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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso...
[mirror_ubuntu-bionic-kernel.git] / drivers / hid / hid-multitouch.c
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
49 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
50 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
51 MODULE_DESCRIPTION("HID multitouch panels");
52 MODULE_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
76 struct 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
83 struct 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
95 struct mt_fields {
96 unsigned usages[HID_MAX_FIELDS];
97 unsigned int length;
98 };
99
100 struct 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
127 static void mt_post_parse_default_settings(struct mt_device *td);
128 static 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
170 static 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
178 static 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
271 static ssize_t mt_show_quirks(struct device *dev,
272 struct device_attribute *attr,
273 char *buf)
274 {
275 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
276 struct mt_device *td = hid_get_drvdata(hdev);
277
278 return sprintf(buf, "%u\n", td->mtclass.quirks);
279 }
280
281 static 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 = container_of(dev, struct 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
301 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
302
303 static struct attribute *sysfs_attrs[] = {
304 &dev_attr_quirks.attr,
305 NULL
306 };
307
308 static struct attribute_group mt_attribute_group = {
309 .attrs = sysfs_attrs
310 };
311
312 static void mt_feature_mapping(struct hid_device *hdev,
313 struct hid_field *field, struct hid_usage *usage)
314 {
315 struct mt_device *td = hid_get_drvdata(hdev);
316
317 switch (usage->hid) {
318 case HID_DG_INPUTMODE:
319 /* Ignore if value index is out of bounds. */
320 if (usage->usage_index >= field->report_count) {
321 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
322 break;
323 }
324
325 td->inputmode = field->report->id;
326 td->inputmode_index = usage->usage_index;
327
328 break;
329 case HID_DG_CONTACTMAX:
330 td->maxcontact_report_id = field->report->id;
331 td->maxcontacts = field->value[0];
332 if (!td->maxcontacts &&
333 field->logical_maximum <= MT_MAX_MAXCONTACT)
334 td->maxcontacts = field->logical_maximum;
335 if (td->mtclass.maxcontacts)
336 /* check if the maxcontacts is given by the class */
337 td->maxcontacts = td->mtclass.maxcontacts;
338
339 break;
340 case HID_DG_BUTTONTYPE:
341 if (usage->usage_index >= field->report_count) {
342 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
343 break;
344 }
345
346 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
347 td->is_buttonpad = true;
348
349 break;
350 }
351 }
352
353 static void set_abs(struct input_dev *input, unsigned int code,
354 struct hid_field *field, int snratio)
355 {
356 int fmin = field->logical_minimum;
357 int fmax = field->logical_maximum;
358 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
359 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
360 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
361 }
362
363 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
364 struct hid_input *hi)
365 {
366 struct mt_fields *f = td->fields;
367
368 if (f->length >= HID_MAX_FIELDS)
369 return;
370
371 f->usages[f->length++] = usage->hid;
372 }
373
374 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
375 struct hid_field *field, struct hid_usage *usage,
376 unsigned long **bit, int *max)
377 {
378 struct mt_device *td = hid_get_drvdata(hdev);
379 struct mt_class *cls = &td->mtclass;
380 int code;
381 struct hid_usage *prev_usage = NULL;
382
383 if (field->application == HID_DG_TOUCHSCREEN)
384 td->mt_flags |= INPUT_MT_DIRECT;
385
386 /*
387 * Model touchscreens providing buttons as touchpads.
