Input: usbtouchscreen - add support for GoTop tablet devices

Add support for GoTop Super_Q2/GogoPen/PenPower tablets to usbtouchscreen.
Protocol discovery was done by Yick Yan Lam.

Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index e3e0baa..fa8442b 100644 (file)
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -202,6 +202,7 @@ config TOUCHSCREEN_USB_COMPOSITE
          - DMC TSC-10/25
          - IRTOUCHSYSTEMS/UNITOP
          - IdealTEK URTC1000
+         - GoTop Super_Q2/GogoPen/PenPower tablets
 
          Have a look at <http://linux.chapter7.ch/touchkit/> for
          a usage description and the required user-space stuff.
@@ -259,4 +260,9 @@ config TOUCHSCREEN_USB_GENERAL_TOUCH
        bool "GeneralTouch Touchscreen device support" if EMBEDDED
        depends on TOUCHSCREEN_USB_COMPOSITE
 
+config TOUCHSCREEN_USB_GOTOP
+       default y
+       bool "GoTop Super_Q2/GogoPen/PenPower tablet 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 9fb3d5c..f7d4a3b 100644 (file)
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -11,8 +11,9 @@
  *  - DMC TSC-10/25
  *  - IRTOUCHSYSTEMS/UNITOP
  *  - IdealTEK URTC1000
+ *  - GoTop Super_Q2/GogoPen/PenPower tablets
  *
- * Copyright (C) 2004-2006 by Daniel Ritz <daniel.ritz@gmx.ch>
+ * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
  * Copyright (C) by Todd E. Johnson (mtouchusb.c)
  *
  * This program is free software; you can redistribute it and/or
@@ -115,6 +116,7 @@ enum {
        DEVTYPE_IRTOUCH,
        DEVTYPE_IDEALTEK,
        DEVTYPE_GENERAL_TOUCH,
+       DEVTYPE_GOTOP,
 };
 
 static struct usb_device_id usbtouch_devices[] = {
@@ -168,6 +170,12 @@ static struct usb_device_id usbtouch_devices[] = {
        {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
 #endif
 
+#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
+       {USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP},
+       {USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP},
+       {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
+#endif
+
        {}
 };
 
@@ -501,6 +509,20 @@ static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 #endif
 
 /*****************************************************************************
+ * GoTop Part
+ */
+#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
+static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
+{
+       dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
+       dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
+       dev->touch = pkt[0] & 0x01;
+       return 1;
+}
+#endif
+
+
+/*****************************************************************************
  * the different device descriptors
  */
 static struct usbtouch_device_info usbtouch_dev_info[] = {
@@ -623,9 +645,19 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
                .max_yc         = 0x0500,
                .rept_size      = 7,
                .read_data      = general_touch_read_data,
-       }
+       },
 #endif
 
+#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
+       [DEVTYPE_GOTOP] = {
+               .min_xc         = 0x0,
+               .max_xc         = 0x03ff,
+               .min_yc         = 0x0,
+               .max_yc         = 0x03ff,
+               .rept_size      = 4,
+               .read_data      = gotop_read_data,
+       },
+#endif
 };