?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Linux 4.19.133
[linux/fpc-iii.git] / drivers / hid / hid-multitouch.c
blob8baf10beb1d5d2254bfc78564b670cccd44fe525
1 /*
2 * HID driver for multitouch panels
3 *
4 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
5 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
6 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
7 * Copyright (c) 2012-2013 Red Hat, Inc
8 *
9 * This code is partly based on hid-egalax.c:
10 *
11 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
12 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
13 * Copyright (c) 2010 Canonical, Ltd.
14 *
15 * This code is partly based on hid-3m-pct.c:
16 *
17 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
18 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
19 * Copyright (c) 2010 Canonical, Ltd.
20 *
21 */
22
23 /*
24 * This program is free software; you can redistribute it and/or modify it
25 * under the terms of the GNU General Public License as published by the Free
26 * Software Foundation; either version 2 of the License, or (at your option)
27 * any later version.
28 */
29
30 /*
31 * This driver is regularly tested thanks to the test suite in hid-tools[1].
32 * Please run these regression tests before patching this module so that
33 * your patch won't break existing known devices.
34 *
35 * [1] https://gitlab.freedesktop.org/libevdev/hid-tools
36 */
37
38 #include <linux/device.h>
39 #include <linux/hid.h>
40 #include <linux/module.h>
41 #include <linux/slab.h>
42 #include <linux/input/mt.h>
43 #include <linux/jiffies.h>
44 #include <linux/string.h>
45 #include <linux/timer.h>
46
47
48 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
49 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
50 MODULE_DESCRIPTION("HID multitouch panels");
51 MODULE_LICENSE("GPL");
52
53 #include "hid-ids.h"
54
55 /* quirks to control the device */
56 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0)
57 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1)
58 #define MT_QUIRK_CYPRESS BIT(2)
59 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3)
60 #define MT_QUIRK_ALWAYS_VALID BIT(4)
61 #define MT_QUIRK_VALID_IS_INRANGE BIT(5)
62 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6)
63 #define MT_QUIRK_CONFIDENCE BIT(7)
64 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8)
65 #define MT_QUIRK_NO_AREA BIT(9)
66 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10)
67 #define MT_QUIRK_HOVERING BIT(11)
68 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12)
69 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13)
70 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14)
71 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15)
72 #define MT_QUIRK_STICKY_FINGERS BIT(16)
73 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17)
74 #define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18)
75
76 #define MT_INPUTMODE_TOUCHSCREEN 0x02
77 #define MT_INPUTMODE_TOUCHPAD 0x03
78
79 #define MT_BUTTONTYPE_CLICKPAD 0
80
81 enum latency_mode {
82 HID_LATENCY_NORMAL = 0,
83 HID_LATENCY_HIGH = 1,
84 };
85
86 #define MT_IO_FLAGS_RUNNING 0
87 #define MT_IO_FLAGS_ACTIVE_SLOTS 1
88 #define MT_IO_FLAGS_PENDING_SLOTS 2
89
90 static const bool mtrue = true; /* default for true */
91 static const bool mfalse; /* default for false */
92 static const __s32 mzero; /* default for 0 */
93
94 #define DEFAULT_TRUE ((void *)&mtrue)
95 #define DEFAULT_FALSE ((void *)&mfalse)
96 #define DEFAULT_ZERO ((void *)&mzero)
97
98 struct mt_usages {
99 struct list_head list;
100 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a;
101 __s32 *contactid; /* the device ContactID assigned to this slot */
102 bool *tip_state; /* is the touch valid? */
103 bool *inrange_state; /* is the finger in proximity of the sensor? */
104 bool *confidence_state; /* is the touch made by a finger? */
105 };
106
107 struct mt_application {
108 struct list_head list;
109 unsigned int application;
110 struct list_head mt_usages; /* mt usages list */
111
112 __s32 quirks;
113
114 __s32 *scantime; /* scantime reported */
115 __s32 scantime_logical_max; /* max value for raw scantime */
116
117 __s32 *raw_cc; /* contact count in the report */
118 int left_button_state; /* left button state */
119 unsigned int mt_flags; /* flags to pass to input-mt */
120
121 unsigned long *pending_palm_slots; /* slots where we reported palm
122 * and need to release */
123
124 __u8 num_received; /* how many contacts we received */
125 __u8 num_expected; /* expected last contact index */
126 __u8 buttons_count; /* number of physical buttons per touchpad */
127 __u8 touches_by_report; /* how many touches are present in one report:
128 * 1 means we should use a serial protocol
129 * > 1 means hybrid (multitouch) protocol
130 */
131
132 __s32 dev_time; /* the scan time provided by the device */
133 unsigned long jiffies; /* the frame's jiffies */
134 int timestamp; /* the timestamp to be sent */
135 int prev_scantime; /* scantime reported previously */
136
137 bool have_contact_count;
138 };
139
140 struct mt_class {
141 __s32 name; /* MT_CLS */
142 __s32 quirks;
143 __s32 sn_move; /* Signal/noise ratio for move events */
144 __s32 sn_width; /* Signal/noise ratio for width events */
145 __s32 sn_height; /* Signal/noise ratio for height events */
146 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
147 __u8 maxcontacts;
148 bool is_indirect; /* true for touchpads */
149 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
150 };
151
152 struct mt_report_data {
153 struct list_head list;
154 struct hid_report *report;
155 struct mt_application *application;
156 bool is_mt_collection;
157 };
158
159 struct mt_device {
160 struct mt_class mtclass; /* our mt device class */
161 struct timer_list release_timer; /* to release sticky fingers */
162 struct hid_device *hdev; /* hid_device we're attached to */
163 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */
164 __u8 inputmode_value; /* InputMode HID feature value */
165 __u8 maxcontacts;
166 bool is_buttonpad; /* is this device a button pad? */
167 bool serial_maybe; /* need to check for serial protocol */
168
169 struct list_head applications;
170 struct list_head reports;
171 };
172
173 static void mt_post_parse_default_settings(struct mt_device *td,
174 struct mt_application *app);
175 static void mt_post_parse(struct mt_device *td, struct mt_application *app);
176
177 /* classes of device behavior */
178 #define MT_CLS_DEFAULT 0x0001
179
180 #define MT_CLS_SERIAL 0x0002
181 #define MT_CLS_CONFIDENCE 0x0003
182 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
183 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
184 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
185 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
186 /* reserved 0x0008 */
187 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
188 #define MT_CLS_NSMU 0x000a
189 /* reserved 0x0010 */
190 /* reserved 0x0011 */
191 #define MT_CLS_WIN_8 0x0012
192 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
193 #define MT_CLS_WIN_8_DUAL 0x0014
194
195 /* vendor specific classes */
196 #define MT_CLS_3M 0x0101
197 /* reserved 0x0102 */
198 #define MT_CLS_EGALAX 0x0103
199 #define MT_CLS_EGALAX_SERIAL 0x0104
200 #define MT_CLS_TOPSEED 0x0105
201 #define MT_CLS_PANASONIC 0x0106
202 #define MT_CLS_FLATFROG 0x0107
203 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
204 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
205 #define MT_CLS_LG 0x010a
206 #define MT_CLS_ASUS 0x010b
207 #define MT_CLS_VTL 0x0110
208 #define MT_CLS_GOOGLE 0x0111
209 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112
210
211 #define MT_DEFAULT_MAXCONTACT 10
212 #define MT_MAX_MAXCONTACT 250
213
214 /*
215 * Resync device and local timestamps after that many microseconds without
216 * receiving data.
217 */
218 #define MAX_TIMESTAMP_INTERVAL 1000000
219
220 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
221 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
222
223 /*
224 * these device-dependent functions determine what slot corresponds
225 * to a valid contact that was just read.
