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HID: multitouch: force retrieving of Win8 signature blob
[linux-2.6-block.git] / drivers / hid / hid-multitouch.c
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1/*
2 * HID driver for multitouch panels
3 *
4 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
5 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
6 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
7 * Copyright (c) 2012-2013 Red Hat, Inc
8 *
9 * This code is partly based on hid-egalax.c:
10 *
11 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
12 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
13 * Copyright (c) 2010 Canonical, Ltd.
14 *
15 * This code is partly based on hid-3m-pct.c:
16 *
17 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
18 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
19 * Copyright (c) 2010 Canonical, Ltd.
20 *
21 */
22
23/*
24 * This program is free software; you can redistribute it and/or modify it
25 * under the terms of the GNU General Public License as published by the Free
26 * Software Foundation; either version 2 of the License, or (at your option)
27 * any later version.
28 */
29
30/*
31 * This driver is regularly tested thanks to the tool hid-test[1].
32 * This tool relies on hid-replay[2] and a database of hid devices[3].
33 * Please run these regression tests before patching this module so that
34 * your patch won't break existing known devices.
35 *
36 * [1] https://github.com/bentiss/hid-test
37 * [2] https://github.com/bentiss/hid-replay
38 * [3] https://github.com/bentiss/hid-devices
39 */
40
41#include <linux/device.h>
42#include <linux/hid.h>
43#include <linux/module.h>
44#include <linux/slab.h>
45#include <linux/input/mt.h>
46#include <linux/string.h>
47
48
49MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
50MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
51MODULE_DESCRIPTION("HID multitouch panels");
52MODULE_LICENSE("GPL");
53
54#include "hid-ids.h"
55
56/* quirks to control the device */
57#define MT_QUIRK_NOT_SEEN_MEANS_UP (1 << 0)
58#define MT_QUIRK_SLOT_IS_CONTACTID (1 << 1)
59#define MT_QUIRK_CYPRESS (1 << 2)
60#define MT_QUIRK_SLOT_IS_CONTACTNUMBER (1 << 3)
61#define MT_QUIRK_ALWAYS_VALID (1 << 4)
62#define MT_QUIRK_VALID_IS_INRANGE (1 << 5)
63#define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 6)
64#define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 8)
65#define MT_QUIRK_NO_AREA (1 << 9)
66#define MT_QUIRK_IGNORE_DUPLICATES (1 << 10)
67#define MT_QUIRK_HOVERING (1 << 11)
68#define MT_QUIRK_CONTACT_CNT_ACCURATE (1 << 12)
69#define MT_QUIRK_FORCE_GET_FEATURE (1 << 13)
70
71#define MT_INPUTMODE_TOUCHSCREEN 0x02
72#define MT_INPUTMODE_TOUCHPAD 0x03
73
74#define MT_BUTTONTYPE_CLICKPAD 0
75
76struct mt_slot {
77 __s32 x, y, cx, cy, p, w, h;
78 __s32 contactid; /* the device ContactID assigned to this slot */
79 bool touch_state; /* is the touch valid? */
80 bool inrange_state; /* is the finger in proximity of the sensor? */
81};
82
83struct mt_class {
84 __s32 name; /* MT_CLS */
85 __s32 quirks;
86 __s32 sn_move; /* Signal/noise ratio for move events */
87 __s32 sn_width; /* Signal/noise ratio for width events */
88 __s32 sn_height; /* Signal/noise ratio for height events */
89 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
90 __u8 maxcontacts;
91 bool is_indirect; /* true for touchpads */
92 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
93};
94
95struct mt_fields {
96 unsigned usages[HID_MAX_FIELDS];
97 unsigned int length;
98};
99
100struct mt_device {
101 struct mt_slot curdata; /* placeholder of incoming data */
102 struct mt_class mtclass; /* our mt device class */
103 struct mt_fields *fields; /* temporary placeholder for storing the
104 multitouch fields */
105 int cc_index; /* contact count field index in the report */
106 int cc_value_index; /* contact count value index in the field */
107 unsigned last_slot_field; /* the last field of a slot */
108 unsigned mt_report_id; /* the report ID of the multitouch device */
109 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */
110 __s16 inputmode_index; /* InputMode HID feature index in the report */
111 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature,
112 -1 if non-existent */
113 __u8 inputmode_value; /* InputMode HID feature value */
114 __u8 num_received; /* how many contacts we received */
115 __u8 num_expected; /* expected last contact index */
116 __u8 maxcontacts;
117 __u8 touches_by_report; /* how many touches are present in one report:
118 * 1 means we should use a serial protocol
119 * > 1 means hybrid (multitouch) protocol */
120 __u8 buttons_count; /* number of physical buttons per touchpad */
121 bool is_buttonpad; /* is this device a button pad? */
122 bool serial_maybe; /* need to check for serial protocol */
123 bool curvalid; /* is the current contact valid? */
124 unsigned mt_flags; /* flags to pass to input-mt */
125};
126
127static void mt_post_parse_default_settings(struct mt_device *td);
128static void mt_post_parse(struct mt_device *td);
129
130/* classes of device behavior */
131#define MT_CLS_DEFAULT 0x0001
132
133#define MT_CLS_SERIAL 0x0002
134#define MT_CLS_CONFIDENCE 0x0003
135#define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
136#define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
137#define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
138#define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
139/* reserved 0x0008 */
140#define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
141#define MT_CLS_NSMU 0x000a
142/* reserved 0x0010 */
143/* reserved 0x0011 */
144#define MT_CLS_WIN_8 0x0012
145#define MT_CLS_EXPORT_ALL_INPUTS 0x0013
146
147/* vendor specific classes */
148#define MT_CLS_3M 0x0101
149/* reserved 0x0102 */
150#define MT_CLS_EGALAX 0x0103
151#define MT_CLS_EGALAX_SERIAL 0x0104
152#define MT_CLS_TOPSEED 0x0105
153#define MT_CLS_PANASONIC 0x0106
154#define MT_CLS_FLATFROG 0x0107
155#define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
156#define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
157#define MT_CLS_VTL 0x0110
158
159#define MT_DEFAULT_MAXCONTACT 10
160#define MT_MAX_MAXCONTACT 250
161
162#define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
163#define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
164
165/*
166 * these device-dependent functions determine what slot corresponds
167 * to a valid contact that was just read.
