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Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / drivers / input / touchscreen / usbtouchscreen.c
blob397cb1d3f481baf16e1f298dae7653d1c83b7c54
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /******************************************************************************
3 * usbtouchscreen.c
4 * Driver for USB Touchscreens, supporting those devices:
5 * - eGalax Touchkit
6 * includes eTurboTouch CT-410/510/700
7 * - 3M/Microtouch EX II series
8 * - ITM
9 * - PanJit TouchSet
10 * - eTurboTouch
11 * - Gunze AHL61
12 * - DMC TSC-10/25
13 * - IRTOUCHSYSTEMS/UNITOP
14 * - IdealTEK URTC1000
15 * - General Touch
16 * - GoTop Super_Q2/GogoPen/PenPower tablets
17 * - JASTEC USB touch controller/DigiTech DTR-02U
18 * - Zytronic capacitive touchscreen
19 * - NEXIO/iNexio
20 * - Elo TouchSystems 2700 IntelliTouch
21 * - EasyTouch USB Dual/Multi touch controller from Data Modul
22 *
23 * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
24 * Copyright (C) by Todd E. Johnson (mtouchusb.c)
25 *
26 * Driver is based on touchkitusb.c
27 * - ITM parts are from itmtouch.c
28 * - 3M parts are from mtouchusb.c
29 * - PanJit parts are from an unmerged driver by Lanslott Gish
30 * - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged
31 * driver from Marius Vollmer
32 *
33 *****************************************************************************/
34
35 //#define DEBUG
36
37 #include <linux/kernel.h>
38 #include <linux/slab.h>
39 #include <linux/input.h>
40 #include <linux/module.h>
41 #include <linux/usb.h>
42 #include <linux/usb/input.h>
43 #include <linux/hid.h>
44 #include <linux/mutex.h>
45
46 static bool swap_xy;
47 module_param(swap_xy, bool, 0644);
48 MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
49
50 static bool hwcalib_xy;
51 module_param(hwcalib_xy, bool, 0644);
52 MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available");
53
54 /* device specifc data/functions */
55 struct usbtouch_usb;
56 struct usbtouch_device_info {
57 int min_xc, max_xc;
58 int min_yc, max_yc;
59 int min_press, max_press;
60 int rept_size;
61
62 /*
63 * Always service the USB devices irq not just when the input device is
64 * open. This is useful when devices have a watchdog which prevents us
65 * from periodically polling the device. Leave this unset unless your
66 * touchscreen device requires it, as it does consume more of the USB
67 * bandwidth.
68 */
69 bool irq_always;
70
71 void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
72
73 /*
74 * used to get the packet len. possible return values:
75 * > 0: packet len
76 * = 0: skip one byte
77 * < 0: -return value more bytes needed
78 */
79 int (*get_pkt_len) (unsigned char *pkt, int len);
80
81 int (*read_data) (struct usbtouch_usb *usbtouch, unsigned char *pkt);
82 int (*alloc) (struct usbtouch_usb *usbtouch);
83 int (*init) (struct usbtouch_usb *usbtouch);
84 void (*exit) (struct usbtouch_usb *usbtouch);
85 };
86
87 /* a usbtouch device */
88 struct usbtouch_usb {
89 unsigned char *data;
90 dma_addr_t data_dma;
91 int data_size;
92 unsigned char *buffer;
93 int buf_len;
94 struct urb *irq;
95 struct usb_interface *interface;
96 struct input_dev *input;
97 struct usbtouch_device_info *type;
98 struct mutex pm_mutex; /* serialize access to open/suspend */
99 bool is_open;
100 char name[128];
101 char phys[64];
102 void *priv;
103
104 int x, y;
105 int touch, press;
106 };
107
108
109 /* device types */
110 enum {
111 DEVTYPE_IGNORE = -1,
112 DEVTYPE_EGALAX,
113 DEVTYPE_PANJIT,
114 DEVTYPE_3M,
115 DEVTYPE_ITM,
116 DEVTYPE_ETURBO,
117 DEVTYPE_GUNZE,
118 DEVTYPE_DMC_TSC10,
119 DEVTYPE_IRTOUCH,
120 DEVTYPE_IRTOUCH_HIRES,
121 DEVTYPE_IDEALTEK,
122 DEVTYPE_GENERAL_TOUCH,
123 DEVTYPE_GOTOP,
124 DEVTYPE_JASTEC,
125 DEVTYPE_E2I,
126 DEVTYPE_ZYTRONIC,
127 DEVTYPE_TC45USB,
128 DEVTYPE_NEXIO,
129 DEVTYPE_ELO,
130 DEVTYPE_ETOUCH,
131 };
132
133 #define USB_DEVICE_HID_CLASS(vend, prod) \
134 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
135 | USB_DEVICE_ID_MATCH_DEVICE, \
136 .idVendor = (vend), \
137 .idProduct = (prod), \
138 .bInterfaceClass = USB_INTERFACE_CLASS_HID
139
140 static const struct usb_device_id usbtouch_devices[] = {
141 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
142 /* ignore the HID capable devices, handled by usbhid */
143 {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE},
144 {USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE},
145
146 /* normal device IDs */
147 {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
148 {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
149 {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
150 {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
151 {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
152 {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
153 {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
154 #endif
155
156 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
157 {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
158 {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
159 {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
160 {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
161 #endif
162
163 #ifdef CONFIG_TOUCHSCREEN_USB_3M
164 {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
165 #endif
166
167 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
168 {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
169 {USB_DEVICE(0x16e3, 0xf9e9), .driver_info = DEVTYPE_ITM},
170 #endif
171
172 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
173 {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
174 #endif
175
176 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
177 {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
178 #endif
179
180 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
181 {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
182 #endif
183
184 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
185 {USB_DEVICE(0x255e, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
186 {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
187 {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
188 {USB_DEVICE(0x6615, 0x0012), .driver_info = DEVTYPE_IRTOUCH_HIRES},
189 #endif
190
191 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
192 {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
193 #endif
194
195 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
196 {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
197 #endif
198
199 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
200 {USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP},
201 {USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP},
202 {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
203 #endif
204
205 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
206 {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
207 #endif
208
209 #ifdef CONFIG_TOUCHSCREEN_USB_E2I
210 {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
211 #endif
212
213 #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
214 {USB_DEVICE(0x14c8, 0x0003), .driver_info = DEVTYPE_ZYTRONIC},
215 #endif
216
217 #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
218 /* TC5UH */
219 {USB_DEVICE(0x0664, 0x0309), .driver_info = DEVTYPE_TC45USB},
220 /* TC4UM */
221 {USB_DEVICE(0x0664, 0x0306), .driver_info = DEVTYPE_TC45USB},
222 #endif
223
224 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
225 /* data interface only */
226 {USB_DEVICE_AND_INTERFACE_INFO(0x10f0, 0x2002, 0x0a, 0x00, 0x00),
227 .driver_info = DEVTYPE_NEXIO},
228 {USB_DEVICE_AND_INTERFACE_INFO(0x1870, 0x0001, 0x0a, 0x00, 0x00),
229 .driver_info = DEVTYPE_NEXIO},
230 #endif
231
232 #ifdef CONFIG_TOUCHSCREEN_USB_ELO
233 {USB_DEVICE(0x04e7, 0x0020), .driver_info = DEVTYPE_ELO},
234 #endif
235
236 #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
237 {USB_DEVICE(0x7374, 0x0001), .driver_info = DEVTYPE_ETOUCH},
238 #endif
239
240 {}
241 };
242
243
244 /*****************************************************************************
245 * e2i Part
246 */
247
248 #ifdef CONFIG_TOUCHSCREEN_USB_E2I
249 static int e2i_init(struct usbtouch_usb *usbtouch)
250 {
251 int ret;
252 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
253
254 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
255 0x01, 0x02, 0x0000, 0x0081,
256 NULL, 0, USB_CTRL_SET_TIMEOUT);
257
258 dev_dbg(&usbtouch->interface->dev,
259 "%s - usb_control_msg - E2I_RESET - bytes|err: %d\n",
260 __func__, ret);
261 return ret;
262 }
263
264 static int e2i_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
265 {
266 int tmp = (pkt[0] << 8) | pkt[1];
267 dev->x = (pkt[2] << 8) | pkt[3];
268 dev->y = (pkt[4] << 8) | pkt[5];
269
270 tmp = tmp - 0xA000;
271 dev->touch = (tmp > 0);
272 dev->press = (tmp > 0 ? tmp : 0);
273
274 return 1;
275 }
276 #endif
277
278
279 /*****************************************************************************
280 * eGalax part
281 */
282
283 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
284
285 #ifndef MULTI_PACKET
286 #define MULTI_PACKET
287 #endif
288
289 #define EGALAX_PKT_TYPE_MASK 0xFE
290 #define EGALAX_PKT_TYPE_REPT 0x80
291 #define EGALAX_PKT_TYPE_DIAG 0x0A
292
293 static int egalax_init(struct usbtouch_usb *usbtouch)
294 {
295 int ret, i;
296 unsigned char *buf;
297 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
298
299 /*
300 * An eGalax diagnostic packet kicks the device into using the right
301 * protocol. We send a "check active" packet. The response will be
302 * read later and ignored.
