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HID: multitouch: Enable multi-input for Synaptics pointstick/touchpad device
[mirror_ubuntu-jammy-kernel.git] / drivers / hid / hid-multitouch.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * HID driver for multitouch panels
4 *
5 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
6 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
7 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
8 * Copyright (c) 2012-2013 Red Hat, Inc
9 *
10 * This code is partly based on hid-egalax.c:
11 *
12 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
13 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
14 * Copyright (c) 2010 Canonical, Ltd.
15 *
16 * This code is partly based on hid-3m-pct.c:
17 *
18 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
19 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
20 * Copyright (c) 2010 Canonical, Ltd.
21 */
22
23 /*
24 */
25
26 /*
27 * This driver is regularly tested thanks to the test suite in hid-tools[1].
28 * Please run these regression tests before patching this module so that
29 * your patch won't break existing known devices.
30 *
31 * [1] https://gitlab.freedesktop.org/libevdev/hid-tools
32 */
33
34 #include <linux/device.h>
35 #include <linux/hid.h>
36 #include <linux/module.h>
37 #include <linux/slab.h>
38 #include <linux/input/mt.h>
39 #include <linux/jiffies.h>
40 #include <linux/string.h>
41 #include <linux/timer.h>
42
43
44 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
45 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
46 MODULE_DESCRIPTION("HID multitouch panels");
47 MODULE_LICENSE("GPL");
48
49 #include "hid-ids.h"
50
51 /* quirks to control the device */
52 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0)
53 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1)
54 #define MT_QUIRK_CYPRESS BIT(2)
55 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3)
56 #define MT_QUIRK_ALWAYS_VALID BIT(4)
57 #define MT_QUIRK_VALID_IS_INRANGE BIT(5)
58 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6)
59 #define MT_QUIRK_CONFIDENCE BIT(7)
60 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8)
61 #define MT_QUIRK_NO_AREA BIT(9)
62 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10)
63 #define MT_QUIRK_HOVERING BIT(11)
64 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12)
65 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13)
66 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14)
67 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15)
68 #define MT_QUIRK_STICKY_FINGERS BIT(16)
69 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17)
70 #define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18)
71 #define MT_QUIRK_SEPARATE_APP_REPORT BIT(19)
72 #define MT_QUIRK_FORCE_MULTI_INPUT BIT(20)
73
74 #define MT_INPUTMODE_TOUCHSCREEN 0x02
75 #define MT_INPUTMODE_TOUCHPAD 0x03
76
77 #define MT_BUTTONTYPE_CLICKPAD 0
78
79 enum latency_mode {
80 HID_LATENCY_NORMAL = 0,
81 HID_LATENCY_HIGH = 1,
82 };
83
84 #define MT_IO_FLAGS_RUNNING 0
85 #define MT_IO_FLAGS_ACTIVE_SLOTS 1
86 #define MT_IO_FLAGS_PENDING_SLOTS 2
87
88 static const bool mtrue = true; /* default for true */
89 static const bool mfalse; /* default for false */
90 static const __s32 mzero; /* default for 0 */
91
92 #define DEFAULT_TRUE ((void *)&mtrue)
93 #define DEFAULT_FALSE ((void *)&mfalse)
94 #define DEFAULT_ZERO ((void *)&mzero)
95
96 struct mt_usages {
97 struct list_head list;
98 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a;
99 __s32 *contactid; /* the device ContactID assigned to this slot */
100 bool *tip_state; /* is the touch valid? */
101 bool *inrange_state; /* is the finger in proximity of the sensor? */
102 bool *confidence_state; /* is the touch made by a finger? */
103 };
104
105 struct mt_application {
106 struct list_head list;
107 unsigned int application;
108 unsigned int report_id;
109 struct list_head mt_usages; /* mt usages list */
110
111 __s32 quirks;
112
113 __s32 *scantime; /* scantime reported */
114 __s32 scantime_logical_max; /* max value for raw scantime */
115
116 __s32 *raw_cc; /* contact count in the report */
117 int left_button_state; /* left button state */
118 unsigned int mt_flags; /* flags to pass to input-mt */
119
120 unsigned long *pending_palm_slots; /* slots where we reported palm
121 * and need to release */
122
123 __u8 num_received; /* how many contacts we received */
124 __u8 num_expected; /* expected last contact index */
125 __u8 buttons_count; /* number of physical buttons per touchpad */
126 __u8 touches_by_report; /* how many touches are present in one report:
127 * 1 means we should use a serial protocol
128 * > 1 means hybrid (multitouch) protocol
129 */
130
131 __s32 dev_time; /* the scan time provided by the device */
132 unsigned long jiffies; /* the frame's jiffies */
133 int timestamp; /* the timestamp to be sent */
134 int prev_scantime; /* scantime reported previously */
135
136 bool have_contact_count;
137 };
138
139 struct mt_class {
140 __s32 name; /* MT_CLS */
141 __s32 quirks;
142 __s32 sn_move; /* Signal/noise ratio for move events */
143 __s32 sn_width; /* Signal/noise ratio for width events */
144 __s32 sn_height; /* Signal/noise ratio for height events */
145 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
146 __u8 maxcontacts;
147 bool is_indirect; /* true for touchpads */
148 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
149 };
150
151 struct mt_report_data {
152 struct list_head list;
153 struct hid_report *report;
154 struct mt_application *application;
155 bool is_mt_collection;
156 };
157
158 struct mt_device {
159 struct mt_class mtclass; /* our mt device class */
160 struct timer_list release_timer; /* to release sticky fingers */
161 struct hid_device *hdev; /* hid_device we're attached to */
162 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */
163 __u8 inputmode_value; /* InputMode HID feature value */
164 __u8 maxcontacts;
165 bool is_buttonpad; /* is this device a button pad? */
166 bool serial_maybe; /* need to check for serial protocol */
167
168 struct list_head applications;
169 struct list_head reports;
170 };
171
172 static void mt_post_parse_default_settings(struct mt_device *td,
173 struct mt_application *app);
174 static void mt_post_parse(struct mt_device *td, struct mt_application *app);
175
176 /* classes of device behavior */
177 #define MT_CLS_DEFAULT 0x0001
178
179 #define MT_CLS_SERIAL 0x0002
180 #define MT_CLS_CONFIDENCE 0x0003
181 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
182 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
183 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
184 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
185 /* reserved 0x0008 */
186 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
187 #define MT_CLS_NSMU 0x000a
188 /* reserved 0x0010 */
189 /* reserved 0x0011 */
190 #define MT_CLS_WIN_8 0x0012
191 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
192 /* reserved 0x0014 */
193 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015
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 #define MT_CLS_SMART_TECH 0x0113
211
212 #define MT_DEFAULT_MAXCONTACT 10
213 #define MT_MAX_MAXCONTACT 250
214
215 /*
216 * Resync device and local timestamps after that many microseconds without
217 * receiving data.
218 */
219 #define MAX_TIMESTAMP_INTERVAL 1000000
220
221 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
222 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
223
224 /*
225 * these device-dependent functions determine what slot corresponds
226 * to a valid contact that was just read.
