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
15 * - GoTop Super_Q2/GogoPen/PenPower tablets
16 * - JASTEC USB touch controller/DigiTech DTR-02U
17 * - Zytronic capacitive touchscreen
19 * - Elo TouchSystems 2700 IntelliTouch
20 * - EasyTouch USB Dual/Multi touch controller from Data Modul
22 * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
23 * Copyright (C) by Todd E. Johnson (mtouchusb.c)
25 * This program is free software; you can redistribute it and/or
26 * modify it under the terms of the GNU General Public License as
27 * published by the Free Software Foundation; either version 2 of the
28 * License, or (at your option) any later version.
30 * This program is distributed in the hope that it will be useful, but
31 * WITHOUT ANY WARRANTY; without even the implied warranty of
32 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
33 * General Public License for more details.
35 * You should have received a copy of the GNU General Public License
36 * along with this program; if not, write to the Free Software
37 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
39 * Driver is based on touchkitusb.c
40 * - ITM parts are from itmtouch.c
41 * - 3M parts are from mtouchusb.c
42 * - PanJit parts are from an unmerged driver by Lanslott Gish
43 * - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged
44 * driver from Marius Vollmer
46 *****************************************************************************/
50 #include <linux/kernel.h>
51 #include <linux/slab.h>
52 #include <linux/input.h>
53 #include <linux/module.h>
54 #include <linux/usb.h>
55 #include <linux/usb/input.h>
56 #include <linux/hid.h>
59 #define DRIVER_VERSION "v0.6"
60 #define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>"
61 #define DRIVER_DESC "USB Touchscreen Driver"
64 module_param(swap_xy, bool, 0644);
65 MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
67 static bool hwcalib_xy;
68 module_param(hwcalib_xy, bool, 0644);
69 MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available");
71 /* device specifc data/functions */
73 struct usbtouch_device_info {
76 int min_press, max_press;
80 * Always service the USB devices irq not just when the input device is
81 * open. This is useful when devices have a watchdog which prevents us
82 * from periodically polling the device. Leave this unset unless your
83 * touchscreen device requires it, as it does consume more of the USB
88 void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
91 * used to get the packet len. possible return values:
94 * < 0: -return value more bytes needed
96 int (*get_pkt_len) (unsigned char *pkt, int len);
98 int (*read_data) (struct usbtouch_usb *usbtouch, unsigned char *pkt);
99 int (*alloc) (struct usbtouch_usb *usbtouch);
100 int (*init) (struct usbtouch_usb *usbtouch);
101 void (*exit) (struct usbtouch_usb *usbtouch);
104 /* a usbtouch device */
105 struct usbtouch_usb {
109 unsigned char *buffer;
112 struct usb_interface *interface;
113 struct input_dev *input;
114 struct usbtouch_device_info *type;
135 DEVTYPE_IRTOUCH_HIRES,
137 DEVTYPE_GENERAL_TOUCH,
148 #define USB_DEVICE_HID_CLASS(vend, prod) \
149 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
150 | USB_DEVICE_ID_MATCH_DEVICE, \
151 .idVendor = (vend), \
152 .idProduct = (prod), \
153 .bInterfaceClass = USB_INTERFACE_CLASS_HID
155 static const struct usb_device_id usbtouch_devices[] = {
156 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
157 /* ignore the HID capable devices, handled by usbhid */
158 {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE},
159 {USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE},
161 /* normal device IDs */
162 {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
163 {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
164 {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
165 {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
166 {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
167 {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
168 {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
171 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
172 {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
173 {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
174 {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
175 {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
178 #ifdef CONFIG_TOUCHSCREEN_USB_3M
179 {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
182 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
183 {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
184 {USB_DEVICE(0x16e3, 0xf9e9), .driver_info = DEVTYPE_ITM},
187 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
188 {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
191 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
192 {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
195 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
196 {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
199 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
200 {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
201 {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
202 {USB_DEVICE(0x6615, 0x0012), .driver_info = DEVTYPE_IRTOUCH_HIRES},
205 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
206 {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
209 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
210 {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
213 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
214 {USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP},
215 {USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP},
216 {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
219 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
220 {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