168 */
169
170static int cypress_compute_slot(struct mt_device *td)
171{
172 if (td->curdata.contactid != 0 || td->num_received == 0)
173 return td->curdata.contactid;
174 else
175 return -1;
176}
177
178static struct mt_class mt_classes[] = {
179 { .name = MT_CLS_DEFAULT,
180 .quirks = MT_QUIRK_ALWAYS_VALID |
181 MT_QUIRK_CONTACT_CNT_ACCURATE },
182 { .name = MT_CLS_NSMU,
183 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
184 { .name = MT_CLS_SERIAL,
185 .quirks = MT_QUIRK_ALWAYS_VALID},
186 { .name = MT_CLS_CONFIDENCE,
187 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
188 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
189 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
190 MT_QUIRK_SLOT_IS_CONTACTID },
191 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
192 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
193 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
194 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
195 .quirks = MT_QUIRK_VALID_IS_INRANGE |
196 MT_QUIRK_SLOT_IS_CONTACTID,
197 .maxcontacts = 2 },
198 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
199 .quirks = MT_QUIRK_VALID_IS_INRANGE |
200 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
201 .maxcontacts = 2 },
202 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
203 .quirks = MT_QUIRK_VALID_IS_INRANGE |
204 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
205 { .name = MT_CLS_WIN_8,
206 .quirks = MT_QUIRK_ALWAYS_VALID |
207 MT_QUIRK_IGNORE_DUPLICATES |
208 MT_QUIRK_HOVERING |
209 MT_QUIRK_CONTACT_CNT_ACCURATE },
210 { .name = MT_CLS_EXPORT_ALL_INPUTS,
211 .quirks = MT_QUIRK_ALWAYS_VALID |
212 MT_QUIRK_CONTACT_CNT_ACCURATE,
213 .export_all_inputs = true },
214
215 /*
216 * vendor specific classes
217 */
218 { .name = MT_CLS_3M,
219 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
220 MT_QUIRK_SLOT_IS_CONTACTID,
221 .sn_move = 2048,
222 .sn_width = 128,
223 .sn_height = 128,
224 .maxcontacts = 60,
225 },
226 { .name = MT_CLS_EGALAX,
227 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
228 MT_QUIRK_VALID_IS_INRANGE,
229 .sn_move = 4096,
230 .sn_pressure = 32,
231 },
232 { .name = MT_CLS_EGALAX_SERIAL,
233 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
234 MT_QUIRK_ALWAYS_VALID,
235 .sn_move = 4096,
236 .sn_pressure = 32,
237 },
238 { .name = MT_CLS_TOPSEED,
239 .quirks = MT_QUIRK_ALWAYS_VALID,
240 .is_indirect = true,
241 .maxcontacts = 2,
242 },
243 { .name = MT_CLS_PANASONIC,
244 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
245 .maxcontacts = 4 },
246 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
247 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
248 MT_QUIRK_VALID_IS_INRANGE |
249 MT_QUIRK_SLOT_IS_CONTACTID,
250 .maxcontacts = 2
251 },
252 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
253 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
254 MT_QUIRK_SLOT_IS_CONTACTID
255 },
256
257 { .name = MT_CLS_FLATFROG,
258 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
259 MT_QUIRK_NO_AREA,
260 .sn_move = 2048,
261 .maxcontacts = 40,
262 },
263 { .name = MT_CLS_VTL,
264 .quirks = MT_QUIRK_ALWAYS_VALID |
265 MT_QUIRK_CONTACT_CNT_ACCURATE |
266 MT_QUIRK_FORCE_GET_FEATURE,
267 },
268 { }
269};
270
271static ssize_t mt_show_quirks(struct device *dev,
272 struct device_attribute *attr,
273 char *buf)
274{
275 struct hid_device *hdev = to_hid_device(dev);
276 struct mt_device *td = hid_get_drvdata(hdev);
277
278 return sprintf(buf, "%u\n", td->mtclass.quirks);
279}
280
281static ssize_t mt_set_quirks(struct device *dev,
282 struct device_attribute *attr,
283 const char *buf, size_t count)
284{
285 struct hid_device *hdev = to_hid_device(dev);
286 struct mt_device *td = hid_get_drvdata(hdev);
287
288 unsigned long val;
289
290 if (kstrtoul(buf, 0, &val))
291 return -EINVAL;
292
293 td->mtclass.quirks = val;
294
295 if (td->cc_index < 0)
296 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
297
298 return count;
299}
300
301static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
302
303static struct attribute *sysfs_attrs[] = {
304 &dev_attr_quirks.attr,
305 NULL
306};
307
308static struct attribute_group mt_attribute_group = {
309 .attrs = sysfs_attrs
310};
311
312static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
313{
314 struct mt_device *td = hid_get_drvdata(hdev);
315 int ret, size = hid_report_len(report);
316 u8 *buf;
317
318 /*
319 * Only fetch the feature report if initial reports are not already
320 * been retrieved. Currently this is only done for Windows 8 touch
321 * devices.
