?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
spi: sprd: adi: Add a reset reason for watchdog mode
[linux/fpc-iii.git] / drivers / hid / hid-multitouch.c
blobb603c14d043b89c146fc55ff71da16147b157c80
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
72 #define MT_INPUTMODE_TOUCHSCREEN 0x02
73 #define MT_INPUTMODE_TOUCHPAD 0x03
74
75 #define MT_BUTTONTYPE_CLICKPAD 0
76
77 enum latency_mode {
78 HID_LATENCY_NORMAL = 0,
79 HID_LATENCY_HIGH = 1,
80 };
81
82 #define MT_IO_FLAGS_RUNNING 0
83 #define MT_IO_FLAGS_ACTIVE_SLOTS 1
84 #define MT_IO_FLAGS_PENDING_SLOTS 2
85
86 static const bool mtrue = true; /* default for true */
87 static const bool mfalse; /* default for false */
88 static const __s32 mzero; /* default for 0 */
89
90 #define DEFAULT_TRUE ((void *)&mtrue)
91 #define DEFAULT_FALSE ((void *)&mfalse)
92 #define DEFAULT_ZERO ((void *)&mzero)
93
94 struct mt_usages {
95 struct list_head list;
96 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a;
97 __s32 *contactid; /* the device ContactID assigned to this slot */
98 bool *tip_state; /* is the touch valid? */
99 bool *inrange_state; /* is the finger in proximity of the sensor? */
100 bool *confidence_state; /* is the touch made by a finger? */
101 };
102
103 struct mt_application {
104 struct list_head list;
105 unsigned int application;
106 struct list_head mt_usages; /* mt usages list */
107
108 __s32 quirks;
109
110 __s32 *scantime; /* scantime reported */
111 __s32 scantime_logical_max; /* max value for raw scantime */
112
113 __s32 *raw_cc; /* contact count in the report */
114 int left_button_state; /* left button state */
115 unsigned int mt_flags; /* flags to pass to input-mt */
116
117 unsigned long *pending_palm_slots; /* slots where we reported palm
118 * and need to release */
119
120 __u8 num_received; /* how many contacts we received */
121 __u8 num_expected; /* expected last contact index */
122 __u8 buttons_count; /* number of physical buttons per touchpad */
123 __u8 touches_by_report; /* how many touches are present in one report:
124 * 1 means we should use a serial protocol
125 * > 1 means hybrid (multitouch) protocol
126 */
127
128 __s32 dev_time; /* the scan time provided by the device */
129 unsigned long jiffies; /* the frame's jiffies */
130 int timestamp; /* the timestamp to be sent */
131 int prev_scantime; /* scantime reported previously */
132
133 bool have_contact_count;
134 };
135
136 struct mt_class {
137 __s32 name; /* MT_CLS */
138 __s32 quirks;
139 __s32 sn_move; /* Signal/noise ratio for move events */
140 __s32 sn_width; /* Signal/noise ratio for width events */
141 __s32 sn_height; /* Signal/noise ratio for height events */
142 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
143 __u8 maxcontacts;
144 bool is_indirect; /* true for touchpads */
145 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
146 };
147
148 struct mt_report_data {
149 struct list_head list;
150 struct hid_report *report;
151 struct mt_application *application;
152 bool is_mt_collection;
153 };
154
155 struct mt_device {
156 struct mt_class mtclass; /* our mt device class */
157 struct timer_list release_timer; /* to release sticky fingers */
158 struct hid_device *hdev; /* hid_device we're attached to */
159 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */
160 __u8 inputmode_value; /* InputMode HID feature value */
161 __u8 maxcontacts;
162 bool is_buttonpad; /* is this device a button pad? */
163 bool serial_maybe; /* need to check for serial protocol */
164
165 struct list_head applications;
166 struct list_head reports;
167 };
168
169 static void mt_post_parse_default_settings(struct mt_device *td,
170 struct mt_application *app);
171 static void mt_post_parse(struct mt_device *td, struct mt_application *app);
172
173 /* classes of device behavior */
174 #define MT_CLS_DEFAULT 0x0001
175
176 #define MT_CLS_SERIAL 0x0002
177 #define MT_CLS_CONFIDENCE 0x0003
178 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
179 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
180 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
181 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
182 /* reserved 0x0008 */
183 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
184 #define MT_CLS_NSMU 0x000a
185 /* reserved 0x0010 */
186 /* reserved 0x0011 */
187 #define MT_CLS_WIN_8 0x0012
188 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
189 #define MT_CLS_WIN_8_DUAL 0x0014
190
191 /* vendor specific classes */
192 #define MT_CLS_3M 0x0101
193 /* reserved 0x0102 */
194 #define MT_CLS_EGALAX 0x0103
195 #define MT_CLS_EGALAX_SERIAL 0x0104
196 #define MT_CLS_TOPSEED 0x0105
197 #define MT_CLS_PANASONIC 0x0106
198 #define MT_CLS_FLATFROG 0x0107
199 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
200 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
201 #define MT_CLS_LG 0x010a
202 #define MT_CLS_ASUS 0x010b
203 #define MT_CLS_VTL 0x0110
204 #define MT_CLS_GOOGLE 0x0111
205 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112
206
207 #define MT_DEFAULT_MAXCONTACT 10
208 #define MT_MAX_MAXCONTACT 250
209
210 /*
211 * Resync device and local timestamps after that many microseconds without
212 * receiving data.
213 */
214 #define MAX_TIMESTAMP_INTERVAL 1000000
215
216 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
217 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
218
219 /*
220 * these device-dependent functions determine what slot corresponds
221 * to a valid contact that was just read.
222 */
223
224 static int cypress_compute_slot(struct mt_application *application,
225 struct mt_usages *slot)
226 {
227 if (*slot->contactid != 0 || application->num_received == 0)
228 return *slot->contactid;
229 else
230 return -1;
231 }
232
233 static const struct mt_class mt_classes[] = {
234 { .name = MT_CLS_DEFAULT,
235 .quirks = MT_QUIRK_ALWAYS_VALID |
236 MT_QUIRK_CONTACT_CNT_ACCURATE },
237 { .name = MT_CLS_NSMU,
238 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
239 { .name = MT_CLS_SERIAL,
240 .quirks = MT_QUIRK_ALWAYS_VALID},
241 { .name = MT_CLS_CONFIDENCE,
242 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
243 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
244 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
245 MT_QUIRK_SLOT_IS_CONTACTID },
246 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
247 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
248 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
249 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
250 .quirks = MT_QUIRK_VALID_IS_INRANGE |
251 MT_QUIRK_SLOT_IS_CONTACTID,
252 .maxcontacts = 2 },
253 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
254 .quirks = MT_QUIRK_VALID_IS_INRANGE |
255 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
256 .maxcontacts = 2 },
257 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
258 .quirks = MT_QUIRK_VALID_IS_INRANGE |
259 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
260 { .name = MT_CLS_WIN_8,
261 .quirks = MT_QUIRK_ALWAYS_VALID |
262 MT_QUIRK_IGNORE_DUPLICATES |
263 MT_QUIRK_HOVERING |
264 MT_QUIRK_CONTACT_CNT_ACCURATE |
265 MT_QUIRK_STICKY_FINGERS |
266 MT_QUIRK_WIN8_PTP_BUTTONS },
267 { .name = MT_CLS_EXPORT_ALL_INPUTS,
268 .quirks = MT_QUIRK_ALWAYS_VALID |
269 MT_QUIRK_CONTACT_CNT_ACCURATE,