223 #ifdef CONFIG_TOUCHSCREEN_USB_E2I
224 {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
227 #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
228 {USB_DEVICE(0x14c8, 0x0003), .driver_info = DEVTYPE_ZYTRONIC},
231 #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
233 {USB_DEVICE(0x0664, 0x0309), .driver_info = DEVTYPE_TC45USB},
235 {USB_DEVICE(0x0664, 0x0306), .driver_info = DEVTYPE_TC45USB},
238 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
239 /* data interface only */
240 {USB_DEVICE_AND_INTERFACE_INFO(0x10f0, 0x2002, 0x0a, 0x00, 0x00),
241 .driver_info = DEVTYPE_NEXIO},
242 {USB_DEVICE_AND_INTERFACE_INFO(0x1870, 0x0001, 0x0a, 0x00, 0x00),
243 .driver_info = DEVTYPE_NEXIO},
246 #ifdef CONFIG_TOUCHSCREEN_USB_ELO
247 {USB_DEVICE(0x04e7, 0x0020), .driver_info = DEVTYPE_ELO},
250 #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
251 {USB_DEVICE(0x7374, 0x0001), .driver_info = DEVTYPE_ETOUCH},
258 /*****************************************************************************
262 #ifdef CONFIG_TOUCHSCREEN_USB_E2I
263 static int e2i_init(struct usbtouch_usb *usbtouch)
266 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
268 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
269 0x01, 0x02, 0x0000, 0x0081,
270 NULL, 0, USB_CTRL_SET_TIMEOUT);
272 dev_dbg(&usbtouch->interface->dev,
273 "%s - usb_control_msg - E2I_RESET - bytes|err: %d\n",
278 static int e2i_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
280 int tmp = (pkt[0] << 8) | pkt[1];
281 dev->x = (pkt[2] << 8) | pkt[3];
282 dev->y = (pkt[4] << 8) | pkt[5];
285 dev->touch = (tmp > 0);
286 dev->press = (tmp > 0 ? tmp : 0);
293 /*****************************************************************************
297 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
303 #define EGALAX_PKT_TYPE_MASK 0xFE
304 #define EGALAX_PKT_TYPE_REPT 0x80
305 #define EGALAX_PKT_TYPE_DIAG 0x0A
307 static int egalax_init(struct usbtouch_usb *usbtouch)
311 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
314 * An eGalax diagnostic packet kicks the device into using the right
315 * protocol. We send a "check active" packet. The response will be
316 * read later and ignored.
319 buf = kmalloc(3, GFP_KERNEL);
323 buf[0] = EGALAX_PKT_TYPE_DIAG;
324 buf[1] = 1; /* length */
325 buf[2] = 'A'; /* command - check active */
327 for (i = 0; i < 3; i++) {
328 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
330 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
332 USB_CTRL_SET_TIMEOUT);
346 static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
348 if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT)
351 dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F);
352 dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F);
353 dev->touch = pkt[0] & 0x01;
358 static int egalax_get_pkt_len(unsigned char *buf, int len)
360 switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
361 case EGALAX_PKT_TYPE_REPT:
364 case EGALAX_PKT_TYPE_DIAG:
375 /*****************************************************************************
379 #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
385 #define ETOUCH_PKT_TYPE_MASK 0xFE
386 #define ETOUCH_PKT_TYPE_REPT 0x80
387 #define ETOUCH_PKT_TYPE_REPT2 0xB0
388 #define ETOUCH_PKT_TYPE_DIAG 0x0A
390 static int etouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
392 if ((pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT &&
393 (pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT2)
396 dev->x = ((pkt[1] & 0x1F) << 7) | (pkt[2] & 0x7F);
397 dev->y = ((pkt[3] & 0x1F) << 7) | (pkt[4] & 0x7F);
398 dev->touch = pkt[0] & 0x01;
403 static int etouch_get_pkt_len(unsigned char *buf, int len)
405 switch (buf[0] & ETOUCH_PKT_TYPE_MASK) {
406 case ETOUCH_PKT_TYPE_REPT:
407 case ETOUCH_PKT_TYPE_REPT2:
410 case ETOUCH_PKT_TYPE_DIAG:
421 /*****************************************************************************
424 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
425 static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
427 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
428 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
429 dev->touch = pkt[0] & 0x01;
436 /*****************************************************************************
439 #ifdef CONFIG_TOUCHSCREEN_USB_3M
441 #define MTOUCHUSB_ASYNC_REPORT 1
442 #define MTOUCHUSB_RESET 7
443 #define MTOUCHUSB_REQ_CTRLLR_ID 10
445 static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
448 dev->x = (pkt[4] << 8) | pkt[3];
449 dev->y = 0xffff - ((pkt[6] << 8) | pkt[5]);
451 dev->x = (pkt[8] << 8) | pkt[7];
452 dev->y = (pkt[10] << 8) | pkt[9];
454 dev->touch = (pkt[2] & 0x40) ? 1 : 0;
459 static int mtouch_init(struct usbtouch_usb *usbtouch)
462 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
464 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
466 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
467 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
468 dev_dbg(&usbtouch->interface->dev,
469 "%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d\n",
475 for (i = 0; i < 3; i++) {
476 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
477 MTOUCHUSB_ASYNC_REPORT,
478 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
479 1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
480 dev_dbg(&usbtouch->interface->dev,
481 "%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d\n",
489 /* Default min/max xy are the raw values, override if using hw-calib */
491 input_set_abs_params(usbtouch->input, ABS_X, 0, 0xffff, 0, 0);
492 input_set_abs_params(usbtouch->input, ABS_Y, 0, 0xffff, 0, 0);
500 /*****************************************************************************
503 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
504 static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
508 * ITM devices report invalid x/y data if not touched.