303 */
304
305 buf = kmalloc(3, GFP_KERNEL);
306 if (!buf)
307 return -ENOMEM;
308
309 buf[0] = EGALAX_PKT_TYPE_DIAG;
310 buf[1] = 1; /* length */
311 buf[2] = 'A'; /* command - check active */
312
313 for (i = 0; i < 3; i++) {
314 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
315 0,
316 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
317 0, 0, buf, 3,
318 USB_CTRL_SET_TIMEOUT);
319 if (ret >= 0) {
320 ret = 0;
321 break;
322 }
323 if (ret != -EPIPE)
324 break;
325 }
326
327 kfree(buf);
328
329 return ret;
330 }
331
332 static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
333 {
334 if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT)
335 return 0;
336
337 dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F);
338 dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F);
339 dev->touch = pkt[0] & 0x01;
340
341 return 1;
342 }
343
344 static int egalax_get_pkt_len(unsigned char *buf, int len)
345 {
346 switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
347 case EGALAX_PKT_TYPE_REPT:
348 return 5;
349
350 case EGALAX_PKT_TYPE_DIAG:
351 if (len < 2)
352 return -1;
353
354 return buf[1] + 2;
355 }
356
357 return 0;
358 }
359 #endif
360
361 /*****************************************************************************
362 * EasyTouch part
363 */
364
365 #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
366
367 #ifndef MULTI_PACKET
368 #define MULTI_PACKET
369 #endif
370
371 #define ETOUCH_PKT_TYPE_MASK 0xFE
372 #define ETOUCH_PKT_TYPE_REPT 0x80
373 #define ETOUCH_PKT_TYPE_REPT2 0xB0
374 #define ETOUCH_PKT_TYPE_DIAG 0x0A
375
376 static int etouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
377 {
378 if ((pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT &&
379 (pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT2)
380 return 0;
381
382 dev->x = ((pkt[1] & 0x1F) << 7) | (pkt[2] & 0x7F);
383 dev->y = ((pkt[3] & 0x1F) << 7) | (pkt[4] & 0x7F);
384 dev->touch = pkt[0] & 0x01;
385
386 return 1;
387 }
388
389 static int etouch_get_pkt_len(unsigned char *buf, int len)
390 {
391 switch (buf[0] & ETOUCH_PKT_TYPE_MASK) {
392 case ETOUCH_PKT_TYPE_REPT:
393 case ETOUCH_PKT_TYPE_REPT2:
394 return 5;
395
396 case ETOUCH_PKT_TYPE_DIAG:
397 if (len < 2)
398 return -1;
399
400 return buf[1] + 2;
401 }
402
403 return 0;
404 }
405 #endif
406
407 /*****************************************************************************
408 * PanJit Part
409 */
410 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
411 static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
412 {
413 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
414 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
415 dev->touch = pkt[0] & 0x01;
416
417 return 1;
418 }
419 #endif
420
421
422 /*****************************************************************************
423 * 3M/Microtouch Part
424 */
425 #ifdef CONFIG_TOUCHSCREEN_USB_3M
426
427 #define MTOUCHUSB_ASYNC_REPORT 1
428 #define MTOUCHUSB_RESET 7
429 #define MTOUCHUSB_REQ_CTRLLR_ID 10
430
431 #define MTOUCHUSB_REQ_CTRLLR_ID_LEN 16
432
433 static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
434 {
435 if (hwcalib_xy) {
436 dev->x = (pkt[4] << 8) | pkt[3];
437 dev->y = 0xffff - ((pkt[6] << 8) | pkt[5]);
438 } else {
439 dev->x = (pkt[8] << 8) | pkt[7];
440 dev->y = (pkt[10] << 8) | pkt[9];
441 }
442 dev->touch = (pkt[2] & 0x40) ? 1 : 0;
443
444 return 1;
445 }
446
447 struct mtouch_priv {
448 u8 fw_rev_major;
449 u8 fw_rev_minor;
450 };
451
452 static ssize_t mtouch_firmware_rev_show(struct device *dev,
453 struct device_attribute *attr, char *output)
454 {
455 struct usb_interface *intf = to_usb_interface(dev);
456 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
457 struct mtouch_priv *priv = usbtouch->priv;
458
459 return scnprintf(output, PAGE_SIZE, "%1x.%1x\n",
460 priv->fw_rev_major, priv->fw_rev_minor);
461 }
462 static DEVICE_ATTR(firmware_rev, 0444, mtouch_firmware_rev_show, NULL);
463
464 static struct attribute *mtouch_attrs[] = {
465 &dev_attr_firmware_rev.attr,
466 NULL
467 };
468
469 static const struct attribute_group mtouch_attr_group = {
470 .attrs = mtouch_attrs,
471 };
472
473 static int mtouch_get_fw_revision(struct usbtouch_usb *usbtouch)
474 {
475 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
476 struct mtouch_priv *priv = usbtouch->priv;
477 u8 *buf;
478 int ret;
479
480 buf = kzalloc(MTOUCHUSB_REQ_CTRLLR_ID_LEN, GFP_NOIO);
481 if (!buf)
482 return -ENOMEM;
483
484 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
485 MTOUCHUSB_REQ_CTRLLR_ID,
486 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
487 0, 0, buf, MTOUCHUSB_REQ_CTRLLR_ID_LEN,
488 USB_CTRL_SET_TIMEOUT);
489 if (ret != MTOUCHUSB_REQ_CTRLLR_ID_LEN) {
490 dev_warn(&usbtouch->interface->dev,
491 "Failed to read FW rev: %d\n", ret);
492 ret = ret < 0 ? ret : -EIO;
493 goto free;
494 }
495
496 priv->fw_rev_major = buf[3];
497 priv->fw_rev_minor = buf[4];
498
499 ret = 0;
500
501 free:
502 kfree(buf);
503 return ret;
504 }
505
506 static int mtouch_alloc(struct usbtouch_usb *usbtouch)
507 {
508 int ret;
509
510 usbtouch->priv = kmalloc(sizeof(struct mtouch_priv), GFP_KERNEL);
511 if (!usbtouch->priv)
512 return -ENOMEM;
513
514 ret = sysfs_create_group(&usbtouch->interface->dev.kobj,
515 &mtouch_attr_group);
516 if (ret) {
517 kfree(usbtouch->priv);
518 usbtouch->priv = NULL;
519 return ret;
520 }
521
522 return 0;
523 }
524
525 static int mtouch_init(struct usbtouch_usb *usbtouch)
526 {
527 int ret, i;
528 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
529
530 ret = mtouch_get_fw_revision(usbtouch);
531 if (ret)
532 return ret;
533
534 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
535 MTOUCHUSB_RESET,
536 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
537 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
538 dev_dbg(&usbtouch->interface->dev,
539 "%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d\n",
540 __func__, ret);
541 if (ret < 0)
542 return ret;
543 msleep(150);
544
545 for (i = 0; i < 3; i++) {
546 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
547 MTOUCHUSB_ASYNC_REPORT,
548 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
