From: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>
Bigger Nexio touchscreens not only send more data but also the header
values are modified somehow. Fix the header somehow (it's a guesswork but
it works at least on one 46" touchscreen with 2.00SMS firmware) and also
increase rept_size.
Signed-off-by: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>
Cc: Oliver Neukum <oliver@xxxxxxxxxx>
Cc: Dmitry Torokhov <dtor@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/input/touchscreen/usbtouchscreen.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff -puN drivers/input/touchscreen/usbtouchscreen.c~usbtouchscreen-support-bigger-inexio-touchscreens drivers/input/touchscreen/usbtouchscreen.c
--- a/drivers/input/touchscreen/usbtouchscreen.c~usbtouchscreen-support-bigger-inexio-touchscreens
+++ a/drivers/input/touchscreen/usbtouchscreen.c
@@ -858,6 +858,11 @@ static int nexio_read_data(struct usbtou
if ((pkt[0] & 0xe0) != 0xe0)
return 0;
+ if (be16_to_cpu(packet->data_len) > 0xff)
+ packet->data_len = cpu_to_be16(be16_to_cpu(packet->data_len) - 0x100);
+ if (be16_to_cpu(packet->x_len) > 0xff)
+ packet->x_len = cpu_to_be16(be16_to_cpu(packet->x_len) - 0x80);
+
/* send ACK */
ret = usb_submit_urb(priv->ack, GFP_ATOMIC);
@@ -1113,7 +1118,7 @@ static struct usbtouch_device_info usbto
#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
[DEVTYPE_NEXIO] = {
- .rept_size = 128,
+ .rept_size = 1024,
.irq_always = true,
.read_data = nexio_read_data,
.init = nexio_init,
_
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