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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[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_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
347 static 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 td->inputmode = field->report->id;
361 td->inputmode_index = usage->usage_index;
362
363 break;
364 case HID_DG_CONTACTMAX:
365 mt_get_feature(hdev, field->report);
366
367 td->maxcontact_report_id = field->report->id;
368 td->maxcontacts = field->value[0];
369 if (!td->maxcontacts &&
370 field->logical_maximum <= MT_MAX_MAXCONTACT)
371 td->maxcontacts = field->logical_maximum;
372 if (td->mtclass.maxcontacts)
373 /* check if the maxcontacts is given by the class */
374 td->maxcontacts = td->mtclass.maxcontacts;
375
376 break;
377 case HID_DG_BUTTONTYPE:
378 if (usage->usage_index >= field->report_count) {
379 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
380 break;
381 }
382
383 mt_get_feature(hdev, field->report);
384 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
385 td->is_buttonpad = true;
386
387 break;
388 }
389 }
390
391 static void set_abs(struct input_dev *input, unsigned int code,
392 struct hid_field *field, int snratio)
393 {
394 int fmin = field->logical_minimum;
395 int fmax = field->logical_maximum;
396 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
397 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
398 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
399 }
400
401 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
402 struct hid_input *hi)
403 {
404 struct mt_fields *f = td->fields;
405
406 if (f->length >= HID_MAX_FIELDS)
407 return;
408
409 f->usages[f->length++] = usage->hid;
410 }
411
412 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
413 struct hid_field *field, struct hid_usage *usage,
414 unsigned long **bit, int *max)
415 {
416 struct mt_device *td = hid_get_drvdata(hdev);
417 struct mt_class *cls = &td->mtclass;
418 int code;
419 struct hid_usage *prev_usage = NULL;
420
421 if (field->application == HID_DG_TOUCHSCREEN)
422 td->mt_flags |= INPUT_MT_DIRECT;
423
424 /*
425 * Model touchscreens providing buttons as touchpads.
426 */
427 if (field->application == HID_DG_TOUCHPAD ||
428 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
429 td->mt_flags |= INPUT_MT_POINTER;
430 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
431 }
432
433 /* count the buttons on touchpads */
434 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
435 td->buttons_count++;
436
437 if (usage->usage_index)
438 prev_usage = &field->usage[usage->usage_index - 1];
439
440 switch (usage->hid & HID_USAGE_PAGE) {
441
442 case HID_UP_GENDESK:
443 switch (usage->hid) {
444 case HID_GD_X:
445 if (prev_usage && (prev_usage->hid == usage->hid)) {
446 hid_map_usage(hi, usage, bit, max,
447 EV_ABS, ABS_MT_TOOL_X);
448 set_abs(hi->input, ABS_MT_TOOL_X, field,
449 cls->sn_move);
450 } else {
451 hid_map_usage(hi, usage, bit, max,
452 EV_ABS, ABS_MT_POSITION_X);
453 set_abs(hi->input, ABS_MT_POSITION_X, field,
454 cls->sn_move);
455 }
456
457 mt_store_field(usage, td, hi);
458 return 1;
459 case HID_GD_Y:
460 if (prev_usage && (prev_usage->hid == usage->hid)) {
461 hid_map_usage(hi, usage, bit, max,
462 EV_ABS, ABS_MT_TOOL_Y);
463 set_abs(hi->input, ABS_MT_TOOL_Y, field,
464 cls->sn_move);
465 } else {
466 hid_map_usage(hi, usage, bit, max,
467 EV_ABS, ABS_MT_POSITION_Y);
468 set_abs(hi->input, ABS_MT_POSITION_Y, field,
469 cls->sn_move);
470 }
471
472 mt_store_field(usage, td, hi);
473 return 1;
474 }
475 return 0;
476
477 case HID_UP_DIGITIZER:
478 switch (usage->hid) {
479 case HID_DG_INRANGE:
480 if (cls->quirks & MT_QUIRK_HOVERING) {
481 hid_map_usage(hi, usage, bit, max,
482 EV_ABS, ABS_MT_DISTANCE);
483 input_set_abs_params(hi->input,
484 ABS_MT_DISTANCE, 0, 1, 0, 0);
485 }
486 mt_store_field(usage, td, hi);
487 return 1;
488 case HID_DG_CONFIDENCE:
489 mt_store_field(usage, td, hi);
490 return 1;
491 case HID_DG_TIPSWITCH:
492 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
493 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
494 mt_store_field(usage, td, hi);
495 return 1;
496 case HID_DG_CONTACTID:
497 mt_store_field(usage, td, hi);
498 td->touches_by_report++;
499 td->mt_report_id = field->report->id;
500 return 1;
501 case HID_DG_WIDTH:
502 hid_map_usage(hi, usage, bit, max,
503 EV_ABS, ABS_MT_TOUCH_MAJOR);
504 if (!(cls->quirks & MT_QUIRK_NO_AREA))
