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1/*
2 * HID driver for multitouch panels
3 *
4 * Copyright (c) 2010-2011 Stephane Chatty <chatty@enac.fr>
5 * Copyright (c) 2010-2011 Benjamin Tissoires <benjamin.tissoires@gmail.com>
6 * Copyright (c) 2010-2011 Ecole Nationale de l'Aviation Civile, France
7 *
8 * This code is partly based on hid-egalax.c:
9 *
10 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
11 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
12 * Copyright (c) 2010 Canonical, Ltd.
13 *
14 * This code is partly based on hid-3m-pct.c:
15 *
16 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
17 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
18 * Copyright (c) 2010 Canonical, Ltd.
19 *
20 */
21
22/*
23 * This program is free software; you can redistribute it and/or modify it
24 * under the terms of the GNU General Public License as published by the Free
25 * Software Foundation; either version 2 of the License, or (at your option)
26 * any later version.
27 */
28
29#include <linux/device.h>
30#include <linux/hid.h>
31#include <linux/module.h>
32#include <linux/slab.h>
33#include <linux/usb.h>
34#include <linux/input/mt.h>
35#include "usbhid/usbhid.h"
36
37
38MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
39MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
40MODULE_DESCRIPTION("HID multitouch panels");
41MODULE_LICENSE("GPL");
42
43#include "hid-ids.h"
44
45/* quirks to control the device */
46#define MT_QUIRK_NOT_SEEN_MEANS_UP (1 << 0)
47#define MT_QUIRK_SLOT_IS_CONTACTID (1 << 1)
48#define MT_QUIRK_CYPRESS (1 << 2)
49#define MT_QUIRK_SLOT_IS_CONTACTNUMBER (1 << 3)
50#define MT_QUIRK_VALID_IS_INRANGE (1 << 4)
51#define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 5)
52#define MT_QUIRK_EGALAX_XYZ_FIXUP (1 << 6)
53#define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 7)
54
55struct mt_slot {
56 __s32 x, y, p, w, h;
57 __s32 contactid; /* the device ContactID assigned to this slot */
58 bool touch_state; /* is the touch valid? */
59 bool seen_in_this_frame;/* has this slot been updated */
60};
61
62struct mt_device {
63 struct mt_slot curdata; /* placeholder of incoming data */
64 struct mt_class *mtclass; /* our mt device class */
65 unsigned last_field_index; /* last field index of the report */
66 unsigned last_slot_field; /* the last field of a slot */
67 int last_mt_collection; /* last known mt-related collection */
68 __s8 inputmode; /* InputMode HID feature, -1 if non-existent */
69 __u8 num_received; /* how many contacts we received */
70 __u8 num_expected; /* expected last contact index */
71 __u8 maxcontacts;
72 bool curvalid; /* is the current contact valid? */
73 struct mt_slot *slots;
74};
75
76struct mt_class {
77 __s32 name; /* MT_CLS */
78 __s32 quirks;
79 __s32 sn_move; /* Signal/noise ratio for move events */
80 __s32 sn_width; /* Signal/noise ratio for width events */
81 __s32 sn_height; /* Signal/noise ratio for height events */
82 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
83 __u8 maxcontacts;
84};
85
86/* classes of device behavior */
87#define MT_CLS_DEFAULT 0x0001
88
89#define MT_CLS_CONFIDENCE 0x0002
90#define MT_CLS_CONFIDENCE_MINUS_ONE 0x0003
91#define MT_CLS_DUAL_INRANGE_CONTACTID 0x0004
92#define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0005
93#define MT_CLS_DUAL_NSMU_CONTACTID 0x0006
94
95/* vendor specific classes */
96#define MT_CLS_3M 0x0101
97#define MT_CLS_CYPRESS 0x0102
98#define MT_CLS_EGALAX 0x0103
99
100#define MT_DEFAULT_MAXCONTACT 10
101
102/*
103 * these device-dependent functions determine what slot corresponds
104 * to a valid contact that was just read.
