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Merge branch 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel into...
[deliverable/linux.git] / drivers / input / touchscreen / usbtouchscreen.c
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/init.h>
55 #include <linux/usb.h>
56 #include <linux/usb/input.h>
57 #include <linux/hid.h>
58
59
60 #define DRIVER_VERSION "v0.6"
61 #define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>"
62 #define DRIVER_DESC "USB Touchscreen Driver"
63
64 static bool swap_xy;
65 module_param(swap_xy, bool, 0644);
66 MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
67
68 static bool hwcalib_xy;
69 module_param(hwcalib_xy, bool, 0644);
70 MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available");
71
72 /* device specifc data/functions */
73 struct usbtouch_usb;
74 struct usbtouch_device_info {
75 int min_xc, max_xc;
76 int min_yc, max_yc;
77 int min_press, max_press;
78 int rept_size;
79
80 /*
81 * Always service the USB devices irq not just when the input device is
82 * open. This is useful when devices have a watchdog which prevents us
83 * from periodically polling the device. Leave this unset unless your
84 * touchscreen device requires it, as it does consume more of the USB
85 * bandwidth.
86 */
87 bool irq_always;
88
89 void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
90
91 /*
92 * used to get the packet len. possible return values:
93 * > 0: packet len
94 * = 0: skip one byte
95 * < 0: -return value more bytes needed
96 */
97 int (*get_pkt_len) (unsigned char *pkt, int len);
98
99 int (*read_data) (struct usbtouch_usb *usbtouch, unsigned char *pkt);
100 int (*alloc) (struct usbtouch_usb *usbtouch);
101 int (*init) (struct usbtouch_usb *usbtouch);
102 void (*exit) (struct usbtouch_usb *usbtouch);
103 };
104
105 /* a usbtouch device */
106 struct usbtouch_usb {
107 unsigned char *data;
108 dma_addr_t data_dma;
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 */
125 enum {
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_IDEALTEK,
136 DEVTYPE_GENERAL_TOUCH,
137 DEVTYPE_GOTOP,
138 DEVTYPE_JASTEC,
139 DEVTYPE_E2I,
140 DEVTYPE_ZYTRONIC,
141 DEVTYPE_TC45USB,
142 DEVTYPE_NEXIO,
143 DEVTYPE_ELO,
144 DEVTYPE_ETOUCH,
145 };
146
147 #define USB_DEVICE_HID_CLASS(vend, prod) \
148 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
149 | USB_DEVICE_ID_MATCH_INT_PROTOCOL \
150 | USB_DEVICE_ID_MATCH_DEVICE, \
151 .idVendor = (vend), \
152 .idProduct = (prod), \
153 .bInterfaceClass = USB_INTERFACE_CLASS_HID, \
154 .bInterfaceProtocol = USB_INTERFACE_PROTOCOL_MOUSE
155
156 static const struct usb_device_id usbtouch_devices[] = {
157 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
158 /* ignore the HID capable devices, handled by usbhid */
159 {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE},
160 {USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE},
161
162 /* normal device IDs */
163 {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
164 {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
165 {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
166 {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
167 {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
168 {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
169 {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
170 #endif
171
172 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
173 {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
174 {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
175 {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
176 {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
177 #endif
178
179 #ifdef CONFIG_TOUCHSCREEN_USB_3M
180 {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
181 #endif
182
183 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
184 {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
185 {USB_DEVICE(0x16e3, 0xf9e9), .driver_info = DEVTYPE_ITM},
186 #endif
187
188 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
189 {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
190 #endif
191
192 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
193 {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
194 #endif
195
196 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
197 {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
198 #endif
199
200 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
201 {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
202 {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
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
263 static 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
278 static 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
307 static 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
346 static 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
358 static 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
390 static 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
403 static 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
425 static 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
445 static 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
459 static 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
504 static 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