505 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
506 cls->sn_width);
507 mt_store_field(usage, td, hi);
508 return 1;
509 case HID_DG_HEIGHT:
510 hid_map_usage(hi, usage, bit, max,
511 EV_ABS, ABS_MT_TOUCH_MINOR);
512 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
513 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
514 cls->sn_height);
515 input_set_abs_params(hi->input,
516 ABS_MT_ORIENTATION, 0, 1, 0, 0);
517 }
518 mt_store_field(usage, td, hi);
519 return 1;
520 case HID_DG_TIPPRESSURE:
521 hid_map_usage(hi, usage, bit, max,
522 EV_ABS, ABS_MT_PRESSURE);
523 set_abs(hi->input, ABS_MT_PRESSURE, field,
524 cls->sn_pressure);
525 mt_store_field(usage, td, hi);
526 return 1;
527 case HID_DG_CONTACTCOUNT:
528 /* Ignore if indexes are out of bounds. */
529 if (field->index >= field->report->maxfield ||
530 usage->usage_index >= field->report_count)
531 return 1;
532 td->cc_index = field->index;
533 td->cc_value_index = usage->usage_index;
534 return 1;
535 case HID_DG_CONTACTMAX:
536 /* we don't set td->last_slot_field as contactcount and
537 * contact max are global to the report */
538 return -1;
539 case HID_DG_TOUCH:
540 /* Legacy devices use TIPSWITCH and not TOUCH.
541 * Let's just ignore this field. */
542 return -1;
543 }
544 /* let hid-input decide for the others */
545 return 0;
546
547 case HID_UP_BUTTON:
548 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
549 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
550 input_set_capability(hi->input, EV_KEY, code);
551 return 1;
552
553 case 0xff000000:
554 /* we do not want to map these: no input-oriented meaning */
555 return -1;
556 }
557
558 return 0;
559 }
560
561 static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi,
562 struct hid_field *field, struct hid_usage *usage,
563 unsigned long **bit, int *max)
564 {
565 if (usage->type == EV_KEY || usage->type == EV_ABS)
566 set_bit(usage->type, hi->input->evbit);
567
568 return -1;
569 }
570
571 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
572 {
573 __s32 quirks = td->mtclass.quirks;
574
575 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
576 return td->curdata.contactid;
577
578 if (quirks & MT_QUIRK_CYPRESS)
579 return cypress_compute_slot(td);
580
581 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
582 return td->num_received;
583
584 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
585 return td->curdata.contactid - 1;
586
587 return input_mt_get_slot_by_key(input, td->curdata.contactid);
588 }
589
590 /*
591 * this function is called when a whole contact has been processed,
592 * so that it can assign it to a slot and store the data there
593 */
594 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
595 {
596 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
597 td->num_received >= td->num_expected)
598 return;
599
600 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
601 int slotnum = mt_compute_slot(td, input);
602 struct mt_slot *s = &td->curdata;
603 struct input_mt *mt = input->mt;
604
605 if (slotnum < 0 || slotnum >= td->maxcontacts)
606 return;
607
608 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
609 struct input_mt_slot *slot = &mt->slots[slotnum];
610 if (input_mt_is_active(slot) &&
611 input_mt_is_used(mt, slot))
612 return;
613 }
614
615 input_mt_slot(input, slotnum);
616 input_mt_report_slot_state(input, MT_TOOL_FINGER,
617 s->touch_state || s->inrange_state);
618 if (s->touch_state || s->inrange_state) {
619 /* this finger is in proximity of the sensor */
620 int wide = (s->w > s->h);
621 /* divided by two to match visual scale of touch */
622 int major = max(s->w, s->h) >> 1;
623 int minor = min(s->w, s->h) >> 1;
624
625 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
626 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
627 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
628 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
629 input_event(input, EV_ABS, ABS_MT_DISTANCE,
630 !s->touch_state);
631 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
632 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
633 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
634 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
635 }
636 }
637
638 td->num_received++;
639 }
640
641 /*
642 * this function is called when a whole packet has been received and processed,
643 * so that it can decide what to send to the input layer.