105 */
106
107static int cypress_compute_slot(struct mt_device *td)
108{
109 if (td->curdata.contactid != 0 || td->num_received == 0)
110 return td->curdata.contactid;
111 else
112 return -1;
113}
114
115static int find_slot_from_contactid(struct mt_device *td)
116{
117 int i;
118 for (i = 0; i < td->maxcontacts; ++i) {
119 if (td->slots[i].contactid == td->curdata.contactid &&
120 td->slots[i].touch_state)
121 return i;
122 }
123 for (i = 0; i < td->maxcontacts; ++i) {
124 if (!td->slots[i].seen_in_this_frame &&
125 !td->slots[i].touch_state)
126 return i;
127 }
128 /* should not occurs. If this happens that means
129 * that the device sent more touches that it says
130 * in the report descriptor. It is ignored then. */
131 return -1;
132}
133
134struct mt_class mt_classes[] = {
135 { .name = MT_CLS_DEFAULT,
136 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
137 { .name = MT_CLS_CONFIDENCE,
138 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
139 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
140 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
141 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
142 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
143 .quirks = MT_QUIRK_VALID_IS_INRANGE |
144 MT_QUIRK_SLOT_IS_CONTACTID,
145 .maxcontacts = 2 },
146 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
147 .quirks = MT_QUIRK_VALID_IS_INRANGE |
148 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
149 .maxcontacts = 2 },
150 { .name = MT_CLS_DUAL_NSMU_CONTACTID,
151 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
152 MT_QUIRK_SLOT_IS_CONTACTID,
153 .maxcontacts = 2 },
154
155 /*
156 * vendor specific classes
157 */
158 { .name = MT_CLS_3M,
159 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
160 MT_QUIRK_SLOT_IS_CONTACTID,
161 .sn_move = 2048,
162 .sn_width = 128,
163 .sn_height = 128 },
164 { .name = MT_CLS_CYPRESS,
165 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
166 MT_QUIRK_CYPRESS,
167 .maxcontacts = 10 },
168 { .name = MT_CLS_EGALAX,
169 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
170 MT_QUIRK_VALID_IS_INRANGE |
171 MT_QUIRK_EGALAX_XYZ_FIXUP,
172 .maxcontacts = 2,
173 .sn_move = 4096,
174 .sn_pressure = 32,
175 },
176
177 { }
178};
179
180static void mt_feature_mapping(struct hid_device *hdev,
181 struct hid_field *field, struct hid_usage *usage)
182{
183 struct mt_device *td = hid_get_drvdata(hdev);
184
185 switch (usage->hid) {
186 case HID_DG_INPUTMODE:
187 td->inputmode = field->report->id;
188 break;
189 case HID_DG_CONTACTMAX:
190 td->maxcontacts = field->value[0];
191 if (td->mtclass->maxcontacts)
192 /* check if the maxcontacts is given by the class */
193 td->maxcontacts = td->mtclass->maxcontacts;
194
195 break;
196 }
197}
198
199static void set_abs(struct input_dev *input, unsigned int code,
200 struct hid_field *field, int snratio)
201{
202 int fmin = field->logical_minimum;
203 int fmax = field->logical_maximum;
204 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
205 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
206}
207
208static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
209 struct hid_field *field, struct hid_usage *usage,
210 unsigned long **bit, int *max)
211{
212 struct mt_device *td = hid_get_drvdata(hdev);
213 struct mt_class *cls = td->mtclass;
214 __s32 quirks = cls->quirks;
215
216 switch (usage->hid & HID_USAGE_PAGE) {
217
218 case HID_UP_GENDESK:
219 switch (usage->hid) {
220 case HID_GD_X:
221 if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
222 field->logical_maximum = 32760;
223 hid_map_usage(hi, usage, bit, max,
224 EV_ABS, ABS_MT_POSITION_X);
225 set_abs(hi->input, ABS_MT_POSITION_X, field,
226 cls->sn_move);
227 /* touchscreen emulation */
228 set_abs(hi->input, ABS_X, field, cls->sn_move);
229 if (td->last_mt_collection == usage->collection_index) {
230 td->last_slot_field = usage->hid;
231 td->last_field_index = field->index;
232 }
233 return 1;
234 case HID_GD_Y:
235 if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
236 field->logical_maximum = 32760;
237 hid_map_usage(hi, usage, bit, max,
238 EV_ABS, ABS_MT_POSITION_Y);
239 set_abs(hi->input, ABS_MT_POSITION_Y, field,
240 cls->sn_move);
241 /* touchscreen emulation */
242 set_abs(hi->input, ABS_Y, field, cls->sn_move);
243 if (td->last_mt_collection == usage->collection_index) {
244 td->last_slot_field = usage->hid;