226 */
227
228 static int cypress_compute_slot(struct mt_application *application,
229 struct mt_usages *slot)
230 {
231 if (*slot->contactid != 0 || application->num_received == 0)
232 return *slot->contactid;
233 else
234 return -1;
235 }
236
237 static const struct mt_class mt_classes[] = {
238 { .name = MT_CLS_DEFAULT,
239 .quirks = MT_QUIRK_ALWAYS_VALID |
240 MT_QUIRK_CONTACT_CNT_ACCURATE },
241 { .name = MT_CLS_NSMU,
242 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
243 { .name = MT_CLS_SERIAL,
244 .quirks = MT_QUIRK_ALWAYS_VALID},
245 { .name = MT_CLS_CONFIDENCE,
246 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
247 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
248 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
249 MT_QUIRK_SLOT_IS_CONTACTID },
250 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
251 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
252 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
253 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
254 .quirks = MT_QUIRK_VALID_IS_INRANGE |
255 MT_QUIRK_SLOT_IS_CONTACTID,
256 .maxcontacts = 2 },
257 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
258 .quirks = MT_QUIRK_VALID_IS_INRANGE |
259 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
260 .maxcontacts = 2 },
261 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
262 .quirks = MT_QUIRK_VALID_IS_INRANGE |
263 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
264 { .name = MT_CLS_WIN_8,
265 .quirks = MT_QUIRK_ALWAYS_VALID |
266 MT_QUIRK_IGNORE_DUPLICATES |
267 MT_QUIRK_HOVERING |
268 MT_QUIRK_CONTACT_CNT_ACCURATE |
269 MT_QUIRK_STICKY_FINGERS |
270 MT_QUIRK_WIN8_PTP_BUTTONS },
271 { .name = MT_CLS_EXPORT_ALL_INPUTS,
272 .quirks = MT_QUIRK_ALWAYS_VALID |
273 MT_QUIRK_CONTACT_CNT_ACCURATE,
274 .export_all_inputs = true },
275 { .name = MT_CLS_WIN_8_DUAL,
276 .quirks = MT_QUIRK_ALWAYS_VALID |
277 MT_QUIRK_IGNORE_DUPLICATES |
278 MT_QUIRK_HOVERING |
279 MT_QUIRK_CONTACT_CNT_ACCURATE |
280 MT_QUIRK_WIN8_PTP_BUTTONS,
281 .export_all_inputs = true },
282
283 /*
284 * vendor specific classes
285 */
286 { .name = MT_CLS_3M,
287 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
288 MT_QUIRK_SLOT_IS_CONTACTID |
289 MT_QUIRK_TOUCH_SIZE_SCALING,
290 .sn_move = 2048,
291 .sn_width = 128,
292 .sn_height = 128,
293 .maxcontacts = 60,
294 },
295 { .name = MT_CLS_EGALAX,
296 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
297 MT_QUIRK_VALID_IS_INRANGE,
298 .sn_move = 4096,
299 .sn_pressure = 32,
300 },
301 { .name = MT_CLS_EGALAX_SERIAL,
302 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
303 MT_QUIRK_ALWAYS_VALID,
304 .sn_move = 4096,
305 .sn_pressure = 32,
306 },
307 { .name = MT_CLS_TOPSEED,
308 .quirks = MT_QUIRK_ALWAYS_VALID,
309 .is_indirect = true,
310 .maxcontacts = 2,
311 },
312 { .name = MT_CLS_PANASONIC,
313 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
314 .maxcontacts = 4 },
315 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
316 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
317 MT_QUIRK_VALID_IS_INRANGE |
318 MT_QUIRK_SLOT_IS_CONTACTID,
319 .maxcontacts = 2
320 },
321 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
322 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
323 MT_QUIRK_SLOT_IS_CONTACTID
324 },
325
326 { .name = MT_CLS_FLATFROG,
327 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
328 MT_QUIRK_NO_AREA,
329 .sn_move = 2048,
330 .maxcontacts = 40,
331 },
332 { .name = MT_CLS_LG,
333 .quirks = MT_QUIRK_ALWAYS_VALID |
334 MT_QUIRK_FIX_CONST_CONTACT_ID |
335 MT_QUIRK_IGNORE_DUPLICATES |
336 MT_QUIRK_HOVERING |
337 MT_QUIRK_CONTACT_CNT_ACCURATE },
338 { .name = MT_CLS_ASUS,
339 .quirks = MT_QUIRK_ALWAYS_VALID |
340 MT_QUIRK_CONTACT_CNT_ACCURATE |
341 MT_QUIRK_ASUS_CUSTOM_UP },
342 { .name = MT_CLS_VTL,
343 .quirks = MT_QUIRK_ALWAYS_VALID |
344 MT_QUIRK_CONTACT_CNT_ACCURATE |
345 MT_QUIRK_FORCE_GET_FEATURE,
346 },
347 { .name = MT_CLS_GOOGLE,
348 .quirks = MT_QUIRK_ALWAYS_VALID |
349 MT_QUIRK_CONTACT_CNT_ACCURATE |
350 MT_QUIRK_SLOT_IS_CONTACTID |
351 MT_QUIRK_HOVERING
352 },
353 { .name = MT_CLS_RAZER_BLADE_STEALTH,
354 .quirks = MT_QUIRK_ALWAYS_VALID |
355 MT_QUIRK_IGNORE_DUPLICATES |
356 MT_QUIRK_HOVERING |
357 MT_QUIRK_CONTACT_CNT_ACCURATE |
358 MT_QUIRK_WIN8_PTP_BUTTONS,
359 },
360 { }
361 };
362
363 static ssize_t mt_show_quirks(struct device *dev,
364 struct device_attribute *attr,
365 char *buf)
366 {
367 struct hid_device *hdev = to_hid_device(dev);
368 struct mt_device *td = hid_get_drvdata(hdev);
369
370 return sprintf(buf, "%u\n", td->mtclass.quirks);
371 }
372
373 static ssize_t mt_set_quirks(struct device *dev,
374 struct device_attribute *attr,
375 const char *buf, size_t count)
376 {
377 struct hid_device *hdev = to_hid_device(dev);
378 struct mt_device *td = hid_get_drvdata(hdev);
379 struct mt_application *application;
380
381 unsigned long val;
382
383 if (kstrtoul(buf, 0, &val))
384 return -EINVAL;
385
386 td->mtclass.quirks = val;
387
388 list_for_each_entry(application, &td->applications, list) {
389 application->quirks = val;
390 if (!application->have_contact_count)
391 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
392 }
393
394 return count;
395 }
396
397 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
398
399 static struct attribute *sysfs_attrs[] = {
400 &dev_attr_quirks.attr,
401 NULL
402 };
403
404 static const struct attribute_group mt_attribute_group = {
405 .attrs = sysfs_attrs
406 };
407
408 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
409 {
410 int ret;
411 u32 size = hid_report_len(report);
412 u8 *buf;
413
414 /*
415 * Do not fetch the feature report if the device has been explicitly
416 * marked as non-capable.
417 */
418 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS)
419 return;
420
421 buf = hid_alloc_report_buf(report, GFP_KERNEL);
422 if (!buf)
423 return;
424
425 ret = hid_hw_raw_request(hdev, report->id, buf, size,
426 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
427 if (ret < 0) {
428 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
429 report->id);
430 } else {
431 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
432 size, 0);
433 if (ret)
434 dev_warn(&hdev->dev, "failed to report feature\n");
435 }
436
437 kfree(buf);
438 }
439
440 static void mt_feature_mapping(struct hid_device *hdev,
441 struct hid_field *field, struct hid_usage *usage)
442 {
443 struct mt_device *td = hid_get_drvdata(hdev);
444
445 switch (usage->hid) {
446 case HID_DG_CONTACTMAX:
447 mt_get_feature(hdev, field->report);
448
449 td->maxcontacts = field->value[0];
450 if (!td->maxcontacts &&
451 field->logical_maximum <= MT_MAX_MAXCONTACT)
452 td->maxcontacts = field->logical_maximum;
453 if (td->mtclass.maxcontacts)
454 /* check if the maxcontacts is given by the class */
455 td->maxcontacts = td->mtclass.maxcontacts;
456
457 break;
458 case HID_DG_BUTTONTYPE:
459 if (usage->usage_index >= field->report_count) {
460 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
461 break;
462 }
463
464 mt_get_feature(hdev, field->report);
465 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
466 td->is_buttonpad = true;
467
468 break;
469 case 0xff0000c5:
470 /* Retrieve the Win8 blob once to enable some devices */
471 if (usage->usage_index == 0)
472 mt_get_feature(hdev, field->report);
473 break;
474 }
475 }
476
477 static void set_abs(struct input_dev *input, unsigned int code,
478 struct hid_field *field, int snratio)
479 {
480 int fmin = field->logical_minimum;
481 int fmax = field->logical_maximum;
482 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
483 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
484 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
485 }
486
487 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev,
488 struct mt_application *application)
489 {
490 struct mt_usages *usage;
491
492 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL);
493 if (!usage)
494 return NULL;
495
496 /* set some defaults so we do not need to check for null pointers */
497 usage->x = DEFAULT_ZERO;
498 usage->y = DEFAULT_ZERO;
499 usage->cx = DEFAULT_ZERO;
500 usage->cy = DEFAULT_ZERO;
501 usage->p = DEFAULT_ZERO;
502 usage->w = DEFAULT_ZERO;
503 usage->h = DEFAULT_ZERO;
504 usage->a = DEFAULT_ZERO;
505 usage->contactid = DEFAULT_ZERO;
506 usage->tip_state = DEFAULT_FALSE;
507 usage->inrange_state = DEFAULT_FALSE;
508 usage->confidence_state = DEFAULT_TRUE;
509
510 list_add_tail(&usage->list, &application->mt_usages);
511
512 return usage;
513 }
514
515 static struct mt_application *mt_allocate_application(struct mt_device *td,
516 unsigned int application)
517 {
518 struct mt_application *mt_application;
519
520 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application),
521 GFP_KERNEL);
522 if (!mt_application)
523 return NULL;
524
525 mt_application->application = application;
526 INIT_LIST_HEAD(&mt_application->mt_usages);
527
528 if (application == HID_DG_TOUCHSCREEN)
529 mt_application->mt_flags |= INPUT_MT_DIRECT;
530
531 /*
532 * Model touchscreens providing buttons as touchpads.
