[PATCH 2.6.30.2] drivers/input/touchscreen: Support for e2i touchscreen module in Mimo 740
From: Florian Echtler <hidden>
Date: 2009-07-27 15:51:42
This patch adds support for the e2i touchscreen controller used in the Mimo 740 (and probably in other e2i touchscreen products). Tested on Mimo 740. Signed-off-by: Florian Echtler <redacted> --- diff -ru a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
--- a/drivers/input/touchscreen/Kconfig 2009-03-24 00:12:14.000000000 +0100
+++ b/drivers/input/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 a/drivers/input/touchscreen/usbtouchscreen.c touchscreen/usbtouchscreen.c
--- a/drivers/input/touchscreen/usbtouchscreen.c 2009-07-20 15:33:39.000000000 +0200
+++ b/drivers/input/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 };