245 td->last_field_index = field->index;
246 }
247 return 1;
248 }
249 return 0;
250
251 case HID_UP_DIGITIZER:
252 switch (usage->hid) {
253 case HID_DG_INRANGE:
254 if (td->last_mt_collection == usage->collection_index) {
255 td->last_slot_field = usage->hid;
256 td->last_field_index = field->index;
257 }
258 return 1;
259 case HID_DG_CONFIDENCE:
260 if (td->last_mt_collection == usage->collection_index) {
261 td->last_slot_field = usage->hid;
262 td->last_field_index = field->index;
263 }
264 return 1;
265 case HID_DG_TIPSWITCH:
266 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
267 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
268 if (td->last_mt_collection == usage->collection_index) {
269 td->last_slot_field = usage->hid;
270 td->last_field_index = field->index;
271 }
272 return 1;
273 case HID_DG_CONTACTID:
274 if (!td->maxcontacts)
275 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
276 input_mt_init_slots(hi->input, td->maxcontacts);
277 td->last_slot_field = usage->hid;
278 td->last_field_index = field->index;
279 td->last_mt_collection = usage->collection_index;
280 return 1;
281 case HID_DG_WIDTH:
282 hid_map_usage(hi, usage, bit, max,
283 EV_ABS, ABS_MT_TOUCH_MAJOR);
284 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
285 cls->sn_width);
286 if (td->last_mt_collection == usage->collection_index) {
287 td->last_slot_field = usage->hid;
288 td->last_field_index = field->index;
289 }
290 return 1;
291 case HID_DG_HEIGHT:
292 hid_map_usage(hi, usage, bit, max,
293 EV_ABS, ABS_MT_TOUCH_MINOR);
294 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
295 cls->sn_height);
296 input_set_abs_params(hi->input,
297 ABS_MT_ORIENTATION, 0, 1, 0, 0);
298 if (td->last_mt_collection == usage->collection_index) {
299 td->last_slot_field = usage->hid;
300 td->last_field_index = field->index;
301 }
302 return 1;
303 case HID_DG_TIPPRESSURE:
304 if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
305 field->logical_minimum = 0;
306 hid_map_usage(hi, usage, bit, max,
307 EV_ABS, ABS_MT_PRESSURE);
308 set_abs(hi->input, ABS_MT_PRESSURE, field,
309 cls->sn_pressure);
310 /* touchscreen emulation */
311 set_abs(hi->input, ABS_PRESSURE, field,
312 cls->sn_pressure);
313 if (td->last_mt_collection == usage->collection_index) {
314 td->last_slot_field = usage->hid;
315 td->last_field_index = field->index;
316 }
317 return 1;
318 case HID_DG_CONTACTCOUNT:
319 if (td->last_mt_collection == usage->collection_index)
320 td->last_field_index = field->index;
321 return 1;
322 case HID_DG_CONTACTMAX:
323 /* we don't set td->last_slot_field as contactcount and
324 * contact max are global to the report */
325 if (td->last_mt_collection == usage->collection_index)
326 td->last_field_index = field->index;
327 return -1;
328 }
329 /* let hid-input decide for the others */
330 return 0;
331
332 case 0xff000000:
333 /* we do not want to map these: no input-oriented meaning */
334 return -1;
335 }
336
337 return 0;
338}
339
340static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
341 struct hid_field *field, struct hid_usage *usage,
342 unsigned long **bit, int *max)
343{
344 if (usage->type == EV_KEY || usage->type == EV_ABS)
345 set_bit(usage->type, hi->input->evbit);
346
347 return -1;
348}
349
350static int mt_compute_slot(struct mt_device *td)
351{
352 __s32 quirks = td->mtclass->quirks;
353
354 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
355 return td->curdata.contactid;
356
357 if (quirks & MT_QUIRK_CYPRESS)
358 return cypress_compute_slot(td);
359
360 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
361 return td->num_received;
362
363 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
364 return td->curdata.contactid - 1;
365
366 return find_slot_from_contactid(td);
367}
368
369/*
370 * this function is called when a whole contact has been processed,
371 * so that it can assign it to a slot and store the data there
372 */
373static void mt_complete_slot(struct mt_device *td)
374{
375 td->curdata.seen_in_this_frame = true;
376 if (td->curvalid) {
377 int slotnum = mt_compute_slot(td);
378
379 if (slotnum >= 0 && slotnum < td->maxcontacts)
380 td->slots[slotnum] = td->curdata;
381 }
382 td->num_received++;
383}
384
385
386/*
387 * this function is called when a whole packet has been received and processed,
388 * so that it can decide what to send to the input layer.
