: st: use scoped device node handling to simplify error paths Obtain the device node reference with scoped/cleanup.h to reduce error handling and make the code a bit simpler. Scoped/cleanup.h coding style expects variable declaration with initialization, so the of_get_compatible_child() call has to be moved earlier, before any goto jumps happen. Signed-off-by: Krzysztof Kozlowski Acked-by: Thinh Nguyen Reviewed-by: Patrice Chotard Link: https://lore.kernel.org/r/20240814-b4-cleanup-h-of-node-put-usb-v1-1-95481b9682bc@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-st.c | 25 +++++++++++-------------- 1 file changed, 11 insertions(+), 14 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c index c8c7cd0c1796..98f43d7082d7 100644 --- a/drivers/usb/dwc3/dwc3-st.c +++ b/drivers/usb/dwc3/dwc3-st.c @@ -14,6 +14,7 @@ * Inspired by dwc3-omap.c and dwc3-exynos.c. */ +#include #include #include #include @@ -197,7 +198,7 @@ static int st_dwc3_probe(struct platform_device *pdev) struct st_dwc3 *dwc3_data; struct resource *res; struct device *dev = &pdev->dev; - struct device_node *node = dev->of_node, *child; + struct device_node *node = dev->of_node; struct platform_device *child_pdev; struct regmap *regmap; int ret; @@ -227,6 +228,13 @@ static int st_dwc3_probe(struct platform_device *pdev) dev_vdbg(&pdev->dev, "glue-logic addr 0x%pK, syscfg-reg offset 0x%x\n", dwc3_data->glue_base, dwc3_data->syscfg_reg_off); + struct device_node *child __free(device_node) = of_get_compatible_child(node, + "snps,dwc3"); + if (!child) { + dev_err(&pdev->dev, "failed to find dwc3 core node\n"); + return -ENODEV; + } + dwc3_data->rstc_pwrdn = devm_reset_control_get_exclusive(dev, "powerdown"); if (IS_ERR(dwc3_data->rstc_pwrdn)) { @@ -248,18 +256,11 @@ static int st_dwc3_probe(struct platform_device *pdev) /* Manage SoftReset */ reset_control_deassert(dwc3_data->rstc_rst); - child = of_get_compatible_child(node, "snps,dwc3"); - if (!child) { - dev_err(&pdev->dev, "failed to find dwc3 core node\n"); - ret = -ENODEV; - goto err_node_put; - } - /* Allocate and initialize the core */ ret = of_platform_populate(node, NULL, NULL, dev); if (ret) { dev_err(dev, "failed to add dwc3 core\n"); - goto err_node_put; + goto undo_softreset; } child_pdev = of_find_device_by_node(child); @@ -270,7 +271,6 @@ static int st_dwc3_probe(struct platform_device *pdev) } dwc3_data->dr_mode = usb_get_dr_mode(&child_pdev->dev); - of_node_put(child); platform_device_put(child_pdev); /* @@ -282,8 +282,7 @@ static int st_dwc3_probe(struct platform_device *pdev) ret = st_dwc3_drd_init(dwc3_data); if (ret) { dev_err(dev, "drd initialisation failed\n"); - of_platform_depopulate(dev); - goto undo_softreset; + goto depopulate; } /* ST glue logic init */ @@ -294,8 +293,6 @@ static int st_dwc3_probe(struct platform_device *pdev) depopulate: of_platform_depopulate(dev); -err_node_put: - of_node_put(child); undo_softreset: reset_control_assert(dwc3_data->rstc_rst); undo_powerdown: From a93c3ad6a9b2f9b8add42cc07e8857bab0eb1616 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 12:35:38 +0200 Subject: [PATCH 078/145] usb: dwc3: st: simplify with dev_err_probe Use dev_err_probe() to make the error paths a bit simpler. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Patrice Chotard Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/20240814-b4-cleanup-h-of-node-put-usb-v1-2-95481b9682bc@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-st.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c index 98f43d7082d7..7a0b1821768a 100644 --- a/drivers/usb/dwc3/dwc3-st.c +++ b/drivers/usb/dwc3/dwc3-st.c @@ -237,10 +237,9 @@ static int st_dwc3_probe(struct platform_device *pdev) dwc3_data->rstc_pwrdn = devm_reset_control_get_exclusive(dev, "powerdown"); - if (IS_ERR(dwc3_data->rstc_pwrdn)) { - dev_err(&pdev->dev, "could not get power controller\n"); - return PTR_ERR(dwc3_data->rstc_pwrdn); - } + if (IS_ERR(dwc3_data->rstc_pwrdn)) + return dev_err_probe(dev, PTR_ERR(dwc3_data->rstc_pwrdn), + "could not get power controller\n"); /* Manage PowerDown */ reset_control_deassert(dwc3_data->rstc_pwrdn); @@ -248,8 +247,8 @@ static int st_dwc3_probe(struct platform_device *pdev) dwc3_data->rstc_rst = devm_reset_control_get_shared(dev, "softreset"); if (IS_ERR(dwc3_data->rstc_rst)) { - dev_err(&pdev->dev, "could not get reset controller\n"); - ret = PTR_ERR(dwc3_data->rstc_rst); + ret = dev_err_probe(dev, PTR_ERR(dwc3_data->rstc_rst), + "could not get reset controller\n"); goto undo_powerdown; } From fcc78cce2f9653af6d46460274d352e8b26ac5ea Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 12:35:39 +0200 Subject: [PATCH 079/145] usb: dwc3: st: simplify pdev->dev usage The probe() function already stores '&pdev->dev' in local 'dev' variable. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Patrice Chotard Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/20240814-b4-cleanup-h-of-node-put-usb-v1-3-95481b9682bc@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-st.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c index 7a0b1821768a..2841021f3557 100644 --- a/drivers/usb/dwc3/dwc3-st.c +++ b/drivers/usb/dwc3/dwc3-st.c @@ -225,13 +225,13 @@ static int st_dwc3_probe(struct platform_device *pdev) dwc3_data->syscfg_reg_off = res->start; - dev_vdbg(&pdev->dev, "glue-logic addr 0x%pK, syscfg-reg offset 0x%x\n", + dev_vdbg(dev, "glue-logic addr 0x%pK, syscfg-reg offset 0x%x\n", dwc3_data->glue_base, dwc3_data->syscfg_reg_off); struct device_node *child __free(device_node) = of_get_compatible_child(node, "snps,dwc3"); if (!child) { - dev_err(&pdev->dev, "failed to find dwc3 core node\n"); + dev_err(dev, "failed to find dwc3 core node\n"); return -ENODEV; } From 3fdfebc58e0ddd86f5c0da85ef5eab94bf3d674a Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 12:35:40 +0200 Subject: [PATCH 080/145] usb: dwc3: imx8mp: simplify with devm_clk_get_enabled Use devm_clk_get_enabled() to drop clock preparing and handling from error and remove paths. This makes the code a bit simpler. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Frank Li Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/20240814-b4-cleanup-h-of-node-put-usb-v1-4-95481b9682bc@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-imx8mp.c | 32 +++++--------------------------- 1 file changed, 5 insertions(+), 27 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-imx8mp.c b/drivers/usb/dwc3/dwc3-imx8mp.c index 392fa1232788..8c91e595d3b9 100644 --- a/drivers/usb/dwc3/dwc3-imx8mp.c +++ b/drivers/usb/dwc3/dwc3-imx8mp.c @@ -178,37 +178,23 @@ static int dwc3_imx8mp_probe(struct platform_device *pdev) return PTR_ERR(dwc3_imx->glue_base); } - dwc3_imx->hsio_clk = devm_clk_get(dev, "hsio"); + dwc3_imx->hsio_clk = devm_clk_get_enabled(dev, "hsio"); if (IS_ERR(dwc3_imx->hsio_clk)) { err = PTR_ERR(dwc3_imx->hsio_clk); dev_err(dev, "Failed to get hsio clk, err=%d\n", err); return err; } - err = clk_prepare_enable(dwc3_imx->hsio_clk); - if (err) { - dev_err(dev, "Failed to enable hsio clk, err=%d\n", err); - return err; - } - - dwc3_imx->suspend_clk = devm_clk_get(dev, "suspend"); + dwc3_imx->suspend_clk = devm_clk_get_enabled(dev, "suspend"); if (IS_ERR(dwc3_imx->suspend_clk)) { err = PTR_ERR(dwc3_imx->suspend_clk); dev_err(dev, "Failed to get suspend clk, err=%d\n", err); - goto disable_hsio_clk; - } - - err = clk_prepare_enable(dwc3_imx->suspend_clk); - if (err) { - dev_err(dev, "Failed to enable suspend clk, err=%d\n", err); - goto disable_hsio_clk; + return err; } irq = platform_get_irq(pdev, 0); - if (irq < 0) { - err = irq; - goto disable_clks; - } + if (irq < 0) + return irq; dwc3_imx->irq = irq; imx8mp_configure_glue(dwc3_imx); @@ -259,25 +245,17 @@ err_node_put: disable_rpm: pm_runtime_disable(dev); pm_runtime_put_noidle(dev); -disable_clks: - clk_disable_unprepare(dwc3_imx->suspend_clk); -disable_hsio_clk: - clk_disable_unprepare(dwc3_imx->hsio_clk); return err; } static void dwc3_imx8mp_remove(struct platform_device *pdev) { - struct dwc3_imx8mp *dwc3_imx = platform_get_drvdata(pdev); struct device *dev = &pdev->dev; pm_runtime_get_sync(dev); of_platform_depopulate(dev); - clk_disable_unprepare(dwc3_imx->suspend_clk); - clk_disable_unprepare(dwc3_imx->hsio_clk); - pm_runtime_disable(dev); pm_runtime_put_noidle(dev); } From 81d905b1022033a5885e2d2c169606eabf669084 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 12:35:41 +0200 Subject: [PATCH 081/145] usb: dwc3: imx8mp: simplify with dev_err_probe Use dev_err_probe() to make the error paths a bit simpler. Signed-off-by: Krzysztof Kozlowski Acked-by: Thinh Nguyen Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20240814-b4-cleanup-h-of-node-put-usb-v1-5-95481b9682bc@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-imx8mp.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-imx8mp.c b/drivers/usb/dwc3/dwc3-imx8mp.c index 8c91e595d3b9..869b5e7c15ed 100644 --- a/drivers/usb/dwc3/dwc3-imx8mp.c +++ b/drivers/usb/dwc3/dwc3-imx8mp.c @@ -179,18 +179,14 @@ static int dwc3_imx8mp_probe(struct platform_device *pdev) } dwc3_imx->hsio_clk = devm_clk_get_enabled(dev, "hsio"); - if (IS_ERR(dwc3_imx->hsio_clk)) { - err = PTR_ERR(dwc3_imx->hsio_clk); - dev_err(dev, "Failed to get hsio clk, err=%d\n", err); - return err; - } + if (IS_ERR(dwc3_imx->hsio_clk)) + return dev_err_probe(dev, PTR_ERR(dwc3_imx->hsio_clk), + "Failed to get hsio clk\n"); dwc3_imx->suspend_clk = devm_clk_get_enabled(dev, "suspend"); - if (IS_ERR(dwc3_imx->suspend_clk)) { - err = PTR_ERR(dwc3_imx->suspend_clk); - dev_err(dev, "Failed to get suspend clk, err=%d\n", err); - return err; - } + if (IS_ERR(dwc3_imx->suspend_clk)) + return dev_err_probe(dev, PTR_ERR(dwc3_imx->suspend_clk), + "Failed to get suspend clk\n"); irq = platform_get_irq(pdev, 0); if (irq < 0) From 34e8df2fb2de4e56fdd91a03ffe466f3c88a67df Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 12:35:42 +0200 Subject: [PATCH 082/145] usb: dwc3: imx8mp: use scoped device node handling to simplify error paths Obtain the device node reference with scoped/cleanup.h to reduce error handling and make the code a bit simpler. Scoped/cleanup.h coding style expects variable declaration with initialization, so the of_get_compatible_child() call has to be moved earlier, before any goto jumps happen. Signed-off-by: Krzysztof Kozlowski Acked-by: Thinh Nguyen Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20240814-b4-cleanup-h-of-node-put-usb-v1-6-95481b9682bc@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-imx8mp.c | 20 ++++++++------------ 1 file changed, 8 insertions(+), 12 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-imx8mp.c b/drivers/usb/dwc3/dwc3-imx8mp.c index 869b5e7c15ed..8b88649b569f 100644 --- a/drivers/usb/dwc3/dwc3-imx8mp.c +++ b/drivers/usb/dwc3/dwc3-imx8mp.c @@ -5,6 +5,7 @@ * Copyright (c) 2020 NXP. */ +#include #include #include #include @@ -147,7 +148,7 @@ static irqreturn_t dwc3_imx8mp_interrupt(int irq, void *_dwc3_imx) static int dwc3_imx8mp_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct device_node *dwc3_np, *node = dev->of_node; + struct device_node *node = dev->of_node; struct dwc3_imx8mp *dwc3_imx; struct resource *res; int err, irq; @@ -193,6 +194,11 @@ static int dwc3_imx8mp_probe(struct platform_device *pdev) return irq; dwc3_imx->irq = irq; + struct device_node *dwc3_np __free(device_node) = of_get_compatible_child(node, + "snps,dwc3"); + if (!dwc3_np) + return dev_err_probe(dev, -ENODEV, "failed to find dwc3 core child\n"); + imx8mp_configure_glue(dwc3_imx); pm_runtime_set_active(dev); @@ -201,17 +207,10 @@ static int dwc3_imx8mp_probe(struct platform_device *pdev) if (err < 0) goto disable_rpm; - dwc3_np = of_get_compatible_child(node, "snps,dwc3"); - if (!dwc3_np) { - err = -ENODEV; - dev_err(dev, "failed to find dwc3 core child\n"); - goto disable_rpm; - } - err = of_platform_populate(node, NULL, NULL, dev); if (err) { dev_err(&pdev->dev, "failed to create dwc3 core\n"); - goto err_node_put; + goto disable_rpm; } dwc3_imx->dwc3 = of_find_device_by_node(dwc3_np); @@ -220,7 +219,6 @@ static int dwc3_imx8mp_probe(struct platform_device *pdev) err = -ENODEV; goto depopulate; } - of_node_put(dwc3_np); err = devm_request_threaded_irq(dev, irq, NULL, dwc3_imx8mp_interrupt, IRQF_ONESHOT, dev_name(dev), dwc3_imx); @@ -236,8 +234,6 @@ static int dwc3_imx8mp_probe(struct platform_device *pdev) depopulate: of_platform_depopulate(dev); -err_node_put: - of_node_put(dwc3_np); disable_rpm: pm_runtime_disable(dev); pm_runtime_put_noidle(dev); From a85f13d509254acd508856be57099a818552cfc9 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 12:35:43 +0200 Subject: [PATCH 083/145] usb: dwc3: qcom: use scoped device node handling to simplify error paths Obtain the device node reference with scoped/cleanup.h to reduce error handling and make the code a bit simpler. Signed-off-by: Krzysztof Kozlowski Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/20240814-b4-cleanup-h-of-node-put-usb-v1-7-95481b9682bc@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-qcom.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 88fb6706a18d..03a8f080078e 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -4,6 +4,7 @@ * Inspired by dwc3-of-simple.c */ +#include #include #include #include @@ -702,11 +703,12 @@ static int dwc3_qcom_clk_init(struct dwc3_qcom *qcom, int count) static int dwc3_qcom_of_register_core(struct platform_device *pdev) { struct dwc3_qcom *qcom = platform_get_drvdata(pdev); - struct device_node *np = pdev->dev.of_node, *dwc3_np; + struct device_node *np = pdev->dev.of_node; struct device *dev = &pdev->dev; int ret; - dwc3_np = of_get_compatible_child(np, "snps,dwc3"); + struct device_node *dwc3_np __free(device_node) = of_get_compatible_child(np, + "snps,dwc3"); if (!dwc3_np) { dev_err(dev, "failed to find dwc3 core child\n"); return -ENODEV; @@ -715,7 +717,7 @@ static int dwc3_qcom_of_register_core(struct platform_device *pdev) ret = of_platform_populate(np, NULL, NULL, dev); if (ret) { dev_err(dev, "failed to register dwc3 core - %d\n", ret); - goto node_put; + return ret; } qcom->dwc3 = of_find_device_by_node(dwc3_np); @@ -725,9 +727,6 @@ static int dwc3_qcom_of_register_core(struct platform_device *pdev) of_platform_depopulate(dev); } -node_put: - of_node_put(dwc3_np); - return ret; } From 17d206a3687ec662b0eb7c1f083fb8abd29842be Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 12:35:44 +0200 Subject: [PATCH 084/145] usb: dwc3: qcom: simplify with devm_platform_ioremap_resource Use devm_platform_ioremap_resource() wrapper instead of two calls. This allows also dropping local 'res' variable. Signed-off-by: Krzysztof Kozlowski Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/20240814-b4-cleanup-h-of-node-put-usb-v1-8-95481b9682bc@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-qcom.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 03a8f080078e..c1d4b52f25b0 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -735,7 +735,6 @@ static int dwc3_qcom_probe(struct platform_device *pdev) struct device_node *np = pdev->dev.of_node; struct device *dev = &pdev->dev; struct dwc3_qcom *qcom; - struct resource *res; int ret, i; bool ignore_pipe_clk; bool wakeup_source; @@ -773,9 +772,7 @@ static int dwc3_qcom_probe(struct platform_device *pdev) goto reset_assert; } - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - - qcom->qscratch_base = devm_ioremap_resource(dev, res); + qcom->qscratch_base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(qcom->qscratch_base)) { ret = PTR_ERR(qcom->qscratch_base); goto clk_disable; From f93e96c544ca723be5c4ff553630ad6a72d3c677 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 12:35:45 +0200 Subject: [PATCH 085/145] usb: dwc3: rtk: use scoped device node handling to simplify error paths Obtain the device node reference with scoped/cleanup.h to reduce error handling and make the code a bit simpler. Signed-off-by: Krzysztof Kozlowski Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/20240814-b4-cleanup-h-of-node-put-usb-v1-9-95481b9682bc@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-rtk.c | 19 +++++++------------ 1 file changed, 7 insertions(+), 12 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-rtk.c b/drivers/usb/dwc3/dwc3-rtk.c index 3cd6b184551c..1e3ec2084286 100644 --- a/drivers/usb/dwc3/dwc3-rtk.c +++ b/drivers/usb/dwc3/dwc3-rtk.c @@ -6,6 +6,7 @@ * */ +#include #include #include #include @@ -173,23 +174,20 @@ static const char *const speed_names[] = { static enum usb_device_speed __get_dwc3_maximum_speed(struct device_node *np) { - struct device_node *dwc3_np; const char *maximum_speed; int ret; - dwc3_np = of_get_compatible_child(np, "snps,dwc3"); + struct device_node *dwc3_np __free(device_node) = of_get_compatible_child(np, + "snps,dwc3"); if (!dwc3_np) return USB_SPEED_UNKNOWN; ret = of_property_read_string(dwc3_np, "maximum-speed", &maximum_speed); if (ret < 0) - goto out; + return ret; ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed); -out: - of_node_put(dwc3_np); - return (ret < 0) ? USB_SPEED_UNKNOWN : ret; } @@ -276,7 +274,6 @@ static int dwc3_rtk_probe_dwc3_core(struct dwc3_rtk *rtk) struct device_node *node = dev->of_node; struct platform_device *dwc3_pdev; struct device *dwc3_dev; - struct device_node *dwc3_node; enum usb_dr_mode dr_mode; int ret = 0; @@ -290,7 +287,8 @@ static int dwc3_rtk_probe_dwc3_core(struct dwc3_rtk *rtk) return ret; } - dwc3_node = of_get_compatible_child(node, "snps,dwc3"); + struct device_node *dwc3_node __free(device_node) = of_get_compatible_child(node, + "snps,dwc3"); if (!dwc3_node) { dev_err(dev, "failed to find dwc3 core node\n"); ret = -ENODEV; @@ -301,7 +299,7 @@ static int dwc3_rtk_probe_dwc3_core(struct dwc3_rtk *rtk) if (!dwc3_pdev) { dev_err(dev, "failed to find dwc3 core platform_device\n"); ret = -ENODEV; - goto err_node_put; + goto depopulate; } dwc3_dev = &dwc3_pdev->dev; @@ -343,14 +341,11 @@ static int dwc3_rtk_probe_dwc3_core(struct dwc3_rtk *rtk) switch_usb2_role(rtk, rtk->cur_role); platform_device_put(dwc3_pdev); - of_node_put(dwc3_node); return 0; err_pdev_put: platform_device_put(dwc3_pdev); -err_node_put: - of_node_put(dwc3_node); depopulate: of_platform_depopulate(dev); From 819c0c31a78e389812ab183eceabec58d1d23319 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 12:35:46 +0200 Subject: [PATCH 086/145] usb: dwc3: rtk: return directly and simplify with devm_platform_ioremap_resource Use devm_platform_ioremap_resource() wrapper instead of two calls, which together with returning directly instead of useless goto, allows to nicely simplify the probe() function. Signed-off-by: Krzysztof Kozlowski Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/20240814-b4-cleanup-h-of-node-put-usb-v1-10-95481b9682bc@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-rtk.c | 33 ++++++++------------------------- 1 file changed, 8 insertions(+), 25 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-rtk.c b/drivers/usb/dwc3/dwc3-rtk.c index 1e3ec2084286..b3db5cd9906e 100644 --- a/drivers/usb/dwc3/dwc3-rtk.c +++ b/drivers/usb/dwc3/dwc3-rtk.c @@ -358,30 +358,18 @@ static int dwc3_rtk_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct resource *res; void __iomem *regs; - int ret = 0; rtk = devm_kzalloc(dev, sizeof(*rtk), GFP_KERNEL); - if (!rtk) { - ret = -ENOMEM; - goto out; - } + if (!rtk) + return -ENOMEM; platform_set_drvdata(pdev, rtk); rtk->dev = dev; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(dev, "missing memory resource\n"); - ret = -ENODEV; - goto out; - } - - regs = devm_ioremap_resource(dev, res); - if (IS_ERR(regs)) { - ret = PTR_ERR(regs); - goto out; - } + regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res); + if (IS_ERR(regs)) + return PTR_ERR(regs); rtk->regs = regs; rtk->regs_size = resource_size(res); @@ -389,16 +377,11 @@ static int dwc3_rtk_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 1); if (res) { rtk->pm_base = devm_ioremap_resource(dev, res); - if (IS_ERR(rtk->pm_base)) { - ret = PTR_ERR(rtk->pm_base); - goto out; - } + if (IS_ERR(rtk->pm_base)) + return PTR_ERR(rtk->pm_base); } - ret = dwc3_rtk_probe_dwc3_core(rtk); - -out: - return ret; + return dwc3_rtk_probe_dwc3_core(rtk); } static void dwc3_rtk_remove(struct platform_device *pdev) From e23593ee41fa4d2f76588dfe609b416c1d9710b8 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 12:35:47 +0200 Subject: [PATCH 087/145] usb: dwc3: xilinx: simplify with dev_err_probe Use dev_err_probe() to make the error paths a bit simpler. Signed-off-by: Krzysztof Kozlowski Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/20240814-b4-cleanup-h-of-node-put-usb-v1-11-95481b9682bc@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-xilinx.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-xilinx.c b/drivers/usb/dwc3/dwc3-xilinx.c index f1298b1b4f84..b5e5be424ce9 100644 --- a/drivers/usb/dwc3/dwc3-xilinx.c +++ b/drivers/usb/dwc3/dwc3-xilinx.c @@ -285,11 +285,8 @@ static int dwc3_xlnx_probe(struct platform_device *pdev) return -ENOMEM; regs = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(regs)) { - ret = PTR_ERR(regs); - dev_err_probe(dev, ret, "failed to map registers\n"); - return ret; - } + if (IS_ERR(regs)) + return dev_err_probe(dev, PTR_ERR(regs), "failed to map registers\n"); match = of_match_node(dwc3_xlnx_of_match, pdev->dev.of_node); From 4058c39bd176daf11a826802d940d86292a6b02b Mon Sep 17 00:00:00 2001 From: Shawn Shao Date: Fri, 30 Aug 2024 11:17:09 +0800 Subject: [PATCH 088/145] usb: dwc2: Adjust the timing of USB Driver Interrupt Registration in the Crashkernel Scenario The issue is that before entering the crash kernel, the DWC USB controller did not perform operations such as resetting the interrupt mask bits. After entering the crash kernel,before the USB interrupt handler registration was completed while loading the DWC USB driver,an GINTSTS_SOF interrupt was received.This triggered the misroute_irq process within the GIC handling framework,ultimately leading to the misrouting of the interrupt,causing it to be handled by the wrong interrupt handler and resulting in the issue. Summary:In a scenario where the kernel triggers a panic and enters the crash kernel,it is necessary to ensure that the interrupt mask bit is not enabled before the interrupt registration is complete. If an interrupt reaches the CPU at this moment,it will certainly not be handled correctly,especially in cases where this interrupt is reported frequently. Please refer to the Crashkernel dmesg information as follows (the message on line 3 was added before devm_request_irq is called by the dwc2_driver_probe function): [ 5.866837][ T1] dwc2 JMIC0010:01: supply vusb_d not found, using dummy regulator [ 5.874588][ T1] dwc2 JMIC0010:01: supply vusb_a not found, using dummy regulator [ 5.882335][ T1] dwc2 JMIC0010:01: before devm_request_irq irq: [71], gintmsk[0xf300080e], gintsts[0x04200009] [ 5.892686][ C0] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.10.0-jmnd1.2_RC #18 [ 5.900327][ C0] Hardware name: CMSS HyperCard4-25G/HyperCard4-25G, BIOS 1.6.4 Jul 8 2024 [ 5.908836][ C0] Call trace: [ 5.911965][ C0] dump_backtrace+0x0/0x1f0 [ 5.916308][ C0] show_stack+0x20/0x30 [ 5.920304][ C0] dump_stack+0xd8/0x140 [ 5.924387][ C0] pcie_xxx_handler+0x3c/0x1d8 [ 5.930121][ C0] __handle_irq_event_percpu+0x64/0x1e0 [ 5.935506][ C0] handle_irq_event+0x80/0x1d0 [ 5.940109][ C0] try_one_irq+0x138/0x174 [ 5.944365][ C0] misrouted_irq+0x134/0x140 [ 5.948795][ C0] note_interrupt+0x1d0/0x30c [ 5.953311][ C0] handle_irq_event+0x13c/0x1d0 [ 5.958001][ C0] handle_fasteoi_irq+0xd4/0x260 [ 5.962779][ C0] __handle_domain_irq+0x88/0xf0 [ 5.967555][ C0] gic_handle_irq+0x9c/0x2f0 [ 5.971985][ C0] el1_irq+0xb8/0x140 [ 5.975807][ C0] __setup_irq+0x3dc/0x7cc [ 5.980064][ C0] request_threaded_irq+0xf4/0x1b4 [ 5.985015][ C0] devm_request_threaded_irq+0x80/0x100 [ 5.990400][ C0] dwc2_driver_probe+0x1b8/0x6b0 [ 5.995178][ C0] platform_drv_probe+0x5c/0xb0 [ 5.999868][ C0] really_probe+0xf8/0x51c [ 6.004125][ C0] driver_probe_device+0xfc/0x170 [ 6.008989][ C0] device_driver_attach+0xc8/0xd0 [ 6.013853][ C0] __driver_attach+0xe8/0x1b0 [ 6.018369][ C0] bus_for_each_dev+0x7c/0xdc [ 6.022886][ C0] driver_attach+0x2c/0x3c [ 6.027143][ C0] bus_add_driver+0xdc/0x240 [ 6.031573][ C0] driver_register+0x80/0x13c [ 6.036090][ C0] __platform_driver_register+0x50/0x5c [ 6.041476][ C0] dwc2_platform_driver_init+0x24/0x30 [ 6.046774][ C0] do_one_initcall+0x50/0x25c [ 6.051291][ C0] do_initcall_level+0xe4/0xfc [ 6.055894][ C0] do_initcalls+0x80/0xa4 [ 6.060064][ C0] kernel_init_freeable+0x198/0x240 [ 6.065102][ C0] kernel_init+0x1c/0x12c Signed-off-by: Shawn Shao Link: https://lore.kernel.org/r/20240830031709.134-1-shawn.shao@jaguarmicro.