227 */
228
229 static int cypress_compute_slot(struct mt_application *application,
230 struct mt_usages *slot)
231 {
232 if (*slot->contactid != 0 || application->num_received == 0)
233 return *slot->contactid;
234 else
235 return -1;
236 }
237
238 static const struct mt_class mt_classes[] = {
239 { .name = MT_CLS_DEFAULT,
240 .quirks = MT_QUIRK_ALWAYS_VALID |
241 MT_QUIRK_CONTACT_CNT_ACCURATE },
242 { .name = MT_CLS_NSMU,
243 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
244 { .name = MT_CLS_SERIAL,
245 .quirks = MT_QUIRK_ALWAYS_VALID},
246 { .name = MT_CLS_CONFIDENCE,
247 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
248 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
249 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
250 MT_QUIRK_SLOT_IS_CONTACTID },
251 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
252 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
253 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
254 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
255 .quirks = MT_QUIRK_VALID_IS_INRANGE |
256 MT_QUIRK_SLOT_IS_CONTACTID,
257 .maxcontacts = 2 },
258 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
259 .quirks = MT_QUIRK_VALID_IS_INRANGE |
260 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
261 .maxcontacts = 2 },
262 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
263 .quirks = MT_QUIRK_VALID_IS_INRANGE |
264 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
265 { .name = MT_CLS_WIN_8,
266 .quirks = MT_QUIRK_ALWAYS_VALID |
267 MT_QUIRK_IGNORE_DUPLICATES |
268 MT_QUIRK_HOVERING |
269 MT_QUIRK_CONTACT_CNT_ACCURATE |
270 MT_QUIRK_STICKY_FINGERS |
271 MT_QUIRK_WIN8_PTP_BUTTONS,
272 .export_all_inputs = true },
273 { .name = MT_CLS_EXPORT_ALL_INPUTS,
274 .quirks = MT_QUIRK_ALWAYS_VALID |
275 MT_QUIRK_CONTACT_CNT_ACCURATE,
276 .export_all_inputs = true },
277 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
278 .quirks = MT_QUIRK_ALWAYS_VALID |
279 MT_QUIRK_IGNORE_DUPLICATES |
280 MT_QUIRK_HOVERING |
281 MT_QUIRK_CONTACT_CNT_ACCURATE |
282 MT_QUIRK_STICKY_FINGERS |
283 MT_QUIRK_WIN8_PTP_BUTTONS |
284 MT_QUIRK_FORCE_MULTI_INPUT,
285 .export_all_inputs = true },
286
287 /*
288 * vendor specific classes
289 */
290 { .name = MT_CLS_3M,
291 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
292 MT_QUIRK_SLOT_IS_CONTACTID |
293 MT_QUIRK_TOUCH_SIZE_SCALING,
294 .sn_move = 2048,
295 .sn_width = 128,
296 .sn_height = 128,
297 .maxcontacts = 60,
298 },
299 { .name = MT_CLS_EGALAX,
300 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
301 MT_QUIRK_VALID_IS_INRANGE,
302 .sn_move = 4096,
303 .sn_pressure = 32,
304 },
305 { .name = MT_CLS_EGALAX_SERIAL,
306 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
307 MT_QUIRK_ALWAYS_VALID,
308 .sn_move = 4096,
309 .sn_pressure = 32,
310 },
311 { .name = MT_CLS_TOPSEED,
312 .quirks = MT_QUIRK_ALWAYS_VALID,
313 .is_indirect = true,
314 .maxcontacts = 2,
315 },
316 { .name = MT_CLS_PANASONIC,
317 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
318 .maxcontacts = 4 },
319 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
320 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
321 MT_QUIRK_VALID_IS_INRANGE |
322 MT_QUIRK_SLOT_IS_CONTACTID,
323 .maxcontacts = 2
324 },
325 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
326 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
327 MT_QUIRK_SLOT_IS_CONTACTID
328 },
329
330 { .name = MT_CLS_FLATFROG,
331 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
332 MT_QUIRK_NO_AREA,
333 .sn_move = 2048,
334 .maxcontacts = 40,
335 },
336 { .name = MT_CLS_LG,
337 .quirks = MT_QUIRK_ALWAYS_VALID |
338 MT_QUIRK_FIX_CONST_CONTACT_ID |
339 MT_QUIRK_IGNORE_DUPLICATES |
340 MT_QUIRK_HOVERING |
341 MT_QUIRK_CONTACT_CNT_ACCURATE },
342 { .name = MT_CLS_ASUS,
343 .quirks = MT_QUIRK_ALWAYS_VALID |
344 MT_QUIRK_CONTACT_CNT_ACCURATE |
345 MT_QUIRK_ASUS_CUSTOM_UP },
346 { .name = MT_CLS_VTL,
347 .quirks = MT_QUIRK_ALWAYS_VALID |
348 MT_QUIRK_CONTACT_CNT_ACCURATE |
349 MT_QUIRK_FORCE_GET_FEATURE,
350 },
351 { .name = MT_CLS_GOOGLE,
352 .quirks = MT_QUIRK_ALWAYS_VALID |
353 MT_QUIRK_CONTACT_CNT_ACCURATE |
354 MT_QUIRK_SLOT_IS_CONTACTID |
355 MT_QUIRK_HOVERING
356 },
357 { .name = MT_CLS_RAZER_BLADE_STEALTH,
358 .quirks = MT_QUIRK_ALWAYS_VALID |
359 MT_QUIRK_IGNORE_DUPLICATES |
360 MT_QUIRK_HOVERING |
361 MT_QUIRK_CONTACT_CNT_ACCURATE |
362 MT_QUIRK_WIN8_PTP_BUTTONS,
363 },
364 { .name = MT_CLS_SMART_TECH,
365 .quirks = MT_QUIRK_ALWAYS_VALID |
366 MT_QUIRK_IGNORE_DUPLICATES |
367 MT_QUIRK_CONTACT_CNT_ACCURATE |
368 MT_QUIRK_SEPARATE_APP_REPORT,
369 },
370 { }
371 };
372
373 static ssize_t mt_show_quirks(struct device *dev,
374 struct device_attribute *attr,
375 char *buf)
376 {
377 struct hid_device *hdev = to_hid_device(dev);
378 struct mt_device *td = hid_get_drvdata(hdev);
379
380 return sprintf(buf, "%u\n", td->mtclass.quirks);
381 }
382
383 static ssize_t mt_set_quirks(struct device *dev,
384 struct device_attribute *attr,
385 const char *buf, size_t count)
386 {
387 struct hid_device *hdev = to_hid_device(dev);
388 struct mt_device *td = hid_get_drvdata(hdev);
389 struct mt_application *application;
390
391 unsigned long val;
392
393 if (kstrtoul(buf, 0, &val))
394 return -EINVAL;
395
396 td->mtclass.quirks = val;
397
398 list_for_each_entry(application, &td->applications, list) {
399 application->quirks = val;
400 if (!application->have_contact_count)
401 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
402 }
403
404 return count;
405 }
406
407 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
408
409 static struct attribute *sysfs_attrs[] = {
410 &dev_attr_quirks.attr,
411 NULL
412 };
413
414 static const struct attribute_group mt_attribute_group = {
415 .attrs = sysfs_attrs
416 };
417
418 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
419 {
420 int ret;
421 u32 size = hid_report_len(report);
422 u8 *buf;
423
424 /*
425 * Do not fetch the feature report if the device has been explicitly
426 * marked as non-capable.
427 */
428 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS)
429 return;
430
431 buf = hid_alloc_report_buf(report, GFP_KERNEL);
432 if (!buf)
433 return;
434
435 ret = hid_hw_raw_request(hdev, report->id, buf, size,
436 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
437 if (ret < 0) {
438 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
439 report->id);
440 } else {
441 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
442 size, 0);
443 if (ret)
444 dev_warn(&hdev->dev, "failed to report feature\n");
445 }
446
447 kfree(buf);
448 }
449
450 static void mt_feature_mapping(struct hid_device *hdev,
451 struct hid_field *field, struct hid_usage *usage)
452 {
453 struct mt_device *td = hid_get_drvdata(hdev);
454
455 switch (usage->hid) {
456 case HID_DG_CONTACTMAX:
457 mt_get_feature(hdev, field->report);
458
459 td->maxcontacts = field->value[0];
460 if (!td->maxcontacts &&
461 field->logical_maximum <= MT_MAX_MAXCONTACT)
462 td->maxcontacts = field->logical_maximum;
463 if (td->mtclass.maxcontacts)
464 /* check if the maxcontacts is given by the class */
465 td->maxcontacts = td->mtclass.maxcontacts;
466
467 break;
468 case HID_DG_BUTTONTYPE:
469 if (usage->usage_index >= field->report_count) {
470 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
471 break;
472 }
473
474 mt_get_feature(hdev, field->report);
475 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
476 td->is_buttonpad = true;
477
478 break;
479 case 0xff0000c5:
480 /* Retrieve the Win8 blob once to enable some devices */
481 if (usage->usage_index == 0)
482 mt_get_feature(hdev, field->report);
483 break;
484 }
485 }
486
487 static void set_abs(struct input_dev *input, unsigned int code,
488 struct hid_field *field, int snratio)
489 {
490 int fmin = field->logical_minimum;
491 int fmax = field->logical_maximum;
492 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
493 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
494 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
495 }
496
497 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev,
498 struct mt_application *application)
499 {
500 struct mt_usages *usage;
501
502 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL);
503 if (!usage)
504 return NULL;
505
506 /* set some defaults so we do not need to check for null pointers */
507 usage->x = DEFAULT_ZERO;
508 usage->y = DEFAULT_ZERO;
509 usage->cx = DEFAULT_ZERO;
510 usage->cy = DEFAULT_ZERO;
511 usage->p = DEFAULT_ZERO;
512 usage->w = DEFAULT_ZERO;
513 usage->h = DEFAULT_ZERO;
514 usage->a = DEFAULT_ZERO;
515 usage->contactid = DEFAULT_ZERO;
516 usage->tip_state = DEFAULT_FALSE;
517 usage->inrange_state = DEFAULT_FALSE;
518 usage->confidence_state = DEFAULT_TRUE;
519
520 list_add_tail(&usage->list, &application->mt_usages);
521
522 return usage;
523 }
524
525 static struct mt_application *mt_allocate_application(struct mt_device *td,
526 struct hid_report *report)
527 {
528 unsigned int application = report->application;
529 struct mt_application *mt_application;
530
531 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application),
532 GFP_KERNEL);
533 if (!mt_application)
534 return NULL;
535
536 mt_application->application = application;
537 INIT_LIST_HEAD(&mt_application->mt_usages);
538
539 if (application == HID_DG_TOUCHSCREEN)
540 mt_application->mt_flags |= INPUT_MT_DIRECT;
541
542 /*
543 * Model touchscreens providing buttons as touchpads.
