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1/******************************************************************************
2 * usbtouchscreen.c
3 * Driver for USB Touchscreens, supporting those devices:
4 * - eGalax Touchkit
5 * includes eTurboTouch CT-410/510/700
6 * - 3M/Microtouch EX II series
7 * - ITM
8 * - PanJit TouchSet
9 * - eTurboTouch
10 * - Gunze AHL61
11 * - DMC TSC-10/25
12 * - IRTOUCHSYSTEMS/UNITOP
13 * - IdealTEK URTC1000
14 * - General Touch
15 * - GoTop Super_Q2/GogoPen/PenPower tablets
16 * - JASTEC USB touch controller/DigiTech DTR-02U
17 * - Zytronic capacitive touchscreen
18 * - NEXIO/iNexio
19 * - Elo TouchSystems 2700 IntelliTouch
20 * - EasyTouch USB Dual/Multi touch controller from Data Modul
21 *
22 * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
23 * Copyright (C) by Todd E. Johnson (mtouchusb.c)
24 *
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.
29 *
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.
34 *
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.
38 *
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
45 *
46 *****************************************************************************/
47
48//#define DEBUG
49
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>
57
58
59#define DRIVER_VERSION "v0.6"
60#define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>"
61#define DRIVER_DESC "USB Touchscreen Driver"
62
63static bool swap_xy;
64module_param(swap_xy, bool, 0644);
65MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
66
67static bool hwcalib_xy;
68module_param(hwcalib_xy, bool, 0644);
69MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available");
70
71/* device specifc data/functions */
72struct usbtouch_usb;
73struct usbtouch_device_info {
74 int min_xc, max_xc;
75 int min_yc, max_yc;
76 int min_press, max_press;
77 int rept_size;
78
79 /*
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
84 * bandwidth.
85 */
86 bool irq_always;
87
88 void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
89
90 /*
91 * used to get the packet len. possible return values:
92 * > 0: packet len
93 * = 0: skip one byte
94 * < 0: -return value more bytes needed
95 */
96 int (*get_pkt_len) (unsigned char *pkt, int len);
97
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);
102};
103
104/* a usbtouch device */
105struct usbtouch_usb {
106 unsigned char *data;
107 dma_addr_t data_dma;
108 int data_size;
109 unsigned char *buffer;
110 int buf_len;
111 struct urb *irq;
112 struct usb_interface *interface;
113 struct input_dev *input;
114 struct usbtouch_device_info *type;
115 char name[128];
116 char phys[64];
117 void *priv;
118
119 int x, y;
120 int touch, press;
121};
122
123
124/* device types */
125enum {
126 DEVTYPE_IGNORE = -1,
127 DEVTYPE_EGALAX,
128 DEVTYPE_PANJIT,
129 DEVTYPE_3M,
130 DEVTYPE_ITM,
131 DEVTYPE_ETURBO,
132 DEVTYPE_GUNZE,
133 DEVTYPE_DMC_TSC10,
134 DEVTYPE_IRTOUCH,
135 DEVTYPE_IRTOUCH_HIRES,
136 DEVTYPE_IDEALTEK,
137 DEVTYPE_GENERAL_TOUCH,
138 DEVTYPE_GOTOP,
139 DEVTYPE_JASTEC,
140 DEVTYPE_E2I,
141 DEVTYPE_ZYTRONIC,
142 DEVTYPE_TC45USB,
143 DEVTYPE_NEXIO,
144 DEVTYPE_ELO,
145 DEVTYPE_ETOUCH,
146};
147
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
154
155static 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},
160
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},
169#endif
170
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},
176#endif
177
178#ifdef CONFIG_TOUCHSCREEN_USB_3M
179 {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
180#endif
181
182#ifdef CONFIG_TOUCHSCREEN_USB_ITM
183 {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
184 {USB_DEVICE(0x16e3, 0xf9e9), .driver_info = DEVTYPE_ITM},
185#endif
186
187#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
188 {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
189#endif
190
191#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
192 {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
193#endif
194
195#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
196 {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
197#endif
198
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},
203#endif
204
205#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
206 {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
207#endif
208
209#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
210 {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
211#endif
212
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},
217#endif
218
219#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
220 {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
221#endif
222
223#ifdef CONFIG_TOUCHSCREEN_USB_E2I
224 {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
225#endif
226
227#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
228 {USB_DEVICE(0x14c8, 0x0003), .driver_info = DEVTYPE_ZYTRONIC},
229#endif
230
231#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
232 /* TC5UH */
233 {USB_DEVICE(0x0664, 0x0309), .driver_info = DEVTYPE_TC45USB},
234 /* TC4UM */
235 {USB_DEVICE(0x0664, 0x0306), .driver_info = DEVTYPE_TC45USB},
236#endif
237
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},
244#endif
245
246#ifdef CONFIG_TOUCHSCREEN_USB_ELO
247 {USB_DEVICE(0x04e7, 0x0020), .driver_info = DEVTYPE_ELO},
248#endif
249
250#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
251 {USB_DEVICE(0x7374, 0x0001), .driver_info = DEVTYPE_ETOUCH},
252#endif
253
254 {}
255};
256
257
258/*****************************************************************************
259 * e2i Part
260 */
261
262#ifdef CONFIG_TOUCHSCREEN_USB_E2I
263static int e2i_init(struct usbtouch_usb *usbtouch)
264{
265 int ret;
266 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
267
268 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
269 0x01, 0x02, 0x0000, 0x0081,
270 NULL, 0, USB_CTRL_SET_TIMEOUT);
271
272 dev_dbg(&usbtouch->interface->dev,
273 "%s - usb_control_msg - E2I_RESET - bytes|err: %d\n",
274 __func__, ret);
275 return ret;
276}
277
278static int e2i_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
279{
280 int tmp = (pkt[0] << 8) | pkt[1];
281 dev->x = (pkt[2] << 8) | pkt[3];
282 dev->y = (pkt[4] << 8) | pkt[5];
283
284 tmp = tmp - 0xA000;
285 dev->touch = (tmp > 0);
286 dev->press = (tmp > 0 ? tmp : 0);
287
288 return 1;
289}
290#endif
291
292
293/*****************************************************************************
294 * eGalax part
295 */
296
297#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
298
299#ifndef MULTI_PACKET
300#define MULTI_PACKET
301#endif
302
303#define EGALAX_PKT_TYPE_MASK 0xFE
304#define EGALAX_PKT_TYPE_REPT 0x80
305#define EGALAX_PKT_TYPE_DIAG 0x0A
306
307static int egalax_init(struct usbtouch_usb *usbtouch)
308{
309 int ret, i;
310 unsigned char *buf;
311 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
312
313 /*
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.
317 */
318
319 buf = kmalloc(3, GFP_KERNEL);
320 if (!buf)
321 return -ENOMEM;
322
323 buf[0] = EGALAX_PKT_TYPE_DIAG;
324 buf[1] = 1; /* length */
325 buf[2] = 'A'; /* command - check active */
326
327 for (i = 0; i < 3; i++) {
328 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
329 0,
330 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
331 0, 0, buf, 3,
332 USB_CTRL_SET_TIMEOUT);
333 if (ret >= 0) {
334 ret = 0;
335 break;
336 }
337 if (ret != -EPIPE)
338 break;
339 }
340
341 kfree(buf);
342
343 return ret;
344}
345
346static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
347{
348 if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT)
349 return 0;
350
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;
354
355 return 1;
356}
357
358static int egalax_get_pkt_len(unsigned char *buf, int len)
359{
360 switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
361 case EGALAX_PKT_TYPE_REPT:
362 return 5;
363
364 case EGALAX_PKT_TYPE_DIAG:
365 if (len < 2)
366 return -1;
367
368 return buf[1] + 2;
369 }
370
371 return 0;
372}
373#endif
374
375/*****************************************************************************
376 * EasyTouch part
377 */
378
379#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
380
381#ifndef MULTI_PACKET
382#define MULTI_PACKET
383#endif
384
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
389
390static int etouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
391{
392 if ((pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT &&
393 (pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT2)
394 return 0;
395
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;
399
400 return 1;
401}
402
403static int etouch_get_pkt_len(unsigned char *buf, int len)
404{
405 switch (buf[0] & ETOUCH_PKT_TYPE_MASK) {
406 case ETOUCH_PKT_TYPE_REPT:
407 case ETOUCH_PKT_TYPE_REPT2:
408 return 5;
409
410 case ETOUCH_PKT_TYPE_DIAG:
411 if (len < 2)
412 return -1;
413
414 return buf[1] + 2;
415 }
416
417 return 0;
418}
419#endif
420
421/*****************************************************************************
422 * PanJit Part
423 */
424#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
425static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
426{
427 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
428 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
429 dev->touch = pkt[0] & 0x01;
430
431 return 1;
432}
433#endif
434
435
436/*****************************************************************************
437 * 3M/Microtouch Part
438 */
439#ifdef CONFIG_TOUCHSCREEN_USB_3M
440
441#define MTOUCHUSB_ASYNC_REPORT 1
442#define MTOUCHUSB_RESET 7
443#define MTOUCHUSB_REQ_CTRLLR_ID 10
444
445static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
446{
447 if (hwcalib_xy) {
448 dev->x = (pkt[4] << 8) | pkt[3];
449 dev->y = 0xffff - ((pkt[6] << 8) | pkt[5]);
450 } else {
451 dev->x = (pkt[8] << 8) | pkt[7];
452 dev->y = (pkt[10] << 8) | pkt[9];
453 }
454 dev->touch = (pkt[2] & 0x40) ? 1 : 0;
455
456 return 1;
457}
458
459static int mtouch_init(struct usbtouch_usb *usbtouch)
460{
461 int ret, i;
462 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
463
464 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
465 MTOUCHUSB_RESET,
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",
470 __func__, ret);
471 if (ret < 0)
472 return ret;
473 msleep(150);
474
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",
482 __func__, ret);
483 if (ret >= 0)
484 break;
485 if (ret != -EPIPE)
486 return ret;
487 }
488
489 /* Default min/max xy are the raw values, override if using hw-calib */
490 if (hwcalib_xy) {
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);
493 }
494
495 return 0;
496}
497#endif
498
499
500/*****************************************************************************
501 * ITM Part
502 */
503#ifdef CONFIG_TOUCHSCREEN_USB_ITM
504static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
505{
506 int touch;
507 /*
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.
