1 /******************************************************************************
3 * Driver for USB Touchscreens, supporting those devices:
5 * includes eTurboTouch CT-410/510/700
6 * - 3M/Microtouch EX II series
12 * - IRTOUCHSYSTEMS/UNITOP
14 * - GoTop Super_Q2/GogoPen/PenPower tablets
16 * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
17 * Copyright (C) by Todd E. Johnson (mtouchusb.c)
19 * This program is free software; you can redistribute it and/or
20 * modify it under the terms of the GNU General Public License as
21 * published by the Free Software Foundation; either version 2 of the
22 * License, or (at your option) any later version.
24 * This program is distributed in the hope that it will be useful, but
25 * WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 * General Public License for more details.
29 * You should have received a copy of the GNU General Public License
30 * along with this program; if not, write to the Free Software
31 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
33 * Driver is based on touchkitusb.c
34 * - ITM parts are from itmtouch.c
35 * - 3M parts are from mtouchusb.c
36 * - PanJit parts are from an unmerged driver by Lanslott Gish
37 * - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged
38 * driver from Marius Vollmer
40 *****************************************************************************/
44 #include <linux/kernel.h>
45 #include <linux/slab.h>
46 #include <linux/input.h>
47 #include <linux/module.h>
48 #include <linux/init.h>
49 #include <linux/usb.h>
50 #include <linux/usb/input.h>
53 #define DRIVER_VERSION "v0.5"
54 #define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>"
55 #define DRIVER_DESC "USB Touchscreen Driver"
58 module_param(swap_xy, bool, 0644);
59 MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
61 /* device specifc data/functions */
63 struct usbtouch_device_info {
66 int min_press, max_press;
70 void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
71 int (*get_pkt_len) (unsigned char *pkt, int len);
72 int (*read_data) (struct usbtouch_usb *usbtouch, unsigned char *pkt);
73 int (*init) (struct usbtouch_usb *usbtouch);
76 #define USBTOUCH_FLG_BUFFER 0x01
79 /* a usbtouch device */
83 unsigned char *buffer;
86 struct usb_device *udev;
87 struct input_dev *input;
88 struct usbtouch_device_info *type;
97 #if defined(CONFIG_TOUCHSCREEN_USB_EGALAX) || defined(CONFIG_TOUCHSCREEN_USB_ETURBO) || defined(CONFIG_TOUCHSCREEN_USB_IDEALTEK)
102 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
103 unsigned char *pkt, int len);
118 DEVTYPE_GENERAL_TOUCH,
122 static struct usb_device_id usbtouch_devices[] = {
123 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
124 {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
125 {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
126 {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
127 {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
128 {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
129 {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
130 {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
133 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
134 {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
135 {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
136 {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
137 {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
140 #ifdef CONFIG_TOUCHSCREEN_USB_3M
141 {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
144 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
145 {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
148 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
149 {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
152 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
153 {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
156 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
157 {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
160 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
161 {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
162 {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
165 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
166 {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
169 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
170 {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
173 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
174 {USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP},
175 {USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP},
176 {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
183 /*****************************************************************************
187 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
189 #define EGALAX_PKT_TYPE_MASK 0xFE
190 #define EGALAX_PKT_TYPE_REPT 0x80
191 #define EGALAX_PKT_TYPE_DIAG 0x0A
193 static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
195 if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT)
198 dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F);
199 dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F);
200 dev->touch = pkt[0] & 0x01;
205 static int egalax_get_pkt_len(unsigned char *buf, int len)
207 switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
208 case EGALAX_PKT_TYPE_REPT:
211 case EGALAX_PKT_TYPE_DIAG:
223 /*****************************************************************************
226 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
227 static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
229 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
230 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
231 dev->touch = pkt[0] & 0x01;
238 /*****************************************************************************
241 #ifdef CONFIG_TOUCHSCREEN_USB_3M
243 #define MTOUCHUSB_ASYNC_REPORT 1
244 #define MTOUCHUSB_RESET 7
245 #define MTOUCHUSB_REQ_CTRLLR_ID 10
247 static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
249 dev->x = (pkt[8] << 8) | pkt[7];
250 dev->y = (pkt[10] << 8) | pkt[9];
251 dev->touch = (pkt[2] & 0x40) ? 1 : 0;
256 static int mtouch_init(struct usbtouch_usb *usbtouch)
260 ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
262 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
263 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
264 dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d",
270 for (i = 0; i < 3; i++) {
271 ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
272 MTOUCHUSB_ASYNC_REPORT,
273 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
274 1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
275 dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d",
288 /*****************************************************************************
291 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
292 static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
296 * ITM devices report invalid x/y data if not touched.