544 */
545 if (application == HID_DG_TOUCHPAD) {
546 mt_application->mt_flags |= INPUT_MT_POINTER;
547 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
548 }
549
550 mt_application->scantime = DEFAULT_ZERO;
551 mt_application->raw_cc = DEFAULT_ZERO;
552 mt_application->quirks = td->mtclass.quirks;
553 mt_application->report_id = report->id;
554
555 list_add_tail(&mt_application->list, &td->applications);
556
557 return mt_application;
558 }
559
560 static struct mt_application *mt_find_application(struct mt_device *td,
561 struct hid_report *report)
562 {
563 unsigned int application = report->application;
564 struct mt_application *tmp, *mt_application = NULL;
565
566 list_for_each_entry(tmp, &td->applications, list) {
567 if (application == tmp->application) {
568 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) ||
569 tmp->report_id == report->id) {
570 mt_application = tmp;
571 break;
572 }
573 }
574 }
575
576 if (!mt_application)
577 mt_application = mt_allocate_application(td, report);
578
579 return mt_application;
580 }
581
582 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td,
583 struct hid_report *report)
584 {
585 struct mt_report_data *rdata;
586 struct hid_field *field;
587 int r, n;
588
589 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL);
590 if (!rdata)
591 return NULL;
592
593 rdata->report = report;
594 rdata->application = mt_find_application(td, report);
595
596 if (!rdata->application) {
597 devm_kfree(&td->hdev->dev, rdata);
598 return NULL;
599 }
600
601 for (r = 0; r < report->maxfield; r++) {
602 field = report->field[r];
603
604 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
605 continue;
606
607 for (n = 0; n < field->report_count; n++) {
608 if (field->usage[n].hid == HID_DG_CONTACTID)
609 rdata->is_mt_collection = true;
610 }
611 }
612
613 list_add_tail(&rdata->list, &td->reports);
614
615 return rdata;
616 }
617
618 static struct mt_report_data *mt_find_report_data(struct mt_device *td,
619 struct hid_report *report)
620 {
621 struct mt_report_data *tmp, *rdata = NULL;
622
623 list_for_each_entry(tmp, &td->reports, list) {
624 if (report == tmp->report) {
625 rdata = tmp;
626 break;
627 }
628 }
629
630 if (!rdata)
631 rdata = mt_allocate_report_data(td, report);
632
633 return rdata;
634 }
635
636 static void mt_store_field(struct hid_device *hdev,
637 struct mt_application *application,
638 __s32 *value,
639 size_t offset)
640 {
641 struct mt_usages *usage;
642 __s32 **target;
643
644 if (list_empty(&application->mt_usages))
645 usage = mt_allocate_usage(hdev, application);
646 else
647 usage = list_last_entry(&application->mt_usages,
648 struct mt_usages,
649 list);
650
651 if (!usage)
652 return;
653
654 target = (__s32 **)((char *)usage + offset);
655
656 /* the value has already been filled, create a new slot */
657 if (*target != DEFAULT_TRUE &&
658 *target != DEFAULT_FALSE &&
659 *target != DEFAULT_ZERO) {
660 if (usage->contactid == DEFAULT_ZERO ||
661 usage->x == DEFAULT_ZERO ||
662 usage->y == DEFAULT_ZERO) {
663 hid_dbg(hdev,
664 "ignoring duplicate usage on incomplete");
665 return;
666 }
667 usage = mt_allocate_usage(hdev, application);
668 if (!usage)
669 return;
670
671 target = (__s32 **)((char *)usage + offset);
672 }
673
674 *target = value;
675 }
676
677 #define MT_STORE_FIELD(__name) \
678 mt_store_field(hdev, app, \
679 &field->value[usage->usage_index], \
680 offsetof(struct mt_usages, __name))
681
682 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
683 struct hid_field *field, struct hid_usage *usage,
684 unsigned long **bit, int *max, struct mt_application *app)
685 {
686 struct mt_device *td = hid_get_drvdata(hdev);
687 struct mt_class *cls = &td->mtclass;
688 int code;
689 struct hid_usage *prev_usage = NULL;
690
691 /*
692 * Model touchscreens providing buttons as touchpads.
693 */
694 if (field->application == HID_DG_TOUCHSCREEN &&
695 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
696 app->mt_flags |= INPUT_MT_POINTER;
697 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
698 }
699
700 /* count the buttons on touchpads */
701 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
702 app->buttons_count++;
703
704 if (usage->usage_index)
705 prev_usage = &field->usage[usage->usage_index - 1];
706
707 switch (usage->hid & HID_USAGE_PAGE) {
708
709 case HID_UP_GENDESK:
710 switch (usage->hid) {
711 case HID_GD_X:
712 if (prev_usage && (prev_usage->hid == usage->hid)) {
713 code = ABS_MT_TOOL_X;
714 MT_STORE_FIELD(cx);
715 } else {
716 code = ABS_MT_POSITION_X;
717 MT_STORE_FIELD(x);
718 }
719
720 set_abs(hi->input, code, field, cls->sn_move);
721
722 /*
723 * A system multi-axis that exports X and Y has a high
724 * chance of being used directly on a surface
725 */
726 if (field->application == HID_GD_SYSTEM_MULTIAXIS) {
727 __set_bit(INPUT_PROP_DIRECT,
728 hi->input->propbit);
729 input_set_abs_params(hi->input,
730 ABS_MT_TOOL_TYPE,
731 MT_TOOL_DIAL,
732 MT_TOOL_DIAL, 0, 0);
733 }
734
735 return 1;
736 case HID_GD_Y:
737 if (prev_usage && (prev_usage->hid == usage->hid)) {
738 code = ABS_MT_TOOL_Y;
739 MT_STORE_FIELD(cy);
740 } else {
741 code = ABS_MT_POSITION_Y;
742 MT_STORE_FIELD(y);
743 }
744
745 set_abs(hi->input, code, field, cls->sn_move);
746
747 return 1;
748 }
749 return 0;
750
751 case HID_UP_DIGITIZER:
752 switch (usage->hid) {
753 case HID_DG_INRANGE:
754 if (app->quirks & MT_QUIRK_HOVERING) {
755 input_set_abs_params(hi->input,
756 ABS_MT_DISTANCE, 0, 1, 0, 0);
757 }
758 MT_STORE_FIELD(inrange_state);
759 return 1;
760 case HID_DG_CONFIDENCE:
761 if (cls->name == MT_CLS_WIN_8 &&
762 (field->application == HID_DG_TOUCHPAD ||
763 field->application == HID_DG_TOUCHSCREEN))
764 app->quirks |= MT_QUIRK_CONFIDENCE;
765
766 if (app->quirks & MT_QUIRK_CONFIDENCE)
767 input_set_abs_params(hi->input,
768 ABS_MT_TOOL_TYPE,
769 MT_TOOL_FINGER,
770 MT_TOOL_PALM, 0, 0);
771
772 MT_STORE_FIELD(confidence_state);
773 return 1;
774 case HID_DG_TIPSWITCH:
775 if (field->application != HID_GD_SYSTEM_MULTIAXIS)
776 input_set_capability(hi->input,
777 EV_KEY, BTN_TOUCH);
778 MT_STORE_FIELD(tip_state);
779 return 1;
780 case HID_DG_CONTACTID:
781 MT_STORE_FIELD(contactid);
782 app->touches_by_report++;
783 return 1;
784 case HID_DG_WIDTH:
785 if (!(app->quirks & MT_QUIRK_NO_AREA))
786 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
787 cls->sn_width);
788 MT_STORE_FIELD(w);
789 return 1;
790 case HID_DG_HEIGHT:
791 if (!(app->quirks & MT_QUIRK_NO_AREA)) {
792 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
793 cls->sn_height);
794
795 /*
796 * Only set ABS_MT_ORIENTATION if it is not
797 * already set by the HID_DG_AZIMUTH usage.