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc2/platform.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-) diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 7b84416dfc2b..c1b7209b9483 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -469,18 +469,6 @@ static int dwc2_driver_probe(struct platform_device *dev) spin_lock_init(&hsotg->lock); - hsotg->irq = platform_get_irq(dev, 0); - if (hsotg->irq < 0) - return hsotg->irq; - - dev_dbg(hsotg->dev, "registering common handler for irq%d\n", - hsotg->irq); - retval = devm_request_irq(hsotg->dev, hsotg->irq, - dwc2_handle_common_intr, IRQF_SHARED, - dev_name(hsotg->dev), hsotg); - if (retval) - return retval; - hsotg->vbus_supply = devm_regulator_get_optional(hsotg->dev, "vbus"); if (IS_ERR(hsotg->vbus_supply)) { retval = PTR_ERR(hsotg->vbus_supply); @@ -524,6 +512,20 @@ static int dwc2_driver_probe(struct platform_device *dev) if (retval) goto error; + hsotg->irq = platform_get_irq(dev, 0); + if (hsotg->irq < 0) { + retval = hsotg->irq; + goto error; + } + + dev_dbg(hsotg->dev, "registering common handler for irq%d\n", + hsotg->irq); + retval = devm_request_irq(hsotg->dev, hsotg->irq, + dwc2_handle_common_intr, IRQF_SHARED, + dev_name(hsotg->dev), hsotg); + if (retval) + goto error; + /* * For OTG cores, set the force mode bits to reflect the value * of dr_mode. Force mode bits should not be touched at any From 27e12d5aa4f9b0cc7b15050bc560c75aaaa8695b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andreas=20K=C3=BChn?= Date: Sat, 31 Aug 2024 21:34:06 +0200 Subject: [PATCH 089/145] usb: chipidea: npcm: Fix coding style with missing space MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixed coding style issue: added missing space. Signed-off-by: Andreas Kühn Link: https://lore.kernel.org/r/20240831193407.11302-1-andreas.kuehn@diekuehnen.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci_hdrc_npcm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/chipidea/ci_hdrc_npcm.c b/drivers/usb/chipidea/ci_hdrc_npcm.c index b14127873c55..c89c68f41ccc 100644 --- a/drivers/usb/chipidea/ci_hdrc_npcm.c +++ b/drivers/usb/chipidea/ci_hdrc_npcm.c @@ -28,7 +28,7 @@ static int npcm_udc_notify_event(struct ci_hdrc *ci, unsigned event) hw_write(ci, OP_USBMODE, 0xffffffff, 0x0); break; default: - dev_dbg(dev, "unknown ci_hdrc event (%d)\n",event); + dev_dbg(dev, "unknown ci_hdrc event (%d)\n", event); break; } From b24301364a9471fbca86d41fa0982ae4e038140d Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Sun, 1 Sep 2024 17:23:57 +0100 Subject: [PATCH 090/145] usb: gadget: udc-xilinx: Remove trailing space after \n newline There is a extraneous space after a newline in a dev_dbg message. Remove it. Signed-off-by: Colin Ian King Link: https://lore.kernel.org/r/20240901162357.144222-1-colin.i.king@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/udc-xilinx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/udc/udc-xilinx.c b/drivers/usb/gadget/udc/udc-xilinx.c index 74590f93ea61..ebc45565c33e 100644 --- a/drivers/usb/gadget/udc/udc-xilinx.c +++ b/drivers/usb/gadget/udc/udc-xilinx.c @@ -947,7 +947,7 @@ static int xudc_ep_disable(struct usb_ep *_ep) ep->desc = NULL; ep->ep_usb.desc = NULL; - dev_dbg(udc->dev, "USB Ep %d disable\n ", ep->epnumber); + dev_dbg(udc->dev, "USB Ep %d disable\n", ep->epnumber); /* Disable the endpoint.*/ epcfg = udc->read_fn(udc->addr + ep->offset); epcfg &= ~XUSB_EP_CFG_VALID_MASK; From c146ede472717f352b7283a525bd9a1a2b15e2cf Mon Sep 17 00:00:00 2001 From: Zhang Zekun Date: Mon, 2 Sep 2024 20:30:20 +0800 Subject: [PATCH 091/145] usb: ohci-nxp: Use helper function devm_clk_get_enabled() devm_clk_get() and clk_prepare_enable() can be replaced by helper function devm_clk_get_enabled(). Let's use devm_clk_get_enabled() to simplify code and avoid calling clk_disable_unprepare(). Signed-off-by: Zhang Zekun Acked-by: Alan Stern Link: https://lore.kernel.org/r/20240902123020.29267-3-zhangzekun11@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-nxp.c | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) diff --git a/drivers/usb/host/ohci-nxp.c b/drivers/usb/host/ohci-nxp.c index 8264c454f6bd..5b775e1ea527 100644 --- a/drivers/usb/host/ohci-nxp.c +++ b/drivers/usb/host/ohci-nxp.c @@ -51,8 +51,6 @@ static struct hc_driver __read_mostly ohci_nxp_hc_driver; static struct i2c_client *isp1301_i2c_client; -static struct clk *usb_host_clk; - static void isp1301_configure_lpc32xx(void) { /* LPC32XX only supports DAT_SE0 USB mode */ @@ -155,6 +153,7 @@ static int ohci_hcd_nxp_probe(struct platform_device *pdev) struct resource *res; int ret = 0, irq; struct device_node *isp1301_node; + struct clk *usb_host_clk; if (pdev->dev.of_node) { isp1301_node = of_parse_phandle(pdev->dev.of_node, @@ -180,26 +179,20 @@ static int ohci_hcd_nxp_probe(struct platform_device *pdev) } /* Enable USB host clock */ - usb_host_clk = devm_clk_get(&pdev->dev, NULL); + usb_host_clk = devm_clk_get_enabled(&pdev->dev, NULL); if (IS_ERR(usb_host_clk)) { - dev_err(&pdev->dev, "failed to acquire USB OHCI clock\n"); + dev_err(&pdev->dev, "failed to acquire and start USB OHCI clock\n"); ret = PTR_ERR(usb_host_clk); goto fail_disable; } - ret = clk_prepare_enable(usb_host_clk); - if (ret < 0) { - dev_err(&pdev->dev, "failed to start USB OHCI clock\n"); - goto fail_disable; - } - isp1301_configure(); hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { dev_err(&pdev->dev, "Failed to allocate HC buffer\n"); ret = -ENOMEM; - goto fail_hcd; + goto fail_disable; } hcd->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res); @@ -229,8 +222,6 @@ static int ohci_hcd_nxp_probe(struct platform_device *pdev) ohci_nxp_stop_hc(); fail_resource: usb_put_hcd(hcd); -fail_hcd: - clk_disable_unprepare(usb_host_clk); fail_disable: isp1301_i2c_client = NULL; return ret; @@ -243,7 +234,6 @@ static void ohci_hcd_nxp_remove(struct platform_device *pdev) usb_remove_hcd(hcd); ohci_nxp_stop_hc(); usb_put_hcd(hcd); - clk_disable_unprepare(usb_host_clk); isp1301_i2c_client = NULL; } From a17f04d4f26db70a42e52ebf0f04d84da79ebf1e Mon Sep 17 00:00:00 2001 From: Michael Walle Date: Sun, 25 Aug 2024 20:04:46 +0200 Subject: [PATCH 092/145] usb: gadget: f_acm: make bInterfaceProtocol configurable The bInterfaceProtocol is hardcoded to USB_CDC_ACM_PROTO_AT_V25TER. This will lead to problems with ModemManger which will gladly try to probe that port as a modem if the gadget also has a network function. ModemManager will try to send AT commands to the ACM port. Make the bInterfaceProtocol configurable. For this, track the number of instances and only allow write to the property if there are no intances (yet). This will also set bFunctionProtocol to the same value, see commit 5c8db070b448 ("USB: Change acm_iad_descriptor bFunctionProtocol to USB_CDC_ACM_PROTO_AT_V25TER") for more details. Signed-off-by: Michael Walle Link: https://lore.kernel.org/r/20240825180446.3757073-1-mwalle@kernel.org Signed-off-by: Greg Kroah-Hartman --- .../ABI/testing/configfs-usb-gadget-acm | 7 +++ drivers/usb/gadget/function/f_acm.c | 52 ++++++++++++++++++- drivers/usb/gadget/function/u_serial.h | 4 ++ 3 files changed, 61 insertions(+), 2 deletions(-) diff --git a/Documentation/ABI/testing/configfs-usb-gadget-acm b/Documentation/ABI/testing/configfs-usb-gadget-acm index d21092d75a05..25e68be9eb66 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-acm +++ b/Documentation/ABI/testing/configfs-usb-gadget-acm @@ -6,3 +6,10 @@ Description: This item contains just one readonly attribute: port_num. It contains the port number of the /dev/ttyGS device associated with acm function's instance "name". + +What: /config/usb-gadget/gadget/functions/acm.name/protocol +Date: Aug 2024 +KernelVersion: 6.13 +Description: + Reported bInterfaceProtocol for the ACM device. For legacy + reasons, this defaults to 1 (USB_CDC_ACM_PROTO_AT_V25TER). diff --git a/drivers/usb/gadget/function/f_acm.c b/drivers/usb/gadget/function/f_acm.c index 724b2631f249..7061720b9732 100644 --- a/drivers/usb/gadget/function/f_acm.c +++ b/drivers/usb/gadget/function/f_acm.c @@ -41,6 +41,7 @@ struct f_acm { struct gserial port; u8 ctrl_id, data_id; u8 port_num; + u8 bInterfaceProtocol; u8 pending; @@ -89,7 +90,7 @@ acm_iad_descriptor = { .bInterfaceCount = 2, // control + data .bFunctionClass = USB_CLASS_COMM, .bFunctionSubClass = USB_CDC_SUBCLASS_ACM, - .bFunctionProtocol = USB_CDC_ACM_PROTO_AT_V25TER, + /* .bFunctionProtocol = DYNAMIC */ /* .iFunction = DYNAMIC */ }; @@ -101,7 +102,7 @@ static struct usb_interface_descriptor acm_control_interface_desc = { .bNumEndpoints = 1, .bInterfaceClass = USB_CLASS_COMM, .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, - .bInterfaceProtocol = USB_CDC_ACM_PROTO_AT_V25TER, + /* .bInterfaceProtocol = DYNAMIC */ /* .iInterface = DYNAMIC */ }; @@ -663,6 +664,9 @@ acm_bind(struct usb_configuration *c, struct usb_function *f) goto fail; acm->notify = ep; + acm_iad_descriptor.bFunctionProtocol = acm->bInterfaceProtocol; + acm_control_interface_desc.bInterfaceProtocol = acm->bInterfaceProtocol; + /* allocate notification */ acm->notify_req = gs_alloc_req(ep, sizeof(struct usb_cdc_notification) + 2, @@ -719,8 +723,14 @@ static void acm_unbind(struct usb_configuration *c, struct usb_function *f) static void acm_free_func(struct usb_function *f) { struct f_acm *acm = func_to_acm(f); + struct f_serial_opts *opts; + + opts = container_of(f->fi, struct f_serial_opts, func_inst); kfree(acm); + mutex_lock(&opts->lock); + opts->instances--; + mutex_unlock(&opts->lock); } static void acm_resume(struct usb_function *f) @@ -761,7 +771,11 @@ static struct usb_function *acm_alloc_func(struct usb_function_instance *fi) acm->port.func.disable = acm_disable; opts = container_of(fi, struct f_serial_opts, func_inst); + mutex_lock(&opts->lock); acm->port_num = opts->port_num; + acm->bInterfaceProtocol = opts->protocol; + opts->instances++; + mutex_unlock(&opts->lock); acm->port.func.unbind = acm_unbind; acm->port.func.free_func = acm_free_func; acm->port.func.resume = acm_resume; @@ -812,11 +826,42 @@ static ssize_t f_acm_port_num_show(struct config_item *item, char *page) CONFIGFS_ATTR_RO(f_acm_, port_num); +static ssize_t f_acm_protocol_show(struct config_item *item, char *page) +{ + return sprintf(page, "%u\n", to_f_serial_opts(item)->protocol); +} + +static ssize_t f_acm_protocol_store(struct config_item *item, + const char *page, size_t count) +{ + struct f_serial_opts *opts = to_f_serial_opts(item); + int ret; + + mutex_lock(&opts->lock); + + if (opts->instances) { + ret = -EBUSY; + goto out; + } + + ret = kstrtou8(page, 0, &opts->protocol); + if (ret) + goto out; + ret = count; + +out: + mutex_unlock(&opts->lock); + return ret; +} + +CONFIGFS_ATTR(f_acm_, protocol); + static struct configfs_attribute *acm_attrs[] = { #ifdef CONFIG_U_SERIAL_CONSOLE &f_acm_attr_console, #endif &f_acm_attr_port_num, + &f_acm_attr_protocol, NULL, }; @@ -832,6 +877,7 @@ static void acm_free_instance(struct usb_function_instance *fi) opts = container_of(fi, struct f_serial_opts, func_inst); gserial_free_line(opts->port_num); + mutex_destroy(&opts->lock); kfree(opts); } @@ -843,7 +889,9 @@ static struct usb_function_instance *acm_alloc_instance(void) opts = kzalloc(sizeof(*opts), GFP_KERNEL); if (!opts) return ERR_PTR(-ENOMEM); + opts->protocol = USB_CDC_ACM_PROTO_AT_V25TER; opts->func_inst.free_func_inst = acm_free_instance; + mutex_init(&opts->lock); ret = gserial_alloc_line(&opts->port_num); if (ret) { kfree(opts); diff --git a/drivers/usb/gadget/function/u_serial.h b/drivers/usb/gadget/function/u_serial.h index 901d99310bc4..e1274338ea61 100644 --- a/drivers/usb/gadget/function/u_serial.h +++ b/drivers/usb/gadget/function/u_serial.h @@ -17,6 +17,10 @@ struct f_serial_opts { struct usb_function_instance func_inst; u8 port_num; + u8 protocol; + + struct mutex lock; /* protect instances */ + int instances; }; /* From 9299f12c20d4dc51d3b548392e1725da37cada48 Mon Sep 17 00:00:00 2001 From: Hongbo Li Date: Tue, 3 Sep 2024 09:42:49 +0800 Subject: [PATCH 093/145] usb: f_mass_storage: Make use of the helper macro kthread_run() Replace kthread_create/wake_up_process() with kthread_run() to simplify the code. Acked-by: Alan Stern Signed-off-by: Hongbo Li Link: https://lore.kernel.org/r/20240903014249.3098082-1-lihongbo22@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/function/f_mass_storage.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c index cfd712fd7452..e11d8c0edf06 100644 --- a/drivers/usb/gadget/function/f_mass_storage.c +++ b/drivers/usb/gadget/function/f_mass_storage.c @@ -3050,7 +3050,7 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f) if (!common->thread_task) { common->state = FSG_STATE_NORMAL; common->thread_task = - kthread_create(fsg_main_thread, common, "file-storage"); + kthread_run(fsg_main_thread, common, "file-storage"); if (IS_ERR(common->thread_task)) { ret = PTR_ERR(common->thread_task); common->thread_task = NULL; @@ -3059,7 +3059,6 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f) } DBG(common, "I/O thread pid: %d\n", task_pid_nr(common->thread_task)); - wake_up_process(common->thread_task); } fsg->gadget = gadget; From 948ce83fbb7df85bc930a5c0d6b133481be05c0b Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 30 Aug 2024 18:26:27 +0300 Subject: [PATCH 094/145] xhci: Add USB4 tunnel detection for USB3 devices on Intel hosts Knowledge about tunneled devices is useful in order to correctly describe the relationship between tunneled USB3 device and USB4 Host Interface, ensuring proper suspend and resume order, and to be able to power down Thunderbolt if there is no need for tunneling. Intel hosts share if a USB3 connection is native or tunneled via vendor specific "SPR eSS PORT" registers. These vendor registers are available if host supports a vendor specific SPR shadow extended capability with ID 206. Registers are per USB3 port and 0x20 apart. Knowing the tunneling status of the device connected to roothub is enough as all its children will have the same status. Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240830152630.3943215-2-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ext-caps.h | 5 +++++ drivers/usb/host/xhci-hub.c | 31 +++++++++++++++++++++++++++++++ drivers/usb/host/xhci.c | 11 +++++++++++ drivers/usb/host/xhci.h | 1 + 4 files changed, 48 insertions(+) diff --git a/drivers/usb/host/xhci-ext-caps.h b/drivers/usb/host/xhci-ext-caps.h index 96eb36a58738..67ecf7320c62 100644 --- a/drivers/usb/host/xhci-ext-caps.h +++ b/drivers/usb/host/xhci-ext-caps.h @@ -42,6 +42,7 @@ #define XHCI_EXT_CAPS_DEBUG 10 /* Vendor caps */ #define XHCI_EXT_CAPS_VENDOR_INTEL 192 +#define XHCI_EXT_CAPS_INTEL_SPR_SHADOW 206 /* USB Legacy Support Capability - section 7.1.1 */ #define XHCI_HC_BIOS_OWNED (1 << 16) #define XHCI_HC_OS_OWNED (1 << 24) @@ -64,6 +65,10 @@ #define XHCI_HLC (1 << 19) #define XHCI_BLC (1 << 20) +/* Intel SPR shadow capability */ +#define XHCI_INTEL_SPR_ESS_PORT_OFFSET 0x8ac4 /* SuperSpeed port control */ +#define XHCI_INTEL_SPR_TUNEN BIT(4) /* Tunnel mode enabled */ + /* command register values to disable interrupts and halt the HC */ /* start/stop HC execution - do not write unless HC is halted*/ #define XHCI_CMD_RUN (1 << 0) diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 61f083de6e19..4ba910eadd3f 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -752,6 +752,37 @@ static int xhci_exit_test_mode(struct xhci_hcd *xhci) return xhci_reset(xhci, XHCI_RESET_SHORT_USEC); } +/** + * xhci_port_is_tunneled() - Check if USB3 connection is tunneled over USB4 + * @xhci: xhci host controller + * @port: USB3 port to be checked. + * + * Some hosts can detect if a USB3 connection is native USB3 or tunneled over + * USB4. Intel hosts expose this via vendor specific extended capability 206 + * eSS PORT registers TUNEN (tunnel enabled) bit. + * + * A USB3 device must be connected to the port to detect the tunnel. + * + * Return: true if USB3 connection is tunneled over USB4 + */ +bool xhci_port_is_tunneled(struct xhci_hcd *xhci, struct xhci_port *port) +{ + void __iomem *base; + u32 offset; + + base = &xhci->cap_regs->hc_capbase; + offset = xhci_find_next_ext_cap(base, 0, XHCI_EXT_CAPS_INTEL_SPR_SHADOW); + + if (offset && offset <= XHCI_INTEL_SPR_ESS_PORT_OFFSET) { + offset = XHCI_INTEL_SPR_ESS_PORT_OFFSET + port->hcd_portnum * 0x20; + + if (readl(base + offset) & XHCI_INTEL_SPR_TUNEN) + return true; + } + + return false; +} + void xhci_set_link_state(struct xhci_hcd *xhci, struct xhci_port *port, u32 link_state) { diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index efdf4c228b8c..1ea2c91106b7 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -4525,6 +4525,17 @@ static int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev) struct xhci_port *port; u32 capability; + /* Check if USB3 device at root port is tunneled over USB4 */ + if (hcd->speed >= HCD_USB3 && !udev->parent->parent) { + port = xhci->usb3_rhub.ports[udev->portnum - 1]; + + if (xhci_port_is_tunneled(xhci, port)) + dev_dbg(&udev->dev, "tunneled over USB4 link\n"); + else + dev_dbg(&udev->dev, "native USB 3.x link\n"); + return 0; + } + if (hcd->speed >= HCD_USB3 || !udev->lpm_capable || !xhci->hw_lpm_support) return 0; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index df2c81db21a1..e87a6b2f139d 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1929,6 +1929,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, int xhci_hub_status_data(struct usb_hcd *hcd, char *buf); int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1); struct xhci_hub *xhci_get_rhub(struct usb_hcd *hcd); +bool xhci_port_is_tunneled(struct xhci_hcd *xhci, struct xhci_port *port); void xhci_hc_died(struct xhci_hcd *xhci); From f46a6e16519712651e2304da03ec144cc0bb084c Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 30 Aug 2024 18:26:28 +0300 Subject: [PATCH 095/145] usb: Add tunnel_mode parameter to usb device structure Add 'tunnel_mode' enum to usb device structure to describe if a USB3 link is tunneled over USB4, or connected directly using native USB2/USB3 protocols. Tunneled devices depend on USB4 NHI host to maintain the tunnel. Knowledge about tunneled devices is important to ensure correct suspend and resume order between USB4 hosts and tunneled devices. i.e. make sure tunnel is up before the USB device using it resumes. USB hosts such as xHCI may have vendor specific ways to detect tunneled connections. This 'tunnel_mode' parameter can be set by USB3 host driver during hcd->driver->update_device(hcd, udev) callback. tunnel_mode can be set to: USB_LINK_UNKNOWN = 0 USB_LINK_NATIVE USB_LINK_TUNNELED USB_LINK_UNKNOWN is used in case host is not capable of detecting tunneled links. Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240830152630.3943215-3-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-hub.c | 13 +++++++++---- drivers/usb/host/xhci.c | 7 +++++-- drivers/usb/host/xhci.h | 4 ++-- include/linux/usb.h | 8 ++++++++ 4 files changed, 24 insertions(+), 8 deletions(-) diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 4ba910eadd3f..d27c30ac17fd 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -763,9 +763,12 @@ static int xhci_exit_test_mode(struct xhci_hcd *xhci) * * A USB3 device must be connected to the port to detect the tunnel. * - * Return: true if USB3 connection is tunneled over USB4 + * Return: link tunnel mode enum, USB_LINK_UNKNOWN if host is incapable of + * detecting USB3 over USB4 tunnels. USB_LINK_NATIVE or USB_LINK_TUNNELED + * otherwise. */ -bool xhci_port_is_tunneled(struct xhci_hcd *xhci, struct xhci_port *port) +enum usb_link_tunnel_mode xhci_port_is_tunneled(struct xhci_hcd *xhci, + struct xhci_port *port) { void __iomem *base; u32 offset; @@ -777,10 +780,12 @@ bool xhci_port_is_tunneled(struct xhci_hcd *xhci, struct xhci_port *port) offset = XHCI_INTEL_SPR_ESS_PORT_OFFSET + port->hcd_portnum * 0x20; if (readl(base + offset) & XHCI_INTEL_SPR_TUNEN) - return true; + return USB_LINK_TUNNELED; + else + return USB_LINK_NATIVE; } - return false; + return USB_LINK_UNKNOWN; } void xhci_set_link_state(struct xhci_hcd *xhci, struct xhci_port *port, diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 1ea2c91106b7..a69245074395 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -4529,9 +4529,12 @@ static int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev) if (hcd->speed >= HCD_USB3 && !udev->parent->parent) { port = xhci->usb3_rhub.ports[udev->portnum - 1]; - if (xhci_port_is_tunneled(xhci, port)) + udev->tunnel_mode = xhci_port_is_tunneled(xhci, port); + if (udev->tunnel_mode == USB_LINK_UNKNOWN) + dev_dbg(&udev->dev, "link tunnel state unknown\n"); + else if (udev->tunnel_mode == USB_LINK_TUNNELED) dev_dbg(&udev->dev, "tunneled over USB4 link\n"); - else + else if (udev->tunnel_mode == USB_LINK_NATIVE) dev_dbg(&udev->dev, "native USB 3.x link\n"); return 0; } diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index e87a6b2f139d..40aebdfb37c9 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1929,8 +1929,8 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, int xhci_hub_status_data(struct usb_hcd *hcd, char *buf); int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1); struct xhci_hub *xhci_get_rhub(struct usb_hcd *hcd); -bool xhci_port_is_tunneled(struct xhci_hcd *xhci, struct xhci_port *port); - +enum usb_link_tunnel_mode xhci_port_is_tunneled(struct xhci_hcd *xhci, + struct xhci_port *port); void xhci_hc_died(struct xhci_hcd *xhci); #ifdef CONFIG_PM diff --git a/include/linux/usb.h b/include/linux/usb.h index 832997a9da0a..672d8fc2abdb 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -495,6 +495,12 @@ struct usb_dev_state; struct usb_tt; +enum usb_link_tunnel_mode { + USB_LINK_UNKNOWN = 0, + USB_LINK_NATIVE, + USB_LINK_TUNNELED, +}; + enum usb_port_connect_type { USB_PORT_CONNECT_TYPE_UNKNOWN = 0, USB_PORT_CONNECT_TYPE_HOT_PLUG, @@ -605,6 +611,7 @@ struct usb3_lpm_parameters { * WUSB devices are not, until we authorize them from user space. * FIXME -- complete doc * @authenticated: Crypto authentication passed + * @tunnel_mode: Connection native or tunneled over USB4 * @lpm_capable: device supports LPM * @lpm_devinit_allow: Allow USB3 device initiated LPM, exit latency is in range * @usb2_hw_lpm_capable: device can perform USB2 hardware LPM @@ -714,6 +721,7 @@ struct usb_device { unsigned do_remote_wakeup:1; unsigned reset_resume:1; unsigned port_is_suspended:1; + enum usb_link_tunnel_mode tunnel_mode; int slot_id; struct usb2_lpm_parameters l1_params; From f1bfb4a6fed64de1771b43a76631942279851744 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 30 Aug 2024 18:26:29 +0300 Subject: [PATCH 096/145] usb: acpi: add device link between tunneled USB3 device and USB4 Host Interface Describe the power management relationship between a tunneled USB3 device and the tunnel providing USB4 host with a device link as the relationship between them is not evident from normal device hierarchy. Tunneling capable ports have an ACPI _DSD object pointing to the USB4 Host Interface that is used to establish USB3 3.x tunnels Set the link directly between tunneled USB3 devices and USB4 Host Interface to ensure that the USB4 host can runtime suspend if no tunneled USB 3.x devices exist. Current Thunderbolt code sets a link between USB4 Host Interface and USB3 xHCI host which prevents USB4 Host Interface from runtime suspending even if the USB3 host is only serving native USB devices. See commit b2be2b05cf3b ("thunderbolt: Create device links from ACPI description") for details. As the device link is only set for USB3 devices that are already tunneled we know that USB4 Host Interface exists and is bound to its driver. Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240830152630.3943215-4-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/usb-acpi.c | 53 +++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c index 7f8a912d4fe2..21585ed89ef8 100644 --- a/drivers/usb/core/usb-acpi.c +++ b/drivers/usb/core/usb-acpi.c @@ -142,6 +142,53 @@ int usb_acpi_set_power_state(struct usb_device *hdev, int index, bool enable) } EXPORT_SYMBOL_GPL(usb_acpi_set_power_state); +/** + * usb_acpi_add_usb4_devlink - add device link to USB4 Host Interface for tunneled USB3 devices + * + * @udev: Tunneled USB3 device connected to a roothub. + * + * Adds a device link between a tunneled USB3 device and the USB4 Host Interface + * device to ensure correct runtime PM suspend and resume order. This function + * should only be called for tunneled USB3 devices. + * The USB4 Host Interface this tunneled device depends on is found from the roothub + * port ACPI device specific data _DSD entry. + * + * Return: negative error code on failure, 0 otherwise + */ +static int usb_acpi_add_usb4_devlink(struct usb_device *udev) +{ + const struct device_link *link; + struct usb_port *port_dev; + struct usb_hub *hub; + + if (!udev->parent || udev->parent->parent) + return 0; + + hub = usb_hub_to_struct_hub(udev->parent); + port_dev = hub->ports[udev->portnum - 1]; + + struct fwnode_handle *nhi_fwnode __free(fwnode_handle) = + fwnode_find_reference(dev_fwnode(&port_dev->dev), "usb4-host-interface", 0); + + if (IS_ERR(nhi_fwnode)) + return 0; + + link = device_link_add(&port_dev->child->dev, nhi_fwnode->dev, + DL_FLAG_AUTOREMOVE_CONSUMER | + DL_FLAG_RPM_ACTIVE | + DL_FLAG_PM_RUNTIME); + if (!link) { + dev_err(&port_dev->dev, "Failed to created device link from %s to %s\n", + dev_name(&port_dev->child->dev), dev_name(nhi_fwnode->dev)); + return -EINVAL; + } + + dev_dbg(&port_dev->dev, "Created device link from %s to %s\n", + dev_name(&port_dev->child->dev), dev_name(nhi_fwnode->dev)); + + return 0; +} + /* * Private to usb-acpi, all the core needs to know is that * port_dev->location is non-zero when it has been set by the firmware. @@ -262,6 +309,12 @@ usb_acpi_find_companion_for_device(struct usb_device *udev) if (!hub) return NULL; + + /* Tunneled USB3 devices depend on USB4 Host Interface, set device link to it */ + if (udev->speed >= USB_SPEED_SUPER && + udev->tunnel_mode != USB_LINK_NATIVE) + usb_acpi_add_usb4_devlink(udev); + /* * This is an embedded USB device connected to a port and such * devices share port's ACPI companion. From f20998f23a8ce3ba56a06d9423ee57e92bae298c Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 30 Aug 2024 18:26:30 +0300 Subject: [PATCH 097/145] thunderbolt: Don't create device link from USB4 Host Interface to USB3 xHC host USB core will create device links between tunneled USB3 devices and USB4 Host Interface during USB device creation. Those device links are removed with the tunneled USB3 devices, allowing USB4 Host Interface to runtime suspend if USB3 tunnels are not used. So remove device link creation between USB4 Host Interface and USB3 xHC during NHI probe Reported-by: Rajaram Regupathy Reported-by: Saranya Gopal Tested-by: Saranya Gopal Acked-by: Mika Westerberg Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240830152630.3943215-5-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/thunderbolt/acpi.c | 40 ++++++++++---------------------------- 1 file changed, 10 insertions(+), 30 deletions(-) diff --git a/drivers/thunderbolt/acpi.c b/drivers/thunderbolt/acpi.c index c9b6bb46111c..d2a0054217da 100644 --- a/drivers/thunderbolt/acpi.c +++ b/drivers/thunderbolt/acpi.c @@ -32,40 +32,20 @@ static acpi_status tb_acpi_add_link(acpi_handle handle, u32 level, void *data, goto out_put; /* - * Try to find physical device walking upwards to the hierarcy. - * We need to do this because the xHCI driver might not yet be - * bound so the USB3 SuperSpeed ports are not yet created. + * Ignore USB3 ports here as USB core will set up device links between + * tunneled USB3 devices and NHI host during USB device creation. + * USB3 ports might not even have a physical device yet if xHCI driver + * isn't bound yet. */ - do { - dev = acpi_get_first_physical_node(adev); - if (dev) - break; - - adev = acpi_dev_parent(adev); - } while (adev); - - /* - * Check that the device is PCIe. This is because USB3 - * SuperSpeed ports have this property and they are not power - * managed with the xHCI and the SuperSpeed hub so we create the - * link from xHCI instead. - */ - while (dev && !dev_is_pci(dev)) - dev = dev->parent; - - if (!dev) + dev = acpi_get_first_physical_node(adev); + if (!dev || !dev_is_pci(dev)) goto out_put; - /* - * Check that this actually matches the type of device we - * expect. It should either be xHCI or PCIe root/downstream - * port. - */ + /* Check that this matches a PCIe root/downstream port. */ pdev = to_pci_dev(dev); - if (pdev->class == PCI_CLASS_SERIAL_USB_XHCI || - (pci_is_pcie(pdev) && - (pci_pcie_type(pdev) == PCI_EXP_TYPE_ROOT_PORT || - pci_pcie_type(pdev) == PCI_EXP_TYPE_DOWNSTREAM))) { + if (pci_is_pcie(pdev) && + (pci_pcie_type(pdev) == PCI_EXP_TYPE_ROOT_PORT || + pci_pcie_type(pdev) == PCI_EXP_TYPE_DOWNSTREAM)) { const struct device_link *link; /* From d9c61bb33fbbcbc2d5f69efa10db116dab4b56cc Mon Sep 17 00:00:00 2001 From: Michael Grzeschik Date: Sun, 1 Sep 2024 21:11:16 +0200 Subject: [PATCH 098/145] usb: gadget: function: move u_f.h to include/linux/usb/func_utils.h We move the func_utils.h header to include/linux/usb to be able to compile function drivers outside of the drivers/usb/gadget/function directory. Signed-off-by: Michael Grzeschik Link: https://lore.kernel.org/r/20240116-ml-topic-u9p-v12-1-9a27de5160e0@pengutronix.de Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/configfs.c | 2 +- drivers/usb/gadget/function/f_fs.c | 2 +- drivers/usb/gadget/function/f_hid.c | 2 +- drivers/usb/gadget/function/f_loopback.c | 2 +- drivers/usb/gadget/function/f_midi.c | 2 +- drivers/usb/gadget/function/f_midi2.c | 2 +- drivers/usb/gadget/function/f_sourcesink.c | 2 +- drivers/usb/gadget/u_f.c | 2 +- .../usb/gadget/u_f.h => include/linux/usb/func_utils.h | 8 ++++---- 9 files changed, 12 insertions(+), 12 deletions(-) rename drivers/usb/gadget/u_f.h => include/linux/usb/func_utils.h (96%) diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index 5cba3e8d626c..c82a6a0fba93 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -6,10 +6,10 @@ #include #include #include +#include #include #include #include "configfs.h" -#include "u_f.h" #include "u_os_desc.h" static int check_user_usb_string(const char *name, diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index e35177fc6c55..05b52e61a66f 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include @@ -40,7 +41,6 @@ #include #include "u_fs.h" -#include "u_f.h" #include "u_os_desc.h" #include "configfs.h" diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c index 82c7dff6de5c..740311c4fa24 100644 --- a/drivers/usb/gadget/function/f_hid.c +++ b/drivers/usb/gadget/function/f_hid.c @@ -16,10 +16,10 @@ #include #include #include +#include #include #include -#include "u_f.h" #include "u_hid.h" #define HIDG_MINORS 4 diff --git a/drivers/usb/gadget/function/f_loopback.c b/drivers/usb/gadget/function/f_loopback.c index 979b028edb99..49b009a7d5d7 100644 --- a/drivers/usb/gadget/function/f_loopback.c +++ b/drivers/usb/gadget/function/f_loopback.c @@ -14,9 +14,9 @@ #include #include #include +#include #include "g_zero.h" -#include "u_f.h" /* * LOOPBACK FUNCTION ... a testing vehicle for USB peripherals, diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c index 67052a664e74..1067847cc079 100644 --- a/drivers/usb/gadget/function/f_midi.c +++ b/drivers/usb/gadget/function/f_midi.c @@ -30,11 +30,11 @@ #include #include +#include #include #include #include -#include "u_f.h" #include "u_midi.h" MODULE_AUTHOR("Ben Williamson"); diff --git a/drivers/usb/gadget/function/f_midi2.c b/drivers/usb/gadget/function/f_midi2.c index 3f63253ad3e0..8285df9ed6fd 100644 --- a/drivers/usb/gadget/function/f_midi2.c +++ b/drivers/usb/gadget/function/f_midi2.c @@ -15,11 +15,11 @@ #include #include +#include #include #include #include -#include "u_f.h" #include "u_midi2.h" struct f_midi2; diff --git a/drivers/usb/gadget/function/f_sourcesink.c b/drivers/usb/gadget/function/f_sourcesink.c index 6f3702210450..ec5fd25020fd 100644 --- a/drivers/usb/gadget/function/f_sourcesink.c +++ b/drivers/usb/gadget/function/f_sourcesink.c @@ -13,10 +13,10 @@ #include #include #include +#include #include #include "g_zero.h" -#include "u_f.h" /* * SOURCE/SINK FUNCTION ... a primary testing vehicle for USB peripheral diff --git a/drivers/usb/gadget/u_f.c b/drivers/usb/gadget/u_f.c index 6aea1ecb3999..115d219c9c00 100644 --- a/drivers/usb/gadget/u_f.c +++ b/drivers/usb/gadget/u_f.c @@ -8,8 +8,8 @@ * Author: Andrzej Pietrasiewicz */ -#include "u_f.h" #include +#include struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len) { diff --git a/drivers/usb/gadget/u_f.h b/include/linux/usb/func_utils.h similarity index 96% rename from drivers/usb/gadget/u_f.h rename to include/linux/usb/func_utils.h index e313c3b8dcb1..c8795c965109 100644 --- a/drivers/usb/gadget/u_f.h +++ b/include/linux/usb/func_utils.h @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* - * u_f.h + * func_utils.h * * Utility definitions for USB functions * @@ -10,8 +10,8 @@ * Author: Andrzej Pietrasiewicz */ -#ifndef __U_F_H__ -#define __U_F_H__ +#ifndef _FUNC_UTILS_H_ +#define _FUNC_UTILS_H_ #include #include @@ -83,4 +83,4 @@ static inline void free_ep_req(struct usb_ep *ep, struct usb_request *req) usb_ep_free_request(ep, req); } -#endif /* __U_F_H__ */ +#endif /* _FUNC_UTILS_H_ */ From a3be076dc174d9022a71a12554feb4c97b5c4d5c Mon Sep 17 00:00:00 2001 From: Michael Grzeschik Date: Sun, 1 Sep 2024 21:11:17 +0200 Subject: [PATCH 099/145] net/9p/usbg: Add new usb gadget function transport Add the new gadget function for 9pfs transport. This function is defining an simple 9pfs transport interface that consists of one in and one out endpoint. The endpoints transmit and receive the 9pfs protocol payload when mounting a 9p filesystem over usb. Tested-by: Andrzej Pietrasiewicz Signed-off-by: Michael Grzeschik Link: https://lore.kernel.org/r/20240116-ml-topic-u9p-v12-2-9a27de5160e0@pengutronix.de Signed-off-by: Greg Kroah-Hartman --- Documentation/filesystems/9p.rst | 17 +- net/9p/Kconfig | 6 + net/9p/Makefile | 4 + net/9p/trans_usbg.c | 956 +++++++++++++++++++++++++++++++ 4 files changed, 982 insertions(+), 1 deletion(-) create mode 100644 net/9p/trans_usbg.c diff --git a/Documentation/filesystems/9p.rst b/Documentation/filesystems/9p.rst index 1e0e0bb6fdf9..10cf79dc287f 100644 --- a/Documentation/filesystems/9p.rst +++ b/Documentation/filesystems/9p.rst @@ -48,11 +48,25 @@ For server running on QEMU host with virtio transport:: mount -t 9p -o trans=virtio /mnt/9 -where mount_tag is the tag associated by the server to each of the exported +where mount_tag is the tag generated by the server to each of the exported mount points. Each 9P export is seen by the client as a virtio device with an associated "mount_tag" property. Available mount tags can be seen by reading /sys/bus/virtio/drivers/9pnet_virtio/virtio/mount_tag files. +USBG Usage +========== + +To mount a 9p FS on a USB Host accessible via the gadget at runtime:: + + mount -t 9p -o trans=usbg,aname=/path/to/fs /mnt/9 + +To mount a 9p FS on a USB Host accessible via the gadget as root filesystem:: + + root= rootfstype=9p rootflags=trans=usbg,cache=loose,uname=root,access=0,dfltuid=0,dfltgid=0,aname=/path/to/rootfs + +where is the tag associated by the usb gadget transport. +It is defined by the configfs instance name. + Options ======= @@ -68,6 +82,7 @@ Options virtio connect to the next virtio channel available (from QEMU with trans_virtio module) rdma connect to a specified RDMA channel + usbg connect to a specified usb gadget channel ======== ============================================ uname=name user name to attempt mount as on the remote server. The diff --git a/net/9p/Kconfig b/net/9p/Kconfig index bcdab9c23b40..2d7e596e22c3 100644 --- a/net/9p/Kconfig +++ b/net/9p/Kconfig @@ -40,6 +40,12 @@ config NET_9P_XEN This builds support for a transport for 9pfs between two Xen domains. +config NET_9P_USBG + bool "9P USB Gadget Transport" + depends on USB_GADGET + help + This builds support for a transport for 9pfs over + usb gadget. config NET_9P_RDMA depends on INET && INFINIBAND && INFINIBAND_ADDR_TRANS diff --git a/net/9p/Makefile b/net/9p/Makefile index 1df9b344c30b..22794a451c3f 100644 --- a/net/9p/Makefile +++ b/net/9p/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_NET_9P_FD) += 9pnet_fd.o obj-$(CONFIG_NET_9P_XEN) += 9pnet_xen.o obj-$(CONFIG_NET_9P_VIRTIO) += 9pnet_virtio.o obj-$(CONFIG_NET_9P_RDMA) += 9pnet_rdma.o +obj-$(CONFIG_NET_9P_USBG) += 9pnet_usbg.o 9pnet-objs := \ mod.o \ @@ -23,3 +24,6 @@ obj-$(CONFIG_NET_9P_RDMA) += 9pnet_rdma.o 9pnet_rdma-objs := \ trans_rdma.o \ + +9pnet_usbg-objs := \ + trans_usbg.o \ diff --git a/net/9p/trans_usbg.c b/net/9p/trans_usbg.c new file mode 100644 index 000000000000..975b76839dca --- /dev/null +++ b/net/9p/trans_usbg.c @@ -0,0 +1,956 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * trans_usbg.c - USB peripheral usb9pfs configuration driver and transport. + * + * Copyright (C) 2024 Michael Grzeschik + */ + +/* Gadget usb9pfs only needs two bulk endpoints, and will use the usb9pfs + * transport to mount host exported filesystem via usb gadget. + */ + +/* +--------------------------+ | +--------------------------+ + * | 9PFS mounting client | | | 9PFS exporting server | + * SW | | | | | + * | (this:trans_usbg) | | |(e.g. diod or nfs-ganesha)| + * +-------------^------------+ | +-------------^------------+ + * | | | + * ------------------|------------------------------------|------------- + * | | | + * +-------------v------------+ | +-------------v------------+ + * | | | | | + * HW | USB Device Controller <---------> USB Host Controller | + * | | | | | + * +--------------------------+ | +--------------------------+ + */ + +#include +#include +#include +#include +#include + +#include +#include +#include + +#define DEFAULT_BUFLEN 16384 + +struct f_usb9pfs { + struct p9_client *client; + + /* 9p request lock for en/dequeue */ + spinlock_t lock; + + struct usb_request *in_req; + struct usb_request *out_req; + + struct usb_ep *in_ep; + struct usb_ep *out_ep; + + struct completion send; + struct completion received; + + unsigned int buflen; + + struct usb_function function; +}; + +static inline struct f_usb9pfs *func_to_usb9pfs(struct usb_function *f) +{ + return container_of(f, struct f_usb9pfs, function); +} + +struct f_usb9pfs_opts { + struct usb_function_instance func_inst; + unsigned int buflen; + + struct f_usb9pfs_dev *dev; + + /* Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +struct f_usb9pfs_dev { + struct f_usb9pfs *usb9pfs; + struct f_usb9pfs_opts *opts; + char tag[41]; + bool inuse; + + struct list_head usb9pfs_instance; +}; + +static DEFINE_MUTEX(usb9pfs_lock); +static struct list_head usbg_instance_list; + +static int usb9pfs_queue_tx(struct f_usb9pfs *usb9pfs, struct p9_req_t *p9_tx_req, + gfp_t gfp_flags) +{ + struct usb_composite_dev *cdev = usb9pfs->function.config->cdev; + struct usb_request *req = usb9pfs->in_req; + int ret; + + if (!(p9_tx_req->tc.size % usb9pfs->in_ep->maxpacket)) + req->zero = 1; + + req->buf = p9_tx_req->tc.sdata; + req->length = p9_tx_req->tc.size; + req->context = p9_tx_req; + + dev_dbg(&cdev->gadget->dev, "%s usb9pfs send --> %d/%d, zero: %d\n", + usb9pfs->in_ep->name, req->actual, req->length, req->zero); + + ret = usb_ep_queue(usb9pfs->in_ep, req, gfp_flags); + if (ret) + req->context = NULL; + + dev_dbg(&cdev->gadget->dev, "tx submit --> %d\n", ret); + + return ret; +} + +static int usb9pfs_queue_rx(struct f_usb9pfs *usb9pfs, struct usb_request *req, + gfp_t gfp_flags) +{ + struct usb_composite_dev *cdev = usb9pfs->function.config->cdev; + int ret; + + ret = usb_ep_queue(usb9pfs->out_ep, req, gfp_flags); + + dev_dbg(&cdev->gadget->dev, "rx submit --> %d\n", ret); + + return ret; +} + +static int usb9pfs_transmit(struct f_usb9pfs *usb9pfs, struct p9_req_t *p9_req) +{ + int ret = 0; + + guard(spinlock_irqsave)(&usb9pfs->lock); + + ret = usb9pfs_queue_tx(usb9pfs, p9_req, GFP_ATOMIC); + if (ret) + return ret; + + list_del(&p9_req->req_list); + + p9_req_get(p9_req); + + return ret; +} + +static void usb9pfs_tx_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_usb9pfs *usb9pfs = ep->driver_data; + struct usb_composite_dev *cdev = usb9pfs->function.config->cdev; + struct p9_req_t *p9_tx_req = req->context; + unsigned long flags; + + /* reset zero packages */ + req->zero = 0; + + if (req->status) { + dev_err(&cdev->gadget->dev, "%s usb9pfs complete --> %d, %d/%d\n", + ep->name, req->status, req->actual, req->length); + return; + } + + dev_dbg(&cdev->gadget->dev, "%s usb9pfs complete --> %d, %d/%d\n", + ep->name, req->status, req->actual, req->length); + + spin_lock_irqsave(&usb9pfs->lock, flags); + WRITE_ONCE(p9_tx_req->status, REQ_STATUS_SENT); + + p9_req_put(usb9pfs->client, p9_tx_req); + + req->context = NULL; + + spin_unlock_irqrestore(&usb9pfs->lock, flags); + + complete(&usb9pfs->send); +} + +static struct p9_req_t *usb9pfs_rx_header(struct f_usb9pfs *usb9pfs, void *buf) +{ + struct p9_req_t *p9_rx_req; + struct p9_fcall rc; + int ret; + + /* start by reading header */ + rc.sdata = buf; + rc.offset = 0; + rc.capacity = P9_HDRSZ; + rc.size = P9_HDRSZ; + + p9_debug(P9_DEBUG_TRANS, "mux %p got %zu bytes\n", usb9pfs, + rc.capacity - rc.offset); + + ret = p9_parse_header(&rc, &rc.size, NULL, NULL, 0); + if (ret) { + p9_debug(P9_DEBUG_ERROR, + "error parsing header: %d\n", ret); + return NULL; + } + + p9_debug(P9_DEBUG_TRANS, + "mux %p pkt: size: %d bytes tag: %d\n", + usb9pfs, rc.size, rc.tag); + + p9_rx_req = p9_tag_lookup(usb9pfs->client, rc.tag); + if (!p9_rx_req || p9_rx_req->status != REQ_STATUS_SENT) { + p9_debug(P9_DEBUG_ERROR, "Unexpected packet tag %d\n", rc.tag); + return NULL; + } + + if (rc.size > p9_rx_req->rc.capacity) { + p9_debug(P9_DEBUG_ERROR, + "requested packet size too big: %d for tag %d with capacity %zd\n", + rc.size, rc.tag, p9_rx_req->rc.capacity); + p9_req_put(usb9pfs->client, p9_rx_req); + return NULL; + } + + if (!p9_rx_req->rc.sdata) { + p9_debug(P9_DEBUG_ERROR, + "No recv fcall for tag %d (req %p), disconnecting!