644 */
645 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
646 {
647 input_mt_sync_frame(input);
648 input_sync(input);
649 td->num_received = 0;
650 }
651
652 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
653 struct hid_usage *usage, __s32 value)
654 {
655 /* we will handle the hidinput part later, now remains hiddev */
656 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
657 hid->hiddev_hid_event(hid, field, usage, value);
658
659 return 1;
660 }
661
662 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
663 struct hid_usage *usage, __s32 value)
664 {
665 struct mt_device *td = hid_get_drvdata(hid);
666 __s32 quirks = td->mtclass.quirks;
667 struct input_dev *input = field->hidinput->input;
668
669 if (hid->claimed & HID_CLAIMED_INPUT) {
670 switch (usage->hid) {
671 case HID_DG_INRANGE:
672 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
673 td->curvalid = value;
674 if (quirks & MT_QUIRK_HOVERING)
675 td->curdata.inrange_state = value;
676 break;
677 case HID_DG_TIPSWITCH:
678 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
679 td->curvalid = value;
680 td->curdata.touch_state = value;
681 break;
682 case HID_DG_CONFIDENCE:
683 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
684 td->curvalid = value;
685 break;
686 case HID_DG_CONTACTID:
687 td->curdata.contactid = value;
688 break;
689 case HID_DG_TIPPRESSURE:
690 td->curdata.p = value;
691 break;
692 case HID_GD_X:
693 if (usage->code == ABS_MT_TOOL_X)
694 td->curdata.cx = value;
695 else
696 td->curdata.x = value;
697 break;
698 case HID_GD_Y:
699 if (usage->code == ABS_MT_TOOL_Y)
700 td->curdata.cy = value;
701 else
702 td->curdata.y = value;
703 break;
704 case HID_DG_WIDTH:
705 td->curdata.w = value;
706 break;
707 case HID_DG_HEIGHT:
708 td->curdata.h = value;
709 break;
710 case HID_DG_CONTACTCOUNT:
711 break;
712 case HID_DG_TOUCH:
713 /* do nothing */
714 break;
715
716 default:
717 if (usage->type)
718 input_event(input, usage->type, usage->code,
719 value);
720 return;
721 }
722
723 if (usage->usage_index + 1 == field->report_count) {
724 /* we only take into account the last report. */
725 if (usage->hid == td->last_slot_field)
726 mt_complete_slot(td, field->hidinput->input);
727 }
728
729 }
730 }
731
732 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
733 {
734 struct mt_device *td = hid_get_drvdata(hid);
735 struct hid_field *field;
736 unsigned count;
737 int r, n;
738
739 /*
740 * Includes multi-packet support where subsequent
741 * packets are sent with zero contactcount.
