diff options
Diffstat (limited to 'drivers/input/touchscreen/usbtouchscreen.c')
| -rw-r--r-- | drivers/input/touchscreen/usbtouchscreen.c | 104 |
1 files changed, 100 insertions, 4 deletions
diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c index 68ece5801a58..09a5e7341bd5 100644 --- a/drivers/input/touchscreen/usbtouchscreen.c +++ b/drivers/input/touchscreen/usbtouchscreen.c @@ -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 +131,8 @@ enum { DEVTYPE_GOTOP, DEVTYPE_JASTEC, DEVTYPE_E2I, + DEVTYPE_ZYTRONIC, + DEVTYPE_TC5UH, }; #define USB_DEVICE_HID_CLASS(vend, prod) \ @@ -201,6 +213,15 @@ 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 + +#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC5UH + {USB_DEVICE(0x0664, 0x0309), .driver_info = DEVTYPE_TC5UH}, +#endif + {} }; @@ -538,6 +559,19 @@ static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt) } #endif +/***************************************************************************** + * ET&T TC5UH part + */ +#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC5UH +static int tc5uh_read_data(struct usbtouch_usb *dev, unsigned char *pkt) +{ + dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1]; + dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3]; + dev->touch = pkt[0] & 0x01; + + return 1; +} +#endif /***************************************************************************** * IdealTEK URTC1000 Part @@ -621,6 +655,39 @@ 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 +850,29 @@ 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 + +#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC5UH + [DEVTYPE_TC5UH] = { + .min_xc = 0x0, + .max_xc = 0x0fff, + .min_yc = 0x0, + .max_yc = 0x0fff, + .rept_size = 5, + .read_data = tc5uh_read_data, + }, +#endif }; @@ -933,8 +1023,10 @@ 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 +1035,8 @@ 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 +1159,9 @@ 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; out_free_buffers: @@ -1087,7 +1183,7 @@ static void usbtouch_disconnect(struct usb_interface *intf) dbg("%s - usbtouch is initialized, cleaning up", __func__); usb_set_intfdata(intf, NULL); - usb_kill_urb(usbtouch->irq); + /* this will stop IO via close */ input_unregister_device(usbtouch->input); usb_free_urb(usbtouch->irq); usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch); |