Input: usbtouchscreen - add support for GeneralTouch devices

Signed-off-by: Ilya Frolov <zeylie@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

2 files changed, 36 insertions, 0 deletions

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index e73ce6ba3dc1..e3e0baa1a158 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -254,4 +254,9 @@ config TOUCHSCREEN_USB_IDEALTEK
         bool "IdealTEK URTC1000 device support" if EMBEDDED
         depends on TOUCHSCREEN_USB_COMPOSITE
 
+config TOUCHSCREEN_USB_GENERAL_TOUCH
+        default y
+        bool "GeneralTouch Touchscreen device support" if EMBEDDED
+        depends on TOUCHSCREEN_USB_COMPOSITE
+
 endif
diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index 13fbda0895b5..9b3a26cd1a8d 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -114,6 +114,7 @@ enum {
         DEVTYPE_DMC_TSC10,
         DEVTYPE_IRTOUCH,
         DEVTYPE_IDEALTEK,
+        DEVTYPE_GENERAL_TOUCH,
 };
 
 static struct usb_device_id usbtouch_devices[] = {
@@ -163,6 +164,10 @@ static struct usb_device_id usbtouch_devices[] = {
         {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
 #endif
 
+#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
+        {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
+#endif
+
         {}
 };
 
@@ -480,6 +485,20 @@ static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 }
 #endif
 
+/*****************************************************************************
+ * General Touch Part
+ */
+#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
+static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
+{
+        dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1] ;
+        dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3] ;
+        dev->press = pkt[5] & 0xff;
+        dev->touch = pkt[0] & 0x01;
+
+        return 1;
+}
+#endif
 
 /*****************************************************************************
  * the different device descriptors
@@ -595,6 +614,18 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
                 .read_data      = idealtek_read_data,
         },
 #endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
+        [DEVTYPE_GENERAL_TOUCH] = {
+                .min_xc         = 0x0,
+                .max_xc         = 0x0500,
+                .min_yc         = 0x0,
+                .max_yc         = 0x0500,
+                .rept_size      = 7,
+                .read_data      = general_touch_read_data,
+        }
+#endif
+
 };