\n", + rc.tag, p9_rx_req); + p9_req_put(usb9pfs->client, p9_rx_req); + return NULL; + } + + return p9_rx_req; +} + +static void usb9pfs_rx_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_usb9pfs *usb9pfs = ep->driver_data; + struct usb_composite_dev *cdev = usb9pfs->function.config->cdev; + struct p9_req_t *p9_rx_req; + + if (req->status) { + dev_err(&cdev->gadget->dev, "%s usb9pfs complete --> %d, %d/%d\n", + ep->name, req->status, req->actual, req->length); + return; + } + + p9_rx_req = usb9pfs_rx_header(usb9pfs, req->buf); + if (!p9_rx_req) + return; + + memcpy(p9_rx_req->rc.sdata, req->buf, req->actual); + + p9_rx_req->rc.size = req->actual; + + p9_client_cb(usb9pfs->client, p9_rx_req, REQ_STATUS_RCVD); + p9_req_put(usb9pfs->client, p9_rx_req); + + complete(&usb9pfs->received); +} + +static void disable_ep(struct usb_composite_dev *cdev, struct usb_ep *ep) +{ + int value; + + value = usb_ep_disable(ep); + if (value < 0) + dev_info(&cdev->gadget->dev, + "disable %s --> %d\n", ep->name, value); +} + +static void disable_usb9pfs(struct f_usb9pfs *usb9pfs) +{ + struct usb_composite_dev *cdev = + usb9pfs->function.config->cdev; + + if (usb9pfs->in_req) { + usb_ep_free_request(usb9pfs->in_ep, usb9pfs->in_req); + usb9pfs->in_req = NULL; + } + + if (usb9pfs->out_req) { + usb_ep_free_request(usb9pfs->out_ep, usb9pfs->out_req); + usb9pfs->out_req = NULL; + } + + disable_ep(cdev, usb9pfs->in_ep); + disable_ep(cdev, usb9pfs->out_ep); + dev_dbg(&cdev->gadget->dev, "%s disabled\n", + usb9pfs->function.name); +} + +static int alloc_requests(struct usb_composite_dev *cdev, + struct f_usb9pfs *usb9pfs) +{ + int ret; + + usb9pfs->in_req = usb_ep_alloc_request(usb9pfs->in_ep, GFP_ATOMIC); + if (!usb9pfs->in_req) { + ret = -ENOENT; + goto fail; + } + + usb9pfs->out_req = alloc_ep_req(usb9pfs->out_ep, usb9pfs->buflen); + if (!usb9pfs->out_req) { + ret = -ENOENT; + goto fail_in; + } + + usb9pfs->in_req->complete = usb9pfs_tx_complete; + usb9pfs->out_req->complete = usb9pfs_rx_complete; + + /* length will be set in complete routine */ + usb9pfs->in_req->context = usb9pfs; + usb9pfs->out_req->context = usb9pfs; + + return 0; + +fail_in: + usb_ep_free_request(usb9pfs->in_ep, usb9pfs->in_req); +fail: + return ret; +} + +static int enable_endpoint(struct usb_composite_dev *cdev, + struct f_usb9pfs *usb9pfs, struct usb_ep *ep) +{ + int ret; + + ret = config_ep_by_speed(cdev->gadget, &usb9pfs->function, ep); + if (ret) + return ret; + + ret = usb_ep_enable(ep); + if (ret < 0) + return ret; + + ep->driver_data = usb9pfs; + + return 0; +} + +static int +enable_usb9pfs(struct usb_composite_dev *cdev, struct f_usb9pfs *usb9pfs) +{ + struct p9_client *client; + int ret = 0; + + ret = enable_endpoint(cdev, usb9pfs, usb9pfs->in_ep); + if (ret) + goto out; + + ret = enable_endpoint(cdev, usb9pfs, usb9pfs->out_ep); + if (ret) + goto disable_in; + + ret = alloc_requests(cdev, usb9pfs); + if (ret) + goto disable_out; + + client = usb9pfs->client; + if (client) + client->status = Connected; + + dev_dbg(&cdev->gadget->dev, "%s enabled\n", usb9pfs->function.name); + return 0; + +disable_out: + usb_ep_disable(usb9pfs->out_ep); +disable_in: + usb_ep_disable(usb9pfs->in_ep); +out: + return ret; +} + +static int p9_usbg_create(struct p9_client *client, const char *devname, char *args) +{ + struct f_usb9pfs_dev *dev; + struct f_usb9pfs *usb9pfs; + int ret = -ENOENT; + int found = 0; + + if (!devname) + return -EINVAL; + + guard(mutex)(&usb9pfs_lock); + + list_for_each_entry(dev, &usbg_instance_list, usb9pfs_instance) { + if (!strncmp(devname, dev->tag, strlen(devname))) { + if (!dev->inuse) { + dev->inuse = true; + found = 1; + break; + } + ret = -EBUSY; + break; + } + } + + if (!found) { + pr_err("no channels available for device %s\n", devname); + return ret; + } + + usb9pfs = dev->usb9pfs; + if (!usb9pfs) + return -EINVAL; + + client->trans = (void *)usb9pfs; + if (!usb9pfs->in_req) + client->status = Disconnected; + else + client->status = Connected; + usb9pfs->client = client; + + client->trans_mod->maxsize = usb9pfs->buflen; + + complete(&usb9pfs->received); + + return 0; +} + +static void usb9pfs_clear_tx(struct f_usb9pfs *usb9pfs) +{ + struct p9_req_t *req; + + guard(spinlock_irqsave)(&usb9pfs->lock); + + req = usb9pfs->in_req->context; + if (!req) + return; + + if (!req->t_err) + req->t_err = -ECONNRESET; + + p9_client_cb(usb9pfs->client, req, REQ_STATUS_ERROR); +} + +static void p9_usbg_close(struct p9_client *client) +{ + struct f_usb9pfs *usb9pfs; + struct f_usb9pfs_dev *dev; + struct f_usb9pfs_opts *opts; + + if (!client) + return; + + usb9pfs = client->trans; + if (!usb9pfs) + return; + + client->status = Disconnected; + + usb9pfs_clear_tx(usb9pfs); + + opts = container_of(usb9pfs->function.fi, + struct f_usb9pfs_opts, func_inst); + + dev = opts->dev; + + mutex_lock(&usb9pfs_lock); + dev->inuse = false; + mutex_unlock(&usb9pfs_lock); +} + +static int p9_usbg_request(struct p9_client *client, struct p9_req_t *p9_req) +{ + struct f_usb9pfs *usb9pfs = client->trans; + int ret; + + if (client->status != Connected) + return -EBUSY; + + ret = wait_for_completion_killable(&usb9pfs->received); + if (ret) + return ret; + + ret = usb9pfs_transmit(usb9pfs, p9_req); + if (ret) + return ret; + + ret = wait_for_completion_killable(&usb9pfs->send); + if (ret) + return ret; + + return usb9pfs_queue_rx(usb9pfs, usb9pfs->out_req, GFP_ATOMIC); +} + +static int p9_usbg_cancel(struct p9_client *client, struct p9_req_t *req) +{ + struct f_usb9pfs *usb9pfs = client->trans; + int ret = 1; + + p9_debug(P9_DEBUG_TRANS, "client %p req %p\n", client, req); + + guard(spinlock_irqsave)(&usb9pfs->lock); + + if (req->status == REQ_STATUS_UNSENT) { + list_del(&req->req_list); + WRITE_ONCE(req->status, REQ_STATUS_FLSHD); + p9_req_put(client, req); + ret = 0; + } + + return ret; +} + +static struct p9_trans_module p9_usbg_trans = { + .name = "usbg", + .create = p9_usbg_create, + .close = p9_usbg_close, + .request = p9_usbg_request, + .cancel = p9_usbg_cancel, + .owner = THIS_MODULE, +}; + +/*-------------------------------------------------------------------------*/ + +#define USB_PROTOCOL_9PFS 0x09 + +static struct usb_interface_descriptor usb9pfs_intf = { + .bLength = sizeof(usb9pfs_intf), + .bDescriptorType = USB_DT_INTERFACE, + + .bNumEndpoints = 2, + .bInterfaceClass = USB_CLASS_VENDOR_SPEC, + .bInterfaceSubClass = USB_SUBCLASS_VENDOR_SPEC, + .bInterfaceProtocol = USB_PROTOCOL_9PFS, + + /* .iInterface = DYNAMIC */ +}; + +/* full speed support: */ + +static struct usb_endpoint_descriptor fs_usb9pfs_source_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_endpoint_descriptor fs_usb9pfs_sink_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_descriptor_header *fs_usb9pfs_descs[] = { + (struct usb_descriptor_header *)&usb9pfs_intf, + (struct usb_descriptor_header *)&fs_usb9pfs_sink_desc, + (struct usb_descriptor_header *)&fs_usb9pfs_source_desc, + NULL, +}; + +/* high speed support: */ + +static struct usb_endpoint_descriptor hs_usb9pfs_source_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor hs_usb9pfs_sink_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(512), +}; + +static struct usb_descriptor_header *hs_usb9pfs_descs[] = { + (struct usb_descriptor_header *)&usb9pfs_intf, + (struct usb_descriptor_header *)&hs_usb9pfs_source_desc, + (struct usb_descriptor_header *)&hs_usb9pfs_sink_desc, + NULL, +}; + +/* super speed support: */ + +static struct usb_endpoint_descriptor ss_usb9pfs_source_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(1024), +}; + +static struct usb_ss_ep_comp_descriptor ss_usb9pfs_source_comp_desc = { + .bLength = USB_DT_SS_EP_COMP_SIZE, + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + .bMaxBurst = 0, + .bmAttributes = 0, + .wBytesPerInterval = 0, +}; + +static struct usb_endpoint_descriptor ss_usb9pfs_sink_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(1024), +}; + +static struct usb_ss_ep_comp_descriptor ss_usb9pfs_sink_comp_desc = { + .bLength = USB_DT_SS_EP_COMP_SIZE, + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + .bMaxBurst = 0, + .bmAttributes = 0, + .wBytesPerInterval = 0, +}; + +static struct usb_descriptor_header *ss_usb9pfs_descs[] = { + (struct usb_descriptor_header *)&usb9pfs_intf, + (struct usb_descriptor_header *)&ss_usb9pfs_source_desc, + (struct usb_descriptor_header *)&ss_usb9pfs_source_comp_desc, + (struct usb_descriptor_header *)&ss_usb9pfs_sink_desc, + (struct usb_descriptor_header *)&ss_usb9pfs_sink_comp_desc, + NULL, +}; + +/* function-specific strings: */ +static struct usb_string strings_usb9pfs[] = { + [0].s = "usb9pfs input to output", + { } /* end of list */ +}; + +static struct usb_gadget_strings stringtab_usb9pfs = { + .language = 0x0409, /* en-us */ + .strings = strings_usb9pfs, +}; + +static struct usb_gadget_strings *usb9pfs_strings[] = { + &stringtab_usb9pfs, + NULL, +}; + +/*-------------------------------------------------------------------------*/ + +static int usb9pfs_func_bind(struct usb_configuration *c, + struct usb_function *f) +{ + struct f_usb9pfs *usb9pfs = func_to_usb9pfs(f); + struct f_usb9pfs_opts *opts; + struct usb_composite_dev *cdev = c->cdev; + int ret; + int id; + + /* allocate interface ID(s) */ + id = usb_interface_id(c, f); + if (id < 0) + return id; + usb9pfs_intf.bInterfaceNumber = id; + + id = usb_string_id(cdev); + if (id < 0) + return id; + strings_usb9pfs[0].id = id; + usb9pfs_intf.iInterface = id; + + /* allocate endpoints */ + usb9pfs->in_ep = usb_ep_autoconfig(cdev->gadget, + &fs_usb9pfs_source_desc); + if (!usb9pfs->in_ep) + goto autoconf_fail; + + usb9pfs->out_ep = usb_ep_autoconfig(cdev->gadget, + &fs_usb9pfs_sink_desc); + if (!usb9pfs->out_ep) + goto autoconf_fail; + + /* support high speed hardware */ + hs_usb9pfs_source_desc.bEndpointAddress = + fs_usb9pfs_source_desc.bEndpointAddress; + hs_usb9pfs_sink_desc.bEndpointAddress = + fs_usb9pfs_sink_desc.bEndpointAddress; + + /* support super speed hardware */ + ss_usb9pfs_source_desc.bEndpointAddress = + fs_usb9pfs_source_desc.bEndpointAddress; + ss_usb9pfs_sink_desc.bEndpointAddress = + fs_usb9pfs_sink_desc.bEndpointAddress; + + ret = usb_assign_descriptors(f, fs_usb9pfs_descs, hs_usb9pfs_descs, + ss_usb9pfs_descs, ss_usb9pfs_descs); + if (ret) + return ret; + + opts = container_of(f->fi, struct f_usb9pfs_opts, func_inst); + opts->dev->usb9pfs = usb9pfs; + + dev_dbg(&cdev->gadget->dev, "%s speed %s: IN/%s, OUT/%s\n", + (gadget_is_superspeed(c->cdev->gadget) ? "super" : + (gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full")), + f->name, usb9pfs->in_ep->name, usb9pfs->out_ep->name); + + return 0; + +autoconf_fail: + ERROR(cdev, "%s: can't autoconfigure on %s\n", + f->name, cdev->gadget->name); + return -ENODEV; +} + +static void usb9pfs_func_unbind(struct usb_configuration *c, + struct usb_function *f) +{ + struct f_usb9pfs *usb9pfs = func_to_usb9pfs(f); + + disable_usb9pfs(usb9pfs); +} + +static void usb9pfs_free_func(struct usb_function *f) +{ + struct f_usb9pfs *usb9pfs = func_to_usb9pfs(f); + struct f_usb9pfs_opts *opts; + + kfree(usb9pfs); + + opts = container_of(f->fi, struct f_usb9pfs_opts, func_inst); + + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); + + usb_free_all_descriptors(f); +} + +static int usb9pfs_set_alt(struct usb_function *f, + unsigned int intf, unsigned int alt) +{ + struct f_usb9pfs *usb9pfs = func_to_usb9pfs(f); + struct usb_composite_dev *cdev = f->config->cdev; + + return enable_usb9pfs(cdev, usb9pfs); +} + +static void usb9pfs_disable(struct usb_function *f) +{ + struct f_usb9pfs *usb9pfs = func_to_usb9pfs(f); + + usb9pfs_clear_tx(usb9pfs); +} + +static struct usb_function *usb9pfs_alloc(struct usb_function_instance *fi) +{ + struct f_usb9pfs_opts *usb9pfs_opts; + struct f_usb9pfs *usb9pfs; + + usb9pfs = kzalloc(sizeof(*usb9pfs), GFP_KERNEL); + if (!usb9pfs) + return ERR_PTR(-ENOMEM); + + spin_lock_init(&usb9pfs->lock); + + init_completion(&usb9pfs->send); + init_completion(&usb9pfs->received); + + usb9pfs_opts = container_of(fi, struct f_usb9pfs_opts, func_inst); + + mutex_lock(&usb9pfs_opts->lock); + usb9pfs_opts->refcnt++; + mutex_unlock(&usb9pfs_opts->lock); + + usb9pfs->buflen = usb9pfs_opts->buflen; + + usb9pfs->function.name = "usb9pfs"; + usb9pfs->function.bind = usb9pfs_func_bind; + usb9pfs->function.unbind = usb9pfs_func_unbind; + usb9pfs->function.set_alt = usb9pfs_set_alt; + usb9pfs->function.disable = usb9pfs_disable; + usb9pfs->function.strings = usb9pfs_strings; + + usb9pfs->function.free_func = usb9pfs_free_func; + + return &usb9pfs->function; +} + +static inline struct f_usb9pfs_opts *to_f_usb9pfs_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_usb9pfs_opts, + func_inst.group); +} + +static inline struct f_usb9pfs_opts *fi_to_f_usb9pfs_opts(struct usb_function_instance *fi) +{ + return container_of(fi, struct f_usb9pfs_opts, func_inst); +} + +static void usb9pfs_attr_release(struct config_item *item) +{ + struct f_usb9pfs_opts *usb9pfs_opts = to_f_usb9pfs_opts(item); + + usb_put_function_instance(&usb9pfs_opts->func_inst); +} + +static struct configfs_item_operations usb9pfs_item_ops = { + .release = usb9pfs_attr_release, +}; + +static ssize_t f_usb9pfs_opts_buflen_show(struct config_item *item, char *page) +{ + struct f_usb9pfs_opts *opts = to_f_usb9pfs_opts(item); + int ret; + + mutex_lock(&opts->lock); + ret = sysfs_emit(page, "%d\n", opts->buflen); + mutex_unlock(&opts->lock); + + return ret; +} + +static ssize_t f_usb9pfs_opts_buflen_store(struct config_item *item, + const char *page, size_t len) +{ + struct f_usb9pfs_opts *opts = to_f_usb9pfs_opts(item); + int ret; + u32 num; + + guard(mutex)(&opts->lock); + + if (opts->refcnt) + return -EBUSY; + + ret = kstrtou32(page, 0, &num); + if (ret) + return ret; + + opts->buflen = num; + + return len; +} + +CONFIGFS_ATTR(f_usb9pfs_opts_, buflen); + +static struct configfs_attribute *usb9pfs_attrs[] = { + &f_usb9pfs_opts_attr_buflen, + NULL, +}; + +static const struct config_item_type usb9pfs_func_type = { + .ct_item_ops = &usb9pfs_item_ops, + .ct_attrs = usb9pfs_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct f_usb9pfs_dev *_usb9pfs_do_find_dev(const char *tag) +{ + struct f_usb9pfs_dev *usb9pfs_dev; + + if (!tag) + return NULL; + + list_for_each_entry(usb9pfs_dev, &usbg_instance_list, usb9pfs_instance) { + if (strcmp(usb9pfs_dev->tag, tag) == 0) + return usb9pfs_dev; + } + + return NULL; +} + +static int usb9pfs_tag_instance(struct f_usb9pfs_dev *dev, const char *tag) +{ + struct f_usb9pfs_dev *existing; + int ret = 0; + + guard(mutex)(&usb9pfs_lock); + + existing = _usb9pfs_do_find_dev(tag); + if (!existing) + strscpy(dev->tag, tag, ARRAY_SIZE(dev->tag)); + else if (existing != dev) + ret = -EBUSY; + + return ret; +} + +static int usb9pfs_set_inst_tag(struct usb_function_instance *fi, const char *tag) +{ + if (strlen(tag) >= sizeof_field(struct f_usb9pfs_dev, tag)) + return -ENAMETOOLONG; + return usb9pfs_tag_instance(fi_to_f_usb9pfs_opts(fi)->dev, tag); +} + +static void usb9pfs_free_instance(struct usb_function_instance *fi) +{ + struct f_usb9pfs_opts *usb9pfs_opts = + container_of(fi, struct f_usb9pfs_opts, func_inst); + struct f_usb9pfs_dev *dev = usb9pfs_opts->dev; + + mutex_lock(&usb9pfs_lock); + list_del(&dev->usb9pfs_instance); + mutex_unlock(&usb9pfs_lock); + + kfree(usb9pfs_opts); +} + +static struct usb_function_instance *usb9pfs_alloc_instance(void) +{ + struct f_usb9pfs_opts *usb9pfs_opts; + struct f_usb9pfs_dev *dev; + + usb9pfs_opts = kzalloc(sizeof(*usb9pfs_opts), GFP_KERNEL); + if (!usb9pfs_opts) + return ERR_PTR(-ENOMEM); + + mutex_init(&usb9pfs_opts->lock); + + usb9pfs_opts->func_inst.set_inst_name = usb9pfs_set_inst_tag; + usb9pfs_opts->func_inst.free_func_inst = usb9pfs_free_instance; + + usb9pfs_opts->buflen = DEFAULT_BUFLEN; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (IS_ERR(dev)) { + kfree(usb9pfs_opts); + return ERR_CAST(dev); + } + + usb9pfs_opts->dev = dev; + dev->opts = usb9pfs_opts; + + config_group_init_type_name(&usb9pfs_opts->func_inst.group, "", + &usb9pfs_func_type); + + mutex_lock(&usb9pfs_lock); + list_add_tail(&dev->usb9pfs_instance, &usbg_instance_list); + mutex_unlock(&usb9pfs_lock); + + return &usb9pfs_opts->func_inst; +} +DECLARE_USB_FUNCTION(usb9pfs, usb9pfs_alloc_instance, usb9pfs_alloc); + +static int __init usb9pfs_modinit(void) +{ + int ret; + + INIT_LIST_HEAD(&usbg_instance_list); + + ret = usb_function_register(&usb9pfsusb_func); + if (!ret) + v9fs_register_trans(&p9_usbg_trans); + + return ret; +} + +static void __exit usb9pfs_modexit(void) +{ + usb_function_unregister(&usb9pfsusb_func); + v9fs_unregister_trans(&p9_usbg_trans); +} + +module_init(usb9pfs_modinit); +module_exit(usb9pfs_modexit); + +MODULE_ALIAS_9P("usbg"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("USB gadget 9pfs transport"); +MODULE_AUTHOR("Michael Grzeschik"); From 673f0c3ffc75166317ca5edb66ff35eaa6a12149 Mon Sep 17 00:00:00 2001 From: Michael Grzeschik Date: Sun, 1 Sep 2024 21:11:18 +0200 Subject: [PATCH 100/145] tools: usb: p9_fwd: add usb gadget packet forwarder script This patch is adding an small python tool to forward 9pfs requests from the USB gadget to an existing 9pfs TCP server. Since currently all 9pfs servers lack support for the usb transport this tool is an useful helper to get started. Refer the Documentation section "USBG Example" in Documentation/filesystems/9p.rst on how to use it. Signed-off-by: Jan Luebbe Signed-off-by: Michael Grzeschik Tested-by: Andrzej Pietrasiewicz Link: https://lore.kernel.org/r/20240116-ml-topic-u9p-v12-3-9a27de5160e0@pengutronix.de Signed-off-by: Greg Kroah-Hartman --- Documentation/filesystems/9p.rst | 41 ++++++ tools/usb/p9_fwd.py | 243 +++++++++++++++++++++++++++++++ 2 files changed, 284 insertions(+) create mode 100755 tools/usb/p9_fwd.py diff --git a/Documentation/filesystems/9p.rst b/Documentation/filesystems/9p.rst index 10cf79dc287f..2cc85f3e8659 100644 --- a/Documentation/filesystems/9p.rst +++ b/Documentation/filesystems/9p.rst @@ -67,6 +67,47 @@ To mount a 9p FS on a USB Host accessible via the gadget as root filesystem:: where is the tag associated by the usb gadget transport. It is defined by the configfs instance name. +USBG Example +============ + +The USB host exports a filesystem, while the gadget on the USB device +side makes it mountable. + +Diod (9pfs server) and the forwarder are on the development host, where +the root filesystem is actually stored. The gadget is initialized during +boot (or later) on the embedded board. Then the forwarder will find it +on the USB bus and start forwarding requests. + +In this case the 9p requests come from the device and are handled by the +host. The reason is that USB device ports are normally not available on +PCs, so a connection in the other direction would not work. + +When using the usbg transport, for now there is no native usb host +service capable to handle the requests from the gadget driver. For +this we have to use the extra python tool p9_fwd.py from tools/usb. + +Just start the 9pfs capable network server like diod/nfs-ganesha e.g.: + + $ diod -f -n -d 0 -S -l 0.0.0.0:9999 -e $PWD + +Optionaly scan your bus if there are more then one usbg gadgets to find their path: + + $ python $kernel_dir/tools/usb/p9_fwd.py list + + Bus | Addr | Manufacturer | Product | ID | Path + --- | ---- | ---------------- | ---------------- | --------- | ---- + 2 | 67 | unknown | unknown | 1d6b:0109 | 2-1.1.2 + 2 | 68 | unknown | unknown | 1d6b:0109 | 2-1.1.3 + +Then start the python transport: + + $ python $kernel_dir/tools/usb/p9_fwd.py --path 2-1.1.2 connect -p 9999 + +After that the gadget driver can be used as described above. + +One use-case is to use it as an alternative to NFS root booting during +the development of embedded Linux devices. + Options ======= diff --git a/tools/usb/p9_fwd.py b/tools/usb/p9_fwd.py new file mode 100755 index 000000000000..12c76cbb046b --- /dev/null +++ b/tools/usb/p9_fwd.py @@ -0,0 +1,243 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +import argparse +import errno +import logging +import socket +import struct +import time + +import usb.core +import usb.util + + +def path_from_usb_dev(dev): + """Takes a pyUSB device as argument and returns a string. + The string is a Path representation of the position of the USB device on the USB bus tree. + + This path is used to find a USB device on the bus or all devices connected to a HUB. + The path is made up of the number of the USB controller followed be the ports of the HUB tree.""" + if dev.port_numbers: + dev_path = ".".join(str(i) for i in dev.port_numbers) + return f"{dev.bus}-{dev_path}" + return "" + + +HEXDUMP_FILTER = "".join(chr(x).isprintable() and chr(x) or "." for x in range(128)) + "." * 128 + + +class Forwarder: + @staticmethod + def _log_hexdump(data): + if not logging.root.isEnabledFor(logging.TRACE): + return + L = 16 + for c in range(0, len(data), L): + chars = data[c : c + L] + dump = " ".join(f"{x:02x}" for x in chars) + printable = "".join(HEXDUMP_FILTER[x] for x in chars) + line = f"{c:08x} {dump:{L*3}s} |{printable:{L}s}|" + logging.root.log(logging.TRACE, "%s", line) + + def __init__(self, server, vid, pid, path): + self.stats = { + "c2s packets": 0, + "c2s bytes": 0, + "s2c packets": 0, + "s2c bytes": 0, + } + self.stats_logged = time.monotonic() + + def find_filter(dev): + dev_path = path_from_usb_dev(dev) + if path is not None: + return dev_path == path + return True + + dev = usb.core.find(idVendor=vid, idProduct=pid, custom_match=find_filter) + if dev is None: + raise ValueError("Device not found") + + logging.info(f"found device: {dev.bus}/{dev.address} located at {path_from_usb_dev(dev)}") + + # dev.set_configuration() is not necessary since g_multi has only one + usb9pfs = None + # g_multi adds 9pfs as last interface + cfg = dev.get_active_configuration() + for intf in cfg: + # we have to detach the usb-storage driver from multi gadget since + # stall option could be set, which will lead to spontaneous port + # resets and our transfers will run dead + if intf.bInterfaceClass == 0x08: + if dev.is_kernel_driver_active(intf.bInterfaceNumber): + dev.detach_kernel_driver(intf.bInterfaceNumber) + + if intf.bInterfaceClass == 0xFF and intf.bInterfaceSubClass == 0xFF and intf.bInterfaceProtocol == 0x09: + usb9pfs = intf + if usb9pfs is None: + raise ValueError("Interface not found") + + logging.info(f"claiming interface:\n{usb9pfs}") + usb.util.claim_interface(dev, usb9pfs.bInterfaceNumber) + ep_out = usb.util.find_descriptor( + usb9pfs, + custom_match=lambda e: usb.util.endpoint_direction(e.bEndpointAddress) == usb.util.ENDPOINT_OUT, + ) + assert ep_out is not None + ep_in = usb.util.find_descriptor( + usb9pfs, + custom_match=lambda e: usb.util.endpoint_direction(e.bEndpointAddress) == usb.util.ENDPOINT_IN, + ) + assert ep_in is not None + logging.info("interface claimed") + + self.ep_out = ep_out + self.ep_in = ep_in + self.dev = dev + + # create and connect socket + self.s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) + self.s.connect(server) + + logging.info("connected to server") + + def c2s(self): + """forward a request from the USB client to the TCP server""" + data = None + while data is None: + try: + logging.log(logging.TRACE, "c2s: reading") + data = self.ep_in.read(self.ep_in.wMaxPacketSize) + except usb.core.USBTimeoutError: + logging.log(logging.TRACE, "c2s: reading timed out") + continue + except usb.core.USBError as e: + if e.errno == errno.EIO: + logging.debug("c2s: reading failed with %s, retrying", repr(e)) + time.sleep(0.5) + continue + logging.error("c2s: reading failed with %s, aborting", repr(e)) + raise + size = struct.unpack(" 0 + data = data[written:] + if size % self.ep_out.wMaxPacketSize == 0: + logging.log(logging.TRACE, "sending zero length packet") + self.ep_out.write(b"") + logging.debug("s2c: forwarded %i bytes", size) + self.stats["s2c packets"] += 1 + self.stats["s2c bytes"] += size + + def log_stats(self): + logging.info("statistics:") + for k, v in self.stats.items(): + logging.info(f" {k+':':14s} {v}") + + def log_stats_interval(self, interval=5): + if (time.monotonic() - self.stats_logged) < interval: + return + + self.log_stats() + self.stats_logged = time.monotonic() + + +def try_get_usb_str(dev, name): + try: + with open(f"/sys/bus/usb/devices/{dev.bus}-{dev.address}/{name}") as f: + return f.read().strip() + except FileNotFoundError: + return None + + +def list_usb(args): + vid, pid = [int(x, 16) for x in args.id.split(":", 1)] + + print("Bus | Addr | Manufacturer | Product | ID | Path") + print("--- | ---- | ---------------- | ---------------- | --------- | ----") + for dev in usb.core.find(find_all=True, idVendor=vid, idProduct=pid): + path = path_from_usb_dev(dev) or "" + manufacturer = try_get_usb_str(dev, "manufacturer") or "unknown" + product = try_get_usb_str(dev, "product") or "unknown" + print( + f"{dev.bus:3} | {dev.address:4} | {manufacturer:16} | {product:16} | {dev.idVendor:04x}:{dev.idProduct:04x} | {path:18}" + ) + + +def connect(args): + vid, pid = [int(x, 16) for x in args.id.split(":", 1)] + + f = Forwarder(server=(args.server, args.port), vid=vid, pid=pid, path=args.path) + + try: + while True: + f.c2s() + f.s2c() + f.log_stats_interval() + finally: + f.log_stats() + + +def main(): + parser = argparse.ArgumentParser( + description="Forward 9PFS requests from USB to TCP", + ) + + parser.add_argument("--id", type=str, default="1d6b:0109", help="vid:pid of target device") + parser.add_argument("--path", type=str, required=False, help="path of target device") + parser.add_argument("-v", "--verbose", action="count", default=0) + + subparsers = parser.add_subparsers() + subparsers.required = True + subparsers.dest = "command" + + parser_list = subparsers.add_parser("list", help="List all connected 9p gadgets") + parser_list.set_defaults(func=list_usb) + + parser_connect = subparsers.add_parser( + "connect", help="Forward messages between the usb9pfs gadget and the 9p server" + ) + parser_connect.set_defaults(func=connect) + connect_group = parser_connect.add_argument_group() + connect_group.required = True + parser_connect.add_argument("-s", "--server", type=str, default="127.0.0.1", help="server hostname") + parser_connect.add_argument("-p", "--port", type=int, default=564, help="server port") + + args = parser.parse_args() + + logging.TRACE = logging.DEBUG - 5 + logging.addLevelName(logging.TRACE, "TRACE") + + if args.verbose >= 2: + level = logging.TRACE + elif args.verbose: + level = logging.DEBUG + else: + level = logging.INFO + logging.basicConfig(level=level, format="%(asctime)-15s %(levelname)-8s %(message)s") + + args.func(args) + + +if __name__ == "__main__": + main() From b022041ea9ef7a54becbc1c06717000bfcd8266d Mon Sep 17 00:00:00 2001 From: Chen Ni Date: Tue, 3 Sep 2024 15:35:38 +0800 Subject: [PATCH 101/145] usb: cdns2: Convert comma to semicolon Replace a comma between expression statements by a semicolon. Signed-off-by: Chen Ni Link: https://lore.kernel.org/r/20240903073538.780996-1-nichen@iscas.ac.cn Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/cdns2/cdns2-gadget.