509 * if the screen was touched before but is not touched any more
510 * report touch as 0 with the last valid x/y data once. then stop
511 * reporting data until touched again.
513 dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F);
515 touch = ~pkt[7] & 0x20;
525 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
526 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
534 /*****************************************************************************
537 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
541 static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
545 /* packets should start with sync */
546 if (!(pkt[0] & 0x80))
549 shift = (6 - (pkt[0] & 0x03));
550 dev->x = ((pkt[3] << 7) | pkt[4]) >> shift;
551 dev->y = ((pkt[1] << 7) | pkt[2]) >> shift;
552 dev->touch = (pkt[0] & 0x10) ? 1 : 0;
557 static int eturbo_get_pkt_len(unsigned char *buf, int len)
568 /*****************************************************************************
571 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
572 static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
574 if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
577 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F);
578 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F);
579 dev->touch = pkt[0] & 0x20;
585 /*****************************************************************************
588 * Documentation about the controller and it's protocol can be found at
589 * http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf
590 * http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf
592 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
594 /* supported data rates. currently using 130 */
595 #define TSC10_RATE_POINT 0x50
596 #define TSC10_RATE_30 0x40
597 #define TSC10_RATE_50 0x41
598 #define TSC10_RATE_80 0x42
599 #define TSC10_RATE_100 0x43
600 #define TSC10_RATE_130 0x44
601 #define TSC10_RATE_150 0x45
604 #define TSC10_CMD_RESET 0x55
605 #define TSC10_CMD_RATE 0x05
606 #define TSC10_CMD_DATA1 0x01
608 static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
610 struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
614 buf = kmalloc(2, GFP_NOIO);
618 buf[0] = buf[1] = 0xFF;
619 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
621 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
622 0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
625 if (buf[0] != 0x06) {
630 /* TSC-25 data sheet specifies a delay after the RESET command */
633 /* set coordinate output rate */
634 buf[0] = buf[1] = 0xFF;
635 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
637 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
638 TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
641 if ((buf[0] != 0x06) && (buf[0] != 0x15 || buf[1] != 0x01)) {
646 /* start sending data */
647 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
649 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
650 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
658 static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
660 dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
661 dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
662 dev->touch = pkt[0] & 0x01;
669 /*****************************************************************************
672 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
673 static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
675 dev->x = (pkt[3] << 8) | pkt[2];
676 dev->y = (pkt[5] << 8) | pkt[4];
677 dev->touch = (pkt[1] & 0x03) ? 1 : 0;
683 /*****************************************************************************
684 * ET&T TC5UH/TC4UM part
686 #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
687 static int tc45usb_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
689 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
690 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
691 dev->touch = pkt[0] & 0x01;
697 /*****************************************************************************
698 * IdealTEK URTC1000 Part
700 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
704 static int idealtek_get_pkt_len(unsigned char *buf, int len)
713 static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
715 switch (pkt[0] & 0x98) {
717 /* touch data in IdealTEK mode */