533 */
534 if (application == HID_DG_TOUCHPAD) {
535 mt_application->mt_flags |= INPUT_MT_POINTER;
536 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
537 }
538
539 mt_application->scantime = DEFAULT_ZERO;
540 mt_application->raw_cc = DEFAULT_ZERO;
541 mt_application->quirks = td->mtclass.quirks;
542
543 list_add_tail(&mt_application->list, &td->applications);
544
545 return mt_application;
546 }
547
548 static struct mt_application *mt_find_application(struct mt_device *td,
549 unsigned int application)
550 {
551 struct mt_application *tmp, *mt_application = NULL;
552
553 list_for_each_entry(tmp, &td->applications, list) {
554 if (application == tmp->application) {
555 mt_application = tmp;
556 break;
557 }
558 }
559
560 if (!mt_application)
561 mt_application = mt_allocate_application(td, application);
562
563 return mt_application;
564 }
565
566 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td,
567 struct hid_report *report)
568 {
569 struct mt_report_data *rdata;
570 struct hid_field *field;
571 int r, n;
572
573 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL);
574 if (!rdata)
575 return NULL;
576
577 rdata->report = report;
578 rdata->application = mt_find_application(td, report->application);
579
580 if (!rdata->application) {
581 devm_kfree(&td->hdev->dev, rdata);
582 return NULL;
583 }
584
585 for (r = 0; r < report->maxfield; r++) {
586 field = report->field[r];
587
588 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
589 continue;
590
591 for (n = 0; n < field->report_count; n++) {
592 if (field->usage[n].hid == HID_DG_CONTACTID)
593 rdata->is_mt_collection = true;
594 }
595 }
596
597 list_add_tail(&rdata->list, &td->reports);
598
599 return rdata;
600 }
601
602 static struct mt_report_data *mt_find_report_data(struct mt_device *td,
603 struct hid_report *report)
604 {
605 struct mt_report_data *tmp, *rdata = NULL;
606
607 list_for_each_entry(tmp, &td->reports, list) {
608 if (report == tmp->report) {
609 rdata = tmp;
610 break;
611 }
612 }
613
614 if (!rdata)
615 rdata = mt_allocate_report_data(td, report);
616
617 return rdata;
618 }
619
620 static void mt_store_field(struct hid_device *hdev,
621 struct mt_application *application,
622 __s32 *value,
623 size_t offset)
624 {
625 struct mt_usages *usage;
626 __s32 **target;
627
628 if (list_empty(&application->mt_usages))
629 usage = mt_allocate_usage(hdev, application);
630 else
631 usage = list_last_entry(&application->mt_usages,
632 struct mt_usages,
633 list);
634
635 if (!usage)
636 return;
637
638 target = (__s32 **)((char *)usage + offset);
639
640 /* the value has already been filled, create a new slot */
641 if (*target != DEFAULT_TRUE &&
642 *target != DEFAULT_FALSE &&
643 *target != DEFAULT_ZERO) {
644 if (usage->contactid == DEFAULT_ZERO ||
645 usage->x == DEFAULT_ZERO ||
646 usage->y == DEFAULT_ZERO) {
647 hid_dbg(hdev,
648 "ignoring duplicate usage on incomplete");
649 return;
650 }
651 usage = mt_allocate_usage(hdev, application);
652 if (!usage)
653 return;
654
655 target = (__s32 **)((char *)usage + offset);
656 }
657
658 *target = value;
659 }
660
661 #define MT_STORE_FIELD(__name) \
662 mt_store_field(hdev, app, \
663 &field->value[usage->usage_index], \
664 offsetof(struct mt_usages, __name))
665
666 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
667 struct hid_field *field, struct hid_usage *usage,
668 unsigned long **bit, int *max, struct mt_application *app)
669 {
670 struct mt_device *td = hid_get_drvdata(hdev);
671 struct mt_class *cls = &td->mtclass;
672 int code;
673 struct hid_usage *prev_usage = NULL;
674
675 /*
676 * Model touchscreens providing buttons as touchpads.
677 */
678 if (field->application == HID_DG_TOUCHSCREEN &&
679 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
680 app->mt_flags |= INPUT_MT_POINTER;
681 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
682 }
683
684 /* count the buttons on touchpads */
685 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
686 app->buttons_count++;
687
688 if (usage->usage_index)
689 prev_usage = &field->usage[usage->usage_index - 1];
690
691 switch (usage->hid & HID_USAGE_PAGE) {
692
693 case HID_UP_GENDESK:
694 switch (usage->hid) {
695 case HID_GD_X:
696 if (prev_usage && (prev_usage->hid == usage->hid)) {
697 code = ABS_MT_TOOL_X;
698 MT_STORE_FIELD(cx);
699 } else {
700 code = ABS_MT_POSITION_X;
701 MT_STORE_FIELD(x);
702 }
703
704 set_abs(hi->input, code, field, cls->sn_move);
705
706 /*
707 * A system multi-axis that exports X and Y has a high
708 * chance of being used directly on a surface
709 */
710 if (field->application == HID_GD_SYSTEM_MULTIAXIS) {
711 __set_bit(INPUT_PROP_DIRECT,
712 hi->input->propbit);
713 input_set_abs_params(hi->input,
714 ABS_MT_TOOL_TYPE,
715 MT_TOOL_DIAL,
716 MT_TOOL_DIAL, 0, 0);
717 }
718
719 return 1;
720 case HID_GD_Y:
721 if (prev_usage && (prev_usage->hid == usage->hid)) {
722 code = ABS_MT_TOOL_Y;
723 MT_STORE_FIELD(cy);
724 } else {
725 code = ABS_MT_POSITION_Y;
726 MT_STORE_FIELD(y);
727 }
728
729 set_abs(hi->input, code, field, cls->sn_move);
730
731 return 1;
732 }
733 return 0;
734
735 case HID_UP_DIGITIZER:
736 switch (usage->hid) {
737 case HID_DG_INRANGE:
738 if (app->quirks & MT_QUIRK_HOVERING) {
739 input_set_abs_params(hi->input,
740 ABS_MT_DISTANCE, 0, 1, 0, 0);
741 }
742 MT_STORE_FIELD(inrange_state);
743 return 1;
744 case HID_DG_CONFIDENCE:
745 if ((cls->name == MT_CLS_WIN_8 ||
746 cls->name == MT_CLS_WIN_8_DUAL) &&
747 (field->application == HID_DG_TOUCHPAD ||
748 field->application == HID_DG_TOUCHSCREEN))
749 app->quirks |= MT_QUIRK_CONFIDENCE;
750
751 if (app->quirks & MT_QUIRK_CONFIDENCE)
752 input_set_abs_params(hi->input,
753 ABS_MT_TOOL_TYPE,
754 MT_TOOL_FINGER,
755 MT_TOOL_PALM, 0, 0);
756
757 MT_STORE_FIELD(confidence_state);
758 return 1;
759 case HID_DG_TIPSWITCH:
760 if (field->application != HID_GD_SYSTEM_MULTIAXIS)
761 input_set_capability(hi->input,
762 EV_KEY, BTN_TOUCH);
763 MT_STORE_FIELD(tip_state);
764 return 1;
765 case HID_DG_CONTACTID:
766 MT_STORE_FIELD(contactid);
767 app->touches_by_report++;
768 return 1;
769 case HID_DG_WIDTH:
770 if (!(app->quirks & MT_QUIRK_NO_AREA))
771 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
772 cls->sn_width);
773 MT_STORE_FIELD(w);
774 return 1;
775 case HID_DG_HEIGHT:
776 if (!(app->quirks & MT_QUIRK_NO_AREA)) {
777 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
778 cls->sn_height);
779
780 /*
781 * Only set ABS_MT_ORIENTATION if it is not
782 * already set by the HID_DG_AZIMUTH usage.