742 */
743 if (td->cc_index >= 0) {
744 struct hid_field *field = report->field[td->cc_index];
745 int value = field->value[td->cc_value_index];
746 if (value)
747 td->num_expected = value;
748 }
749
750 for (r = 0; r < report->maxfield; r++) {
751 field = report->field[r];
752 count = field->report_count;
753
754 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
755 continue;
756
757 for (n = 0; n < count; n++)
758 mt_process_mt_event(hid, field, &field->usage[n],
759 field->value[n]);
760 }
761
762 if (td->num_received >= td->num_expected)
763 mt_sync_frame(td, report->field[0]->hidinput->input);
764 }
765
766 static int mt_touch_input_configured(struct hid_device *hdev,
767 struct hid_input *hi)
768 {
769 struct mt_device *td = hid_get_drvdata(hdev);
770 struct mt_class *cls = &td->mtclass;
771 struct input_dev *input = hi->input;
772 int ret;
773
774 if (!td->maxcontacts)
775 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
776
777 mt_post_parse(td);
778 if (td->serial_maybe)
779 mt_post_parse_default_settings(td);
780
781 if (cls->is_indirect)
782 td->mt_flags |= INPUT_MT_POINTER;
783
784 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
785 td->mt_flags |= INPUT_MT_DROP_UNUSED;
786
787 /* check for clickpads */
788 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
789 td->is_buttonpad = true;
790
791 if (td->is_buttonpad)
792 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
793
794 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
795 if (ret)
796 return ret;
797
798 td->mt_flags = 0;
799 return 0;
800 }
801
802 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
803 struct hid_field *field, struct hid_usage *usage,
804 unsigned long **bit, int *max)
805 {
806 struct mt_device *td = hid_get_drvdata(hdev);
807
808 /*
809 * If mtclass.export_all_inputs is not set, only map fields from
810 * TouchScreen or TouchPad collections. We need to ignore fields
811 * that belong to other collections such as Mouse that might have
812 * the same GenericDesktop usages.
813 */
814 if (!td->mtclass.export_all_inputs &&
815 field->application != HID_DG_TOUCHSCREEN &&
816 field->application != HID_DG_PEN &&
817 field->application != HID_DG_TOUCHPAD)
818 return -1;
819
820 /*
821 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
822 * for the stylus.
823 * The check for mt_report_id ensures we don't process
824 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
825 * collection, but within the report ID.
826 */
827 if (field->physical == HID_DG_STYLUS)
828 return 0;
829 else if ((field->physical == 0) &&
830 (field->report->id != td->mt_report_id) &&
831 (td->mt_report_id != -1))
832 return 0;
833
834 if (field->application == HID_DG_TOUCHSCREEN ||
835 field->application == HID_DG_TOUCHPAD)
836 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
837
838 /* let hid-core decide for the others */
839 return 0;
840 }
841
842 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
843 struct hid_field *field, struct hid_usage *usage,
844 unsigned long **bit, int *max)
845 {
846 /*
847 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
848 * for the stylus.
849 */
850 if (field->physical == HID_DG_STYLUS)
851 return 0;
852
853 if (field->application == HID_DG_TOUCHSCREEN ||
854 field->application == HID_DG_TOUCHPAD)
855 return mt_touch_input_mapped(hdev, hi, field, usage, bit, max);
856
857 /* let hid-core decide for the others */
858 return 0;
859 }
860
861 static int mt_event(struct hid_device *hid, struct hid_field *field,
862 struct hid_usage *usage, __s32 value)
863 {
864 struct mt_device *td = hid_get_drvdata(hid);
865
866 if (field->report->id == td->mt_report_id)
867 return mt_touch_event(hid, field, usage, value);
868
869 return 0;
870 }
871
872 static void mt_report(struct hid_device *hid, struct hid_report *report)
873 {
874 struct mt_device *td = hid_get_drvdata(hid);
875 struct hid_field *field = report->field[0];
876
877 if (!(hid->claimed & HID_CLAIMED_INPUT))
878 return;
879
880 if (report->id == td->mt_report_id)
881 return mt_touch_report(hid, report);
882
883 if (field && field->hidinput && field->hidinput->input)
884 input_sync(field->hidinput->input);
885 }
886
887 static void mt_set_input_mode(struct hid_device *hdev)
888 {
889 struct mt_device *td = hid_get_drvdata(hdev);
890 struct hid_report *r;
891 struct hid_report_enum *re;
892 struct mt_class *cls = &td->mtclass;
893 char *buf;
894 int report_len;
895
896 if (td->inputmode < 0)