718 dev->x = (pkt[1] << 5) | (pkt[2] >> 2);
719 dev->y = (pkt[3] << 5) | (pkt[4] >> 2);
720 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
724 /* touch data in MT emulation mode */
725 dev->x = (pkt[2] << 5) | (pkt[1] >> 2);
726 dev->y = (pkt[4] << 5) | (pkt[3] >> 2);
727 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
736 /*****************************************************************************
739 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
740 static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
742 dev->x = (pkt[2] << 8) | pkt[1];
743 dev->y = (pkt[4] << 8) | pkt[3];
744 dev->press = pkt[5] & 0xff;
745 dev->touch = pkt[0] & 0x01;
751 /*****************************************************************************
754 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
755 static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
757 dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
758 dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
759 dev->touch = pkt[0] & 0x01;
765 /*****************************************************************************
768 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
769 static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
771 dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f);
772 dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f);
773 dev->touch = (pkt[0] & 0x40) >> 6;
779 /*****************************************************************************
782 #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
783 static int zytronic_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
785 struct usb_interface *intf = dev->interface;
788 case 0x3A: /* command response */
789 dev_dbg(&intf->dev, "%s: Command response %d\n", __func__, pkt[1]);
792 case 0xC0: /* down */
793 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
794 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
796 dev_dbg(&intf->dev, "%s: down %d,%d\n", __func__, dev->x, dev->y);
800 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
801 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
803 dev_dbg(&intf->dev, "%s: up %d,%d\n", __func__, dev->x, dev->y);
807 dev_dbg(&intf->dev, "%s: Unknown return %d\n", __func__, pkt[0]);
815 /*****************************************************************************
818 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
820 #define NEXIO_TIMEOUT 5000
821 #define NEXIO_BUFSIZE 1024
822 #define NEXIO_THRESHOLD 50
826 unsigned char *ack_buf;
829 struct nexio_touch_packet {
830 u8 flags; /* 0xe1 = touch, 0xe1 = release */
831 __be16 data_len; /* total bytes of touch data */
832 __be16 x_len; /* bytes for X axis */
833 __be16 y_len; /* bytes for Y axis */
835 } __attribute__ ((packed));
837 static unsigned char nexio_ack_pkt[2] = { 0xaa, 0x02 };
838 static unsigned char nexio_init_pkt[4] = { 0x82, 0x04, 0x0a, 0x0f };
840 static void nexio_ack_complete(struct urb *urb)
844 static int nexio_alloc(struct usbtouch_usb *usbtouch)
846 struct nexio_priv *priv;
849 usbtouch->priv = kmalloc(sizeof(struct nexio_priv), GFP_KERNEL);
853 priv = usbtouch->priv;
855 priv->ack_buf = kmemdup(nexio_ack_pkt, sizeof(nexio_ack_pkt),
860 priv->ack = usb_alloc_urb(0, GFP_KERNEL);
862 dev_dbg(&usbtouch->interface->dev,
863 "%s - usb_alloc_urb failed: usbtouch->ack\n", __func__);
870 kfree(priv->ack_buf);
877 static int nexio_init(struct usbtouch_usb *usbtouch)
879 struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
880 struct usb_host_interface *interface = usbtouch->interface->cur_altsetting;
881 struct nexio_priv *priv = usbtouch->priv;
885 char *firmware_ver = NULL, *device_name = NULL;
886 int input_ep = 0, output_ep = 0;
888 /* find first input and output endpoint */
889 for (i = 0; i < interface->desc.bNumEndpoints; i++) {
891 usb_endpoint_dir_in(&interface->endpoint[i].desc))
892 input_ep = interface->endpoint[i].desc.bEndpointAddress;
894 usb_endpoint_dir_out(&interface->endpoint[i].desc))
895 output_ep = interface->endpoint[i].desc.bEndpointAddress;
897 if (!input_ep || !output_ep)
900 buf = kmalloc(NEXIO_BUFSIZE, GFP_NOIO);
904 /* two empty reads */
905 for (i = 0; i < 2; i++) {
906 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
907 buf, NEXIO_BUFSIZE, &actual_len,