783 */
784 if (!test_bit(ABS_MT_ORIENTATION,
785 hi->input->absbit))
786 input_set_abs_params(hi->input,
787 ABS_MT_ORIENTATION, 0, 1, 0, 0);
788 }
789 MT_STORE_FIELD(h);
790 return 1;
791 case HID_DG_TIPPRESSURE:
792 set_abs(hi->input, ABS_MT_PRESSURE, field,
793 cls->sn_pressure);
794 MT_STORE_FIELD(p);
795 return 1;
796 case HID_DG_SCANTIME:
797 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
798 app->scantime = &field->value[usage->usage_index];
799 app->scantime_logical_max = field->logical_maximum;
800 return 1;
801 case HID_DG_CONTACTCOUNT:
802 app->have_contact_count = true;
803 app->raw_cc = &field->value[usage->usage_index];
804 return 1;
805 case HID_DG_AZIMUTH:
806 /*
807 * Azimuth has the range of [0, MAX) representing a full
808 * revolution. Set ABS_MT_ORIENTATION to a quarter of
809 * MAX according the definition of ABS_MT_ORIENTATION
810 */
811 input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
812 -field->logical_maximum / 4,
813 field->logical_maximum / 4,
814 cls->sn_move ?
815 field->logical_maximum / cls->sn_move : 0, 0);
816 MT_STORE_FIELD(a);
817 return 1;
818 case HID_DG_CONTACTMAX:
819 /* contact max are global to the report */
820 return -1;
821 case HID_DG_TOUCH:
822 /* Legacy devices use TIPSWITCH and not TOUCH.
823 * Let's just ignore this field. */
824 return -1;
825 }
826 /* let hid-input decide for the others */
827 return 0;
828
829 case HID_UP_BUTTON:
830 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
831 /*
832 * MS PTP spec says that external buttons left and right have
833 * usages 2 and 3.
834 */
835 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
836 field->application == HID_DG_TOUCHPAD &&
837 (usage->hid & HID_USAGE) > 1)
838 code--;
839
840 if (field->application == HID_GD_SYSTEM_MULTIAXIS)
841 code = BTN_0 + ((usage->hid - 1) & HID_USAGE);
842
843 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
844 input_set_capability(hi->input, EV_KEY, code);
845 return 1;
846
847 case 0xff000000:
848 /* we do not want to map these: no input-oriented meaning */
849 return -1;
850 }
851
852 return 0;
853 }
854
855 static int mt_compute_slot(struct mt_device *td, struct mt_application *app,
856 struct mt_usages *slot,
857 struct input_dev *input)
858 {
859 __s32 quirks = app->quirks;
860
861 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
862 return *slot->contactid;
863
864 if (quirks & MT_QUIRK_CYPRESS)
865 return cypress_compute_slot(app, slot);
866
867 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
868 return app->num_received;
869
870 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
871 return *slot->contactid - 1;
872
873 return input_mt_get_slot_by_key(input, *slot->contactid);
874 }
875
876 static void mt_release_pending_palms(struct mt_device *td,
877 struct mt_application *app,
878 struct input_dev *input)
879 {
880 int slotnum;
881 bool need_sync = false;
882
883 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) {
884 clear_bit(slotnum, app->pending_palm_slots);
885
886 input_mt_slot(input, slotnum);
887 input_mt_report_slot_state(input, MT_TOOL_PALM, false);
888
889 need_sync = true;
890 }
891
892 if (need_sync) {
893 input_mt_sync_frame(input);
894 input_sync(input);
895 }
896 }
897
898 /*
899 * this function is called when a whole packet has been received and processed,
900 * so that it can decide what to send to the input layer.
901 */
902 static void mt_sync_frame(struct mt_device *td, struct mt_application *app,
903 struct input_dev *input)
904 {
905 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS)
906 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state);
907
908 input_mt_sync_frame(input);
909 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp);
910 input_sync(input);
911
912 mt_release_pending_palms(td, app, input);
913
914 app->num_received = 0;
915 app->left_button_state = 0;
916
917 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
918 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
919 else
920 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
921 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
922 }
923
924 static int mt_compute_timestamp(struct mt_application *app, __s32 value)
925 {
926 long delta = value - app->prev_scantime;
927 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies);
928
929 app->jiffies = jiffies;
930
931 if (delta < 0)
932 delta += app->scantime_logical_max;
933
934 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
935 delta *= 100;
936
937 if (jdelta > MAX_TIMESTAMP_INTERVAL)
938 /* No data received for a while, resync the timestamp. */
939 return 0;
940 else
941 return app->timestamp + delta;
942 }
943
944 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
945 struct hid_usage *usage, __s32 value)
946 {
947 /* we will handle the hidinput part later, now remains hiddev */
948 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
949 hid->hiddev_hid_event(hid, field, usage, value);
950
951 return 1;
952 }
953
954 static int mt_process_slot(struct mt_device *td, struct input_dev *input,
955 struct mt_application *app,
956 struct mt_usages *slot)
957 {
958 struct input_mt *mt = input->mt;
959 __s32 quirks = app->quirks;
960 bool valid = true;
961 bool confidence_state = true;
962 bool inrange_state = false;
963 int active;
964 int slotnum;
965 int tool = MT_TOOL_FINGER;
966
967 if (!slot)
968 return -EINVAL;
969
970 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
971 app->num_received >= app->num_expected)
972 return -EAGAIN;
973
974 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) {
975 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
976 valid = *slot->inrange_state;
977 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
978 valid = *slot->tip_state;
979 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
980 valid = *slot->confidence_state;
981
982 if (!valid)
983 return 0;
984 }
985
986 slotnum = mt_compute_slot(td, app, slot, input);
987 if (slotnum < 0 || slotnum >= td->maxcontacts)
988 return 0;
989
990 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
991 struct input_mt_slot *i_slot = &mt->slots[slotnum];
992
993 if (input_mt_is_active(i_slot) &&
994 input_mt_is_used(mt, i_slot))
995 return -EAGAIN;
996 }
997
998 if (quirks & MT_QUIRK_CONFIDENCE)
999 confidence_state = *slot->confidence_state;
1000
1001 if (quirks & MT_QUIRK_HOVERING)
1002 inrange_state = *slot->inrange_state;
1003
1004 active = *slot->tip_state || inrange_state;
1005
1006 if (app->application == HID_GD_SYSTEM_MULTIAXIS)
1007 tool = MT_TOOL_DIAL;
1008 else if (unlikely(!confidence_state)) {
1009 tool = MT_TOOL_PALM;
1010 if (!active && mt &&
1011 input_mt_is_active(&mt->slots[slotnum])) {
1012 /*
1013 * The non-confidence was reported for
1014 * previously valid contact that is also no
1015 * longer valid. We can't simply report
1016 * lift-off as userspace will not be aware
1017 * of non-confidence, so we need to split
1018 * it into 2 events: active MT_TOOL_PALM
1019 * and a separate liftoff.
1020 */
1021 active = true;
1022 set_bit(slotnum, app->pending_palm_slots);
1023 }
1024 }
1025
1026 input_mt_slot(input, slotnum);
1027 input_mt_report_slot_state(input, tool, active);
1028 if (active) {
1029 /* this finger is in proximity of the sensor */
1030 int wide = (*slot->w > *slot->h);
1031 int major = max(*slot->w, *slot->h);
1032 int minor = min(*slot->w, *slot->h);
1033 int orientation = wide;
1034 int max_azimuth;
1035 int azimuth;
1036
1037 if (slot->a != DEFAULT_ZERO) {
1038 /*
1039 * Azimuth is counter-clockwise and ranges from [0, MAX)
1040 * (a full revolution). Convert it to clockwise ranging
1041 * [-MAX/2, MAX/2].
