]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - drivers/input/touchscreen/usbtouchscreen.c
projects / mirror_ubuntu-bionic-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'for-4.3/core' of git://git.kernel.dk/linux-block
[mirror_ubuntu-bionic-kernel.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/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
63 static bool swap_xy;
64 module_param(swap_xy, bool, 0644);
65 MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
66
67 static bool hwcalib_xy;
68 module_param(hwcalib_xy, bool, 0644);
69 MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available");
70
71 /* device specifc data/functions */
72 struct usbtouch_usb;
73 struct 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 */
105 struct 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 */
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_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
155 static const struct usb_device_id usbtouch_devices[] = {
156 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
157 /* ignore the HID capable devices, handled by usbhid */
158 {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE},
159 {USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE},
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
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 /* 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);
651 err_out:
652 kfree(buf);
653 err_nobuf:
654 return ret;
655 }
656
657
658 static 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
673 static 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
687 static 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
704 static 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
713 static 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
740 static 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
755 static 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
769 static 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
783 static 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
824 struct nexio_priv {
825 struct urb *ack;
826 unsigned char *ack_buf;
827 };
828
829 struct nexio_touch_packet {
830 u8 flags; /* 0xe1 = touch, 0xe1 = release */
831 __be16 data_len; /* total bytes of touch data */
832 __be16 x_len; /* bytes for X axis */
833 __be16 y_len; /* bytes for Y axis */
834 u8 data[];
835 } __attribute__ ((packed));
836
837 static unsigned char nexio_ack_pkt[2] = { 0xaa, 0x02 };
838 static unsigned char nexio_init_pkt[4] = { 0x82, 0x04, 0x0a, 0x0f };
839
840 static void nexio_ack_complete(struct urb *urb)
841 {
842 }
843
844 static 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
869 err_ack_buf:
870 kfree(priv->ack_buf);
871 err_priv:
872 kfree(priv);
873 out_buf:
874 return ret;
875 }
876
877 static 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
952 out_buf:
953 kfree(buf);
954 return ret;
955 }
956
957 static 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
967 static 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
1058 static 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
1074 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1075 unsigned char *pkt, int len);
1076 #endif
1077
1078 static 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 */
1305 static 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
1329 static 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
1400 out_flush_buf:
1401 usbtouch->buf_len = 0;
1402 return;
1403 }
1404 #endif
1405
1406
1407 static 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
1439 exit:
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
1447 static 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;
1466 out_put:
1467 usb_autopm_put_interface(usbtouch->interface);
1468 out:
1469 return r;
1470 }
1471
1472 static 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
1485 static 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
1495 static 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
1509 static 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
1535 static 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
1543 static struct usb_endpoint_descriptor *
1544 usbtouch_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
1555 static 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
1715 out_unregister_input:
1716 input_unregister_device(input_dev);
1717 input_dev = NULL;
1718 out_do_exit:
1719 if (type->exit)
1720 type->exit(usbtouch);
1721 out_free_urb:
1722 usb_free_urb(usbtouch->irq);
1723 out_free_buffers:
1724 usbtouch_free_buffers(udev, usbtouch);
1725 out_free:
1726 input_free_device(input_dev);
1727 kfree(usbtouch);
1728 return err;
1729 }
1730
1731 static 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
1751 MODULE_DEVICE_TABLE(usb, usbtouch_devices);
1752
1753 static struct usb_driver usbtouch_driver = {
1754 .name = "usbtouchscreen",
1755 .probe = usbtouch_probe,
1756 .disconnect = usbtouch_disconnect,
1757 .suspend = usbtouch_suspend,
1758 .resume = usbtouch_resume,
1759 .reset_resume = usbtouch_reset_resume,
1760 .id_table = usbtouch_devices,
1761 .supports_autosuspend = 1,
1762 };
1763
1764 module_usb_driver(usbtouch_driver);
1765
1766 MODULE_AUTHOR(DRIVER_AUTHOR);
1767 MODULE_DESCRIPTION(DRIVER_DESC);
1768 MODULE_LICENSE("GPL");
1769
1770 MODULE_ALIAS("touchkitusb");
1771 MODULE_ALIAS("itmtouch");
1772 MODULE_ALIAS("mtouchusb");
ubuntu-bionic-kernel mirror