297 * if the screen was touched before but is not touched any more
298 * report touch as 0 with the last valid x/y data once. then stop
299 * reporting data until touched again.
301 dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F);
303 touch = ~pkt[7] & 0x20;
313 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
314 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
322 /*****************************************************************************
325 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
326 static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
330 /* packets should start with sync */
331 if (!(pkt[0] & 0x80))
334 shift = (6 - (pkt[0] & 0x03));
335 dev->x = ((pkt[3] << 7) | pkt[4]) >> shift;
336 dev->y = ((pkt[1] << 7) | pkt[2]) >> shift;
337 dev->touch = (pkt[0] & 0x10) ? 1 : 0;
342 static int eturbo_get_pkt_len(unsigned char *buf, int len)
353 /*****************************************************************************
356 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
357 static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
359 if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
362 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F);
363 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F);
364 dev->touch = pkt[0] & 0x20;
370 /*****************************************************************************
373 * Documentation about the controller and it's protocol can be found at
374 * http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf
375 * http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf
377 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
379 /* supported data rates. currently using 130 */
380 #define TSC10_RATE_POINT 0x50
381 #define TSC10_RATE_30 0x40
382 #define TSC10_RATE_50 0x41
383 #define TSC10_RATE_80 0x42
384 #define TSC10_RATE_100 0x43
385 #define TSC10_RATE_130 0x44
386 #define TSC10_RATE_150 0x45
389 #define TSC10_CMD_RESET 0x55
390 #define TSC10_CMD_RATE 0x05
391 #define TSC10_CMD_DATA1 0x01
393 static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
395 struct usb_device *dev = usbtouch->udev;
397 unsigned char buf[2];
400 buf[0] = buf[1] = 0xFF;
401 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
403 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
404 0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
407 if (buf[0] != 0x06 || buf[1] != 0x00)
410 /* set coordinate output rate */
411 buf[0] = buf[1] = 0xFF;
412 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
414 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
415 TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
418 if ((buf[0] != 0x06 || buf[1] != 0x00) &&
419 (buf[0] != 0x15 || buf[1] != 0x01))
422 /* start sending data */
423 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
425 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
426 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
434 static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
436 dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
437 dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
438 dev->touch = pkt[0] & 0x01;
445 /*****************************************************************************
448 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
449 static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
451 dev->x = (pkt[3] << 8) | pkt[2];
452 dev->y = (pkt[5] << 8) | pkt[4];
453 dev->touch = (pkt[1] & 0x03) ? 1 : 0;
460 /*****************************************************************************
461 * IdealTEK URTC1000 Part
463 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
464 static int idealtek_get_pkt_len(unsigned char *buf, int len)
473 static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
475 switch (pkt[0] & 0x98) {
477 /* touch data in IdealTEK mode */
478 dev->x = (pkt[1] << 5) | (pkt[2] >> 2);
479 dev->y = (pkt[3] << 5) | (pkt[4] >> 2);
480 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
484 /* touch data in MT emulation mode */
485 dev->x = (pkt[2] << 5) | (pkt[1] >> 2);
486 dev->y = (pkt[4] << 5) | (pkt[3] >> 2);
487 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
496 /*****************************************************************************
499 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
500 static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
502 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1] ;
503 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3] ;
504 dev->press = pkt[5] & 0xff;
505 dev->touch = pkt[0] & 0x01;
511 /*****************************************************************************
514 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