1042 *
1043 * Note that ABS_MT_ORIENTATION require us to report
1044 * the limit of [-MAX/4, MAX/4], but the value can go
1045 * out of range to [-MAX/2, MAX/2] to report an upside
1046 * down ellipsis.
1047 */
1048 azimuth = *slot->a;
1049 max_azimuth = input_abs_get_max(input,
1050 ABS_MT_ORIENTATION);
1051 if (azimuth > max_azimuth * 2)
1052 azimuth -= max_azimuth * 4;
1053 orientation = -azimuth;
1054 }
1055
1056 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
1057 /*
1058 * divided by two to match visual scale of touch
1059 * for devices with this quirk
1060 */
1061 major = major >> 1;
1062 minor = minor >> 1;
1063 }
1064
1065 input_event(input, EV_ABS, ABS_MT_POSITION_X, *slot->x);
1066 input_event(input, EV_ABS, ABS_MT_POSITION_Y, *slot->y);
1067 input_event(input, EV_ABS, ABS_MT_TOOL_X, *slot->cx);
1068 input_event(input, EV_ABS, ABS_MT_TOOL_Y, *slot->cy);
1069 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state);
1070 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation);
1071 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p);
1072 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
1073 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
1074
1075 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
1076 }
1077
1078 return 0;
1079 }
1080
1081 static void mt_process_mt_event(struct hid_device *hid,
1082 struct mt_application *app,
1083 struct hid_field *field,
1084 struct hid_usage *usage,
1085 __s32 value,
1086 bool first_packet)
1087 {
1088 __s32 quirks = app->quirks;
1089 struct input_dev *input = field->hidinput->input;
1090
1091 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT))
1092 return;
1093
1094 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) {
1095
1096 /*
1097 * For Win8 PTP touchpads we should only look at
1098 * non finger/touch events in the first_packet of a
1099 * (possible) multi-packet frame.
1100 */
1101 if (!first_packet)
1102 return;
1103
1104 /*
1105 * For Win8 PTP touchpads we map both the clickpad click
1106 * and any "external" left buttons to BTN_LEFT if a
1107 * device claims to have both we need to report 1 for
1108 * BTN_LEFT if either is pressed, so we or all values
1109 * together and report the result in mt_sync_frame().
1110 */
1111 if (usage->type == EV_KEY && usage->code == BTN_LEFT) {
1112 app->left_button_state |= value;
1113 return;
1114 }
1115 }
1116
1117 input_event(input, usage->type, usage->code, value);
1118 }
1119
1120 static void mt_touch_report(struct hid_device *hid,
1121 struct mt_report_data *rdata)
1122 {
1123 struct mt_device *td = hid_get_drvdata(hid);
1124 struct hid_report *report = rdata->report;
1125 struct mt_application *app = rdata->application;
1126 struct hid_field *field;
1127 struct input_dev *input;
1128 struct mt_usages *slot;
1129 bool first_packet;
1130 unsigned count;
1131 int r, n;
1132 int scantime = 0;
1133 int contact_count = -1;
1134
1135 /* sticky fingers release in progress, abort */
1136 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1137 return;
1138
1139 scantime = *app->scantime;
1140 app->timestamp = mt_compute_timestamp(app, scantime);
1141 if (app->raw_cc != DEFAULT_ZERO)
1142 contact_count = *app->raw_cc;
1143
1144 /*
1145 * Includes multi-packet support where subsequent
1146 * packets are sent with zero contactcount.
1147 */
1148 if (contact_count >= 0) {
1149 /*
1150 * For Win8 PTPs the first packet (td->num_received == 0) may
1151 * have a contactcount of 0 if there only is a button event.
1152 * We double check that this is not a continuation packet
1153 * of a possible multi-packet frame be checking that the
1154 * timestamp has changed.
1155 */
1156 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
1157 app->num_received == 0 &&
1158 app->prev_scantime != scantime)
1159 app->num_expected = contact_count;
1160 /* A non 0 contact count always indicates a first packet */
1161 else if (contact_count)
1162 app->num_expected = contact_count;
1163 }
1164 app->prev_scantime = scantime;
1165
1166 first_packet = app->num_received == 0;
1167
1168 input = report->field[0]->hidinput->input;
1169
1170 list_for_each_entry(slot, &app->mt_usages, list) {
1171 if (!mt_process_slot(td, input, app, slot))
1172 app->num_received++;
1173 }
1174
1175 for (r = 0; r < report->maxfield; r++) {
1176 field = report->field[r];
1177 count = field->report_count;
1178
1179 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
1180 continue;
1181
1182 for (n = 0; n < count; n++)
1183 mt_process_mt_event(hid, app, field,
1184 &field->usage[n], field->value[n],
1185 first_packet);
1186 }
1187
1188 if (app->num_received >= app->num_expected)
1189 mt_sync_frame(td, app, input);
1190
1191 /*
1192 * Windows 8 specs says 2 things:
1193 * - once a contact has been reported, it has to be reported in each
1194 * subsequent report
1195 * - the report rate when fingers are present has to be at least
1196 * the refresh rate of the screen, 60 or 120 Hz
1197 *
1198 * I interprete this that the specification forces a report rate of
1199 * at least 60 Hz for a touchscreen to be certified.
1200 * Which means that if we do not get a report whithin 16 ms, either
1201 * something wrong happens, either the touchscreen forgets to send
1202 * a release. Taking a reasonable margin allows to remove issues
1203 * with USB communication or the load of the machine.
1204 *
1205 * Given that Win 8 devices are forced to send a release, this will
1206 * only affect laggish machines and the ones that have a firmware
1207 * defect.
1208 */
1209 if (app->quirks & MT_QUIRK_STICKY_FINGERS) {
1210 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1211 mod_timer(&td->release_timer,
1212 jiffies + msecs_to_jiffies(100));
1213 else
1214 del_timer(&td->release_timer);
1215 }
1216
1217 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1218 }
1219
1220 static int mt_touch_input_configured(struct hid_device *hdev,
1221 struct hid_input *hi,
1222 struct mt_application *app)
1223 {
1224 struct mt_device *td = hid_get_drvdata(hdev);
1225 struct mt_class *cls = &td->mtclass;
1226 struct input_dev *input = hi->input;
1227 int ret;
1228
1229 if (!td->maxcontacts)
1230 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
1231
1232 mt_post_parse(td, app);
1233 if (td->serial_maybe)
1234 mt_post_parse_default_settings(td, app);
1235
1236 if (cls->is_indirect)
1237 app->mt_flags |= INPUT_MT_POINTER;
1238
1239 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
1240 app->mt_flags |= INPUT_MT_DROP_UNUSED;
1241
1242 /* check for clickpads */
1243 if ((app->mt_flags & INPUT_MT_POINTER) &&
1244 (app->buttons_count == 1))
1245 td->is_buttonpad = true;
1246
1247 if (td->is_buttonpad)
1248 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
1249
1250 app->pending_palm_slots = devm_kcalloc(&hi->input->dev,
1251 BITS_TO_LONGS(td->maxcontacts),
1252 sizeof(long),
1253 GFP_KERNEL);
1254 if (!app->pending_palm_slots)
1255 return -ENOMEM;
1256
1257 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags);
1258 if (ret)
1259 return ret;
1260
1261 app->mt_flags = 0;
1262 return 0;
1263 }
1264
1265 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
1266 max, EV_KEY, (c))
1267 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
1268 struct hid_field *field, struct hid_usage *usage,
1269 unsigned long **bit, int *max)
1270 {
1271 struct mt_device *td = hid_get_drvdata(hdev);
1272 struct mt_application *application;
1273 struct mt_report_data *rdata;
1274
1275 rdata = mt_find_report_data(td, field->report);
1276 if (!rdata) {
1277 hid_err(hdev, "failed to allocate data for report\n");
1278 return 0;
1279 }
1280
1281 application = rdata->application;
1282
1283 /*
1284 * If mtclass.export_all_inputs is not set, only map fields from
1285 * TouchScreen or TouchPad collections. We need to ignore fields
1286 * that belong to other collections such as Mouse that might have
1287 * the same GenericDesktop usages.