322 */
323 if (!(hdev->quirks & HID_QUIRK_NO_INIT_REPORTS))
324 return;
325 if (td->mtclass.name != MT_CLS_WIN_8)
326 return;
327
328 buf = hid_alloc_report_buf(report, GFP_KERNEL);
329 if (!buf)
330 return;
331
332 ret = hid_hw_raw_request(hdev, report->id, buf, size,
333 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
334 if (ret < 0) {
335 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
336 report->id);
337 } else {
338 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
339 size, 0);
340 if (ret)
341 dev_warn(&hdev->dev, "failed to report feature\n");
342 }
343
344 kfree(buf);
345}
346
347static void mt_feature_mapping(struct hid_device *hdev,
348 struct hid_field *field, struct hid_usage *usage)
349{
350 struct mt_device *td = hid_get_drvdata(hdev);
351
352 switch (usage->hid) {
353 case HID_DG_INPUTMODE:
354 /* Ignore if value index is out of bounds. */
355 if (usage->usage_index >= field->report_count) {
356 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
357 break;
358 }
359
360 if (td->inputmode < 0) {
361 td->inputmode = field->report->id;
362 td->inputmode_index = usage->usage_index;
363 } else {
364 /*
365 * Some elan panels wrongly declare 2 input mode
366 * features, and silently ignore when we set the
367 * value in the second field. Skip the second feature
368 * and hope for the best.
369 */
370 dev_info(&hdev->dev,
371 "Ignoring the extra HID_DG_INPUTMODE\n");
372 }
373
374 break;
375 case HID_DG_CONTACTMAX:
376 mt_get_feature(hdev, field->report);
377
378 td->maxcontact_report_id = field->report->id;
379 td->maxcontacts = field->value[0];
380 if (!td->maxcontacts &&
381 field->logical_maximum <= MT_MAX_MAXCONTACT)
382 td->maxcontacts = field->logical_maximum;
383 if (td->mtclass.maxcontacts)
384 /* check if the maxcontacts is given by the class */
385 td->maxcontacts = td->mtclass.maxcontacts;
386
387 break;
388 case HID_DG_BUTTONTYPE:
389 if (usage->usage_index >= field->report_count) {
390 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
391 break;
392 }
393
394 mt_get_feature(hdev, field->report);
395 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
396 td->is_buttonpad = true;
397
398 break;
399 case 0xff0000c5:
400 /* Retrieve the Win8 blob once to enable some devices */
401 if (usage->usage_index == 0)
402 mt_get_feature(hdev, field->report);
403 break;
404 }
405}
406
407static void set_abs(struct input_dev *input, unsigned int code,
408 struct hid_field *field, int snratio)
409{
410 int fmin = field->logical_minimum;
411 int fmax = field->logical_maximum;
412 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
413 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
414 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
415}
416
417static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
418 struct hid_input *hi)
419{
420 struct mt_fields *f = td->fields;
421
422 if (f->length >= HID_MAX_FIELDS)
423 return;
424
425 f->usages[f->length++] = usage->hid;
426}
427
428static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
429 struct hid_field *field, struct hid_usage *usage,
430 unsigned long **bit, int *max)
431{
432 struct mt_device *td = hid_get_drvdata(hdev);
433 struct mt_class *cls = &td->mtclass;
434 int code;
435 struct hid_usage *prev_usage = NULL;
436
437 if (field->application == HID_DG_TOUCHSCREEN)
438 td->mt_flags |= INPUT_MT_DIRECT;
439
440 /*
441 * Model touchscreens providing buttons as touchpads.
442 */
443 if (field->application == HID_DG_TOUCHPAD ||
444 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
445 td->mt_flags |= INPUT_MT_POINTER;
446 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
447 }
448
449 /* count the buttons on touchpads */
450 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
451 td->buttons_count++;
452
453 if (usage->usage_index)
454 prev_usage = &field->usage[usage->usage_index - 1];
455
456 switch (usage->hid & HID_USAGE_PAGE) {
457
458 case HID_UP_GENDESK:
459 switch (usage->hid) {
460 case HID_GD_X:
461 if (prev_usage && (prev_usage->hid == usage->hid)) {
462 hid_map_usage(hi, usage, bit, max,
463 EV_ABS, ABS_MT_TOOL_X);
464 set_abs(hi->input, ABS_MT_TOOL_X, field,
465 cls->sn_move);
466 } else {
467 hid_map_usage(hi, usage, bit, max,
468 EV_ABS, ABS_MT_POSITION_X);
469 set_abs(hi->input, ABS_MT_POSITION_X, field,
470 cls->sn_move);
471 }
472
473 mt_store_field(usage, td, hi);
474 return 1;
475 case HID_GD_Y:
476 if (prev_usage && (prev_usage->hid == usage->hid)) {
477 hid_map_usage(hi, usage, bit, max,
478 EV_ABS, ABS_MT_TOOL_Y);
479 set_abs(hi->input, ABS_MT_TOOL_Y, field,
480 cls->sn_move);
481 } else {
482 hid_map_usage(hi, usage, bit, max,
483 EV_ABS, ABS_MT_POSITION_Y);
484 set_abs(hi->input, ABS_MT_POSITION_Y, field,
485 cls->sn_move);
486 }
487
488 mt_store_field(usage, td, hi);
489 return 1;
490 }
491 return 0;
492
493 case HID_UP_DIGITIZER:
494 switch (usage->hid) {
495 case HID_DG_INRANGE:
496 if (cls->quirks & MT_QUIRK_HOVERING) {
497 hid_map_usage(hi, usage, bit, max,
498 EV_ABS, ABS_MT_DISTANCE);
499 input_set_abs_params(hi->input,
500 ABS_MT_DISTANCE, 0, 1, 0, 0);
501 }
502 mt_store_field(usage, td, hi);
503 return 1;