897 return;
898
899 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
900 r = re->report_id_hash[td->inputmode];
901 if (r) {
902 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
903 report_len = hid_report_len(r);
904 buf = hid_alloc_report_buf(r, GFP_KERNEL);
905 if (!buf) {
906 hid_err(hdev, "failed to allocate buffer for report\n");
907 return;
908 }
909 hid_hw_raw_request(hdev, r->id, buf, report_len,
910 HID_FEATURE_REPORT,
911 HID_REQ_GET_REPORT);
912 kfree(buf);
913 }
914 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
915 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
916 }
917 }
918
919 static void mt_set_maxcontacts(struct hid_device *hdev)
920 {
921 struct mt_device *td = hid_get_drvdata(hdev);
922 struct hid_report *r;
923 struct hid_report_enum *re;
924 int fieldmax, max;
925
926 if (td->maxcontact_report_id < 0)
927 return;
928
929 if (!td->mtclass.maxcontacts)
930 return;
931
932 re = &hdev->report_enum[HID_FEATURE_REPORT];
933 r = re->report_id_hash[td->maxcontact_report_id];
934 if (r) {
935 max = td->mtclass.maxcontacts;
936 fieldmax = r->field[0]->logical_maximum;
937 max = min(fieldmax, max);
938 if (r->field[0]->value[0] != max) {
939 r->field[0]->value[0] = max;
940 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
941 }
942 }
943 }
944
945 static void mt_post_parse_default_settings(struct mt_device *td)
946 {
947 __s32 quirks = td->mtclass.quirks;
948
949 /* unknown serial device needs special quirks */
950 if (td->touches_by_report == 1) {
951 quirks |= MT_QUIRK_ALWAYS_VALID;
952 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
953 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
954 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
955 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
956 }
957
958 td->mtclass.quirks = quirks;
959 }
960
961 static void mt_post_parse(struct mt_device *td)
962 {
963 struct mt_fields *f = td->fields;
964 struct mt_class *cls = &td->mtclass;
965
966 if (td->touches_by_report > 0) {
967 int field_count_per_touch = f->length / td->touches_by_report;
968 td->last_slot_field = f->usages[field_count_per_touch - 1];
969 }
970
971 if (td->cc_index < 0)
972 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
973 }
974
975 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
976 {
977 struct mt_device *td = hid_get_drvdata(hdev);
978 char *name;
979 const char *suffix = NULL;
980 struct hid_field *field = hi->report->field[0];
981 int ret;
982
983 if (hi->report->id == td->mt_report_id) {
984 ret = mt_touch_input_configured(hdev, hi);
985 if (ret)
986 return ret;
987 }
988
989 /*
990 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
991 * for the stylus. Check this first, and then rely on the application
992 * field.
993 */
994 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
995 suffix = "Pen";
996 /* force BTN_STYLUS to allow tablet matching in udev */
997 __set_bit(BTN_STYLUS, hi->input->keybit);
998 } else {
999 switch (field->application) {
1000 case HID_GD_KEYBOARD:
1001 suffix = "Keyboard";
1002 break;
1003 case HID_GD_KEYPAD:
1004 suffix = "Keypad";
1005 break;
1006 case HID_GD_MOUSE:
1007 suffix = "Mouse";
1008 break;
1009 case HID_DG_STYLUS:
1010 suffix = "Pen";
1011 /* force BTN_STYLUS to allow tablet matching in udev */
1012 __set_bit(BTN_STYLUS, hi->input->keybit);
1013 break;
1014 case HID_DG_TOUCHSCREEN:
1015 /* we do not set suffix = "Touchscreen" */
1016 break;
1017 case HID_DG_TOUCHPAD:
1018 suffix = "Touchpad";
1019 break;
1020 case HID_GD_SYSTEM_CONTROL:
1021 suffix = "System Control";
1022 break;
1023 case HID_CP_CONSUMER_CONTROL:
1024 suffix = "Consumer Control";
1025 break;
1026 default:
1027 suffix = "UNKNOWN";
1028 break;
1029 }
1030 }
1031
1032 if (suffix) {
1033 name = devm_kzalloc(&hi->input->dev,
1034 strlen(hdev->name) + strlen(suffix) + 2,
1035 GFP_KERNEL);
1036 if (name) {
1037 sprintf(name, "%s %s", hdev->name, suffix);
1038 hi->input->name = name;
1039 }
1040 }
1041
1042 return 0;
1043 }
1044
1045 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1046 {
1047 int ret, i;
1048 struct mt_device *td;
1049 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1050
1051 for (i = 0; mt_classes[i].name ; i++) {
1052 if (id->driver_data == mt_classes[i].name) {
1053 mtclass = &(mt_classes[i]);
1054 break;
1055 }
1056 }
1057
1058 /* This allows the driver to correctly support devices
1059 * that emit events over several HID messages.