1288 */
1289 if (!td->mtclass.export_all_inputs &&
1290 field->application != HID_DG_TOUCHSCREEN &&
1291 field->application != HID_DG_PEN &&
1292 field->application != HID_DG_TOUCHPAD &&
1293 field->application != HID_GD_KEYBOARD &&
1294 field->application != HID_GD_SYSTEM_CONTROL &&
1295 field->application != HID_CP_CONSUMER_CONTROL &&
1296 field->application != HID_GD_WIRELESS_RADIO_CTLS &&
1297 field->application != HID_GD_SYSTEM_MULTIAXIS &&
1298 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1299 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP))
1300 return -1;
1301
1302 /*
1303 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
1304 * touchpad report descriptor. We need to treat these as an array to
1305 * map usages to input keys.
1306 */
1307 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1308 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
1309 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
1310 set_bit(EV_REP, hi->input->evbit);
1311 if (field->flags & HID_MAIN_ITEM_VARIABLE)
1312 field->flags &= ~HID_MAIN_ITEM_VARIABLE;
1313 switch (usage->hid & HID_USAGE) {
1314 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break;
1315 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break;
1316 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break;
1317 case 0x6b: mt_map_key_clear(KEY_F21); break;
1318 case 0x6c: mt_map_key_clear(KEY_SLEEP); break;
1319 default:
1320 return -1;
1321 }
1322 return 1;
1323 }
1324
1325 if (rdata->is_mt_collection)
1326 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max,
1327 application);
1328
1329 /* let hid-core decide for the others */
1330 return 0;
1331 }
1332
1333 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
1334 struct hid_field *field, struct hid_usage *usage,
1335 unsigned long **bit, int *max)
1336 {
1337 struct mt_device *td = hid_get_drvdata(hdev);
1338 struct mt_report_data *rdata;
1339
1340 rdata = mt_find_report_data(td, field->report);
1341 if (rdata && rdata->is_mt_collection) {
1342 /* We own these mappings, tell hid-input to ignore them */
1343 return -1;
1344 }
1345
1346 /* let hid-core decide for the others */
1347 return 0;
1348 }
1349
1350 static int mt_event(struct hid_device *hid, struct hid_field *field,
1351 struct hid_usage *usage, __s32 value)
1352 {
1353 struct mt_device *td = hid_get_drvdata(hid);
1354 struct mt_report_data *rdata;
1355
1356 rdata = mt_find_report_data(td, field->report);
1357 if (rdata && rdata->is_mt_collection)
1358 return mt_touch_event(hid, field, usage, value);
1359
1360 return 0;
1361 }
1362
1363 static void mt_report(struct hid_device *hid, struct hid_report *report)
1364 {
1365 struct mt_device *td = hid_get_drvdata(hid);
1366 struct hid_field *field = report->field[0];
1367 struct mt_report_data *rdata;
1368
1369 if (!(hid->claimed & HID_CLAIMED_INPUT))
1370 return;
1371
1372 rdata = mt_find_report_data(td, report);
1373 if (rdata && rdata->is_mt_collection)
1374 return mt_touch_report(hid, rdata);
1375
1376 if (field && field->hidinput && field->hidinput->input)
1377 input_sync(field->hidinput->input);
1378 }
1379
1380 static bool mt_need_to_apply_feature(struct hid_device *hdev,
1381 struct hid_field *field,
1382 struct hid_usage *usage,
1383 enum latency_mode latency,
1384 bool surface_switch,
1385 bool button_switch,
1386 bool *inputmode_found)
1387 {
1388 struct mt_device *td = hid_get_drvdata(hdev);
1389 struct mt_class *cls = &td->mtclass;
1390 struct hid_report *report = field->report;
1391 unsigned int index = usage->usage_index;
1392 char *buf;
1393 u32 report_len;
1394 int max;
1395
1396 switch (usage->hid) {
1397 case HID_DG_INPUTMODE:
1398 /*
1399 * Some elan panels wrongly declare 2 input mode features,
1400 * and silently ignore when we set the value in the second
1401 * field. Skip the second feature and hope for the best.
1402 */
1403 if (*inputmode_found)
1404 return false;
1405
1406 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1407 report_len = hid_report_len(report);
1408 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1409 if (!buf) {
1410 hid_err(hdev,
1411 "failed to allocate buffer for report\n");
1412 return false;
1413 }
1414 hid_hw_raw_request(hdev, report->id, buf, report_len,
1415 HID_FEATURE_REPORT,
1416 HID_REQ_GET_REPORT);
1417 kfree(buf);
1418 }
1419
1420 field->value[index] = td->inputmode_value;
1421 *inputmode_found = true;
1422 return true;
1423
1424 case HID_DG_CONTACTMAX:
1425 if (cls->maxcontacts) {
1426 max = min_t(int, field->logical_maximum,
1427 cls->maxcontacts);
1428 if (field->value[index] != max) {
1429 field->value[index] = max;
1430 return true;
1431 }
1432 }
1433 break;
1434
1435 case HID_DG_LATENCYMODE:
1436 field->value[index] = latency;
1437 return true;
1438
1439 case HID_DG_SURFACESWITCH:
1440 field->value[index] = surface_switch;
1441 return true;
1442
1443 case HID_DG_BUTTONSWITCH:
1444 field->value[index] = button_switch;
1445 return true;
1446 }
1447
1448 return false; /* no need to update the report */
1449 }
1450
1451 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency,
1452 bool surface_switch, bool button_switch)
1453 {
1454 struct hid_report_enum *rep_enum;
1455 struct hid_report *rep;
1456 struct hid_usage *usage;
1457 int i, j;
1458 bool update_report;
1459 bool inputmode_found = false;
1460
1461 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
1462 list_for_each_entry(rep, &rep_enum->report_list, list) {
1463 update_report = false;
1464
1465 for (i = 0; i < rep->maxfield; i++) {
1466 /* Ignore if report count is out of bounds. */
1467 if (rep->field[i]->report_count < 1)
1468 continue;
1469
1470 for (j = 0; j < rep->field[i]->maxusage; j++) {
1471 usage = &rep->field[i]->usage[j];
1472
1473 if (mt_need_to_apply_feature(hdev,
1474 rep->field[i],
1475 usage,
1476 latency,
1477 surface_switch,
1478 button_switch,
1479 &inputmode_found))
1480 update_report = true;
1481 }
1482 }
1483
1484 if (update_report)
1485 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT);
1486 }
1487 }
1488
1489 static void mt_post_parse_default_settings(struct mt_device *td,
1490 struct mt_application *app)
1491 {
1492 __s32 quirks = app->quirks;
1493
1494 /* unknown serial device needs special quirks */
1495 if (list_is_singular(&app->mt_usages)) {
1496 quirks |= MT_QUIRK_ALWAYS_VALID;
1497 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1498 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1499 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1500 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1501 }
1502
1503 app->quirks = quirks;
1504 }
1505
1506 static void mt_post_parse(struct mt_device *td, struct mt_application *app)
1507 {
1508 if (!app->have_contact_count)
1509 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1510 }
1511
1512 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1513 {
1514 struct mt_device *td = hid_get_drvdata(hdev);
1515 char *name;
1516 const char *suffix = NULL;
1517 unsigned int application = 0;
1518 struct mt_report_data *rdata;
1519 struct mt_application *mt_application = NULL;
1520 struct hid_report *report;
1521 int ret;
1522
1523 list_for_each_entry(report, &hi->reports, hidinput_list) {
1524 application = report->application;
1525 rdata = mt_find_report_data(td, report);
1526 if (!rdata) {
1527 hid_err(hdev, "failed to allocate data for report\n");
1528 return -ENOMEM;
1529 }
1530
1531 mt_application = rdata->application;
1532
1533 if (rdata->is_mt_collection) {
1534 ret = mt_touch_input_configured(hdev, hi,
1535 mt_application);
1536 if (ret)
1537 return ret;
1538 }
1539
1540 /*
1541 * some egalax touchscreens have "application == DG_TOUCHSCREEN"
1542 * for the stylus. Check this first, and then rely on
1543 * the application field.