388 */
389 if (field->application == HID_DG_TOUCHPAD ||
390 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
391 td->mt_flags |= INPUT_MT_POINTER;
392 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
393 }
394
395 /* count the buttons on touchpads */
396 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
397 td->buttons_count++;
398
399 if (usage->usage_index)
400 prev_usage = &field->usage[usage->usage_index - 1];
401
402 switch (usage->hid & HID_USAGE_PAGE) {
403
404 case HID_UP_GENDESK:
405 switch (usage->hid) {
406 case HID_GD_X:
407 if (prev_usage && (prev_usage->hid == usage->hid)) {
408 hid_map_usage(hi, usage, bit, max,
409 EV_ABS, ABS_MT_TOOL_X);
410 set_abs(hi->input, ABS_MT_TOOL_X, field,
411 cls->sn_move);
412 } else {
413 hid_map_usage(hi, usage, bit, max,
414 EV_ABS, ABS_MT_POSITION_X);
415 set_abs(hi->input, ABS_MT_POSITION_X, field,
416 cls->sn_move);
417 }
418
419 mt_store_field(usage, td, hi);
420 return 1;
421 case HID_GD_Y:
422 if (prev_usage && (prev_usage->hid == usage->hid)) {
423 hid_map_usage(hi, usage, bit, max,
424 EV_ABS, ABS_MT_TOOL_Y);
425 set_abs(hi->input, ABS_MT_TOOL_Y, field,
426 cls->sn_move);
427 } else {
428 hid_map_usage(hi, usage, bit, max,
429 EV_ABS, ABS_MT_POSITION_Y);
430 set_abs(hi->input, ABS_MT_POSITION_Y, field,
431 cls->sn_move);
432 }
433
434 mt_store_field(usage, td, hi);
435 return 1;
436 }
437 return 0;
438
439 case HID_UP_DIGITIZER:
440 switch (usage->hid) {
441 case HID_DG_INRANGE:
442 if (cls->quirks & MT_QUIRK_HOVERING) {
443 hid_map_usage(hi, usage, bit, max,
444 EV_ABS, ABS_MT_DISTANCE);
445 input_set_abs_params(hi->input,
446 ABS_MT_DISTANCE, 0, 1, 0, 0);
447 }
448 mt_store_field(usage, td, hi);
449 return 1;
450 case HID_DG_CONFIDENCE:
451 mt_store_field(usage, td, hi);
452 return 1;
453 case HID_DG_TIPSWITCH:
454 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
455 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
456 mt_store_field(usage, td, hi);
457 return 1;
458 case HID_DG_CONTACTID:
459 mt_store_field(usage, td, hi);
460 td->touches_by_report++;
461 td->mt_report_id = field->report->id;
462 return 1;
463 case HID_DG_WIDTH:
464 hid_map_usage(hi, usage, bit, max,
465 EV_ABS, ABS_MT_TOUCH_MAJOR);
466 if (!(cls->quirks & MT_QUIRK_NO_AREA))
467 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
468 cls->sn_width);
469 mt_store_field(usage, td, hi);
470 return 1;
471 case HID_DG_HEIGHT:
472 hid_map_usage(hi, usage, bit, max,
473 EV_ABS, ABS_MT_TOUCH_MINOR);
474 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
475 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
476 cls->sn_height);
477 input_set_abs_params(hi->input,
478 ABS_MT_ORIENTATION, 0, 1, 0, 0);
479 }
480 mt_store_field(usage, td, hi);
481 return 1;
482 case HID_DG_TIPPRESSURE:
483 hid_map_usage(hi, usage, bit, max,
484 EV_ABS, ABS_MT_PRESSURE);
485 set_abs(hi->input, ABS_MT_PRESSURE, field,
486 cls->sn_pressure);
487 mt_store_field(usage, td, hi);
488 return 1;
489 case HID_DG_CONTACTCOUNT:
490 /* Ignore if indexes are out of bounds. */
491 if (field->index >= field->report->maxfield ||
492 usage->usage_index >= field->report_count)
493 return 1;
494 td->cc_index = field->index;
495 td->cc_value_index = usage->usage_index;
496 return 1;
497 case HID_DG_CONTACTMAX:
498 /* we don't set td->last_slot_field as contactcount and
499 * contact max are global to the report */
500 return -1;
501 case HID_DG_TOUCH:
502 /* Legacy devices use TIPSWITCH and not TOUCH.