512 */
513 dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F);
514
515 touch = ~pkt[7] & 0x20;
516 if (!touch) {
517 if (dev->touch) {
518 dev->touch = 0;
519 return 1;
520 }
521
522 return 0;
523 }
524
525 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
526 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
527 dev->touch = touch;
528
529 return 1;
530}
531#endif
532
533
534/*****************************************************************************
535 * eTurboTouch part
536 */
537#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
538#ifndef MULTI_PACKET
539#define MULTI_PACKET
540#endif
541static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
542{
543 unsigned int shift;
544
545 /* packets should start with sync */
546 if (!(pkt[0] & 0x80))
547 return 0;
548
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;
553
554 return 1;
555}
556
557static int eturbo_get_pkt_len(unsigned char *buf, int len)
558{
559 if (buf[0] & 0x80)
560 return 5;
561 if (buf[0] == 0x01)
562 return 3;
563 return 0;
564}
565#endif
566
567
568/*****************************************************************************
569 * Gunze part
570 */
571#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
572static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
573{
574 if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
575 return 0;
576
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;
580
581 return 1;
582}
583#endif
584
585/*****************************************************************************
586 * DMC TSC-10/25 Part
587 *
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
591 */
592#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
593
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
602
603/* commands */
604#define TSC10_CMD_RESET 0x55
605#define TSC10_CMD_RATE 0x05
606#define TSC10_CMD_DATA1 0x01
607
608static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
609{
610 struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
611 int ret = -ENOMEM;
612 unsigned char *buf;
613
614 buf = kmalloc(2, GFP_NOIO);
615 if (!buf)
616 goto err_nobuf;
617 /* reset */
618 buf[0] = buf[1] = 0xFF;
619 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
620 TSC10_CMD_RESET,
621 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
622 0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
623 if (ret < 0)
624 goto err_out;
625 if (buf[0] != 0x06) {
626 ret = -ENODEV;
627 goto err_out;
628 }
629
630 /* TSC-25 data sheet specifies a delay after the RESET command */
631 msleep(150);
632
633 /* set coordinate output rate */
634 buf[0] = buf[1] = 0xFF;
635 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
636 TSC10_CMD_RATE,
637 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
638 TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
639 if (ret < 0)
640 goto err_out;
641 if ((buf[0] != 0x06) && (buf[0] != 0x15 || buf[1] != 0x01)) {
642 ret = -ENODEV;
643 goto err_out;
644 }
645
646 /* start sending data */
647 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
648 TSC10_CMD_DATA1,
649 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
650 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
651err_out:
652 kfree(buf);
653err_nobuf:
654 return ret;
655}
656
657
658static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
659{
660 dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
661 dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
662 dev->touch = pkt[0] & 0x01;
663
664 return 1;
665}
666#endif
667
668
669/*****************************************************************************
670 * IRTOUCH Part
671 */
672#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
673static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
674{
675 dev->x = (pkt[3] << 8) | pkt[2];
676 dev->y = (pkt[5] << 8) | pkt[4];
677 dev->touch = (pkt[1] & 0x03) ? 1 : 0;
678
679 return 1;
680}
681#endif
682
683/*****************************************************************************
684 * ET&T TC5UH/TC4UM part
685 */
686#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
687static int tc45usb_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
688{
689 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
690 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
691 dev->touch = pkt[0] & 0x01;
692
693 return 1;
694}
695#endif
696
697/*****************************************************************************
698 * IdealTEK URTC1000 Part
699 */
700#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
701#ifndef MULTI_PACKET
702#define MULTI_PACKET
703#endif
704static int idealtek_get_pkt_len(unsigned char *buf, int len)
705{
706 if (buf[0] & 0x80)
707 return 5;
708 if (buf[0] == 0x01)
709 return len;
710 return 0;
711}
712
713static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
714{
715 switch (pkt[0] & 0x98) {
716 case 0x88:
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;
721 return 1;
722
723 case 0x98:
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;
728 return 1;
729
730 default:
731 return 0;
732 }
733}
734#endif
735
736/*****************************************************************************
737 * General Touch Part
738 */
739#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
740static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
741{
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;
746
747 return 1;
748}
749#endif
750
751/*****************************************************************************
752 * GoTop Part
753 */
754#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
755static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
756{
757 dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
758 dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
759 dev->touch = pkt[0] & 0x01;
760
761 return 1;
762}
763#endif
764
765/*****************************************************************************
766 * JASTEC Part
767 */
768#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
769static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
770{
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;
774
775 return 1;
776}
777#endif
778
779/*****************************************************************************
780 * Zytronic Part
781 */
782#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
783static int zytronic_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
784{
785 struct usb_interface *intf = dev->interface;
786
787 switch (pkt[0]) {
788 case 0x3A: /* command response */
789 dev_dbg(&intf->dev, "%s: Command response %d\n", __func__, pkt[1]);
790 break;
791
792 case 0xC0: /* down */
793 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
794 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
795 dev->touch = 1;
796 dev_dbg(&intf->dev, "%s: down %d,%d\n", __func__, dev->x, dev->y);
797 return 1;
798
799 case 0x80: /* up */
800 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
801 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
802 dev->touch = 0;
803 dev_dbg(&intf->dev, "%s: up %d,%d\n", __func__, dev->x, dev->y);
804 return 1;
805
806 default:
807 dev_dbg(&intf->dev, "%s: Unknown return %d\n", __func__, pkt[0]);
808 break;
809 }
810
811 return 0;
812}
813#endif
814
815/*****************************************************************************
816 * NEXIO Part
817 */
818#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
819
820#define NEXIO_TIMEOUT 5000
821#define NEXIO_BUFSIZE 1024
822#define NEXIO_THRESHOLD 50
823
824struct nexio_priv {
825 struct urb *ack;
826 unsigned char *ack_buf;
827};
828
829struct 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 */
834 u8 data[];
835} __attribute__ ((packed));
836
837static unsigned char nexio_ack_pkt[2] = { 0xaa, 0x02 };
838static unsigned char nexio_init_pkt[4] = { 0x82, 0x04, 0x0a, 0x0f };
839
840static void nexio_ack_complete(struct urb *urb)
841{
842}
843
844static int nexio_alloc(struct usbtouch_usb *usbtouch)
845{
846 struct nexio_priv *priv;
847 int ret = -ENOMEM;
848
849 usbtouch->priv = kmalloc(sizeof(struct nexio_priv), GFP_KERNEL);
850 if (!usbtouch->priv)
851 goto out_buf;
852
853 priv = usbtouch->priv;
854
855 priv->ack_buf = kmemdup(nexio_ack_pkt, sizeof(nexio_ack_pkt),
856 GFP_KERNEL);
857 if (!priv->ack_buf)
858 goto err_priv;
859
860 priv->ack = usb_alloc_urb(0, GFP_KERNEL);
861 if (!priv->ack) {
862 dev_dbg(&usbtouch->interface->dev,
863 "%s - usb_alloc_urb failed: usbtouch->ack\n", __func__);
864 goto err_ack_buf;
865 }
866
867 return 0;
868
869err_ack_buf:
870 kfree(priv->ack_buf);
871err_priv:
872 kfree(priv);
873out_buf:
874 return ret;
875}
876
877static int nexio_init(struct usbtouch_usb *usbtouch)
878{
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;
882 int ret = -ENOMEM;
883 int actual_len, i;
884 unsigned char *buf;
885 char *firmware_ver = NULL, *device_name = NULL;
886 int input_ep = 0, output_ep = 0;
887
888 /* find first input and output endpoint */
889 for (i = 0; i < interface->desc.bNumEndpoints; i++) {
890 if (!input_ep &&
891 usb_endpoint_dir_in(&interface->endpoint[i].desc))
892 input_ep = interface->endpoint[i].desc.bEndpointAddress;
893 if (!output_ep &&
894 usb_endpoint_dir_out(&interface->endpoint[i].desc))
895 output_ep = interface->endpoint[i].desc.bEndpointAddress;
896 }
897 if (!input_ep || !output_ep)
898 return -ENXIO;
899
900 buf = kmalloc(NEXIO_BUFSIZE, GFP_NOIO);
901 if (!buf)
902 goto out_buf;
903
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,
908 NEXIO_TIMEOUT);
909 if (ret < 0)
910 goto out_buf;
911 }
912
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,
917 NEXIO_TIMEOUT);
918 if (ret < 0)
919 goto out_buf;
920
921 /* read replies */
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,
926 NEXIO_TIMEOUT);
927 if (ret < 0 || actual_len < 1 || buf[1] != actual_len)
928 continue;
929 switch (buf[0]) {
930 case 0x83: /* firmware version */
931 if (!firmware_ver)
932 firmware_ver = kstrdup(&buf[2], GFP_NOIO);
933 break;
934 case 0x84: /* device name */
935 if (!device_name)
936 device_name = kstrdup(&buf[2], GFP_NOIO);
937 break;
938 }
939 }
940
941 printk(KERN_INFO "Nexio device: %s, firmware version: %s\n",
942 device_name, firmware_ver);
943
944 kfree(firmware_ver);
945 kfree(device_name);
946
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);
950 ret = 0;
951
952out_buf:
953 kfree(buf);
954 return ret;
955}
956
957static void nexio_exit(struct usbtouch_usb *usbtouch)
958{
959 struct nexio_priv *priv = usbtouch->priv;
960
961 usb_kill_urb(priv->ack);
962 usb_free_urb(priv->ack);
963 kfree(priv->ack_buf);
964 kfree(priv);
965}
966
967static int nexio_read_data(struct usbtouch_usb *usbtouch, unsigned char *pkt)
968{
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;
975
976 /* got touch data? */
977 if ((pkt[0] & 0xe0) != 0xe0)
978 return 0;
979
980 if (data_len > 0xff)
981 data_len -= 0x100;
982 if (x_len > 0xff)
983 x_len -= 0x80;
984
985 /* send ACK */
986 ret = usb_submit_urb(priv->ack, GFP_ATOMIC);
987
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);
995 }
996 /*
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.