798 */
799 if (!test_bit(ABS_MT_ORIENTATION,
800 hi->input->absbit))
801 input_set_abs_params(hi->input,
802 ABS_MT_ORIENTATION, 0, 1, 0, 0);
803 }
804 MT_STORE_FIELD(h);
805 return 1;
806 case HID_DG_TIPPRESSURE:
807 set_abs(hi->input, ABS_MT_PRESSURE, field,
808 cls->sn_pressure);
809 MT_STORE_FIELD(p);
810 return 1;
811 case HID_DG_SCANTIME:
812 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
813 app->scantime = &field->value[usage->usage_index];
814 app->scantime_logical_max = field->logical_maximum;
815 return 1;
816 case HID_DG_CONTACTCOUNT:
817 app->have_contact_count = true;
818 app->raw_cc = &field->value[usage->usage_index];
819 return 1;
820 case HID_DG_AZIMUTH:
821 /*
822 * Azimuth has the range of [0, MAX) representing a full
823 * revolution. Set ABS_MT_ORIENTATION to a quarter of
824 * MAX according the definition of ABS_MT_ORIENTATION
825 */
826 input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
827 -field->logical_maximum / 4,
828 field->logical_maximum / 4,
829 cls->sn_move ?
830 field->logical_maximum / cls->sn_move : 0, 0);
831 MT_STORE_FIELD(a);
832 return 1;
833 case HID_DG_CONTACTMAX:
834 /* contact max are global to the report */
835 return -1;
836 case HID_DG_TOUCH:
837 /* Legacy devices use TIPSWITCH and not TOUCH.
838 * Let's just ignore this field. */
839 return -1;
840 }
841 /* let hid-input decide for the others */
842 return 0;
843
844 case HID_UP_BUTTON:
845 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
846 /*
847 * MS PTP spec says that external buttons left and right have
848 * usages 2 and 3.
849 */
850 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
851 field->application == HID_DG_TOUCHPAD &&
852 (usage->hid & HID_USAGE) > 1)
853 code--;
854
855 if (field->application == HID_GD_SYSTEM_MULTIAXIS)
856 code = BTN_0 + ((usage->hid - 1) & HID_USAGE);
857
858 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
859 if (!*bit)
860 return -1;
861 input_set_capability(hi->input, EV_KEY, code);
862 return 1;
863
864 case 0xff000000:
865 /* we do not want to map these: no input-oriented meaning */
866 return -1;
867 }
868
869 return 0;
870 }
871
872 static int mt_compute_slot(struct mt_device *td, struct mt_application *app,
873 struct mt_usages *slot,
874 struct input_dev *input)
875 {
876 __s32 quirks = app->quirks;
877
878 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
879 return *slot->contactid;
880
881 if (quirks & MT_QUIRK_CYPRESS)
882 return cypress_compute_slot(app, slot);
883
884 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
885 return app->num_received;
886
887 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
888 return *slot->contactid - 1;
889
890 return input_mt_get_slot_by_key(input, *slot->contactid);
891 }
892
893 static void mt_release_pending_palms(struct mt_device *td,
894 struct mt_application *app,
895 struct input_dev *input)
896 {
897 int slotnum;
898 bool need_sync = false;
899
900 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) {
901 clear_bit(slotnum, app->pending_palm_slots);
902
903 input_mt_slot(input, slotnum);
904 input_mt_report_slot_inactive(input);
905
906 need_sync = true;
907 }
908
909 if (need_sync) {
910 input_mt_sync_frame(input);
911 input_sync(input);
912 }
913 }
914
915 /*
916 * this function is called when a whole packet has been received and processed,
917 * so that it can decide what to send to the input layer.
918 */
919 static void mt_sync_frame(struct mt_device *td, struct mt_application *app,
920 struct input_dev *input)
921 {
922 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS)
923 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state);
924
925 input_mt_sync_frame(input);
926 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp);
927 input_sync(input);
928
929 mt_release_pending_palms(td, app, input);
930
931 app->num_received = 0;
932 app->left_button_state = 0;
933
934 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
935 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
936 else
937 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
938 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
939 }
940
941 static int mt_compute_timestamp(struct mt_application *app, __s32 value)
942 {
943 long delta = value - app->prev_scantime;
944 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies);
945
946 app->jiffies = jiffies;
947
948 if (delta < 0)
949 delta += app->scantime_logical_max;
950
951 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
952 delta *= 100;
953
954 if (jdelta > MAX_TIMESTAMP_INTERVAL)
955 /* No data received for a while, resync the timestamp. */
956 return 0;
957 else
958 return app->timestamp + delta;
959 }
960
961 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
962 struct hid_usage *usage, __s32 value)
963 {
964 /* we will handle the hidinput part later, now remains hiddev */
965 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
966 hid->hiddev_hid_event(hid, field, usage, value);
967
968 return 1;
969 }
970
971 static int mt_process_slot(struct mt_device *td, struct input_dev *input,
972 struct mt_application *app,
973 struct mt_usages *slot)
974 {
975 struct input_mt *mt = input->mt;
976 __s32 quirks = app->quirks;
977 bool valid = true;
978 bool confidence_state = true;
979 bool inrange_state = false;
980 int active;
981 int slotnum;
982 int tool = MT_TOOL_FINGER;
983
984 if (!slot)
985 return -EINVAL;
986
987 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
988 app->num_received >= app->num_expected)
989 return -EAGAIN;
990
991 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) {
992 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
993 valid = *slot->inrange_state;
994 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
995 valid = *slot->tip_state;
996 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
997 valid = *slot->confidence_state;
998
999 if (!valid)
1000 return 0;
1001 }
1002
1003 slotnum = mt_compute_slot(td, app, slot, input);
1004 if (slotnum < 0 || slotnum >= td->maxcontacts)
1005 return 0;
1006
1007 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
1008 struct input_mt_slot *i_slot = &mt->slots[slotnum];
1009
1010 if (input_mt_is_active(i_slot) &&
1011 input_mt_is_used(mt, i_slot))
1012 return -EAGAIN;
1013 }
1014
1015 if (quirks & MT_QUIRK_CONFIDENCE)
1016 confidence_state = *slot->confidence_state;
1017
1018 if (quirks & MT_QUIRK_HOVERING)
1019 inrange_state = *slot->inrange_state;
1020
1021 active = *slot->tip_state || inrange_state;
1022
1023 if (app->application == HID_GD_SYSTEM_MULTIAXIS)
1024 tool = MT_TOOL_DIAL;
1025 else if (unlikely(!confidence_state)) {
1026 tool = MT_TOOL_PALM;
1027 if (!active && mt &&
1028 input_mt_is_active(&mt->slots[slotnum])) {
1029 /*
1030 * The non-confidence was reported for
1031 * previously valid contact that is also no
1032 * longer valid. We can't simply report
1033 * lift-off as userspace will not be aware
1034 * of non-confidence, so we need to split
1035 * it into 2 events: active MT_TOOL_PALM
1036 * and a separate liftoff.
1037 */
1038 active = true;
1039 set_bit(slotnum, app->pending_palm_slots);
1040 }
1041 }
1042
1043 input_mt_slot(input, slotnum);
1044 input_mt_report_slot_state(input, tool, active);
1045 if (active) {
1046 /* this finger is in proximity of the sensor */
1047 int wide = (*slot->w > *slot->h);
1048 int major = max(*slot->w, *slot->h);
1049 int minor = min(*slot->w, *slot->h);
1050 int orientation = wide;
1051 int max_azimuth;
1052 int azimuth;
1053
1054 if (slot->a != DEFAULT_ZERO) {
1055 /*
1056 * Azimuth is counter-clockwise and ranges from [0, MAX)
1057 * (a full revolution). Convert it to clockwise ranging
1058 * [-MAX/2, MAX/2].