1544 */
1545 if (report->field[0]->physical == HID_DG_STYLUS) {
1546 suffix = "Pen";
1547 /* force BTN_STYLUS to allow tablet matching in udev */
1548 __set_bit(BTN_STYLUS, hi->input->keybit);
1549 }
1550 }
1551
1552 if (!suffix) {
1553 switch (application) {
1554 case HID_GD_KEYBOARD:
1555 case HID_GD_KEYPAD:
1556 case HID_GD_MOUSE:
1557 case HID_DG_TOUCHPAD:
1558 case HID_GD_SYSTEM_CONTROL:
1559 case HID_CP_CONSUMER_CONTROL:
1560 case HID_GD_WIRELESS_RADIO_CTLS:
1561 case HID_GD_SYSTEM_MULTIAXIS:
1562 /* already handled by hid core */
1563 break;
1564 case HID_DG_TOUCHSCREEN:
1565 /* we do not set suffix = "Touchscreen" */
1566 hi->input->name = hdev->name;
1567 break;
1568 case HID_DG_STYLUS:
1569 /* force BTN_STYLUS to allow tablet matching in udev */
1570 __set_bit(BTN_STYLUS, hi->input->keybit);
1571 break;
1572 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1573 suffix = "Custom Media Keys";
1574 break;
1575 default:
1576 suffix = "UNKNOWN";
1577 break;
1578 }
1579 }
1580
1581 if (suffix) {
1582 name = devm_kzalloc(&hi->input->dev,
1583 strlen(hdev->name) + strlen(suffix) + 2,
1584 GFP_KERNEL);
1585 if (name) {
1586 sprintf(name, "%s %s", hdev->name, suffix);
1587 hi->input->name = name;
1588 }
1589 }
1590
1591 return 0;
1592 }
1593
1594 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1595 {
1596 if (field->usage[0].hid != usage ||
1597 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1598 return;
1599
1600 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1601 field->flags |= HID_MAIN_ITEM_VARIABLE;
1602 }
1603
1604 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1605 {
1606 struct hid_report *report;
1607 int i;
1608
1609 list_for_each_entry(report,
1610 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1611 list) {
1612
1613 if (!report->maxfield)
1614 continue;
1615
1616 for (i = 0; i < report->maxfield; i++)
1617 if (report->field[i]->maxusage >= 1)
1618 mt_fix_const_field(report->field[i], usage);
1619 }
1620 }
1621
1622 static void mt_release_contacts(struct hid_device *hid)
1623 {
1624 struct hid_input *hidinput;
1625 struct mt_application *application;
1626 struct mt_device *td = hid_get_drvdata(hid);
1627
1628 list_for_each_entry(hidinput, &hid->inputs, list) {
1629 struct input_dev *input_dev = hidinput->input;
1630 struct input_mt *mt = input_dev->mt;
1631 int i;
1632
1633 if (mt) {
1634 for (i = 0; i < mt->num_slots; i++) {
1635 input_mt_slot(input_dev, i);
1636 input_mt_report_slot_state(input_dev,
1637 MT_TOOL_FINGER,
1638 false);
1639 }
1640 input_mt_sync_frame(input_dev);
1641 input_sync(input_dev);
1642 }
1643 }
1644
1645 list_for_each_entry(application, &td->applications, list) {
1646 application->num_received = 0;
1647 }
1648 }
1649
1650 static void mt_expired_timeout(struct timer_list *t)
1651 {
1652 struct mt_device *td = from_timer(td, t, release_timer);
1653 struct hid_device *hdev = td->hdev;
1654
1655 /*
1656 * An input report came in just before we release the sticky fingers,
1657 * it will take care of the sticky fingers.
1658 */
1659 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1660 return;
1661 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1662 mt_release_contacts(hdev);
1663 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1664 }
1665
1666 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1667 {
1668 int ret, i;
1669 struct mt_device *td;
1670 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1671
1672 for (i = 0; mt_classes[i].name ; i++) {
1673 if (id->driver_data == mt_classes[i].name) {
1674 mtclass = &(mt_classes[i]);
1675 break;
1676 }
1677 }
1678
1679 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1680 if (!td) {
1681 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1682 return -ENOMEM;
1683 }
1684 td->hdev = hdev;
1685 td->mtclass = *mtclass;
1686 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1687 hid_set_drvdata(hdev, td);
1688
1689 INIT_LIST_HEAD(&td->applications);
1690 INIT_LIST_HEAD(&td->reports);
1691
1692 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1693 td->serial_maybe = true;
1694
1695 /* This allows the driver to correctly support devices
1696 * that emit events over several HID messages.
1697 */
1698 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1699
1700 /*
1701 * This allows the driver to handle different input sensors
1702 * that emits events through different applications on the same HID
1703 * device.
1704 */
1705 hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
1706
1707 if (id->group != HID_GROUP_MULTITOUCH_WIN_8)
1708 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1709
1710 timer_setup(&td->release_timer, mt_expired_timeout, 0);
1711
1712 ret = hid_parse(hdev);
1713 if (ret != 0)
1714 return ret;
1715
1716 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1717 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1718
1719 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1720 if (ret)
1721 return ret;
1722
1723 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1724 if (ret)
1725 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1726 hdev->name);
1727
1728 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
1729
1730 return 0;
1731 }
1732
1733 #ifdef CONFIG_PM
1734 static int mt_reset_resume(struct hid_device *hdev)
1735 {
1736 mt_release_contacts(hdev);
1737 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
1738 return 0;
1739 }
1740
1741 static int mt_resume(struct hid_device *hdev)
1742 {
1743 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1744 * It should be safe to send it to other devices too.
1745 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1746
1747 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1748
1749 return 0;
1750 }
1751 #endif
1752
1753 static void mt_remove(struct hid_device *hdev)
1754 {
1755 struct mt_device *td = hid_get_drvdata(hdev);
1756
1757 del_timer_sync(&td->release_timer);
1758
1759 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1760 hid_hw_stop(hdev);
1761 }
1762
1763 /*
1764 * This list contains only:
1765 * - VID/PID of products not working with the default multitouch handling
1766 * - 2 generic rules.
1767 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1768 */
1769 static const struct hid_device_id mt_devices[] = {
1770
1771 /* 3M panels */
1772 { .driver_data = MT_CLS_3M,
1773 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1774 USB_DEVICE_ID_3M1968) },
1775 { .driver_data = MT_CLS_3M,
1776 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1777 USB_DEVICE_ID_3M2256) },
1778 { .driver_data = MT_CLS_3M,
1779 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1780 USB_DEVICE_ID_3M3266) },
1781
1782 /* Alps devices */
1783 { .driver_data = MT_CLS_WIN_8_DUAL,
1784 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1785 USB_VENDOR_ID_ALPS_JP,
1786 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) },
1787 { .driver_data = MT_CLS_WIN_8_DUAL,
1788 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1789 USB_VENDOR_ID_ALPS_JP,
1790 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) },
1791 { .driver_data = MT_CLS_WIN_8_DUAL,
1792 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1793 USB_VENDOR_ID_ALPS_JP,
1794 HID_DEVICE_ID_ALPS_1222) },
1795
1796 /* Lenovo X1 TAB Gen 2 */
1797 { .driver_data = MT_CLS_WIN_8_DUAL,
1798 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1799 USB_VENDOR_ID_LENOVO,
1800 USB_DEVICE_ID_LENOVO_X1_TAB) },
1801
1802 /* Anton devices */
1803 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1804 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1805 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1806
1807 /* Asus T304UA */
1808 { .driver_data = MT_CLS_ASUS,
1809 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1810 USB_VENDOR_ID_ASUSTEK,
1811 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
1812
1813 /* Atmel panels */
1814 { .driver_data = MT_CLS_SERIAL,
1815 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1816 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1817
1818 /* Baanto multitouch devices */
1819 { .driver_data = MT_CLS_NSMU,
1820 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1821 USB_DEVICE_ID_BAANTO_MT_190W2) },
1822
1823 /* Cando panels */
1824 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1825 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1826 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1827 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1828 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1829 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1830
1831 /* Chunghwa Telecom touch panels */
1832 { .driver_data = MT_CLS_NSMU,
1833 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1834 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1835
1836 /* Cirque devices */
1837 { .driver_data = MT_CLS_WIN_8_DUAL,
1838 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1839 I2C_VENDOR_ID_CIRQUE,
1840 I2C_PRODUCT_ID_CIRQUE_121F) },
1841
1842 /* CJTouch panels */
1843 { .driver_data = MT_CLS_NSMU,
1844 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1845 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1846 { .driver_data = MT_CLS_NSMU,
1847 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1848 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1849
1850 /* CVTouch panels */
1851 { .driver_data = MT_CLS_NSMU,
1852 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1853 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1854
1855 /* eGalax devices (resistive) */
1856 { .driver_data = MT_CLS_EGALAX,
1857 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1858 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1859 { .driver_data = MT_CLS_EGALAX,
1860 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1861 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1862
1863 /* eGalax devices (capacitive) */
1864 { .driver_data = MT_CLS_EGALAX_SERIAL,
1865 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1866 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1867 { .driver_data = MT_CLS_EGALAX,
1868 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1869 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1870 { .driver_data = MT_CLS_EGALAX_SERIAL,
1871 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1872 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1873 { .driver_data = MT_CLS_EGALAX_SERIAL,
1874 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1875 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1876 { .driver_data = MT_CLS_EGALAX_SERIAL,
1877 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1878 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1879 { .driver_data = MT_CLS_EGALAX_SERIAL,