270 .export_all_inputs = true },
271 { .name = MT_CLS_WIN_8_DUAL,
272 .quirks = MT_QUIRK_ALWAYS_VALID |
273 MT_QUIRK_IGNORE_DUPLICATES |
274 MT_QUIRK_HOVERING |
275 MT_QUIRK_CONTACT_CNT_ACCURATE |
276 MT_QUIRK_WIN8_PTP_BUTTONS,
277 .export_all_inputs = true },
278
279 /*
280 * vendor specific classes
281 */
282 { .name = MT_CLS_3M,
283 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
284 MT_QUIRK_SLOT_IS_CONTACTID |
285 MT_QUIRK_TOUCH_SIZE_SCALING,
286 .sn_move = 2048,
287 .sn_width = 128,
288 .sn_height = 128,
289 .maxcontacts = 60,
290 },
291 { .name = MT_CLS_EGALAX,
292 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
293 MT_QUIRK_VALID_IS_INRANGE,
294 .sn_move = 4096,
295 .sn_pressure = 32,
296 },
297 { .name = MT_CLS_EGALAX_SERIAL,
298 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
299 MT_QUIRK_ALWAYS_VALID,
300 .sn_move = 4096,
301 .sn_pressure = 32,
302 },
303 { .name = MT_CLS_TOPSEED,
304 .quirks = MT_QUIRK_ALWAYS_VALID,
305 .is_indirect = true,
306 .maxcontacts = 2,
307 },
308 { .name = MT_CLS_PANASONIC,
309 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
310 .maxcontacts = 4 },
311 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
312 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
313 MT_QUIRK_VALID_IS_INRANGE |
314 MT_QUIRK_SLOT_IS_CONTACTID,
315 .maxcontacts = 2
316 },
317 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
318 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
319 MT_QUIRK_SLOT_IS_CONTACTID
320 },
321
322 { .name = MT_CLS_FLATFROG,
323 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
324 MT_QUIRK_NO_AREA,
325 .sn_move = 2048,
326 .maxcontacts = 40,
327 },
328 { .name = MT_CLS_LG,
329 .quirks = MT_QUIRK_ALWAYS_VALID |
330 MT_QUIRK_FIX_CONST_CONTACT_ID |
331 MT_QUIRK_IGNORE_DUPLICATES |
332 MT_QUIRK_HOVERING |
333 MT_QUIRK_CONTACT_CNT_ACCURATE },
334 { .name = MT_CLS_ASUS,
335 .quirks = MT_QUIRK_ALWAYS_VALID |
336 MT_QUIRK_CONTACT_CNT_ACCURATE |
337 MT_QUIRK_ASUS_CUSTOM_UP },
338 { .name = MT_CLS_VTL,
339 .quirks = MT_QUIRK_ALWAYS_VALID |
340 MT_QUIRK_CONTACT_CNT_ACCURATE |
341 MT_QUIRK_FORCE_GET_FEATURE,
342 },
343 { .name = MT_CLS_GOOGLE,
344 .quirks = MT_QUIRK_ALWAYS_VALID |
345 MT_QUIRK_CONTACT_CNT_ACCURATE |
346 MT_QUIRK_SLOT_IS_CONTACTID |
347 MT_QUIRK_HOVERING
348 },
349 { .name = MT_CLS_RAZER_BLADE_STEALTH,
350 .quirks = MT_QUIRK_ALWAYS_VALID |
351 MT_QUIRK_IGNORE_DUPLICATES |
352 MT_QUIRK_HOVERING |
353 MT_QUIRK_CONTACT_CNT_ACCURATE |
354 MT_QUIRK_WIN8_PTP_BUTTONS,
355 },
356 { }
357 };
358
359 static ssize_t mt_show_quirks(struct device *dev,
360 struct device_attribute *attr,
361 char *buf)
362 {
363 struct hid_device *hdev = to_hid_device(dev);
364 struct mt_device *td = hid_get_drvdata(hdev);
365
366 return sprintf(buf, "%u\n", td->mtclass.quirks);
367 }
368
369 static ssize_t mt_set_quirks(struct device *dev,
370 struct device_attribute *attr,
371 const char *buf, size_t count)
372 {
373 struct hid_device *hdev = to_hid_device(dev);
374 struct mt_device *td = hid_get_drvdata(hdev);
375 struct mt_application *application;
376
377 unsigned long val;
378
379 if (kstrtoul(buf, 0, &val))
380 return -EINVAL;
381
382 td->mtclass.quirks = val;
383
384 list_for_each_entry(application, &td->applications, list) {
385 application->quirks = val;
386 if (!application->have_contact_count)
387 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
388 }
389
390 return count;
391 }
392
393 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
394
395 static struct attribute *sysfs_attrs[] = {
396 &dev_attr_quirks.attr,
397 NULL
398 };
399
400 static const struct attribute_group mt_attribute_group = {
401 .attrs = sysfs_attrs
402 };
403
404 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
405 {
406 int ret;
407 u32 size = hid_report_len(report);
408 u8 *buf;
409
410 /*
411 * Do not fetch the feature report if the device has been explicitly
412 * marked as non-capable.
413 */
414 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS)
415 return;
416
417 buf = hid_alloc_report_buf(report, GFP_KERNEL);
418 if (!buf)
419 return;
420
421 ret = hid_hw_raw_request(hdev, report->id, buf, size,
422 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
423 if (ret < 0) {
424 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
425 report->id);
426 } else {
427 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
428 size, 0);
429 if (ret)
430 dev_warn(&hdev->dev, "failed to report feature\n");
431 }
432
433 kfree(buf);
434 }
435
436 static void mt_feature_mapping(struct hid_device *hdev,
437 struct hid_field *field, struct hid_usage *usage)
438 {
439 struct mt_device *td = hid_get_drvdata(hdev);
440
441 switch (usage->hid) {
442 case HID_DG_CONTACTMAX:
443 mt_get_feature(hdev, field->report);
444
445 td->maxcontacts = field->value[0];
446 if (!td->maxcontacts &&
447 field->logical_maximum <= MT_MAX_MAXCONTACT)
448 td->maxcontacts = field->logical_maximum;
449 if (td->mtclass.maxcontacts)
450 /* check if the maxcontacts is given by the class */
451 td->maxcontacts = td->mtclass.maxcontacts;
452
453 break;
454 case HID_DG_BUTTONTYPE:
455 if (usage->usage_index >= field->report_count) {
456 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
457 break;
458 }
459
460 mt_get_feature(hdev, field->report);
461 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
462 td->is_buttonpad = true;
463
464 break;
465 case 0xff0000c5:
466 /* Retrieve the Win8 blob once to enable some devices */
467 if (usage->usage_index == 0)
468 mt_get_feature(hdev, field->report);
469 break;
470 }
471 }
472
473 static void set_abs(struct input_dev *input, unsigned int code,
474 struct hid_field *field, int snratio)
475 {
476 int fmin = field->logical_minimum;
477 int fmax = field->logical_maximum;
478 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
479 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
480 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
481 }
482
483 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev,
484 struct mt_application *application)
485 {
486 struct mt_usages *usage;
487
488 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL);
489 if (!usage)
490 return NULL;
491
492 /* set some defaults so we do not need to check for null pointers */
493 usage->x = DEFAULT_ZERO;
494 usage->y = DEFAULT_ZERO;
495 usage->cx = DEFAULT_ZERO;
496 usage->cy = DEFAULT_ZERO;
497 usage->p = DEFAULT_ZERO;
498 usage->w = DEFAULT_ZERO;
499 usage->h = DEFAULT_ZERO;
500 usage->a = DEFAULT_ZERO;
501 usage->contactid = DEFAULT_ZERO;
502 usage->tip_state = DEFAULT_FALSE;
503 usage->inrange_state = DEFAULT_FALSE;
504 usage->confidence_state = DEFAULT_TRUE;
505
506 list_add_tail(&usage->list, &application->mt_usages);
507
508 return usage;
509 }
510
511 static struct mt_application *mt_allocate_application(struct mt_device *td,
512 unsigned int application)
513 {
514 struct mt_application *mt_application;
515
516 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application),
517 GFP_KERNEL);
518 if (!mt_application)
519 return NULL;
520
521 mt_application->application = application;
522 INIT_LIST_HEAD(&mt_application->mt_usages);
523
524 if (application == HID_DG_TOUCHSCREEN)
525 mt_application->mt_flags |= INPUT_MT_DIRECT;
526
527 /*
528 * Model touchscreens providing buttons as touchpads.