913 /* send init command */
914 memcpy(buf, nexio_init_pkt, sizeof(nexio_init_pkt));
915 ret = usb_bulk_msg(dev, usb_sndbulkpipe(dev, output_ep),
916 buf, sizeof(nexio_init_pkt), &actual_len,
922 for (i = 0; i < 3; i++) {
923 memset(buf, 0, NEXIO_BUFSIZE);
924 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
925 buf, NEXIO_BUFSIZE, &actual_len,
927 if (ret < 0 || actual_len < 1 || buf[1] != actual_len)
930 case 0x83: /* firmware version */
932 firmware_ver = kstrdup(&buf[2], GFP_NOIO);
934 case 0x84: /* device name */
936 device_name = kstrdup(&buf[2], GFP_NOIO);
941 printk(KERN_INFO "Nexio device: %s, firmware version: %s\n",
942 device_name, firmware_ver);
947 usb_fill_bulk_urb(priv->ack, dev, usb_sndbulkpipe(dev, output_ep),
948 priv->ack_buf, sizeof(nexio_ack_pkt),
949 nexio_ack_complete, usbtouch);
957 static void nexio_exit(struct usbtouch_usb *usbtouch)
959 struct nexio_priv *priv = usbtouch->priv;
961 usb_kill_urb(priv->ack);
962 usb_free_urb(priv->ack);
963 kfree(priv->ack_buf);
967 static int nexio_read_data(struct usbtouch_usb *usbtouch, unsigned char *pkt)
969 struct nexio_touch_packet *packet = (void *) pkt;
970 struct nexio_priv *priv = usbtouch->priv;
971 unsigned int data_len = be16_to_cpu(packet->data_len);
972 unsigned int x_len = be16_to_cpu(packet->x_len);
973 unsigned int y_len = be16_to_cpu(packet->y_len);
974 int x, y, begin_x, begin_y, end_x, end_y, w, h, ret;
976 /* got touch data? */
977 if ((pkt[0] & 0xe0) != 0xe0)
986 ret = usb_submit_urb(priv->ack, GFP_ATOMIC);
988 if (!usbtouch->type->max_xc) {
989 usbtouch->type->max_xc = 2 * x_len;
990 input_set_abs_params(usbtouch->input, ABS_X,
991 0, usbtouch->type->max_xc, 0, 0);
992 usbtouch->type->max_yc = 2 * y_len;
993 input_set_abs_params(usbtouch->input, ABS_Y,
994 0, usbtouch->type->max_yc, 0, 0);
997 * The device reports state of IR sensors on X and Y axes.
998 * Each byte represents "darkness" percentage (0-100) of one element.
999 * 17" touchscreen reports only 64 x 52 bytes so the resolution is low.
1000 * This also means that there's a limited multi-touch capability but
1001 * it's disabled (and untested) here as there's no X driver for that.
1003 begin_x = end_x = begin_y = end_y = -1;
1004 for (x = 0; x < x_len; x++) {
1005 if (begin_x == -1 && packet->data[x] > NEXIO_THRESHOLD) {
1009 if (end_x == -1 && begin_x != -1 && packet->data[x] < NEXIO_THRESHOLD) {
1011 for (y = x_len; y < data_len; y++) {
1012 if (begin_y == -1 && packet->data[y] > NEXIO_THRESHOLD) {
1013 begin_y = y - x_len;
1017 begin_y != -1 && packet->data[y] < NEXIO_THRESHOLD) {
1018 end_y = y - 1 - x_len;
1019 w = end_x - begin_x;
1020 h = end_y - begin_y;
1023 input_report_abs(usbtouch->input,
1024 ABS_MT_TOUCH_MAJOR, max(w,h));
1025 input_report_abs(usbtouch->input,
1026 ABS_MT_TOUCH_MINOR, min(x,h));
1027 input_report_abs(usbtouch->input,
1028 ABS_MT_POSITION_X, 2*begin_x+w);
1029 input_report_abs(usbtouch->input,
1030 ABS_MT_POSITION_Y, 2*begin_y+h);
1031 input_report_abs(usbtouch->input,
1032 ABS_MT_ORIENTATION, w > h);
1033 input_mt_sync(usbtouch->input);
1036 usbtouch->x = 2 * begin_x + w;
1037 usbtouch->y = 2 * begin_y + h;
1038 usbtouch->touch = packet->flags & 0x01;
1039 begin_y = end_y = -1;
1043 begin_x = end_x = -1;
1052 /*****************************************************************************
1056 #ifdef CONFIG_TOUCHSCREEN_USB_ELO
1058 static int elo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
1060 dev->x = (pkt[3] << 8) | pkt[2];
1061 dev->y = (pkt[5] << 8) | pkt[4];
1062 dev->touch = pkt[6] > 0;
1063 dev->press = pkt[6];
1070 /*****************************************************************************
1071 * the different device descriptors
1074 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1075 unsigned char *pkt, int len);
1078 static struct usbtouch_device_info usbtouch_dev_info[] = {
1079 #ifdef CONFIG_TOUCHSCREEN_USB_ELO
1087 .read_data = elo_read_data,
1091 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
1092 [DEVTYPE_EGALAX] = {
1098 .process_pkt = usbtouch_process_multi,
1099 .get_pkt_len = egalax_get_pkt_len,
1100 .read_data = egalax_read_data,
1101 .init = egalax_init,
1105 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
1106 [DEVTYPE_PANJIT] = {
1112 .read_data = panjit_read_data,