1060 */
1061 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1062
1063 /*
1064 * This allows the driver to handle different input sensors
1065 * that emits events through different reports on the same HID
1066 * device.
1067 */
1068 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1069 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1070
1071 /*
1072 * Handle special quirks for Windows 8 certified devices.
1073 */
1074 if (id->group == HID_GROUP_MULTITOUCH_WIN_8)
1075 /*
1076 * Some multitouch screens do not like to be polled for input
1077 * reports. Fortunately, the Win8 spec says that all touches
1078 * should be sent during each report, making the initialization
1079 * of input reports unnecessary.
1080 *
1081 * In addition some touchpads do not behave well if we read
1082 * all feature reports from them. Instead we prevent
1083 * initial report fetching and then selectively fetch each
1084 * report we are interested in.
1085 */
1086 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1087
1088 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1089 if (!td) {
1090 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1091 return -ENOMEM;
1092 }
1093 td->mtclass = *mtclass;
1094 td->inputmode = -1;
1095 td->maxcontact_report_id = -1;
1096 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1097 td->cc_index = -1;
1098 td->mt_report_id = -1;
1099 hid_set_drvdata(hdev, td);
1100
1101 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1102 GFP_KERNEL);
1103 if (!td->fields) {
1104 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
1105 return -ENOMEM;
1106 }
1107
1108 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1109 td->serial_maybe = true;
1110
1111 ret = hid_parse(hdev);
1112 if (ret != 0)
1113 return ret;
1114
1115 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1116 if (ret)
1117 return ret;
1118
1119 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1120
1121 mt_set_maxcontacts(hdev);
1122 mt_set_input_mode(hdev);
1123
1124 /* release .fields memory as it is not used anymore */
1125 devm_kfree(&hdev->dev, td->fields);
1126 td->fields = NULL;
1127
1128 return 0;
1129 }
1130
1131 #ifdef CONFIG_PM
1132 static int mt_reset_resume(struct hid_device *hdev)
1133 {
1134 mt_set_maxcontacts(hdev);
1135 mt_set_input_mode(hdev);
1136 return 0;
1137 }
1138
1139 static int mt_resume(struct hid_device *hdev)
1140 {
1141 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1142 * It should be safe to send it to other devices too.
1143 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1144
1145 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1146
1147 return 0;
1148 }
1149 #endif
1150
1151 static void mt_remove(struct hid_device *hdev)
1152 {
1153 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1154 hid_hw_stop(hdev);
1155 }
1156
1157 /*
1158 * This list contains only:
1159 * - VID/PID of products not working with the default multitouch handling
1160 * - 2 generic rules.