529 */
530 if (application == HID_DG_TOUCHPAD) {
531 mt_application->mt_flags |= INPUT_MT_POINTER;
532 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
533 }
534
535 mt_application->scantime = DEFAULT_ZERO;
536 mt_application->raw_cc = DEFAULT_ZERO;
537 mt_application->quirks = td->mtclass.quirks;
538
539 list_add_tail(&mt_application->list, &td->applications);
540
541 return mt_application;
542 }
543
544 static struct mt_application *mt_find_application(struct mt_device *td,
545 unsigned int application)
546 {
547 struct mt_application *tmp, *mt_application = NULL;
548
549 list_for_each_entry(tmp, &td->applications, list) {
550 if (application == tmp->application) {
551 mt_application = tmp;
552 break;
553 }
554 }
555
556 if (!mt_application)
557 mt_application = mt_allocate_application(td, application);
558
559 return mt_application;
560 }
561
562 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td,
563 struct hid_report *report)
564 {
565 struct mt_report_data *rdata;
566 struct hid_field *field;
567 int r, n;
568
569 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL);
570 if (!rdata)
571 return NULL;
572
573 rdata->report = report;
574 rdata->application = mt_find_application(td, report->application);
575
576 if (!rdata->application) {
577 devm_kfree(&td->hdev->dev, rdata);
578 return NULL;
579 }
580
581 for (r = 0; r < report->maxfield; r++) {
582 field = report->field[r];
583
584 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
585 continue;
586
587 for (n = 0; n < field->report_count; n++) {
588 if (field->usage[n].hid == HID_DG_CONTACTID)
589 rdata->is_mt_collection = true;
590 }
591 }
592
593 list_add_tail(&rdata->list, &td->reports);
594
595 return rdata;
596 }
597
598 static struct mt_report_data *mt_find_report_data(struct mt_device *td,
599 struct hid_report *report)
600 {
601 struct mt_report_data *tmp, *rdata = NULL;
602
603 list_for_each_entry(tmp, &td->reports, list) {
604 if (report == tmp->report) {
605 rdata = tmp;
606 break;
607 }
608 }
609
610 if (!rdata)
611 rdata = mt_allocate_report_data(td, report);
612
613 return rdata;
614 }
615
616 static void mt_store_field(struct hid_device *hdev,
617 struct mt_application *application,
618 __s32 *value,
619 size_t offset)
620 {
621 struct mt_usages *usage;
622 __s32 **target;
623
624 if (list_empty(&application->mt_usages))
625 usage = mt_allocate_usage(hdev, application);
626 else
627 usage = list_last_entry(&application->mt_usages,
628 struct mt_usages,
629 list);
630
631 if (!usage)
632 return;
633
634 target = (__s32 **)((char *)usage + offset);
635
636 /* the value has already been filled, create a new slot */
637 if (*target != DEFAULT_TRUE &&
638 *target != DEFAULT_FALSE &&
639 *target != DEFAULT_ZERO) {
640 if (usage->contactid == DEFAULT_ZERO ||
641 usage->x == DEFAULT_ZERO ||
642 usage->y == DEFAULT_ZERO) {
643 hid_dbg(hdev,
644 "ignoring duplicate usage on incomplete");
645 return;
646 }
647 usage = mt_allocate_usage(hdev, application);
648 if (!usage)
649 return;
650
651 target = (__s32 **)((char *)usage + offset);
652 }
653
654 *target = value;
655 }
656
657 #define MT_STORE_FIELD(__name) \
658 mt_store_field(hdev, app, \
659 &field->value[usage->usage_index], \
660 offsetof(struct mt_usages, __name))
661
662 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
663 struct hid_field *field, struct hid_usage *usage,
664 unsigned long **bit, int *max, struct mt_application *app)
665 {
666 struct mt_device *td = hid_get_drvdata(hdev);
667 struct mt_class *cls = &td->mtclass;
668 int code;
669 struct hid_usage *prev_usage = NULL;
670
671 /*
672 * Model touchscreens providing buttons as touchpads.
673 */
674 if (field->application == HID_DG_TOUCHSCREEN &&
675 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
676 app->mt_flags |= INPUT_MT_POINTER;
677 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
678 }
679
680 /* count the buttons on touchpads */
681 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
682 app->buttons_count++;
683
684 if (usage->usage_index)
685 prev_usage = &field->usage[usage->usage_index - 1];
686
687 switch (usage->hid & HID_USAGE_PAGE) {
688
689 case HID_UP_GENDESK:
690 switch (usage->hid) {
691 case HID_GD_X:
692 if (prev_usage && (prev_usage->hid == usage->hid)) {
693 code = ABS_MT_TOOL_X;
694 MT_STORE_FIELD(cx);
695 } else {
696 code = ABS_MT_POSITION_X;
697 MT_STORE_FIELD(x);
698 }
699
700 set_abs(hi->input, code, field, cls->sn_move);
701
702 /*
703 * A system multi-axis that exports X and Y has a high
704 * chance of being used directly on a surface
705 */
706 if (field->application == HID_GD_SYSTEM_MULTIAXIS) {
707 __set_bit(INPUT_PROP_DIRECT,
708 hi->input->propbit);
709 input_set_abs_params(hi->input,
710 ABS_MT_TOOL_TYPE,
711 MT_TOOL_DIAL,
712 MT_TOOL_DIAL, 0, 0);
713 }
714
715 return 1;
716 case HID_GD_Y:
717 if (prev_usage && (prev_usage->hid == usage->hid)) {
718 code = ABS_MT_TOOL_Y;
719 MT_STORE_FIELD(cy);
720 } else {
721 code = ABS_MT_POSITION_Y;
722 MT_STORE_FIELD(y);
723 }
724
725 set_abs(hi->input, code, field, cls->sn_move);
726
727 return 1;
728 }
729 return 0;
730
731 case HID_UP_DIGITIZER:
732 switch (usage->hid) {
733 case HID_DG_INRANGE:
734 if (app->quirks & MT_QUIRK_HOVERING) {
735 input_set_abs_params(hi->input,
736 ABS_MT_DISTANCE, 0, 1, 0, 0);
737 }
738 MT_STORE_FIELD(inrange_state);
739 return 1;
740 case HID_DG_CONFIDENCE:
741 if ((cls->name == MT_CLS_WIN_8 ||
742 cls->name == MT_CLS_WIN_8_DUAL) &&
743 (field->application == HID_DG_TOUCHPAD ||
744 field->application == HID_DG_TOUCHSCREEN))
745 app->quirks |= MT_QUIRK_CONFIDENCE;
746
747 if (app->quirks & MT_QUIRK_CONFIDENCE)
748 input_set_abs_params(hi->input,
749 ABS_MT_TOOL_TYPE,
750 MT_TOOL_FINGER,
751 MT_TOOL_PALM, 0, 0);
752
753 MT_STORE_FIELD(confidence_state);
754 return 1;
755 case HID_DG_TIPSWITCH:
756 if (field->application != HID_GD_SYSTEM_MULTIAXIS)
757 input_set_capability(hi->input,
758 EV_KEY, BTN_TOUCH);
759 MT_STORE_FIELD(tip_state);
760 return 1;
761 case HID_DG_CONTACTID:
762 MT_STORE_FIELD(contactid);
763 app->touches_by_report++;
764 return 1;
765 case HID_DG_WIDTH:
766 if (!(app->quirks & MT_QUIRK_NO_AREA))
767 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
768 cls->sn_width);
769 MT_STORE_FIELD(w);
770 return 1;
771 case HID_DG_HEIGHT:
772 if (!(app->quirks & MT_QUIRK_NO_AREA)) {
773 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
774 cls->sn_height);
775
776 /*
777 * Only set ABS_MT_ORIENTATION if it is not
778 * already set by the HID_DG_AZIMUTH usage.