1002 */
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) {
1006 begin_x = x;
1007 continue;
1008 }
1009 if (end_x == -1 && begin_x != -1 && packet->data[x] < NEXIO_THRESHOLD) {
1010 end_x = x - 1;
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;
1014 continue;
1015 }
1016 if (end_y == -1 &&
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;
1021#if 0
1022 /* multi-touch */
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);
1034#endif
1035 /* single touch */
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;
1040 return 1;
1041 }
1042 }
1043 begin_x = end_x = -1;
1044 }
1045
1046 }
1047 return 0;
1048}
1049#endif
1050
1051
1052/*****************************************************************************
1053 * ELO part
1054 */
1055
1056#ifdef CONFIG_TOUCHSCREEN_USB_ELO
1057
1058static int elo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
1059{
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];
1064
1065 return 1;
1066}
1067#endif
1068
1069
1070/*****************************************************************************
1071 * the different device descriptors
1072 */
1073#ifdef MULTI_PACKET
1074static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1075 unsigned char *pkt, int len);
1076#endif
1077
1078static struct usbtouch_device_info usbtouch_dev_info[] = {
1079#ifdef CONFIG_TOUCHSCREEN_USB_ELO
1080 [DEVTYPE_ELO] = {
1081 .min_xc = 0x0,
1082 .max_xc = 0x0fff,
1083 .min_yc = 0x0,
1084 .max_yc = 0x0fff,
1085 .max_press = 0xff,
1086 .rept_size = 8,
1087 .read_data = elo_read_data,
1088 },
1089#endif
1090
1091#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
1092 [DEVTYPE_EGALAX] = {
1093 .min_xc = 0x0,
1094 .max_xc = 0x07ff,
1095 .min_yc = 0x0,
1096 .max_yc = 0x07ff,
1097 .rept_size = 16,
1098 .process_pkt = usbtouch_process_multi,
1099 .get_pkt_len = egalax_get_pkt_len,
1100 .read_data = egalax_read_data,
1101 .init = egalax_init,
1102 },
1103#endif
1104
1105#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
1106 [DEVTYPE_PANJIT] = {
1107 .min_xc = 0x0,
1108 .max_xc = 0x0fff,
1109 .min_yc = 0x0,
1110 .max_yc = 0x0fff,
1111 .rept_size = 8,
1112 .read_data = panjit_read_data,
1113 },
1114#endif
1115
1116#ifdef CONFIG_TOUCHSCREEN_USB_3M
1117 [DEVTYPE_3M] = {
1118 .min_xc = 0x0,
1119 .max_xc = 0x4000,
1120 .min_yc = 0x0,
1121 .max_yc = 0x4000,
1122 .rept_size = 11,
1123 .read_data = mtouch_read_data,
1124 .init = mtouch_init,
1125 },
1126#endif
1127
1128#ifdef CONFIG_TOUCHSCREEN_USB_ITM
1129 [DEVTYPE_ITM] = {
1130 .min_xc = 0x0,
1131 .max_xc = 0x0fff,
1132 .min_yc = 0x0,
1133 .max_yc = 0x0fff,
1134 .max_press = 0xff,
1135 .rept_size = 8,
1136 .read_data = itm_read_data,
1137 },
1138#endif
1139
1140#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
1141 [DEVTYPE_ETURBO] = {
1142 .min_xc = 0x0,
1143 .max_xc = 0x07ff,
1144 .min_yc = 0x0,
1145 .max_yc = 0x07ff,
1146 .rept_size = 8,
1147 .process_pkt = usbtouch_process_multi,
1148 .get_pkt_len = eturbo_get_pkt_len,
1149 .read_data = eturbo_read_data,
1150 },
1151#endif
1152
1153#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
1154 [DEVTYPE_GUNZE] = {
1155 .min_xc = 0x0,
1156 .max_xc = 0x0fff,
1157 .min_yc = 0x0,
1158 .max_yc = 0x0fff,
1159 .rept_size = 4,
1160 .read_data = gunze_read_data,
1161 },
1162#endif
1163
1164#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
1165 [DEVTYPE_DMC_TSC10] = {
1166 .min_xc = 0x0,
1167 .max_xc = 0x03ff,
1168 .min_yc = 0x0,
1169 .max_yc = 0x03ff,
1170 .rept_size = 5,
1171 .init = dmc_tsc10_init,
1172 .read_data = dmc_tsc10_read_data,
1173 },
1174#endif
1175
1176#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
1177 [DEVTYPE_IRTOUCH] = {
1178 .min_xc = 0x0,
1179 .max_xc = 0x0fff,
1180 .min_yc = 0x0,
1181 .max_yc = 0x0fff,
1182 .rept_size = 8,
1183 .read_data = irtouch_read_data,
1184 },
1185
1186 [DEVTYPE_IRTOUCH_HIRES] = {
1187 .min_xc = 0x0,
1188 .max_xc = 0x7fff,
1189 .min_yc = 0x0,
1190 .max_yc = 0x7fff,
1191 .rept_size = 8,
1192 .read_data = irtouch_read_data,
1193 },
1194#endif
1195
1196#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
1197 [DEVTYPE_IDEALTEK] = {
1198 .min_xc = 0x0,
1199 .max_xc = 0x0fff,
1200 .min_yc = 0x0,
1201 .max_yc = 0x0fff,
1202 .rept_size = 8,
1203 .process_pkt = usbtouch_process_multi,
1204 .get_pkt_len = idealtek_get_pkt_len,
1205 .read_data = idealtek_read_data,
1206 },
1207#endif
1208
1209#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
1210 [DEVTYPE_GENERAL_TOUCH] = {
1211 .min_xc = 0x0,
1212 .max_xc = 0x7fff,
1213 .min_yc = 0x0,
1214 .max_yc = 0x7fff,
1215 .rept_size = 7,
1216 .read_data = general_touch_read_data,
1217 },
1218#endif
1219
1220#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
1221 [DEVTYPE_GOTOP] = {
1222 .min_xc = 0x0,
1223 .max_xc = 0x03ff,
1224 .min_yc = 0x0,
1225 .max_yc = 0x03ff,
1226 .rept_size = 4,
1227 .read_data = gotop_read_data,
1228 },
1229#endif
1230
1231#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
1232 [DEVTYPE_JASTEC] = {
1233 .min_xc = 0x0,
1234 .max_xc = 0x0fff,
1235 .min_yc = 0x0,
1236 .max_yc = 0x0fff,
1237 .rept_size = 4,
1238 .read_data = jastec_read_data,
1239 },
1240#endif
1241
1242#ifdef CONFIG_TOUCHSCREEN_USB_E2I
1243 [DEVTYPE_E2I] = {
1244 .min_xc = 0x0,
1245 .max_xc = 0x7fff,
1246 .min_yc = 0x0,
1247 .max_yc = 0x7fff,
1248 .rept_size = 6,
1249 .init = e2i_init,
1250 .read_data = e2i_read_data,
1251 },
1252#endif
1253
1254#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
1255 [DEVTYPE_ZYTRONIC] = {
1256 .min_xc = 0x0,
1257 .max_xc = 0x03ff,
1258 .min_yc = 0x0,
1259 .max_yc = 0x03ff,
1260 .rept_size = 5,
1261 .read_data = zytronic_read_data,
1262 .irq_always = true,
1263 },
1264#endif
1265
1266#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
1267 [DEVTYPE_TC45USB] = {
1268 .min_xc = 0x0,
1269 .max_xc = 0x0fff,
1270 .min_yc = 0x0,
1271 .max_yc = 0x0fff,
1272 .rept_size = 5,
1273 .read_data = tc45usb_read_data,
1274 },
1275#endif
1276
1277#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
1278 [DEVTYPE_NEXIO] = {
1279 .rept_size = 1024,
1280 .irq_always = true,
1281 .read_data = nexio_read_data,
1282 .alloc = nexio_alloc,
1283 .init = nexio_init,
1284 .exit = nexio_exit,
1285 },
1286#endif
1287#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
1288 [DEVTYPE_ETOUCH] = {
1289 .min_xc = 0x0,
1290 .max_xc = 0x07ff,
1291 .min_yc = 0x0,
1292 .max_yc = 0x07ff,
1293 .rept_size = 16,
1294 .process_pkt = usbtouch_process_multi,
1295 .get_pkt_len = etouch_get_pkt_len,
1296 .read_data = etouch_read_data,
1297 },
1298#endif
1299};
1300
1301
1302/*****************************************************************************
1303 * Generic Part
1304 */
1305static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
1306 unsigned char *pkt, int len)
1307{
1308 struct usbtouch_device_info *type = usbtouch->type;
1309
1310 if (!type->read_data(usbtouch, pkt))
1311 return;
1312
1313 input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
1314
1315 if (swap_xy) {
1316 input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
1317 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
1318 } else {
1319 input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
1320 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
1321 }
1322 if (type->max_press)
1323 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
1324 input_sync(usbtouch->input);
1325}
1326
1327
1328#ifdef MULTI_PACKET
1329static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1330 unsigned char *pkt, int len)
1331{
1332 unsigned char *buffer;
1333 int pkt_len, pos, buf_len, tmp;
1334
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);
1340
1341 /* drop? */
1342 if (unlikely(!pkt_len))
1343 goto out_flush_buf;
1344
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))
1349 append = len;
1350 if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
1351 goto out_flush_buf;
1352 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
1353 usbtouch->buf_len += append;
1354
1355 pkt_len = usbtouch->type->get_pkt_len(
1356 usbtouch->buffer, usbtouch->buf_len);
1357 if (pkt_len < 0)
1358 return;
1359 }
1360
1361 /* append */
1362 tmp = pkt_len - usbtouch->buf_len;
1363 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
1364 goto out_flush_buf;
1365 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
1366 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
1367
1368 buffer = pkt + tmp;
1369 buf_len = len - tmp;
1370 } else {
1371 buffer = pkt;
1372 buf_len = len;
1373 }
1374
1375 /* loop over the received packet, process */
1376 pos = 0;
1377 while (pos < buf_len) {
1378 /* get packet len */
1379 pkt_len = usbtouch->type->get_pkt_len(buffer + pos,
1380 buf_len - pos);
1381
1382 /* unknown packet: skip one byte */
1383 if (unlikely(!pkt_len)) {
1384 pos++;
1385 continue;
1386 }
1387
1388 /* full packet: process */
1389 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
1390 usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
1391 } else {
1392 /* incomplete packet: save in buffer */
1393 memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
1394 usbtouch->buf_len = buf_len - pos;
1395 return;
1396 }
1397 pos += pkt_len;
1398 }
1399
1400out_flush_buf:
1401 usbtouch->buf_len = 0;
1402 return;
1403}
1404#endif
1405
1406
1407static void usbtouch_irq(struct urb *urb)
1408{
1409 struct usbtouch_usb *usbtouch = urb->context;
1410 struct device *dev = &usbtouch->interface->dev;
1411 int retval;
1412
1413 switch (urb->status) {
1414 case 0:
1415 /* success */
1416 break;
1417 case -ETIME:
1418 /* this urb is timing out */
1419 dev_dbg(dev,
1420 "%s - urb timed out - was the device unplugged?\n",
1421 __func__);
1422 return;
1423 case -ECONNRESET:
1424 case -ENOENT:
1425 case -ESHUTDOWN:
1426 case -EPIPE:
1427 /* this urb is terminated, clean up */
1428 dev_dbg(dev, "%s - urb shutting down with status: %d\n",
1429 __func__, urb->status);
1430 return;
1431 default:
1432 dev_dbg(dev, "%s - nonzero urb status received: %d\n",
1433 __func__, urb->status);
1434 goto exit;
1435 }
1436
1437 usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
1438
1439exit:
1440 usb_mark_last_busy(interface_to_usbdev(usbtouch->interface));
1441 retval = usb_submit_urb(urb, GFP_ATOMIC);
1442 if (retval)
1443 dev_err(dev, "%s - usb_submit_urb failed with result: %d\n",
1444 __func__, retval);
1445}
1446
1447static int usbtouch_open(struct input_dev *input)
1448{
1449 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1450 int r;
1451
1452 usbtouch->irq->dev = interface_to_usbdev(usbtouch->interface);
1453
1454 r = usb_autopm_get_interface(usbtouch->interface) ? -EIO : 0;
1455 if (r < 0)
1456 goto out;
1457
1458 if (!usbtouch->type->irq_always) {
1459 if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) {
1460 r = -EIO;
1461 goto out_put;
1462 }
1463 }
1464
1465 usbtouch->interface->needs_remote_wakeup = 1;
1466out_put:
1467 usb_autopm_put_interface(usbtouch->interface);
1468out:
1469 return r;
1470}
1471
1472static void usbtouch_close(struct input_dev *input)
1473{
1474 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1475 int r;
1476
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;
1481 if (!r)
1482 usb_autopm_put_interface(usbtouch->interface);
1483}
1484
1485static int usbtouch_suspend
1486(struct usb_interface *intf, pm_message_t message)
1487{
1488 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1489
1490 usb_kill_urb(usbtouch->irq);
1491
1492 return 0;
1493}
1494
1495static int usbtouch_resume(struct usb_interface *intf)
1496{
1497 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1498 struct input_dev *input = usbtouch->input;
1499 int result = 0;
1500
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);
1505
1506 return result;
1507}
1508
1509static int usbtouch_reset_resume(struct usb_interface *intf)
1510{
1511 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1512 struct input_dev *input = usbtouch->input;
1513 int err = 0;
1514
1515 /* reinit the device */
1516 if (usbtouch->type->init) {
1517 err = usbtouch->type->init(usbtouch);
1518 if (err) {
1519 dev_dbg(&intf->dev,
1520 "%s - type->init() failed, err: %d\n",
1521 __func__, err);
1522 return err;
1523 }
1524 }
1525
1526 /* restart IO if needed */
1527 mutex_lock(&input->mutex);
1528 if (input->users)
1529 err = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1530 mutex_unlock(&input->mutex);
1531
1532 return err;
1533}
1534
1535static void usbtouch_free_buffers(struct usb_device *udev,
1536 struct usbtouch_usb *usbtouch)
1537{
1538 usb_free_coherent(udev, usbtouch->data_size,
1539 usbtouch->data, usbtouch->data_dma);
1540 kfree(usbtouch->buffer);
1541}
1542
1543static struct usb_endpoint_descriptor *
1544usbtouch_get_input_endpoint(struct usb_host_interface *interface)
1545{
1546 int i;
1547
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;
1551
1552 return NULL;
1553}
1554
1555static int usbtouch_probe(struct usb_interface *intf,
1556 const struct usb_device_id *id)
1557{
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;
1563 int err = -ENOMEM;
1564
1565 /* some devices are ignored */
1566 if (id->driver_info == DEVTYPE_IGNORE)
1567 return -ENODEV;
1568
1569 endpoint = usbtouch_get_input_endpoint(intf->cur_altsetting);
1570 if (!endpoint)
1571 return -ENXIO;
1572
1573 usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
1574 input_dev = input_allocate_device();
1575 if (!usbtouch || !input_dev)
1576 goto out_free;
1577
1578 type = &usbtouch_dev_info[id->driver_info];
1579 usbtouch->type = type;
1580 if (!type->process_pkt)
1581 type->process_pkt = usbtouch_process_pkt;
1582
1583 usbtouch->data_size = type->rept_size;
1584 if (type->get_pkt_len) {
1585 /*
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
1590 * nothing else.