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/udc/cdns2/cdns2-gadget.c b/drivers/usb/gadget/udc/cdns2/cdns2-gadget.c index 0eed0e03842c..aca89730f065 100644 --- a/drivers/usb/gadget/udc/cdns2/cdns2-gadget.c +++ b/drivers/usb/gadget/udc/cdns2/cdns2-gadget.c @@ -2033,8 +2033,8 @@ static void cdns2_quiesce(struct cdns2_device *pdev) set_reg_bit_8(&pdev->usb_regs->usbcs, USBCS_DISCON); /* Disable interrupt. */ - writeb(0, &pdev->interrupt_regs->extien), - writeb(0, &pdev->interrupt_regs->usbien), + writeb(0, &pdev->interrupt_regs->extien); + writeb(0, &pdev->interrupt_regs->usbien); writew(0, &pdev->adma_regs->ep_ien); /* Clear interrupt line. */ From d40ae4cdd9a400dea9dff3408b8c8983c45e943f Mon Sep 17 00:00:00 2001 From: Xu Yang Date: Tue, 3 Sep 2024 15:58:09 +0800 Subject: [PATCH 102/145] dt-bindings: phy: mxs-usb-phy: add nxp,sim property i.MX7ULP need properly set System Integration Module(SIM) module to make usb wakeup work well. This will add a "nxp,sim" property. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Xu Yang Link: https://lore.kernel.org/r/20240903075810.1196928-1-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman --- .../devicetree/bindings/phy/fsl,mxs-usbphy.yaml | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/fsl,mxs-usbphy.yaml b/Documentation/devicetree/bindings/phy/fsl,mxs-usbphy.yaml index f4b1ca2fb562..ce665a2779b7 100644 --- a/Documentation/devicetree/bindings/phy/fsl,mxs-usbphy.yaml +++ b/Documentation/devicetree/bindings/phy/fsl,mxs-usbphy.yaml @@ -87,6 +87,12 @@ properties: maximum: 119 default: 100 + nxp,sim: + description: + The system integration module (SIM) provides system control and chip + configuration registers. + $ref: /schemas/types.yaml#/definitions/phandle + required: - compatible - reg @@ -110,6 +116,17 @@ allOf: required: - fsl,anatop + - if: + properties: + compatible: + const: fsl,imx7ulp-usbphy + then: + required: + - nxp,sim + else: + properties: + nxp,sim: false + additionalProperties: false examples: From 9313d139aa25e572d860f6f673b73a20f32d7f93 Mon Sep 17 00:00:00 2001 From: Andrey Konovalov Date: Wed, 4 Sep 2024 03:30:51 +0200 Subject: [PATCH 103/145] usb: gadget: dummy_hcd: execute hrtimer callback in softirq context Commit a7f3813e589f ("usb: gadget: dummy_hcd: Switch to hrtimer transfer scheduler") switched dummy_hcd to use hrtimer and made the timer's callback be executed in the hardirq context. With that change, __usb_hcd_giveback_urb now gets executed in the hardirq context, which causes problems for KCOV and KMSAN. One problem is that KCOV now is unable to collect coverage from the USB code that gets executed from the dummy_hcd's timer callback, as KCOV cannot collect coverage in the hardirq context. Another problem is that the dummy_hcd hrtimer might get triggered in the middle of a softirq with KCOV remote coverage collection enabled, and that causes a WARNING in KCOV, as reported by syzbot. (I sent a separate patch to shut down this WARNING, but that doesn't fix the other two issues.) Finally, KMSAN appears to ignore tracking memory copying operations that happen in the hardirq context, which causes false positive kernel-infoleaks, as reported by syzbot. Change the hrtimer in dummy_hcd to execute the callback in the softirq context. Reported-by: syzbot+2388cdaeb6b10f0c13ac@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=2388cdaeb6b10f0c13ac Reported-by: syzbot+17ca2339e34a1d863aad@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=17ca2339e34a1d863aad Reported-by: syzbot+c793a7eca38803212c61@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=c793a7eca38803212c61 Reported-by: syzbot+1e6e0b916b211bee1bd6@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=1e6e0b916b211bee1bd6 Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-lkp/202406141323.413a90d2-lkp@intel.com Fixes: a7f3813e589f ("usb: gadget: dummy_hcd: Switch to hrtimer transfer scheduler") Cc: stable@vger.kernel.org Acked-by: Marcello Sylvester Bauer Signed-off-by: Andrey Konovalov Reported-by: syzbot+edd9fe0d3a65b14588d5@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=edd9fe0d3a65b14588d5 Link: https://lore.kernel.org/r/20240904013051.4409-1-andrey.konovalov@linux.dev Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/dummy_hcd.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index f37b0d8386c1..ff7bee78bcc4 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -1304,7 +1304,8 @@ static int dummy_urb_enqueue( /* kick the scheduler, it'll do the rest */ if (!hrtimer_active(&dum_hcd->timer)) - hrtimer_start(&dum_hcd->timer, ns_to_ktime(DUMMY_TIMER_INT_NSECS), HRTIMER_MODE_REL); + hrtimer_start(&dum_hcd->timer, ns_to_ktime(DUMMY_TIMER_INT_NSECS), + HRTIMER_MODE_REL_SOFT); done: spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); @@ -1325,7 +1326,7 @@ static int dummy_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) rc = usb_hcd_check_unlink_urb(hcd, urb, status); if (!rc && dum_hcd->rh_state != DUMMY_RH_RUNNING && !list_empty(&dum_hcd->urbp_list)) - hrtimer_start(&dum_hcd->timer, ns_to_ktime(0), HRTIMER_MODE_REL); + hrtimer_start(&dum_hcd->timer, ns_to_ktime(0), HRTIMER_MODE_REL_SOFT); spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); return rc; @@ -1995,7 +1996,8 @@ return_urb: dum_hcd->udev = NULL; } else if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { /* want a 1 msec delay here */ - hrtimer_start(&dum_hcd->timer, ns_to_ktime(DUMMY_TIMER_INT_NSECS), HRTIMER_MODE_REL); + hrtimer_start(&dum_hcd->timer, ns_to_ktime(DUMMY_TIMER_INT_NSECS), + HRTIMER_MODE_REL_SOFT); } spin_unlock_irqrestore(&dum->lock, flags); @@ -2389,7 +2391,7 @@ static int dummy_bus_resume(struct usb_hcd *hcd) dum_hcd->rh_state = DUMMY_RH_RUNNING; set_link_state(dum_hcd); if (!list_empty(&dum_hcd->urbp_list)) - hrtimer_start(&dum_hcd->timer, ns_to_ktime(0), HRTIMER_MODE_REL); + hrtimer_start(&dum_hcd->timer, ns_to_ktime(0), HRTIMER_MODE_REL_SOFT); hcd->state = HC_STATE_RUNNING; } spin_unlock_irq(&dum_hcd->dum->lock); @@ -2467,7 +2469,7 @@ static DEVICE_ATTR_RO(urbs); static int dummy_start_ss(struct dummy_hcd *dum_hcd) { - hrtimer_init(&dum_hcd->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + hrtimer_init(&dum_hcd->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_SOFT); dum_hcd->timer.function = dummy_timer; dum_hcd->rh_state = DUMMY_RH_RUNNING; dum_hcd->stream_en_ep = 0; @@ -2497,7 +2499,7 @@ static int dummy_start(struct usb_hcd *hcd) return dummy_start_ss(dum_hcd); spin_lock_init(&dum_hcd->dum->lock); - hrtimer_init(&dum_hcd->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + hrtimer_init(&dum_hcd->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_SOFT); dum_hcd->timer.function = dummy_timer; dum_hcd->rh_state = DUMMY_RH_RUNNING; From 9044ad57b60b0556d42b6f8aa218a68865e810a4 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Thu, 5 Sep 2024 17:32:49 +0300 Subject: [PATCH 104/145] xhci: dbc: Fix STALL transfer event handling MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Don't flush all pending DbC data requests when an endpoint halts. An endpoint may halt and xHC DbC triggers a STALL error event if there's an issue with a bulk data transfer. The transfer should restart once xHC DbC receives a ClearFeature(ENDPOINT_HALT) request from the host. Once xHC DbC restarts it will start from the TRB pointed to by dequeue field in the endpoint context, which might be the same TRB we got the STALL event for. Turn the TRB to a no-op in this case to make sure xHC DbC doesn't reuse and tries to retransmit this same TRB after we already handled it, and gave its corresponding data request back. Other STALL events might be completely bogus. Lukasz Bartosik discovered that xHC DbC might issue spurious STALL events if hosts sends a ClearFeature(ENDPOINT_HALT) request to non-halted endpoints even without any active bulk transfers. Assume STALL event is spurious if it reports 0 bytes transferred, and the endpoint stopped on the STALLED TRB. Don't give back the data request corresponding to the TRB in this case. The halted status is per endpoint. Track it with a per endpoint flag instead of the driver invented DbC wide DS_STALLED state. DbC remains in DbC-Configured state even if endpoints halt. There is no Stalled state in the DbC Port state Machine (xhci section 7.6.6) Reported-by: Łukasz Bartosik Closes: https://lore.kernel.org/linux-usb/20240725074857.623299-1-ukaszb@chromium.org/ Tested-by: Łukasz Bartosik Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240905143300.1959279-2-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-dbgcap.c | 133 ++++++++++++++++++++------------- drivers/usb/host/xhci-dbgcap.h | 2 +- 2 files changed, 83 insertions(+), 52 deletions(-) diff --git a/drivers/usb/host/xhci-dbgcap.c b/drivers/usb/host/xhci-dbgcap.c index 161c09953c4e..241d7aa1fbc2 100644 --- a/drivers/usb/host/xhci-dbgcap.c +++ b/drivers/usb/host/xhci-dbgcap.c @@ -173,16 +173,18 @@ static void xhci_dbc_giveback(struct dbc_request *req, int status) spin_lock(&dbc->lock); } -static void xhci_dbc_flush_single_request(struct dbc_request *req) +static void trb_to_noop(union xhci_trb *trb) { - union xhci_trb *trb = req->trb; - trb->generic.field[0] = 0; trb->generic.field[1] = 0; trb->generic.field[2] = 0; trb->generic.field[3] &= cpu_to_le32(TRB_CYCLE); trb->generic.field[3] |= cpu_to_le32(TRB_TYPE(TRB_TR_NOOP)); +} +static void xhci_dbc_flush_single_request(struct dbc_request *req) +{ + trb_to_noop(req->trb); xhci_dbc_giveback(req, -ESHUTDOWN); } @@ -649,7 +651,6 @@ static void xhci_dbc_stop(struct xhci_dbc *dbc) case DS_DISABLED: return; case DS_CONFIGURED: - case DS_STALLED: if (dbc->driver->disconnect) dbc->driver->disconnect(dbc); break; @@ -669,6 +670,23 @@ static void xhci_dbc_stop(struct xhci_dbc *dbc) pm_runtime_put_sync(dbc->dev); /* note, was self.controller */ } +static void +handle_ep_halt_changes(struct xhci_dbc *dbc, struct dbc_ep *dep, bool halted) +{ + if (halted) { + dev_info(dbc->dev, "DbC Endpoint halted\n"); + dep->halted = 1; + + } else if (dep->halted) { + dev_info(dbc->dev, "DbC Endpoint halt cleared\n"); + dep->halted = 0; + + if (!list_empty(&dep->list_pending)) + writel(DBC_DOOR_BELL_TARGET(dep->direction), + &dbc->regs->doorbell); + } +} + static void dbc_handle_port_status(struct xhci_dbc *dbc, union xhci_trb *event) { @@ -697,6 +715,7 @@ static void dbc_handle_xfer_event(struct xhci_dbc *dbc, union xhci_trb *event) struct xhci_ring *ring; int ep_id; int status; + struct xhci_ep_ctx *ep_ctx; u32 comp_code; size_t remain_length; struct dbc_request *req = NULL, *r; @@ -706,8 +725,30 @@ static void dbc_handle_xfer_event(struct xhci_dbc *dbc, union xhci_trb *event) ep_id = TRB_TO_EP_ID(le32_to_cpu(event->generic.field[3])); dep = (ep_id == EPID_OUT) ? get_out_ep(dbc) : get_in_ep(dbc); + ep_ctx = (ep_id == EPID_OUT) ? + dbc_bulkout_ctx(dbc) : dbc_bulkin_ctx(dbc); ring = dep->ring; + /* Match the pending request: */ + list_for_each_entry(r, &dep->list_pending, list_pending) { + if (r->trb_dma == event->trans_event.buffer) { + req = r; + break; + } + if (r->status == -COMP_STALL_ERROR) { + dev_warn(dbc->dev, "Give back stale stalled req\n"); + ring->num_trbs_free++; + xhci_dbc_giveback(r, 0); + } + } + + if (!req) { + dev_warn(dbc->dev, "no matched request\n"); + return; + } + + trace_xhci_dbc_handle_transfer(ring, &req->trb->generic); + switch (comp_code) { case COMP_SUCCESS: remain_length = 0; @@ -718,31 +759,49 @@ static void dbc_handle_xfer_event(struct xhci_dbc *dbc, union xhci_trb *event) case COMP_TRB_ERROR: case COMP_BABBLE_DETECTED_ERROR: case COMP_USB_TRANSACTION_ERROR: - case COMP_STALL_ERROR: dev_warn(dbc->dev, "tx error %d detected\n", comp_code); status = -comp_code; break; + case COMP_STALL_ERROR: + dev_warn(dbc->dev, "Stall error at bulk TRB %llx, remaining %zu, ep deq %llx\n", + event->trans_event.buffer, remain_length, ep_ctx->deq); + status = 0; + dep->halted = 1; + + /* + * xHC DbC may trigger a STALL bulk xfer event when host sends a + * ClearFeature(ENDPOINT_HALT) request even if there wasn't an + * active bulk transfer. + * + * Don't give back this transfer request as hardware will later + * start processing TRBs starting from this 'STALLED' TRB, + * causing TRBs and requests to be out of sync. + * + * If STALL event shows some bytes were transferred then assume + * it's an actual transfer issue and give back the request. + * In this case mark the TRB as No-Op to avoid hw from using the + * TRB again. + */ + + if ((ep_ctx->deq & ~TRB_CYCLE) == event->trans_event.buffer) { + dev_dbg(dbc->dev, "Ep stopped on Stalled TRB\n"); + if (remain_length == req->length) { + dev_dbg(dbc->dev, "Spurious stall event, keep req\n"); + req->status = -COMP_STALL_ERROR; + req->actual = 0; + return; + } + dev_dbg(dbc->dev, "Give back stalled req, but turn TRB to No-op\n"); + trb_to_noop(req->trb); + } + break; + default: dev_err(dbc->dev, "unknown tx error %d\n", comp_code); status = -comp_code; break; } - /* Match the pending request: */ - list_for_each_entry(r, &dep->list_pending, list_pending) { - if (r->trb_dma == event->trans_event.buffer) { - req = r; - break; - } - } - - if (!req) { - dev_warn(dbc->dev, "no matched request\n"); - return; - } - - trace_xhci_dbc_handle_transfer(ring, &req->trb->generic); - ring->num_trbs_free++; req->actual = req->length - remain_length; xhci_dbc_giveback(req, status); @@ -762,7 +821,6 @@ static void inc_evt_deq(struct xhci_ring *ring) static enum evtreturn xhci_dbc_do_handle_events(struct xhci_dbc *dbc) { dma_addr_t deq; - struct dbc_ep *dep; union xhci_trb *evt; u32 ctrl, portsc; bool update_erdp = false; @@ -814,43 +872,17 @@ static enum evtreturn xhci_dbc_do_handle_events(struct xhci_dbc *dbc) return EVT_DISC; } - /* Handle endpoint stall event: */ + /* Check and handle changes in endpoint halt status */ ctrl = readl(&dbc->regs->control); - if ((ctrl & DBC_CTRL_HALT_IN_TR) || - (ctrl & DBC_CTRL_HALT_OUT_TR)) { - dev_info(dbc->dev, "DbC Endpoint stall\n"); - dbc->state = DS_STALLED; - - if (ctrl & DBC_CTRL_HALT_IN_TR) { - dep = get_in_ep(dbc); - xhci_dbc_flush_endpoint_requests(dep); - } - - if (ctrl & DBC_CTRL_HALT_OUT_TR) { - dep = get_out_ep(dbc); - xhci_dbc_flush_endpoint_requests(dep); - } - - return EVT_DONE; - } + handle_ep_halt_changes(dbc, get_in_ep(dbc), ctrl & DBC_CTRL_HALT_IN_TR); + handle_ep_halt_changes(dbc, get_out_ep(dbc), ctrl & DBC_CTRL_HALT_OUT_TR); /* Clear DbC run change bit: */ if (ctrl & DBC_CTRL_DBC_RUN_CHANGE) { writel(ctrl, &dbc->regs->control); ctrl = readl(&dbc->regs->control); } - break; - case DS_STALLED: - ctrl = readl(&dbc->regs->control); - if (!(ctrl & DBC_CTRL_HALT_IN_TR) && - !(ctrl & DBC_CTRL_HALT_OUT_TR) && - (ctrl & DBC_CTRL_DBC_RUN)) { - dbc->state = DS_CONFIGURED; - break; - } - - return EVT_DONE; default: dev_err(dbc->dev, "Unknown DbC state %d\n", dbc->state); break; @@ -939,7 +971,6 @@ static const char * const dbc_state_strings[DS_MAX] = { [DS_ENABLED] = "enabled", [DS_CONNECTED] = "connected", [DS_CONFIGURED] = "configured", - [DS_STALLED] = "stalled", }; static ssize_t dbc_show(struct device *dev, diff --git a/drivers/usb/host/xhci-dbgcap.h b/drivers/usb/host/xhci-dbgcap.h index 0118c6288a3c..97c5dc290138 100644 --- a/drivers/usb/host/xhci-dbgcap.h +++ b/drivers/usb/host/xhci-dbgcap.h @@ -81,7 +81,6 @@ enum dbc_state { DS_ENABLED, DS_CONNECTED, DS_CONFIGURED, - DS_STALLED, DS_MAX }; @@ -90,6 +89,7 @@ struct dbc_ep { struct list_head list_pending; struct xhci_ring *ring; unsigned int direction:1; + unsigned int halted:1; }; #define DBC_QUEUE_SIZE 16 From 31128e7492dc365a9ed37577b766e36c1193d369 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Thu, 5 Sep 2024 17:32:50 +0300 Subject: [PATCH 105/145] xhci: dbc: add dbgtty request to end of list once it completes Make sure we move the requests from the read_queue to the end of the read_pool list, avoiding looping and using the same one request all the time. Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240905143300.1959279-3-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-dbgtty.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci-dbgtty.c b/drivers/usb/host/xhci-dbgtty.c index b74e98e94393..5e567b3eb4d9 100644 --- a/drivers/usb/host/xhci-dbgtty.c +++ b/drivers/usb/host/xhci-dbgtty.c @@ -346,7 +346,7 @@ static void dbc_rx_push(struct tasklet_struct *t) port->n_read = 0; } - list_move(&req->list_pool, &port->read_pool); + list_move_tail(&req->list_pool, &port->read_pool); } if (do_push) From f5985a814739c3f2b3d53cc4ee1f55928fcbc23a Mon Sep 17 00:00:00 2001 From: Yue Haibing Date: Thu, 5 Sep 2024 17:32:51 +0300 Subject: [PATCH 106/145] xhci: Remove unused function declarations Commit 674f8438c121 ("xhci: split handling halted endpoints into two steps") removed xhci_cleanup_stalled_ring() but left declaration. Commit 25355e046d29 ("xhci: use generic command timer for stop endpoint commands.") left behind xhci_stop_endpoint_command_watchdog(). Signed-off-by: Yue Haibing Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240905143300.1959279-4-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci.h | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 40aebdfb37c9..ae4b50b01284 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1904,10 +1904,6 @@ int xhci_queue_reset_ep(struct xhci_hcd *xhci, struct xhci_command *cmd, enum xhci_ep_reset_type reset_type); int xhci_queue_reset_device(struct xhci_hcd *xhci, struct xhci_command *cmd, u32 slot_id); -void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, unsigned int slot_id, - unsigned int ep_index, unsigned int stream_id, - struct xhci_td *td); -void xhci_stop_endpoint_command_watchdog(struct timer_list *t); void xhci_handle_command_timeout(struct work_struct *work); void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, unsigned int slot_id, From a1de068215198d55795736652862446e41e6e78e Mon Sep 17 00:00:00 2001 From: Niklas Neronin Date: Thu, 5 Sep 2024 17:32:52 +0300 Subject: [PATCH 107/145] usb: xhci: remove excessive isoc frame debug message spam The removed debug messages trigger each time an isoc frame is handled. In case of an error, a dedicated debug message exists. For example, a 60fps USB camera will trigger the debug message every 0.6s. Signed-off-by: Niklas Neronin Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240905143300.1959279-5-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 4ea2c3e072a9..e1c9838084bf 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -3941,10 +3941,6 @@ static int xhci_get_isoc_frame_id(struct xhci_hcd *xhci, start_frame_id = (start_frame_id >> 3) & 0x7ff; end_frame_id = (end_frame_id >> 3) & 0x7ff; - xhci_dbg(xhci, "%s: index %d, reg 0x%x start_frame_id 0x%x, end_frame_id 0x%x, start_frame 0x%x\n", - __func__, index, readl(&xhci->run_regs->microframe_index), - start_frame_id, end_frame_id, start_frame); - if (start_frame_id < end_frame_id) { if (start_frame > end_frame_id || start_frame < start_frame_id) From b0af5ae78581d0d0bc3813b7516ed75bb8626fc9 Mon Sep 17 00:00:00 2001 From: Niklas Neronin Date: Thu, 5 Sep 2024 17:32:53 +0300 Subject: [PATCH 108/145] usb: xhci: remove excessive Bulk short packet debug message Completion codes 'COMP_SUCCESS' and 'COMP_SHORT_PACKET' are the most frequently encountered completion codes. Typically, these codes do not trigger a default debug message but rather a warning that indicates a potential issue. This behavior is consistent across all transfer types with the exception of Bulk transfers. To reduce unnecessary log clutter, remove the Bulk 'COMP_SHORT_PACKET' debug message. Signed-off-by: Niklas Neronin Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240905143300.1959279-6-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index e1c9838084bf..d37eeee74960 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2521,9 +2521,6 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, td->status = 0; break; case COMP_SHORT_PACKET: - xhci_dbg(xhci, "ep %#x - asked for %d bytes, %d bytes untransferred\n", - td->urb->ep->desc.bEndpointAddress, - requested, remaining); td->status = 0; break; case COMP_STOPPED_SHORT_PACKET: From b14485d461a5571be339ba18fa168113ca36257b Mon Sep 17 00:00:00 2001 From: Niklas Neronin Date: Thu, 5 Sep 2024 17:32:54 +0300 Subject: [PATCH 109/145] usb: xhci: remove unused variables from struct 'xhci_hcd' Variables 'max_slots', 'max_ports', 'isoc_threshold' and 'event_ring_max' are never set or used. Thus, remove them. Signed-off-by: Niklas Neronin Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240905143300.1959279-7-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci.h | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index ae4b50b01284..6f8cecc789d6 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1500,13 +1500,9 @@ struct xhci_hcd { /* packed release number */ u8 sbrn; u16 hci_version; - u8 max_slots; u16 max_interrupters; - u8 max_ports; - u8 isoc_threshold; /* imod_interval in ns (I * 250ns) */ u32 imod_interval; - int event_ring_max; /* 4KB min, 128MB max */ int page_size; /* Valid values are 12 to 20, inclusive */ From 811cd6ed04b9f8658df3590cb51ec39ebf2fa8e7 Mon Sep 17 00:00:00 2001 From: Niklas Neronin Date: Thu, 5 Sep 2024 17:32:55 +0300 Subject: [PATCH 110/145] usb: xhci: make 'sbrn' a local variable Variable 'sbrn' is used to store the Serial Bus Release Number, which is then only used for a debug message. Thus, 'sbrn' can be a local variable and assigned after the primary HCD check. The SBRN debug message is only printed when a primary HCD is setup. Signed-off-by: Niklas Neronin Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240905143300.1959279-8-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 6 +++--- drivers/usb/host/xhci.h | 1 - 2 files changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index b5705ed01d83..b405cff2d600 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -525,10 +525,9 @@ static int xhci_pci_setup(struct usb_hcd *hcd) struct xhci_hcd *xhci; struct pci_dev *pdev = to_pci_dev(hcd->self.controller); int retval; + u8 sbrn; xhci = hcd_to_xhci(hcd); - if (!xhci->sbrn) - pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn); /* imod_interval is the interrupt moderation value in nanoseconds. */ xhci->imod_interval = 40000; @@ -543,7 +542,8 @@ static int xhci_pci_setup(struct usb_hcd *hcd) if (xhci->quirks & XHCI_PME_STUCK_QUIRK) xhci_pme_acpi_rtd3_enable(pdev); - xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn); + pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &sbrn); + xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int)sbrn); /* Find any debug ports */ return xhci_pci_reinit(xhci, pdev); diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 6f8cecc789d6..d41523c9b15c 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1498,7 +1498,6 @@ struct xhci_hcd { spinlock_t lock; /* packed release number */ - u8 sbrn; u16 hci_version; u16 max_interrupters; /* imod_interval in ns (I * 250ns) */ From 77d871aeddc360ccd0b0d533e2e2e57eda3975f3 Mon Sep 17 00:00:00 2001 From: Niklas Neronin Date: Thu, 5 Sep 2024 17:32:56 +0300 