From 97fc9552b267212cc77ad0372d6ec4a7a3759fee Mon Sep 17 00:00:00 2001 From: Daniel Ritz Date: Thu, 3 Jul 2008 10:45:37 -0400 Subject: [PATCH] Input: usbtouchscreen - ignore eGalax screens supporting HID protocol The newer versions of the eGalax/EETI screen implement the HID protocol. The device IDs are still the same, but the USB interface descriptor shows the device being of HID class. Change usbtouchscreen to ignore the HID models as they are handled properly by usbhid. Signed-off-by: Daniel Ritz Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/usbtouchscreen.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c index 792b2708a137c..fdd645c214a2d 100644 --- a/drivers/input/touchscreen/usbtouchscreen.c +++ b/drivers/input/touchscreen/usbtouchscreen.c @@ -49,6 +49,7 @@ #include #include #include +#include #define DRIVER_VERSION "v0.6" @@ -101,7 +102,7 @@ struct usbtouch_usb { /* device types */ enum { - DEVTPYE_DUMMY = -1, + DEVTYPE_IGNORE = -1, DEVTYPE_EGALAX, DEVTYPE_PANJIT, DEVTYPE_3M, @@ -115,8 +116,21 @@ enum { DEVTYPE_GOTOP, }; +#define USB_DEVICE_HID_CLASS(vend, prod) \ + .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \ + | USB_DEVICE_ID_MATCH_DEVICE, \ + .idVendor = (vend), \ + .idProduct = (prod), \ + .bInterfaceClass = USB_INTERFACE_CLASS_HID, \ + .bInterfaceProtocol = USB_INTERFACE_PROTOCOL_MOUSE + static struct usb_device_id usbtouch_devices[] = { #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX + /* ignore the HID capable devices, handled by usbhid */ + {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE}, + {USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE}, + + /* normal device IDs */ {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX}, {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX}, {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX}, @@ -857,6 +871,10 @@ static int usbtouch_probe(struct usb_interface *intf, struct usbtouch_device_info *type; int err = -ENOMEM; + /* some devices are ignored */ + if (id->driver_info == DEVTYPE_IGNORE) + return -ENODEV; + interface = intf->cur_altsetting; endpoint = &interface->endpoint[0].desc; -- 2.39.5