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usb: typec: Add attribute file showing the supported USB modes of the port

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This attribute file, named "usb_capability", will show the
supported USB modes, which are USB 2.0, USB 3.2 and USB4.
These modes are defined in the USB Type-C (R2.0) and USB
Power Delivery (R3.0 V2.0) Specifications.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20241016131834.898599-2-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus
2024-10-16 16:18:31 +03:00
committed by Greg Kroah-Hartman
parent 0990e5c642
commit 8060bcb109
4 changed files with 112 additions and 0 deletions
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include/linux/usb/typec.h
+17
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@@ -87,6 +87,17 @@ enum typec_orientation {
TYPEC_ORIENTATION_REVERSE,
};
enum usb_mode {
USB_MODE_NONE,
USB_MODE_USB2,
USB_MODE_USB3,
USB_MODE_USB4
};
#define USB_CAPABILITY_USB2 BIT(0)
#define USB_CAPABILITY_USB3 BIT(1)
#define USB_CAPABILITY_USB4 BIT(2)
/*
* struct enter_usb_data - Enter_USB Message details
* @eudo: Enter_USB Data Object
@@ -240,6 +251,7 @@ struct typec_partner_desc {
* @port_type_set: Set port type
* @pd_get: Get available USB Power Delivery Capabilities.
* @pd_set: Set USB Power Delivery Capabilities.
* @default_usb_mode_set: USB Mode to be used by default with Enter_USB Message
*/
struct typec_operations {
int (*try_role)(struct typec_port *port, int role);
@@ -250,6 +262,7 @@ struct typec_operations {
enum typec_port_type type);
struct usb_power_delivery **(*pd_get)(struct typec_port *port);
int (*pd_set)(struct typec_port *port, struct usb_power_delivery *pd);
int (*default_usb_mode_set)(struct typec_port *port, enum usb_mode mode);
};
enum usb_pd_svdm_ver {
@@ -267,6 +280,7 @@ enum usb_pd_svdm_ver {
* @svdm_version: USB PD Structured VDM version if supported
* @prefer_role: Initial role preference (DRP ports).
* @accessory: Supported Accessory Modes
* @usb_capability: Supported USB Modes
* @fwnode: Optional fwnode of the port
* @driver_data: Private pointer for driver specific info
* @pd: Optional USB Power Delivery Support
@@ -283,6 +297,7 @@ struct typec_capability {
int prefer_role;
enum typec_accessory accessory[TYPEC_MAX_ACCESSORY];
unsigned int orientation_aware:1;
u8 usb_capability;
struct fwnode_handle *fwnode;
void *driver_data;
@@ -350,6 +365,8 @@ int typec_port_set_usb_power_delivery(struct typec_port *port, struct usb_power_
int typec_partner_set_usb_power_delivery(struct typec_partner *partner,
struct usb_power_delivery *pd);
void typec_port_set_usb_mode(struct typec_port *port, enum usb_mode mode);
/**
* struct typec_connector - Representation of Type-C port for external drivers
* @attach: notification about device removal