1880 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1881 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1882 { .driver_data = MT_CLS_EGALAX,
1883 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1884 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1885 { .driver_data = MT_CLS_EGALAX,
1886 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1887 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1888 { .driver_data = MT_CLS_EGALAX_SERIAL,
1889 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1890 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1891 { .driver_data = MT_CLS_EGALAX,
1892 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1893 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1894 { .driver_data = MT_CLS_EGALAX,
1895 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1896 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1897 { .driver_data = MT_CLS_EGALAX,
1898 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1899 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1900 { .driver_data = MT_CLS_EGALAX,
1901 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1902 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1903 { .driver_data = MT_CLS_EGALAX_SERIAL,
1904 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1905 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1906 { .driver_data = MT_CLS_EGALAX_SERIAL,
1907 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1908 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1909 { .driver_data = MT_CLS_EGALAX_SERIAL,
1910 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1911 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1912 { .driver_data = MT_CLS_EGALAX,
1913 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1914 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) },
1915
1916 /* Elitegroup panel */
1917 { .driver_data = MT_CLS_SERIAL,
1918 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1919 USB_DEVICE_ID_ELITEGROUP_05D8) },
1920
1921 /* Flatfrog Panels */
1922 { .driver_data = MT_CLS_FLATFROG,
1923 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1924 USB_DEVICE_ID_MULTITOUCH_3200) },
1925
1926 /* FocalTech Panels */
1927 { .driver_data = MT_CLS_SERIAL,
1928 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1929 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1930
1931 /* GeneralTouch panel */
1932 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1933 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1934 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1935 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1936 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1937 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1938 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1939 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1940 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1941 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1942 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1943 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1944 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1945 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1946 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1947 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1948 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1949 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1950 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1951 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1952 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1953
1954 /* Gametel game controller */
1955 { .driver_data = MT_CLS_NSMU,
1956 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1957 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1958
1959 /* GoodTouch panels */
1960 { .driver_data = MT_CLS_NSMU,
1961 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1962 USB_DEVICE_ID_GOODTOUCH_000f) },
1963
1964 /* Hanvon panels */
1965 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1966 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1967 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1968
1969 /* Ilitek dual touch panel */
1970 { .driver_data = MT_CLS_NSMU,
1971 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1972 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1973
1974 /* LG Melfas panel */
1975 { .driver_data = MT_CLS_LG,
1976 HID_USB_DEVICE(USB_VENDOR_ID_LG,
1977 USB_DEVICE_ID_LG_MELFAS_MT) },
1978 { .driver_data = MT_CLS_LG,
1979 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC,
1980 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) },
1981
1982 /* MosArt panels */
1983 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1984 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1985 USB_DEVICE_ID_ASUS_T91MT)},
1986 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1987 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1988 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1989 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1990 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1991 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1992
1993 /* Novatek Panel */
1994 { .driver_data = MT_CLS_NSMU,
1995 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1996 USB_DEVICE_ID_NOVATEK_PCT) },
1997
1998 /* Ntrig Panel */
1999 { .driver_data = MT_CLS_NSMU,
2000 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2001 USB_VENDOR_ID_NTRIG, 0x1b05) },
2002
2003 /* Panasonic panels */
2004 { .driver_data = MT_CLS_PANASONIC,
2005 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
2006 USB_DEVICE_ID_PANABOARD_UBT780) },
2007 { .driver_data = MT_CLS_PANASONIC,
2008 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
2009 USB_DEVICE_ID_PANABOARD_UBT880) },
2010
2011 /* PixArt optical touch screen */
2012 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2013 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2014 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
2015 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2016 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2017 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
2018 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2019 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2020 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
2021
2022 /* PixCir-based panels */
2023 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
2024 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
2025 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
2026
2027 /* Quanta-based panels */
2028 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
2029 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
2030 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
2031
2032 /* Razer touchpads */
2033 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH,
2034 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2035 USB_VENDOR_ID_SYNAPTICS, 0x8323) },
2036
2037 /* Stantum panels */
2038 { .driver_data = MT_CLS_CONFIDENCE,
2039 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
2040 USB_DEVICE_ID_MTP_STM)},
2041
2042 /* TopSeed panels */
2043 { .driver_data = MT_CLS_TOPSEED,
2044 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
2045 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
2046
2047 /* Touch International panels */
2048 { .driver_data = MT_CLS_NSMU,
2049 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
2050 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
2051
2052 /* Unitec panels */
2053 { .driver_data = MT_CLS_NSMU,
2054 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2055 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
2056 { .driver_data = MT_CLS_NSMU,
2057 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2058 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
2059
2060 /* VTL panels */
2061 { .driver_data = MT_CLS_VTL,
2062 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
2063 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
2064
2065 /* Wistron panels */
2066 { .driver_data = MT_CLS_NSMU,
2067 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
2068 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
2069
2070 /* XAT */
2071 { .driver_data = MT_CLS_NSMU,
2072 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
2073 USB_DEVICE_ID_XAT_CSR) },
2074
2075 /* Xiroku */
2076 { .driver_data = MT_CLS_NSMU,
2077 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2078 USB_DEVICE_ID_XIROKU_SPX) },
2079 { .driver_data = MT_CLS_NSMU,
2080 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2081 USB_DEVICE_ID_XIROKU_MPX) },
2082 { .driver_data = MT_CLS_NSMU,
2083 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2084 USB_DEVICE_ID_XIROKU_CSR) },
2085 { .driver_data = MT_CLS_NSMU,
2086 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2087 USB_DEVICE_ID_XIROKU_SPX1) },
2088 { .driver_data = MT_CLS_NSMU,
2089 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2090 USB_DEVICE_ID_XIROKU_MPX1) },
2091 { .driver_data = MT_CLS_NSMU,
2092 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2093 USB_DEVICE_ID_XIROKU_CSR1) },
2094 { .driver_data = MT_CLS_NSMU,
2095 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2096 USB_DEVICE_ID_XIROKU_SPX2) },
2097 { .driver_data = MT_CLS_NSMU,
2098 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2099 USB_DEVICE_ID_XIROKU_MPX2) },
2100 { .driver_data = MT_CLS_NSMU,
2101 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2102 USB_DEVICE_ID_XIROKU_CSR2) },
2103
2104 /* Google MT devices */
2105 { .driver_data = MT_CLS_GOOGLE,
2106 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
2107 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
2108
2109 /* Generic MT device */
2110 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
2111
2112 /* Generic Win 8 certified MT device */
2113 { .driver_data = MT_CLS_WIN_8,
2114 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
2115 HID_ANY_ID, HID_ANY_ID) },
2116 { }
2117 };
2118 MODULE_DEVICE_TABLE(hid, mt_devices);
2119
2120 static const struct hid_usage_id mt_grabbed_usages[] = {
2121 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
2122 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
2123 };
2124
2125 static struct hid_driver mt_driver = {
2126 .name = "hid-multitouch",
2127 .id_table = mt_devices,
2128 .probe = mt_probe,
2129 .remove = mt_remove,
2130 .input_mapping = mt_input_mapping,
2131 .input_mapped = mt_input_mapped,
2132 .input_configured = mt_input_configured,
2133 .feature_mapping = mt_feature_mapping,
2134 .usage_table = mt_grabbed_usages,
2135 .event = mt_event,
2136 .report = mt_report,
2137 #ifdef CONFIG_PM
2138 .reset_resume = mt_reset_resume,
2139 .resume = mt_resume,
2140 #endif
2141 };
2142 module_hid_driver(mt_driver);
Linux with added FPC-III support