541 static 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
557 static 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
572 static 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
608 static 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 /* set coordinate output rate */
631 buf[0] = buf[1] = 0xFF;
632 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
633 TSC10_CMD_RATE,
634 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
635 TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
636 if (ret < 0)
637 goto err_out;
638 if ((buf[0] != 0x06) && (buf[0] != 0x15 || buf[1] != 0x01)) {
639 ret = -ENODEV;
640 goto err_out;
641 }
642
643 /* start sending data */
644 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
645 TSC10_CMD_DATA1,
646 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
647 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
648 err_out:
649 kfree(buf);
650 err_nobuf:
651 return ret;
652 }
653
654
655 static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
656 {
657 dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
658 dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
659 dev->touch = pkt[0] & 0x01;
660
661 return 1;
662 }
663 #endif
664
665
666 /*****************************************************************************
667 * IRTOUCH Part
668 */
669 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
670 static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
671 {
672 dev->x = (pkt[3] << 8) | pkt[2];
673 dev->y = (pkt[5] << 8) | pkt[4];
674 dev->touch = (pkt[1] & 0x03) ? 1 : 0;
675
676 return 1;
677 }
678 #endif
679
680 /*****************************************************************************
681 * ET&T TC5UH/TC4UM part
682 */
683 #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
684 static int tc45usb_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
685 {
686 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
687 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
688 dev->touch = pkt[0] & 0x01;
689
690 return 1;
691 }
692 #endif
693
694 /*****************************************************************************
695 * IdealTEK URTC1000 Part
696 */
697 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
698 #ifndef MULTI_PACKET
699 #define MULTI_PACKET
700 #endif
701 static int idealtek_get_pkt_len(unsigned char *buf, int len)
702 {
703 if (buf[0] & 0x80)
704 return 5;
705 if (buf[0] == 0x01)
706 return len;
707 return 0;
708 }
709
710 static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
711 {
712 switch (pkt[0] & 0x98) {
713 case 0x88:
714 /* touch data in IdealTEK mode */
715 dev->x = (pkt[1] << 5) | (pkt[2] >> 2);
716 dev->y = (pkt[3] << 5) | (pkt[4] >> 2);
717 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
718 return 1;
719
720 case 0x98:
721 /* touch data in MT emulation mode */
722 dev->x = (pkt[2] << 5) | (pkt[1] >> 2);
723 dev->y = (pkt[4] << 5) | (pkt[3] >> 2);
724 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
725 return 1;
726
727 default:
728 return 0;
729 }
730 }
731 #endif
732
733 /*****************************************************************************
734 * General Touch Part
735 */
736 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
737 static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
738 {
739 dev->x = (pkt[2] << 8) | pkt[1];
740 dev->y = (pkt[4] << 8) | pkt[3];
741 dev->press = pkt[5] & 0xff;
742 dev->touch = pkt[0] & 0x01;
743
744 return 1;
745 }
746 #endif
747
748 /*****************************************************************************
749 * GoTop Part
750 */
751 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
752 static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
753 {
754 dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
755 dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
756 dev->touch = pkt[0] & 0x01;
757
758 return 1;
759 }
760 #endif
761
762 /*****************************************************************************
763 * JASTEC Part
764 */
765 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
766 static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
767 {
768 dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f);
769 dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f);
770 dev->touch = (pkt[0] & 0x40) >> 6;
771
772 return 1;
773 }
774 #endif
775
776 /*****************************************************************************
777 * Zytronic Part
778 */
779 #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
780 static int zytronic_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
781 {
782 struct usb_interface *intf = dev->interface;
783
784 switch (pkt[0]) {
785 case 0x3A: /* command response */
786 dev_dbg(&intf->dev, "%s: Command response %d\n", __func__, pkt[1]);
787 break;
788
789 case 0xC0: /* down */
790 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
791 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
792 dev->touch = 1;
793 dev_dbg(&intf->dev, "%s: down %d,%d\n", __func__, dev->x, dev->y);
794 return 1;
795
796 case 0x80: /* up */
797 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
798 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
799 dev->touch = 0;
800 dev_dbg(&intf->dev, "%s: up %d,%d\n", __func__, dev->x, dev->y);