779 */
780 if (!test_bit(ABS_MT_ORIENTATION,
781 hi->input->absbit))
782 input_set_abs_params(hi->input,
783 ABS_MT_ORIENTATION, 0, 1, 0, 0);
784 }
785 MT_STORE_FIELD(h);
786 return 1;
787 case HID_DG_TIPPRESSURE:
788 set_abs(hi->input, ABS_MT_PRESSURE, field,
789 cls->sn_pressure);
790 MT_STORE_FIELD(p);
791 return 1;
792 case HID_DG_SCANTIME:
793 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
794 app->scantime = &field->value[usage->usage_index];
795 app->scantime_logical_max = field->logical_maximum;
796 return 1;
797 case HID_DG_CONTACTCOUNT:
798 app->have_contact_count = true;
799 app->raw_cc = &field->value[usage->usage_index];
800 return 1;
801 case HID_DG_AZIMUTH:
802 /*
803 * Azimuth has the range of [0, MAX) representing a full
804 * revolution. Set ABS_MT_ORIENTATION to a quarter of
805 * MAX according the definition of ABS_MT_ORIENTATION
806 */
807 input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
808 -field->logical_maximum / 4,
809 field->logical_maximum / 4,
810 cls->sn_move ?
811 field->logical_maximum / cls->sn_move : 0, 0);
812 MT_STORE_FIELD(a);
813 return 1;
814 case HID_DG_CONTACTMAX:
815 /* contact max are global to the report */
816 return -1;
817 case HID_DG_TOUCH:
818 /* Legacy devices use TIPSWITCH and not TOUCH.
819 * Let's just ignore this field. */
820 return -1;
821 }
822 /* let hid-input decide for the others */
823 return 0;
824
825 case HID_UP_BUTTON:
826 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
827 /*
828 * MS PTP spec says that external buttons left and right have
829 * usages 2 and 3.
830 */
831 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
832 field->application == HID_DG_TOUCHPAD &&
833 (usage->hid & HID_USAGE) > 1)
834 code--;
835
836 if (field->application == HID_GD_SYSTEM_MULTIAXIS)
837 code = BTN_0 + ((usage->hid - 1) & HID_USAGE);
838
839 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
840 input_set_capability(hi->input, EV_KEY, code);
841 return 1;
842
843 case 0xff000000:
844 /* we do not want to map these: no input-oriented meaning */
845 return -1;
846 }
847
848 return 0;
849 }
850
851 static int mt_compute_slot(struct mt_device *td, struct mt_application *app,
852 struct mt_usages *slot,
853 struct input_dev *input)
854 {
855 __s32 quirks = app->quirks;
856
857 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
858 return *slot->contactid;
859
860 if (quirks & MT_QUIRK_CYPRESS)
861 return cypress_compute_slot(app, slot);
862
863 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
864 return app->num_received;
865
866 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
867 return *slot->contactid - 1;
868
869 return input_mt_get_slot_by_key(input, *slot->contactid);
870 }
871
872 static void mt_release_pending_palms(struct mt_device *td,
873 struct mt_application *app,
874 struct input_dev *input)
875 {
876 int slotnum;
877 bool need_sync = false;
878
879 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) {
880 clear_bit(slotnum, app->pending_palm_slots);
881
882 input_mt_slot(input, slotnum);
883 input_mt_report_slot_state(input, MT_TOOL_PALM, false);
884
885 need_sync = true;
886 }
887
888 if (need_sync) {
889 input_mt_sync_frame(input);
890 input_sync(input);
891 }
892 }
893
894 /*
895 * this function is called when a whole packet has been received and processed,
896 * so that it can decide what to send to the input layer.
897 */
898 static void mt_sync_frame(struct mt_device *td, struct mt_application *app,
899 struct input_dev *input)
900 {
901 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS)
902 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state);
903
904 input_mt_sync_frame(input);
905 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp);
906 input_sync(input);
907
908 mt_release_pending_palms(td, app, input);
909
910 app->num_received = 0;
911 app->left_button_state = 0;
912
913 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
914 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
915 else
916 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
917 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
918 }
919
920 static int mt_compute_timestamp(struct mt_application *app, __s32 value)
921 {
922 long delta = value - app->prev_scantime;
923 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies);
924
925 app->jiffies = jiffies;
926
927 if (delta < 0)
928 delta += app->scantime_logical_max;
929
930 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
931 delta *= 100;
932
933 if (jdelta > MAX_TIMESTAMP_INTERVAL)
934 /* No data received for a while, resync the timestamp. */
935 return 0;
936 else
937 return app->timestamp + delta;
938 }
939
940 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
941 struct hid_usage *usage, __s32 value)
942 {
943 /* we will handle the hidinput part later, now remains hiddev */
944 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
945 hid->hiddev_hid_event(hid, field, usage, value);
946
947 return 1;
948 }
949
950 static int mt_process_slot(struct mt_device *td, struct input_dev *input,
951 struct mt_application *app,
952 struct mt_usages *slot)
953 {
954 struct input_mt *mt = input->mt;
955 __s32 quirks = app->quirks;
956 bool valid = true;
957 bool confidence_state = true;
958 bool inrange_state = false;
959 int active;
960 int slotnum;
961 int tool = MT_TOOL_FINGER;
962
963 if (!slot)
964 return -EINVAL;
965
966 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
967 app->num_received >= app->num_expected)
968 return -EAGAIN;
969
970 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) {
971 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
972 valid = *slot->inrange_state;
973 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
974 valid = *slot->tip_state;
975 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
976 valid = *slot->confidence_state;
977
978 if (!valid)
979 return 0;
980 }
981
982 slotnum = mt_compute_slot(td, app, slot, input);
983 if (slotnum < 0 || slotnum >= td->maxcontacts)
984 return 0;
985
986 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
987 struct input_mt_slot *i_slot = &mt->slots[slotnum];
988
989 if (input_mt_is_active(i_slot) &&
990 input_mt_is_used(mt, i_slot))
991 return -EAGAIN;
992 }
993
994 if (quirks & MT_QUIRK_CONFIDENCE)
995 confidence_state = *slot->confidence_state;
996
997 if (quirks & MT_QUIRK_HOVERING)
998 inrange_state = *slot->inrange_state;
999
1000 active = *slot->tip_state || inrange_state;
1001
1002 if (app->application == HID_GD_SYSTEM_MULTIAXIS)
1003 tool = MT_TOOL_DIAL;
1004 else if (unlikely(!confidence_state)) {
1005 tool = MT_TOOL_PALM;
1006 if (!active &&
1007 input_mt_is_active(&mt->slots[slotnum])) {
1008 /*
1009 * The non-confidence was reported for
1010 * previously valid contact that is also no
1011 * longer valid. We can't simply report
1012 * lift-off as userspace will not be aware
1013 * of non-confidence, so we need to split
1014 * it into 2 events: active MT_TOOL_PALM
1015 * and a separate liftoff.
1016 */
1017 active = true;
1018 set_bit(slotnum, app->pending_palm_slots);
1019 }
1020 }
1021
1022 input_mt_slot(input, slotnum);
1023 input_mt_report_slot_state(input, tool, active);
1024 if (active) {
1025 /* this finger is in proximity of the sensor */
1026 int wide = (*slot->w > *slot->h);
1027 int major = max(*slot->w, *slot->h);
1028 int minor = min(*slot->w, *slot->h);
1029 int orientation = wide;
1030 int max_azimuth;
1031 int azimuth;
1032
1033 if (slot->a != DEFAULT_ZERO) {
1034 /*
1035 * Azimuth is counter-clockwise and ranges from [0, MAX)
1036 * (a full revolution). Convert it to clockwise ranging
1037 * [-MAX/2, MAX/2].
1038 *
1039 * Note that ABS_MT_ORIENTATION require us to report
1040 * the limit of [-MAX/4, MAX/4], but the value can go
1041 * out of range to [-MAX/2, MAX/2] to report an upside
1042 * down ellipsis.
