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Input: usbtouchscreen - add support for e2i touchscreen controller

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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 <floe@butterbrot.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Florian Echtler 2009-07-27 17:35:39 -07:00 committed by Dmitry Torokhov
parent 703490ff7e
commit 9e3b25837a
2 changed files with 54 additions and 0 deletions
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5
drivers/input/touchscreen/Kconfig
View File

@ -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

49
drivers/input/touchscreen/usbtouchscreen.c
View File

@ -120,6 +120,7 @@ enum {
DEVTYPE_GENERAL_TOUCH,
DEVTYPE_GOTOP,
DEVTYPE_JASTEC,
DEVTYPE_E2I,
};
#define USB_DEVICE_HID_CLASS(vend, prod) \
@ -197,10 +198,46 @@ 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
};