549 1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
550 dev_dbg(&usbtouch->interface->dev,
551 "%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d\n",
552 __func__, ret);
553 if (ret >= 0)
554 break;
555 if (ret != -EPIPE)
556 return ret;
557 }
558
559 /* Default min/max xy are the raw values, override if using hw-calib */
560 if (hwcalib_xy) {
561 input_set_abs_params(usbtouch->input, ABS_X, 0, 0xffff, 0, 0);
562 input_set_abs_params(usbtouch->input, ABS_Y, 0, 0xffff, 0, 0);
563 }
564
565 return 0;
566 }
567
568 static void mtouch_exit(struct usbtouch_usb *usbtouch)
569 {
570 struct mtouch_priv *priv = usbtouch->priv;
571
572 sysfs_remove_group(&usbtouch->interface->dev.kobj, &mtouch_attr_group);
573 kfree(priv);
574 }
575 #endif
576
577
578 /*****************************************************************************
579 * ITM Part
580 */
581 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
582 static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
583 {
584 int touch;
585 /*
586 * ITM devices report invalid x/y data if not touched.
587 * if the screen was touched before but is not touched any more
588 * report touch as 0 with the last valid x/y data once. then stop
589 * reporting data until touched again.
590 */
591 dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F);
592
593 touch = ~pkt[7] & 0x20;
594 if (!touch) {
595 if (dev->touch) {
596 dev->touch = 0;
597 return 1;
598 }
599
600 return 0;
601 }
602
603 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
604 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
605 dev->touch = touch;
606
607 return 1;
608 }
609 #endif
610
611
612 /*****************************************************************************
613 * eTurboTouch part
614 */
615 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
616 #ifndef MULTI_PACKET
617 #define MULTI_PACKET
618 #endif
619 static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
620 {
621 unsigned int shift;
622
623 /* packets should start with sync */
624 if (!(pkt[0] & 0x80))
625 return 0;
626
627 shift = (6 - (pkt[0] & 0x03));
628 dev->x = ((pkt[3] << 7) | pkt[4]) >> shift;
629 dev->y = ((pkt[1] << 7) | pkt[2]) >> shift;
630 dev->touch = (pkt[0] & 0x10) ? 1 : 0;
631
632 return 1;
633 }
634
635 static int eturbo_get_pkt_len(unsigned char *buf, int len)
636 {
637 if (buf[0] & 0x80)
638 return 5;
639 if (buf[0] == 0x01)
640 return 3;
641 return 0;
642 }
643 #endif
644
645
646 /*****************************************************************************
647 * Gunze part
648 */
649 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
650 static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
651 {
652 if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
653 return 0;
654
655 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F);
656 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F);
657 dev->touch = pkt[0] & 0x20;
658
659 return 1;
660 }
661 #endif
662
663 /*****************************************************************************
664 * DMC TSC-10/25 Part
665 *
666 * Documentation about the controller and it's protocol can be found at
667 * http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf
668 * http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf
669 */
670 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
671
672 /* supported data rates. currently using 130 */
673 #define TSC10_RATE_POINT 0x50
674 #define TSC10_RATE_30 0x40
675 #define TSC10_RATE_50 0x41
676 #define TSC10_RATE_80 0x42
677 #define TSC10_RATE_100 0x43
678 #define TSC10_RATE_130 0x44
679 #define TSC10_RATE_150 0x45
680
681 /* commands */
682 #define TSC10_CMD_RESET 0x55
683 #define TSC10_CMD_RATE 0x05
684 #define TSC10_CMD_DATA1 0x01
685
686 static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
687 {
688 struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
689 int ret = -ENOMEM;
690 unsigned char *buf;
691
692 buf = kmalloc(2, GFP_NOIO);
693 if (!buf)
694 goto err_nobuf;
695 /* reset */
696 buf[0] = buf[1] = 0xFF;
697 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
698 TSC10_CMD_RESET,
699 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
700 0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
701 if (ret < 0)
702 goto err_out;
703 if (buf[0] != 0x06) {
704 ret = -ENODEV;
705 goto err_out;
706 }
707
708 /* TSC-25 data sheet specifies a delay after the RESET command */
709 msleep(150);
710
711 /* set coordinate output rate */
712 buf[0] = buf[1] = 0xFF;
713 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
714 TSC10_CMD_RATE,
715 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
716 TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
717 if (ret < 0)
718 goto err_out;
719 if ((buf[0] != 0x06) && (buf[0] != 0x15 || buf[1] != 0x01)) {
720 ret = -ENODEV;
721 goto err_out;
722 }
723
724 /* start sending data */
725 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
726 TSC10_CMD_DATA1,
727 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
728 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
729 err_out:
730 kfree(buf);
731 err_nobuf:
732 return ret;
733 }
734
735
736 static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
737 {
738 dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
739 dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
740 dev->touch = pkt[0] & 0x01;
741
742 return 1;
743 }
744 #endif
745
746
747 /*****************************************************************************
748 * IRTOUCH Part
749 */
750 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
751 static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
752 {
753 dev->x = (pkt[3] << 8) | pkt[2];
754 dev->y = (pkt[5] << 8) | pkt[4];
755 dev->touch = (pkt[1] & 0x03) ? 1 : 0;
756
757 return 1;
758 }
759 #endif
760
761 /*****************************************************************************
762 * ET&T TC5UH/TC4UM part
763 */
764 #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
765 static int tc45usb_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
766 {
767 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
768 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
