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Input: usbtouchscreen - move process_pkt() into main device structure

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In preparation of splitting big usbtouch_dev_info table into separate
per-protocol structures and constifying them move process_pkt() from the
device info into main drvice structure and set it up in probe().
We can derive if we should use single- or multi-packet handling based
on presence of get_pkt_len() method.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20240712051851.3463657-4-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov
2024-07-11 22:18:46 -07:00
parent ca95a47e29
commit fbb1c92282
1 changed files with 13 additions and 15 deletions
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drivers/input/touchscreen/usbtouchscreen.c
+13 -15
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@@ -68,8 +68,6 @@ struct usbtouch_device_info {
*/
bool irq_always;
void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
/*
* used to get the packet len. possible return values:
* > 0: packet len
@@ -103,6 +101,8 @@ struct usbtouch_usb {
int x, y;
int touch, press;
void (*process_pkt)(struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
};
@@ -1045,11 +1045,6 @@ static int elo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
/*****************************************************************************
* the different device descriptors
*/
#ifdef MULTI_PACKET
static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
unsigned char *pkt, int len);
#endif
static struct usbtouch_device_info usbtouch_dev_info[] = {
#ifdef CONFIG_TOUCHSCREEN_USB_ELO
[DEVTYPE_ELO] = {
@@ -1070,7 +1065,6 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
.min_yc = 0x0,
.max_yc = 0x07ff,
.rept_size = 16,
.process_pkt = usbtouch_process_multi,
.get_pkt_len = egalax_get_pkt_len,
.read_data = egalax_read_data,
.init = egalax_init,
@@ -1121,7 +1115,6 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
.min_yc = 0x0,
.max_yc = 0x07ff,
.rept_size = 8,
.process_pkt = usbtouch_process_multi,
.get_pkt_len = eturbo_get_pkt_len,
.read_data = eturbo_read_data,
},
@@ -1177,7 +1170,6 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
.min_yc = 0x0,
.max_yc = 0x0fff,
.rept_size = 8,
.process_pkt = usbtouch_process_multi,
.get_pkt_len = idealtek_get_pkt_len,
.read_data = idealtek_read_data,
},
@@ -1268,7 +1260,6 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
.min_yc = 0x0,
.max_yc = 0x07ff,
.rept_size = 16,
.process_pkt = usbtouch_process_multi,
.get_pkt_len = etouch_get_pkt_len,
.read_data = etouch_read_data,
},
@@ -1378,9 +1369,15 @@ out_flush_buf:
usbtouch->buf_len = 0;
return;
}
#else
static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
unsigned char *pkt, int len)
{
dev_WARN_ONCE(&usbtouch->interface->dev, 1,
"Protocol has ->get_pkt_len() without #define MULTI_PACKET");
}
#endif
static void usbtouch_irq(struct urb *urb)
{
struct usbtouch_usb *usbtouch = urb->context;
@@ -1411,7 +1408,7 @@ static void usbtouch_irq(struct urb *urb)
goto exit;
}
usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
usbtouch->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
exit:
usb_mark_last_busy(interface_to_usbdev(usbtouch->interface));
@@ -1564,8 +1561,6 @@ static int usbtouch_probe(struct usb_interface *intf,
type = &usbtouch_dev_info[id->driver_info];
usbtouch->type = type;
if (!type->process_pkt)
type->process_pkt = usbtouch_process_pkt;
usbtouch->data_size = type->rept_size;
if (type->get_pkt_len) {
@@ -1589,6 +1584,9 @@ static int usbtouch_probe(struct usb_interface *intf,
usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
if (!usbtouch->buffer)
goto out_free_buffers;
usbtouch->process_pkt = usbtouch_process_multi;
} else {
usbtouch->process_pkt = usbtouch_process_pkt;
}
usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);