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Input: usbtouchscreen - add support for Zytronic capacitive touchscreen

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Zytronic USB-attached capacitive touchscreen support within the generic
USB touchscreen driver.

Signed-off-by: Daniel Silverstone <dsilvers@simtec.co.uk>
Signed-off-by: Vincent Sanders <vince@simtec.co.uk>
Signed-off-by: Simtec Linux Team <linux@simtec.co.uk>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Daniel Silverstone 2009-11-23 08:38:16 -08:00 committed by Dmitry Torokhov
parent 721a730ece
commit 2330ed18b2
2 changed files with 76 additions and 3 deletions
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6
drivers/input/touchscreen/Kconfig
View File

@ -430,6 +430,7 @@ config TOUCHSCREEN_USB_COMPOSITE
- IdealTEK URTC1000
- GoTop Super_Q2/GogoPen/PenPower tablets
- JASTEC USB Touch Controller/DigiTech DTR-02U
- Zytronic controllers
Have a look at <http://linux.chapter7.ch/touchkit/> for
a usage description and the required user-space stuff.
@ -502,6 +503,11 @@ config TOUCHSCREEN_USB_E2I
bool "e2i Touchscreen controller (e.g. from Mimo 740)"
depends on TOUCHSCREEN_USB_COMPOSITE
config TOUCHSCREEN_USB_ZYTRONIC
default y
bool "Zytronic controller" if EMBEDDED
depends on TOUCHSCREEN_USB_COMPOSITE
config TOUCHSCREEN_TOUCHIT213
tristate "Sahara TouchIT-213 touchscreen"
select SERIO

73
drivers/input/touchscreen/usbtouchscreen.c
View File

@ -14,6 +14,7 @@
* - General Touch
* - GoTop Super_Q2/GogoPen/PenPower tablets
* - JASTEC USB touch controller/DigiTech DTR-02U
* - Zytronic capacitive touchscreen
*
* Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
* Copyright (C) by Todd E. Johnson (mtouchusb.c)
@ -73,6 +74,15 @@ struct usbtouch_device_info {
int min_press, max_press;
int rept_size;
/*
* Always service the USB devices irq not just when the input device is
* open. This is useful when devices have a watchdog which prevents us
* from periodically polling the device. Leave this unset unless your
* touchscreen device requires it, as it does consume more of the USB
* bandwidth.
*/
bool irq_always;
void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
/*
@ -121,6 +131,7 @@ enum {
DEVTYPE_GOTOP,
DEVTYPE_JASTEC,
DEVTYPE_E2I,
DEVTYPE_ZYTRONIC,
};
#define USB_DEVICE_HID_CLASS(vend, prod) \
@ -201,6 +212,11 @@ static struct usb_device_id usbtouch_devices[] = {
#ifdef CONFIG_TOUCHSCREEN_USB_E2I
{USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
#endif
#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
{USB_DEVICE(0x14c8, 0x0003), .driver_info = DEVTYPE_ZYTRONIC},
#endif
{}
};
@ -621,6 +637,39 @@ static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
}
#endif
/*****************************************************************************
* Zytronic Part
*/
#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
static int zytronic_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
{
switch (pkt[0]) {
case 0x3A: /* command response */
dbg("%s: Command response %d", __func__, pkt[1]);
break;
case 0xC0: /* down */
dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
dev->touch = 1;
dbg("%s: down %d,%d", __func__, dev->x, dev->y);
return 1;
case 0x80: /* up */
dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
dev->touch = 0;
dbg("%s: up %d,%d", __func__, dev->x, dev->y);
return 1;
default:
dbg("%s: Unknown return %d", __func__, pkt[0]);
break;
}
return 0;
}
#endif
/*****************************************************************************
* the different device descriptors
@ -783,6 +832,18 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
.read_data = e2i_read_data,
},
#endif
#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
[DEVTYPE_ZYTRONIC] = {
.min_xc = 0x0,
.max_xc = 0x03ff,
.min_yc = 0x0,
.max_yc = 0x03ff,
.rept_size = 5,
.read_data = zytronic_read_data,
.irq_always = true,
},
#endif
};
@ -933,8 +994,10 @@ static int usbtouch_open(struct input_dev *input)
usbtouch->irq->dev = usbtouch->udev;
if (usb_submit_urb(usbtouch->irq, GFP_KERNEL))
return -EIO;
if (!usbtouch->type->irq_always) {
if (usb_submit_urb(usbtouch->irq, GFP_KERNEL))
return -EIO;
}
return 0;
}
@ -943,7 +1006,8 @@ static void usbtouch_close(struct input_dev *input)
{
struct usbtouch_usb *usbtouch = input_get_drvdata(input);
usb_kill_urb(usbtouch->irq);
if (!usbtouch->type->irq_always)
usb_kill_urb(usbtouch->irq);
}
@ -1066,6 +1130,9 @@ static int usbtouch_probe(struct usb_interface *intf,
usb_set_intfdata(intf, usbtouch);
if (usbtouch->type->irq_always)
usb_submit_urb(usbtouch->irq, GFP_KERNEL);
return 0;
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