769 dev->touch = pkt[0] & 0x01;
770
771 return 1;
772 }
773 #endif
774
775 /*****************************************************************************
776 * IdealTEK URTC1000 Part
777 */
778 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
779 #ifndef MULTI_PACKET
780 #define MULTI_PACKET
781 #endif
782 static int idealtek_get_pkt_len(unsigned char *buf, int len)
783 {
784 if (buf[0] & 0x80)
785 return 5;
786 if (buf[0] == 0x01)
787 return len;
788 return 0;
789 }
790
791 static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
792 {
793 switch (pkt[0] & 0x98) {
794 case 0x88:
795 /* touch data in IdealTEK mode */
796 dev->x = (pkt[1] << 5) | (pkt[2] >> 2);
797 dev->y = (pkt[3] << 5) | (pkt[4] >> 2);
798 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
799 return 1;
800
801 case 0x98:
802 /* touch data in MT emulation mode */
803 dev->x = (pkt[2] << 5) | (pkt[1] >> 2);
804 dev->y = (pkt[4] << 5) | (pkt[3] >> 2);
805 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
806 return 1;
807
808 default:
809 return 0;
810 }
811 }
812 #endif
813
814 /*****************************************************************************
815 * General Touch Part
816 */
817 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
818 static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
819 {
820 dev->x = (pkt[2] << 8) | pkt[1];
821 dev->y = (pkt[4] << 8) | pkt[3];
822 dev->press = pkt[5] & 0xff;
823 dev->touch = pkt[0] & 0x01;
824
825 return 1;
826 }
827 #endif
828
829 /*****************************************************************************
830 * GoTop Part
831 */
832 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
833 static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
834 {
835 dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
836 dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
837 dev->touch = pkt[0] & 0x01;
838
839 return 1;
840 }
841 #endif
842
843 /*****************************************************************************
844 * JASTEC Part
845 */
846 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
847 static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
848 {
849 dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f);
850 dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f);
851 dev->touch = (pkt[0] & 0x40) >> 6;
852
853 return 1;
854 }
855 #endif
856
857 /*****************************************************************************
858 * Zytronic Part
859 */
860 #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
861 static int zytronic_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
862 {
863 struct usb_interface *intf = dev->interface;
864
865 switch (pkt[0]) {
866 case 0x3A: /* command response */
867 dev_dbg(&intf->dev, "%s: Command response %d\n", __func__, pkt[1]);
868 break;
869
870 case 0xC0: /* down */
871 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
872 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
873 dev->touch = 1;
874 dev_dbg(&intf->dev, "%s: down %d,%d\n", __func__, dev->x, dev->y);
875 return 1;
876
877 case 0x80: /* up */
878 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
879 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
880 dev->touch = 0;
881 dev_dbg(&intf->dev, "%s: up %d,%d\n", __func__, dev->x, dev->y);
882 return 1;
883
884 default:
885 dev_dbg(&intf->dev, "%s: Unknown return %d\n", __func__, pkt[0]);
886 break;
887 }
888
889 return 0;
890 }
891 #endif
892
893 /*****************************************************************************
894 * NEXIO Part
895 */
896 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
897
898 #define NEXIO_TIMEOUT 5000
899 #define NEXIO_BUFSIZE 1024
900 #define NEXIO_THRESHOLD 50
901
902 struct nexio_priv {
903 struct urb *ack;
904 unsigned char *ack_buf;
905 };
906
907 struct nexio_touch_packet {
908 u8 flags; /* 0xe1 = touch, 0xe1 = release */
909 __be16 data_len; /* total bytes of touch data */
910 __be16 x_len; /* bytes for X axis */
911 __be16 y_len; /* bytes for Y axis */
912 u8 data[];
913 } __attribute__ ((packed));
914
915 static unsigned char nexio_ack_pkt[2] = { 0xaa, 0x02 };
916 static unsigned char nexio_init_pkt[4] = { 0x82, 0x04, 0x0a, 0x0f };
917
918 static void nexio_ack_complete(struct urb *urb)
919 {
920 }
921
922 static int nexio_alloc(struct usbtouch_usb *usbtouch)
923 {
924 struct nexio_priv *priv;
925 int ret = -ENOMEM;
926
927 usbtouch->priv = kmalloc(sizeof(struct nexio_priv), GFP_KERNEL);
928 if (!usbtouch->priv)
929 goto out_buf;
930
931 priv = usbtouch->priv;
932
933 priv->ack_buf = kmemdup(nexio_ack_pkt, sizeof(nexio_ack_pkt),
934 GFP_KERNEL);
935 if (!priv->ack_buf)
936 goto err_priv;
937
938 priv->ack = usb_alloc_urb(0, GFP_KERNEL);
939 if (!priv->ack) {
940 dev_dbg(&usbtouch->interface->dev,
941 "%s - usb_alloc_urb failed: usbtouch->ack\n", __func__);
942 goto err_ack_buf;
943 }
944
945 return 0;
946
947 err_ack_buf:
948 kfree(priv->ack_buf);
949 err_priv:
950 kfree(priv);
951 out_buf:
952 return ret;
953 }
954
955 static int nexio_init(struct usbtouch_usb *usbtouch)
956 {
957 struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
958 struct usb_host_interface *interface = usbtouch->interface->cur_altsetting;
959 struct nexio_priv *priv = usbtouch->priv;
960 int ret = -ENOMEM;
961 int actual_len, i;
962 unsigned char *buf;
963 char *firmware_ver = NULL, *device_name = NULL;
964 int input_ep = 0, output_ep = 0;
965
966 /* find first input and output endpoint */
967 for (i = 0; i < interface->desc.bNumEndpoints; i++) {
968 if (!input_ep &&
969 usb_endpoint_dir_in(&interface->endpoint[i].desc))
970 input_ep = interface->endpoint[i].desc.bEndpointAddress;
971 if (!output_ep &&
972 usb_endpoint_dir_out(&interface->endpoint[i].desc))
973 output_ep = interface->endpoint[i].desc.bEndpointAddress;
974 }
975 if (!input_ep || !output_ep)
976 return -ENXIO;
977
978 buf = kmalloc(NEXIO_BUFSIZE, GFP_NOIO);
979 if (!buf)
980 goto out_buf;
981
982 /* two empty reads */
983 for (i = 0; i < 2; i++) {
984 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
985 buf, NEXIO_BUFSIZE, &actual_len,
986 NEXIO_TIMEOUT);
987 if (ret < 0)
988 goto out_buf;
989 }
990
991 /* send init command */