1591 */
1592 usbtouch->data_size = min(usbtouch->data_size,
1593 usb_endpoint_maxp(endpoint));
1594 }
1595
1596 usbtouch->data = usb_alloc_coherent(udev, usbtouch->data_size,
1597 GFP_KERNEL, &usbtouch->data_dma);
1598 if (!usbtouch->data)
1599 goto out_free;
1600
1601 if (type->get_pkt_len) {
1602 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
1603 if (!usbtouch->buffer)
1604 goto out_free_buffers;
1605 }
1606
1607 usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
1608 if (!usbtouch->irq) {
1609 dev_dbg(&intf->dev,
1610 "%s - usb_alloc_urb failed: usbtouch->irq\n", __func__);
1611 goto out_free_buffers;
1612 }
1613
1614 usbtouch->interface = intf;
1615 usbtouch->input = input_dev;
1616
1617 if (udev->manufacturer)
1618 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
1619
1620 if (udev->product) {
1621 if (udev->manufacturer)
1622 strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
1623 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
1624 }
1625
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));
1631
1632 usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
1633 strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
1634
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;
1639
1640 input_set_drvdata(input_dev, usbtouch);
1641
1642 input_dev->open = usbtouch_open;
1643 input_dev->close = usbtouch_close;
1644
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);
1652
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);
1658 else
1659 usb_fill_bulk_urb(usbtouch->irq, udev,
1660 usb_rcvbulkpipe(udev, endpoint->bEndpointAddress),
1661 usbtouch->data, usbtouch->data_size,
1662 usbtouch_irq, usbtouch);
1663
1664 usbtouch->irq->dev = udev;
1665 usbtouch->irq->transfer_dma = usbtouch->data_dma;
1666 usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1667
1668 /* device specific allocations */
1669 if (type->alloc) {
1670 err = type->alloc(usbtouch);
1671 if (err) {
1672 dev_dbg(&intf->dev,
1673 "%s - type->alloc() failed, err: %d\n",
1674 __func__, err);
1675 goto out_free_urb;
1676 }
1677 }
1678
1679 /* device specific initialisation*/
1680 if (type->init) {
1681 err = type->init(usbtouch);
1682 if (err) {
1683 dev_dbg(&intf->dev,
1684 "%s - type->init() failed, err: %d\n",
1685 __func__, err);
1686 goto out_do_exit;
1687 }
1688 }
1689
1690 err = input_register_device(usbtouch->input);
1691 if (err) {
1692 dev_dbg(&intf->dev,
1693 "%s - input_register_device failed, err: %d\n",
1694 __func__, err);
1695 goto out_do_exit;
1696 }
1697
1698 usb_set_intfdata(intf, usbtouch);
1699
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);
1704 if (err) {
1705 usb_autopm_put_interface(intf);
1706 dev_err(&intf->dev,
1707 "%s - usb_submit_urb failed with result: %d\n",
1708 __func__, err);
1709 goto out_unregister_input;
1710 }
1711 }
1712
1713 return 0;
1714
1715out_unregister_input:
1716 input_unregister_device(input_dev);
1717 input_dev = NULL;
1718out_do_exit:
1719 if (type->exit)
1720 type->exit(usbtouch);
1721out_free_urb:
1722 usb_free_urb(usbtouch->irq);
1723out_free_buffers:
1724 usbtouch_free_buffers(udev, usbtouch);
1725out_free:
1726 input_free_device(input_dev);
1727 kfree(usbtouch);
1728 return err;
1729}
1730
1731static void usbtouch_disconnect(struct usb_interface *intf)
1732{
1733 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1734
1735 if (!usbtouch)
1736 return;
1737
1738 dev_dbg(&intf->dev,
1739 "%s - usbtouch is initialized, cleaning up\n", __func__);
1740
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);
1748 kfree(usbtouch);
1749}
1750
1751MODULE_DEVICE_TABLE(usb, usbtouch_devices);
1752
1753static 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,
1762};
1763
1764module_usb_driver(usbtouch_driver);
1765
1766MODULE_AUTHOR(DRIVER_AUTHOR);
1767MODULE_DESCRIPTION(DRIVER_DESC);
1768MODULE_LICENSE("GPL");
1769
1770MODULE_ALIAS("touchkitusb");
1771MODULE_ALIAS("itmtouch");
1772MODULE_ALIAS("mtouchusb");
1/******************************************************************************
2 * usbtouchscreen.c
3 * Driver for USB Touchscreens, supporting those devices:
4 * - eGalax Touchkit
5 * includes eTurboTouch CT-410/510/700
6 * - 3M/Microtouch EX II series
7 * - ITM
8 * - PanJit TouchSet
9 * - eTurboTouch
10 * - Gunze AHL61
11 * - DMC TSC-10/25
12 * - IRTOUCHSYSTEMS/UNITOP
13 * - IdealTEK URTC1000
14 * - General Touch
15 * - GoTop Super_Q2/GogoPen/PenPower tablets
16 * - JASTEC USB touch controller/DigiTech DTR-02U
17 * - Zytronic capacitive touchscreen
18 * - NEXIO/iNexio
19 * - Elo TouchSystems 2700 IntelliTouch
20 * - EasyTouch USB Dual/Multi touch controller from Data Modul
21 *
22 * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
23 * Copyright (C) by Todd E. Johnson (mtouchusb.c)
24 *
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.
29 *
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.
34 *
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.
38 *
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
45 *
46 *****************************************************************************/
47
48//#define DEBUG
49
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>
57#include <linux/mutex.h>
58
59static bool swap_xy;
60module_param(swap_xy, bool, 0644);
61MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
62
63static bool hwcalib_xy;
64module_param(hwcalib_xy, bool, 0644);
65MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available");
66
67/* device specifc data/functions */
68struct usbtouch_usb;
69struct usbtouch_device_info {
70 int min_xc, max_xc;
71 int min_yc, max_yc;
72 int min_press, max_press;
73 int rept_size;
74
75 /*
76 * Always service the USB devices irq not just when the input device is
77 * open. This is useful when devices have a watchdog which prevents us
78 * from periodically polling the device. Leave this unset unless your
79 * touchscreen device requires it, as it does consume more of the USB
80 * bandwidth.
81 */
82 bool irq_always;
83
84 void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
85
86 /*
87 * used to get the packet len. possible return values:
88 * > 0: packet len
89 * = 0: skip one byte
90 * < 0: -return value more bytes needed
91 */
92 int (*get_pkt_len) (unsigned char *pkt, int len);
93
94 int (*read_data) (struct usbtouch_usb *usbtouch, unsigned char *pkt);
95 int (*alloc) (struct usbtouch_usb *usbtouch);
96 int (*init) (struct usbtouch_usb *usbtouch);
97 void (*exit) (struct usbtouch_usb *usbtouch);
98};
99
100/* a usbtouch device */
101struct usbtouch_usb {
102 unsigned char *data;
103 dma_addr_t data_dma;
104 int data_size;
105 unsigned char *buffer;
106 int buf_len;
107 struct urb *irq;
108 struct usb_interface *interface;
109 struct input_dev *input;
110 struct usbtouch_device_info *type;
111 struct mutex pm_mutex; /* serialize access to open/suspend */
112 bool is_open;
113 char name[128];
114 char phys[64];
115 void *priv;
116
117 int x, y;
118 int touch, press;
119};
120
121
122/* device types */
123enum {
124 DEVTYPE_IGNORE = -1,
125 DEVTYPE_EGALAX,
126 DEVTYPE_PANJIT,
127 DEVTYPE_3M,
128 DEVTYPE_ITM,
129 DEVTYPE_ETURBO,
130 DEVTYPE_GUNZE,
131 DEVTYPE_DMC_TSC10,
132 DEVTYPE_IRTOUCH,
133 DEVTYPE_IRTOUCH_HIRES,
134 DEVTYPE_IDEALTEK,
135 DEVTYPE_GENERAL_TOUCH,
136 DEVTYPE_GOTOP,
137 DEVTYPE_JASTEC,
138 DEVTYPE_E2I,
139 DEVTYPE_ZYTRONIC,
140 DEVTYPE_TC45USB,
141 DEVTYPE_NEXIO,
142 DEVTYPE_ELO,
143 DEVTYPE_ETOUCH,
144};
145
146#define USB_DEVICE_HID_CLASS(vend, prod) \
147 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
148 | USB_DEVICE_ID_MATCH_DEVICE, \
149 .idVendor = (vend), \
150 .idProduct = (prod), \
151 .bInterfaceClass = USB_INTERFACE_CLASS_HID
152
153static const struct usb_device_id usbtouch_devices[] = {
154#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
155 /* ignore the HID capable devices, handled by usbhid */
156 {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE},
157 {USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE},
158
159 /* normal device IDs */
160 {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
161 {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
162 {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
163 {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
164 {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
165 {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
166 {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
167#endif
168
169#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
170 {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
171 {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
172 {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
173 {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
174#endif
175
176#ifdef CONFIG_TOUCHSCREEN_USB_3M
177 {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
178#endif
179
180#ifdef CONFIG_TOUCHSCREEN_USB_ITM
181 {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
182 {USB_DEVICE(0x16e3, 0xf9e9), .driver_info = DEVTYPE_ITM},
183#endif
184
185#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
186 {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
187#endif
188
189#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
190 {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
191#endif
192
193#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
194 {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
195#endif
196
197#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
198 {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
199 {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
200 {USB_DEVICE(0x6615, 0x0012), .driver_info = DEVTYPE_IRTOUCH_HIRES},
201#endif
202
203#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
204 {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
205#endif
206
207#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
208 {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
209#endif
210
211#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
212 {USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP},
213 {USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP},
214 {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
215#endif
216
217#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
218 {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
219#endif
220
221#ifdef CONFIG_TOUCHSCREEN_USB_E2I
222 {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
223#endif
224
225#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
226 {USB_DEVICE(0x14c8, 0x0003), .driver_info = DEVTYPE_ZYTRONIC},
227#endif
228
229#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
230 /* TC5UH */
231 {USB_DEVICE(0x0664, 0x0309), .driver_info = DEVTYPE_TC45USB},
232 /* TC4UM */
233 {USB_DEVICE(0x0664, 0x0306), .driver_info = DEVTYPE_TC45USB},
234#endif
235
236#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
237 /* data interface only */
238 {USB_DEVICE_AND_INTERFACE_INFO(0x10f0, 0x2002, 0x0a, 0x00, 0x00),
239 .driver_info = DEVTYPE_NEXIO},
240 {USB_DEVICE_AND_INTERFACE_INFO(0x1870, 0x0001, 0x0a, 0x00, 0x00),
241 .driver_info = DEVTYPE_NEXIO},
242#endif
243
244#ifdef CONFIG_TOUCHSCREEN_USB_ELO
245 {USB_DEVICE(0x04e7, 0x0020), .driver_info = DEVTYPE_ELO},
246#endif
247
248#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
249 {USB_DEVICE(0x7374, 0x0001), .driver_info = DEVTYPE_ETOUCH},
250#endif
251
252 {}
253};
254
255
256/*****************************************************************************
257 * e2i Part
258 */
259
260#ifdef CONFIG_TOUCHSCREEN_USB_E2I
261static int e2i_init(struct usbtouch_usb *usbtouch)
262{
263 int ret;
264 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
265
266 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
267 0x01, 0x02, 0x0000, 0x0081,
268 NULL, 0, USB_CTRL_SET_TIMEOUT);
269
270 dev_dbg(&usbtouch->interface->dev,
271 "%s - usb_control_msg - E2I_RESET - bytes|err: %d\n",
272 __func__, ret);
273 return ret;
274}
275
276static int e2i_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
277{
278 int tmp = (pkt[0] << 8) | pkt[1];
279 dev->x = (pkt[2] << 8) | pkt[3];
280 dev->y = (pkt[4] << 8) | pkt[5];
281
282 tmp = tmp - 0xA000;
283 dev->touch = (tmp > 0);
284 dev->press = (tmp > 0 ? tmp : 0);
285
286 return 1;
287}
288#endif
289
290
291/*****************************************************************************
292 * eGalax part
293 */
294
295#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
296
297#ifndef MULTI_PACKET
298#define MULTI_PACKET
299#endif
300
301#define EGALAX_PKT_TYPE_MASK 0xFE
302#define EGALAX_PKT_TYPE_REPT 0x80
303#define EGALAX_PKT_TYPE_DIAG 0x0A
304
305static int egalax_init(struct usbtouch_usb *usbtouch)
306{
307 int ret, i;
308 unsigned char *buf;
309 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
310
311 /*
312 * An eGalax diagnostic packet kicks the device into using the right
313 * protocol. We send a "check active" packet. The response will be
314 * read later and ignored.