1161 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1162 */
1163 static const struct hid_device_id mt_devices[] = {
1164
1165 /* 3M panels */
1166 { .driver_data = MT_CLS_3M,
1167 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1168 USB_DEVICE_ID_3M1968) },
1169 { .driver_data = MT_CLS_3M,
1170 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1171 USB_DEVICE_ID_3M2256) },
1172 { .driver_data = MT_CLS_3M,
1173 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1174 USB_DEVICE_ID_3M3266) },
1175
1176 /* Anton devices */
1177 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1178 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1179 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1180
1181 /* Atmel panels */
1182 { .driver_data = MT_CLS_SERIAL,
1183 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1184 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1185
1186 /* Baanto multitouch devices */
1187 { .driver_data = MT_CLS_NSMU,
1188 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1189 USB_DEVICE_ID_BAANTO_MT_190W2) },
1190
1191 /* Cando panels */
1192 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1193 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1194 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1195 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1196 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1197 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1198
1199 /* Chunghwa Telecom touch panels */
1200 { .driver_data = MT_CLS_NSMU,
1201 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1202 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1203
1204 /* CJTouch panels */
1205 { .driver_data = MT_CLS_NSMU,
1206 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1207 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1208 { .driver_data = MT_CLS_NSMU,
1209 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1210 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1211
1212 /* CVTouch panels */
1213 { .driver_data = MT_CLS_NSMU,
1214 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1215 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1216
1217 /* eGalax devices (resistive) */
1218 { .driver_data = MT_CLS_EGALAX,
1219 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1220 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1221 { .driver_data = MT_CLS_EGALAX,
1222 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1223 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1224
1225 /* eGalax devices (capacitive) */
1226 { .driver_data = MT_CLS_EGALAX_SERIAL,
1227 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1228 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1229 { .driver_data = MT_CLS_EGALAX,
1230 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1231 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1232 { .driver_data = MT_CLS_EGALAX_SERIAL,
1233 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1234 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1235 { .driver_data = MT_CLS_EGALAX_SERIAL,
1236 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1237 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1238 { .driver_data = MT_CLS_EGALAX_SERIAL,
1239 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1240 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1241 { .driver_data = MT_CLS_EGALAX_SERIAL,
1242 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1243 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1244 { .driver_data = MT_CLS_EGALAX,
1245 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1246 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1247 { .driver_data = MT_CLS_EGALAX,
1248 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1249 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1250 { .driver_data = MT_CLS_EGALAX_SERIAL,
1251 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1252 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1253 { .driver_data = MT_CLS_EGALAX,
1254 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1255 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1256 { .driver_data = MT_CLS_EGALAX,
1257 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1258 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1259 { .driver_data = MT_CLS_EGALAX,
1260 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1261 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1262 { .driver_data = MT_CLS_EGALAX,
1263 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1264 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1265 { .driver_data = MT_CLS_EGALAX_SERIAL,
1266 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1267 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1268 { .driver_data = MT_CLS_EGALAX_SERIAL,
1269 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1270 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1271 { .driver_data = MT_CLS_EGALAX_SERIAL,
1272 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1273 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1274
1275 /* Elitegroup panel */
1276 { .driver_data = MT_CLS_SERIAL,
1277 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1278 USB_DEVICE_ID_ELITEGROUP_05D8) },
1279
1280 /* Flatfrog Panels */
1281 { .driver_data = MT_CLS_FLATFROG,
1282 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1283 USB_DEVICE_ID_MULTITOUCH_3200) },
1284
1285 /* FocalTech Panels */
1286 { .driver_data = MT_CLS_SERIAL,
1287 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1288 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1289
1290 /* GeneralTouch panel */
1291 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1292 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1293 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1294 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1295 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1296 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1297 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1298 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1299 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1300 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1301 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1302 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1303 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1304 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1305 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1306 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1307 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1308 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1309 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1310 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1311 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1312