1059 *
1060 * Note that ABS_MT_ORIENTATION require us to report
1061 * the limit of [-MAX/4, MAX/4], but the value can go
1062 * out of range to [-MAX/2, MAX/2] to report an upside
1063 * down ellipsis.
1064 */
1065 azimuth = *slot->a;
1066 max_azimuth = input_abs_get_max(input,
1067 ABS_MT_ORIENTATION);
1068 if (azimuth > max_azimuth * 2)
1069 azimuth -= max_azimuth * 4;
1070 orientation = -azimuth;
1071 }
1072
1073 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
1074 /*
1075 * divided by two to match visual scale of touch
1076 * for devices with this quirk
1077 */
1078 major = major >> 1;
1079 minor = minor >> 1;
1080 }
1081
1082 input_event(input, EV_ABS, ABS_MT_POSITION_X, *slot->x);
1083 input_event(input, EV_ABS, ABS_MT_POSITION_Y, *slot->y);
1084 input_event(input, EV_ABS, ABS_MT_TOOL_X, *slot->cx);
1085 input_event(input, EV_ABS, ABS_MT_TOOL_Y, *slot->cy);
1086 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state);
1087 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation);
1088 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p);
1089 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
1090 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
1091
1092 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
1093 }
1094
1095 return 0;
1096 }
1097
1098 static void mt_process_mt_event(struct hid_device *hid,
1099 struct mt_application *app,
1100 struct hid_field *field,
1101 struct hid_usage *usage,
1102 __s32 value,
1103 bool first_packet)
1104 {
1105 __s32 quirks = app->quirks;
1106 struct input_dev *input = field->hidinput->input;
1107
1108 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT))
1109 return;
1110
1111 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) {
1112
1113 /*
1114 * For Win8 PTP touchpads we should only look at
1115 * non finger/touch events in the first_packet of a
1116 * (possible) multi-packet frame.
1117 */
1118 if (!first_packet)
1119 return;
1120
1121 /*
1122 * For Win8 PTP touchpads we map both the clickpad click
1123 * and any "external" left buttons to BTN_LEFT if a
1124 * device claims to have both we need to report 1 for
1125 * BTN_LEFT if either is pressed, so we or all values
1126 * together and report the result in mt_sync_frame().
1127 */
1128 if (usage->type == EV_KEY && usage->code == BTN_LEFT) {
1129 app->left_button_state |= value;
1130 return;
1131 }
1132 }
1133
1134 input_event(input, usage->type, usage->code, value);
1135 }
1136
1137 static void mt_touch_report(struct hid_device *hid,
1138 struct mt_report_data *rdata)
1139 {
1140 struct mt_device *td = hid_get_drvdata(hid);
1141 struct hid_report *report = rdata->report;
1142 struct mt_application *app = rdata->application;
1143 struct hid_field *field;
1144 struct input_dev *input;
1145 struct mt_usages *slot;
1146 bool first_packet;
1147 unsigned count;
1148 int r, n;
1149 int scantime = 0;
1150 int contact_count = -1;
1151
1152 /* sticky fingers release in progress, abort */
1153 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1154 return;
1155
1156 scantime = *app->scantime;
1157 app->timestamp = mt_compute_timestamp(app, scantime);
1158 if (app->raw_cc != DEFAULT_ZERO)
1159 contact_count = *app->raw_cc;
1160
1161 /*
1162 * Includes multi-packet support where subsequent
1163 * packets are sent with zero contactcount.
1164 */
1165 if (contact_count >= 0) {
1166 /*
1167 * For Win8 PTPs the first packet (td->num_received == 0) may
1168 * have a contactcount of 0 if there only is a button event.
1169 * We double check that this is not a continuation packet
1170 * of a possible multi-packet frame be checking that the
1171 * timestamp has changed.
1172 */
1173 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
1174 app->num_received == 0 &&
1175 app->prev_scantime != scantime)
1176 app->num_expected = contact_count;
1177 /* A non 0 contact count always indicates a first packet */
1178 else if (contact_count)
1179 app->num_expected = contact_count;
1180 }
1181 app->prev_scantime = scantime;
1182
1183 first_packet = app->num_received == 0;
1184
1185 input = report->field[0]->hidinput->input;
1186
1187 list_for_each_entry(slot, &app->mt_usages, list) {
1188 if (!mt_process_slot(td, input, app, slot))
1189 app->num_received++;
1190 }
1191
1192 for (r = 0; r < report->maxfield; r++) {
1193 field = report->field[r];
1194 count = field->report_count;
1195
1196 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
1197 continue;
1198
1199 for (n = 0; n < count; n++)
1200 mt_process_mt_event(hid, app, field,
1201 &field->usage[n], field->value[n],
1202 first_packet);
1203 }
1204
1205 if (app->num_received >= app->num_expected)
1206 mt_sync_frame(td, app, input);
1207
1208 /*
1209 * Windows 8 specs says 2 things:
1210 * - once a contact has been reported, it has to be reported in each
1211 * subsequent report
1212 * - the report rate when fingers are present has to be at least
1213 * the refresh rate of the screen, 60 or 120 Hz
1214 *
1215 * I interprete this that the specification forces a report rate of
1216 * at least 60 Hz for a touchscreen to be certified.
1217 * Which means that if we do not get a report whithin 16 ms, either
1218 * something wrong happens, either the touchscreen forgets to send
1219 * a release. Taking a reasonable margin allows to remove issues
1220 * with USB communication or the load of the machine.
1221 *
1222 * Given that Win 8 devices are forced to send a release, this will
1223 * only affect laggish machines and the ones that have a firmware
1224 * defect.
1225 */
1226 if (app->quirks & MT_QUIRK_STICKY_FINGERS) {
1227 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1228 mod_timer(&td->release_timer,
1229 jiffies + msecs_to_jiffies(100));
1230 else
1231 del_timer(&td->release_timer);
1232 }
1233
1234 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1235 }
1236
1237 static int mt_touch_input_configured(struct hid_device *hdev,
1238 struct hid_input *hi,
1239 struct mt_application *app)
1240 {
1241 struct mt_device *td = hid_get_drvdata(hdev);
1242 struct mt_class *cls = &td->mtclass;
1243 struct input_dev *input = hi->input;
1244 int ret;
1245
1246 if (!td->maxcontacts)
1247 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
1248
1249 mt_post_parse(td, app);
1250 if (td->serial_maybe)
1251 mt_post_parse_default_settings(td, app);
1252
1253 if (cls->is_indirect)
1254 app->mt_flags |= INPUT_MT_POINTER;
1255
1256 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
1257 app->mt_flags |= INPUT_MT_DROP_UNUSED;
1258
1259 /* check for clickpads */
1260 if ((app->mt_flags & INPUT_MT_POINTER) &&
1261 (app->buttons_count == 1))
1262 td->is_buttonpad = true;
1263
1264 if (td->is_buttonpad)
1265 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
1266
1267 app->pending_palm_slots = devm_kcalloc(&hi->input->dev,
1268 BITS_TO_LONGS(td->maxcontacts),
1269 sizeof(long),
1270 GFP_KERNEL);
1271 if (!app->pending_palm_slots)
1272 return -ENOMEM;
1273
1274 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags);
1275 if (ret)
1276 return ret;
1277
1278 app->mt_flags = 0;
1279 return 0;
1280 }
1281
1282 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
1283 max, EV_KEY, (c))
1284 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
1285 struct hid_field *field, struct hid_usage *usage,
1286 unsigned long **bit, int *max)
1287 {
1288 struct mt_device *td = hid_get_drvdata(hdev);
1289 struct mt_application *application;
1290 struct mt_report_data *rdata;
1291
1292 rdata = mt_find_report_data(td, field->report);
1293 if (!rdata) {
1294 hid_err(hdev, "failed to allocate data for report\n");
1295 return 0;
1296 }
1297
1298 application = rdata->application;
1299
1300 /*
1301 * If mtclass.export_all_inputs is not set, only map fields from
1302 * TouchScreen or TouchPad collections. We need to ignore fields
1303 * that belong to other collections such as Mouse that might have
1304 * the same GenericDesktop usages.