503 * Let's just ignore this field. */
504 return -1;
505 }
506 /* let hid-input decide for the others */
507 return 0;
508
509 case HID_UP_BUTTON:
510 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
511 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
512 input_set_capability(hi->input, EV_KEY, code);
513 return 1;
514
515 case 0xff000000:
516 /* we do not want to map these: no input-oriented meaning */
517 return -1;
518 }
519
520 return 0;
521 }
522
523 static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi,
524 struct hid_field *field, struct hid_usage *usage,
525 unsigned long **bit, int *max)
526 {
527 if (usage->type == EV_KEY || usage->type == EV_ABS)
528 set_bit(usage->type, hi->input->evbit);
529
530 return -1;
531 }
532
533 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
534 {
535 __s32 quirks = td->mtclass.quirks;
536
537 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
538 return td->curdata.contactid;
539
540 if (quirks & MT_QUIRK_CYPRESS)
541 return cypress_compute_slot(td);
542
543 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
544 return td->num_received;
545
546 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
547 return td->curdata.contactid - 1;
548
549 return input_mt_get_slot_by_key(input, td->curdata.contactid);
550 }
551
552 /*
553 * this function is called when a whole contact has been processed,
554 * so that it can assign it to a slot and store the data there
555 */
556 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
557 {
558 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
559 td->num_received >= td->num_expected)
560 return;
561
562 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
563 int slotnum = mt_compute_slot(td, input);
564 struct mt_slot *s = &td->curdata;
565 struct input_mt *mt = input->mt;
566
567 if (slotnum < 0 || slotnum >= td->maxcontacts)
568 return;
569
570 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
571 struct input_mt_slot *slot = &mt->slots[slotnum];
572 if (input_mt_is_active(slot) &&
573 input_mt_is_used(mt, slot))
574 return;
575 }
576
577 input_mt_slot(input, slotnum);
578 input_mt_report_slot_state(input, MT_TOOL_FINGER,
579 s->touch_state || s->inrange_state);
580 if (s->touch_state || s->inrange_state) {
581 /* this finger is in proximity of the sensor */
582 int wide = (s->w > s->h);
583 /* divided by two to match visual scale of touch */
584 int major = max(s->w, s->h) >> 1;
585 int minor = min(s->w, s->h) >> 1;
586
587 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
588 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
589 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
590 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
591 input_event(input, EV_ABS, ABS_MT_DISTANCE,
592 !s->touch_state);
593 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
594 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
595 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
596 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
597 }
598 }
599
600 td->num_received++;
601 }
602
603 /*
604 * this function is called when a whole packet has been received and processed,
605 * so that it can decide what to send to the input layer.
606 */
607 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
608 {
609 input_mt_sync_frame(input);
610 input_sync(input);
611 td->num_received = 0;
612 }
613
614 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
615 struct hid_usage *usage, __s32 value)
616 {
617 /* we will handle the hidinput part later, now remains hiddev */
618 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
619 hid->hiddev_hid_event(hid, field, usage, value);
620
621 return 1;
622 }
623
624 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
625 struct hid_usage *usage, __s32 value)
626 {
627 struct mt_device *td = hid_get_drvdata(hid);
628 __s32 quirks = td->mtclass.quirks;
629 struct input_dev *input = field->hidinput->input;
630
631 if (hid->claimed & HID_CLAIMED_INPUT) {
632 switch (usage->hid) {
633 case HID_DG_INRANGE:
634 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
635 td->curvalid = value;
636 if (quirks & MT_QUIRK_HOVERING)
637 td->curdata.inrange_state = value;
638 break;
639 case HID_DG_TIPSWITCH:
640 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
641 td->curvalid = value;
642 td->curdata.touch_state = value;
643 break;
644 case HID_DG_CONFIDENCE:
645 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
646 td->curvalid = value;
647 break;
648 case HID_DG_CONTACTID:
649 td->curdata.contactid = value;
650 break;
651 case HID_DG_TIPPRESSURE:
652 td->curdata.p = value;
653 break;
654 case HID_GD_X:
655 if (usage->code == ABS_MT_TOOL_X)
656 td->curdata.cx = value;
657 else
658 td->curdata.x = value;
659 break;
660 case HID_GD_Y:
661 if (usage->code == ABS_MT_TOOL_Y)
662 td->curdata.cy = value;
663 else
664 td->curdata.y = value;
665 break;
666 case HID_DG_WIDTH:
667 td->curdata.w = value;
668 break;
669 case HID_DG_HEIGHT:
670 td->curdata.h = value;
671 break;
672 case HID_DG_CONTACTCOUNT:
673 break;
674 case HID_DG_TOUCH:
675 /* do nothing */
676 break;
677
678 default:
679 if (usage->type)
680 input_event(input, usage->type, usage->code,
681 value);
682 return;
683 }
684
685 if (usage->usage_index + 1 == field->report_count) {
686 /* we only take into account the last report. */
687 if (usage->hid == td->last_slot_field)
688 mt_complete_slot(td, field->hidinput->input);
689 }
690
691 }
692 }
693
694 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
695 {
696 struct mt_device *td = hid_get_drvdata(hid);
697 struct hid_field *field;
698 unsigned count;
699 int r, n;
700
701 /*
702 * Includes multi-packet support where subsequent
703 * packets are sent with zero contactcount.