504 case HID_DG_CONFIDENCE:
505 if (cls->name == MT_CLS_WIN_8 &&
506 field->application == HID_DG_TOUCHPAD) {
507 cls->quirks &= ~MT_QUIRK_ALWAYS_VALID;
508 cls->quirks |= MT_QUIRK_VALID_IS_CONFIDENCE;
509 }
510 mt_store_field(usage, td, hi);
511 return 1;
512 case HID_DG_TIPSWITCH:
513 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
514 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
515 mt_store_field(usage, td, hi);
516 return 1;
517 case HID_DG_CONTACTID:
518 mt_store_field(usage, td, hi);
519 td->touches_by_report++;
520 td->mt_report_id = field->report->id;
521 return 1;
522 case HID_DG_WIDTH:
523 hid_map_usage(hi, usage, bit, max,
524 EV_ABS, ABS_MT_TOUCH_MAJOR);
525 if (!(cls->quirks & MT_QUIRK_NO_AREA))
526 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
527 cls->sn_width);
528 mt_store_field(usage, td, hi);
529 return 1;
530 case HID_DG_HEIGHT:
531 hid_map_usage(hi, usage, bit, max,
532 EV_ABS, ABS_MT_TOUCH_MINOR);
533 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
534 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
535 cls->sn_height);
536 input_set_abs_params(hi->input,
537 ABS_MT_ORIENTATION, 0, 1, 0, 0);
538 }
539 mt_store_field(usage, td, hi);
540 return 1;
541 case HID_DG_TIPPRESSURE:
542 hid_map_usage(hi, usage, bit, max,
543 EV_ABS, ABS_MT_PRESSURE);
544 set_abs(hi->input, ABS_MT_PRESSURE, field,
545 cls->sn_pressure);
546 mt_store_field(usage, td, hi);
547 return 1;
548 case HID_DG_CONTACTCOUNT:
549 /* Ignore if indexes are out of bounds. */
550 if (field->index >= field->report->maxfield ||
551 usage->usage_index >= field->report_count)
552 return 1;
553 td->cc_index = field->index;
554 td->cc_value_index = usage->usage_index;
555 return 1;
556 case HID_DG_CONTACTMAX:
557 /* we don't set td->last_slot_field as contactcount and
558 * contact max are global to the report */
559 return -1;
560 case HID_DG_TOUCH:
561 /* Legacy devices use TIPSWITCH and not TOUCH.
562 * Let's just ignore this field. */
563 return -1;
564 }
565 /* let hid-input decide for the others */
566 return 0;
567
568 case HID_UP_BUTTON:
569 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
570 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
571 input_set_capability(hi->input, EV_KEY, code);
572 return 1;
573
574 case 0xff000000:
575 /* we do not want to map these: no input-oriented meaning */
576 return -1;
577 }
578
579 return 0;
580}
581
582static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi,
583 struct hid_field *field, struct hid_usage *usage,
584 unsigned long **bit, int *max)
585{
586 if (usage->type == EV_KEY || usage->type == EV_ABS)
587 set_bit(usage->type, hi->input->evbit);
588
589 return -1;
590}
591
592static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
593{
594 __s32 quirks = td->mtclass.quirks;
595
596 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
597 return td->curdata.contactid;
598
599 if (quirks & MT_QUIRK_CYPRESS)
600 return cypress_compute_slot(td);
601
602 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
603 return td->num_received;
604
605 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
606 return td->curdata.contactid - 1;
607
608 return input_mt_get_slot_by_key(input, td->curdata.contactid);
609}
610
611/*
612 * this function is called when a whole contact has been processed,
613 * so that it can assign it to a slot and store the data there
614 */
615static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
616{
617 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
618 td->num_received >= td->num_expected)
619 return;
620
621 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
622 int slotnum = mt_compute_slot(td, input);
623 struct mt_slot *s = &td->curdata;
624 struct input_mt *mt = input->mt;
625
626 if (slotnum < 0 || slotnum >= td->maxcontacts)
627 return;
628
629 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
630 struct input_mt_slot *slot = &mt->slots[slotnum];
631 if (input_mt_is_active(slot) &&
632 input_mt_is_used(mt, slot))
633 return;
634 }
635
636 input_mt_slot(input, slotnum);
637 input_mt_report_slot_state(input, MT_TOOL_FINGER,
638 s->touch_state || s->inrange_state);
639 if (s->touch_state || s->inrange_state) {
640 /* this finger is in proximity of the sensor */
641 int wide = (s->w > s->h);
642 /* divided by two to match visual scale of touch */
643 int major = max(s->w, s->h) >> 1;
644 int minor = min(s->w, s->h) >> 1;
645
646 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
647 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
648 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
649 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
650 input_event(input, EV_ABS, ABS_MT_DISTANCE,
651 !s->touch_state);
652 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
653 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
654 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
655 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
656 }
657 }
658
659 td->num_received++;
660}
661
662/*
663 * this function is called when a whole packet has been received and processed,
664 * so that it can decide what to send to the input layer.