Subject: [PATCH 111/145] usb: xhci: add comments explaining specific interrupt behaviour HCD does not allocate or request interrupt for the xhci driver, but HCD does free and sync xhci interrupts in some cases. Add comment detailing in which cases HCD will free/sync xhci interrupts. Signed-off-by: Niklas Neronin Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240905143300.1959279-9-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index b405cff2d600..d6196c08ea87 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -93,6 +93,10 @@ static const struct xhci_driver_overrides xhci_pci_overrides __initconst = { .update_hub_device = xhci_pci_update_hub_device, }; +/* + * Primary Legacy and MSI IRQ are synced in suspend_common(). + * All MSI-X IRQs and secondary MSI IRQs should be synced here. + */ static void xhci_msix_sync_irqs(struct xhci_hcd *xhci) { struct usb_hcd *hcd = xhci_to_hcd(xhci); @@ -105,13 +109,12 @@ static void xhci_msix_sync_irqs(struct xhci_hcd *xhci) } } -/* Free any IRQs and disable MSI-X */ +/* Legacy IRQ is freed by usb_remove_hcd() or usb_hcd_pci_shutdown() */ static void xhci_cleanup_msix(struct xhci_hcd *xhci) { struct usb_hcd *hcd = xhci_to_hcd(xhci); struct pci_dev *pdev = to_pci_dev(hcd->self.controller); - /* return if using legacy interrupt */ if (hcd->irq > 0) return; From dbb2c9229da2393086da235d4ced560dabe463ea Mon Sep 17 00:00:00 2001 From: Niklas Neronin Date: Thu, 5 Sep 2024 17:32:57 +0300 Subject: [PATCH 112/145] usb: xhci: remove 'retval' from xhci_pci_resume() Remove unnecessary local 'retval' argument. Signed-off-by: Niklas Neronin Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240905143300.1959279-10-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index d6196c08ea87..526739af2070 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -786,7 +786,6 @@ static int xhci_pci_resume(struct usb_hcd *hcd, pm_message_t msg) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct pci_dev *pdev = to_pci_dev(hcd->self.controller); - int retval = 0; reset_control_reset(xhci->reset); @@ -817,8 +816,7 @@ static int xhci_pci_resume(struct usb_hcd *hcd, pm_message_t msg) if (xhci->quirks & XHCI_PME_STUCK_QUIRK) xhci_pme_quirk(hcd); - retval = xhci_resume(xhci, msg); - return retval; + return xhci_resume(xhci, msg); } static int xhci_pci_poweroff_late(struct usb_hcd *hcd, bool do_wakeup) From da6a6dcfce61f765d5a77688f4a813deb410762e Mon Sep 17 00:00:00 2001 From: Niklas Neronin Date: Thu, 5 Sep 2024 17:32:58 +0300 Subject: [PATCH 113/145] usb: xhci: adjust empty TD list handling in handle_tx_event() Introduce an initial check for an empty list prior to entering the while loop. Which enables, the implementation of distinct warnings to differentiate between scenarios where the list is initially empty and when it has been emptied during processing skipped isoc TDs. These adjustments not only simplifies the large while loop, but also facilitates future enhancements to the handle_tx_event() function. Signed-off-by: Niklas Neronin Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240905143300.1959279-11-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 51 +++++++++++++++++------------------- 1 file changed, 24 insertions(+), 27 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index d37eeee74960..a4383735b16c 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2761,35 +2761,25 @@ static int handle_tx_event(struct xhci_hcd *xhci, return 0; } - do { - /* This TRB should be in the TD at the head of this ring's - * TD list. + if (list_empty(&ep_ring->td_list)) { + /* + * Don't print wanings if ring is empty due to a stopped endpoint generating an + * extra completion event if the device was suspended. Or, a event for the last TRB + * of a short TD we already got a short event for. The short TD is already removed + * from the TD list. */ - if (list_empty(&ep_ring->td_list)) { - /* - * Don't print wanings if it's due to a stopped endpoint - * generating an extra completion event if the device - * was suspended. Or, a event for the last TRB of a - * short TD we already got a short event for. - * The short TD is already removed from the TD list. - */ - - if (!(trb_comp_code == COMP_STOPPED || - trb_comp_code == COMP_STOPPED_LENGTH_INVALID || - ep_ring->last_td_was_short)) { - xhci_warn(xhci, "WARN Event TRB for slot %u ep %d with no TDs queued?\n", - slot_id, ep_index); - } - if (ep->skip) { - ep->skip = false; - xhci_dbg(xhci, "td_list is empty while skip flag set. Clear skip flag for slot %u ep %u.\n", - slot_id, ep_index); - } - - td = NULL; - goto check_endpoint_halted; + if (trb_comp_code != COMP_STOPPED && + trb_comp_code != COMP_STOPPED_LENGTH_INVALID && + !ep_ring->last_td_was_short) { + xhci_warn(xhci, "Event TRB for slot %u ep %u with no TDs queued\n", + slot_id, ep_index); } + ep->skip = false; + goto check_endpoint_halted; + } + + do { td = list_first_entry(&ep_ring->td_list, struct xhci_td, td_list); @@ -2800,7 +2790,14 @@ static int handle_tx_event(struct xhci_hcd *xhci, if (ep->skip && usb_endpoint_xfer_isoc(&td->urb->ep->desc)) { skip_isoc_td(xhci, td, ep, status); - continue; + if (!list_empty(&ep_ring->td_list)) + continue; + + xhci_dbg(xhci, "All TDs skipped for slot %u ep %u. Clear skip flag.\n", + slot_id, ep_index); + ep->skip = false; + td = NULL; + goto check_endpoint_halted; } /* From f81dfa3b57c624c56f2bff171c431bc7f5b558f2 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Thu, 5 Sep 2024 17:32:59 +0300 Subject: [PATCH 114/145] xhci: Set quirky xHC PCI hosts to D3 _after_ stopping and freeing them. PCI xHC host should be stopped and xhci driver memory freed before putting host to PCI D3 state during PCI remove callback. Hosts with XHCI_SPURIOUS_WAKEUP quirk did this the wrong way around and set the host to D3 before calling usb_hcd_pci_remove(dev), which will access the host to stop it, and then free xhci. Fixes: f1f6d9a8b540 ("xhci: don't dereference a xhci member after removing xhci") Cc: stable@vger.kernel.org Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240905143300.1959279-12-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 526739af2070..de50f5ba60df 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -657,8 +657,10 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) void xhci_pci_remove(struct pci_dev *dev) { struct xhci_hcd *xhci; + bool set_power_d3; xhci = hcd_to_xhci(pci_get_drvdata(dev)); + set_power_d3 = xhci->quirks & XHCI_SPURIOUS_WAKEUP; xhci->xhc_state |= XHCI_STATE_REMOVING; @@ -671,11 +673,11 @@ void xhci_pci_remove(struct pci_dev *dev) xhci->shared_hcd = NULL; } - /* Workaround for spurious wakeups at shutdown with HSW */ - if (xhci->quirks & XHCI_SPURIOUS_WAKEUP) - pci_set_power_state(dev, PCI_D3hot); - usb_hcd_pci_remove(dev); + + /* Workaround for spurious wakeups at shutdown with HSW */ + if (set_power_d3) + pci_set_power_state(dev, PCI_D3hot); } EXPORT_SYMBOL_NS_GPL(xhci_pci_remove, xhci); From 9c0c11bb87b09a8b7cdc21ca1090e7b36abe9d09 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Thu, 5 Sep 2024 17:33:00 +0300 Subject: [PATCH 115/145] xhci: support setting interrupt moderation IMOD for secondary interrupters Allow creators of seconday interrupters to specify the interrupt moderation interval value in nanoseconds when creating the interrupter. If not sure what value to use then use the xhci driver default xhci->imod_interval Suggested-by: Wesley Cheng Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240905143300.1959279-13-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mem.c | 8 +++++++- drivers/usb/host/xhci.c | 4 ++-- drivers/usb/host/xhci.h | 5 ++++- 3 files changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 937ce5fd5809..d2900197a49e 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -2332,7 +2332,8 @@ xhci_add_interrupter(struct xhci_hcd *xhci, struct xhci_interrupter *ir, } struct xhci_interrupter * -xhci_create_secondary_interrupter(struct usb_hcd *hcd, unsigned int segs) +xhci_create_secondary_interrupter(struct usb_hcd *hcd, unsigned int segs, + u32 imod_interval) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct xhci_interrupter *ir; @@ -2365,6 +2366,11 @@ xhci_create_secondary_interrupter(struct usb_hcd *hcd, unsigned int segs) return NULL; } + err = xhci_set_interrupter_moderation(ir, imod_interval); + if (err) + xhci_warn(xhci, "Failed to set interrupter %d moderation to %uns\n", + i, imod_interval); + xhci_dbg(xhci, "Add secondary interrupter %d, max interrupters %d\n", i, xhci->max_interrupters); diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index a69245074395..899c0effb5d3 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -347,8 +347,8 @@ static int xhci_disable_interrupter(struct xhci_interrupter *ir) } /* interrupt moderation interval imod_interval in nanoseconds */ -static int xhci_set_interrupter_moderation(struct xhci_interrupter *ir, - u32 imod_interval) +int xhci_set_interrupter_moderation(struct xhci_interrupter *ir, + u32 imod_interval) { u32 imod; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index d41523c9b15c..1e50ebbe9514 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1826,7 +1826,8 @@ struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, void xhci_free_container_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx); struct xhci_interrupter * -xhci_create_secondary_interrupter(struct usb_hcd *hcd, unsigned int segs); +xhci_create_secondary_interrupter(struct usb_hcd *hcd, unsigned int segs, + u32 imod_interval); void xhci_remove_secondary_interrupter(struct usb_hcd *hcd, struct xhci_interrupter *ir); @@ -1866,6 +1867,8 @@ int xhci_alloc_tt_info(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_device *hdev, struct usb_tt *tt, gfp_t mem_flags); +int xhci_set_interrupter_moderation(struct xhci_interrupter *ir, + u32 imod_interval); /* xHCI ring, segment, TRB, and TD functions */ dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg, union xhci_trb *trb); From 7d47d22444bb7dc1b6d768904a22070ef35e1fc0 Mon Sep 17 00:00:00 2001 From: Junhao Xie Date: Tue, 3 Sep 2024 23:06:38 +0800 Subject: [PATCH 116/145] USB: serial: pl2303: add device id for Macrosilicon MS3020 Add the device id for the Macrosilicon MS3020 which is a PL2303HXN based device. Signed-off-by: Junhao Xie Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold --- drivers/usb/serial/pl2303.c | 1 + drivers/usb/serial/pl2303.h | 4 ++++ 2 files changed, 5 insertions(+) diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index d93f5d584557..8e327fcb222f 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -118,6 +118,7 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(SMART_VENDOR_ID, SMART_PRODUCT_ID) }, { USB_DEVICE(AT_VENDOR_ID, AT_VTKIT3_PRODUCT_ID) }, { USB_DEVICE(IBM_VENDOR_ID, IBM_PRODUCT_ID) }, + { USB_DEVICE(MACROSILICON_VENDOR_ID, MACROSILICON_MS3020_PRODUCT_ID) }, { } /* Terminating entry */ }; diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h index 732f9b13ad5d..d60eda7f6eda 100644 --- a/drivers/usb/serial/pl2303.h +++ b/drivers/usb/serial/pl2303.h @@ -171,3 +171,7 @@ /* Allied Telesis VT-Kit3 */ #define AT_VENDOR_ID 0x0caa #define AT_VTKIT3_PRODUCT_ID 0x3001 + +/* Macrosilicon MS3020 */ +#define MACROSILICON_VENDOR_ID 0x345f +#define MACROSILICON_MS3020_PRODUCT_ID 0x3020 From 7b24a3bce42b9a0cbafd1bd12de349b82c649b79 Mon Sep 17 00:00:00 2001 From: Lin Ruifeng Date: Sat, 7 Sep 2024 16:13:51 +0800 Subject: [PATCH 117/145] usb: musb: mediatek: Simplify code with dev_err_probe() The combination of dev_err() and the returned error code could be replaced by dev_err_probe() in driver's probe function. Let's, converting to dev_err_probe() to make code more simple. Signed-off-by: Lin Ruifeng Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Matthias Brugger Link: https://lore.kernel.org/r/20240907081351.19879-1-linruifeng4@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/mediatek.c | 27 +++++++++++---------------- 1 file changed, 11 insertions(+), 16 deletions(-) diff --git a/drivers/usb/musb/mediatek.c b/drivers/usb/musb/mediatek.c index 0a35aab3ab81..63c86c046b98 100644 --- a/drivers/usb/musb/mediatek.c +++ b/drivers/usb/musb/mediatek.c @@ -416,10 +416,9 @@ static int mtk_musb_probe(struct platform_device *pdev) return -ENOMEM; ret = of_platform_populate(np, NULL, NULL, dev); - if (ret) { - dev_err(dev, "failed to create child devices at %p\n", np); - return ret; - } + if (ret) + return dev_err_probe(dev, ret, + "failed to create child devices at %p\n", np); ret = mtk_musb_clks_get(glue); if (ret) @@ -448,23 +447,19 @@ static int mtk_musb_probe(struct platform_device *pdev) glue->role = USB_ROLE_NONE; break; default: - dev_err(&pdev->dev, "Error 'dr_mode' property\n"); - return -EINVAL; + return dev_err_probe(&pdev->dev, -EINVAL, + "Error 'dr_mode' property\n"); } glue->phy = devm_of_phy_get_by_index(dev, np, 0); - if (IS_ERR(glue->phy)) { - dev_err(dev, "fail to getting phy %ld\n", - PTR_ERR(glue->phy)); - return PTR_ERR(glue->phy); - } + if (IS_ERR(glue->phy)) + return dev_err_probe(dev, PTR_ERR(glue->phy), + "fail to getting phy\n"); glue->usb_phy = usb_phy_generic_register(); - if (IS_ERR(glue->usb_phy)) { - dev_err(dev, "fail to registering usb-phy %ld\n", - PTR_ERR(glue->usb_phy)); - return PTR_ERR(glue->usb_phy); - } + if (IS_ERR(glue->usb_phy)) + return dev_err_probe(dev, PTR_ERR(glue->usb_phy), + "fail to registering usb-phy\n"); glue->xceiv = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); if (IS_ERR(glue->xceiv)) { From 0088d7581b12c6b310fb57a25b7c07622655c23d Mon Sep 17 00:00:00 2001 From: Bagas Sanjaya Date: Sun, 8 Sep 2024 18:34:23 +0700 Subject: [PATCH 118/145] tools: usb: p9_fwd: wrap USBG shell command examples in literal code blocks Stephen Rothwell reported htmldocs warning when merging usb tree: Documentation/filesystems/9p.rst:99: ERROR: Unexpected indentation. That's because Sphinx tries rendering p9_fwd.py output as a grid table instead. Wrap shell commands in "USBG Example" section in literal code blocks to fix above warning and to be in line with rest of commands in the doc. Reported-by: Stephen Rothwell Closes: https://lore.kernel.org/linux-next/20240905184059.0f30ff9a@canb.auug.org.au/ Fixes: 673f0c3ffc75 ("tools: usb: p9_fwd: add usb gadget packet forwarder script") Signed-off-by: Bagas Sanjaya Acked-by: Michael Grzeschik Link: https://lore.kernel.org/r/20240908113423.158352-1-bagasdotme@gmail.com Signed-off-by: Greg Kroah-Hartman --- Documentation/filesystems/9p.rst | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/Documentation/filesystems/9p.rst b/Documentation/filesystems/9p.rst index 2cc85f3e8659..514ed13a0122 100644 --- a/Documentation/filesystems/9p.rst +++ b/Documentation/filesystems/9p.rst @@ -86,11 +86,11 @@ When using the usbg transport, for now there is no native usb host service capable to handle the requests from the gadget driver. For this we have to use the extra python tool p9_fwd.py from tools/usb. -Just start the 9pfs capable network server like diod/nfs-ganesha e.g.: +Just start the 9pfs capable network server like diod/nfs-ganesha e.g.:: $ diod -f -n -d 0 -S -l 0.0.0.0:9999 -e $PWD -Optionaly scan your bus if there are more then one usbg gadgets to find their path: +Optionaly scan your bus if there are more then one usbg gadgets to find their path:: $ python $kernel_dir/tools/usb/p9_fwd.py list @@ -99,7 +99,7 @@ Optionaly scan your bus if there are more then one usbg gadgets to find their pa 2 | 67 | unknown | unknown | 1d6b:0109 | 2-1.1.2 2 | 68 | unknown | unknown | 1d6b:0109 | 2-1.1.3 -Then start the python transport: +Then start the python transport:: $ python $kernel_dir/tools/usb/p9_fwd.py --path 2-1.1.2 connect -p 9999 From 625fa77151f00c1bd00d34d60d6f2e710b3f9aad Mon Sep 17 00:00:00 2001 From: Edward Adam Davis Date: Sun, 8 Sep 2024 17:17:41 +0800 Subject: [PATCH 119/145] USB: usbtmc: prevent kernel-usb-infoleak The syzbot reported a kernel-usb-infoleak in usbtmc_write, we need to clear the structure before filling fields. Fixes: 4ddc645f40e9 ("usb: usbtmc: Add ioctl for vendor specific write") Reported-and-tested-by: syzbot+9d34f80f841e948c3fdb@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=9d34f80f841e948c3fdb Signed-off-by: Edward Adam Davis Cc: stable Link: https://lore.kernel.org/r/tencent_9649AA6EC56EDECCA8A7D106C792D1C66B06@qq.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/usbtmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c index 6bd9fe565385..34e46ef308ab 100644 --- a/drivers/usb/class/usbtmc.c +++ b/drivers/usb/class/usbtmc.c @@ -754,7 +754,7 @@ static struct urb *usbtmc_create_urb(void) if (!urb) return NULL; - dmabuf = kmalloc(bufsize, GFP_KERNEL); + dmabuf = kzalloc(bufsize, GFP_KERNEL); if (!dmabuf) { usb_free_urb(urb); return NULL; From 64fa3bc36d3cf6b58f9981d9c5d353777de7952e Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 3 Sep 2024 21:31:36 +0300 Subject: [PATCH 120/145] usb: common: Switch to device_property_match_property_string() Replace open coded device_property_match_property_string(). Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20240903183136.3641770-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/common/common.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c index 84ec00b7966c..b7bea1015d7c 100644 --- a/drivers/usb/common/common.c +++ b/drivers/usb/common/common.c @@ -107,19 +107,18 @@ EXPORT_SYMBOL_GPL(usb_speed_string); */ enum usb_device_speed usb_get_maximum_speed(struct device *dev) { - const char *maximum_speed; + const char *p = "maximum-speed"; int ret; - ret = device_property_read_string(dev, "maximum-speed", &maximum_speed); - if (ret < 0) - return USB_SPEED_UNKNOWN; - - ret = match_string(ssp_rate, ARRAY_SIZE(ssp_rate), maximum_speed); + ret = device_property_match_property_string(dev, p, ssp_rate, ARRAY_SIZE(ssp_rate)); if (ret > 0) return USB_SPEED_SUPER_PLUS; - ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed); - return (ret < 0) ? USB_SPEED_UNKNOWN : ret; + ret = device_property_match_property_string(dev, p, speed_names, ARRAY_SIZE(speed_names)); + if (ret > 0) + return ret; + + return USB_SPEED_UNKNOWN; } EXPORT_SYMBOL_GPL(usb_get_maximum_speed); From 7793472be315c5bddbb5cabb55e61ea9a7dca755 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andreas=20K=C3=BChn?= Date: Tue, 3 Sep 2024 15:25:15 +0200 Subject: [PATCH 121/145] usb: chipidea: npcm: Fix coding style with clarification of data type MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixed coding style issue: unsigned to unsigned int. Signed-off-by: Andreas Kühn Acked-by: Peter Chen Link: https://lore.kernel.org/r/20240903132535.15554-1-andreas.kuehn@diekuehnen.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci_hdrc_npcm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/chipidea/ci_hdrc_npcm.c b/drivers/usb/chipidea/ci_hdrc_npcm.c index c89c68f41ccc..3e5e05dbda89 100644 --- a/drivers/usb/chipidea/ci_hdrc_npcm.c +++ b/drivers/usb/chipidea/ci_hdrc_npcm.c @@ -18,7 +18,7 @@ struct npcm_udc_data { struct ci_hdrc_platform_data pdata; }; -static int npcm_udc_notify_event(struct ci_hdrc *ci, unsigned event) +static int npcm_udc_notify_event(struct ci_hdrc *ci, unsigned int event) { struct device *dev = ci->dev->parent; From 77e85107a7717ecb755cf77a2752a2aadd28c4e3 Mon Sep 17 00:00:00 2001 From: Emanuele Ghidoli Date: Thu, 5 Sep 2024 08:53:28 +0200 Subject: [PATCH 122/145] usb: typec: tcpci: support edge irq TCPCI USB PHY - PTN5110 could be used with SOCs that only support the edge-triggered GPIO interrupts such as TI's K3 device AM69. Move the interrupt configuration to the firmware which would allow to accommodate edge triggered interrupts for such SOCs. In order to support the edge interrupts, register irq line in advance and keep track of occurrence during port registering. When the edge interrupts are used, it is observed that some of the interrupts are missed when tcpci_irq() is serving the current interrupt. Therefore, check the status register at the end of tcpci_irq() and re-run the function if the status is not clear i.e. pending interrupt. Signed-off-by: Emanuele Ghidoli Signed-off-by: Parth Pancholi Reviewed-by: Heikki Krogerus Reviewed-by: Francesco Dolcini Link: https://lore.kernel.org/r/20240905065328.7116-1-parth105105@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpci.c | 30 ++++++++++++++++++++---------- 1 file changed, 20 insertions(+), 10 deletions(-) diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c index a2651a2a7f2e..ed32583829be 100644 --- a/drivers/usb/typec/tcpm/tcpci.c +++ b/drivers/usb/typec/tcpm/tcpci.c @@ -707,10 +707,13 @@ irqreturn_t tcpci_irq(struct tcpci *tcpci) { u16 status; int ret; + int irq_ret; unsigned int raw; tcpci_read16(tcpci, TCPC_ALERT, &status); + irq_ret = status & tcpci->alert_mask; +process_status: /* * Clear alert status for everything except RX_STATUS, which shouldn't * be cleared until we have successfully retrieved message. @@ -783,7 +786,12 @@ irqreturn_t tcpci_irq(struct tcpci *tcpci) else if (status & TCPC_ALERT_TX_FAILED) tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_FAILED); - return IRQ_RETVAL(status & tcpci->alert_mask); + tcpci_read16(tcpci, TCPC_ALERT, &status); + + if (status & tcpci->alert_mask) + goto process_status; + + return IRQ_RETVAL(irq_ret); } EXPORT_SYMBOL_GPL(tcpci_irq); @@ -915,20 +923,22 @@ static int tcpci_probe(struct i2c_client *client) chip->data.set_orientation = err; - chip->tcpci = tcpci_register_port(&client->dev, &chip->data); - if (IS_ERR(chip->tcpci)) - return PTR_ERR(chip->tcpci); - err = devm_request_threaded_irq(&client->dev, client->irq, NULL, _tcpci_irq, - IRQF_SHARED | IRQF_ONESHOT | IRQF_TRIGGER_LOW, + IRQF_SHARED | IRQF_ONESHOT, dev_name(&client->dev), chip); - if (err < 0) { - tcpci_unregister_port(chip->tcpci); + if (err < 0) return err; - } - return 0; + /* + * Disable irq while registering port. If irq is configured as an edge + * irq this allow to keep track and process the irq as soon as it is enabled. + */ + disable_irq(client->irq); + chip->tcpci = tcpci_register_port(&client->dev, &chip->data); + enable_irq(client->irq); + + return PTR_ERR_OR_ZERO(chip->tcpci); } static void tcpci_remove(struct i2c_client *client) From 1702bec4477cc7d31adb4a760d14d33fac928b7a Mon Sep 17 00:00:00 2001 From: Pawel Laszczak Date: Fri, 6 Sep 2024 06:48:54 +0000 Subject: [PATCH 123/145] usb: cdnsp: Fix incorrect usb_request status Fix changes incorrect usb_request->status returned during disabling endpoints. Before fix the status returned during dequeuing requests while disabling endpoint was ECONNRESET. Patch change it to ESHUTDOWN. Patch fixes issue detected during testing UVC gadget. During stopping streaming the class starts dequeuing usb requests and controller driver returns the -ECONNRESET status. After completion requests the class or application "uvc-gadget" try to queue this request again. Changing this status to ESHUTDOWN cause that UVC assumes that endpoint is disabled, or device is disconnected and stops re-queuing usb requests. Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") cc: stable@vger.kernel.org Signed-off-by: Pawel Laszczak Reviewed-by: Peter Chen Link: https://lore.kernel.org/r/PH7PR07MB9538E8CA7A2096AAF6A3718FDD9E2@PH7PR07MB9538.namprd07.prod.outlook.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/cdns3/cdnsp-ring.