1305 */
1306 if (!td->mtclass.export_all_inputs &&
1307 field->application != HID_DG_TOUCHSCREEN &&
1308 field->application != HID_DG_PEN &&
1309 field->application != HID_DG_TOUCHPAD &&
1310 field->application != HID_GD_KEYBOARD &&
1311 field->application != HID_GD_SYSTEM_CONTROL &&
1312 field->application != HID_CP_CONSUMER_CONTROL &&
1313 field->application != HID_GD_WIRELESS_RADIO_CTLS &&
1314 field->application != HID_GD_SYSTEM_MULTIAXIS &&
1315 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1316 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP))
1317 return -1;
1318
1319 /*
1320 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
1321 * touchpad report descriptor. We need to treat these as an array to
1322 * map usages to input keys.
1323 */
1324 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1325 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
1326 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
1327 set_bit(EV_REP, hi->input->evbit);
1328 if (field->flags & HID_MAIN_ITEM_VARIABLE)
1329 field->flags &= ~HID_MAIN_ITEM_VARIABLE;
1330 switch (usage->hid & HID_USAGE) {
1331 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break;
1332 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break;
1333 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break;
1334 case 0x6b: mt_map_key_clear(KEY_F21); break;
1335 case 0x6c: mt_map_key_clear(KEY_SLEEP); break;
1336 default:
1337 return -1;
1338 }
1339 return 1;
1340 }
1341
1342 if (rdata->is_mt_collection)
1343 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max,
1344 application);
1345
1346 /*
1347 * some egalax touchscreens have "application == DG_TOUCHSCREEN"
1348 * for the stylus. Overwrite the hid_input application
1349 */
1350 if (field->physical == HID_DG_STYLUS)
1351 hi->application = HID_DG_STYLUS;
1352
1353 /* let hid-core decide for the others */
1354 return 0;
1355 }
1356
1357 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
1358 struct hid_field *field, struct hid_usage *usage,
1359 unsigned long **bit, int *max)
1360 {
1361 struct mt_device *td = hid_get_drvdata(hdev);
1362 struct mt_report_data *rdata;
1363
1364 rdata = mt_find_report_data(td, field->report);
1365 if (rdata && rdata->is_mt_collection) {
1366 /* We own these mappings, tell hid-input to ignore them */
1367 return -1;
1368 }
1369
1370 /* let hid-core decide for the others */
1371 return 0;
1372 }
1373
1374 static int mt_event(struct hid_device *hid, struct hid_field *field,
1375 struct hid_usage *usage, __s32 value)
1376 {
1377 struct mt_device *td = hid_get_drvdata(hid);
1378 struct mt_report_data *rdata;
1379
1380 rdata = mt_find_report_data(td, field->report);
1381 if (rdata && rdata->is_mt_collection)
1382 return mt_touch_event(hid, field, usage, value);
1383
1384 return 0;
1385 }
1386
1387 static void mt_report(struct hid_device *hid, struct hid_report *report)
1388 {
1389 struct mt_device *td = hid_get_drvdata(hid);
1390 struct hid_field *field = report->field[0];
1391 struct mt_report_data *rdata;
1392
1393 if (!(hid->claimed & HID_CLAIMED_INPUT))
1394 return;
1395
1396 rdata = mt_find_report_data(td, report);
1397 if (rdata && rdata->is_mt_collection)
1398 return mt_touch_report(hid, rdata);
1399
1400 if (field && field->hidinput && field->hidinput->input)
1401 input_sync(field->hidinput->input);
1402 }
1403
1404 static bool mt_need_to_apply_feature(struct hid_device *hdev,
1405 struct hid_field *field,
1406 struct hid_usage *usage,
1407 enum latency_mode latency,
1408 bool surface_switch,
1409 bool button_switch,
1410 bool *inputmode_found)
1411 {
1412 struct mt_device *td = hid_get_drvdata(hdev);
1413 struct mt_class *cls = &td->mtclass;
1414 struct hid_report *report = field->report;
1415 unsigned int index = usage->usage_index;
1416 char *buf;
1417 u32 report_len;
1418 int max;
1419
1420 switch (usage->hid) {
1421 case HID_DG_INPUTMODE:
1422 /*
1423 * Some elan panels wrongly declare 2 input mode features,
1424 * and silently ignore when we set the value in the second
1425 * field. Skip the second feature and hope for the best.
1426 */
1427 if (*inputmode_found)
1428 return false;
1429
1430 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1431 report_len = hid_report_len(report);
1432 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1433 if (!buf) {
1434 hid_err(hdev,
1435 "failed to allocate buffer for report\n");
1436 return false;
1437 }
1438 hid_hw_raw_request(hdev, report->id, buf, report_len,
1439 HID_FEATURE_REPORT,
1440 HID_REQ_GET_REPORT);
1441 kfree(buf);
1442 }
1443
1444 field->value[index] = td->inputmode_value;
1445 *inputmode_found = true;
1446 return true;
1447
1448 case HID_DG_CONTACTMAX:
1449 if (cls->maxcontacts) {
1450 max = min_t(int, field->logical_maximum,
1451 cls->maxcontacts);
1452 if (field->value[index] != max) {
1453 field->value[index] = max;
1454 return true;
1455 }
1456 }
1457 break;
1458
1459 case HID_DG_LATENCYMODE:
1460 field->value[index] = latency;
1461 return true;
1462
1463 case HID_DG_SURFACESWITCH:
1464 field->value[index] = surface_switch;
1465 return true;
1466
1467 case HID_DG_BUTTONSWITCH:
1468 field->value[index] = button_switch;
1469 return true;
1470 }
1471
1472 return false; /* no need to update the report */
1473 }
1474
1475 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency,
1476 bool surface_switch, bool button_switch)
1477 {
1478 struct hid_report_enum *rep_enum;
1479 struct hid_report *rep;
1480 struct hid_usage *usage;
1481 int i, j;
1482 bool update_report;
1483 bool inputmode_found = false;
1484
1485 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
1486 list_for_each_entry(rep, &rep_enum->report_list, list) {
1487 update_report = false;
1488
1489 for (i = 0; i < rep->maxfield; i++) {
1490 /* Ignore if report count is out of bounds. */
1491 if (rep->field[i]->report_count < 1)
1492 continue;
1493
1494 for (j = 0; j < rep->field[i]->maxusage; j++) {
1495 usage = &rep->field[i]->usage[j];
1496
1497 if (mt_need_to_apply_feature(hdev,
1498 rep->field[i],
1499 usage,
1500 latency,
1501 surface_switch,
1502 button_switch,
1503 &inputmode_found))
1504 update_report = true;
1505 }
1506 }
1507
1508 if (update_report)
1509 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT);
1510 }
1511 }
1512
1513 static void mt_post_parse_default_settings(struct mt_device *td,
1514 struct mt_application *app)
1515 {
1516 __s32 quirks = app->quirks;
1517
1518 /* unknown serial device needs special quirks */
1519 if (list_is_singular(&app->mt_usages)) {
1520 quirks |= MT_QUIRK_ALWAYS_VALID;
1521 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1522 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1523 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1524 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1525 }
1526
1527 app->quirks = quirks;
1528 }
1529
1530 static void mt_post_parse(struct mt_device *td, struct mt_application *app)
1531 {
1532 if (!app->have_contact_count)
1533 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1534 }
1535
1536 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1537 {
1538 struct mt_device *td = hid_get_drvdata(hdev);
1539 char *name;
1540 const char *suffix = NULL;
1541 struct mt_report_data *rdata;
1542 struct mt_application *mt_application = NULL;
1543 struct hid_report *report;
1544 int ret;
1545
1546 list_for_each_entry(report, &hi->reports, hidinput_list) {
1547 rdata = mt_find_report_data(td, report);
1548 if (!rdata) {
1549 hid_err(hdev, "failed to allocate data for report\n");
1550 return -ENOMEM;
1551 }
1552
1553 mt_application = rdata->application;
1554
1555 if (rdata->is_mt_collection) {
1556 ret = mt_touch_input_configured(hdev, hi,
1557 mt_application);
1558 if (ret)
1559 return ret;
1560 }
1561 }
1562
1563 switch (hi->application) {
1564 case HID_GD_KEYBOARD:
1565 case HID_GD_KEYPAD:
1566 case HID_GD_MOUSE:
1567 case HID_DG_TOUCHPAD:
1568 case HID_GD_SYSTEM_CONTROL:
1569 case HID_CP_CONSUMER_CONTROL:
1570 case HID_GD_WIRELESS_RADIO_CTLS:
1571 case HID_GD_SYSTEM_MULTIAXIS:
1572 /* already handled by hid core */
1573 break;
1574 case HID_DG_TOUCHSCREEN:
1575 /* we do not set suffix = "Touchscreen" */
1576 hi->input->name = hdev->name;
1577 break;
1578 case HID_DG_STYLUS:
1579 /* force BTN_STYLUS to allow tablet matching in udev */
1580 __set_bit(BTN_STYLUS, hi->input->keybit);
1581 break;
1582 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1583 suffix = "Custom Media Keys";
1584 break;
1585 case HID_DG_PEN:
1586 suffix = "Stylus";
1587 break;
1588 default:
1589 suffix = "UNKNOWN";
1590 break;
1591 }
1592
1593 if (suffix) {
1594 name = devm_kzalloc(&hi->input->dev,
1595 strlen(hdev->name) + strlen(suffix) + 2,
1596 GFP_KERNEL);
1597 if (name) {
1598 sprintf(name, "%s %s", hdev->name, suffix);
1599 hi->input->name = name;
1600 }
1601 }
1602
1603 return 0;
1604 }
1605
1606 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1607 {
1608 if (field->usage[0].hid != usage ||
1609 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1610 return;
1611
1612 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1613 field->flags |= HID_MAIN_ITEM_VARIABLE;
1614 }
1615
1616 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1617 {
1618 struct hid_report *report;
1619 int i;
1620
1621 list_for_each_entry(report,
1622 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1623 list) {
1624
1625 if (!report->maxfield)
1626 continue;
1627
1628 for (i = 0; i < report->maxfield; i++)
1629 if (report->field[i]->maxusage >= 1)
1630 mt_fix_const_field(report->field[i], usage);
1631 }
1632 }
1633
1634 static void mt_release_contacts(struct hid_device *hid)
1635 {
1636 struct hid_input *hidinput;
1637 struct mt_application *application;
1638 struct mt_device *td = hid_get_drvdata(hid);