665 */
666static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
667{
668 input_mt_sync_frame(input);
669 input_sync(input);
670 td->num_received = 0;
671}
672
673static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
674 struct hid_usage *usage, __s32 value)
675{
676 /* we will handle the hidinput part later, now remains hiddev */
677 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
678 hid->hiddev_hid_event(hid, field, usage, value);
679
680 return 1;
681}
682
683static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
684 struct hid_usage *usage, __s32 value)
685{
686 struct mt_device *td = hid_get_drvdata(hid);
687 __s32 quirks = td->mtclass.quirks;
688 struct input_dev *input = field->hidinput->input;
689
690 if (hid->claimed & HID_CLAIMED_INPUT) {
691 switch (usage->hid) {
692 case HID_DG_INRANGE:
693 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
694 td->curvalid = value;
695 if (quirks & MT_QUIRK_HOVERING)
696 td->curdata.inrange_state = value;
697 break;
698 case HID_DG_TIPSWITCH:
699 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
700 td->curvalid = value;
701 td->curdata.touch_state = value;
702 break;
703 case HID_DG_CONFIDENCE:
704 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
705 td->curvalid = value;
706 break;
707 case HID_DG_CONTACTID:
708 td->curdata.contactid = value;
709 break;
710 case HID_DG_TIPPRESSURE:
711 td->curdata.p = value;
712 break;
713 case HID_GD_X:
714 if (usage->code == ABS_MT_TOOL_X)
715 td->curdata.cx = value;
716 else
717 td->curdata.x = value;
718 break;
719 case HID_GD_Y:
720 if (usage->code == ABS_MT_TOOL_Y)
721 td->curdata.cy = value;
722 else
723 td->curdata.y = value;
724 break;
725 case HID_DG_WIDTH:
726 td->curdata.w = value;
727 break;
728 case HID_DG_HEIGHT:
729 td->curdata.h = value;
730 break;
731 case HID_DG_CONTACTCOUNT:
732 break;
733 case HID_DG_TOUCH:
734 /* do nothing */
735 break;
736
737 default:
738 if (usage->type)
739 input_event(input, usage->type, usage->code,
740 value);
741 return;
742 }
743
744 if (usage->usage_index + 1 == field->report_count) {
745 /* we only take into account the last report. */
746 if (usage->hid == td->last_slot_field)
747 mt_complete_slot(td, field->hidinput->input);
748 }
749
750 }
751}
752
753static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
754{
755 struct mt_device *td = hid_get_drvdata(hid);
756 struct hid_field *field;
757 unsigned count;
758 int r, n;
759
760 /*
761 * Includes multi-packet support where subsequent
762 * packets are sent with zero contactcount.
763 */
764 if (td->cc_index >= 0) {
765 struct hid_field *field = report->field[td->cc_index];
766 int value = field->value[td->cc_value_index];
767 if (value)
768 td->num_expected = value;
769 }
770
771 for (r = 0; r < report->maxfield; r++) {
772 field = report->field[r];
773 count = field->report_count;
774
775 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
776 continue;
777
778 for (n = 0; n < count; n++)
779 mt_process_mt_event(hid, field, &field->usage[n],
780 field->value[n]);
781 }
782
783 if (td->num_received >= td->num_expected)
784 mt_sync_frame(td, report->field[0]->hidinput->input);
785}
786
787static int mt_touch_input_configured(struct hid_device *hdev,
788 struct hid_input *hi)
789{
790 struct mt_device *td = hid_get_drvdata(hdev);
791 struct mt_class *cls = &td->mtclass;
792 struct input_dev *input = hi->input;
793 int ret;
794
795 if (!td->maxcontacts)
796 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
797
798 mt_post_parse(td);
799 if (td->serial_maybe)
800 mt_post_parse_default_settings(td);
801
802 if (cls->is_indirect)
803 td->mt_flags |= INPUT_MT_POINTER;
804
805 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
806 td->mt_flags |= INPUT_MT_DROP_UNUSED;
807
808 /* check for clickpads */
809 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
810 td->is_buttonpad = true;
811
812 if (td->is_buttonpad)
813 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
814
815 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
816 if (ret)
817 return ret;
818
819 td->mt_flags = 0;
820 return 0;
821}
822
823static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
824 struct hid_field *field, struct hid_usage *usage,
825 unsigned long **bit, int *max)
826{
827 struct mt_device *td = hid_get_drvdata(hdev);
828
829 /*
830 * If mtclass.export_all_inputs is not set, only map fields from
831 * TouchScreen or TouchPad collections. We need to ignore fields
832 * that belong to other collections such as Mouse that might have
833 * the same GenericDesktop usages.
834 */
835 if (!td->mtclass.export_all_inputs &&
836 field->application != HID_DG_TOUCHSCREEN &&
837 field->application != HID_DG_PEN &&
838 field->application != HID_DG_TOUCHPAD)
839 return -1;
840
841 /*
842 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
843 * for the stylus.
844 * The check for mt_report_id ensures we don't process
845 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
846 * collection, but within the report ID.
847 */
848 if (field->physical == HID_DG_STYLUS)
849 return 0;
850 else if ((field->physical == 0) &&
851 (field->report->id != td->mt_report_id) &&
852 (td->mt_report_id != -1))
853 return 0;
854
855 if (field->application == HID_DG_TOUCHSCREEN ||
856 field->application == HID_DG_TOUCHPAD)
857 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
858
859 /* let hid-core decide for the others */
860 return 0;
861}
862
863static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
864 struct hid_field *field, struct hid_usage *usage,
865 unsigned long **bit, int *max)
866{
867 /*
868 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
869 * for the stylus.