992 memcpy(buf, nexio_init_pkt, sizeof(nexio_init_pkt));
993 ret = usb_bulk_msg(dev, usb_sndbulkpipe(dev, output_ep),
994 buf, sizeof(nexio_init_pkt), &actual_len,
995 NEXIO_TIMEOUT);
996 if (ret < 0)
997 goto out_buf;
998
999 /* read replies */
1000 for (i = 0; i < 3; i++) {
1001 memset(buf, 0, NEXIO_BUFSIZE);
1002 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
1003 buf, NEXIO_BUFSIZE, &actual_len,
1004 NEXIO_TIMEOUT);
1005 if (ret < 0 || actual_len < 1 || buf[1] != actual_len)
1006 continue;
1007 switch (buf[0]) {
1008 case 0x83: /* firmware version */
1009 if (!firmware_ver)
1010 firmware_ver = kstrdup(&buf[2], GFP_NOIO);
1011 break;
1012 case 0x84: /* device name */
1013 if (!device_name)
1014 device_name = kstrdup(&buf[2], GFP_NOIO);
1015 break;
1016 }
1017 }
1018
1019 printk(KERN_INFO "Nexio device: %s, firmware version: %s\n",
1020 device_name, firmware_ver);
1021
1022 kfree(firmware_ver);
1023 kfree(device_name);
1024
1025 usb_fill_bulk_urb(priv->ack, dev, usb_sndbulkpipe(dev, output_ep),
1026 priv->ack_buf, sizeof(nexio_ack_pkt),
1027 nexio_ack_complete, usbtouch);
1028 ret = 0;
1029
1030 out_buf:
1031 kfree(buf);
1032 return ret;
1033 }
1034
1035 static void nexio_exit(struct usbtouch_usb *usbtouch)
1036 {
1037 struct nexio_priv *priv = usbtouch->priv;
1038
1039 usb_kill_urb(priv->ack);
1040 usb_free_urb(priv->ack);
1041 kfree(priv->ack_buf);
1042 kfree(priv);
1043 }
1044
1045 static int nexio_read_data(struct usbtouch_usb *usbtouch, unsigned char *pkt)
1046 {
1047 struct nexio_touch_packet *packet = (void *) pkt;
1048 struct nexio_priv *priv = usbtouch->priv;
1049 unsigned int data_len = be16_to_cpu(packet->data_len);
1050 unsigned int x_len = be16_to_cpu(packet->x_len);
1051 unsigned int y_len = be16_to_cpu(packet->y_len);
1052 int x, y, begin_x, begin_y, end_x, end_y, w, h, ret;
1053
1054 /* got touch data? */
1055 if ((pkt[0] & 0xe0) != 0xe0)
1056 return 0;
1057
1058 if (data_len > 0xff)
1059 data_len -= 0x100;
1060 if (x_len > 0xff)
1061 x_len -= 0x80;
1062
1063 /* send ACK */
1064 ret = usb_submit_urb(priv->ack, GFP_ATOMIC);
1065
1066 if (!usbtouch->type->max_xc) {
1067 usbtouch->type->max_xc = 2 * x_len;
1068 input_set_abs_params(usbtouch->input, ABS_X,
1069 0, usbtouch->type->max_xc, 0, 0);
1070 usbtouch->type->max_yc = 2 * y_len;
1071 input_set_abs_params(usbtouch->input, ABS_Y,
1072 0, usbtouch->type->max_yc, 0, 0);
1073 }
1074 /*
1075 * The device reports state of IR sensors on X and Y axes.
1076 * Each byte represents "darkness" percentage (0-100) of one element.
1077 * 17" touchscreen reports only 64 x 52 bytes so the resolution is low.
1078 * This also means that there's a limited multi-touch capability but
1079 * it's disabled (and untested) here as there's no X driver for that.
1080 */
1081 begin_x = end_x = begin_y = end_y = -1;
1082 for (x = 0; x < x_len; x++) {
1083 if (begin_x == -1 && packet->data[x] > NEXIO_THRESHOLD) {
1084 begin_x = x;
1085 continue;
1086 }
1087 if (end_x == -1 && begin_x != -1 && packet->data[x] < NEXIO_THRESHOLD) {
1088 end_x = x - 1;
1089 for (y = x_len; y < data_len; y++) {
1090 if (begin_y == -1 && packet->data[y] > NEXIO_THRESHOLD) {
1091 begin_y = y - x_len;
1092 continue;
1093 }
1094 if (end_y == -1 &&
1095 begin_y != -1 && packet->data[y] < NEXIO_THRESHOLD) {
1096 end_y = y - 1 - x_len;
1097 w = end_x - begin_x;
1098 h = end_y - begin_y;
1099 #if 0
1100 /* multi-touch */
1101 input_report_abs(usbtouch->input,
1102 ABS_MT_TOUCH_MAJOR, max(w,h));
1103 input_report_abs(usbtouch->input,
1104 ABS_MT_TOUCH_MINOR, min(x,h));
1105 input_report_abs(usbtouch->input,
1106 ABS_MT_POSITION_X, 2*begin_x+w);
1107 input_report_abs(usbtouch->input,
1108 ABS_MT_POSITION_Y, 2*begin_y+h);
1109 input_report_abs(usbtouch->input,
1110 ABS_MT_ORIENTATION, w > h);
1111 input_mt_sync(usbtouch->input);
1112 #endif
1113 /* single touch */
1114 usbtouch->x = 2 * begin_x + w;
1115 usbtouch->y = 2 * begin_y + h;
1116 usbtouch->touch = packet->flags & 0x01;
1117 begin_y = end_y = -1;
1118 return 1;
1119 }
1120 }
1121 begin_x = end_x = -1;
1122 }
1123
1124 }
1125 return 0;
1126 }
1127 #endif
1128
1129
1130 /*****************************************************************************
1131 * ELO part
1132 */
1133
1134 #ifdef CONFIG_TOUCHSCREEN_USB_ELO
1135
1136 static int elo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
1137 {
1138 dev->x = (pkt[3] << 8) | pkt[2];
1139 dev->y = (pkt[5] << 8) | pkt[4];
1140 dev->touch = pkt[6] > 0;
1141 dev->press = pkt[6];
1142
1143 return 1;
1144 }
1145 #endif
1146
1147
1148 /*****************************************************************************
1149 * the different device descriptors
1150 */
1151 #ifdef MULTI_PACKET
1152 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1153 unsigned char *pkt, int len);
1154 #endif
1155
1156 static struct usbtouch_device_info usbtouch_dev_info[] = {
1157 #ifdef CONFIG_TOUCHSCREEN_USB_ELO
1158 [DEVTYPE_ELO] = {
1159 .min_xc = 0x0,
1160 .max_xc = 0x0fff,
1161 .min_yc = 0x0,
1162 .max_yc = 0x0fff,
1163 .max_press = 0xff,
1164 .rept_size = 8,
1165 .read_data = elo_read_data,
1166 },
1167 #endif
1168
1169 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
1170 [DEVTYPE_EGALAX] = {
1171 .min_xc = 0x0,
1172 .max_xc = 0x07ff,
1173 .min_yc = 0x0,
1174 .max_yc = 0x07ff,
1175 .rept_size = 16,
1176 .process_pkt = usbtouch_process_multi,
1177 .get_pkt_len = egalax_get_pkt_len,
1178 .read_data = egalax_read_data,
1179 .init = egalax_init,
1180 },
1181 #endif
1182
1183 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
1184 [DEVTYPE_PANJIT] = {
1185 .min_xc = 0x0,
1186 .max_xc = 0x0fff,
1187 .min_yc = 0x0,
1188 .max_yc = 0x0fff,
1189 .rept_size = 8,
1190 .read_data = panjit_read_data,
1191 },
1192 #endif
1193
1194 #ifdef CONFIG_TOUCHSCREEN_USB_3M
1195 [DEVTYPE_3M] = {
1196 .min_xc = 0x0,
1197 .max_xc = 0x4000,
1198 .min_yc = 0x0,
1199 .max_yc = 0x4000,
1200 .rept_size = 11,
1201 .read_data = mtouch_read_data,
1202 .alloc = mtouch_alloc,
1203 .init = mtouch_init,
1204 .exit = mtouch_exit,
1205 },
1206 #endif
1207
1208 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
1209 [DEVTYPE_ITM] = {
1210 .min_xc = 0x0,
1211 .max_xc = 0x0fff,