1313 /* Gametel game controller */
1314 { .driver_data = MT_CLS_NSMU,
1315 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1316 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1317
1318 /* GoodTouch panels */
1319 { .driver_data = MT_CLS_NSMU,
1320 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1321 USB_DEVICE_ID_GOODTOUCH_000f) },
1322
1323 /* Hanvon panels */
1324 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1325 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1326 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1327
1328 /* Ilitek dual touch panel */
1329 { .driver_data = MT_CLS_NSMU,
1330 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1331 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1332
1333 /* MosArt panels */
1334 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1335 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1336 USB_DEVICE_ID_ASUS_T91MT)},
1337 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1338 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1339 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1340 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1341 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1342 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1343
1344 /* Panasonic panels */
1345 { .driver_data = MT_CLS_PANASONIC,
1346 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1347 USB_DEVICE_ID_PANABOARD_UBT780) },
1348 { .driver_data = MT_CLS_PANASONIC,
1349 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1350 USB_DEVICE_ID_PANABOARD_UBT880) },
1351
1352 /* Novatek Panel */
1353 { .driver_data = MT_CLS_NSMU,
1354 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1355 USB_DEVICE_ID_NOVATEK_PCT) },
1356
1357 /* PixArt optical touch screen */
1358 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1359 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1360 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1361 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1362 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1363 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1364 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1365 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1366 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1367
1368 /* PixCir-based panels */
1369 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1370 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1371 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1372
1373 /* Quanta-based panels */
1374 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1375 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1376 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1377
1378 /* Stantum panels */
1379 { .driver_data = MT_CLS_CONFIDENCE,
1380 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1381 USB_DEVICE_ID_MTP_STM)},
1382
1383 /* TopSeed panels */
1384 { .driver_data = MT_CLS_TOPSEED,
1385 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1386 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1387
1388 /* Touch International panels */
1389 { .driver_data = MT_CLS_NSMU,
1390 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1391 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1392
1393 /* Unitec panels */
1394 { .driver_data = MT_CLS_NSMU,
1395 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1396 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1397 { .driver_data = MT_CLS_NSMU,
1398 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1399 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1400
1401 /* VTL panels */
1402 { .driver_data = MT_CLS_VTL,
1403 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1404 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1405
1406 /* Wistron panels */
1407 { .driver_data = MT_CLS_NSMU,
1408 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1409 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1410
1411 /* XAT */
1412 { .driver_data = MT_CLS_NSMU,
1413 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1414 USB_DEVICE_ID_XAT_CSR) },
1415
1416 /* Xiroku */
1417 { .driver_data = MT_CLS_NSMU,
1418 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1419 USB_DEVICE_ID_XIROKU_SPX) },
1420 { .driver_data = MT_CLS_NSMU,
1421 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1422 USB_DEVICE_ID_XIROKU_MPX) },
1423 { .driver_data = MT_CLS_NSMU,
1424 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1425 USB_DEVICE_ID_XIROKU_CSR) },
1426 { .driver_data = MT_CLS_NSMU,
1427 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1428 USB_DEVICE_ID_XIROKU_SPX1) },
1429 { .driver_data = MT_CLS_NSMU,
1430 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1431 USB_DEVICE_ID_XIROKU_MPX1) },
1432 { .driver_data = MT_CLS_NSMU,
1433 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1434 USB_DEVICE_ID_XIROKU_CSR1) },
1435 { .driver_data = MT_CLS_NSMU,
1436 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1437 USB_DEVICE_ID_XIROKU_SPX2) },
1438 { .driver_data = MT_CLS_NSMU,
1439 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1440 USB_DEVICE_ID_XIROKU_MPX2) },
1441 { .driver_data = MT_CLS_NSMU,
1442 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1443 USB_DEVICE_ID_XIROKU_CSR2) },
1444
1445 /* Generic MT device */
1446 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1447
1448 /* Generic Win 8 certified MT device */
1449 { .driver_data = MT_CLS_WIN_8,
1450 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1451 HID_ANY_ID, HID_ANY_ID) },
1452 { }
1453 };
1454 MODULE_DEVICE_TABLE(hid, mt_devices);
1455
1456 static const struct hid_usage_id mt_grabbed_usages[] = {
1457 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1458 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1459 };
1460
1461 static struct hid_driver mt_driver = {
1462 .name = "hid-multitouch",
1463 .id_table = mt_devices,
1464 .probe = mt_probe,
1465 .remove = mt_remove,
1466 .input_mapping = mt_input_mapping,
1467 .input_mapped = mt_input_mapped,
1468 .input_configured = mt_input_configured,
1469 .feature_mapping = mt_feature_mapping,
1470 .usage_table = mt_grabbed_usages,
1471 .event = mt_event,
1472 .report = mt_report,
1473 #ifdef CONFIG_PM
1474 .reset_resume = mt_reset_resume,
1475 .resume = mt_resume,
1476 #endif
1477 };
1478 module_hid_driver(mt_driver);
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