1043 */
1044 azimuth = *slot->a;
1045 max_azimuth = input_abs_get_max(input,
1046 ABS_MT_ORIENTATION);
1047 if (azimuth > max_azimuth * 2)
1048 azimuth -= max_azimuth * 4;
1049 orientation = -azimuth;
1050 }
1051
1052 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
1053 /*
1054 * divided by two to match visual scale of touch
1055 * for devices with this quirk
1056 */
1057 major = major >> 1;
1058 minor = minor >> 1;
1059 }
1060
1061 input_event(input, EV_ABS, ABS_MT_POSITION_X, *slot->x);
1062 input_event(input, EV_ABS, ABS_MT_POSITION_Y, *slot->y);
1063 input_event(input, EV_ABS, ABS_MT_TOOL_X, *slot->cx);
1064 input_event(input, EV_ABS, ABS_MT_TOOL_Y, *slot->cy);
1065 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state);
1066 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation);
1067 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p);
1068 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
1069 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
1070
1071 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
1072 }
1073
1074 return 0;
1075 }
1076
1077 static void mt_process_mt_event(struct hid_device *hid,
1078 struct mt_application *app,
1079 struct hid_field *field,
1080 struct hid_usage *usage,
1081 __s32 value,
1082 bool first_packet)
1083 {
1084 __s32 quirks = app->quirks;
1085 struct input_dev *input = field->hidinput->input;
1086
1087 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT))
1088 return;
1089
1090 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) {
1091
1092 /*
1093 * For Win8 PTP touchpads we should only look at
1094 * non finger/touch events in the first_packet of a
1095 * (possible) multi-packet frame.
1096 */
1097 if (!first_packet)
1098 return;
1099
1100 /*
1101 * For Win8 PTP touchpads we map both the clickpad click
1102 * and any "external" left buttons to BTN_LEFT if a
1103 * device claims to have both we need to report 1 for
1104 * BTN_LEFT if either is pressed, so we or all values
1105 * together and report the result in mt_sync_frame().
1106 */
1107 if (usage->type == EV_KEY && usage->code == BTN_LEFT) {
1108 app->left_button_state |= value;
1109 return;
1110 }
1111 }
1112
1113 input_event(input, usage->type, usage->code, value);
1114 }
1115
1116 static void mt_touch_report(struct hid_device *hid,
1117 struct mt_report_data *rdata)
1118 {
1119 struct mt_device *td = hid_get_drvdata(hid);
1120 struct hid_report *report = rdata->report;
1121 struct mt_application *app = rdata->application;
1122 struct hid_field *field;
1123 struct input_dev *input;
1124 struct mt_usages *slot;
1125 bool first_packet;
1126 unsigned count;
1127 int r, n;
1128 int scantime = 0;
1129 int contact_count = -1;
1130
1131 /* sticky fingers release in progress, abort */
1132 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1133 return;
1134
1135 scantime = *app->scantime;
1136 app->timestamp = mt_compute_timestamp(app, scantime);
1137 if (app->raw_cc != DEFAULT_ZERO)
1138 contact_count = *app->raw_cc;
1139
1140 /*
1141 * Includes multi-packet support where subsequent
1142 * packets are sent with zero contactcount.
1143 */
1144 if (contact_count >= 0) {
1145 /*
1146 * For Win8 PTPs the first packet (td->num_received == 0) may
1147 * have a contactcount of 0 if there only is a button event.
1148 * We double check that this is not a continuation packet
1149 * of a possible multi-packet frame be checking that the
1150 * timestamp has changed.
1151 */
1152 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
1153 app->num_received == 0 &&
1154 app->prev_scantime != scantime)
1155 app->num_expected = contact_count;
1156 /* A non 0 contact count always indicates a first packet */
1157 else if (contact_count)
1158 app->num_expected = contact_count;
1159 }
1160 app->prev_scantime = scantime;
1161
1162 first_packet = app->num_received == 0;
1163
1164 input = report->field[0]->hidinput->input;
1165
1166 list_for_each_entry(slot, &app->mt_usages, list) {
1167 if (!mt_process_slot(td, input, app, slot))
1168 app->num_received++;
1169 }
1170
1171 for (r = 0; r < report->maxfield; r++) {
1172 field = report->field[r];
1173 count = field->report_count;
1174
1175 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
1176 continue;
1177
1178 for (n = 0; n < count; n++)
1179 mt_process_mt_event(hid, app, field,
1180 &field->usage[n], field->value[n],
1181 first_packet);
1182 }
1183
1184 if (app->num_received >= app->num_expected)
1185 mt_sync_frame(td, app, input);
1186
1187 /*
1188 * Windows 8 specs says 2 things:
1189 * - once a contact has been reported, it has to be reported in each
1190 * subsequent report
1191 * - the report rate when fingers are present has to be at least
1192 * the refresh rate of the screen, 60 or 120 Hz
1193 *
1194 * I interprete this that the specification forces a report rate of
1195 * at least 60 Hz for a touchscreen to be certified.
1196 * Which means that if we do not get a report whithin 16 ms, either
1197 * something wrong happens, either the touchscreen forgets to send
1198 * a release. Taking a reasonable margin allows to remove issues
1199 * with USB communication or the load of the machine.
1200 *
1201 * Given that Win 8 devices are forced to send a release, this will
1202 * only affect laggish machines and the ones that have a firmware
1203 * defect.
1204 */
1205 if (app->quirks & MT_QUIRK_STICKY_FINGERS) {
1206 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1207 mod_timer(&td->release_timer,
1208 jiffies + msecs_to_jiffies(100));
1209 else
1210 del_timer(&td->release_timer);
1211 }
1212
1213 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1214 }
1215
1216 static int mt_touch_input_configured(struct hid_device *hdev,
1217 struct hid_input *hi,
1218 struct mt_application *app)
1219 {
1220 struct mt_device *td = hid_get_drvdata(hdev);
1221 struct mt_class *cls = &td->mtclass;
1222 struct input_dev *input = hi->input;
1223 int ret;
1224
1225 if (!td->maxcontacts)
1226 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
1227
1228 mt_post_parse(td, app);
1229 if (td->serial_maybe)
1230 mt_post_parse_default_settings(td, app);
1231
1232 if (cls->is_indirect)
1233 app->mt_flags |= INPUT_MT_POINTER;
1234
1235 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
1236 app->mt_flags |= INPUT_MT_DROP_UNUSED;
1237
1238 /* check for clickpads */
1239 if ((app->mt_flags & INPUT_MT_POINTER) &&
1240 (app->buttons_count == 1))
1241 td->is_buttonpad = true;
1242
1243 if (td->is_buttonpad)
1244 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
1245
1246 app->pending_palm_slots = devm_kcalloc(&hi->input->dev,
1247 BITS_TO_LONGS(td->maxcontacts),
1248 sizeof(long),
1249 GFP_KERNEL);
1250 if (!app->pending_palm_slots)
1251 return -ENOMEM;
1252
1253 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags);
1254 if (ret)
1255 return ret;
1256
1257 app->mt_flags = 0;
1258 return 0;
1259 }
1260
1261 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
1262 max, EV_KEY, (c))
1263 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
1264 struct hid_field *field, struct hid_usage *usage,
1265 unsigned long **bit, int *max)
1266 {
1267 struct mt_device *td = hid_get_drvdata(hdev);
1268 struct mt_application *application;
1269 struct mt_report_data *rdata;
1270
1271 rdata = mt_find_report_data(td, field->report);
1272 if (!rdata) {
1273 hid_err(hdev, "failed to allocate data for report\n");
1274 return 0;
1275 }
1276
1277 application = rdata->application;
1278
1279 /*
1280 * If mtclass.export_all_inputs is not set, only map fields from
1281 * TouchScreen or TouchPad collections. We need to ignore fields
1282 * that belong to other collections such as Mouse that might have
1283 * the same GenericDesktop usages.
1284 */
1285 if (!td->mtclass.export_all_inputs &&
1286 field->application != HID_DG_TOUCHSCREEN &&
1287 field->application != HID_DG_PEN &&
1288 field->application != HID_DG_TOUCHPAD &&
1289 field->application != HID_GD_KEYBOARD &&
1290 field->application != HID_GD_SYSTEM_CONTROL &&
1291 field->application != HID_CP_CONSUMER_CONTROL &&
1292 field->application != HID_GD_WIRELESS_RADIO_CTLS &&
1293 field->application != HID_GD_SYSTEM_MULTIAXIS &&
1294 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1295 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP))
1296 return -1;
1297
1298 /*
1299 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
1300 * touchpad report descriptor. We need to treat these as an array to
1301 * map usages to input keys.