1212 .min_yc = 0x0,
1213 .max_yc = 0x0fff,
1214 .max_press = 0xff,
1215 .rept_size = 8,
1216 .read_data = itm_read_data,
1217 },
1218 #endif
1219
1220 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
1221 [DEVTYPE_ETURBO] = {
1222 .min_xc = 0x0,
1223 .max_xc = 0x07ff,
1224 .min_yc = 0x0,
1225 .max_yc = 0x07ff,
1226 .rept_size = 8,
1227 .process_pkt = usbtouch_process_multi,
1228 .get_pkt_len = eturbo_get_pkt_len,
1229 .read_data = eturbo_read_data,
1230 },
1231 #endif
1232
1233 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
1234 [DEVTYPE_GUNZE] = {
1235 .min_xc = 0x0,
1236 .max_xc = 0x0fff,
1237 .min_yc = 0x0,
1238 .max_yc = 0x0fff,
1239 .rept_size = 4,
1240 .read_data = gunze_read_data,
1241 },
1242 #endif
1243
1244 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
1245 [DEVTYPE_DMC_TSC10] = {
1246 .min_xc = 0x0,
1247 .max_xc = 0x03ff,
1248 .min_yc = 0x0,
1249 .max_yc = 0x03ff,
1250 .rept_size = 5,
1251 .init = dmc_tsc10_init,
1252 .read_data = dmc_tsc10_read_data,
1253 },
1254 #endif
1255
1256 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
1257 [DEVTYPE_IRTOUCH] = {
1258 .min_xc = 0x0,
1259 .max_xc = 0x0fff,
1260 .min_yc = 0x0,
1261 .max_yc = 0x0fff,
1262 .rept_size = 8,
1263 .read_data = irtouch_read_data,
1264 },
1265
1266 [DEVTYPE_IRTOUCH_HIRES] = {
1267 .min_xc = 0x0,
1268 .max_xc = 0x7fff,
1269 .min_yc = 0x0,
1270 .max_yc = 0x7fff,
1271 .rept_size = 8,
1272 .read_data = irtouch_read_data,
1273 },
1274 #endif
1275
1276 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
1277 [DEVTYPE_IDEALTEK] = {
1278 .min_xc = 0x0,
1279 .max_xc = 0x0fff,
1280 .min_yc = 0x0,
1281 .max_yc = 0x0fff,
1282 .rept_size = 8,
1283 .process_pkt = usbtouch_process_multi,
1284 .get_pkt_len = idealtek_get_pkt_len,
1285 .read_data = idealtek_read_data,
1286 },
1287 #endif
1288
1289 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
1290 [DEVTYPE_GENERAL_TOUCH] = {
1291 .min_xc = 0x0,
1292 .max_xc = 0x7fff,
1293 .min_yc = 0x0,
1294 .max_yc = 0x7fff,
1295 .rept_size = 7,
1296 .read_data = general_touch_read_data,
1297 },
1298 #endif
1299
1300 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
1301 [DEVTYPE_GOTOP] = {
1302 .min_xc = 0x0,
1303 .max_xc = 0x03ff,
1304 .min_yc = 0x0,
1305 .max_yc = 0x03ff,
1306 .rept_size = 4,
1307 .read_data = gotop_read_data,
1308 },
1309 #endif
1310
1311 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
1312 [DEVTYPE_JASTEC] = {
1313 .min_xc = 0x0,
1314 .max_xc = 0x0fff,
1315 .min_yc = 0x0,
1316 .max_yc = 0x0fff,
1317 .rept_size = 4,
1318 .read_data = jastec_read_data,
1319 },
1320 #endif
1321
1322 #ifdef CONFIG_TOUCHSCREEN_USB_E2I
1323 [DEVTYPE_E2I] = {
1324 .min_xc = 0x0,
1325 .max_xc = 0x7fff,
1326 .min_yc = 0x0,
1327 .max_yc = 0x7fff,
1328 .rept_size = 6,
1329 .init = e2i_init,
1330 .read_data = e2i_read_data,
1331 },
1332 #endif
1333
1334 #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
1335 [DEVTYPE_ZYTRONIC] = {
1336 .min_xc = 0x0,
1337 .max_xc = 0x03ff,
1338 .min_yc = 0x0,
1339 .max_yc = 0x03ff,
1340 .rept_size = 5,
1341 .read_data = zytronic_read_data,
1342 .irq_always = true,
1343 },
1344 #endif
1345
1346 #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
1347 [DEVTYPE_TC45USB] = {
1348 .min_xc = 0x0,
1349 .max_xc = 0x0fff,
1350 .min_yc = 0x0,
1351 .max_yc = 0x0fff,
1352 .rept_size = 5,
1353 .read_data = tc45usb_read_data,
1354 },
1355 #endif
1356
1357 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
1358 [DEVTYPE_NEXIO] = {
1359 .rept_size = 1024,
1360 .irq_always = true,
1361 .read_data = nexio_read_data,
1362 .alloc = nexio_alloc,
1363 .init = nexio_init,
1364 .exit = nexio_exit,
1365 },
1366 #endif
1367 #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
1368 [DEVTYPE_ETOUCH] = {
1369 .min_xc = 0x0,
1370 .max_xc = 0x07ff,
1371 .min_yc = 0x0,
1372 .max_yc = 0x07ff,
1373 .rept_size = 16,
1374 .process_pkt = usbtouch_process_multi,
1375 .get_pkt_len = etouch_get_pkt_len,
1376 .read_data = etouch_read_data,
1377 },
1378 #endif
1379 };
1380
1381
1382 /*****************************************************************************
1383 * Generic Part
1384 */
1385 static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
1386 unsigned char *pkt, int len)
1387 {
1388 struct usbtouch_device_info *type = usbtouch->type;
1389
1390 if (!type->read_data(usbtouch, pkt))
1391 return;
1392
1393 input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
1394
1395 if (swap_xy) {
1396 input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
1397 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
1398 } else {
1399 input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
1400 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
1401 }
1402 if (type->max_press)
1403 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
1404 input_sync(usbtouch->input);
1405 }
1406
1407
1408 #ifdef MULTI_PACKET
1409 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1410 unsigned char *pkt, int len)
1411 {
1412 unsigned char *buffer;
1413 int pkt_len, pos, buf_len, tmp;
1414
1415 /* process buffer */
1416 if (unlikely(usbtouch->buf_len)) {
1417 /* try to get size */
1418 pkt_len = usbtouch->type->get_pkt_len(
1419 usbtouch->buffer, usbtouch->buf_len);
1420
1421 /* drop? */
1422 if (unlikely(!pkt_len))
1423 goto out_flush_buf;
1424
1425 /* need to append -pkt_len bytes before able to get size */
1426 if (unlikely(pkt_len < 0)) {
1427 int append = -pkt_len;
1428 if (unlikely(append > len))
1429 append = len;
1430 if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
1431 goto out_flush_buf;
1432 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
1433 usbtouch->buf_len += append;
1434
1435 pkt_len = usbtouch->type->get_pkt_len(
1436 usbtouch->buffer, usbtouch->buf_len);
1437 if (pkt_len < 0)
1438 return;
1439 }
1440
1441 /* append */
1442 tmp = pkt_len - usbtouch->buf_len;
1443 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
1444 goto out_flush_buf;
1445 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
1446 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
1447
1448 buffer = pkt + tmp;
1449 buf_len = len - tmp;
1450 } else {
1451 buffer = pkt;
1452 buf_len = len;
1453 }
1454