315 */
316
317 buf = kmalloc(3, GFP_KERNEL);
318 if (!buf)
319 return -ENOMEM;
320
321 buf[0] = EGALAX_PKT_TYPE_DIAG;
322 buf[1] = 1; /* length */
323 buf[2] = 'A'; /* command - check active */
324
325 for (i = 0; i < 3; i++) {
326 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
327 0,
328 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
329 0, 0, buf, 3,
330 USB_CTRL_SET_TIMEOUT);
331 if (ret >= 0) {
332 ret = 0;
333 break;
334 }
335 if (ret != -EPIPE)
336 break;
337 }
338
339 kfree(buf);
340
341 return ret;
342}
343
344static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
345{
346 if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT)
347 return 0;
348
349 dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F);
350 dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F);
351 dev->touch = pkt[0] & 0x01;
352
353 return 1;
354}
355
356static int egalax_get_pkt_len(unsigned char *buf, int len)
357{
358 switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
359 case EGALAX_PKT_TYPE_REPT:
360 return 5;
361
362 case EGALAX_PKT_TYPE_DIAG:
363 if (len < 2)
364 return -1;
365
366 return buf[1] + 2;
367 }
368
369 return 0;
370}
371#endif
372
373/*****************************************************************************
374 * EasyTouch part
375 */
376
377#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
378
379#ifndef MULTI_PACKET
380#define MULTI_PACKET
381#endif
382
383#define ETOUCH_PKT_TYPE_MASK 0xFE
384#define ETOUCH_PKT_TYPE_REPT 0x80
385#define ETOUCH_PKT_TYPE_REPT2 0xB0
386#define ETOUCH_PKT_TYPE_DIAG 0x0A
387
388static int etouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
389{
390 if ((pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT &&
391 (pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT2)
392 return 0;
393
394 dev->x = ((pkt[1] & 0x1F) << 7) | (pkt[2] & 0x7F);
395 dev->y = ((pkt[3] & 0x1F) << 7) | (pkt[4] & 0x7F);
396 dev->touch = pkt[0] & 0x01;
397
398 return 1;
399}
400
401static int etouch_get_pkt_len(unsigned char *buf, int len)
402{
403 switch (buf[0] & ETOUCH_PKT_TYPE_MASK) {
404 case ETOUCH_PKT_TYPE_REPT:
405 case ETOUCH_PKT_TYPE_REPT2:
406 return 5;
407
408 case ETOUCH_PKT_TYPE_DIAG:
409 if (len < 2)
410 return -1;
411
412 return buf[1] + 2;
413 }
414
415 return 0;
416}
417#endif
418
419/*****************************************************************************
420 * PanJit Part
421 */
422#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
423static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
424{
425 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
426 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
427 dev->touch = pkt[0] & 0x01;
428
429 return 1;
430}
431#endif
432
433
434/*****************************************************************************
435 * 3M/Microtouch Part
436 */
437#ifdef CONFIG_TOUCHSCREEN_USB_3M
438
439#define MTOUCHUSB_ASYNC_REPORT 1
440#define MTOUCHUSB_RESET 7
441#define MTOUCHUSB_REQ_CTRLLR_ID 10
442
443static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
444{
445 if (hwcalib_xy) {
446 dev->x = (pkt[4] << 8) | pkt[3];
447 dev->y = 0xffff - ((pkt[6] << 8) | pkt[5]);
448 } else {
449 dev->x = (pkt[8] << 8) | pkt[7];
450 dev->y = (pkt[10] << 8) | pkt[9];
451 }
452 dev->touch = (pkt[2] & 0x40) ? 1 : 0;
453
454 return 1;
455}
456
457static int mtouch_init(struct usbtouch_usb *usbtouch)
458{
459 int ret, i;
460 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
461
462 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
463 MTOUCHUSB_RESET,
464 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
465 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
466 dev_dbg(&usbtouch->interface->dev,
467 "%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d\n",
468 __func__, ret);
469 if (ret < 0)
470 return ret;
471 msleep(150);
472
473 for (i = 0; i < 3; i++) {
474 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
475 MTOUCHUSB_ASYNC_REPORT,
476 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
477 1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
478 dev_dbg(&usbtouch->interface->dev,
479 "%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d\n",
480 __func__, ret);
481 if (ret >= 0)
482 break;
483 if (ret != -EPIPE)
484 return ret;
485 }
486
487 /* Default min/max xy are the raw values, override if using hw-calib */
488 if (hwcalib_xy) {
489 input_set_abs_params(usbtouch->input, ABS_X, 0, 0xffff, 0, 0);
490 input_set_abs_params(usbtouch->input, ABS_Y, 0, 0xffff, 0, 0);
491 }
492
493 return 0;
494}
495#endif
496
497
498/*****************************************************************************
499 * ITM Part
500 */
501#ifdef CONFIG_TOUCHSCREEN_USB_ITM
502static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
503{
504 int touch;
505 /*
506 * ITM devices report invalid x/y data if not touched.
507 * if the screen was touched before but is not touched any more
508 * report touch as 0 with the last valid x/y data once. then stop
509 * reporting data until touched again.
510 */
511 dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F);
512
513 touch = ~pkt[7] & 0x20;
514 if (!touch) {
515 if (dev->touch) {
516 dev->touch = 0;
517 return 1;
518 }
519
520 return 0;
521 }
522
523 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
524 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
525 dev->touch = touch;
526
527 return 1;
528}
529#endif
530
531
532/*****************************************************************************
533 * eTurboTouch part
534 */
535#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
536#ifndef MULTI_PACKET
537#define MULTI_PACKET
538#endif
539static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
540{
541 unsigned int shift;
542
543 /* packets should start with sync */
544 if (!(pkt[0] & 0x80))
545 return 0;
546
547 shift = (6 - (pkt[0] & 0x03));
548 dev->x = ((pkt[3] << 7) | pkt[4]) >> shift;
549 dev->y = ((pkt[1] << 7) | pkt[2]) >> shift;
550 dev->touch = (pkt[0] & 0x10) ? 1 : 0;
551
552 return 1;
553}
554
555static int eturbo_get_pkt_len(unsigned char *buf, int len)
556{
557 if (buf[0] & 0x80)
558 return 5;
559 if (buf[0] == 0x01)
560 return 3;
561 return 0;
562}
563#endif
564
565
566/*****************************************************************************
567 * Gunze part
568 */
569#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
570static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
571{
572 if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
573 return 0;
574
575 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F);
576 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F);
577 dev->touch = pkt[0] & 0x20;
578
579 return 1;
580}
581#endif
582
583/*****************************************************************************
584 * DMC TSC-10/25 Part
585 *
586 * Documentation about the controller and it's protocol can be found at
587 * http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf
588 * http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf
589 */
590#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
591
592/* supported data rates. currently using 130 */
593#define TSC10_RATE_POINT 0x50
594#define TSC10_RATE_30 0x40
595#define TSC10_RATE_50 0x41
596#define TSC10_RATE_80 0x42
597#define TSC10_RATE_100 0x43
598#define TSC10_RATE_130 0x44
599#define TSC10_RATE_150 0x45
600
601/* commands */
602#define TSC10_CMD_RESET 0x55
603#define TSC10_CMD_RATE 0x05
604#define TSC10_CMD_DATA1 0x01
605
606static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
607{
608 struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
609 int ret = -ENOMEM;
610 unsigned char *buf;
611
612 buf = kmalloc(2, GFP_NOIO);
613 if (!buf)
614 goto err_nobuf;
615 /* reset */
616 buf[0] = buf[1] = 0xFF;
617 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
618 TSC10_CMD_RESET,
619 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
620 0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
621 if (ret < 0)
622 goto err_out;
623 if (buf[0] != 0x06) {
624 ret = -ENODEV;
625 goto err_out;
626 }
627
628 /* TSC-25 data sheet specifies a delay after the RESET command */
629 msleep(150);
630
631 /* set coordinate output rate */
632 buf[0] = buf[1] = 0xFF;
633 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
634 TSC10_CMD_RATE,
635 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
636 TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
637 if (ret < 0)
638 goto err_out;
639 if ((buf[0] != 0x06) && (buf[0] != 0x15 || buf[1] != 0x01)) {
640 ret = -ENODEV;
641 goto err_out;
642 }
643
644 /* start sending data */
645 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
646 TSC10_CMD_DATA1,
647 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
648 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
649err_out:
650 kfree(buf);
651err_nobuf:
652 return ret;
653}
654
655
656static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
657{
658 dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
659 dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
660 dev->touch = pkt[0] & 0x01;
661
662 return 1;
663}
664#endif
665
666
667/*****************************************************************************
668 * IRTOUCH Part
669 */
670#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
671static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