704 */
705 if (td->cc_index >= 0) {
706 struct hid_field *field = report->field[td->cc_index];
707 int value = field->value[td->cc_value_index];
708 if (value)
709 td->num_expected = value;
710 }
711
712 for (r = 0; r < report->maxfield; r++) {
713 field = report->field[r];
714 count = field->report_count;
715
716 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
717 continue;
718
719 for (n = 0; n < count; n++)
720 mt_process_mt_event(hid, field, &field->usage[n],
721 field->value[n]);
722 }
723
724 if (td->num_received >= td->num_expected)
725 mt_sync_frame(td, report->field[0]->hidinput->input);
726 }
727
728 static int mt_touch_input_configured(struct hid_device *hdev,
729 struct hid_input *hi)
730 {
731 struct mt_device *td = hid_get_drvdata(hdev);
732 struct mt_class *cls = &td->mtclass;
733 struct input_dev *input = hi->input;
734 int ret;
735
736 if (!td->maxcontacts)
737 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
738
739 mt_post_parse(td);
740 if (td->serial_maybe)
741 mt_post_parse_default_settings(td);
742
743 if (cls->is_indirect)
744 td->mt_flags |= INPUT_MT_POINTER;
745
746 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
747 td->mt_flags |= INPUT_MT_DROP_UNUSED;
748
749 /* check for clickpads */
750 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
751 td->is_buttonpad = true;
752
753 if (td->is_buttonpad)
754 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
755
756 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
757 if (ret)
758 return ret;
759
760 td->mt_flags = 0;
761 return 0;
762 }
763
764 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
765 struct hid_field *field, struct hid_usage *usage,
766 unsigned long **bit, int *max)
767 {
768 struct mt_device *td = hid_get_drvdata(hdev);
769
770 /*
771 * If mtclass.export_all_inputs is not set, only map fields from
772 * TouchScreen or TouchPad collections. We need to ignore fields
773 * that belong to other collections such as Mouse that might have
774 * the same GenericDesktop usages.
775 */
776 if (!td->mtclass.export_all_inputs &&
777 field->application != HID_DG_TOUCHSCREEN &&
778 field->application != HID_DG_PEN &&
779 field->application != HID_DG_TOUCHPAD)
780 return -1;
781
782 /*
783 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
784 * for the stylus.
785 * The check for mt_report_id ensures we don't process
786 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
787 * collection, but within the report ID.
788 */
789 if (field->physical == HID_DG_STYLUS)
790 return 0;
791 else if ((field->physical == 0) &&
792 (field->report->id != td->mt_report_id) &&
793 (td->mt_report_id != -1))
794 return 0;
795
796 if (field->application == HID_DG_TOUCHSCREEN ||
797 field->application == HID_DG_TOUCHPAD)
798 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
799
800 /* let hid-core decide for the others */
801 return 0;
802 }
803
804 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
805 struct hid_field *field, struct hid_usage *usage,
806 unsigned long **bit, int *max)
807 {
808 /*
809 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
810 * for the stylus.