1455 /* loop over the received packet, process */
1456 pos = 0;
1457 while (pos < buf_len) {
1458 /* get packet len */
1459 pkt_len = usbtouch->type->get_pkt_len(buffer + pos,
1460 buf_len - pos);
1461
1462 /* unknown packet: skip one byte */
1463 if (unlikely(!pkt_len)) {
1464 pos++;
1465 continue;
1466 }
1467
1468 /* full packet: process */
1469 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
1470 usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
1471 } else {
1472 /* incomplete packet: save in buffer */
1473 memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
1474 usbtouch->buf_len = buf_len - pos;
1475 return;
1476 }
1477 pos += pkt_len;
1478 }
1479
1480 out_flush_buf:
1481 usbtouch->buf_len = 0;
1482 return;
1483 }
1484 #endif
1485
1486
1487 static void usbtouch_irq(struct urb *urb)
1488 {
1489 struct usbtouch_usb *usbtouch = urb->context;
1490 struct device *dev = &usbtouch->interface->dev;
1491 int retval;
1492
1493 switch (urb->status) {
1494 case 0:
1495 /* success */
1496 break;
1497 case -ETIME:
1498 /* this urb is timing out */
1499 dev_dbg(dev,
1500 "%s - urb timed out - was the device unplugged?\n",
1501 __func__);
1502 return;
1503 case -ECONNRESET:
1504 case -ENOENT:
1505 case -ESHUTDOWN:
1506 case -EPIPE:
1507 /* this urb is terminated, clean up */
1508 dev_dbg(dev, "%s - urb shutting down with status: %d\n",
1509 __func__, urb->status);
1510 return;
1511 default:
1512 dev_dbg(dev, "%s - nonzero urb status received: %d\n",
1513 __func__, urb->status);
1514 goto exit;
1515 }
1516
1517 usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
1518
1519 exit:
1520 usb_mark_last_busy(interface_to_usbdev(usbtouch->interface));
1521 retval = usb_submit_urb(urb, GFP_ATOMIC);
1522 if (retval)
1523 dev_err(dev, "%s - usb_submit_urb failed with result: %d\n",
1524 __func__, retval);
1525 }
1526
1527 static int usbtouch_open(struct input_dev *input)
1528 {
1529 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1530 int r;
1531
1532 usbtouch->irq->dev = interface_to_usbdev(usbtouch->interface);
1533
1534 r = usb_autopm_get_interface(usbtouch->interface) ? -EIO : 0;
1535 if (r < 0)
1536 goto out;
1537
1538 mutex_lock(&usbtouch->pm_mutex);
1539 if (!usbtouch->type->irq_always) {
1540 if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) {
1541 r = -EIO;
1542 goto out_put;
1543 }
1544 }
1545
1546 usbtouch->interface->needs_remote_wakeup = 1;
1547 usbtouch->is_open = true;
1548 out_put:
1549 mutex_unlock(&usbtouch->pm_mutex);
1550 usb_autopm_put_interface(usbtouch->interface);
1551 out:
1552 return r;
1553 }
1554
1555 static void usbtouch_close(struct input_dev *input)
1556 {
1557 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1558 int r;
1559
1560 mutex_lock(&usbtouch->pm_mutex);
1561 if (!usbtouch->type->irq_always)
1562 usb_kill_urb(usbtouch->irq);
1563 usbtouch->is_open = false;
1564 mutex_unlock(&usbtouch->pm_mutex);
1565
1566 r = usb_autopm_get_interface(usbtouch->interface);
1567 usbtouch->interface->needs_remote_wakeup = 0;
1568 if (!r)
1569 usb_autopm_put_interface(usbtouch->interface);
1570 }
1571
1572 static int usbtouch_suspend
1573 (struct usb_interface *intf, pm_message_t message)
1574 {
1575 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1576
1577 usb_kill_urb(usbtouch->irq);
1578
1579 return 0;
1580 }
1581
1582 static int usbtouch_resume(struct usb_interface *intf)
1583 {
1584 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1585 int result = 0;
1586
1587 mutex_lock(&usbtouch->pm_mutex);
1588 if (usbtouch->is_open || usbtouch->type->irq_always)
1589 result = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1590 mutex_unlock(&usbtouch->pm_mutex);
1591
1592 return result;
1593 }
1594
1595 static int usbtouch_reset_resume(struct usb_interface *intf)
1596 {
1597 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1598 int err = 0;
1599
1600 /* reinit the device */
1601 if (usbtouch->type->init) {
1602 err = usbtouch->type->init(usbtouch);
1603 if (err) {
1604 dev_dbg(&intf->dev,
1605 "%s - type->init() failed, err: %d\n",
1606 __func__, err);
1607 return err;
1608 }
1609 }
1610
1611 /* restart IO if needed */
1612 mutex_lock(&usbtouch->pm_mutex);
1613 if (usbtouch->is_open)
1614 err = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1615 mutex_unlock(&usbtouch->pm_mutex);
1616
1617 return err;
1618 }
1619
1620 static void usbtouch_free_buffers(struct usb_device *udev,
1621 struct usbtouch_usb *usbtouch)
1622 {
1623 usb_free_coherent(udev, usbtouch->data_size,
1624 usbtouch->data, usbtouch->data_dma);
1625 kfree(usbtouch->buffer);
1626 }
1627
1628 static struct usb_endpoint_descriptor *
1629 usbtouch_get_input_endpoint(struct usb_host_interface *interface)
1630 {
1631 int i;
1632
1633 for (i = 0; i < interface->desc.bNumEndpoints; i++)
1634 if (usb_endpoint_dir_in(&interface->endpoint[i].desc))
1635 return &interface->endpoint[i].desc;
1636
1637 return NULL;
1638 }
1639
1640 static int usbtouch_probe(struct usb_interface *intf,
1641 const struct usb_device_id *id)
1642 {
1643 struct usbtouch_usb *usbtouch;
1644 struct input_dev *input_dev;
1645 struct usb_endpoint_descriptor *endpoint;
1646 struct usb_device *udev = interface_to_usbdev(intf);
1647 struct usbtouch_device_info *type;
1648 int err = -ENOMEM;
1649
1650 /* some devices are ignored */
1651 if (id->driver_info == DEVTYPE_IGNORE)
1652 return -ENODEV;
1653
1654 endpoint = usbtouch_get_input_endpoint(intf->cur_altsetting);
1655 if (!endpoint)
1656 return -ENXIO;
1657
1658 usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
1659 input_dev = input_allocate_device();
1660 if (!usbtouch || !input_dev)
1661 goto out_free;
1662
1663 mutex_init(&usbtouch->pm_mutex);
1664
1665 type = &usbtouch_dev_info[id->driver_info];
1666 usbtouch->type = type;
1667 if (!type->process_pkt)
1668 type->process_pkt = usbtouch_process_pkt;
1669
1670 usbtouch->data_size = type->rept_size;
1671 if (type->get_pkt_len) {
1672 /*
1673 * When dealing with variable-length packets we should
1674 * not request more than wMaxPacketSize bytes at once
1675 * as we do not know if there is more data coming or
1676 * we filled exactly wMaxPacketSize bytes and there is
1677 * nothing else.