1302 */
1303 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1304 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
1305 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
1306 set_bit(EV_REP, hi->input->evbit);
1307 if (field->flags & HID_MAIN_ITEM_VARIABLE)
1308 field->flags &= ~HID_MAIN_ITEM_VARIABLE;
1309 switch (usage->hid & HID_USAGE) {
1310 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break;
1311 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break;
1312 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break;
1313 case 0x6b: mt_map_key_clear(KEY_F21); break;
1314 case 0x6c: mt_map_key_clear(KEY_SLEEP); break;
1315 default:
1316 return -1;
1317 }
1318 return 1;
1319 }
1320
1321 if (rdata->is_mt_collection)
1322 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max,
1323 application);
1324
1325 /*
1326 * some egalax touchscreens have "application == DG_TOUCHSCREEN"
1327 * for the stylus. Overwrite the hid_input application
1328 */
1329 if (field->physical == HID_DG_STYLUS)
1330 hi->application = HID_DG_STYLUS;
1331
1332 /* let hid-core decide for the others */
1333 return 0;
1334 }
1335
1336 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
1337 struct hid_field *field, struct hid_usage *usage,
1338 unsigned long **bit, int *max)
1339 {
1340 struct mt_device *td = hid_get_drvdata(hdev);
1341 struct mt_report_data *rdata;
1342
1343 rdata = mt_find_report_data(td, field->report);
1344 if (rdata && rdata->is_mt_collection) {
1345 /* We own these mappings, tell hid-input to ignore them */
1346 return -1;
1347 }
1348
1349 /* let hid-core decide for the others */
1350 return 0;
1351 }
1352
1353 static int mt_event(struct hid_device *hid, struct hid_field *field,
1354 struct hid_usage *usage, __s32 value)
1355 {
1356 struct mt_device *td = hid_get_drvdata(hid);
1357 struct mt_report_data *rdata;
1358
1359 rdata = mt_find_report_data(td, field->report);
1360 if (rdata && rdata->is_mt_collection)
1361 return mt_touch_event(hid, field, usage, value);
1362
1363 return 0;
1364 }
1365
1366 static void mt_report(struct hid_device *hid, struct hid_report *report)
1367 {
1368 struct mt_device *td = hid_get_drvdata(hid);
1369 struct hid_field *field = report->field[0];
1370 struct mt_report_data *rdata;
1371
1372 if (!(hid->claimed & HID_CLAIMED_INPUT))
1373 return;
1374
1375 rdata = mt_find_report_data(td, report);
1376 if (rdata && rdata->is_mt_collection)
1377 return mt_touch_report(hid, rdata);
1378
1379 if (field && field->hidinput && field->hidinput->input)
1380 input_sync(field->hidinput->input);
1381 }
1382
1383 static bool mt_need_to_apply_feature(struct hid_device *hdev,
1384 struct hid_field *field,
1385 struct hid_usage *usage,
1386 enum latency_mode latency,
1387 bool surface_switch,
1388 bool button_switch,
1389 bool *inputmode_found)
1390 {
1391 struct mt_device *td = hid_get_drvdata(hdev);
1392 struct mt_class *cls = &td->mtclass;
1393 struct hid_report *report = field->report;
1394 unsigned int index = usage->usage_index;
1395 char *buf;
1396 u32 report_len;
1397 int max;
1398
1399 switch (usage->hid) {
1400 case HID_DG_INPUTMODE:
1401 /*
1402 * Some elan panels wrongly declare 2 input mode features,
1403 * and silently ignore when we set the value in the second
1404 * field. Skip the second feature and hope for the best.
1405 */
1406 if (*inputmode_found)
1407 return false;
1408
1409 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1410 report_len = hid_report_len(report);
1411 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1412 if (!buf) {
1413 hid_err(hdev,
1414 "failed to allocate buffer for report\n");
1415 return false;
1416 }
1417 hid_hw_raw_request(hdev, report->id, buf, report_len,
1418 HID_FEATURE_REPORT,
1419 HID_REQ_GET_REPORT);
1420 kfree(buf);
1421 }
1422
1423 field->value[index] = td->inputmode_value;
1424 *inputmode_found = true;
1425 return true;
1426
1427 case HID_DG_CONTACTMAX:
1428 if (cls->maxcontacts) {
1429 max = min_t(int, field->logical_maximum,
1430 cls->maxcontacts);
1431 if (field->value[index] != max) {
1432 field->value[index] = max;
1433 return true;
1434 }
1435 }
1436 break;
1437
1438 case HID_DG_LATENCYMODE:
1439 field->value[index] = latency;
1440 return true;
1441
1442 case HID_DG_SURFACESWITCH:
1443 field->value[index] = surface_switch;
1444 return true;
1445
1446 case HID_DG_BUTTONSWITCH:
1447 field->value[index] = button_switch;
1448 return true;
1449 }
1450
1451 return false; /* no need to update the report */
1452 }
1453
1454 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency,
1455 bool surface_switch, bool button_switch)
1456 {
1457 struct hid_report_enum *rep_enum;
1458 struct hid_report *rep;
1459 struct hid_usage *usage;
1460 int i, j;
1461 bool update_report;
1462 bool inputmode_found = false;
1463
1464 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
1465 list_for_each_entry(rep, &rep_enum->report_list, list) {
1466 update_report = false;
1467
1468 for (i = 0; i < rep->maxfield; i++) {
1469 /* Ignore if report count is out of bounds. */
1470 if (rep->field[i]->report_count < 1)
1471 continue;
1472
1473 for (j = 0; j < rep->field[i]->maxusage; j++) {
1474 usage = &rep->field[i]->usage[j];
1475
1476 if (mt_need_to_apply_feature(hdev,
1477 rep->field[i],
1478 usage,
1479 latency,
1480 surface_switch,
1481 button_switch,
1482 &inputmode_found))
1483 update_report = true;
1484 }
1485 }
1486
1487 if (update_report)
1488 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT);
1489 }
1490 }
1491
1492 static void mt_post_parse_default_settings(struct mt_device *td,
1493 struct mt_application *app)
1494 {
1495 __s32 quirks = app->quirks;
1496
1497 /* unknown serial device needs special quirks */
1498 if (list_is_singular(&app->mt_usages)) {
1499 quirks |= MT_QUIRK_ALWAYS_VALID;
1500 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1501 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1502 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1503 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1504 }
1505
1506 app->quirks = quirks;
1507 }
1508
1509 static void mt_post_parse(struct mt_device *td, struct mt_application *app)
1510 {
1511 if (!app->have_contact_count)
1512 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1513 }
1514
1515 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1516 {
1517 struct mt_device *td = hid_get_drvdata(hdev);
1518 char *name;
1519 const char *suffix = NULL;
1520 struct mt_report_data *rdata;
1521 struct mt_application *mt_application = NULL;
1522 struct hid_report *report;
1523 int ret;
1524
1525 list_for_each_entry(report, &hi->reports, hidinput_list) {
1526 rdata = mt_find_report_data(td, report);
1527 if (!rdata) {
1528 hid_err(hdev, "failed to allocate data for report\n");
1529 return -ENOMEM;
1530 }
1531
1532 mt_application = rdata->application;
1533
1534 if (rdata->is_mt_collection) {
1535 ret = mt_touch_input_configured(hdev, hi,
1536 mt_application);
1537 if (ret)
1538 return ret;
1539 }
1540 }
1541
1542 switch (hi->application) {
1543 case HID_GD_KEYBOARD:
1544 case HID_GD_KEYPAD:
1545 case HID_GD_MOUSE:
1546 case HID_DG_TOUCHPAD:
1547 case HID_GD_SYSTEM_CONTROL:
1548 case HID_CP_CONSUMER_CONTROL:
1549 case HID_GD_WIRELESS_RADIO_CTLS:
1550 case HID_GD_SYSTEM_MULTIAXIS:
1551 /* already handled by hid core */
1552 break;
1553 case HID_DG_TOUCHSCREEN:
1554 /* we do not set suffix = "Touchscreen" */
1555 hi->input->name = hdev->name;
1556 break;
1557 case HID_DG_STYLUS:
1558 /* force BTN_STYLUS to allow tablet matching in udev */
1559 __set_bit(BTN_STYLUS, hi->input->keybit);
1560 break;
1561 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1562 suffix = "Custom Media Keys";
1563 break;
1564 default:
1565 suffix = "UNKNOWN";
1566 break;
1567 }
1568
1569 if (suffix) {
1570 name = devm_kzalloc(&hi->input->dev,
1571 strlen(hdev->name) + strlen(suffix) + 2,
1572 GFP_KERNEL);
1573 if (name) {
1574 sprintf(name, "%s %s", hdev->name, suffix);
1575 hi->input->name = name;
1576 }
1577 }
1578
1579 return 0;
1580 }
1581
1582 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1583 {
1584 if (field->usage[0].hid != usage ||
1585 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1586 return;
1587
1588 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1589 field->flags |= HID_MAIN_ITEM_VARIABLE;
1590 }
1591
1592 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1593 {
1594 struct hid_report *report;
1595 int i;
1596
1597 list_for_each_entry(report,
1598 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1599 list) {
1600
1601 if (!report->maxfield)
1602 continue;
1603
1604 for (i = 0; i < report->maxfield; i++)
1605 if (report->field[i]->maxusage >= 1)
1606 mt_fix_const_field(report->field[i], usage);
1607 }
1608 }
1609
1610 static void mt_release_contacts(struct hid_device *hid)
1611 {
1612 struct hid_input *hidinput;
1613 struct mt_application *application;
1614 struct mt_device *td = hid_get_drvdata(hid);
1615
1616 list_for_each_entry(hidinput, &hid->inputs, list) {
1617 struct input_dev *input_dev = hidinput->input;
1618 struct input_mt *mt = input_dev->mt;
1619 int i;
1620
1621 if (mt) {
1622 for (i = 0; i < mt->num_slots; i++) {
1623 input_mt_slot(input_dev, i);
1624 input_mt_report_slot_state(input_dev,
1625 MT_TOOL_FINGER,
1626 false);
1627 }