811 */
812 if (field->physical == HID_DG_STYLUS)
813 return 0;
814
815 if (field->application == HID_DG_TOUCHSCREEN ||
816 field->application == HID_DG_TOUCHPAD)
817 return mt_touch_input_mapped(hdev, hi, field, usage, bit, max);
818
819 /* let hid-core decide for the others */
820 return 0;
821 }
822
823 static int mt_event(struct hid_device *hid, struct hid_field *field,
824 struct hid_usage *usage, __s32 value)
825 {
826 struct mt_device *td = hid_get_drvdata(hid);
827
828 if (field->report->id == td->mt_report_id)
829 return mt_touch_event(hid, field, usage, value);
830
831 return 0;
832 }
833
834 static void mt_report(struct hid_device *hid, struct hid_report *report)
835 {
836 struct mt_device *td = hid_get_drvdata(hid);
837 struct hid_field *field = report->field[0];
838
839 if (!(hid->claimed & HID_CLAIMED_INPUT))
840 return;
841
842 if (report->id == td->mt_report_id)
843 return mt_touch_report(hid, report);
844
845 if (field && field->hidinput && field->hidinput->input)
846 input_sync(field->hidinput->input);
847 }
848
849 static void mt_set_input_mode(struct hid_device *hdev)
850 {
851 struct mt_device *td = hid_get_drvdata(hdev);
852 struct hid_report *r;
853 struct hid_report_enum *re;
854 struct mt_class *cls = &td->mtclass;
855 char *buf;
856 int report_len;
857
858 if (td->inputmode < 0)
859 return;
860
861 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
862 r = re->report_id_hash[td->inputmode];
863 if (r) {
864 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
865 report_len = hid_report_len(r);
866 buf = hid_alloc_report_buf(r, GFP_KERNEL);
867 if (!buf) {
868 hid_err(hdev, "failed to allocate buffer for report\n");
869 return;
870 }
871 hid_hw_raw_request(hdev, r->id, buf, report_len,
872 HID_FEATURE_REPORT,
873 HID_REQ_GET_REPORT);
874 kfree(buf);
875 }
876 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
877 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
878 }
879 }
880
881 static void mt_set_maxcontacts(struct hid_device *hdev)
882 {
883 struct mt_device *td = hid_get_drvdata(hdev);
884 struct hid_report *r;
885 struct hid_report_enum *re;
886 int fieldmax, max;
887
888 if (td->maxcontact_report_id < 0)
889 return;
890
891 if (!td->mtclass.maxcontacts)
892 return;
893
894 re = &hdev->report_enum[HID_FEATURE_REPORT];
895 r = re->report_id_hash[td->maxcontact_report_id];
896 if (r) {
897 max = td->mtclass.maxcontacts;
898 fieldmax = r->field[0]->logical_maximum;
899 max = min(fieldmax, max);
900 if (r->field[0]->value[0] != max) {
901 r->field[0]->value[0] = max;
902 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
903 }
904 }
905 }
906
907 static void mt_post_parse_default_settings(struct mt_device *td)
908 {
909 __s32 quirks = td->mtclass.quirks;
910
911 /* unknown serial device needs special quirks */
912 if (td->touches_by_report == 1) {
913 quirks |= MT_QUIRK_ALWAYS_VALID;
914 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
915 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
916 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
917 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
918 }
919
920 td->mtclass.quirks = quirks;
921 }
922
923 static void mt_post_parse(struct mt_device *td)
924 {
925 struct mt_fields *f = td->fields;
926 struct mt_class *cls = &td->mtclass;
927
928 if (td->touches_by_report > 0) {
929 int field_count_per_touch = f->length / td->touches_by_report;
930 td->last_slot_field = f->usages[field_count_per_touch - 1];
931 }
932
933 if (td->cc_index < 0)
934 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
935 }
936
937 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
938 {
939 struct mt_device *td = hid_get_drvdata(hdev);
940 char *name;
941 const char *suffix = NULL;
942 struct hid_field *field = hi->report->field[0];
943 int ret;
944
945 if (hi->report->id == td->mt_report_id) {
946 ret = mt_touch_input_configured(hdev, hi);
947 if (ret)
948 return ret;
949 }
950
951 /*
952 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
953 * for the stylus. Check this first, and then rely on the application
954 * field.