1678 */
1679 usbtouch->data_size = min(usbtouch->data_size,
1680 usb_endpoint_maxp(endpoint));
1681 }
1682
1683 usbtouch->data = usb_alloc_coherent(udev, usbtouch->data_size,
1684 GFP_KERNEL, &usbtouch->data_dma);
1685 if (!usbtouch->data)
1686 goto out_free;
1687
1688 if (type->get_pkt_len) {
1689 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
1690 if (!usbtouch->buffer)
1691 goto out_free_buffers;
1692 }
1693
1694 usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
1695 if (!usbtouch->irq) {
1696 dev_dbg(&intf->dev,
1697 "%s - usb_alloc_urb failed: usbtouch->irq\n", __func__);
1698 goto out_free_buffers;
1699 }
1700
1701 usbtouch->interface = intf;
1702 usbtouch->input = input_dev;
1703
1704 if (udev->manufacturer)
1705 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
1706
1707 if (udev->product) {
1708 if (udev->manufacturer)
1709 strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
1710 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
1711 }
1712
1713 if (!strlen(usbtouch->name))
1714 snprintf(usbtouch->name, sizeof(usbtouch->name),
1715 "USB Touchscreen %04x:%04x",
1716 le16_to_cpu(udev->descriptor.idVendor),
1717 le16_to_cpu(udev->descriptor.idProduct));
1718
1719 usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
1720 strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
1721
1722 input_dev->name = usbtouch->name;
1723 input_dev->phys = usbtouch->phys;
1724 usb_to_input_id(udev, &input_dev->id);
1725 input_dev->dev.parent = &intf->dev;
1726
1727 input_set_drvdata(input_dev, usbtouch);
1728
1729 input_dev->open = usbtouch_open;
1730 input_dev->close = usbtouch_close;
1731
1732 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1733 input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
1734 input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0);
1735 input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0);
1736 if (type->max_press)
1737 input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press,
1738 type->max_press, 0, 0);
1739
1740 if (usb_endpoint_type(endpoint) == USB_ENDPOINT_XFER_INT)
1741 usb_fill_int_urb(usbtouch->irq, udev,
1742 usb_rcvintpipe(udev, endpoint->bEndpointAddress),
1743 usbtouch->data, usbtouch->data_size,
1744 usbtouch_irq, usbtouch, endpoint->bInterval);
1745 else
1746 usb_fill_bulk_urb(usbtouch->irq, udev,
1747 usb_rcvbulkpipe(udev, endpoint->bEndpointAddress),
1748 usbtouch->data, usbtouch->data_size,
1749 usbtouch_irq, usbtouch);
1750
1751 usbtouch->irq->dev = udev;
1752 usbtouch->irq->transfer_dma = usbtouch->data_dma;
1753 usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1754
1755 /* device specific allocations */
1756 if (type->alloc) {
1757 err = type->alloc(usbtouch);
1758 if (err) {
1759 dev_dbg(&intf->dev,
1760 "%s - type->alloc() failed, err: %d\n",
1761 __func__, err);
1762 goto out_free_urb;
1763 }
1764 }
1765
1766 /* device specific initialisation*/
1767 if (type->init) {
1768 err = type->init(usbtouch);
1769 if (err) {
1770 dev_dbg(&intf->dev,
1771 "%s - type->init() failed, err: %d\n",
1772 __func__, err);
1773 goto out_do_exit;
1774 }
1775 }
1776
1777 err = input_register_device(usbtouch->input);
1778 if (err) {
1779 dev_dbg(&intf->dev,
1780 "%s - input_register_device failed, err: %d\n",
1781 __func__, err);
1782 goto out_do_exit;
1783 }
1784
1785 usb_set_intfdata(intf, usbtouch);
1786
1787 if (usbtouch->type->irq_always) {
1788 /* this can't fail */
1789 usb_autopm_get_interface(intf);
1790 err = usb_submit_urb(usbtouch->irq, GFP_KERNEL);
1791 if (err) {
1792 usb_autopm_put_interface(intf);
1793 dev_err(&intf->dev,
1794 "%s - usb_submit_urb failed with result: %d\n",
1795 __func__, err);
1796 goto out_unregister_input;
1797 }
1798 }
1799
1800 return 0;
1801
1802 out_unregister_input:
1803 input_unregister_device(input_dev);
1804 input_dev = NULL;
1805 out_do_exit:
1806 if (type->exit)
1807 type->exit(usbtouch);
1808 out_free_urb:
1809 usb_free_urb(usbtouch->irq);
1810 out_free_buffers:
1811 usbtouch_free_buffers(udev, usbtouch);
1812 out_free:
1813 input_free_device(input_dev);
1814 kfree(usbtouch);
1815 return err;
1816 }
1817
1818 static void usbtouch_disconnect(struct usb_interface *intf)
1819 {
1820 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1821
1822 if (!usbtouch)
1823 return;
1824
1825 dev_dbg(&intf->dev,
1826 "%s - usbtouch is initialized, cleaning up\n", __func__);
1827
1828 usb_set_intfdata(intf, NULL);
1829 /* this will stop IO via close */
1830 input_unregister_device(usbtouch->input);
1831 usb_free_urb(usbtouch->irq);
1832 if (usbtouch->type->exit)
1833 usbtouch->type->exit(usbtouch);
1834 usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch);
1835 kfree(usbtouch);
1836 }
1837
1838 MODULE_DEVICE_TABLE(usb, usbtouch_devices);
1839
1840 static struct usb_driver usbtouch_driver = {
1841 .name = "usbtouchscreen",
1842 .probe = usbtouch_probe,
1843 .disconnect = usbtouch_disconnect,
1844 .suspend = usbtouch_suspend,
1845 .resume = usbtouch_resume,
1846 .reset_resume = usbtouch_reset_resume,
1847 .id_table = usbtouch_devices,
1848 .supports_autosuspend = 1,
1849 };
1850
1851 module_usb_driver(usbtouch_driver);
1852
1853 MODULE_AUTHOR("Daniel Ritz <daniel.ritz@gmx.ch>");
1854 MODULE_DESCRIPTION("USB Touchscreen Driver");
1855 MODULE_LICENSE("GPL");
1856
1857 MODULE_ALIAS("touchkitusb");
1858 MODULE_ALIAS("itmtouch");
1859 MODULE_ALIAS("mtouchusb");
Linux with added FPC-III support