801 return 1;
802
803 default:
804 dev_dbg(&intf->dev, "%s: Unknown return %d\n", __func__, pkt[0]);
805 break;
806 }
807
808 return 0;
809 }
810 #endif
811
812 /*****************************************************************************
813 * NEXIO Part
814 */
815 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
816
817 #define NEXIO_TIMEOUT 5000
818 #define NEXIO_BUFSIZE 1024
819 #define NEXIO_THRESHOLD 50
820
821 struct nexio_priv {
822 struct urb *ack;
823 unsigned char *ack_buf;
824 };
825
826 struct nexio_touch_packet {
827 u8 flags; /* 0xe1 = touch, 0xe1 = release */
828 __be16 data_len; /* total bytes of touch data */
829 __be16 x_len; /* bytes for X axis */
830 __be16 y_len; /* bytes for Y axis */
831 u8 data[];
832 } __attribute__ ((packed));
833
834 static unsigned char nexio_ack_pkt[2] = { 0xaa, 0x02 };
835 static unsigned char nexio_init_pkt[4] = { 0x82, 0x04, 0x0a, 0x0f };
836
837 static void nexio_ack_complete(struct urb *urb)
838 {
839 }
840
841 static int nexio_alloc(struct usbtouch_usb *usbtouch)
842 {
843 struct nexio_priv *priv;
844 int ret = -ENOMEM;
845
846 usbtouch->priv = kmalloc(sizeof(struct nexio_priv), GFP_KERNEL);
847 if (!usbtouch->priv)
848 goto out_buf;
849
850 priv = usbtouch->priv;
851
852 priv->ack_buf = kmemdup(nexio_ack_pkt, sizeof(nexio_ack_pkt),
853 GFP_KERNEL);
854 if (!priv->ack_buf)
855 goto err_priv;
856
857 priv->ack = usb_alloc_urb(0, GFP_KERNEL);
858 if (!priv->ack) {
859 dev_dbg(&usbtouch->interface->dev,
860 "%s - usb_alloc_urb failed: usbtouch->ack\n", __func__);
861 goto err_ack_buf;
862 }
863
864 return 0;
865
866 err_ack_buf:
867 kfree(priv->ack_buf);
868 err_priv:
869 kfree(priv);
870 out_buf:
871 return ret;
872 }
873
874 static int nexio_init(struct usbtouch_usb *usbtouch)
875 {
876 struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
877 struct usb_host_interface *interface = usbtouch->interface->cur_altsetting;
878 struct nexio_priv *priv = usbtouch->priv;
879 int ret = -ENOMEM;
880 int actual_len, i;
881 unsigned char *buf;
882 char *firmware_ver = NULL, *device_name = NULL;
883 int input_ep = 0, output_ep = 0;
884
885 /* find first input and output endpoint */
886 for (i = 0; i < interface->desc.bNumEndpoints; i++) {
887 if (!input_ep &&
888 usb_endpoint_dir_in(&interface->endpoint[i].desc))
889 input_ep = interface->endpoint[i].desc.bEndpointAddress;
890 if (!output_ep &&
891 usb_endpoint_dir_out(&interface->endpoint[i].desc))
892 output_ep = interface->endpoint[i].desc.bEndpointAddress;
893 }
894 if (!input_ep || !output_ep)
895 return -ENXIO;
896
897 buf = kmalloc(NEXIO_BUFSIZE, GFP_NOIO);
898 if (!buf)
899 goto out_buf;
900
901 /* two empty reads */
902 for (i = 0; i < 2; i++) {
903 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
904 buf, NEXIO_BUFSIZE, &actual_len,
905 NEXIO_TIMEOUT);
906 if (ret < 0)
907 goto out_buf;
908 }
909
910 /* send init command */
911 memcpy(buf, nexio_init_pkt, sizeof(nexio_init_pkt));
912 ret = usb_bulk_msg(dev, usb_sndbulkpipe(dev, output_ep),
913 buf, sizeof(nexio_init_pkt), &actual_len,
914 NEXIO_TIMEOUT);
915 if (ret < 0)
916 goto out_buf;
917
918 /* read replies */
919 for (i = 0; i < 3; i++) {
920 memset(buf, 0, NEXIO_BUFSIZE);
921 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
922 buf, NEXIO_BUFSIZE, &actual_len,
923 NEXIO_TIMEOUT);
924 if (ret < 0 || actual_len < 1 || buf[1] != actual_len)
925 continue;
926 switch (buf[0]) {
927 case 0x83: /* firmware version */
928 if (!firmware_ver)
929 firmware_ver = kstrdup(&buf[2], GFP_NOIO);
930 break;
931 case 0x84: /* device name */
932 if (!device_name)
933 device_name = kstrdup(&buf[2], GFP_NOIO);
934 break;
935 }
936 }
937
938 printk(KERN_INFO "Nexio device: %s, firmware version: %s\n",
939 device_name, firmware_ver);
940
941 kfree(firmware_ver);
942 kfree(device_name);
943
944 usb_fill_bulk_urb(priv->ack, dev, usb_sndbulkpipe(dev, output_ep),
945 priv->ack_buf, sizeof(nexio_ack_pkt),
946 nexio_ack_complete, usbtouch);
947 ret = 0;
948
949 out_buf:
950 kfree(buf);
951 return ret;
952 }
953
954 static void nexio_exit(struct usbtouch_usb *usbtouch)
955 {
956 struct nexio_priv *priv = usbtouch->priv;
957
958 usb_kill_urb(priv->ack);
959 usb_free_urb(priv->ack);
960 kfree(priv->ack_buf);
961 kfree(priv);
962 }
963
964 static int nexio_read_data(struct usbtouch_usb *usbtouch, unsigned char *pkt)
965 {
966 struct nexio_touch_packet *packet = (void *) pkt;
967 struct nexio_priv *priv = usbtouch->priv;
968 unsigned int data_len = be16_to_cpu(packet->data_len);
969 unsigned int x_len = be16_to_cpu(packet->x_len);
970 unsigned int y_len = be16_to_cpu(packet->y_len);
971 int x, y, begin_x, begin_y, end_x, end_y, w, h, ret;
972
973 /* got touch data? */
974 if ((pkt[0] & 0xe0) != 0xe0)
975 return 0;
976
977 if (data_len > 0xff)
978 data_len -= 0x100;
979 if (x_len > 0xff)
980 x_len -= 0x80;
981
982 /* send ACK */
983 ret = usb_submit_urb(priv->ack, GFP_ATOMIC);
984
985 if (!usbtouch->type->max_xc) {
986 usbtouch->type->max_xc = 2 * x_len;
987 input_set_abs_params(usbtouch->input, ABS_X,
988 0, usbtouch->type->max_xc, 0, 0);
989 usbtouch->type->max_yc = 2 * y_len;
990 input_set_abs_params(usbtouch->input, ABS_Y,
991 0, usbtouch->type->max_yc, 0, 0);
992 }
993 /*
994 * The device reports state of IR sensors on X and Y axes.