955 */
956 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
957 suffix = "Pen";
958 /* force BTN_STYLUS to allow tablet matching in udev */
959 __set_bit(BTN_STYLUS, hi->input->keybit);
960 } else {
961 switch (field->application) {
962 case HID_GD_KEYBOARD:
963 suffix = "Keyboard";
964 break;
965 case HID_GD_KEYPAD:
966 suffix = "Keypad";
967 break;
968 case HID_GD_MOUSE:
969 suffix = "Mouse";
970 break;
971 case HID_DG_STYLUS:
972 suffix = "Pen";
973 /* force BTN_STYLUS to allow tablet matching in udev */
974 __set_bit(BTN_STYLUS, hi->input->keybit);
975 break;
976 case HID_DG_TOUCHSCREEN:
977 /* we do not set suffix = "Touchscreen" */
978 break;
979 case HID_GD_SYSTEM_CONTROL:
980 suffix = "System Control";
981 break;
982 case HID_CP_CONSUMER_CONTROL:
983 suffix = "Consumer Control";
984 break;
985 default:
986 suffix = "UNKNOWN";
987 break;
988 }
989 }
990
991 if (suffix) {
992 name = devm_kzalloc(&hi->input->dev,
993 strlen(hdev->name) + strlen(suffix) + 2,
994 GFP_KERNEL);
995 if (name) {
996 sprintf(name, "%s %s", hdev->name, suffix);
997 hi->input->name = name;
998 }
999 }
1000
1001 return 0;
1002 }
1003
1004 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1005 {
1006 int ret, i;
1007 struct mt_device *td;
1008 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1009
1010 for (i = 0; mt_classes[i].name ; i++) {
1011 if (id->driver_data == mt_classes[i].name) {
1012 mtclass = &(mt_classes[i]);
1013 break;
1014 }
1015 }
1016
1017 /* This allows the driver to correctly support devices
1018 * that emit events over several HID messages.
1019 */
1020 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1021
1022 /*
1023 * This allows the driver to handle different input sensors
1024 * that emits events through different reports on the same HID
1025 * device.
1026 */
1027 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1028 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1029
1030 /*
1031 * Handle special quirks for Windows 8 certified devices.
1032 */
1033 if (id->group == HID_GROUP_MULTITOUCH_WIN_8)
1034 /*
1035 * Some multitouch screens do not like to be polled for input
1036 * reports. Fortunately, the Win8 spec says that all touches
1037 * should be sent during each report, making the initialization
1038 * of input reports unnecessary.
1039 */
1040 hdev->quirks |= HID_QUIRK_NO_INIT_INPUT_REPORTS;
1041
1042 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1043 if (!td) {
1044 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1045 return -ENOMEM;
1046 }
1047 td->mtclass = *mtclass;
1048 td->inputmode = -1;
1049 td->maxcontact_report_id = -1;
1050 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1051 td->cc_index = -1;
1052 td->mt_report_id = -1;
1053 hid_set_drvdata(hdev, td);
1054
1055 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1056 GFP_KERNEL);
1057 if (!td->fields) {
1058 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
1059 return -ENOMEM;
1060 }
1061
1062 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1063 td->serial_maybe = true;
1064
1065 ret = hid_parse(hdev);
1066 if (ret != 0)
1067 return ret;
1068
1069 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1070 if (ret)
1071 return ret;
1072
1073 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1074
1075 mt_set_maxcontacts(hdev);
1076 mt_set_input_mode(hdev);
1077
1078 /* release .fields memory as it is not used anymore */
1079 devm_kfree(&hdev->dev, td->fields);
1080 td->fields = NULL;
1081
1082 return 0;
1083 }
1084
1085 #ifdef CONFIG_PM
1086 static int mt_reset_resume(struct hid_device *hdev)
1087 {
1088 mt_set_maxcontacts(hdev);
1089 mt_set_input_mode(hdev);
1090 return 0;
1091 }
1092
1093 static int mt_resume(struct hid_device *hdev)
1094 {
1095 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1096 * It should be safe to send it to other devices too.
1097 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1098
1099 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1100
1101 return 0;
1102 }
1103 #endif
1104
1105 static void mt_remove(struct hid_device *hdev)
1106 {
1107 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1108 hid_hw_stop(hdev);
1109 }
1110
1111 /*
1112 * This list contains only:
1113 * - VID/PID of products not working with the default multitouch handling
1114 * - 2 generic rules.