1628 input_mt_sync_frame(input_dev);
1629 input_sync(input_dev);
1630 }
1631 }
1632
1633 list_for_each_entry(application, &td->applications, list) {
1634 application->num_received = 0;
1635 }
1636 }
1637
1638 static void mt_expired_timeout(struct timer_list *t)
1639 {
1640 struct mt_device *td = from_timer(td, t, release_timer);
1641 struct hid_device *hdev = td->hdev;
1642
1643 /*
1644 * An input report came in just before we release the sticky fingers,
1645 * it will take care of the sticky fingers.
1646 */
1647 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1648 return;
1649 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1650 mt_release_contacts(hdev);
1651 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1652 }
1653
1654 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1655 {
1656 int ret, i;
1657 struct mt_device *td;
1658 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1659
1660 for (i = 0; mt_classes[i].name ; i++) {
1661 if (id->driver_data == mt_classes[i].name) {
1662 mtclass = &(mt_classes[i]);
1663 break;
1664 }
1665 }
1666
1667 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1668 if (!td) {
1669 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1670 return -ENOMEM;
1671 }
1672 td->hdev = hdev;
1673 td->mtclass = *mtclass;
1674 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1675 hid_set_drvdata(hdev, td);
1676
1677 INIT_LIST_HEAD(&td->applications);
1678 INIT_LIST_HEAD(&td->reports);
1679
1680 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1681 td->serial_maybe = true;
1682
1683 /* This allows the driver to correctly support devices
1684 * that emit events over several HID messages.
1685 */
1686 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1687
1688 /*
1689 * This allows the driver to handle different input sensors
1690 * that emits events through different applications on the same HID
1691 * device.
1692 */
1693 hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
1694
1695 if (id->group != HID_GROUP_MULTITOUCH_WIN_8)
1696 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1697
1698 timer_setup(&td->release_timer, mt_expired_timeout, 0);
1699
1700 ret = hid_parse(hdev);
1701 if (ret != 0)
1702 return ret;
1703
1704 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1705 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1706
1707 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1708 if (ret)
1709 return ret;
1710
1711 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1712 if (ret)
1713 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1714 hdev->name);
1715
1716 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
1717
1718 return 0;
1719 }
1720
1721 #ifdef CONFIG_PM
1722 static int mt_reset_resume(struct hid_device *hdev)
1723 {
1724 mt_release_contacts(hdev);
1725 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
1726 return 0;
1727 }
1728
1729 static int mt_resume(struct hid_device *hdev)
1730 {
1731 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1732 * It should be safe to send it to other devices too.
1733 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1734
1735 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1736
1737 return 0;
1738 }
1739 #endif
1740
1741 static void mt_remove(struct hid_device *hdev)
1742 {
1743 struct mt_device *td = hid_get_drvdata(hdev);
1744
1745 del_timer_sync(&td->release_timer);
1746
1747 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1748 hid_hw_stop(hdev);
1749 }
1750
1751 /*
1752 * This list contains only:
1753 * - VID/PID of products not working with the default multitouch handling
1754 * - 2 generic rules.
1755 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1756 */
1757 static const struct hid_device_id mt_devices[] = {
1758
1759 /* 3M panels */
1760 { .driver_data = MT_CLS_3M,
1761 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1762 USB_DEVICE_ID_3M1968) },
1763 { .driver_data = MT_CLS_3M,
1764 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1765 USB_DEVICE_ID_3M2256) },
1766 { .driver_data = MT_CLS_3M,
1767 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1768 USB_DEVICE_ID_3M3266) },
1769
1770 /* Alps devices */
1771 { .driver_data = MT_CLS_WIN_8_DUAL,
1772 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1773 USB_VENDOR_ID_ALPS_JP,
1774 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) },
1775 { .driver_data = MT_CLS_WIN_8_DUAL,
1776 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1777 USB_VENDOR_ID_ALPS_JP,
1778 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) },
1779 { .driver_data = MT_CLS_WIN_8_DUAL,
1780 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1781 USB_VENDOR_ID_ALPS_JP,
1782 HID_DEVICE_ID_ALPS_1222) },
1783
1784 /* Lenovo X1 TAB Gen 2 */
1785 { .driver_data = MT_CLS_WIN_8_DUAL,
1786 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1787 USB_VENDOR_ID_LENOVO,
1788 USB_DEVICE_ID_LENOVO_X1_TAB) },
1789
1790 /* Lenovo X1 TAB Gen 3 */
1791 { .driver_data = MT_CLS_WIN_8_DUAL,
1792 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1793 USB_VENDOR_ID_LENOVO,
1794 USB_DEVICE_ID_LENOVO_X1_TAB3) },
1795
1796 /* Anton devices */
1797 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1798 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1799 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1800
1801 /* Asus T304UA */
1802 { .driver_data = MT_CLS_ASUS,
1803 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1804 USB_VENDOR_ID_ASUSTEK,
1805 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
1806
1807 /* Atmel panels */
1808 { .driver_data = MT_CLS_SERIAL,
1809 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1810 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1811
1812 /* Baanto multitouch devices */
1813 { .driver_data = MT_CLS_NSMU,
1814 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1815 USB_DEVICE_ID_BAANTO_MT_190W2) },
1816
1817 /* Cando panels */
1818 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1819 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1820 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1821 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1822 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1823 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1824
1825 /* Chunghwa Telecom touch panels */
1826 { .driver_data = MT_CLS_NSMU,
1827 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1828 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1829
1830 /* Cirque devices */
1831 { .driver_data = MT_CLS_WIN_8_DUAL,
1832 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1833 I2C_VENDOR_ID_CIRQUE,
1834 I2C_PRODUCT_ID_CIRQUE_121F) },
1835
1836 /* CJTouch panels */
1837 { .driver_data = MT_CLS_NSMU,
1838 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1839 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1840 { .driver_data = MT_CLS_NSMU,
1841 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1842 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1843
1844 /* CVTouch panels */
1845 { .driver_data = MT_CLS_NSMU,
1846 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1847 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1848
1849 /* eGalax devices (resistive) */
1850 { .driver_data = MT_CLS_EGALAX,
1851 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1852 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1853 { .driver_data = MT_CLS_EGALAX,
1854 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1855 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1856
1857 /* eGalax devices (capacitive) */
1858 { .driver_data = MT_CLS_EGALAX_SERIAL,
1859 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1860 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1861 { .driver_data = MT_CLS_EGALAX,
1862 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1863 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1864 { .driver_data = MT_CLS_EGALAX_SERIAL,
1865 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1866 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1867 { .driver_data = MT_CLS_EGALAX_SERIAL,
1868 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1869 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1870 { .driver_data = MT_CLS_EGALAX_SERIAL,
1871 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1872 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1873 { .driver_data = MT_CLS_EGALAX_SERIAL,
1874 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1875 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1876 { .driver_data = MT_CLS_EGALAX,
1877 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1878 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1879 { .driver_data = MT_CLS_EGALAX,
1880 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1881 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1882 { .driver_data = MT_CLS_EGALAX_SERIAL,
1883 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1884 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1885 { .driver_data = MT_CLS_EGALAX,
1886 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1887 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1888 { .driver_data = MT_CLS_EGALAX,
1889 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1890 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1891 { .driver_data = MT_CLS_EGALAX,