995 * Each byte represents "darkness" percentage (0-100) of one element.
996 * 17" touchscreen reports only 64 x 52 bytes so the resolution is low.
997 * This also means that there's a limited multi-touch capability but
998 * it's disabled (and untested) here as there's no X driver for that.
999 */
1000 begin_x = end_x = begin_y = end_y = -1;
1001 for (x = 0; x < x_len; x++) {
1002 if (begin_x == -1 && packet->data[x] > NEXIO_THRESHOLD) {
1003 begin_x = x;
1004 continue;
1005 }
1006 if (end_x == -1 && begin_x != -1 && packet->data[x] < NEXIO_THRESHOLD) {
1007 end_x = x - 1;
1008 for (y = x_len; y < data_len; y++) {
1009 if (begin_y == -1 && packet->data[y] > NEXIO_THRESHOLD) {
1010 begin_y = y - x_len;
1011 continue;
1012 }
1013 if (end_y == -1 &&
1014 begin_y != -1 && packet->data[y] < NEXIO_THRESHOLD) {
1015 end_y = y - 1 - x_len;
1016 w = end_x - begin_x;
1017 h = end_y - begin_y;
1018 #if 0
1019 /* multi-touch */
1020 input_report_abs(usbtouch->input,
1021 ABS_MT_TOUCH_MAJOR, max(w,h));
1022 input_report_abs(usbtouch->input,
1023 ABS_MT_TOUCH_MINOR, min(x,h));
1024 input_report_abs(usbtouch->input,
1025 ABS_MT_POSITION_X, 2*begin_x+w);
1026 input_report_abs(usbtouch->input,
1027 ABS_MT_POSITION_Y, 2*begin_y+h);
1028 input_report_abs(usbtouch->input,
1029 ABS_MT_ORIENTATION, w > h);
1030 input_mt_sync(usbtouch->input);
1031 #endif
1032 /* single touch */
1033 usbtouch->x = 2 * begin_x + w;
1034 usbtouch->y = 2 * begin_y + h;
1035 usbtouch->touch = packet->flags & 0x01;
1036 begin_y = end_y = -1;
1037 return 1;
1038 }
1039 }
1040 begin_x = end_x = -1;
1041 }
1042
1043 }
1044 return 0;
1045 }
1046 #endif
1047
1048
1049 /*****************************************************************************
1050 * ELO part
1051 */
1052
1053 #ifdef CONFIG_TOUCHSCREEN_USB_ELO
1054
1055 static int elo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
1056 {
1057 dev->x = (pkt[3] << 8) | pkt[2];
1058 dev->y = (pkt[5] << 8) | pkt[4];
1059 dev->touch = pkt[6] > 0;
1060 dev->press = pkt[6];
1061
1062 return 1;
1063 }
1064 #endif
1065
1066
1067 /*****************************************************************************
1068 * the different device descriptors
1069 */
1070 #ifdef MULTI_PACKET
1071 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1072 unsigned char *pkt, int len);
1073 #endif
1074
1075 static struct usbtouch_device_info usbtouch_dev_info[] = {
1076 #ifdef CONFIG_TOUCHSCREEN_USB_ELO
1077 [DEVTYPE_ELO] = {
1078 .min_xc = 0x0,
1079 .max_xc = 0x0fff,
1080 .min_yc = 0x0,
1081 .max_yc = 0x0fff,
1082 .max_press = 0xff,
1083 .rept_size = 8,
1084 .read_data = elo_read_data,
1085 },
1086 #endif
1087
1088 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
1089 [DEVTYPE_EGALAX] = {
1090 .min_xc = 0x0,
1091 .max_xc = 0x07ff,
1092 .min_yc = 0x0,
1093 .max_yc = 0x07ff,
1094 .rept_size = 16,
1095 .process_pkt = usbtouch_process_multi,
1096 .get_pkt_len = egalax_get_pkt_len,
1097 .read_data = egalax_read_data,
1098 .init = egalax_init,
1099 },
1100 #endif
1101
1102 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
1103 [DEVTYPE_PANJIT] = {
1104 .min_xc = 0x0,
1105 .max_xc = 0x0fff,
1106 .min_yc = 0x0,
1107 .max_yc = 0x0fff,
1108 .rept_size = 8,
1109 .read_data = panjit_read_data,
1110 },
1111 #endif
1112
1113 #ifdef CONFIG_TOUCHSCREEN_USB_3M
1114 [DEVTYPE_3M] = {
1115 .min_xc = 0x0,
1116 .max_xc = 0x4000,
1117 .min_yc = 0x0,
1118 .max_yc = 0x4000,
1119 .rept_size = 11,
1120 .read_data = mtouch_read_data,
1121 .init = mtouch_init,
1122 },
1123 #endif
1124
1125 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
1126 [DEVTYPE_ITM] = {
1127 .min_xc = 0x0,
1128 .max_xc = 0x0fff,
1129 .min_yc = 0x0,
1130 .max_yc = 0x0fff,
1131 .max_press = 0xff,
1132 .rept_size = 8,
1133 .read_data = itm_read_data,
1134 },
1135 #endif
1136
1137 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
1138 [DEVTYPE_ETURBO] = {
1139 .min_xc = 0x0,
1140 .max_xc = 0x07ff,
1141 .min_yc = 0x0,
1142 .max_yc = 0x07ff,
1143 .rept_size = 8,
1144 .process_pkt = usbtouch_process_multi,
1145 .get_pkt_len = eturbo_get_pkt_len,
1146 .read_data = eturbo_read_data,
1147 },