870 */
871 if (field->physical == HID_DG_STYLUS)
872 return 0;
873
874 if (field->application == HID_DG_TOUCHSCREEN ||
875 field->application == HID_DG_TOUCHPAD)
876 return mt_touch_input_mapped(hdev, hi, field, usage, bit, max);
877
878 /* let hid-core decide for the others */
879 return 0;
880}
881
882static int mt_event(struct hid_device *hid, struct hid_field *field,
883 struct hid_usage *usage, __s32 value)
884{
885 struct mt_device *td = hid_get_drvdata(hid);
886
887 if (field->report->id == td->mt_report_id)
888 return mt_touch_event(hid, field, usage, value);
889
890 return 0;
891}
892
893static void mt_report(struct hid_device *hid, struct hid_report *report)
894{
895 struct mt_device *td = hid_get_drvdata(hid);
896 struct hid_field *field = report->field[0];
897
898 if (!(hid->claimed & HID_CLAIMED_INPUT))
899 return;
900
901 if (report->id == td->mt_report_id)
902 return mt_touch_report(hid, report);
903
904 if (field && field->hidinput && field->hidinput->input)
905 input_sync(field->hidinput->input);
906}
907
908static void mt_set_input_mode(struct hid_device *hdev)
909{
910 struct mt_device *td = hid_get_drvdata(hdev);
911 struct hid_report *r;
912 struct hid_report_enum *re;
913 struct mt_class *cls = &td->mtclass;
914 char *buf;
915 int report_len;
916
917 if (td->inputmode < 0)
918 return;
919
920 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
921 r = re->report_id_hash[td->inputmode];
922 if (r) {
923 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
924 report_len = hid_report_len(r);
925 buf = hid_alloc_report_buf(r, GFP_KERNEL);
926 if (!buf) {
927 hid_err(hdev, "failed to allocate buffer for report\n");
928 return;
929 }
930 hid_hw_raw_request(hdev, r->id, buf, report_len,
931 HID_FEATURE_REPORT,
932 HID_REQ_GET_REPORT);
933 kfree(buf);
934 }
935 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
936 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
937 }
938}
939
940static void mt_set_maxcontacts(struct hid_device *hdev)
941{
942 struct mt_device *td = hid_get_drvdata(hdev);
943 struct hid_report *r;
944 struct hid_report_enum *re;
945 int fieldmax, max;
946
947 if (td->maxcontact_report_id < 0)
948 return;
949
950 if (!td->mtclass.maxcontacts)
951 return;
952
953 re = &hdev->report_enum[HID_FEATURE_REPORT];
954 r = re->report_id_hash[td->maxcontact_report_id];
955 if (r) {
956 max = td->mtclass.maxcontacts;
957 fieldmax = r->field[0]->logical_maximum;
958 max = min(fieldmax, max);
959 if (r->field[0]->value[0] != max) {
960 r->field[0]->value[0] = max;
961 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
962 }
963 }
964}
965
966static void mt_post_parse_default_settings(struct mt_device *td)
967{
968 __s32 quirks = td->mtclass.quirks;
969
970 /* unknown serial device needs special quirks */
971 if (td->touches_by_report == 1) {
972 quirks |= MT_QUIRK_ALWAYS_VALID;
973 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
974 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
975 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
976 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
977 }
978
979 td->mtclass.quirks = quirks;
980}
981
982static void mt_post_parse(struct mt_device *td)
983{
984 struct mt_fields *f = td->fields;
985 struct mt_class *cls = &td->mtclass;
986
987 if (td->touches_by_report > 0) {
988 int field_count_per_touch = f->length / td->touches_by_report;
989 td->last_slot_field = f->usages[field_count_per_touch - 1];
990 }
991
992 if (td->cc_index < 0)
993 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
994}
995
996static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
997{
998 struct mt_device *td = hid_get_drvdata(hdev);
999 char *name;
1000 const char *suffix = NULL;
1001 struct hid_field *field = hi->report->field[0];
1002 int ret;
1003
1004 if (hi->report->id == td->mt_report_id) {
1005 ret = mt_touch_input_configured(hdev, hi);
1006 if (ret)
1007 return ret;
1008 }
1009
1010 /*
1011 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1012 * for the stylus. Check this first, and then rely on the application
1013 * field.
1014 */
1015 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
1016 suffix = "Pen";
1017 /* force BTN_STYLUS to allow tablet matching in udev */
1018 __set_bit(BTN_STYLUS, hi->input->keybit);
1019 } else {
1020 switch (field->application) {
1021 case HID_GD_KEYBOARD:
1022 suffix = "Keyboard";
1023 break;
1024 case HID_GD_KEYPAD:
1025 suffix = "Keypad";
1026 break;
1027 case HID_GD_MOUSE:
1028 suffix = "Mouse";
1029 break;
1030 case HID_DG_STYLUS:
1031 suffix = "Pen";
1032 /* force BTN_STYLUS to allow tablet matching in udev */
1033 __set_bit(BTN_STYLUS, hi->input->keybit);
1034 break;
1035 case HID_DG_TOUCHSCREEN:
1036 /* we do not set suffix = "Touchscreen" */
1037 break;
1038 case HID_DG_TOUCHPAD:
1039 suffix = "Touchpad";
1040 break;
1041 case HID_GD_SYSTEM_CONTROL:
1042 suffix = "System Control";
1043 break;
1044 case HID_CP_CONSUMER_CONTROL:
1045 suffix = "Consumer Control";
1046 break;
1047 default:
1048 suffix = "UNKNOWN";
1049 break;
1050 }
1051 }
1052
1053 if (suffix) {
1054 name = devm_kzalloc(&hi->input->dev,
1055 strlen(hdev->name) + strlen(suffix) + 2,
1056 GFP_KERNEL);
1057 if (name) {
1058 sprintf(name, "%s %s", hdev->name, suffix);
1059 hi->input->name = name;
1060 }
1061 }
1062
1063 return 0;
1064}
1065
1066static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1067{
1068 int ret, i;
1069 struct mt_device *td;
1070 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1071
1072 for (i = 0; mt_classes[i].name ; i++) {
1073 if (id->driver_data == mt_classes[i].name) {
1074 mtclass = &(mt_classes[i]);
1075 break;
1076 }
1077 }
1078
1079 /* This allows the driver to correctly support devices
1080 * that emit events over several HID messages.