1116 #ifdef CONFIG_TOUCHSCREEN_USB_3M
1123 .read_data = mtouch_read_data,
1124 .init = mtouch_init,
1128 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
1136 .read_data = itm_read_data,
1140 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
1141 [DEVTYPE_ETURBO] = {
1147 .process_pkt = usbtouch_process_multi,
1148 .get_pkt_len = eturbo_get_pkt_len,
1149 .read_data = eturbo_read_data,
1153 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
1160 .read_data = gunze_read_data,
1164 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
1165 [DEVTYPE_DMC_TSC10] = {
1171 .init = dmc_tsc10_init,
1172 .read_data = dmc_tsc10_read_data,
1176 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
1177 [DEVTYPE_IRTOUCH] = {
1183 .read_data = irtouch_read_data,
1186 [DEVTYPE_IRTOUCH_HIRES] = {
1192 .read_data = irtouch_read_data,
1196 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
1197 [DEVTYPE_IDEALTEK] = {
1203 .process_pkt = usbtouch_process_multi,
1204 .get_pkt_len = idealtek_get_pkt_len,
1205 .read_data = idealtek_read_data,
1209 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
1210 [DEVTYPE_GENERAL_TOUCH] = {
1216 .read_data = general_touch_read_data,
1220 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
1227 .read_data = gotop_read_data,
1231 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
1232 [DEVTYPE_JASTEC] = {
1238 .read_data = jastec_read_data,
1242 #ifdef CONFIG_TOUCHSCREEN_USB_E2I
1250 .read_data = e2i_read_data,
1254 #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
1255 [DEVTYPE_ZYTRONIC] = {
1261 .read_data = zytronic_read_data,
1266 #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
1267 [DEVTYPE_TC45USB] = {
1273 .read_data = tc45usb_read_data,
1277 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
1281 .read_data = nexio_read_data,
1282 .alloc = nexio_alloc,
1287 #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
1288 [DEVTYPE_ETOUCH] = {
1294 .process_pkt = usbtouch_process_multi,
1295 .get_pkt_len = etouch_get_pkt_len,
1296 .read_data = etouch_read_data,
1302 /*****************************************************************************
1305 static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
1306 unsigned char *pkt, int len)
1308 struct usbtouch_device_info *type = usbtouch->type;
1310 if (!type->read_data(usbtouch, pkt))
1313 input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
1316 input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
1317 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
1319 input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
1320 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
1322 if (type->max_press)
1323 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
1324 input_sync(usbtouch->input);
1329 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1330 unsigned char *pkt, int len)
1332 unsigned char *buffer;
1333 int pkt_len, pos, buf_len, tmp;
1335 /* process buffer */
1336 if (unlikely(usbtouch->buf_len)) {
1337 /* try to get size */
1338 pkt_len = usbtouch->type->get_pkt_len(
1339 usbtouch->buffer, usbtouch->buf_len);
1342 if (unlikely(!pkt_len))
1345 /* need to append -pkt_len bytes before able to get size */
1346 if (unlikely(pkt_len < 0)) {
1347 int append = -pkt_len;
1348 if (unlikely(append > len))
1350 if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
1352 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
1353 usbtouch->buf_len += append;
1355 pkt_len = usbtouch->type->get_pkt_len(
1356 usbtouch->buffer, usbtouch->buf_len);
1362 tmp = pkt_len - usbtouch->buf_len;
1363 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
1365 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
1366 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
1369 buf_len = len - tmp;
1375 /* loop over the received packet, process */
1377 while (pos < buf_len) {
1378 /* get packet len */
1379 pkt_len = usbtouch->type->get_pkt_len(buffer + pos,
1382 /* unknown packet: skip one byte */
1383 if (unlikely(!pkt_len)) {
1388 /* full packet: process */
1389 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
1390 usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
1392 /* incomplete packet: save in buffer */
1393 memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