1148 #endif
1149
1150 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
1151 [DEVTYPE_GUNZE] = {
1152 .min_xc = 0x0,
1153 .max_xc = 0x0fff,
1154 .min_yc = 0x0,
1155 .max_yc = 0x0fff,
1156 .rept_size = 4,
1157 .read_data = gunze_read_data,
1158 },
1159 #endif
1160
1161 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
1162 [DEVTYPE_DMC_TSC10] = {
1163 .min_xc = 0x0,
1164 .max_xc = 0x03ff,
1165 .min_yc = 0x0,
1166 .max_yc = 0x03ff,
1167 .rept_size = 5,
1168 .init = dmc_tsc10_init,
1169 .read_data = dmc_tsc10_read_data,
1170 },
1171 #endif
1172
1173 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
1174 [DEVTYPE_IRTOUCH] = {
1175 .min_xc = 0x0,
1176 .max_xc = 0x0fff,
1177 .min_yc = 0x0,
1178 .max_yc = 0x0fff,
1179 .rept_size = 8,
1180 .read_data = irtouch_read_data,
1181 },
1182 #endif
1183
1184 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
1185 [DEVTYPE_IDEALTEK] = {
1186 .min_xc = 0x0,
1187 .max_xc = 0x0fff,
1188 .min_yc = 0x0,
1189 .max_yc = 0x0fff,
1190 .rept_size = 8,
1191 .process_pkt = usbtouch_process_multi,
1192 .get_pkt_len = idealtek_get_pkt_len,
1193 .read_data = idealtek_read_data,
1194 },
1195 #endif
1196
1197 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
1198 [DEVTYPE_GENERAL_TOUCH] = {
1199 .min_xc = 0x0,
1200 .max_xc = 0x7fff,
1201 .min_yc = 0x0,
1202 .max_yc = 0x7fff,
1203 .rept_size = 7,
1204 .read_data = general_touch_read_data,
1205 },
1206 #endif
1207
1208 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
1209 [DEVTYPE_GOTOP] = {
1210 .min_xc = 0x0,
1211 .max_xc = 0x03ff,
1212 .min_yc = 0x0,
1213 .max_yc = 0x03ff,
1214 .rept_size = 4,
1215 .read_data = gotop_read_data,
1216 },
1217 #endif
1218
1219 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
1220 [DEVTYPE_JASTEC] = {
1221 .min_xc = 0x0,
1222 .max_xc = 0x0fff,
1223 .min_yc = 0x0,
1224 .max_yc = 0x0fff,
1225 .rept_size = 4,
1226 .read_data = jastec_read_data,
1227 },
1228 #endif
1229
1230 #ifdef CONFIG_TOUCHSCREEN_USB_E2I
1231 [DEVTYPE_E2I] = {
1232 .min_xc = 0x0,
1233 .max_xc = 0x7fff,
1234 .min_yc = 0x0,
1235 .max_yc = 0x7fff,
1236 .rept_size = 6,
1237 .init = e2i_init,
1238 .read_data = e2i_read_data,
1239 },
1240 #endif
1241
1242 #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
1243 [DEVTYPE_ZYTRONIC] = {
1244 .min_xc = 0x0,
1245 .max_xc = 0x03ff,
1246 .min_yc = 0x0,
1247 .max_yc = 0x03ff,
1248 .rept_size = 5,
1249 .read_data = zytronic_read_data,
1250 .irq_always = true,
1251 },
1252 #endif
1253
1254 #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
1255 [DEVTYPE_TC45USB] = {
1256 .min_xc = 0x0,
1257 .max_xc = 0x0fff,
1258 .min_yc = 0x0,
1259 .max_yc = 0x0fff,
1260 .rept_size = 5,
1261 .read_data = tc45usb_read_data,
1262 },
1263 #endif
1264
1265 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
1266 [DEVTYPE_NEXIO] = {
1267 .rept_size = 1024,
1268 .irq_always = true,
1269 .read_data = nexio_read_data,
1270 .alloc = nexio_alloc,
1271 .init = nexio_init,
1272 .exit = nexio_exit,
1273 },
1274 #endif
1275 #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
1276 [DEVTYPE_ETOUCH] = {
1277 .min_xc = 0x0,
1278 .max_xc = 0x07ff,
1279 .min_yc = 0x0,
1280 .max_yc = 0x07ff,
1281 .rept_size = 16,
1282 .process_pkt = usbtouch_process_multi,
1283 .get_pkt_len = etouch_get_pkt_len,
1284 .read_data = etouch_read_data,
1285 },
1286 #endif
1287 };
1288
1289
1290 /*****************************************************************************
1291 * Generic Part
1292 */
1293 static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
1294 unsigned char *pkt, int len)
1295 {
1296 struct usbtouch_device_info *type = usbtouch->type;
1297
1298 if (!type->read_data(usbtouch, pkt))
1299 return;
1300
1301 input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
1302
1303 if (swap_xy) {
1304 input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
1305 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
1306 } else {
1307 input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
1308 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
1309 }
1310 if (type->max_press)
1311 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