389 */
390static void mt_emit_event(struct mt_device *td, struct input_dev *input)
391{
392 int i;
393
394 for (i = 0; i < td->maxcontacts; ++i) {
395 struct mt_slot *s = &(td->slots[i]);
396 if ((td->mtclass->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
397 !s->seen_in_this_frame) {
398 s->touch_state = false;
399 }
400
401 input_mt_slot(input, i);
402 input_mt_report_slot_state(input, MT_TOOL_FINGER,
403 s->touch_state);
404 if (s->touch_state) {
405 /* this finger is on the screen */
406 int wide = (s->w > s->h);
407 /* divided by two to match visual scale of touch */
408 int major = max(s->w, s->h) >> 1;
409 int minor = min(s->w, s->h) >> 1;
410
411 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
412 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
413 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
414 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
415 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
416 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
417 }
418 s->seen_in_this_frame = false;
419
420 }
421
422 input_mt_report_pointer_emulation(input, true);
423 input_sync(input);
424 td->num_received = 0;
425}
426
427
428
429static int mt_event(struct hid_device *hid, struct hid_field *field,
430 struct hid_usage *usage, __s32 value)
431{
432 struct mt_device *td = hid_get_drvdata(hid);
433 __s32 quirks = td->mtclass->quirks;
434
435 if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
436 switch (usage->hid) {
437 case HID_DG_INRANGE:
438 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
439 td->curvalid = value;
440 break;
441 case HID_DG_TIPSWITCH:
442 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
443 td->curvalid = value;
444 td->curdata.touch_state = value;
445 break;
446 case HID_DG_CONFIDENCE:
447 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
448 td->curvalid = value;
449 break;
450 case HID_DG_CONTACTID:
451 td->curdata.contactid = value;
452 break;
453 case HID_DG_TIPPRESSURE:
454 td->curdata.p = value;
455 break;
456 case HID_GD_X:
457 td->curdata.x = value;
458 break;
459 case HID_GD_Y:
460 td->curdata.y = value;
461 break;
462 case HID_DG_WIDTH:
463 td->curdata.w = value;
464 break;
465 case HID_DG_HEIGHT:
466 td->curdata.h = value;
467 break;
468 case HID_DG_CONTACTCOUNT:
469 /*
470 * Includes multi-packet support where subsequent
471 * packets are sent with zero contactcount.
472 */
473 if (value)
474 td->num_expected = value;
475 break;
476
477 default:
478 /* fallback to the generic hidinput handling */
479 return 0;
480 }
481
482 if (usage->hid == td->last_slot_field) {
483 mt_complete_slot(td);
484 }
485
486 if (field->index == td->last_field_index
487 && td->num_received >= td->num_expected)
488 mt_emit_event(td, field->hidinput->input);
489
490 }
491
492 /* we have handled the hidinput part, now remains hiddev */
493 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
494 hid->hiddev_hid_event(hid, field, usage, value);
495
496 return 1;
497}
498
499static void mt_set_input_mode(struct hid_device *hdev)
500{
501 struct mt_device *td = hid_get_drvdata(hdev);
502 struct hid_report *r;
503 struct hid_report_enum *re;
504
505 if (td->inputmode < 0)
506 return;
507
508 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
509 r = re->report_id_hash[td->inputmode];
510 if (r) {
511 r->field[0]->value[0] = 0x02;
512 usbhid_submit_report(hdev, r, USB_DIR_OUT);
513 }
514}
515
516static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
517{
518 int ret, i;
519 struct mt_device *td;
520 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
521
522 for (i = 0; mt_classes[i].name ; i++) {
523 if (id->driver_data == mt_classes[i].name) {
524 mtclass = &(mt_classes[i]);
525 break;
526 }
527 }
528
529 /* This allows the driver to correctly support devices
530 * that emit events over several HID messages.
