atom feed1 message in org.kernel.vger.linux-usb[Patch] Support for e2i touchscreen m...
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Florian EchtlerJul 20, 2009 7:09 am.diff
Subject:[Patch] Support for e2i touchscreen module in Mimo 740
From:Florian Echtler (fl@butterbrot.org)
Date:Jul 20, 2009 7:09:34 am
List:org.kernel.vger.linux-usb
Attachments:

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 <fl@butterbrot.org>

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 };