1312 input_sync(usbtouch->input);
1313 }
1314
1315
1316 #ifdef MULTI_PACKET
1317 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1318 unsigned char *pkt, int len)
1319 {
1320 unsigned char *buffer;
1321 int pkt_len, pos, buf_len, tmp;
1322
1323 /* process buffer */
1324 if (unlikely(usbtouch->buf_len)) {
1325 /* try to get size */
1326 pkt_len = usbtouch->type->get_pkt_len(
1327 usbtouch->buffer, usbtouch->buf_len);
1328
1329 /* drop? */
1330 if (unlikely(!pkt_len))
1331 goto out_flush_buf;
1332
1333 /* need to append -pkt_len bytes before able to get size */
1334 if (unlikely(pkt_len < 0)) {
1335 int append = -pkt_len;
1336 if (unlikely(append > len))
1337 append = len;
1338 if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
1339 goto out_flush_buf;
1340 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
1341 usbtouch->buf_len += append;
1342
1343 pkt_len = usbtouch->type->get_pkt_len(
1344 usbtouch->buffer, usbtouch->buf_len);
1345 if (pkt_len < 0)
1346 return;
1347 }
1348
1349 /* append */
1350 tmp = pkt_len - usbtouch->buf_len;
1351 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
1352 goto out_flush_buf;
1353 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
1354 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
1355
1356 buffer = pkt + tmp;
1357 buf_len = len - tmp;
1358 } else {
1359 buffer = pkt;
1360 buf_len = len;
1361 }
1362
1363 /* loop over the received packet, process */
1364 pos = 0;
1365 while (pos < buf_len) {
1366 /* get packet len */
1367 pkt_len = usbtouch->type->get_pkt_len(buffer + pos,
1368 buf_len - pos);
1369
1370 /* unknown packet: skip one byte */
1371 if (unlikely(!pkt_len)) {
1372 pos++;
1373 continue;
1374 }
1375
1376 /* full packet: process */
1377 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
1378 usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
1379 } else {
1380 /* incomplete packet: save in buffer */
1381 memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
1382 usbtouch->buf_len = buf_len - pos;
1383 return;
1384 }
1385 pos += pkt_len;
1386 }
1387
1388 out_flush_buf:
1389 usbtouch->buf_len = 0;
1390 return;
1391 }
1392 #endif
1393
1394
1395 static void usbtouch_irq(struct urb *urb)
1396 {
1397 struct usbtouch_usb *usbtouch = urb->context;
1398 struct device *dev = &usbtouch->interface->dev;
1399 int retval;
1400
1401 switch (urb->status) {
1402 case 0:
1403 /* success */
1404 break;
1405 case -ETIME:
1406 /* this urb is timing out */
1407 dev_dbg(dev,
1408 "%s - urb timed out - was the device unplugged?\n",
1409 __func__);
1410 return;
1411 case -ECONNRESET:
1412 case -ENOENT:
1413 case -ESHUTDOWN:
1414 case -EPIPE:
1415 /* this urb is terminated, clean up */
1416 dev_dbg(dev, "%s - urb shutting down with status: %d\n",
1417 __func__, urb->status);
1418 return;
1419 default:
1420 dev_dbg(dev, "%s - nonzero urb status received: %d\n",
1421 __func__, urb->status);
1422 goto exit;
1423 }
1424
1425 usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
1426
1427 exit:
1428 usb_mark_last_busy(interface_to_usbdev(usbtouch->interface));
1429 retval = usb_submit_urb(urb, GFP_ATOMIC);
1430 if (retval)
1431 dev_err(dev, "%s - usb_submit_urb failed with result: %d\n",
1432 __func__, retval);
1433 }
1434
1435 static int usbtouch_open(struct input_dev *input)
1436 {
1437 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1438 int r;
1439
1440 usbtouch->irq->dev = interface_to_usbdev(usbtouch->interface);
1441
1442 r = usb_autopm_get_interface(usbtouch->interface) ? -EIO : 0;
1443 if (r < 0)
1444 goto out;
1445
1446 if (!usbtouch->type->irq_always) {
1447 if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) {
1448 r = -EIO;
1449 goto out_put;
1450 }
1451 }
1452
1453 usbtouch->interface->needs_remote_wakeup = 1;
1454 out_put:
1455 usb_autopm_put_interface(usbtouch->interface);
1456 out:
1457 return r;
1458 }
1459
1460 static void usbtouch_close(struct input_dev *input)
1461 {
1462 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1463 int r;
1464
1465 if (!usbtouch->type->irq_always)
1466 usb_kill_urb(usbtouch->irq);
1467 r = usb_autopm_get_interface(usbtouch->interface);