672{
673 dev->x = (pkt[3] << 8) | pkt[2];
674 dev->y = (pkt[5] << 8) | pkt[4];
675 dev->touch = (pkt[1] & 0x03) ? 1 : 0;
676
677 return 1;
678}
679#endif
680
681/*****************************************************************************
682 * ET&T TC5UH/TC4UM part
683 */
684#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
685static int tc45usb_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
686{
687 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
688 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
689 dev->touch = pkt[0] & 0x01;
690
691 return 1;
692}
693#endif
694
695/*****************************************************************************
696 * IdealTEK URTC1000 Part
697 */
698#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
699#ifndef MULTI_PACKET
700#define MULTI_PACKET
701#endif
702static int idealtek_get_pkt_len(unsigned char *buf, int len)
703{
704 if (buf[0] & 0x80)
705 return 5;
706 if (buf[0] == 0x01)
707 return len;
708 return 0;
709}
710
711static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
712{
713 switch (pkt[0] & 0x98) {
714 case 0x88:
715 /* touch data in IdealTEK mode */
716 dev->x = (pkt[1] << 5) | (pkt[2] >> 2);
717 dev->y = (pkt[3] << 5) | (pkt[4] >> 2);
718 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
719 return 1;
720
721 case 0x98:
722 /* touch data in MT emulation mode */
723 dev->x = (pkt[2] << 5) | (pkt[1] >> 2);
724 dev->y = (pkt[4] << 5) | (pkt[3] >> 2);
725 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
726 return 1;
727
728 default:
729 return 0;
730 }
731}
732#endif
733
734/*****************************************************************************
735 * General Touch Part
736 */
737#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
738static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
739{
740 dev->x = (pkt[2] << 8) | pkt[1];
741 dev->y = (pkt[4] << 8) | pkt[3];
742 dev->press = pkt[5] & 0xff;
743 dev->touch = pkt[0] & 0x01;
744
745 return 1;
746}
747#endif
748
749/*****************************************************************************
750 * GoTop Part
751 */
752#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
753static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
754{
755 dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
756 dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
757 dev->touch = pkt[0] & 0x01;
758
759 return 1;
760}
761#endif
762
763/*****************************************************************************
764 * JASTEC Part
765 */
766#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
767static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
768{
769 dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f);
770 dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f);
771 dev->touch = (pkt[0] & 0x40) >> 6;
772
773 return 1;
774}
775#endif
776
777/*****************************************************************************
778 * Zytronic Part
779 */
780#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
781static int zytronic_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
782{
783 struct usb_interface *intf = dev->interface;
784
785 switch (pkt[0]) {
786 case 0x3A: /* command response */
787 dev_dbg(&intf->dev, "%s: Command response %d\n", __func__, pkt[1]);
788 break;
789
790 case 0xC0: /* down */
791 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
792 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
793 dev->touch = 1;
794 dev_dbg(&intf->dev, "%s: down %d,%d\n", __func__, dev->x, dev->y);
795 return 1;
796
797 case 0x80: /* up */
798 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
799 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
800 dev->touch = 0;
801 dev_dbg(&intf->dev, "%s: up %d,%d\n", __func__, dev->x, dev->y);
802 return 1;
803
804 default:
805 dev_dbg(&intf->dev, "%s: Unknown return %d\n", __func__, pkt[0]);
806 break;
807 }
808
809 return 0;
810}
811#endif
812
813/*****************************************************************************
814 * NEXIO Part
815 */
816#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
817
818#define NEXIO_TIMEOUT 5000
819#define NEXIO_BUFSIZE 1024
820#define NEXIO_THRESHOLD 50
821
822struct nexio_priv {
823 struct urb *ack;
824 unsigned char *ack_buf;
825};
826
827struct nexio_touch_packet {
828 u8 flags; /* 0xe1 = touch, 0xe1 = release */
829 __be16 data_len; /* total bytes of touch data */
830 __be16 x_len; /* bytes for X axis */
831 __be16 y_len; /* bytes for Y axis */
832 u8 data[];
833} __attribute__ ((packed));
834
835static unsigned char nexio_ack_pkt[2] = { 0xaa, 0x02 };
836static unsigned char nexio_init_pkt[4] = { 0x82, 0x04, 0x0a, 0x0f };
837
838static void nexio_ack_complete(struct urb *urb)
839{
840}
841
842static int nexio_alloc(struct usbtouch_usb *usbtouch)
843{
844 struct nexio_priv *priv;
845 int ret = -ENOMEM;
846
847 usbtouch->priv = kmalloc(sizeof(struct nexio_priv), GFP_KERNEL);
848 if (!usbtouch->priv)
849 goto out_buf;
850
851 priv = usbtouch->priv;
852
853 priv->ack_buf = kmemdup(nexio_ack_pkt, sizeof(nexio_ack_pkt),
854 GFP_KERNEL);
855 if (!priv->ack_buf)
856 goto err_priv;
857
858 priv->ack = usb_alloc_urb(0, GFP_KERNEL);
859 if (!priv->ack) {
860 dev_dbg(&usbtouch->interface->dev,
861 "%s - usb_alloc_urb failed: usbtouch->ack\n", __func__);
862 goto err_ack_buf;
863 }
864
865 return 0;
866
867err_ack_buf:
868 kfree(priv->ack_buf);
869err_priv:
870 kfree(priv);
871out_buf:
872 return ret;
873}
874
875static int nexio_init(struct usbtouch_usb *usbtouch)
876{
877 struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
878 struct usb_host_interface *interface = usbtouch->interface->cur_altsetting;
879 struct nexio_priv *priv = usbtouch->priv;
880 int ret = -ENOMEM;
881 int actual_len, i;
882 unsigned char *buf;
883 char *firmware_ver = NULL, *device_name = NULL;
884 int input_ep = 0, output_ep = 0;
885
886 /* find first input and output endpoint */
887 for (i = 0; i < interface->desc.bNumEndpoints; i++) {
888 if (!input_ep &&
889 usb_endpoint_dir_in(&interface->endpoint[i].desc))
890 input_ep = interface->endpoint[i].desc.bEndpointAddress;
891 if (!output_ep &&
892 usb_endpoint_dir_out(&interface->endpoint[i].desc))
893 output_ep = interface->endpoint[i].desc.bEndpointAddress;
894 }
895 if (!input_ep || !output_ep)
896 return -ENXIO;
897
898 buf = kmalloc(NEXIO_BUFSIZE, GFP_NOIO);
899 if (!buf)
900 goto out_buf;
901
902 /* two empty reads */
903 for (i = 0; i < 2; i++) {
904 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
905 buf, NEXIO_BUFSIZE, &actual_len,
906 NEXIO_TIMEOUT);
907 if (ret < 0)
908 goto out_buf;
909 }
910
911 /* send init command */
912 memcpy(buf, nexio_init_pkt, sizeof(nexio_init_pkt));
913 ret = usb_bulk_msg(dev, usb_sndbulkpipe(dev, output_ep),
914 buf, sizeof(nexio_init_pkt), &actual_len,
915 NEXIO_TIMEOUT);
916 if (ret < 0)
917 goto out_buf;
918
919 /* read replies */
920 for (i = 0; i < 3; i++) {
921 memset(buf, 0, NEXIO_BUFSIZE);
922 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
923 buf, NEXIO_BUFSIZE, &actual_len,
924 NEXIO_TIMEOUT);
925 if (ret < 0 || actual_len < 1 || buf[1] != actual_len)
926 continue;
927 switch (buf[0]) {
928 case 0x83: /* firmware version */
929 if (!firmware_ver)
930 firmware_ver = kstrdup(&buf[2], GFP_NOIO);
931 break;
932 case 0x84: /* device name */
933 if (!device_name)
934 device_name = kstrdup(&buf[2], GFP_NOIO);
935 break;
936 }
937 }
938
939 printk(KERN_INFO "Nexio device: %s, firmware version: %s\n",
940 device_name, firmware_ver);
941
942 kfree(firmware_ver);
943 kfree(device_name);
944
945 usb_fill_bulk_urb(priv->ack, dev, usb_sndbulkpipe(dev, output_ep),
946 priv->ack_buf, sizeof(nexio_ack_pkt),
947 nexio_ack_complete, usbtouch);
948 ret = 0;
949
950out_buf:
951 kfree(buf);
952 return ret;
953}
954
955static void nexio_exit(struct usbtouch_usb *usbtouch)
956{
957 struct nexio_priv *priv = usbtouch->priv;
958
959 usb_kill_urb(priv->ack);
960 usb_free_urb(priv->ack);
961 kfree(priv->ack_buf);
962 kfree(priv);
963}
964
965static int nexio_read_data(struct usbtouch_usb *usbtouch, unsigned char *pkt)
966{
967 struct nexio_touch_packet *packet = (void *) pkt;
968 struct nexio_priv *priv = usbtouch->priv;
969 unsigned int data_len = be16_to_cpu(packet->data_len);
970 unsigned int x_len = be16_to_cpu(packet->x_len);
971 unsigned int y_len = be16_to_cpu(packet->y_len);
972 int x, y, begin_x, begin_y, end_x, end_y, w, h, ret;
973
974 /* got touch data? */
975 if ((pkt[0] & 0xe0) != 0xe0)
976 return 0;
977
978 if (data_len > 0xff)
979 data_len -= 0x100;
980 if (x_len > 0xff)
981 x_len -= 0x80;
982
983 /* send ACK */
984 ret = usb_submit_urb(priv->ack, GFP_ATOMIC);
985
986 if (!usbtouch->type->max_xc) {
987 usbtouch->type->max_xc = 2 * x_len;
988 input_set_abs_params(usbtouch->input, ABS_X,
989 0, usbtouch->type->max_xc, 0, 0);
990 usbtouch->type->max_yc = 2 * y_len;
991 input_set_abs_params(usbtouch->input, ABS_Y,
992 0, usbtouch->type->max_yc, 0, 0);
993 }
994 /*
995 * The device reports state of IR sensors on X and Y axes.
996 * Each byte represents "darkness" percentage (0-100) of one element.
997 * 17" touchscreen reports only 64 x 52 bytes so the resolution is low.
998 * This also means that there's a limited multi-touch capability but
999 * it's disabled (and untested) here as there's no X driver for that.