531 */
532 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
533
534 td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
535 if (!td) {
536 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
537 return -ENOMEM;
538 }
539 td->mtclass = mtclass;
540 td->inputmode = -1;
541 td->last_mt_collection = -1;
542 hid_set_drvdata(hdev, td);
543
544 ret = hid_parse(hdev);
545 if (ret != 0)
546 goto fail;
547
548 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
549 if (ret)
550 goto fail;
551
552 td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
553 GFP_KERNEL);
554 if (!td->slots) {
555 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
556 hid_hw_stop(hdev);
557 ret = -ENOMEM;
558 goto fail;
559 }
560
561 mt_set_input_mode(hdev);
562
563 return 0;
564
565fail:
566 kfree(td);
567 return ret;
568}
569
570#ifdef CONFIG_PM
571static int mt_reset_resume(struct hid_device *hdev)
572{
573 mt_set_input_mode(hdev);
574 return 0;
575}
576#endif
577
578static void mt_remove(struct hid_device *hdev)
579{
580 struct mt_device *td = hid_get_drvdata(hdev);
581 hid_hw_stop(hdev);
582 kfree(td->slots);
583 kfree(td);
584 hid_set_drvdata(hdev, NULL);
585}
586
587static const struct hid_device_id mt_devices[] = {
588
589 /* 3M panels */
590 { .driver_data = MT_CLS_3M,
591 HID_USB_DEVICE(USB_VENDOR_ID_3M,
592 USB_DEVICE_ID_3M1968) },
593 { .driver_data = MT_CLS_3M,
594 HID_USB_DEVICE(USB_VENDOR_ID_3M,
595 USB_DEVICE_ID_3M2256) },
596
597 /* ActionStar panels */
598 { .driver_data = MT_CLS_DEFAULT,
599 HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
600 USB_DEVICE_ID_ACTIONSTAR_1011) },
601
602 /* Cando panels */
603 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
604 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
605 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
606 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
607 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
608 USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
609 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
610 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
611 USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
612 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
613 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
614 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
615
616 /* Chunghwa Telecom touch panels */
617 { .driver_data = MT_CLS_DEFAULT,
618 HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
619 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
620
621 /* CVTouch panels */
622 { .driver_data = MT_CLS_DEFAULT,
623 HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
624 USB_DEVICE_ID_CVTOUCH_SCREEN) },
625
626 /* Cypress panel */
627 { .driver_data = MT_CLS_CYPRESS,
628 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
629 USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
630
631 /* eGalax devices (resistive) */
632 { .driver_data = MT_CLS_EGALAX,
633 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
634 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
635 { .driver_data = MT_CLS_EGALAX,
636 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
637 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
638
639 /* eGalax devices (capacitive) */
640 { .driver_data = MT_CLS_EGALAX,
641 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
642 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
643 { .driver_data = MT_CLS_EGALAX,
644 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
645 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
646 { .driver_data = MT_CLS_EGALAX,
647 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
648 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
649
650 /* Elo TouchSystems IntelliTouch Plus panel */
651 { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
652 HID_USB_DEVICE(USB_VENDOR_ID_ELO,
653 USB_DEVICE_ID_ELO_TS2515) },
654
655 /* GeneralTouch panel */
656 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
657 HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
658 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
659
660 /* GoodTouch panels */
661 { .driver_data = MT_CLS_DEFAULT,
662 HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
663 USB_DEVICE_ID_GOODTOUCH_000f) },
664
665 /* Ilitek dual touch panel */
666 { .driver_data = MT_CLS_DEFAULT,
667 HID_USB_DEVICE(USB_VENDOR_ID_ILITEK,
668 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
669
670 /* IRTOUCH panels */
671 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
672 HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
673 USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
674
675 /* Lumio panels */
676 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
677 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
678 USB_DEVICE_ID_CRYSTALTOUCH) },
679 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
680 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
681 USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
682
683 /* MosArt panels */
