Hello,
here's a patch to the generic USB touchscreen driver to support the e2i
touchscreen controller in the Mimo 740 mini-display.
Signed-off-by: Florian Echtler <floe@xxxxxxxxxxxxxx>
diff -ru touchscreen.old/Kconfig touchscreen/Kconfig
--- touchscreen.old/Kconfig 2009-03-24 00:12:14.000000000 +0100
+++ touchscreen/Kconfig 2009-07-20 15:48:39.000000000 +0200
@@ -386,6 +386,11 @@
bool "GoTop Super_Q2/GogoPen/PenPower tablet 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 -ru touchscreen.old/usbtouchscreen.c touchscreen/usbtouchscreen.c
--- touchscreen.old/usbtouchscreen.c 2009-07-20 15:33:39.000000000 +0200
+++ touchscreen/usbtouchscreen.c 2009-07-20 16:04:28.000000000 +0200
@@ -118,6 +118,7 @@
DEVTYPE_IDEALTEK,
DEVTYPE_GENERAL_TOUCH,
DEVTYPE_GOTOP,
+ DEVTYPE_E2I,
};
#define USB_DEVICE_HID_CLASS(vend, prod) \
@@ -191,11 +192,47 @@
{USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
#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
*/
@@ -702,6 +739,18 @@
.read_data = gotop_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
};