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/usb/cdns3/cdnsp-ring.c b/drivers/usb/cdns3/cdnsp-ring.c index dbd83d321bca..46852529499d 100644 --- a/drivers/usb/cdns3/cdnsp-ring.c +++ b/drivers/usb/cdns3/cdnsp-ring.c @@ -718,7 +718,8 @@ int cdnsp_remove_request(struct cdnsp_device *pdev, seg = cdnsp_trb_in_td(pdev, cur_td->start_seg, cur_td->first_trb, cur_td->last_trb, hw_deq); - if (seg && (pep->ep_state & EP_ENABLED)) + if (seg && (pep->ep_state & EP_ENABLED) && + !(pep->ep_state & EP_DIS_IN_RROGRESS)) cdnsp_find_new_dequeue_state(pdev, pep, preq->request.stream_id, cur_td, &deq_state); else @@ -736,7 +737,8 @@ int cdnsp_remove_request(struct cdnsp_device *pdev, * During disconnecting all endpoint will be disabled so we don't * have to worry about updating dequeue pointer. */ - if (pdev->cdnsp_state & CDNSP_STATE_DISCONNECT_PENDING) { + if (pdev->cdnsp_state & CDNSP_STATE_DISCONNECT_PENDING || + pep->ep_state & EP_DIS_IN_RROGRESS) { status = -ESHUTDOWN; ret = cdnsp_cmd_set_deq(pdev, pep, &deq_state); } From 2c6b6afa59e78bebcb65bbc8a76b3459f139547c Mon Sep 17 00:00:00 2001 From: Tomas Marek Date: Fri, 6 Sep 2024 07:50:25 +0200 Subject: [PATCH 124/145] usb: dwc2: drd: fix clock gating on USB role switch The dwc2_handle_usb_suspend_intr() function disables gadget clocks in USB peripheral mode when no other power-down mode is available (introduced by commit 0112b7ce68ea ("usb: dwc2: Update dwc2_handle_usb_suspend_intr function.")). However, the dwc2_drd_role_sw_set() USB role update handler attempts to read DWC2 registers if the USB role has changed while the USB is in suspend mode (when the clocks are gated). This causes the system to hang. Release the gadget clocks before handling the USB role update. Fixes: 0112b7ce68ea ("usb: dwc2: Update dwc2_handle_usb_suspend_intr function.") Cc: stable@vger.kernel.org Signed-off-by: Tomas Marek Link: https://lore.kernel.org/r/20240906055025.25057-1-tomas.marek@elrest.cz Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc2/drd.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/usb/dwc2/drd.c b/drivers/usb/dwc2/drd.c index a8605b02115b..1ad8fa3f862a 100644 --- a/drivers/usb/dwc2/drd.c +++ b/drivers/usb/dwc2/drd.c @@ -127,6 +127,15 @@ static int dwc2_drd_role_sw_set(struct usb_role_switch *sw, enum usb_role role) role = USB_ROLE_DEVICE; } + if ((IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || + IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)) && + dwc2_is_device_mode(hsotg) && + hsotg->lx_state == DWC2_L2 && + hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_NONE && + hsotg->bus_suspended && + !hsotg->params.no_clock_gating) + dwc2_gadget_exit_clock_gating(hsotg, 0); + if (role == USB_ROLE_HOST) { already = dwc2_ovr_avalid(hsotg, true); } else if (role == USB_ROLE_DEVICE) { From 908f61bedb2c40c6d856bbfd7f870b967a4cb498 Mon Sep 17 00:00:00 2001 From: Radhey Shyam Pandey Date: Sat, 7 Sep 2024 23:33:15 +0530 Subject: [PATCH 125/145] usb: misc: onboard_dev: extend platform data to add power on delay field Introduce dedicated field 'power_on_delay_us' in onboard platform data and update its delay for USB5744 configuration. Hub itself requires some delay after reset to get to state where configuration data is going to be accepted. Without delay upcoming support for configuration via SMBUS is reporting a failure on the first SMBus write. i2c 2-002d: error -ENXIO: BYPASS_UDC_SUSPEND bit configuration failed Similar delay is likely also required for default configuration but because there is enough time (code execution) between reset and usage of the hub any issue is not visible but it doesn't mean delay shouldn't be reflected. Signed-off-by: Radhey Shyam Pandey Suggested-by: Matthias Kaehlcke Link: https://lore.kernel.org/r/1725732196-70975-2-git-send-email-radhey.shyam.pandey@amd.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/onboard_usb_dev.c | 1 + drivers/usb/misc/onboard_usb_dev.h | 2 ++ 2 files changed, 3 insertions(+) diff --git a/drivers/usb/misc/onboard_usb_dev.c b/drivers/usb/misc/onboard_usb_dev.c index 56710e6b1653..da27c48fc11d 100644 --- a/drivers/usb/misc/onboard_usb_dev.c +++ b/drivers/usb/misc/onboard_usb_dev.c @@ -98,6 +98,7 @@ static int onboard_dev_power_on(struct onboard_dev *onboard_dev) fsleep(onboard_dev->pdata->reset_us); gpiod_set_value_cansleep(onboard_dev->reset_gpio, 0); + fsleep(onboard_dev->pdata->power_on_delay_us); onboard_dev->is_powered_on = true; diff --git a/drivers/usb/misc/onboard_usb_dev.h b/drivers/usb/misc/onboard_usb_dev.h index fbba549c0f47..317b3eb99c02 100644 --- a/drivers/usb/misc/onboard_usb_dev.h +++ b/drivers/usb/misc/onboard_usb_dev.h @@ -10,6 +10,7 @@ struct onboard_dev_pdata { unsigned long reset_us; /* reset pulse width in us */ + unsigned long power_on_delay_us; /* power on delay in us */ unsigned int num_supplies; /* number of supplies */ const char * const supply_names[MAX_SUPPLIES]; bool is_hub; @@ -24,6 +25,7 @@ static const struct onboard_dev_pdata microchip_usb424_data = { static const struct onboard_dev_pdata microchip_usb5744_data = { .reset_us = 0, + .power_on_delay_us = 10000, .num_supplies = 2, .supply_names = { "vdd", "vdd2" }, .is_hub = true, From 6782311d04dfbb01d379836ee5c564f49e66648c Mon Sep 17 00:00:00 2001 From: Radhey Shyam Pandey Date: Sat, 7 Sep 2024 23:33:16 +0530 Subject: [PATCH 126/145] usb: misc: onboard_usb_dev: add Microchip usb5744 SMBus programming support usb5744 supports SMBus Configuration and it may be configured via the SMBus slave interface during the hub start-up configuration stage. To program it driver uses i2c-bus phandle (added in commit '02be19e914b8 dt-bindings: usb: Add support for Microchip usb5744 hub controller') to get i2c client device and then based on usb5744 compatible check calls usb5744 i2c default initialization sequence. Apart from the USB command attach, prevent the hub from suspend. when the USB Attach with SMBus (0xAA56) command is issued to the hub, the hub is getting enumerated and then it puts in a suspend mode. This causes the hub to NAK any SMBus access made by the SMBus Master during this period and not able to see the hub's slave address while running the "i2c probe" command. Prevent the MCU from putting the HUB in suspend mode through register write. The BYPASS_UDC_SUSPEND bit (Bit 3) of the RuntimeFlags2 register at address 0x411D controls this aspect of the hub. The BYPASS_UDC_SUSPEND bit in register 0x411Dh must be set to ensure that the MCU is always enabled and ready to respond to SMBus runtime commands. This register needs to be written before the USB attach command is issued. The byte sequence is as follows: Slave addr: 0x2d 00 00 05 00 01 41 1D 08 Slave addr: 0x2d 99 37 00 Slave addr: 0x2d AA 56 00 Also since usb5744 i2c initialization routine uses i2c SMBus APIs invoke these APIs only when i2c driver is enabled in the kernel configuration. Signed-off-by: Radhey Shyam Pandey Link: https://lore.kernel.org/r/1725732196-70975-3-git-send-email-radhey.shyam.pandey@amd.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/onboard_usb_dev.c | 77 ++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) diff --git a/drivers/usb/misc/onboard_usb_dev.c b/drivers/usb/misc/onboard_usb_dev.c index da27c48fc11d..560591e02d6a 100644 --- a/drivers/usb/misc/onboard_usb_dev.c +++ b/drivers/usb/misc/onboard_usb_dev.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -29,6 +30,17 @@ #include "onboard_usb_dev.h" +/* USB5744 register offset and mask */ +#define USB5744_CMD_ATTACH 0xAA +#define USB5744_CMD_ATTACH_LSB 0x56 +#define USB5744_CMD_CREG_ACCESS 0x99 +#define USB5744_CMD_CREG_ACCESS_LSB 0x37 +#define USB5744_CREG_MEM_ADDR 0x00 +#define USB5744_CREG_WRITE 0x00 +#define USB5744_CREG_RUNTIMEFLAGS2 0x41 +#define USB5744_CREG_RUNTIMEFLAGS2_LSB 0x1D +#define USB5744_CREG_BYPASS_UDC_SUSPEND BIT(3) + static void onboard_dev_attach_usb_driver(struct work_struct *work); static struct usb_device_driver onboard_dev_usbdev_driver; @@ -297,10 +309,50 @@ static void onboard_dev_attach_usb_driver(struct work_struct *work) pr_err("Failed to attach USB driver: %pe\n", ERR_PTR(err)); } +static int onboard_dev_5744_i2c_init(struct i2c_client *client) +{ +#if IS_ENABLED(CONFIG_I2C) + struct device *dev = &client->dev; + int ret; + + /* + * Set BYPASS_UDC_SUSPEND bit to ensure MCU is always enabled + * and ready to respond to SMBus runtime commands. + * The command writes 5 bytes to memory and single data byte in + * configuration register. + */ + char wr_buf[7] = {USB5744_CREG_MEM_ADDR, 5, + USB5744_CREG_WRITE, 1, + USB5744_CREG_RUNTIMEFLAGS2, + USB5744_CREG_RUNTIMEFLAGS2_LSB, + USB5744_CREG_BYPASS_UDC_SUSPEND}; + + ret = i2c_smbus_write_block_data(client, 0, sizeof(wr_buf), wr_buf); + if (ret) + return dev_err_probe(dev, ret, "BYPASS_UDC_SUSPEND bit configuration failed\n"); + + ret = i2c_smbus_write_word_data(client, USB5744_CMD_CREG_ACCESS, + USB5744_CMD_CREG_ACCESS_LSB); + if (ret) + return dev_err_probe(dev, ret, "Configuration Register Access Command failed\n"); + + /* Send SMBus command to boot hub. */ + ret = i2c_smbus_write_word_data(client, USB5744_CMD_ATTACH, + USB5744_CMD_ATTACH_LSB); + if (ret < 0) + return dev_err_probe(dev, ret, "USB Attach with SMBus command failed\n"); + + return ret; +#else + return -ENODEV; +#endif +} + static int onboard_dev_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct onboard_dev *onboard_dev; + struct device_node *i2c_node; int err; onboard_dev = devm_kzalloc(dev, sizeof(*onboard_dev), GFP_KERNEL); @@ -340,6 +392,27 @@ static int onboard_dev_probe(struct platform_device *pdev) if (err) return err; + i2c_node = of_parse_phandle(pdev->dev.of_node, "i2c-bus", 0); + if (i2c_node) { + struct i2c_client *client; + + client = of_find_i2c_device_by_node(i2c_node); + of_node_put(i2c_node); + + if (!client) { + err = -EPROBE_DEFER; + goto err_power_off; + } + + if (of_device_is_compatible(pdev->dev.of_node, "usb424,2744") || + of_device_is_compatible(pdev->dev.of_node, "usb424,5744")) + err = onboard_dev_5744_i2c_init(client); + + put_device(&client->dev); + if (err < 0) + goto err_power_off; + } + /* * The USB driver might have been detached from the USB devices by * onboard_dev_remove() (e.g. through an 'unbind' by userspace), @@ -351,6 +424,10 @@ static int onboard_dev_probe(struct platform_device *pdev) schedule_work(&attach_usb_driver_work); return 0; + +err_power_off: + onboard_dev_power_off(onboard_dev); + return err; } static void onboard_dev_remove(struct platform_device *pdev) From a6cd2b3fa89468b5f28b83d211bd25cc589f9eba Mon Sep 17 00:00:00 2001 From: Frank Li Date: Fri, 6 Sep 2024 12:30:37 -0400 Subject: [PATCH 127/145] usb: host: xhci-plat: Parse xhci-missing_cas_quirk and apply quirk Parse software managed property 'xhci-skip-phy-init-quirk' and 'xhci-skip-phy-init-quirk' to apply related quirk. It allows usb glue layer driver apply these quirk. Signed-off-by: Frank Li Link: https://lore.kernel.org/r/20240906-dwc-mp-v5-1-ea8ec6774e7b@nxp.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-plat.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 31bdfa52eeb2..ecaa75718e59 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -259,6 +259,12 @@ int xhci_plat_probe(struct platform_device *pdev, struct device *sysdev, const s if (device_property_read_bool(tmpdev, "write-64-hi-lo-quirk")) xhci->quirks |= XHCI_WRITE_64_HI_LO; + if (device_property_read_bool(tmpdev, "xhci-missing-cas-quirk")) + xhci->quirks |= XHCI_MISSING_CAS; + + if (device_property_read_bool(tmpdev, "xhci-skip-phy-init-quirk")) + xhci->quirks |= XHCI_SKIP_PHY_INIT; + device_property_read_u32(tmpdev, "imod-interval-ns", &xhci->imod_interval); } From a9400f1979a0820113a7216a69385cad3a9badde Mon Sep 17 00:00:00 2001 From: Frank Li Date: Fri, 6 Sep 2024 12:30:38 -0400 Subject: [PATCH 128/145] usb: dwc3: imx8mp: add 2 software managed quirk properties for host mode Add 2 software manage quirk properties (xhci-missing-cas-quirk and xhci-skip-phy-init-quirk) for xhci host. dwc3 driver have PHY management to cover both device and host mode, so add xhci-skip-phy-init-quirk to skip PHY management from HCD core. Cold Attach Status (CAS) bit can't be set at i.MX8MP after resume from suspend state. So set xhci-missing-cas-quirk. Signed-off-by: Frank Li Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/20240906-dwc-mp-v5-2-ea8ec6774e7b@nxp.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-imx8mp.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/usb/dwc3/dwc3-imx8mp.c b/drivers/usb/dwc3/dwc3-imx8mp.c index 8b88649b569f..cfb59f6bf5dd 100644 --- a/drivers/usb/dwc3/dwc3-imx8mp.c +++ b/drivers/usb/dwc3/dwc3-imx8mp.c @@ -145,6 +145,17 @@ static irqreturn_t dwc3_imx8mp_interrupt(int irq, void *_dwc3_imx) return IRQ_HANDLED; } +static int dwc3_imx8mp_set_software_node(struct device *dev) +{ + struct property_entry props[3] = { 0 }; + int prop_idx = 0; + + props[prop_idx++] = PROPERTY_ENTRY_BOOL("xhci-missing-cas-quirk"); + props[prop_idx++] = PROPERTY_ENTRY_BOOL("xhci-skip-phy-init-quirk"); + + return device_create_managed_software_node(dev, props, NULL); +} + static int dwc3_imx8mp_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -207,6 +218,13 @@ static int dwc3_imx8mp_probe(struct platform_device *pdev) if (err < 0) goto disable_rpm; + err = dwc3_imx8mp_set_software_node(dev); + if (err) { + err = -ENODEV; + dev_err(dev, "failed to create software node\n"); + goto disable_rpm; + } + err = of_platform_populate(node, NULL, NULL, dev); if (err) { dev_err(&pdev->dev, "failed to create dwc3 core\n"); From 4664b73859dc2f05c2e178e4ca16362f89cff561 Mon Sep 17 00:00:00 2001 From: Li Jun Date: Fri, 6 Sep 2024 12:30:39 -0400 Subject: [PATCH 129/145] usb: dwc3: imx8mp: disable SS_CON and U3 wakeup for system sleep SS_CON and U3 wakeup need 'ref_clk' on. iMX8MP turn off it while system sleep, So disable these wakeup source and only enable DP/DM wakeup source for host mode. Reviewed-by: Xu Yang Signed-off-by: Li Jun Acked-by: Thinh Nguyen Signed-off-by: Frank Li Link: https://lore.kernel.org/r/20240906-dwc-mp-v5-3-ea8ec6774e7b@nxp.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-imx8mp.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-imx8mp.c b/drivers/usb/dwc3/dwc3-imx8mp.c index cfb59f6bf5dd..64c0cd1995aa 100644 --- a/drivers/usb/dwc3/dwc3-imx8mp.c +++ b/drivers/usb/dwc3/dwc3-imx8mp.c @@ -97,7 +97,8 @@ static void imx8mp_configure_glue(struct dwc3_imx8mp *dwc3_imx) writel(value, dwc3_imx->glue_base + USB_CTRL1); } -static void dwc3_imx8mp_wakeup_enable(struct dwc3_imx8mp *dwc3_imx) +static void dwc3_imx8mp_wakeup_enable(struct dwc3_imx8mp *dwc3_imx, + pm_message_t msg) { struct dwc3 *dwc3 = platform_get_drvdata(dwc3_imx->dwc3); u32 val; @@ -107,12 +108,14 @@ static void dwc3_imx8mp_wakeup_enable(struct dwc3_imx8mp *dwc3_imx) val = readl(dwc3_imx->hsio_blk_base + USB_WAKEUP_CTRL); - if ((dwc3->current_dr_role == DWC3_GCTL_PRTCAP_HOST) && dwc3->xhci) - val |= USB_WAKEUP_EN | USB_WAKEUP_SS_CONN | - USB_WAKEUP_U3_EN | USB_WAKEUP_DPDM_EN; - else if (dwc3->current_dr_role == DWC3_GCTL_PRTCAP_DEVICE) + if ((dwc3->current_dr_role == DWC3_GCTL_PRTCAP_HOST) && dwc3->xhci) { + val |= USB_WAKEUP_EN | USB_WAKEUP_DPDM_EN; + if (PMSG_IS_AUTO(msg)) + val |= USB_WAKEUP_SS_CONN | USB_WAKEUP_U3_EN; + } else { val |= USB_WAKEUP_EN | USB_WAKEUP_VBUS_EN | USB_WAKEUP_VBUS_SRC_SESS_VAL; + } writel(val, dwc3_imx->hsio_blk_base + USB_WAKEUP_CTRL); } @@ -277,7 +280,7 @@ static int dwc3_imx8mp_suspend(struct dwc3_imx8mp *dwc3_imx, pm_message_t msg) /* Wakeup enable */ if (PMSG_IS_AUTO(msg) || device_may_wakeup(dwc3_imx->dev)) - dwc3_imx8mp_wakeup_enable(dwc3_imx); + dwc3_imx8mp_wakeup_enable(dwc3_imx, msg); dwc3_imx->pm_suspended = true; From 118ecef16cc221a23f96617016f7a205b070109f Mon Sep 17 00:00:00 2001 From: WangYuli Date: Thu, 5 Sep 2024 12:09:16 +0800 Subject: [PATCH 130/145] usb: xHCI: add XHCI_RESET_ON_RESUME quirk for Phytium xHCI host The resume operation of Phytium Px210 xHCI host would failed to restore state. Use the XHCI_RESET_ON_RESUME quirk to skip it and reset the controller after resume. Co-developed-by: Chen Baozi Signed-off-by: Chen Baozi Co-developed-by: Wang Zhimin Signed-off-by: Wang Zhimin Co-developed-by: Chen Zhenhua Signed-off-by: Chen Zhenhua Co-developed-by: Wang Yinfeng Signed-off-by: Wang Yinfeng Co-developed-by: Jiakun Shuai Signed-off-by: Jiakun Shuai Signed-off-by: WangYuli Link: https://lore.kernel.org/r/2C1FDC3BB34715BE+20240905040916.63199-1-wangyuli@uniontech.com Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index de50f5ba60df..8a5df569221a 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -55,6 +55,9 @@ #define PCI_DEVICE_ID_INTEL_ALDER_LAKE_PCH_XHCI 0x51ed #define PCI_DEVICE_ID_INTEL_ALDER_LAKE_N_PCH_XHCI 0x54ed +#define PCI_VENDOR_ID_PHYTIUM 0x1db7 +#define PCI_DEVICE_ID_PHYTIUM_XHCI 0xdc27 + /* Thunderbolt */ #define PCI_DEVICE_ID_INTEL_MAPLE_RIDGE_XHCI 0x1138 #define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_XHCI 0x15b5 @@ -410,6 +413,10 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) if (pdev->vendor == PCI_VENDOR_ID_VIA) xhci->quirks |= XHCI_RESET_ON_RESUME; + if (pdev->vendor == PCI_VENDOR_ID_PHYTIUM && + pdev->device == PCI_DEVICE_ID_PHYTIUM_XHCI) + xhci->quirks |= XHCI_RESET_ON_RESUME; + /* See https://bugzilla.kernel.org/show_bug.cgi?id=79511 */ if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3432) From e5fa8db0be3e8757e8641600c518425a4589b85c Mon Sep 17 00:00:00 2001 From: Pawel Laszczak Date: Thu, 5 Sep 2024 07:03:28 +0000 Subject: [PATCH 131/145] usb: xhci: fix loss of data on Cadence xHC Streams should flush their TRB cache, re-read TRBs, and start executing TRBs from the beginning of the new dequeue pointer after a 'Set TR Dequeue Pointer' command. Cadence controllers may fail to start from the beginning of the dequeue TRB as it doesn't clear the Opaque 'RsvdO' field of the stream context during 'Set TR Dequeue' command. This stream context area is where xHC stores information about the last partially executed TD when a stream is stopped. xHC uses this information to resume the transfer where it left mid TD, when the stream is restarted. Patch fixes this by clearing out all RsvdO fields before initializing new Stream transfer using a 'Set TR Dequeue Pointer' command. Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") cc: stable@vger.kernel.org Signed-off-by: Pawel Laszczak Reviewed-by: Peter Chen Link: https://lore.kernel.org/r/PH7PR07MB95386A40146E3EC64086F409DD9D2@PH7PR07MB9538.namprd07.prod.outlook.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/cdns3/host.c | 4 +++- drivers/usb/host/xhci-pci.c | 7 +++++++ drivers/usb/host/xhci-ring.c | 14 ++++++++++++++ drivers/usb/host/xhci.h | 1 + 4 files changed, 25 insertions(+), 1 deletion(-) diff --git a/drivers/usb/cdns3/host.c b/drivers/usb/cdns3/host.c index ceca4d839dfd..7ba760ee62e3 100644 --- a/drivers/usb/cdns3/host.c +++ b/drivers/usb/cdns3/host.c @@ -62,7 +62,9 @@ static const struct xhci_plat_priv xhci_plat_cdns3_xhci = { .resume_quirk = xhci_cdns3_resume_quirk, }; -static const struct xhci_plat_priv xhci_plat_cdnsp_xhci; +static const struct xhci_plat_priv xhci_plat_cdnsp_xhci = { + .quirks = XHCI_CDNS_SCTX_QUIRK, +}; static int __cdns_host_init(struct cdns *cdns) { diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 8a5df569221a..91dccd25a551 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -81,6 +81,9 @@ #define PCI_DEVICE_ID_ASMEDIA_2142_XHCI 0x2142 #define PCI_DEVICE_ID_ASMEDIA_3242_XHCI 0x3242 +#define PCI_DEVICE_ID_CADENCE 0x17CD +#define PCI_DEVICE_ID_CADENCE_SSP 0x0200 + static const char hcd_name[] = "xhci_hcd"; static struct hc_driver __read_mostly xhci_pci_hc_driver; @@ -474,6 +477,10 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) xhci->quirks |= XHCI_ZHAOXIN_TRB_FETCH; } + if (pdev->vendor == PCI_DEVICE_ID_CADENCE && + pdev->device == PCI_DEVICE_ID_CADENCE_SSP) + xhci->quirks |= XHCI_CDNS_SCTX_QUIRK; + /* xHC spec requires PCI devices to support D3hot and D3cold */ if (xhci->hci_version >= 0x120) xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW; diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index a4383735b16c..4d664ba53fe9 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1399,6 +1399,20 @@ static void xhci_handle_cmd_set_deq(struct xhci_hcd *xhci, int slot_id, struct xhci_stream_ctx *ctx = &ep->stream_info->stream_ctx_array[stream_id]; deq = le64_to_cpu(ctx->stream_ring) & SCTX_DEQ_MASK; + + /* + * Cadence xHCI controllers store some endpoint state + * information within Rsvd0 fields of Stream Endpoint + * context. This field is not cleared during Set TR + * Dequeue Pointer command which causes XDMA to skip + * over transfer ring and leads to data loss on stream + * pipe. + * To fix this issue driver must clear Rsvd0 field. + */ + if (xhci->quirks & XHCI_CDNS_SCTX_QUIRK) { + ctx->reserved[0] = 0; + ctx->reserved[1] = 0; + } } else { deq = le64_to_cpu(ep_ctx->deq) & ~EP_CTX_CYCLE_MASK; } diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 1e50ebbe9514..620502de971a 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1623,6 +1623,7 @@ struct xhci_hcd { #define XHCI_ZHAOXIN_TRB_FETCH BIT_ULL(45) #define XHCI_ZHAOXIN_HOST BIT_ULL(46) #define XHCI_WRITE_64_HI_LO BIT_ULL(47) +#define XHCI_CDNS_SCTX_QUIRK BIT_ULL(48) unsigned int num_active_eps; unsigned int limit_active_eps; From 2193ede180dde21b7f866cc457eb9e13341e663b Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 9 Sep 2024 11:17:38 +0000 Subject: [PATCH 132/145] net/9p/usbg: fix CONFIG_USB_GADGET dependency When USB gadget support is in a loadable module, 9pfs cannot link to it as a built-in driver: x86_64-linux-ld: vmlinux.o: in function `usb9pfs_free_func': trans_usbg.c:(.text+0x1070012): undefined reference to `usb_free_all_descriptors' x86_64-linux-ld: vmlinux.o: in function `disable_ep': trans_usbg.c:(.text+0x1070528): undefined reference to `usb_ep_disable' x86_64-linux-ld: vmlinux.o: in function `usb9pfs_func_unbind': trans_usbg.c:(.text+0x10705df): undefined reference to `usb_ep_free_request' x86_64-linux-ld: trans_usbg.c:(.text+0x107061f): undefined reference to `usb_ep_free_request' x86_64-linux-ld: vmlinux.o: in function `usb9pfs_func_bind': trans_usbg.c:(.text+0x107069f): undefined reference to `usb_interface_id' x86_64-linux-ld: trans_usbg.c:(.text+0x10706b5): undefined reference to `usb_string_id' Change the Kconfig dependency to only allow this to be enabled when it can successfully link and work. Fixes: a3be076dc174 ("net/9p/usbg: Add new usb gadget function transport") Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20240909111745.248952-1-arnd@kernel.org Signed-off-by: Greg Kroah-Hartman --- net/9p/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/9p/Kconfig b/net/9p/Kconfig index 2d7e596e22c3..63f988f0c9e8 100644 --- a/net/9p/Kconfig +++ b/net/9p/Kconfig @@ -42,7 +42,7 @@ config NET_9P_XEN config NET_9P_USBG bool "9P USB Gadget Transport" - depends on USB_GADGET + depends on USB_GADGET=y || USB_GADGET=NET_9P help This builds support for a transport for 9pfs over usb gadget. From 96f8052822e03c6f49b6b28fc1d6e5e0522ecbb9 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Thu, 12 Sep 2024 15:39:54 -0700 Subject: [PATCH 133/145] locking/mutex: Define mutex_init() once With CONFIG_PREEMPT_RT disabled __mutex_init() is a function. With CONFIG_PREEMPT_RT enabled, __mutex_init() is a macro. I assume this is why mutex_init() is defined twice as exactly the same macro. Prepare for introducing a new macro for mutex initialization by combining the two identical mutex_init() definitions into a single definition. This patch does not change any functionality because the C preprocessor expands macros when it encounters the macro name and not when a macro definition is encountered. See also commit bb630f9f7a7d ("locking/rtmutex: Add mutex variant for RT"). Acked-by: Peter Zijlstra (Intel) Cc: Thomas Gleixner Cc: Ingo Molnar Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20240912223956.3554086-2-bvanassche@acm.org Signed-off-by: Greg Kroah-Hartman --- include/linux/mutex.h | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/include/linux/mutex.h b/include/linux/mutex.h index a561c629d89f..ef617089db19 100644 --- a/include/linux/mutex.h +++ b/include/linux/mutex.h @@ -49,7 +49,6 @@ static inline void mutex_destroy(struct mutex *lock) {} #endif -#ifndef CONFIG_PREEMPT_RT /** * mutex_init - initialize the mutex * @mutex: the mutex to be initialized @@ -65,6 +64,7 @@ do { \ __mutex_init((mutex), #mutex, &__key); \ } while (0) +#ifndef CONFIG_PREEMPT_RT #define __MUTEX_INITIALIZER(lockname) \ { .owner = ATOMIC_LONG_INIT(0) \ , .wait_lock = __RAW_SPIN_LOCK_UNLOCKED(lockname.wait_lock) \ @@ -111,12 +111,6 @@ do { \ __mutex_rt_init((mutex), name, key); \ } while (0) -#define mutex_init(mutex) \ -do { \ - static struct lock_class_key __key; \ - \ - __mutex_init((mutex), #mutex, &__key); \ -} while (0) #endif /* CONFIG_PREEMPT_RT */ #ifdef CONFIG_DEBUG_MUTEXES From e837d833a13461c10f265a65ce6612e6dd43e76f Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Thu, 12 Sep 2024 15:39:55 -0700 Subject: [PATCH 134/145] locking/mutex: Introduce mutex_init_with_key() The following pattern occurs 5 times in kernel drivers: lockdep_register_key(key); __mutex_init(mutex, name, key); In several cases the 'name' argument matches #mutex. Hence, introduce the mutex_init_with_key() macro. This macro derives the 'name' argument from the 'mutex' argument. Suggested-by: Andy Shevchenko Acked-by: Peter Zijlstra (Intel) Reviewed-by: Andy Shevchenko Cc: Thomas Gleixner Cc: Ingo Molnar Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20240912223956.3554086-3-bvanassche@acm.org Signed-off-by: Greg Kroah-Hartman --- include/linux/mutex.