1081 */
1082 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1083
1084 /*
1085 * This allows the driver to handle different input sensors
1086 * that emits events through different reports on the same HID
1087 * device.
1088 */
1089 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1090 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1091
1092 /*
1093 * Handle special quirks for Windows 8 certified devices.
1094 */
1095 if (id->group == HID_GROUP_MULTITOUCH_WIN_8)
1096 /*
1097 * Some multitouch screens do not like to be polled for input
1098 * reports. Fortunately, the Win8 spec says that all touches
1099 * should be sent during each report, making the initialization
1100 * of input reports unnecessary.
1101 *
1102 * In addition some touchpads do not behave well if we read
1103 * all feature reports from them. Instead we prevent
1104 * initial report fetching and then selectively fetch each
1105 * report we are interested in.
1106 */
1107 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1108
1109 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1110 if (!td) {
1111 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1112 return -ENOMEM;
1113 }
1114 td->mtclass = *mtclass;
1115 td->inputmode = -1;
1116 td->maxcontact_report_id = -1;
1117 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1118 td->cc_index = -1;
1119 td->mt_report_id = -1;
1120 hid_set_drvdata(hdev, td);
1121
1122 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1123 GFP_KERNEL);
1124 if (!td->fields) {
1125 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
1126 return -ENOMEM;
1127 }
1128
1129 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1130 td->serial_maybe = true;
1131
1132 ret = hid_parse(hdev);
1133 if (ret != 0)
1134 return ret;
1135
1136 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1137 if (ret)
1138 return ret;
1139
1140 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1141
1142 mt_set_maxcontacts(hdev);
1143 mt_set_input_mode(hdev);
1144
1145 /* release .fields memory as it is not used anymore */
1146 devm_kfree(&hdev->dev, td->fields);
1147 td->fields = NULL;
1148
1149 return 0;
1150}
1151
1152#ifdef CONFIG_PM
1153static int mt_reset_resume(struct hid_device *hdev)
1154{
1155 mt_set_maxcontacts(hdev);
1156 mt_set_input_mode(hdev);
1157 return 0;
1158}
1159
1160static int mt_resume(struct hid_device *hdev)
1161{
1162 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1163 * It should be safe to send it to other devices too.
1164 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1165
1166 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1167
1168 return 0;
1169}
1170#endif
1171
1172static void mt_remove(struct hid_device *hdev)
1173{
1174 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1175 hid_hw_stop(hdev);
1176}
1177
1178/*
1179 * This list contains only:
1180 * - VID/PID of products not working with the default multitouch handling
1181 * - 2 generic rules.
1182 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1183 */
1184static const struct hid_device_id mt_devices[] = {
1185
1186 /* 3M panels */
1187 { .driver_data = MT_CLS_3M,
1188 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1189 USB_DEVICE_ID_3M1968) },
1190 { .driver_data = MT_CLS_3M,
1191 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1192 USB_DEVICE_ID_3M2256) },
1193 { .driver_data = MT_CLS_3M,
1194 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1195 USB_DEVICE_ID_3M3266) },
1196
1197 /* Anton devices */
1198 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1199 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1200 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1201
1202 /* Atmel panels */
1203 { .driver_data = MT_CLS_SERIAL,
1204 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1205 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1206
1207 /* Baanto multitouch devices */
1208 { .driver_data = MT_CLS_NSMU,
1209 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1210 USB_DEVICE_ID_BAANTO_MT_190W2) },
1211
1212 /* Cando panels */
1213 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1214 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1215 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1216 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1217 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1218 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1219
1220 /* Chunghwa Telecom touch panels */
1221 { .driver_data = MT_CLS_NSMU,
1222 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1223 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1224
1225 /* CJTouch panels */
1226 { .driver_data = MT_CLS_NSMU,
1227 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1228 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1229 { .driver_data = MT_CLS_NSMU,
1230 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1231 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1232
1233 /* CVTouch panels */
1234 { .driver_data = MT_CLS_NSMU,
1235 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1236 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1237
1238 /* eGalax devices (resistive) */
1239 { .driver_data = MT_CLS_EGALAX,
1240 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1241 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1242 { .driver_data = MT_CLS_EGALAX,
1243 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1244 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1245
1246 /* eGalax devices (capacitive) */
1247 { .driver_data = MT_CLS_EGALAX_SERIAL,
1248 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1249 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1250 { .driver_data = MT_CLS_EGALAX,
1251 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1252 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1253 { .driver_data = MT_CLS_EGALAX_SERIAL,
1254 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1255 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1256 { .driver_data = MT_CLS_EGALAX_SERIAL,
1257 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1258 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1259 { .driver_data = MT_CLS_EGALAX_SERIAL,
1260 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1261 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1262 { .driver_data = MT_CLS_EGALAX_SERIAL,
1263 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1264 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1265 { .driver_data = MT_CLS_EGALAX,
1266 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1267 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1268 { .driver_data = MT_CLS_EGALAX,
1269 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1270 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1271 { .driver_data = MT_CLS_EGALAX_SERIAL,
1272 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1273 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1274 { .driver_data = MT_CLS_EGALAX,
1275 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1276 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1277 { .driver_data = MT_CLS_EGALAX,
1278 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1279 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1280 { .driver_data = MT_CLS_EGALAX,
1281 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1282 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1283 { .driver_data = MT_CLS_EGALAX,
1284 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1285 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1286 { .driver_data = MT_CLS_EGALAX_SERIAL,
1287 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1288 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1289 { .driver_data = MT_CLS_EGALAX_SERIAL,
1290 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1291 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1292 { .driver_data = MT_CLS_EGALAX_SERIAL,
1293 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1294 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1295
1296 /* Elitegroup panel */
1297 { .driver_data = MT_CLS_SERIAL,