1639
1640 list_for_each_entry(hidinput, &hid->inputs, list) {
1641 struct input_dev *input_dev = hidinput->input;
1642 struct input_mt *mt = input_dev->mt;
1643 int i;
1644
1645 if (mt) {
1646 for (i = 0; i < mt->num_slots; i++) {
1647 input_mt_slot(input_dev, i);
1648 input_mt_report_slot_inactive(input_dev);
1649 }
1650 input_mt_sync_frame(input_dev);
1651 input_sync(input_dev);
1652 }
1653 }
1654
1655 list_for_each_entry(application, &td->applications, list) {
1656 application->num_received = 0;
1657 }
1658 }
1659
1660 static void mt_expired_timeout(struct timer_list *t)
1661 {
1662 struct mt_device *td = from_timer(td, t, release_timer);
1663 struct hid_device *hdev = td->hdev;
1664
1665 /*
1666 * An input report came in just before we release the sticky fingers,
1667 * it will take care of the sticky fingers.
1668 */
1669 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1670 return;
1671 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1672 mt_release_contacts(hdev);
1673 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1674 }
1675
1676 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1677 {
1678 int ret, i;
1679 struct mt_device *td;
1680 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1681
1682 for (i = 0; mt_classes[i].name ; i++) {
1683 if (id->driver_data == mt_classes[i].name) {
1684 mtclass = &(mt_classes[i]);
1685 break;
1686 }
1687 }
1688
1689 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1690 if (!td) {
1691 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1692 return -ENOMEM;
1693 }
1694 td->hdev = hdev;
1695 td->mtclass = *mtclass;
1696 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1697 hid_set_drvdata(hdev, td);
1698
1699 INIT_LIST_HEAD(&td->applications);
1700 INIT_LIST_HEAD(&td->reports);
1701
1702 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1703 td->serial_maybe = true;
1704
1705 /* This allows the driver to correctly support devices
1706 * that emit events over several HID messages.
1707 */
1708 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1709
1710 /*
1711 * This allows the driver to handle different input sensors
1712 * that emits events through different applications on the same HID
1713 * device.
1714 */
1715 hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
1716
1717 if (id->group != HID_GROUP_MULTITOUCH_WIN_8)
1718 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1719
1720 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) {
1721 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP;
1722 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1723 }
1724
1725 timer_setup(&td->release_timer, mt_expired_timeout, 0);
1726
1727 ret = hid_parse(hdev);
1728 if (ret != 0)
1729 return ret;
1730
1731 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1732 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1733
1734 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1735 if (ret)
1736 return ret;
1737
1738 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1739 if (ret)
1740 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1741 hdev->name);
1742
1743 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
1744
1745 return 0;
1746 }
1747
1748 #ifdef CONFIG_PM
1749 static int mt_reset_resume(struct hid_device *hdev)
1750 {
1751 mt_release_contacts(hdev);
1752 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
1753 return 0;
1754 }
1755
1756 static int mt_resume(struct hid_device *hdev)
1757 {
1758 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1759 * It should be safe to send it to other devices too.
1760 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1761
1762 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1763
1764 return 0;
1765 }
1766 #endif
1767
1768 static void mt_remove(struct hid_device *hdev)
1769 {
1770 struct mt_device *td = hid_get_drvdata(hdev);
1771
1772 del_timer_sync(&td->release_timer);
1773
1774 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1775 hid_hw_stop(hdev);
1776 }
1777
1778 /*
1779 * This list contains only:
1780 * - VID/PID of products not working with the default multitouch handling
1781 * - 2 generic rules.
1782 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1783 */
1784 static const struct hid_device_id mt_devices[] = {
1785
1786 /* 3M panels */
1787 { .driver_data = MT_CLS_3M,
1788 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1789 USB_DEVICE_ID_3M1968) },
1790 { .driver_data = MT_CLS_3M,
1791 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1792 USB_DEVICE_ID_3M2256) },
1793 { .driver_data = MT_CLS_3M,
1794 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1795 USB_DEVICE_ID_3M3266) },
1796
1797 /* Anton devices */
1798 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1799 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1800 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1801
1802 /* Asus T304UA */
1803 { .driver_data = MT_CLS_ASUS,
1804 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1805 USB_VENDOR_ID_ASUSTEK,
1806 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
1807
1808 /* Atmel panels */
1809 { .driver_data = MT_CLS_SERIAL,
1810 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1811 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1812
1813 /* Baanto multitouch devices */
1814 { .driver_data = MT_CLS_NSMU,
1815 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1816 USB_DEVICE_ID_BAANTO_MT_190W2) },
1817
1818 /* Cando panels */
1819 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1820 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1821 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1822 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1823 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1824 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1825
1826 /* Chunghwa Telecom touch panels */
1827 { .driver_data = MT_CLS_NSMU,
1828 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1829 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1830
1831 /* CJTouch panels */
1832 { .driver_data = MT_CLS_NSMU,
1833 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1834 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1835 { .driver_data = MT_CLS_NSMU,
1836 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1837 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1838
1839 /* CVTouch panels */
1840 { .driver_data = MT_CLS_NSMU,
1841 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1842 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1843
1844 /* eGalax devices (resistive) */
1845 { .driver_data = MT_CLS_EGALAX,
1846 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1847 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1848 { .driver_data = MT_CLS_EGALAX,
1849 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1850 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1851
1852 /* eGalax devices (capacitive) */
1853 { .driver_data = MT_CLS_EGALAX_SERIAL,
1854 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1855 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1856 { .driver_data = MT_CLS_EGALAX,
1857 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1858 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1859 { .driver_data = MT_CLS_EGALAX_SERIAL,
1860 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1861 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1862 { .driver_data = MT_CLS_EGALAX_SERIAL,
1863 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1864 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1865 { .driver_data = MT_CLS_EGALAX_SERIAL,
1866 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1867 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1868 { .driver_data = MT_CLS_EGALAX_SERIAL,
1869 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1870 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1871 { .driver_data = MT_CLS_EGALAX,
1872 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1873 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1874 { .driver_data = MT_CLS_EGALAX,
1875 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1876 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1877 { .driver_data = MT_CLS_EGALAX_SERIAL,
1878 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1879 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1880 { .driver_data = MT_CLS_EGALAX,
1881 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1882 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1883 { .driver_data = MT_CLS_EGALAX,
1884 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1885 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1886 { .driver_data = MT_CLS_EGALAX,
1887 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1888 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1889 { .driver_data = MT_CLS_EGALAX,
1890 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1891 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1892 { .driver_data = MT_CLS_EGALAX_SERIAL,
1893 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1894 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1895 { .driver_data = MT_CLS_EGALAX_SERIAL,
1896 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1897 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1898 { .driver_data = MT_CLS_EGALAX_SERIAL,
1899 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1900 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1901 { .driver_data = MT_CLS_EGALAX,
1902 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1903 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) },
1904
1905 /* Elan devices */
1906 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
1907 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1908 USB_VENDOR_ID_ELAN, 0x313a) },
