2 files changed, 54 insertions, 0 deletions

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 07703bcb64c2..87a1ae63bcc4 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -474,6 +474,11 @@ config TOUCHSCREEN_USB_JASTEC
         bool "JASTEC/DigiTech DTR-02U USB touch controller device support" if EMBEDDED
         depends on TOUCHSCREEN_USB_COMPOSITE
 
+config TOUCHSCREEN_USB_E2I
+        default y
+        bool "e2i Touchscreen controller (e.g. from Mimo 740)"
+        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 c07be07a69bb..68ece5801a58 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -120,6 +120,7 @@ enum {
         DEVTYPE_GENERAL_TOUCH,
         DEVTYPE_GOTOP,
         DEVTYPE_JASTEC,
+        DEVTYPE_E2I,
 };
 
 #define USB_DEVICE_HID_CLASS(vend, prod) \
@@ -197,11 +198,47 @@ static struct usb_device_id usbtouch_devices[] = {
         {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
 #endif
 
+#ifdef CONFIG_TOUCHSCREEN_USB_E2I
+        {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
+#endif
         {}
 };
 
 
 /*****************************************************************************
+ * e2i Part
+ */
+
+#ifdef CONFIG_TOUCHSCREEN_USB_E2I
+static int e2i_init(struct usbtouch_usb *usbtouch)
+{
+        int ret;
+
+        ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
+                              0x01, 0x02, 0x0000, 0x0081,
+                              NULL, 0, USB_CTRL_SET_TIMEOUT);
+
+        dbg("%s - usb_control_msg - E2I_RESET - bytes|err: %d",
+            __func__, ret);
+        return ret;
+}
+
+static int e2i_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
+{
+        int tmp = (pkt[0] << 8) | pkt[1];
+        dev->x  = (pkt[2] << 8) | pkt[3];
+        dev->y  = (pkt[4] << 8) | pkt[5];
+
+        tmp = tmp - 0xA000;
+        dev->touch = (tmp > 0);
+        dev->press = (tmp > 0 ? tmp : 0);
+
+        return 1;
+}
+#endif
+
+
+/*****************************************************************************
  * eGalax part
  */
 
@@ -734,6 +771,18 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
                 .read_data      = jastec_read_data,
         },
 #endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_E2I
+        [DEVTYPE_E2I] = {
+                .min_xc         = 0x0,
+                .max_xc         = 0x7fff,
+                .min_yc         = 0x0,
+                .max_yc         = 0x7fff,
+                .rept_size      = 6,
+                .init           = e2i_init,
+                .read_data      = e2i_read_data,
+        },
+#endif
 };