1468 usbtouch->interface->needs_remote_wakeup = 0;
1469 if (!r)
1470 usb_autopm_put_interface(usbtouch->interface);
1471 }
1472
1473 static int usbtouch_suspend
1474 (struct usb_interface *intf, pm_message_t message)
1475 {
1476 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1477
1478 usb_kill_urb(usbtouch->irq);
1479
1480 return 0;
1481 }
1482
1483 static int usbtouch_resume(struct usb_interface *intf)
1484 {
1485 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1486 struct input_dev *input = usbtouch->input;
1487 int result = 0;
1488
1489 mutex_lock(&input->mutex);
1490 if (input->users || usbtouch->type->irq_always)
1491 result = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1492 mutex_unlock(&input->mutex);
1493
1494 return result;
1495 }
1496
1497 static int usbtouch_reset_resume(struct usb_interface *intf)
1498 {
1499 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1500 struct input_dev *input = usbtouch->input;
1501 int err = 0;
1502
1503 /* reinit the device */
1504 if (usbtouch->type->init) {
1505 err = usbtouch->type->init(usbtouch);
1506 if (err) {
1507 dev_dbg(&intf->dev,
1508 "%s - type->init() failed, err: %d\n",
1509 __func__, err);
1510 return err;
1511 }
1512 }
1513
1514 /* restart IO if needed */
1515 mutex_lock(&input->mutex);
1516 if (input->users)
1517 err = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1518 mutex_unlock(&input->mutex);
1519
1520 return err;
1521 }
1522
1523 static void usbtouch_free_buffers(struct usb_device *udev,
1524 struct usbtouch_usb *usbtouch)
1525 {
1526 usb_free_coherent(udev, usbtouch->type->rept_size,
1527 usbtouch->data, usbtouch->data_dma);
1528 kfree(usbtouch->buffer);
1529 }
1530
1531 static struct usb_endpoint_descriptor *
1532 usbtouch_get_input_endpoint(struct usb_host_interface *interface)
1533 {
1534 int i;
1535
1536 for (i = 0; i < interface->desc.bNumEndpoints; i++)
1537 if (usb_endpoint_dir_in(&interface->endpoint[i].desc))
1538 return &interface->endpoint[i].desc;
1539
1540 return NULL;
1541 }
1542
1543 static int usbtouch_probe(struct usb_interface *intf,
1544 const struct usb_device_id *id)
1545 {
1546 struct usbtouch_usb *usbtouch;
1547 struct input_dev *input_dev;
1548 struct usb_endpoint_descriptor *endpoint;
1549 struct usb_device *udev = interface_to_usbdev(intf);
1550 struct usbtouch_device_info *type;
1551 int err = -ENOMEM;
1552
1553 /* some devices are ignored */
1554 if (id->driver_info == DEVTYPE_IGNORE)
1555 return -ENODEV;
1556
1557 endpoint = usbtouch_get_input_endpoint(intf->cur_altsetting);
1558 if (!endpoint)
1559 return -ENXIO;
1560
1561 usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
1562 input_dev = input_allocate_device();
1563 if (!usbtouch || !input_dev)
1564 goto out_free;
1565
1566 type = &usbtouch_dev_info[id->driver_info];
1567 usbtouch->type = type;
1568 if (!type->process_pkt)
1569 type->process_pkt = usbtouch_process_pkt;
1570
1571 usbtouch->data = usb_alloc_coherent(udev, type->rept_size,
1572 GFP_KERNEL, &usbtouch->data_dma);
1573 if (!usbtouch->data)
1574 goto out_free;
1575
1576 if (type->get_pkt_len) {
1577 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
1578 if (!usbtouch->buffer)
1579 goto out_free_buffers;
1580 }
1581
1582 usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
1583 if (!usbtouch->irq) {
1584 dev_dbg(&intf->dev,
1585 "%s - usb_alloc_urb failed: usbtouch->irq\n", __func__);
1586 goto out_free_buffers;
1587 }
1588
1589 usbtouch->interface = intf;
1590 usbtouch->input = input_dev;
1591
1592 if (udev->manufacturer)
1593 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
1594
1595 if (udev->product) {
1596 if (udev->manufacturer)
1597 strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
1598 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
1599 }
1600
1601 if (!strlen(usbtouch->name))
1602 snprintf(usbtouch->name, sizeof(usbtouch->name),
1603 "USB Touchscreen %04x:%04x",
1604 le16_to_cpu(udev->descriptor.idVendor),
1605 le16_to_cpu(udev->descriptor.idProduct));
1606
1607 usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
1608 strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