1298 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1299 USB_DEVICE_ID_ELITEGROUP_05D8) },
1300
1301 /* Flatfrog Panels */
1302 { .driver_data = MT_CLS_FLATFROG,
1303 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1304 USB_DEVICE_ID_MULTITOUCH_3200) },
1305
1306 /* FocalTech Panels */
1307 { .driver_data = MT_CLS_SERIAL,
1308 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1309 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1310
1311 /* GeneralTouch panel */
1312 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1313 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1314 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1315 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1316 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1317 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1318 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1319 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1320 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1321 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1322 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1323 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1324 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1325 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1326 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1327 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1328 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1329 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1330 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1331 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1332 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1333
1334 /* Gametel game controller */
1335 { .driver_data = MT_CLS_NSMU,
1336 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1337 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1338
1339 /* GoodTouch panels */
1340 { .driver_data = MT_CLS_NSMU,
1341 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1342 USB_DEVICE_ID_GOODTOUCH_000f) },
1343
1344 /* Hanvon panels */
1345 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1346 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1347 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1348
1349 /* Ilitek dual touch panel */
1350 { .driver_data = MT_CLS_NSMU,
1351 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1352 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1353
1354 /* MosArt panels */
1355 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1356 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1357 USB_DEVICE_ID_ASUS_T91MT)},
1358 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1359 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1360 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1361 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1362 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1363 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1364
1365 /* Panasonic panels */
1366 { .driver_data = MT_CLS_PANASONIC,
1367 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1368 USB_DEVICE_ID_PANABOARD_UBT780) },
1369 { .driver_data = MT_CLS_PANASONIC,
1370 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1371 USB_DEVICE_ID_PANABOARD_UBT880) },
1372
1373 /* Novatek Panel */
1374 { .driver_data = MT_CLS_NSMU,
1375 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1376 USB_DEVICE_ID_NOVATEK_PCT) },
1377
1378 /* PixArt optical touch screen */
1379 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1380 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1381 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1382 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1383 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1384 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1385 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1386 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1387 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1388
1389 /* PixCir-based panels */
1390 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1391 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1392 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1393
1394 /* Quanta-based panels */
1395 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1396 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1397 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1398
1399 /* Stantum panels */
1400 { .driver_data = MT_CLS_CONFIDENCE,
1401 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1402 USB_DEVICE_ID_MTP_STM)},
1403
1404 /* TopSeed panels */
1405 { .driver_data = MT_CLS_TOPSEED,
1406 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1407 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1408
1409 /* Touch International panels */
1410 { .driver_data = MT_CLS_NSMU,
1411 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1412 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1413
1414 /* Unitec panels */
1415 { .driver_data = MT_CLS_NSMU,
1416 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1417 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1418 { .driver_data = MT_CLS_NSMU,
1419 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1420 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1421
1422 /* VTL panels */
1423 { .driver_data = MT_CLS_VTL,
1424 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1425 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1426
1427 /* Wistron panels */
1428 { .driver_data = MT_CLS_NSMU,
1429 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1430 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1431
1432 /* XAT */
1433 { .driver_data = MT_CLS_NSMU,
1434 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1435 USB_DEVICE_ID_XAT_CSR) },
1436
1437 /* Xiroku */
1438 { .driver_data = MT_CLS_NSMU,
1439 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1440 USB_DEVICE_ID_XIROKU_SPX) },
1441 { .driver_data = MT_CLS_NSMU,
1442 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1443 USB_DEVICE_ID_XIROKU_MPX) },
1444 { .driver_data = MT_CLS_NSMU,
1445 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1446 USB_DEVICE_ID_XIROKU_CSR) },
1447 { .driver_data = MT_CLS_NSMU,
1448 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1449 USB_DEVICE_ID_XIROKU_SPX1) },
1450 { .driver_data = MT_CLS_NSMU,
1451 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1452 USB_DEVICE_ID_XIROKU_MPX1) },
1453 { .driver_data = MT_CLS_NSMU,
1454 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1455 USB_DEVICE_ID_XIROKU_CSR1) },
1456 { .driver_data = MT_CLS_NSMU,
1457 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1458 USB_DEVICE_ID_XIROKU_SPX2) },
1459 { .driver_data = MT_CLS_NSMU,
1460 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1461 USB_DEVICE_ID_XIROKU_MPX2) },
1462 { .driver_data = MT_CLS_NSMU,
1463 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1464 USB_DEVICE_ID_XIROKU_CSR2) },
1465
1466 /* Generic MT device */
1467 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1468
1469 /* Generic Win 8 certified MT device */
1470 { .driver_data = MT_CLS_WIN_8,
1471 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1472 HID_ANY_ID, HID_ANY_ID) },
1473 { }
1474};
1475MODULE_DEVICE_TABLE(hid, mt_devices);
1476
1477static const struct hid_usage_id mt_grabbed_usages[] = {
1478 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1479 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1480};
1481
1482static struct hid_driver mt_driver = {
1483 .name = "hid-multitouch",
1484 .id_table = mt_devices,
1485 .probe = mt_probe,
1486 .remove = mt_remove,
1487 .input_mapping = mt_input_mapping,
1488 .input_mapped = mt_input_mapped,
1489 .input_configured = mt_input_configured,
1490 .feature_mapping = mt_feature_mapping,
1491 .usage_table = mt_grabbed_usages,
1492 .event = mt_event,
1493 .report = mt_report,
1494#ifdef CONFIG_PM
1495 .reset_resume = mt_reset_resume,
1496 .resume = mt_resume,
1497#endif
1498};
1499module_hid_driver(mt_driver);
Linux 6.x block layer and io_uring tree(s)