1115 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1116 */
1117 static const struct hid_device_id mt_devices[] = {
1118
1119 /* 3M panels */
1120 { .driver_data = MT_CLS_3M,
1121 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1122 USB_DEVICE_ID_3M1968) },
1123 { .driver_data = MT_CLS_3M,
1124 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1125 USB_DEVICE_ID_3M2256) },
1126 { .driver_data = MT_CLS_3M,
1127 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1128 USB_DEVICE_ID_3M3266) },
1129
1130 /* Anton devices */
1131 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1132 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1133 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1134
1135 /* Atmel panels */
1136 { .driver_data = MT_CLS_SERIAL,
1137 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1138 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1139
1140 /* Baanto multitouch devices */
1141 { .driver_data = MT_CLS_NSMU,
1142 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1143 USB_DEVICE_ID_BAANTO_MT_190W2) },
1144
1145 /* Cando panels */
1146 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1147 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1148 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1149 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1150 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1151 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1152
1153 /* Chunghwa Telecom touch panels */
1154 { .driver_data = MT_CLS_NSMU,
1155 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1156 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1157
1158 /* CJTouch panels */
1159 { .driver_data = MT_CLS_NSMU,
1160 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1161 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1162 { .driver_data = MT_CLS_NSMU,
1163 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1164 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1165
1166 /* CVTouch panels */
1167 { .driver_data = MT_CLS_NSMU,
1168 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1169 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1170
1171 /* eGalax devices (resistive) */
1172 { .driver_data = MT_CLS_EGALAX,
1173 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1174 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1175 { .driver_data = MT_CLS_EGALAX,
1176 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1177 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1178
1179 /* eGalax devices (capacitive) */
1180 { .driver_data = MT_CLS_EGALAX_SERIAL,
1181 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1182 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1183 { .driver_data = MT_CLS_EGALAX,
1184 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1185 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1186 { .driver_data = MT_CLS_EGALAX_SERIAL,
1187 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1188 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1189 { .driver_data = MT_CLS_EGALAX_SERIAL,
1190 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1191 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1192 { .driver_data = MT_CLS_EGALAX_SERIAL,
1193 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1194 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1195 { .driver_data = MT_CLS_EGALAX_SERIAL,
1196 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1197 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1198 { .driver_data = MT_CLS_EGALAX,
1199 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1200 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1201 { .driver_data = MT_CLS_EGALAX,
1202 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1203 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1204 { .driver_data = MT_CLS_EGALAX_SERIAL,
1205 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1206 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1207 { .driver_data = MT_CLS_EGALAX,
1208 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1209 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1210 { .driver_data = MT_CLS_EGALAX,
1211 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1212 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1213 { .driver_data = MT_CLS_EGALAX,
1214 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1215 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1216 { .driver_data = MT_CLS_EGALAX,
1217 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1218 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1219 { .driver_data = MT_CLS_EGALAX_SERIAL,
1220 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1221 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1222 { .driver_data = MT_CLS_EGALAX_SERIAL,
1223 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1224 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1225 { .driver_data = MT_CLS_EGALAX_SERIAL,
1226 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1227 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1228
1229 /* Elitegroup panel */
1230 { .driver_data = MT_CLS_SERIAL,
1231 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1232 USB_DEVICE_ID_ELITEGROUP_05D8) },
1233
1234 /* Flatfrog Panels */
1235 { .driver_data = MT_CLS_FLATFROG,
1236 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1237 USB_DEVICE_ID_MULTITOUCH_3200) },
1238
1239 /* FocalTech Panels */
1240 { .driver_data = MT_CLS_SERIAL,
1241 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1242 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1243
1244 /* GeneralTouch panel */
1245 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1246 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1247 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1248 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1249 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1250 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1251 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1252 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1253 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1254 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1255 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1256 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1257 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1258 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1259 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1260 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1261 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1262 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1263 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1264 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1265 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1266