1909
1910 /* Elitegroup panel */
1911 { .driver_data = MT_CLS_SERIAL,
1912 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1913 USB_DEVICE_ID_ELITEGROUP_05D8) },
1914
1915 /* Flatfrog Panels */
1916 { .driver_data = MT_CLS_FLATFROG,
1917 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1918 USB_DEVICE_ID_MULTITOUCH_3200) },
1919
1920 /* FocalTech Panels */
1921 { .driver_data = MT_CLS_SERIAL,
1922 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1923 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1924
1925 /* GeneralTouch panel */
1926 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1927 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1928 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1929 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1930 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1931 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1932 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1933 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1934 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1935 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1936 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1937 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1938 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1939 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1940 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
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_010A) },
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_E100) },
1947
1948 /* Gametel game controller */
1949 { .driver_data = MT_CLS_NSMU,
1950 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1951 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1952
1953 /* GoodTouch panels */
1954 { .driver_data = MT_CLS_NSMU,
1955 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1956 USB_DEVICE_ID_GOODTOUCH_000f) },
1957
1958 /* Hanvon panels */
1959 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1960 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1961 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1962
1963 /* Ilitek dual touch panel */
1964 { .driver_data = MT_CLS_NSMU,
1965 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1966 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1967
1968 /* LG Melfas panel */
1969 { .driver_data = MT_CLS_LG,
1970 HID_USB_DEVICE(USB_VENDOR_ID_LG,
1971 USB_DEVICE_ID_LG_MELFAS_MT) },
1972 { .driver_data = MT_CLS_LG,
1973 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC,
1974 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) },
1975
1976 /* Lenovo X1 TAB Gen 2 */
1977 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
1978 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1979 USB_VENDOR_ID_LENOVO,
1980 USB_DEVICE_ID_LENOVO_X1_TAB) },
1981
1982 /* Lenovo X1 TAB Gen 3 */
1983 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
1984 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1985 USB_VENDOR_ID_LENOVO,
1986 USB_DEVICE_ID_LENOVO_X1_TAB3) },
1987
1988 /* MosArt panels */
1989 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1990 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1991 USB_DEVICE_ID_ASUS_T91MT)},
1992 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1993 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1994 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1995 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1996 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1997 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1998
1999 /* Novatek Panel */
2000 { .driver_data = MT_CLS_NSMU,
2001 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
2002 USB_DEVICE_ID_NOVATEK_PCT) },
2003
2004 /* Ntrig Panel */
2005 { .driver_data = MT_CLS_NSMU,
2006 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2007 USB_VENDOR_ID_NTRIG, 0x1b05) },
2008
2009 /* Panasonic panels */
2010 { .driver_data = MT_CLS_PANASONIC,
2011 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
2012 USB_DEVICE_ID_PANABOARD_UBT780) },
2013 { .driver_data = MT_CLS_PANASONIC,
2014 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
2015 USB_DEVICE_ID_PANABOARD_UBT880) },
2016
2017 /* PixArt optical touch screen */
2018 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2019 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2020 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
2021 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2022 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2023 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
2024 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2025 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2026 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
2027
2028 /* PixCir-based panels */
2029 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
2030 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
2031 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
2032
2033 /* Quanta-based panels */
2034 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
2035 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
2036 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
2037
2038 /* Razer touchpads */
2039 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH,
2040 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2041 USB_VENDOR_ID_SYNAPTICS, 0x8323) },
2042
2043 /* Smart Tech panels */
2044 { .driver_data = MT_CLS_SMART_TECH,
2045 MT_USB_DEVICE(0x0b8c, 0x0092)},
2046
2047 /* Stantum panels */
2048 { .driver_data = MT_CLS_CONFIDENCE,
2049 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
2050 USB_DEVICE_ID_MTP_STM)},
2051
2052 /* Synaptics devices */
2053 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2054 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2055 USB_VENDOR_ID_SYNAPTICS, 0xce08) },
2056
2057 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2058 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2059 USB_VENDOR_ID_SYNAPTICS, 0xce09) },
2060
2061 /* TopSeed panels */
2062 { .driver_data = MT_CLS_TOPSEED,
2063 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
2064 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
2065
2066 /* Touch International panels */
2067 { .driver_data = MT_CLS_NSMU,
2068 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
2069 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
2070
2071 /* Unitec panels */
2072 { .driver_data = MT_CLS_NSMU,
2073 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2074 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
2075 { .driver_data = MT_CLS_NSMU,
2076 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2077 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
2078
2079 /* VTL panels */
2080 { .driver_data = MT_CLS_VTL,
2081 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
2082 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
2083
2084 /* Wistron panels */
2085 { .driver_data = MT_CLS_NSMU,
2086 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
2087 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
2088
2089 /* XAT */
2090 { .driver_data = MT_CLS_NSMU,
2091 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
2092 USB_DEVICE_ID_XAT_CSR) },
2093
2094 /* Xiroku */
2095 { .driver_data = MT_CLS_NSMU,
2096 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2097 USB_DEVICE_ID_XIROKU_SPX) },
2098 { .driver_data = MT_CLS_NSMU,
2099 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2100 USB_DEVICE_ID_XIROKU_MPX) },
2101 { .driver_data = MT_CLS_NSMU,
2102 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2103 USB_DEVICE_ID_XIROKU_CSR) },
2104 { .driver_data = MT_CLS_NSMU,
2105 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2106 USB_DEVICE_ID_XIROKU_SPX1) },
2107 { .driver_data = MT_CLS_NSMU,
2108 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2109 USB_DEVICE_ID_XIROKU_MPX1) },
2110 { .driver_data = MT_CLS_NSMU,
2111 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2112 USB_DEVICE_ID_XIROKU_CSR1) },
2113 { .driver_data = MT_CLS_NSMU,
2114 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2115 USB_DEVICE_ID_XIROKU_SPX2) },
2116 { .driver_data = MT_CLS_NSMU,
2117 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2118 USB_DEVICE_ID_XIROKU_MPX2) },
2119 { .driver_data = MT_CLS_NSMU,
2120 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2121 USB_DEVICE_ID_XIROKU_CSR2) },
2122
2123 /* Google MT devices */
2124 { .driver_data = MT_CLS_GOOGLE,
2125 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
2126 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
2127
2128 /* Generic MT device */
2129 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
2130
2131 /* Generic Win 8 certified MT device */
2132 { .driver_data = MT_CLS_WIN_8,
2133 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
2134 HID_ANY_ID, HID_ANY_ID) },
2135 { }
2136 };
2137 MODULE_DEVICE_TABLE(hid, mt_devices);
2138
2139 static const struct hid_usage_id mt_grabbed_usages[] = {
2140 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
2141 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
2142 };
2143
2144 static struct hid_driver mt_driver = {
2145 .name = "hid-multitouch",
2146 .id_table = mt_devices,
2147 .probe = mt_probe,
2148 .remove = mt_remove,
2149 .input_mapping = mt_input_mapping,
2150 .input_mapped = mt_input_mapped,
2151 .input_configured = mt_input_configured,
2152 .feature_mapping = mt_feature_mapping,
2153 .usage_table = mt_grabbed_usages,
2154 .event = mt_event,
2155 .report = mt_report,
2156 #ifdef CONFIG_PM
2157 .reset_resume = mt_reset_resume,
2158 .resume = mt_resume,
2159 #endif
2160 };
2161 module_hid_driver(mt_driver);
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