1394 usbtouch->buf_len = buf_len - pos;
1401 usbtouch->buf_len = 0;
1407 static void usbtouch_irq(struct urb *urb)
1409 struct usbtouch_usb *usbtouch = urb->context;
1410 struct device *dev = &usbtouch->interface->dev;
1413 switch (urb->status) {
1418 /* this urb is timing out */
1420 "%s - urb timed out - was the device unplugged?\n",
1427 /* this urb is terminated, clean up */
1428 dev_dbg(dev, "%s - urb shutting down with status: %d\n",
1429 __func__, urb->status);
1432 dev_dbg(dev, "%s - nonzero urb status received: %d\n",
1433 __func__, urb->status);
1437 usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
1440 usb_mark_last_busy(interface_to_usbdev(usbtouch->interface));
1441 retval = usb_submit_urb(urb, GFP_ATOMIC);
1443 dev_err(dev, "%s - usb_submit_urb failed with result: %d\n",
1447 static int usbtouch_open(struct input_dev *input)
1449 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1452 usbtouch->irq->dev = interface_to_usbdev(usbtouch->interface);
1454 r = usb_autopm_get_interface(usbtouch->interface) ? -EIO : 0;
1458 if (!usbtouch->type->irq_always) {
1459 if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) {
1465 usbtouch->interface->needs_remote_wakeup = 1;
1467 usb_autopm_put_interface(usbtouch->interface);
1472 static void usbtouch_close(struct input_dev *input)
1474 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1477 if (!usbtouch->type->irq_always)
1478 usb_kill_urb(usbtouch->irq);
1479 r = usb_autopm_get_interface(usbtouch->interface);
1480 usbtouch->interface->needs_remote_wakeup = 0;
1482 usb_autopm_put_interface(usbtouch->interface);
1485 static int usbtouch_suspend
1486 (struct usb_interface *intf, pm_message_t message)
1488 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1490 usb_kill_urb(usbtouch->irq);
1495 static int usbtouch_resume(struct usb_interface *intf)
1497 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1498 struct input_dev *input = usbtouch->input;
1501 mutex_lock(&input->mutex);
1502 if (input->users || usbtouch->type->irq_always)
1503 result = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1504 mutex_unlock(&input->mutex);
1509 static int usbtouch_reset_resume(struct usb_interface *intf)
1511 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1512 struct input_dev *input = usbtouch->input;
1515 /* reinit the device */
1516 if (usbtouch->type->init) {
1517 err = usbtouch->type->init(usbtouch);
1520 "%s - type->init() failed, err: %d\n",
1526 /* restart IO if needed */
1527 mutex_lock(&input->mutex);
1529 err = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1530 mutex_unlock(&input->mutex);
1535 static void usbtouch_free_buffers(struct usb_device *udev,
1536 struct usbtouch_usb *usbtouch)
1538 usb_free_coherent(udev, usbtouch->data_size,
1539 usbtouch->data, usbtouch->data_dma);
1540 kfree(usbtouch->buffer);
1543 static struct usb_endpoint_descriptor *
1544 usbtouch_get_input_endpoint(struct usb_host_interface *interface)
1548 for (i = 0; i < interface->desc.bNumEndpoints; i++)
1549 if (usb_endpoint_dir_in(&interface->endpoint[i].desc))
1550 return &interface->endpoint[i].desc;
1555 static int usbtouch_probe(struct usb_interface *intf,
1556 const struct usb_device_id *id)
1558 struct usbtouch_usb *usbtouch;
1559 struct input_dev *input_dev;
1560 struct usb_endpoint_descriptor *endpoint;
1561 struct usb_device *udev = interface_to_usbdev(intf);
1562 struct usbtouch_device_info *type;
1565 /* some devices are ignored */
1566 if (id->driver_info == DEVTYPE_IGNORE)
1569 endpoint = usbtouch_get_input_endpoint(intf->cur_altsetting);
1573 usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
1574 input_dev = input_allocate_device();
1575 if (!usbtouch || !input_dev)
1578 type = &usbtouch_dev_info[id->driver_info];
1579 usbtouch->type = type;
1580 if (!type->process_pkt)
1581 type->process_pkt = usbtouch_process_pkt;
1583 usbtouch->data_size = type->rept_size;
1584 if (type->get_pkt_len) {
1586 * When dealing with variable-length packets we should
1587 * not request more than wMaxPacketSize bytes at once
1588 * as we do not know if there is more data coming or
1589 * we filled exactly wMaxPacketSize bytes and there is
1592 usbtouch->data_size = min(usbtouch->data_size,
1593 usb_endpoint_maxp(endpoint));
1596 usbtouch->data = usb_alloc_coherent(udev, usbtouch->data_size,