1609
1610 input_dev->name = usbtouch->name;
1611 input_dev->phys = usbtouch->phys;
1612 usb_to_input_id(udev, &input_dev->id);
1613 input_dev->dev.parent = &intf->dev;
1614
1615 input_set_drvdata(input_dev, usbtouch);
1616
1617 input_dev->open = usbtouch_open;
1618 input_dev->close = usbtouch_close;
1619
1620 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1621 input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
1622 input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0);
1623 input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0);
1624 if (type->max_press)
1625 input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press,
1626 type->max_press, 0, 0);
1627
1628 if (usb_endpoint_type(endpoint) == USB_ENDPOINT_XFER_INT)
1629 usb_fill_int_urb(usbtouch->irq, udev,
1630 usb_rcvintpipe(udev, endpoint->bEndpointAddress),
1631 usbtouch->data, type->rept_size,
1632 usbtouch_irq, usbtouch, endpoint->bInterval);
1633 else
1634 usb_fill_bulk_urb(usbtouch->irq, udev,
1635 usb_rcvbulkpipe(udev, endpoint->bEndpointAddress),
1636 usbtouch->data, type->rept_size,
1637 usbtouch_irq, usbtouch);
1638
1639 usbtouch->irq->dev = udev;
1640 usbtouch->irq->transfer_dma = usbtouch->data_dma;
1641 usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1642
1643 /* device specific allocations */
1644 if (type->alloc) {
1645 err = type->alloc(usbtouch);
1646 if (err) {
1647 dev_dbg(&intf->dev,
1648 "%s - type->alloc() failed, err: %d\n",
1649 __func__, err);
1650 goto out_free_urb;
1651 }
1652 }
1653
1654 /* device specific initialisation*/
1655 if (type->init) {
1656 err = type->init(usbtouch);
1657 if (err) {
1658 dev_dbg(&intf->dev,
1659 "%s - type->init() failed, err: %d\n",
1660 __func__, err);
1661 goto out_do_exit;
1662 }
1663 }
1664
1665 err = input_register_device(usbtouch->input);
1666 if (err) {
1667 dev_dbg(&intf->dev,
1668 "%s - input_register_device failed, err: %d\n",
1669 __func__, err);
1670 goto out_do_exit;
1671 }
1672
1673 usb_set_intfdata(intf, usbtouch);
1674
1675 if (usbtouch->type->irq_always) {
1676 /* this can't fail */
1677 usb_autopm_get_interface(intf);
1678 err = usb_submit_urb(usbtouch->irq, GFP_KERNEL);
1679 if (err) {
1680 usb_autopm_put_interface(intf);
1681 dev_err(&intf->dev,
1682 "%s - usb_submit_urb failed with result: %d\n",
1683 __func__, err);
1684 goto out_unregister_input;
1685 }
1686 }
1687
1688 return 0;
1689
1690 out_unregister_input:
1691 input_unregister_device(input_dev);
1692 input_dev = NULL;
1693 out_do_exit:
1694 if (type->exit)
1695 type->exit(usbtouch);
1696 out_free_urb:
1697 usb_free_urb(usbtouch->irq);
1698 out_free_buffers:
1699 usbtouch_free_buffers(udev, usbtouch);
1700 out_free:
1701 input_free_device(input_dev);
1702 kfree(usbtouch);
1703 return err;
1704 }
1705
1706 static void usbtouch_disconnect(struct usb_interface *intf)
1707 {
1708 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1709
1710 if (!usbtouch)
1711 return;
1712
1713 dev_dbg(&intf->dev,
1714 "%s - usbtouch is initialized, cleaning up\n", __func__);
1715
1716 usb_set_intfdata(intf, NULL);
1717 /* this will stop IO via close */
1718 input_unregister_device(usbtouch->input);
1719 usb_free_urb(usbtouch->irq);
1720 if (usbtouch->type->exit)
1721 usbtouch->type->exit(usbtouch);
1722 usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch);
1723 kfree(usbtouch);
1724 }
1725
1726 MODULE_DEVICE_TABLE(usb, usbtouch_devices);
1727
1728 static struct usb_driver usbtouch_driver = {
1729 .name = "usbtouchscreen",
1730 .probe = usbtouch_probe,
1731 .disconnect = usbtouch_disconnect,
1732 .suspend = usbtouch_suspend,
1733 .resume = usbtouch_resume,
1734 .reset_resume = usbtouch_reset_resume,
1735 .id_table = usbtouch_devices,
1736 .supports_autosuspend = 1,
1737 };
1738
1739 module_usb_driver(usbtouch_driver);
1740
1741 MODULE_AUTHOR(DRIVER_AUTHOR);
1742 MODULE_DESCRIPTION(DRIVER_DESC);
1743 MODULE_LICENSE("GPL");
1744
1745 MODULE_ALIAS("touchkitusb");
1746 MODULE_ALIAS("itmtouch");
1747 MODULE_ALIAS("mtouchusb");
Linux kernel - Deliverables
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