515 static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
517 dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
518 dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
519 dev->touch = pkt[0] & 0x01;
525 /*****************************************************************************
526 * the different device descriptors
528 static struct usbtouch_device_info usbtouch_dev_info[] = {
529 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
536 .flags = USBTOUCH_FLG_BUFFER,
537 .process_pkt = usbtouch_process_multi,
538 .get_pkt_len = egalax_get_pkt_len,
539 .read_data = egalax_read_data,
543 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
550 .read_data = panjit_read_data,
554 #ifdef CONFIG_TOUCHSCREEN_USB_3M
561 .read_data = mtouch_read_data,
566 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
574 .read_data = itm_read_data,
578 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
585 .flags = USBTOUCH_FLG_BUFFER,
586 .process_pkt = usbtouch_process_multi,
587 .get_pkt_len = eturbo_get_pkt_len,
588 .read_data = eturbo_read_data,
592 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
599 .read_data = gunze_read_data,
603 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
604 [DEVTYPE_DMC_TSC10] = {
610 .init = dmc_tsc10_init,
611 .read_data = dmc_tsc10_read_data,
615 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
616 [DEVTYPE_IRTOUCH] = {
622 .read_data = irtouch_read_data,
626 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
627 [DEVTYPE_IDEALTEK] = {
633 .flags = USBTOUCH_FLG_BUFFER,
634 .process_pkt = usbtouch_process_multi,
635 .get_pkt_len = idealtek_get_pkt_len,
636 .read_data = idealtek_read_data,
640 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
641 [DEVTYPE_GENERAL_TOUCH] = {
647 .read_data = general_touch_read_data,
651 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
658 .read_data = gotop_read_data,
664 /*****************************************************************************
667 static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
668 unsigned char *pkt, int len)
670 struct usbtouch_device_info *type = usbtouch->type;
672 if (!type->read_data(usbtouch, pkt))
675 input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
678 input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
679 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
681 input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
682 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
685 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
686 input_sync(usbtouch->input);
691 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
692 unsigned char *pkt, int len)
694 unsigned char *buffer;
695 int pkt_len, pos, buf_len, tmp;
698 if (unlikely(usbtouch->buf_len)) {
699 /* try to get size */
700 pkt_len = usbtouch->type->get_pkt_len(
701 usbtouch->buffer, usbtouch->buf_len);
704 if (unlikely(!pkt_len))
707 /* need to append -pkt_len bytes before able to get size */
708 if (unlikely(pkt_len < 0)) {
709 int append = -pkt_len;
710 if (unlikely(append > len))
712 if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
714 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
715 usbtouch->buf_len += append;
717 pkt_len = usbtouch->type->get_pkt_len(
718 usbtouch->buffer, usbtouch->buf_len);
724 tmp = pkt_len - usbtouch->buf_len;
725 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
727 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
728 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
737 /* loop over the received packet, process */
739 while (pos < buf_len) {
741 pkt_len = usbtouch->type->get_pkt_len(buffer + pos, len);
743 /* unknown packet: drop everything */
744 if (unlikely(!pkt_len))
747 /* full packet: process */
748 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
749 usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
751 /* incomplete packet: save in buffer */
752 memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
753 usbtouch->buf_len = buf_len - pos;
760 usbtouch->buf_len = 0;
766 static void usbtouch_irq(struct urb *urb)
768 struct usbtouch_usb *usbtouch = urb->context;
771 switch (urb->status) {
776 /* this urb is timing out */
777 dbg("%s - urb timed out - was the device unplugged?",
783 /* this urb is terminated, clean up */
784 dbg("%s - urb shutting down with status: %d",
785 __FUNCTION__, urb->status);
788 dbg("%s - nonzero urb status received: %d",
789 __FUNCTION__, urb->status);
793 usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
796 retval = usb_submit_urb(urb, GFP_ATOMIC);
798 err("%s - usb_submit_urb failed with result: %d",
799 __FUNCTION__, retval);
802 static int usbtouch_open(struct input_dev *input)
804 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