1267 /* Gametel game controller */
1268 { .driver_data = MT_CLS_NSMU,
1269 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1270 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1271
1272 /* GoodTouch panels */
1273 { .driver_data = MT_CLS_NSMU,
1274 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1275 USB_DEVICE_ID_GOODTOUCH_000f) },
1276
1277 /* Hanvon panels */
1278 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1279 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1280 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1281
1282 /* Ilitek dual touch panel */
1283 { .driver_data = MT_CLS_NSMU,
1284 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1285 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1286
1287 /* MosArt panels */
1288 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1289 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1290 USB_DEVICE_ID_ASUS_T91MT)},
1291 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1292 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1293 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1294 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1295 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1296 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1297
1298 /* Panasonic panels */
1299 { .driver_data = MT_CLS_PANASONIC,
1300 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1301 USB_DEVICE_ID_PANABOARD_UBT780) },
1302 { .driver_data = MT_CLS_PANASONIC,
1303 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1304 USB_DEVICE_ID_PANABOARD_UBT880) },
1305
1306 /* Novatek Panel */
1307 { .driver_data = MT_CLS_NSMU,
1308 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1309 USB_DEVICE_ID_NOVATEK_PCT) },
1310
1311 /* PixArt optical touch screen */
1312 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1313 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1314 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1315 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1316 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1317 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1318 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1319 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1320 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1321
1322 /* PixCir-based panels */
1323 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1324 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1325 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1326
1327 /* Quanta-based panels */
1328 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1329 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1330 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1331
1332 /* Stantum panels */
1333 { .driver_data = MT_CLS_CONFIDENCE,
1334 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1335 USB_DEVICE_ID_MTP_STM)},
1336
1337 /* TopSeed panels */
1338 { .driver_data = MT_CLS_TOPSEED,
1339 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1340 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1341
1342 /* Touch International panels */
1343 { .driver_data = MT_CLS_NSMU,
1344 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1345 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1346
1347 /* Unitec panels */
1348 { .driver_data = MT_CLS_NSMU,
1349 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1350 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1351 { .driver_data = MT_CLS_NSMU,
1352 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1353 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1354
1355 /* VTL panels */
1356 { .driver_data = MT_CLS_VTL,
1357 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1358 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1359
1360 /* Wistron panels */
1361 { .driver_data = MT_CLS_NSMU,
1362 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1363 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1364
1365 /* XAT */
1366 { .driver_data = MT_CLS_NSMU,
1367 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1368 USB_DEVICE_ID_XAT_CSR) },
1369
1370 /* Xiroku */
1371 { .driver_data = MT_CLS_NSMU,
1372 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1373 USB_DEVICE_ID_XIROKU_SPX) },
1374 { .driver_data = MT_CLS_NSMU,
1375 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1376 USB_DEVICE_ID_XIROKU_MPX) },
1377 { .driver_data = MT_CLS_NSMU,
1378 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1379 USB_DEVICE_ID_XIROKU_CSR) },
1380 { .driver_data = MT_CLS_NSMU,
1381 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1382 USB_DEVICE_ID_XIROKU_SPX1) },
1383 { .driver_data = MT_CLS_NSMU,
1384 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1385 USB_DEVICE_ID_XIROKU_MPX1) },
1386 { .driver_data = MT_CLS_NSMU,
1387 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1388 USB_DEVICE_ID_XIROKU_CSR1) },
1389 { .driver_data = MT_CLS_NSMU,
1390 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1391 USB_DEVICE_ID_XIROKU_SPX2) },
1392 { .driver_data = MT_CLS_NSMU,
1393 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1394 USB_DEVICE_ID_XIROKU_MPX2) },
1395 { .driver_data = MT_CLS_NSMU,
1396 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1397 USB_DEVICE_ID_XIROKU_CSR2) },
1398
1399 /* Generic MT device */
1400 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1401
1402 /* Generic Win 8 certified MT device */
1403 { .driver_data = MT_CLS_WIN_8,
1404 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1405 HID_ANY_ID, HID_ANY_ID) },
1406 { }
1407 };
1408 MODULE_DEVICE_TABLE(hid, mt_devices);
1409
1410 static const struct hid_usage_id mt_grabbed_usages[] = {
1411 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1412 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1413 };
1414
1415 static struct hid_driver mt_driver = {
1416 .name = "hid-multitouch",
1417 .id_table = mt_devices,
1418 .probe = mt_probe,
1419 .remove = mt_remove,
1420 .input_mapping = mt_input_mapping,
1421 .input_mapped = mt_input_mapped,
1422 .input_configured = mt_input_configured,
1423 .feature_mapping = mt_feature_mapping,
1424 .usage_table = mt_grabbed_usages,
1425 .event = mt_event,
1426 .report = mt_report,
1427 #ifdef CONFIG_PM
1428 .reset_resume = mt_reset_resume,
1429 .resume = mt_resume,
1430 #endif
1431 };
1432 module_hid_driver(mt_driver);
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