1892 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1893 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1894 { .driver_data = MT_CLS_EGALAX,
1895 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1896 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1897 { .driver_data = MT_CLS_EGALAX_SERIAL,
1898 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1899 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1900 { .driver_data = MT_CLS_EGALAX_SERIAL,
1901 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1902 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1903 { .driver_data = MT_CLS_EGALAX_SERIAL,
1904 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1905 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1906
1907 /* Elitegroup panel */
1908 { .driver_data = MT_CLS_SERIAL,
1909 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1910 USB_DEVICE_ID_ELITEGROUP_05D8) },
1911
1912 /* Flatfrog Panels */
1913 { .driver_data = MT_CLS_FLATFROG,
1914 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1915 USB_DEVICE_ID_MULTITOUCH_3200) },
1916
1917 /* FocalTech Panels */
1918 { .driver_data = MT_CLS_SERIAL,
1919 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1920 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1921
1922 /* GeneralTouch panel */
1923 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1924 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1925 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1926 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1927 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1928 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1929 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1930 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1931 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1932 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1933 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1934 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
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_0106) },
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_010A) },
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_E100) },
1944
1945 /* Gametel game controller */
1946 { .driver_data = MT_CLS_NSMU,
1947 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1948 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1949
1950 /* GoodTouch panels */
1951 { .driver_data = MT_CLS_NSMU,
1952 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1953 USB_DEVICE_ID_GOODTOUCH_000f) },
1954
1955 /* Hanvon panels */
1956 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1957 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1958 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1959
1960 /* Ilitek dual touch panel */
1961 { .driver_data = MT_CLS_NSMU,
1962 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1963 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1964
1965 /* LG Melfas panel */
1966 { .driver_data = MT_CLS_LG,
1967 HID_USB_DEVICE(USB_VENDOR_ID_LG,
1968 USB_DEVICE_ID_LG_MELFAS_MT) },
1969
1970 /* MosArt panels */
1971 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1972 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1973 USB_DEVICE_ID_ASUS_T91MT)},
1974 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1975 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1976 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1977 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1978 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1979 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1980
1981 /* Novatek Panel */
1982 { .driver_data = MT_CLS_NSMU,
1983 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1984 USB_DEVICE_ID_NOVATEK_PCT) },
1985
1986 /* Ntrig Panel */
1987 { .driver_data = MT_CLS_NSMU,
1988 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1989 USB_VENDOR_ID_NTRIG, 0x1b05) },
1990
1991 /* Panasonic panels */
1992 { .driver_data = MT_CLS_PANASONIC,
1993 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1994 USB_DEVICE_ID_PANABOARD_UBT780) },
1995 { .driver_data = MT_CLS_PANASONIC,
1996 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1997 USB_DEVICE_ID_PANABOARD_UBT880) },
1998
1999 /* PixArt optical touch screen */
2000 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2001 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2002 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
2003 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2004 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2005 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
2006 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2007 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2008 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
2009
2010 /* PixCir-based panels */
2011 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
2012 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
2013 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
2014
2015 /* Quanta-based panels */
2016 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
2017 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
2018 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
2019
2020 /* Razer touchpads */
2021 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH,
2022 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2023 USB_VENDOR_ID_SYNAPTICS, 0x8323) },
2024
2025 /* Stantum panels */
2026 { .driver_data = MT_CLS_CONFIDENCE,
2027 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
2028 USB_DEVICE_ID_MTP_STM)},
2029
2030 /* TopSeed panels */
2031 { .driver_data = MT_CLS_TOPSEED,
2032 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
2033 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
2034
2035 /* Touch International panels */
2036 { .driver_data = MT_CLS_NSMU,
2037 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
2038 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
2039
2040 /* Unitec panels */
2041 { .driver_data = MT_CLS_NSMU,
2042 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2043 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
2044 { .driver_data = MT_CLS_NSMU,
2045 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2046 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
2047
2048 /* VTL panels */
2049 { .driver_data = MT_CLS_VTL,
2050 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
2051 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
2052
2053 /* Wistron panels */
2054 { .driver_data = MT_CLS_NSMU,
2055 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
2056 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
2057
2058 /* XAT */
2059 { .driver_data = MT_CLS_NSMU,
2060 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
2061 USB_DEVICE_ID_XAT_CSR) },
2062
2063 /* Xiroku */
2064 { .driver_data = MT_CLS_NSMU,
2065 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2066 USB_DEVICE_ID_XIROKU_SPX) },
2067 { .driver_data = MT_CLS_NSMU,
2068 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2069 USB_DEVICE_ID_XIROKU_MPX) },
2070 { .driver_data = MT_CLS_NSMU,
2071 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2072 USB_DEVICE_ID_XIROKU_CSR) },
2073 { .driver_data = MT_CLS_NSMU,
2074 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2075 USB_DEVICE_ID_XIROKU_SPX1) },
2076 { .driver_data = MT_CLS_NSMU,
2077 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2078 USB_DEVICE_ID_XIROKU_MPX1) },
2079 { .driver_data = MT_CLS_NSMU,
2080 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2081 USB_DEVICE_ID_XIROKU_CSR1) },
2082 { .driver_data = MT_CLS_NSMU,
2083 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2084 USB_DEVICE_ID_XIROKU_SPX2) },
2085 { .driver_data = MT_CLS_NSMU,
2086 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2087 USB_DEVICE_ID_XIROKU_MPX2) },
2088 { .driver_data = MT_CLS_NSMU,
2089 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2090 USB_DEVICE_ID_XIROKU_CSR2) },
2091
2092 /* Google MT devices */
2093 { .driver_data = MT_CLS_GOOGLE,
2094 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
2095 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
2096
2097 /* Generic MT device */
2098 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
2099
2100 /* Generic Win 8 certified MT device */
2101 { .driver_data = MT_CLS_WIN_8,
2102 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
2103 HID_ANY_ID, HID_ANY_ID) },
2104 { }
2105 };
2106 MODULE_DEVICE_TABLE(hid, mt_devices);
2107
2108 static const struct hid_usage_id mt_grabbed_usages[] = {
2109 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
2110 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
2111 };
2112
2113 static struct hid_driver mt_driver = {
2114 .name = "hid-multitouch",
2115 .id_table = mt_devices,
2116 .probe = mt_probe,
2117 .remove = mt_remove,
2118 .input_mapping = mt_input_mapping,
2119 .input_mapped = mt_input_mapped,
2120 .input_configured = mt_input_configured,
2121 .feature_mapping = mt_feature_mapping,
2122 .usage_table = mt_grabbed_usages,
2123 .event = mt_event,
2124 .report = mt_report,
2125 #ifdef CONFIG_PM
2126 .reset_resume = mt_reset_resume,
2127 .resume = mt_resume,
2128 #endif
2129 };
2130 module_hid_driver(mt_driver);
Linux with added FPC-III support