1597 GFP_KERNEL, &usbtouch->data_dma);
1598 if (!usbtouch->data)
1601 if (type->get_pkt_len) {
1602 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
1603 if (!usbtouch->buffer)
1604 goto out_free_buffers;
1607 usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
1608 if (!usbtouch->irq) {
1610 "%s - usb_alloc_urb failed: usbtouch->irq\n", __func__);
1611 goto out_free_buffers;
1614 usbtouch->interface = intf;
1615 usbtouch->input = input_dev;
1617 if (udev->manufacturer)
1618 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
1620 if (udev->product) {
1621 if (udev->manufacturer)
1622 strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
1623 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
1626 if (!strlen(usbtouch->name))
1627 snprintf(usbtouch->name, sizeof(usbtouch->name),
1628 "USB Touchscreen %04x:%04x",
1629 le16_to_cpu(udev->descriptor.idVendor),
1630 le16_to_cpu(udev->descriptor.idProduct));
1632 usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
1633 strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
1635 input_dev->name = usbtouch->name;
1636 input_dev->phys = usbtouch->phys;
1637 usb_to_input_id(udev, &input_dev->id);
1638 input_dev->dev.parent = &intf->dev;
1640 input_set_drvdata(input_dev, usbtouch);
1642 input_dev->open = usbtouch_open;
1643 input_dev->close = usbtouch_close;
1645 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1646 input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
1647 input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0);
1648 input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0);
1649 if (type->max_press)
1650 input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press,
1651 type->max_press, 0, 0);
1653 if (usb_endpoint_type(endpoint) == USB_ENDPOINT_XFER_INT)
1654 usb_fill_int_urb(usbtouch->irq, udev,
1655 usb_rcvintpipe(udev, endpoint->bEndpointAddress),
1656 usbtouch->data, usbtouch->data_size,
1657 usbtouch_irq, usbtouch, endpoint->bInterval);
1659 usb_fill_bulk_urb(usbtouch->irq, udev,
1660 usb_rcvbulkpipe(udev, endpoint->bEndpointAddress),
1661 usbtouch->data, usbtouch->data_size,
1662 usbtouch_irq, usbtouch);
1664 usbtouch->irq->dev = udev;
1665 usbtouch->irq->transfer_dma = usbtouch->data_dma;
1666 usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1668 /* device specific allocations */
1670 err = type->alloc(usbtouch);
1673 "%s - type->alloc() failed, err: %d\n",
1679 /* device specific initialisation*/
1681 err = type->init(usbtouch);
1684 "%s - type->init() failed, err: %d\n",
1690 err = input_register_device(usbtouch->input);
1693 "%s - input_register_device failed, err: %d\n",
1698 usb_set_intfdata(intf, usbtouch);
1700 if (usbtouch->type->irq_always) {
1701 /* this can't fail */
1702 usb_autopm_get_interface(intf);
1703 err = usb_submit_urb(usbtouch->irq, GFP_KERNEL);
1705 usb_autopm_put_interface(intf);
1707 "%s - usb_submit_urb failed with result: %d\n",
1709 goto out_unregister_input;
1715 out_unregister_input:
1716 input_unregister_device(input_dev);
1720 type->exit(usbtouch);
1722 usb_free_urb(usbtouch->irq);
1724 usbtouch_free_buffers(udev, usbtouch);
1726 input_free_device(input_dev);
1731 static void usbtouch_disconnect(struct usb_interface *intf)
1733 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1739 "%s - usbtouch is initialized, cleaning up\n", __func__);
1741 usb_set_intfdata(intf, NULL);
1742 /* this will stop IO via close */
1743 input_unregister_device(usbtouch->input);
1744 usb_free_urb(usbtouch->irq);
1745 if (usbtouch->type->exit)
1746 usbtouch->type->exit(usbtouch);
1747 usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch);
1751 MODULE_DEVICE_TABLE(usb, usbtouch_devices);
1753 static struct usb_driver usbtouch_driver = {
1754 .name = "usbtouchscreen",
1755 .probe = usbtouch_probe,
1756 .disconnect = usbtouch_disconnect,
1757 .suspend = usbtouch_suspend,
1758 .resume = usbtouch_resume,
1759 .reset_resume = usbtouch_reset_resume,
1760 .id_table = usbtouch_devices,
1761 .supports_autosuspend = 1,
1764 module_usb_driver(usbtouch_driver);
1766 MODULE_AUTHOR(DRIVER_AUTHOR);
1767 MODULE_DESCRIPTION(DRIVER_DESC);
1768 MODULE_LICENSE("GPL");
1770 MODULE_ALIAS("touchkitusb");
1771 MODULE_ALIAS("itmtouch");
1772 MODULE_ALIAS("mtouchusb");