1000 */
1001 begin_x = end_x = begin_y = end_y = -1;
1002 for (x = 0; x < x_len; x++) {
1003 if (begin_x == -1 && packet->data[x] > NEXIO_THRESHOLD) {
1004 begin_x = x;
1005 continue;
1006 }
1007 if (end_x == -1 && begin_x != -1 && packet->data[x] < NEXIO_THRESHOLD) {
1008 end_x = x - 1;
1009 for (y = x_len; y < data_len; y++) {
1010 if (begin_y == -1 && packet->data[y] > NEXIO_THRESHOLD) {
1011 begin_y = y - x_len;
1012 continue;
1013 }
1014 if (end_y == -1 &&
1015 begin_y != -1 && packet->data[y] < NEXIO_THRESHOLD) {
1016 end_y = y - 1 - x_len;
1017 w = end_x - begin_x;
1018 h = end_y - begin_y;
1019#if 0
1020 /* multi-touch */
1021 input_report_abs(usbtouch->input,
1022 ABS_MT_TOUCH_MAJOR, max(w,h));
1023 input_report_abs(usbtouch->input,
1024 ABS_MT_TOUCH_MINOR, min(x,h));
1025 input_report_abs(usbtouch->input,
1026 ABS_MT_POSITION_X, 2*begin_x+w);
1027 input_report_abs(usbtouch->input,
1028 ABS_MT_POSITION_Y, 2*begin_y+h);
1029 input_report_abs(usbtouch->input,
1030 ABS_MT_ORIENTATION, w > h);
1031 input_mt_sync(usbtouch->input);
1032#endif
1033 /* single touch */
1034 usbtouch->x = 2 * begin_x + w;
1035 usbtouch->y = 2 * begin_y + h;
1036 usbtouch->touch = packet->flags & 0x01;
1037 begin_y = end_y = -1;
1038 return 1;
1039 }
1040 }
1041 begin_x = end_x = -1;
1042 }
1043
1044 }
1045 return 0;
1046}
1047#endif
1048
1049
1050/*****************************************************************************
1051 * ELO part
1052 */
1053
1054#ifdef CONFIG_TOUCHSCREEN_USB_ELO
1055
1056static int elo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
1057{
1058 dev->x = (pkt[3] << 8) | pkt[2];
1059 dev->y = (pkt[5] << 8) | pkt[4];
1060 dev->touch = pkt[6] > 0;
1061 dev->press = pkt[6];
1062
1063 return 1;
1064}
1065#endif
1066
1067
1068/*****************************************************************************
1069 * the different device descriptors
1070 */
1071#ifdef MULTI_PACKET
1072static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1073 unsigned char *pkt, int len);
1074#endif
1075
1076static struct usbtouch_device_info usbtouch_dev_info[] = {
1077#ifdef CONFIG_TOUCHSCREEN_USB_ELO
1078 [DEVTYPE_ELO] = {
1079 .min_xc = 0x0,
1080 .max_xc = 0x0fff,
1081 .min_yc = 0x0,
1082 .max_yc = 0x0fff,
1083 .max_press = 0xff,
1084 .rept_size = 8,
1085 .read_data = elo_read_data,
1086 },
1087#endif
1088
1089#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
1090 [DEVTYPE_EGALAX] = {
1091 .min_xc = 0x0,
1092 .max_xc = 0x07ff,
1093 .min_yc = 0x0,
1094 .max_yc = 0x07ff,
1095 .rept_size = 16,
1096 .process_pkt = usbtouch_process_multi,
1097 .get_pkt_len = egalax_get_pkt_len,
1098 .read_data = egalax_read_data,
1099 .init = egalax_init,
1100 },
1101#endif
1102
1103#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
1104 [DEVTYPE_PANJIT] = {
1105 .min_xc = 0x0,
1106 .max_xc = 0x0fff,
1107 .min_yc = 0x0,
1108 .max_yc = 0x0fff,
1109 .rept_size = 8,
1110 .read_data = panjit_read_data,
1111 },
1112#endif
1113
1114#ifdef CONFIG_TOUCHSCREEN_USB_3M
1115 [DEVTYPE_3M] = {
1116 .min_xc = 0x0,
1117 .max_xc = 0x4000,
1118 .min_yc = 0x0,
1119 .max_yc = 0x4000,
1120 .rept_size = 11,
1121 .read_data = mtouch_read_data,
1122 .init = mtouch_init,
1123 },
1124#endif
1125
1126#ifdef CONFIG_TOUCHSCREEN_USB_ITM
1127 [DEVTYPE_ITM] = {
1128 .min_xc = 0x0,
1129 .max_xc = 0x0fff,
1130 .min_yc = 0x0,
1131 .max_yc = 0x0fff,
1132 .max_press = 0xff,
1133 .rept_size = 8,
1134 .read_data = itm_read_data,
1135 },
1136#endif
1137
1138#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
1139 [DEVTYPE_ETURBO] = {
1140 .min_xc = 0x0,
1141 .max_xc = 0x07ff,
1142 .min_yc = 0x0,
1143 .max_yc = 0x07ff,
1144 .rept_size = 8,
1145 .process_pkt = usbtouch_process_multi,
1146 .get_pkt_len = eturbo_get_pkt_len,
1147 .read_data = eturbo_read_data,
1148 },
1149#endif
1150
1151#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
1152 [DEVTYPE_GUNZE] = {
1153 .min_xc = 0x0,
1154 .max_xc = 0x0fff,
1155 .min_yc = 0x0,
1156 .max_yc = 0x0fff,
1157 .rept_size = 4,
1158 .read_data = gunze_read_data,
1159 },
1160#endif
1161
1162#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
1163 [DEVTYPE_DMC_TSC10] = {
1164 .min_xc = 0x0,
1165 .max_xc = 0x03ff,
1166 .min_yc = 0x0,
1167 .max_yc = 0x03ff,
1168 .rept_size = 5,
1169 .init = dmc_tsc10_init,
1170 .read_data = dmc_tsc10_read_data,
1171 },
1172#endif
1173
1174#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
1175 [DEVTYPE_IRTOUCH] = {
1176 .min_xc = 0x0,
1177 .max_xc = 0x0fff,
1178 .min_yc = 0x0,
1179 .max_yc = 0x0fff,
1180 .rept_size = 8,
1181 .read_data = irtouch_read_data,
1182 },
1183
1184 [DEVTYPE_IRTOUCH_HIRES] = {
1185 .min_xc = 0x0,
1186 .max_xc = 0x7fff,
1187 .min_yc = 0x0,
1188 .max_yc = 0x7fff,
1189 .rept_size = 8,
1190 .read_data = irtouch_read_data,
1191 },
1192#endif
1193
1194#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
1195 [DEVTYPE_IDEALTEK] = {
1196 .min_xc = 0x0,
1197 .max_xc = 0x0fff,
1198 .min_yc = 0x0,
1199 .max_yc = 0x0fff,
1200 .rept_size = 8,
1201 .process_pkt = usbtouch_process_multi,
1202 .get_pkt_len = idealtek_get_pkt_len,
1203 .read_data = idealtek_read_data,
1204 },
1205#endif
1206
1207#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
1208 [DEVTYPE_GENERAL_TOUCH] = {
1209 .min_xc = 0x0,
1210 .max_xc = 0x7fff,
1211 .min_yc = 0x0,
1212 .max_yc = 0x7fff,
1213 .rept_size = 7,
1214 .read_data = general_touch_read_data,
1215 },
1216#endif
1217
1218#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
1219 [DEVTYPE_GOTOP] = {
1220 .min_xc = 0x0,
1221 .max_xc = 0x03ff,
1222 .min_yc = 0x0,
1223 .max_yc = 0x03ff,
1224 .rept_size = 4,
1225 .read_data = gotop_read_data,
1226 },
1227#endif
1228
1229#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
1230 [DEVTYPE_JASTEC] = {
1231 .min_xc = 0x0,
1232 .max_xc = 0x0fff,
1233 .min_yc = 0x0,
1234 .max_yc = 0x0fff,
1235 .rept_size = 4,
1236 .read_data = jastec_read_data,
1237 },
1238#endif
1239
1240#ifdef CONFIG_TOUCHSCREEN_USB_E2I
1241 [DEVTYPE_E2I] = {
1242 .min_xc = 0x0,
1243 .max_xc = 0x7fff,
1244 .min_yc = 0x0,
1245 .max_yc = 0x7fff,
1246 .rept_size = 6,
1247 .init = e2i_init,
1248 .read_data = e2i_read_data,
1249 },
1250#endif
1251
1252#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
1253 [DEVTYPE_ZYTRONIC] = {
1254 .min_xc = 0x0,
1255 .max_xc = 0x03ff,
1256 .min_yc = 0x0,
1257 .max_yc = 0x03ff,
1258 .rept_size = 5,
1259 .read_data = zytronic_read_data,
1260 .irq_always = true,
1261 },
1262#endif
1263
1264#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
1265 [DEVTYPE_TC45USB] = {
1266 .min_xc = 0x0,
1267 .max_xc = 0x0fff,
1268 .min_yc = 0x0,
1269 .max_yc = 0x0fff,
1270 .rept_size = 5,
1271 .read_data = tc45usb_read_data,
1272 },
1273#endif
1274
1275#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
1276 [DEVTYPE_NEXIO] = {
1277 .rept_size = 1024,
1278 .irq_always = true,
1279 .read_data = nexio_read_data,
1280 .alloc = nexio_alloc,
1281 .init = nexio_init,
1282 .exit = nexio_exit,
1283 },
1284#endif
1285#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
1286 [DEVTYPE_ETOUCH] = {
1287 .min_xc = 0x0,
1288 .max_xc = 0x07ff,
1289 .min_yc = 0x0,
1290 .max_yc = 0x07ff,
1291 .rept_size = 16,
1292 .process_pkt = usbtouch_process_multi,
1293 .get_pkt_len = etouch_get_pkt_len,
1294 .read_data = etouch_read_data,
1295 },
1296#endif
1297};
1298
1299
1300/*****************************************************************************
1301 * Generic Part
1302 */
1303static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
1304 unsigned char *pkt, int len)
1305{
1306 struct usbtouch_device_info *type = usbtouch->type;
1307
1308 if (!type->read_data(usbtouch, pkt))
1309 return;
1310
1311 input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
1312
1313 if (swap_xy) {
1314 input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
1315 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
1316 } else {
1317 input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
1318 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
1319 }
1320 if (type->max_press)
1321 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
1322 input_sync(usbtouch->input);
1323}
1324
1325
1326#ifdef MULTI_PACKET
1327static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1328 unsigned char *pkt, int len)
1329{
1330 unsigned char *buffer;
1331 int pkt_len, pos, buf_len, tmp;
1332
1333 /* process buffer */
1334 if (unlikely(usbtouch->buf_len)) {
1335 /* try to get size */
1336 pkt_len = usbtouch->type->get_pkt_len(
1337 usbtouch->buffer, usbtouch->buf_len);
1338
1339 /* drop? */
1340 if (unlikely(!pkt_len))
1341 goto out_flush_buf;
1342
1343 /* need to append -pkt_len bytes before able to get size */
1344 if (unlikely(pkt_len < 0)) {
1345 int append = -pkt_len;
1346 if (unlikely(append > len))
1347 append = len;
1348 if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
1349 goto out_flush_buf;
1350 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
1351 usbtouch->buf_len += append;
1352
1353 pkt_len = usbtouch->type->get_pkt_len(
1354 usbtouch->buffer, usbtouch->buf_len);
1355 if (pkt_len < 0)
1356 return;
1357 }
1358
1359 /* append */
1360 tmp = pkt_len - usbtouch->buf_len;
1361 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
1362 goto out_flush_buf;
1363 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
1364 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
1365
1366 buffer = pkt + tmp;
1367 buf_len = len - tmp;
1368 } else {
1369 buffer = pkt;
1370 buf_len = len;
1371 }
1372
1373 /* loop over the received packet, process */
1374 pos = 0;
1375 while (pos < buf_len) {
1376 /* get packet len */
1377 pkt_len = usbtouch->type->get_pkt_len(buffer + pos,
1378 buf_len - pos);
1379
1380 /* unknown packet: skip one byte */
1381 if (unlikely(!pkt_len)) {
1382 pos++;
1383 continue;
1384 }
1385
1386 /* full packet: process */
1387 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
1388 usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
1389 } else {
1390 /* incomplete packet: save in buffer */
1391 memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
1392 usbtouch->buf_len = buf_len - pos;
1393 return;
1394 }
1395 pos += pkt_len;
1396 }
1397
1398out_flush_buf:
1399 usbtouch->buf_len = 0;
1400 return;
1401}
1402#endif
1403
1404
1405static void usbtouch_irq(struct urb *urb)
1406{
1407 struct usbtouch_usb *usbtouch = urb->context;
1408 struct device *dev = &usbtouch->interface->dev;
1409 int retval;
1410
1411 switch (urb->status) {
1412 case 0:
1413 /* success */