806 usbtouch->irq->dev = usbtouch->udev;
808 if (usb_submit_urb(usbtouch->irq, GFP_KERNEL))
814 static void usbtouch_close(struct input_dev *input)
816 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
818 usb_kill_urb(usbtouch->irq);
822 static void usbtouch_free_buffers(struct usb_device *udev,
823 struct usbtouch_usb *usbtouch)
825 usb_buffer_free(udev, usbtouch->type->rept_size,
826 usbtouch->data, usbtouch->data_dma);
827 kfree(usbtouch->buffer);
831 static int usbtouch_probe(struct usb_interface *intf,
832 const struct usb_device_id *id)
834 struct usbtouch_usb *usbtouch;
835 struct input_dev *input_dev;
836 struct usb_host_interface *interface;
837 struct usb_endpoint_descriptor *endpoint;
838 struct usb_device *udev = interface_to_usbdev(intf);
839 struct usbtouch_device_info *type;
842 interface = intf->cur_altsetting;
843 endpoint = &interface->endpoint[0].desc;
845 usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
846 input_dev = input_allocate_device();
847 if (!usbtouch || !input_dev)
850 type = &usbtouch_dev_info[id->driver_info];
851 usbtouch->type = type;
852 if (!type->process_pkt)
853 type->process_pkt = usbtouch_process_pkt;
855 usbtouch->data = usb_buffer_alloc(udev, type->rept_size,
856 GFP_KERNEL, &usbtouch->data_dma);
860 if (type->flags & USBTOUCH_FLG_BUFFER) {
861 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
862 if (!usbtouch->buffer)
863 goto out_free_buffers;
866 usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
867 if (!usbtouch->irq) {
868 dbg("%s - usb_alloc_urb failed: usbtouch->irq", __FUNCTION__);
869 goto out_free_buffers;
872 usbtouch->udev = udev;
873 usbtouch->input = input_dev;
875 if (udev->manufacturer)
876 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
879 if (udev->manufacturer)
880 strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
881 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
884 if (!strlen(usbtouch->name))
885 snprintf(usbtouch->name, sizeof(usbtouch->name),
886 "USB Touchscreen %04x:%04x",
887 le16_to_cpu(udev->descriptor.idVendor),
888 le16_to_cpu(udev->descriptor.idProduct));
890 usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
891 strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
893 input_dev->name = usbtouch->name;
894 input_dev->phys = usbtouch->phys;
895 usb_to_input_id(udev, &input_dev->id);
896 input_dev->dev.parent = &intf->dev;
898 input_set_drvdata(input_dev, usbtouch);
900 input_dev->open = usbtouch_open;
901 input_dev->close = usbtouch_close;
903 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
904 input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
905 input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0);
906 input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0);
908 input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press,
909 type->max_press, 0, 0);
911 usb_fill_int_urb(usbtouch->irq, usbtouch->udev,
912 usb_rcvintpipe(usbtouch->udev, endpoint->bEndpointAddress),
913 usbtouch->data, type->rept_size,
914 usbtouch_irq, usbtouch, endpoint->bInterval);
916 usbtouch->irq->dev = usbtouch->udev;
917 usbtouch->irq->transfer_dma = usbtouch->data_dma;
918 usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
920 /* device specific init */
922 err = type->init(usbtouch);
924 dbg("%s - type->init() failed, err: %d", __FUNCTION__, err);
925 goto out_free_buffers;
929 err = input_register_device(usbtouch->input);
931 dbg("%s - input_register_device failed, err: %d", __FUNCTION__, err);
932 goto out_free_buffers;
935 usb_set_intfdata(intf, usbtouch);
940 usbtouch_free_buffers(udev, usbtouch);
942 input_free_device(input_dev);
947 static void usbtouch_disconnect(struct usb_interface *intf)
949 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
951 dbg("%s - called", __FUNCTION__);
956 dbg("%s - usbtouch is initialized, cleaning up", __FUNCTION__);
957 usb_set_intfdata(intf, NULL);
958 usb_kill_urb(usbtouch->irq);
959 input_unregister_device(usbtouch->input);
960 usb_free_urb(usbtouch->irq);
961 usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch);
965 MODULE_DEVICE_TABLE(usb, usbtouch_devices);
967 static struct usb_driver usbtouch_driver = {
968 .name = "usbtouchscreen",
969 .probe = usbtouch_probe,
970 .disconnect = usbtouch_disconnect,
971 .id_table = usbtouch_devices,
974 static int __init usbtouch_init(void)
976 return usb_register(&usbtouch_driver);
979 static void __exit usbtouch_cleanup(void)
981 usb_deregister(&usbtouch_driver);
984 module_init(usbtouch_init);
985 module_exit(usbtouch_cleanup);
987 MODULE_AUTHOR(DRIVER_AUTHOR);
988 MODULE_DESCRIPTION(DRIVER_DESC);
989 MODULE_LICENSE("GPL");
991 MODULE_ALIAS("touchkitusb");
992 MODULE_ALIAS("itmtouch");
993 MODULE_ALIAS("mtouchusb");