Input: usbtouchscreen - support for JASTEC/DigiTech DTR-02U USB touch controllers

Add support for the JASTEC/DigiTech DTR-02U USB touch screen
controllers.

Signed-off-by: Jim Persson <jim-linux@nurd.se>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 72e2712..a66e50a 100644 (file)
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -406,6 +406,7 @@ config TOUCHSCREEN_USB_COMPOSITE
          - IRTOUCHSYSTEMS/UNITOP
          - IdealTEK URTC1000
          - GoTop Super_Q2/GogoPen/PenPower tablets
+         - JASTEC USB Touch Controller/DigiTech DTR-02U
 
          Have a look at <http://linux.chapter7.ch/touchkit/> for
          a usage description and the required user-space stuff.
@@ -468,6 +469,11 @@ config TOUCHSCREEN_USB_GOTOP
        bool "GoTop Super_Q2/GogoPen/PenPower tablet device support" if EMBEDDED
        depends on TOUCHSCREEN_USB_COMPOSITE
 
+config TOUCHSCREEN_USB_JASTEC
+       default y
+       bool "JASTEC/DigiTech DTR-02U USB touch controller device support" if EMBEDDED
+       depends on TOUCHSCREEN_USB_COMPOSITE
+
 config TOUCHSCREEN_TOUCHIT213
        tristate "Sahara TouchIT-213 touchscreen"
        select SERIO

diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index fb7cb9b..c07be07 100644 (file)
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -13,6 +13,7 @@
  *  - IdealTEK URTC1000
  *  - General Touch
  *  - GoTop Super_Q2/GogoPen/PenPower tablets
+ *  - JASTEC USB touch controller/DigiTech DTR-02U
  *
  * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
  * Copyright (C) by Todd E. Johnson (mtouchusb.c)
@@ -118,6 +119,7 @@ enum {
        DEVTYPE_IDEALTEK,
        DEVTYPE_GENERAL_TOUCH,
        DEVTYPE_GOTOP,
+       DEVTYPE_JASTEC,
 };
 
 #define USB_DEVICE_HID_CLASS(vend, prod) \
@@ -191,6 +193,10 @@ static struct usb_device_id usbtouch_devices[] = {
        {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
 #endif
 
+#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
+       {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
+#endif
+
        {}
 };
 
@@ -559,6 +565,21 @@ 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
+
+/*****************************************************************************
+ * JASTEC Part
+ */
+#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
+static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
+{
+       dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f);
+       dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f);
+       dev->touch = (pkt[0] & 0x40) >> 6;
+
        return 1;
 }
 #endif
@@ -702,6 +723,17 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
                .read_data      = gotop_read_data,
        },
 #endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
+       [DEVTYPE_JASTEC] = {
+               .min_xc         = 0x0,
+               .max_xc         = 0x0fff,
+               .min_yc         = 0x0,
+               .max_yc         = 0x0fff,
+               .rept_size      = 4,
+               .read_data      = jastec_read_data,
+       },
+#endif
 };