1414 break;
1415 case -ETIME:
1416 /* this urb is timing out */
1417 dev_dbg(dev,
1418 "%s - urb timed out - was the device unplugged?\n",
1419 __func__);
1420 return;
1421 case -ECONNRESET:
1422 case -ENOENT:
1423 case -ESHUTDOWN:
1424 case -EPIPE:
1425 /* this urb is terminated, clean up */
1426 dev_dbg(dev, "%s - urb shutting down with status: %d\n",
1427 __func__, urb->status);
1428 return;
1429 default:
1430 dev_dbg(dev, "%s - nonzero urb status received: %d\n",
1431 __func__, urb->status);
1432 goto exit;
1433 }
1434
1435 usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
1436
1437exit:
1438 usb_mark_last_busy(interface_to_usbdev(usbtouch->interface));
1439 retval = usb_submit_urb(urb, GFP_ATOMIC);
1440 if (retval)
1441 dev_err(dev, "%s - usb_submit_urb failed with result: %d\n",
1442 __func__, retval);
1443}
1444
1445static int usbtouch_open(struct input_dev *input)
1446{
1447 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1448 int r;
1449
1450 usbtouch->irq->dev = interface_to_usbdev(usbtouch->interface);
1451
1452 r = usb_autopm_get_interface(usbtouch->interface) ? -EIO : 0;
1453 if (r < 0)
1454 goto out;
1455
1456 mutex_lock(&usbtouch->pm_mutex);
1457 if (!usbtouch->type->irq_always) {
1458 if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) {
1459 r = -EIO;
1460 goto out_put;
1461 }
1462 }
1463
1464 usbtouch->interface->needs_remote_wakeup = 1;
1465 usbtouch->is_open = true;
1466out_put:
1467 mutex_unlock(&usbtouch->pm_mutex);
1468 usb_autopm_put_interface(usbtouch->interface);
1469out:
1470 return r;
1471}
1472
1473static void usbtouch_close(struct input_dev *input)
1474{
1475 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1476 int r;
1477
1478 mutex_lock(&usbtouch->pm_mutex);
1479 if (!usbtouch->type->irq_always)
1480 usb_kill_urb(usbtouch->irq);
1481 usbtouch->is_open = false;
1482 mutex_unlock(&usbtouch->pm_mutex);
1483
1484 r = usb_autopm_get_interface(usbtouch->interface);
1485 usbtouch->interface->needs_remote_wakeup = 0;
1486 if (!r)
1487 usb_autopm_put_interface(usbtouch->interface);
1488}
1489
1490static int usbtouch_suspend
1491(struct usb_interface *intf, pm_message_t message)
1492{
1493 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1494
1495 usb_kill_urb(usbtouch->irq);
1496
1497 return 0;
1498}
1499
1500static int usbtouch_resume(struct usb_interface *intf)
1501{
1502 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1503 int result = 0;
1504
1505 mutex_lock(&usbtouch->pm_mutex);
1506 if (usbtouch->is_open || usbtouch->type->irq_always)
1507 result = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1508 mutex_unlock(&usbtouch->pm_mutex);
1509
1510 return result;
1511}
1512
1513static int usbtouch_reset_resume(struct usb_interface *intf)
1514{
1515 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1516 int err = 0;
1517
1518 /* reinit the device */
1519 if (usbtouch->type->init) {
1520 err = usbtouch->type->init(usbtouch);
1521 if (err) {
1522 dev_dbg(&intf->dev,
1523 "%s - type->init() failed, err: %d\n",
1524 __func__, err);
1525 return err;
1526 }
1527 }
1528
1529 /* restart IO if needed */
1530 mutex_lock(&usbtouch->pm_mutex);
1531 if (usbtouch->is_open)
1532 err = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1533 mutex_unlock(&usbtouch->pm_mutex);
1534
1535 return err;
1536}
1537
1538static void usbtouch_free_buffers(struct usb_device *udev,
1539 struct usbtouch_usb *usbtouch)
1540{
1541 usb_free_coherent(udev, usbtouch->data_size,
1542 usbtouch->data, usbtouch->data_dma);
1543 kfree(usbtouch->buffer);
1544}
1545
1546static struct usb_endpoint_descriptor *
1547usbtouch_get_input_endpoint(struct usb_host_interface *interface)
1548{
1549 int i;
1550
1551 for (i = 0; i < interface->desc.bNumEndpoints; i++)
1552 if (usb_endpoint_dir_in(&interface->endpoint[i].desc))
1553 return &interface->endpoint[i].desc;
1554
1555 return NULL;
1556}
1557
1558static int usbtouch_probe(struct usb_interface *intf,
1559 const struct usb_device_id *id)
1560{
1561 struct usbtouch_usb *usbtouch;
1562 struct input_dev *input_dev;
1563 struct usb_endpoint_descriptor *endpoint;
1564 struct usb_device *udev = interface_to_usbdev(intf);
1565 struct usbtouch_device_info *type;
1566 int err = -ENOMEM;
1567
1568 /* some devices are ignored */
1569 if (id->driver_info == DEVTYPE_IGNORE)
1570 return -ENODEV;
1571
1572 endpoint = usbtouch_get_input_endpoint(intf->cur_altsetting);
1573 if (!endpoint)
1574 return -ENXIO;
1575
1576 usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
1577 input_dev = input_allocate_device();
1578 if (!usbtouch || !input_dev)
1579 goto out_free;
1580
1581 type = &usbtouch_dev_info[id->driver_info];
1582 usbtouch->type = type;
1583 if (!type->process_pkt)
1584 type->process_pkt = usbtouch_process_pkt;
1585
1586 usbtouch->data_size = type->rept_size;
1587 if (type->get_pkt_len) {
1588 /*
1589 * When dealing with variable-length packets we should
1590 * not request more than wMaxPacketSize bytes at once
1591 * as we do not know if there is more data coming or
1592 * we filled exactly wMaxPacketSize bytes and there is
1593 * nothing else.
1594 */
1595 usbtouch->data_size = min(usbtouch->data_size,
1596 usb_endpoint_maxp(endpoint));
1597 }
1598
1599 usbtouch->data = usb_alloc_coherent(udev, usbtouch->data_size,
1600 GFP_KERNEL, &usbtouch->data_dma);
1601 if (!usbtouch->data)
1602 goto out_free;
1603
1604 if (type->get_pkt_len) {
1605 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
1606 if (!usbtouch->buffer)
1607 goto out_free_buffers;
1608 }
1609
1610 usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
1611 if (!usbtouch->irq) {
1612 dev_dbg(&intf->dev,
1613 "%s - usb_alloc_urb failed: usbtouch->irq\n", __func__);
1614 goto out_free_buffers;
1615 }
1616
1617 usbtouch->interface = intf;
1618 usbtouch->input = input_dev;
1619
1620 if (udev->manufacturer)
1621 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
1622
1623 if (udev->product) {
1624 if (udev->manufacturer)
1625 strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
1626 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
1627 }
1628
1629 if (!strlen(usbtouch->name))
1630 snprintf(usbtouch->name, sizeof(usbtouch->name),
1631 "USB Touchscreen %04x:%04x",
1632 le16_to_cpu(udev->descriptor.idVendor),
1633 le16_to_cpu(udev->descriptor.idProduct));
1634
1635 usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
1636 strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
1637
1638 input_dev->name = usbtouch->name;
1639 input_dev->phys = usbtouch->phys;
1640 usb_to_input_id(udev, &input_dev->id);
1641 input_dev->dev.parent = &intf->dev;
1642
1643 input_set_drvdata(input_dev, usbtouch);
1644
1645 input_dev->open = usbtouch_open;
1646 input_dev->close = usbtouch_close;
1647
1648 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1649 input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
1650 input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0);
1651 input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0);
1652 if (type->max_press)
1653 input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press,
1654 type->max_press, 0, 0);
1655
1656 if (usb_endpoint_type(endpoint) == USB_ENDPOINT_XFER_INT)
1657 usb_fill_int_urb(usbtouch->irq, udev,
1658 usb_rcvintpipe(udev, endpoint->bEndpointAddress),
1659 usbtouch->data, usbtouch->data_size,
1660 usbtouch_irq, usbtouch, endpoint->bInterval);
1661 else
1662 usb_fill_bulk_urb(usbtouch->irq, udev,
1663 usb_rcvbulkpipe(udev, endpoint->bEndpointAddress),
1664 usbtouch->data, usbtouch->data_size,
1665 usbtouch_irq, usbtouch);
1666
1667 usbtouch->irq->dev = udev;
1668 usbtouch->irq->transfer_dma = usbtouch->data_dma;
1669 usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1670
1671 /* device specific allocations */
1672 if (type->alloc) {
1673 err = type->alloc(usbtouch);
1674 if (err) {
1675 dev_dbg(&intf->dev,
1676 "%s - type->alloc() failed, err: %d\n",
1677 __func__, err);
1678 goto out_free_urb;
1679 }
1680 }
1681
1682 /* device specific initialisation*/
1683 if (type->init) {
1684 err = type->init(usbtouch);
1685 if (err) {
1686 dev_dbg(&intf->dev,
1687 "%s - type->init() failed, err: %d\n",
1688 __func__, err);
1689 goto out_do_exit;
1690 }
1691 }
1692
1693 err = input_register_device(usbtouch->input);
1694 if (err) {
1695 dev_dbg(&intf->dev,
1696 "%s - input_register_device failed, err: %d\n",
1697 __func__, err);
1698 goto out_do_exit;
1699 }
1700
1701 usb_set_intfdata(intf, usbtouch);
1702
1703 if (usbtouch->type->irq_always) {
1704 /* this can't fail */
1705 usb_autopm_get_interface(intf);
1706 err = usb_submit_urb(usbtouch->irq, GFP_KERNEL);
1707 if (err) {
1708 usb_autopm_put_interface(intf);
1709 dev_err(&intf->dev,
1710 "%s - usb_submit_urb failed with result: %d\n",
1711 __func__, err);
1712 goto out_unregister_input;
1713 }
1714 }
1715
1716 return 0;
1717
1718out_unregister_input:
1719 input_unregister_device(input_dev);
1720 input_dev = NULL;
1721out_do_exit:
1722 if (type->exit)
1723 type->exit(usbtouch);
1724out_free_urb:
1725 usb_free_urb(usbtouch->irq);
1726out_free_buffers:
1727 usbtouch_free_buffers(udev, usbtouch);
1728out_free:
1729 input_free_device(input_dev);
1730 kfree(usbtouch);
1731 return err;
1732}
1733
1734static void usbtouch_disconnect(struct usb_interface *intf)
1735{
1736 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1737
1738 if (!usbtouch)
1739 return;
1740
1741 dev_dbg(&intf->dev,
1742 "%s - usbtouch is initialized, cleaning up\n", __func__);
1743
1744 usb_set_intfdata(intf, NULL);
1745 /* this will stop IO via close */
1746 input_unregister_device(usbtouch->input);
1747 usb_free_urb(usbtouch->irq);
1748 if (usbtouch->type->exit)
1749 usbtouch->type->exit(usbtouch);
1750 usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch);
1751 kfree(usbtouch);
1752}
1753
1754MODULE_DEVICE_TABLE(usb, usbtouch_devices);
1755
1756static struct usb_driver usbtouch_driver = {
1757 .name = "usbtouchscreen",
1758 .probe = usbtouch_probe,
1759 .disconnect = usbtouch_disconnect,
1760 .suspend = usbtouch_suspend,
1761 .resume = usbtouch_resume,
1762 .reset_resume = usbtouch_reset_resume,
1763 .id_table = usbtouch_devices,
1764 .supports_autosuspend = 1,
1765};
1766
1767module_usb_driver(usbtouch_driver);
1768
1769MODULE_AUTHOR("Daniel Ritz <daniel.ritz@gmx.ch>");
1770MODULE_DESCRIPTION("USB Touchscreen Driver");
1771MODULE_LICENSE("GPL");
1772
1773MODULE_ALIAS("touchkitusb");
1774MODULE_ALIAS("itmtouch");
1775MODULE_ALIAS("mtouchusb");