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/linux/mutex.h b/include/linux/mutex.h index ef617089db19..2bf91b57591b 100644 --- a/include/linux/mutex.h +++ b/include/linux/mutex.h @@ -64,6 +64,17 @@ do { \ __mutex_init((mutex), #mutex, &__key); \ } while (0) +/** + * mutex_init_with_key - initialize a mutex with a given lockdep key + * @mutex: the mutex to be initialized + * @key: the lockdep key to be associated with the mutex + * + * Initialize the mutex to the unlocked state. + * + * It is not allowed to initialize an already locked mutex. + */ +#define mutex_init_with_key(mutex, key) __mutex_init((mutex), #mutex, (key)) + #ifndef CONFIG_PREEMPT_RT #define __MUTEX_INITIALIZER(lockname) \ { .owner = ATOMIC_LONG_INIT(0) \ From 7d01ef789bdcdd02ac42b98ae5b7f98310a0e3d2 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Thu, 12 Sep 2024 15:39:56 -0700 Subject: [PATCH 135/145] usb: roles: Improve the fix for a false positive recursive locking complaint Improve commit fc88bb116179 ("usb: roles: add lockdep class key to struct usb_role_switch") as follows: * Move the lock class key declaration just above the mutex declaration such that the declaration order of these objects matches their initialization order. * Destroy the mutex and lock class key just before these objects are freed. This makes it easier to verify that the destruction calls happen after the last use of these objects. * Instead of switching the mutex key to the dynamic lock class key after initialization of the mutex has completed, initialize the mutex with the dynamic lock class key. Cc: Amit Sunil Dhamne Cc: Badhri Jagan Sridharan Cc: Hans de Goede Cc: Andy Shevchenko Cc: Heikki Krogerus Cc: Greg Kroah-Hartman Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20240912223956.3554086-4-bvanassche@acm.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/roles/class.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c index 7aca1ef7f44c..c58a12c147f4 100644 --- a/drivers/usb/roles/class.c +++ b/drivers/usb/roles/class.c @@ -22,6 +22,7 @@ static const struct class role_class = { struct usb_role_switch { struct device dev; + struct lock_class_key key; struct mutex lock; /* device lock*/ struct module *module; /* the module this device depends on */ enum usb_role role; @@ -34,8 +35,6 @@ struct usb_role_switch { usb_role_switch_set_t set; usb_role_switch_get_t get; bool allow_userspace_control; - - struct lock_class_key key; }; #define to_role_switch(d) container_of(d, struct usb_role_switch, dev) @@ -329,6 +328,8 @@ static void usb_role_switch_release(struct device *dev) { struct usb_role_switch *sw = to_role_switch(dev); + mutex_destroy(&sw->lock); + lockdep_unregister_key(&sw->key); kfree(sw); } @@ -367,7 +368,8 @@ usb_role_switch_register(struct device *parent, if (!sw) return ERR_PTR(-ENOMEM); - mutex_init(&sw->lock); + lockdep_register_key(&sw->key); + mutex_init_with_key(&sw->lock, &sw->key); sw->allow_userspace_control = desc->allow_userspace_control; sw->usb2_port = desc->usb2_port; @@ -399,9 +401,6 @@ usb_role_switch_register(struct device *parent, sw->registered = true; - lockdep_register_key(&sw->key); - lockdep_set_class(&sw->lock, &sw->key); - /* TODO: Symlinks for the host port and the device controller. */ return sw; @@ -418,9 +417,6 @@ void usb_role_switch_unregister(struct usb_role_switch *sw) { if (IS_ERR_OR_NULL(sw)) return; - - lockdep_unregister_key(&sw->key); - sw->registered = false; if (dev_fwnode(&sw->dev)) component_del(&sw->dev, &connector_ops); From 9027afa89bfe9e50e46714b72179761c67ebf4ad Mon Sep 17 00:00:00 2001 From: Abhishek Tamboli Date: Thu, 12 Sep 2024 20:22:47 +0530 Subject: [PATCH 136/145] usb: storage: ene_ub6250: Fix right shift warnings Change bl_len from u16 to u32 to accommodate the necessary bit shifts. Fix the following smatch warnings: drivers/usb/storage/ene_ub6250.c:1509 ms_scsi_read_capacity() warn: right shifting more than type allows 16 vs 24 drivers/usb/storage/ene_ub6250.c:1510 ms_scsi_read_capacity() warn: right shifting more than type allows 16 vs 16 Signed-off-by: Abhishek Tamboli Acked-by: Alan Stern Link: https://lore.kernel.org/r/20240912145247.15544-1-abhishektamboli9@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/ene_ub6250.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/storage/ene_ub6250.c b/drivers/usb/storage/ene_ub6250.c index 73dd276ce59c..a4bfbecbf16c 100644 --- a/drivers/usb/storage/ene_ub6250.c +++ b/drivers/usb/storage/ene_ub6250.c @@ -1484,7 +1484,7 @@ static int ms_scsi_mode_sense(struct us_data *us, struct scsi_cmnd *srb) static int ms_scsi_read_capacity(struct us_data *us, struct scsi_cmnd *srb) { u32 bl_num; - u16 bl_len; + u32 bl_len; unsigned int offset = 0; unsigned char buf[8]; struct scatterlist *sg = NULL; From e8afd5ace118fe3a508cd6f2aa21e2da150bed48 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 12 Sep 2024 11:54:09 +0300 Subject: [PATCH 137/145] usb: dwc3: rtk: Clean up error code in __get_dwc3_maximum_speed() The __get_dwc3_maximum_speed() function returns an enum type which, in this context here, is basically unsigned int. On error cases, it's supposed to return USB_SPEED_UNKNOWN, but it was accidentally changed to return negative error codes in commit f93e96c544ca ("usb: dwc3: rtk: use scoped device node handling to simplify error paths"). There is only one caller and because of the way that the types work out, returning negative error codes is not a problem. They will be treated as greater than USB_SPEED_HIGH and ignored as invalid. So this patch does not affect run time behavior, it's just a clean up. Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/865e56dc-37cc-47b1-8d35-9047ecb1984a@stanley.mountain Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-rtk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/dwc3-rtk.c b/drivers/usb/dwc3/dwc3-rtk.c index b3db5cd9906e..e9c8b032c72c 100644 --- a/drivers/usb/dwc3/dwc3-rtk.c +++ b/drivers/usb/dwc3/dwc3-rtk.c @@ -184,7 +184,7 @@ static enum usb_device_speed __get_dwc3_maximum_speed(struct device_node *np) ret = of_property_read_string(dwc3_np, "maximum-speed", &maximum_speed); if (ret < 0) - return ret; + return USB_SPEED_UNKNOWN; ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed); From 7fa6b25dfb43dafc0e16510e2fcfd63634fc95c2 Mon Sep 17 00:00:00 2001 From: "Christian A. Ehrhardt" Date: Thu, 12 Sep 2024 09:41:32 +0200 Subject: [PATCH 138/145] usb: typec: ucsi: Fix busy loop on ASUS VivoBooks If the busy indicator is set, all other fields in CCI should be clear according to the spec. However, some UCSI implementations do not follow this rule and report bogus data in CCI along with the busy indicator. Ignore the contents of CCI if the busy indicator is set. If a command timeout is hit it is possible that the EVENT_PENDING bit is cleared while connector work is still scheduled which can cause the EVENT_PENDING bit to go out of sync with scheduled connector work. Check and set the EVENT_PENDING bit on entry to ucsi_handle_connector_change() to fix this. Finally, check UCSI_CCI_BUSY before the return code of ->sync_control. This ensures that the command is cancelled even if ->sync_control returns an error (most likely -ETIMEDOUT). Reported-by: Anurag Bijea Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219108 Bisected-by: Christian Heusel Tested-by: Anurag Bijea Fixes: de52aca4d9d5 ("usb: typec: ucsi: Never send a lone connector change ack") Cc: stable@vger.kernel.org Signed-off-by: Christian A. Ehrhardt Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20240912074132.722855-1-lk@c--e.de Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/ucsi/ucsi.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 35dce4057c25..e0f3925e401b 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -38,6 +38,10 @@ void ucsi_notify_common(struct ucsi *ucsi, u32 cci) { + /* Ignore bogus data in CCI if busy indicator is set. */ + if (cci & UCSI_CCI_BUSY) + return; + if (UCSI_CCI_CONNECTOR(cci)) ucsi_connector_change(ucsi, UCSI_CCI_CONNECTOR(cci)); @@ -103,15 +107,13 @@ static int ucsi_run_command(struct ucsi *ucsi, u64 command, u32 *cci, return -EINVAL; ret = ucsi->ops->sync_control(ucsi, command); - if (ret) - return ret; - - ret = ucsi->ops->read_cci(ucsi, cci); - if (ret) - return ret; + if (ucsi->ops->read_cci(ucsi, cci)) + return -EIO; if (*cci & UCSI_CCI_BUSY) return ucsi_run_command(ucsi, UCSI_CANCEL, cci, NULL, 0, false) ?: -EBUSY; + if (ret) + return ret; if (!(*cci & UCSI_CCI_COMMAND_COMPLETE)) return -EIO; @@ -1197,6 +1199,10 @@ static void ucsi_handle_connector_change(struct work_struct *work) mutex_lock(&con->lock); + if (!test_and_set_bit(EVENT_PENDING, &ucsi->flags)) + dev_err_once(ucsi->dev, "%s entered without EVENT_PENDING\n", + __func__); + command = UCSI_GET_CONNECTOR_STATUS | UCSI_CONNECTOR_NUMBER(con->num); ret = ucsi_send_command_common(ucsi, command, &con->status, From 9ae0f262fc3f36c1f0b131c7017fbe75245a39df Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Thu, 12 Sep 2024 14:23:45 +0100 Subject: [PATCH 139/145] usb: r8a66597-hcd: make read-only const arrays static Don't populate the read-only const arrays fifoaddr, fifosel and fifoctr on the stack at run time, instead make them static. Signed-off-by: Colin Ian King Link: https://lore.kernel.org/r/20240912132345.589397-1-colin.i.king@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/r8a66597-hcd.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index 9f4bf8c5f8a5..6576515a29cd 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -297,9 +297,9 @@ static void put_child_connect_map(struct r8a66597 *r8a66597, int address) static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch) { u16 pipenum = pipe->info.pipenum; - const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO}; - const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL}; - const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR}; + static const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO}; + static const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL}; + static const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR}; if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */ dma_ch = R8A66597_PIPE_NO_DMA; From b41c1fa155ba56d125885b0191aabaf3c508d0a3 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Thu, 12 Sep 2024 16:19:06 +0200 Subject: [PATCH 140/145] USB: class: CDC-ACM: fix race between get_serial and set_serial TIOCGSERIAL is an ioctl. Thus it must be atomic. It returns two values. Racing with set_serial it can return an inconsistent result. The mutex must be taken. In terms of logic the bug is as old as the driver. In terms of code it goes back to the conversion to the get_serial and set_serial methods. Signed-off-by: Oliver Neukum Cc: stable Fixes: 99f75a1fcd865 ("cdc-acm: switch to ->[sg]et_serial()") Link: https://lore.kernel.org/r/20240912141916.1044393-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 0c1b69d944ca..605fea461102 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -962,10 +962,12 @@ static int get_serial_info(struct tty_struct *tty, struct serial_struct *ss) struct acm *acm = tty->driver_data; ss->line = acm->minor; + mutex_lock(&acm->port.mutex); ss->close_delay = jiffies_to_msecs(acm->port.close_delay) / 10; ss->closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ? ASYNC_CLOSING_WAIT_NONE : jiffies_to_msecs(acm->port.closing_wait) / 10; + mutex_unlock(&acm->port.mutex); return 0; } From 8265d06b7794493d82c5c21a12d7ba43eccc30cb Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Thu, 12 Sep 2024 14:32:59 +0200 Subject: [PATCH 141/145] USB: appledisplay: close race between probe and completion handler There is a small window during probing when IO is running but the backlight is not registered. Processing events during that time will crash. The completion handler needs to check for a backlight before scheduling work. The bug is as old as the driver. Signed-off-by: Oliver Neukum CC: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240912123317.1026049-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/appledisplay.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c index c8098e9b432e..62b5a30edc42 100644 --- a/drivers/usb/misc/appledisplay.c +++ b/drivers/usb/misc/appledisplay.c @@ -107,7 +107,12 @@ static void appledisplay_complete(struct urb *urb) case ACD_BTN_BRIGHT_UP: case ACD_BTN_BRIGHT_DOWN: pdata->button_pressed = 1; - schedule_delayed_work(&pdata->work, 0); + /* + * there is a window during which no device + * is registered + */ + if (pdata->bd ) + schedule_delayed_work(&pdata->work, 0); break; case ACD_BTN_NONE: default: @@ -202,6 +207,7 @@ static int appledisplay_probe(struct usb_interface *iface, const struct usb_device_id *id) { struct backlight_properties props; + struct backlight_device *backlight; struct appledisplay *pdata; struct usb_device *udev = interface_to_usbdev(iface); struct usb_endpoint_descriptor *endpoint; @@ -272,13 +278,14 @@ static int appledisplay_probe(struct usb_interface *iface, memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = 0xff; - pdata->bd = backlight_device_register(bl_name, NULL, pdata, + backlight = backlight_device_register(bl_name, NULL, pdata, &appledisplay_bl_data, &props); - if (IS_ERR(pdata->bd)) { + if (IS_ERR(backlight)) { dev_err(&iface->dev, "Backlight registration failed\n"); - retval = PTR_ERR(pdata->bd); + retval = PTR_ERR(backlight); goto error; } + pdata->bd = backlight; /* Try to get brightness */ brightness = appledisplay_bl_get_brightness(pdata->bd); From 49cd2f4d747eeb3050b76245a7f72aa99dbd3310 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Thu, 12 Sep 2024 14:54:43 +0200 Subject: [PATCH 142/145] USB: misc: cypress_cy7c63: check for short transfer As we process the second byte of a control transfer, transfers of less than 2 bytes must be discarded. This bug is as old as the driver. SIgned-off-by: Oliver Neukum CC: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240912125449.1030536-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/cypress_cy7c63.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/misc/cypress_cy7c63.c b/drivers/usb/misc/cypress_cy7c63.c index cecd7693b741..75f5a740cba3 100644 --- a/drivers/usb/misc/cypress_cy7c63.c +++ b/drivers/usb/misc/cypress_cy7c63.c @@ -88,6 +88,9 @@ static int vendor_command(struct cypress *dev, unsigned char request, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER, address, data, iobuf, CYPRESS_MAX_REQSIZE, USB_CTRL_GET_TIMEOUT); + /* we must not process garbage */ + if (retval < 2) + goto err_buf; /* store returned data (more READs to be added) */ switch (request) { @@ -107,6 +110,7 @@ static int vendor_command(struct cypress *dev, unsigned char request, break; } +err_buf: kfree(iobuf); error: return retval; From 93907620b308609c72ba4b95b09a6aa2658bb553 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Thu, 12 Sep 2024 15:21:22 +0200 Subject: [PATCH 143/145] USB: misc: yurex: fix race between read and write The write code path touches the bbu member in a non atomic manner without taking the spinlock. Fix it. The bug is as old as the driver. Signed-off-by: Oliver Neukum CC: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240912132126.1034743-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/yurex.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c index 4745a320eae4..4a9859e03f6b 100644 --- a/drivers/usb/misc/yurex.c +++ b/drivers/usb/misc/yurex.c @@ -404,7 +404,6 @@ static ssize_t yurex_read(struct file *file, char __user *buffer, size_t count, struct usb_yurex *dev; int len = 0; char in_buffer[MAX_S64_STRLEN]; - unsigned long flags; dev = file->private_data; @@ -419,9 +418,9 @@ static ssize_t yurex_read(struct file *file, char __user *buffer, size_t count, return -EIO; } - spin_lock_irqsave(&dev->lock, flags); + spin_lock_irq(&dev->lock); scnprintf(in_buffer, MAX_S64_STRLEN, "%lld\n", dev->bbu); - spin_unlock_irqrestore(&dev->lock, flags); + spin_unlock_irq(&dev->lock); mutex_unlock(&dev->io_mutex); return simple_read_from_buffer(buffer, count, ppos, in_buffer, len); @@ -511,8 +510,11 @@ static ssize_t yurex_write(struct file *file, const char __user *user_buffer, __func__, retval); goto error; } - if (set && timeout) + if (set && timeout) { + spin_lock_irq(&dev->lock); dev->bbu = c2; + spin_unlock_irq(&dev->lock); + } return timeout ? count : -EIO; error: From d2a18bbc5279ddc090f1b776740f6909d2248c3b Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Fri, 13 Sep 2024 16:21:25 +0300 Subject: [PATCH 144/145] sub: cdns2: Use predefined PCI vendor ID constant The PCI vendor ID for Cadence is defined in pci_ids.h. Use it. While at it, move to PCI_DEVICE() macro and usual pattern for PCI class and device IDs. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20240913132125.3630860-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/cdns2/cdns2-pci.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/usb/gadget/udc/cdns2/cdns2-pci.c b/drivers/usb/gadget/udc/cdns2/cdns2-pci.c index 50c3d0974d9b..b1a8f772467c 100644 --- a/drivers/usb/gadget/udc/cdns2/cdns2-pci.c +++ b/drivers/usb/gadget/udc/cdns2/cdns2-pci.c @@ -15,8 +15,7 @@ #include "cdns2-gadget.h" #define PCI_DRIVER_NAME "cdns-pci-usbhs" -#define CDNS_VENDOR_ID 0x17cd -#define CDNS_DEVICE_ID 0x0120 +#define PCI_DEVICE_ID_CDNS_USB2 0x0120 #define PCI_BAR_DEV 0 #define PCI_DEV_FN_DEVICE 0 @@ -114,8 +113,8 @@ static const struct dev_pm_ops cdns2_pci_pm_ops = { }; static const struct pci_device_id cdns2_pci_ids[] = { - { PCI_VENDOR_ID_CDNS, CDNS_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, - PCI_CLASS_SERIAL_USB_DEVICE, PCI_ANY_ID }, + { PCI_DEVICE(PCI_VENDOR_ID_CDNS, PCI_DEVICE_ID_CDNS_USB2), + .class = PCI_CLASS_SERIAL_USB_DEVICE }, { 0, } }; From 68d4209158f43a558c5553ea95ab0c8975eab18c Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Fri, 13 Sep 2024 16:17:10 +0300 Subject: [PATCH 145/145] sub: cdns3: Use predefined PCI vendor ID constant The PCI vendor ID for Cadence is defined in pci_ids.h. Use it. While at it, move to PCI_DEVICE() macro and usual pattern for PCI class and device IDs. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20240913131710.3630560-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/cdns3/cdns3-pci-wrap.c | 5 ++--- drivers/usb/cdns3/cdnsp-pci.c | 29 +++++++++++++++-------------- 2 files changed, 17 insertions(+), 17 deletions(-) diff --git a/drivers/usb/cdns3/cdns3-pci-wrap.c b/drivers/usb/cdns3/cdns3-pci-wrap.c index 1f6320d98a76..591d149de8f3 100644 --- a/drivers/usb/cdns3/cdns3-pci-wrap.c +++ b/drivers/usb/cdns3/cdns3-pci-wrap.c @@ -37,8 +37,7 @@ struct cdns3_wrap { #define PCI_DRIVER_NAME "cdns3-pci-usbss" #define PLAT_DRIVER_NAME "cdns-usb3" -#define CDNS_VENDOR_ID 0x17cd -#define CDNS_DEVICE_ID 0x0100 +#define PCI_DEVICE_ID_CDNS_USB3 0x0100 static struct pci_dev *cdns3_get_second_fun(struct pci_dev *pdev) { @@ -190,7 +189,7 @@ static void cdns3_pci_remove(struct pci_dev *pdev) } static const struct pci_device_id cdns3_pci_ids[] = { - { PCI_DEVICE(CDNS_VENDOR_ID, CDNS_DEVICE_ID), }, + { PCI_VDEVICE(CDNS, PCI_DEVICE_ID_CDNS_USB3) }, { 0, } }; diff --git a/drivers/usb/cdns3/cdnsp-pci.c b/drivers/usb/cdns3/cdnsp-pci.c index 225540fc81ba..2d05368a6745 100644 --- a/drivers/usb/cdns3/cdnsp-pci.c +++ b/drivers/usb/cdns3/cdnsp-pci.c @@ -28,10 +28,11 @@ #define PCI_DRIVER_NAME "cdns-pci-usbssp" #define PLAT_DRIVER_NAME "cdns-usbssp" -#define CDNS_VENDOR_ID 0x17cd -#define CDNS_DEVICE_ID 0x0200 -#define CDNS_DRD_ID 0x0100 -#define CDNS_DRD_IF (PCI_CLASS_SERIAL_USB << 8 | 0x80) +#define PCI_DEVICE_ID_CDNS_USB3 0x0100 +#define PCI_DEVICE_ID_CDNS_UDC 0x0200 + +#define PCI_CLASS_SERIAL_USB_CDNS_USB3 (PCI_CLASS_SERIAL_USB << 8 | 0x80) +#define PCI_CLASS_SERIAL_USB_CDNS_UDC PCI_CLASS_SERIAL_USB_DEVICE static struct pci_dev *cdnsp_get_second_fun(struct pci_dev *pdev) { @@ -40,10 +41,10 @@ static struct pci_dev *cdnsp_get_second_fun(struct pci_dev *pdev) * Platform has two function. The fist keeps resources for * Host/Device while the secon keeps resources for DRD/OTG. */ - if (pdev->device == CDNS_DEVICE_ID) - return pci_get_device(pdev->vendor, CDNS_DRD_ID, NULL); - else if (pdev->device == CDNS_DRD_ID) - return pci_get_device(pdev->vendor, CDNS_DEVICE_ID, NULL); + if (pdev->device == PCI_DEVICE_ID_CDNS_UDC) + return pci_get_device(pdev->vendor, PCI_DEVICE_ID_CDNS_USB3, NULL); + if (pdev->device == PCI_DEVICE_ID_CDNS_USB3) + return pci_get_device(pdev->vendor, PCI_DEVICE_ID_CDNS_UDC, NULL); return NULL; } @@ -220,12 +221,12 @@ static const struct dev_pm_ops cdnsp_pci_pm_ops = { }; static const struct pci_device_id cdnsp_pci_ids[] = { - { PCI_VENDOR_ID_CDNS, CDNS_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, - PCI_CLASS_SERIAL_USB_DEVICE, PCI_ANY_ID }, - { PCI_VENDOR_ID_CDNS, CDNS_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, - CDNS_DRD_IF, PCI_ANY_ID }, - { PCI_VENDOR_ID_CDNS, CDNS_DRD_ID, PCI_ANY_ID, PCI_ANY_ID, - CDNS_DRD_IF, PCI_ANY_ID }, + { PCI_DEVICE(PCI_VENDOR_ID_CDNS, PCI_DEVICE_ID_CDNS_UDC), + .class = PCI_CLASS_SERIAL_USB_CDNS_UDC }, + { PCI_DEVICE(PCI_VENDOR_ID_CDNS, PCI_DEVICE_ID_CDNS_UDC), + .class = PCI_CLASS_SERIAL_USB_CDNS_USB3 }, + { PCI_DEVICE(PCI_VENDOR_ID_CDNS, PCI_DEVICE_ID_CDNS_USB3), + .class = PCI_CLASS_SERIAL_USB_CDNS_USB3 }, { 0, } };