684 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
685 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
686 USB_DEVICE_ID_ASUS_T91MT)},
687 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
688 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
689 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
690 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
691 HID_USB_DEVICE(USB_VENDOR_ID_TURBOX,
692 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
693
694 /* PenMount panels */
695 { .driver_data = MT_CLS_CONFIDENCE,
696 HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
697 USB_DEVICE_ID_PENMOUNT_PCI) },
698
699 /* PixCir-based panels */
700 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
701 HID_USB_DEVICE(USB_VENDOR_ID_HANVON,
702 USB_DEVICE_ID_HANVON_MULTITOUCH) },
703 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
704 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
705 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
706
707 /* Stantum panels */
708 { .driver_data = MT_CLS_CONFIDENCE,
709 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
710 USB_DEVICE_ID_MTP)},
711 { .driver_data = MT_CLS_CONFIDENCE,
712 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
713 USB_DEVICE_ID_MTP_STM)},
714 { .driver_data = MT_CLS_CONFIDENCE,
715 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
716 USB_DEVICE_ID_MTP_SITRONIX)},
717
718 /* Touch International panels */
719 { .driver_data = MT_CLS_DEFAULT,
720 HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
721 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
722
723 /* Unitec panels */
724 { .driver_data = MT_CLS_DEFAULT,
725 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
726 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
727 { .driver_data = MT_CLS_DEFAULT,
728 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
729 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
730 /* XAT */
731 { .driver_data = MT_CLS_DEFAULT,
732 HID_USB_DEVICE(USB_VENDOR_ID_XAT,
733 USB_DEVICE_ID_XAT_CSR) },
734
735 { }
736};
737MODULE_DEVICE_TABLE(hid, mt_devices);
738
739static const struct hid_usage_id mt_grabbed_usages[] = {
740 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
741 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
742};
743
744static struct hid_driver mt_driver = {
745 .name = "hid-multitouch",
746 .id_table = mt_devices,
747 .probe = mt_probe,
748 .remove = mt_remove,
749 .input_mapping = mt_input_mapping,
750 .input_mapped = mt_input_mapped,
751 .feature_mapping = mt_feature_mapping,
752 .usage_table = mt_grabbed_usages,
753 .event = mt_event,
754#ifdef CONFIG_PM
755 .reset_resume = mt_reset_resume,
756#endif
757};
758
759static int __init mt_init(void)
760{
761 return hid_register_driver(&mt_driver);
762}
763
764static void __exit mt_exit(void)
765{
766 hid_unregister_driver(&mt_driver);
767}
768
769module_init(mt_init);
770module_exit(mt_exit);
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * HID driver for multitouch panels
4 *
5 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
6 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
7 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
8 * Copyright (c) 2012-2013 Red Hat, Inc
9 *
10 * This code is partly based on hid-egalax.c:
11 *
12 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
13 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
14 * Copyright (c) 2010 Canonical, Ltd.
15 *
16 * This code is partly based on hid-3m-pct.c:
17 *
18 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
19 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
20 * Copyright (c) 2010 Canonical, Ltd.
21 */
22
23/*
24 */
25
26/*
27 * This driver is regularly tested thanks to the test suite in hid-tools[1].
28 * Please run these regression tests before patching this module so that
29 * your patch won't break existing known devices.
30 *
31 * [1] https://gitlab.freedesktop.org/libevdev/hid-tools
32 */
33
34#include <linux/device.h>
35#include <linux/hid.h>
36#include <linux/module.h>
37#include <linux/slab.h>
38#include <linux/input/mt.h>
39#include <linux/jiffies.h>
40#include <linux/string.h>
41#include <linux/timer.h>
42
43
44MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
45MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
46MODULE_DESCRIPTION("HID multitouch panels");
47MODULE_LICENSE("GPL");
48
49#include "hid-ids.h"
50
51/* quirks to control the device */
52#define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0)
53#define MT_QUIRK_SLOT_IS_CONTACTID BIT(1)
54#define MT_QUIRK_CYPRESS BIT(2)
55#define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3)
56#define MT_QUIRK_ALWAYS_VALID BIT(4)
57#define MT_QUIRK_VALID_IS_INRANGE BIT(5)
58#define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6)
59#define MT_QUIRK_CONFIDENCE BIT(7)
60#define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8)
61#define MT_QUIRK_NO_AREA BIT(9)
62#define MT_QUIRK_IGNORE_DUPLICATES BIT(10)
63#define MT_QUIRK_HOVERING BIT(11)
64#define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12)
65#define MT_QUIRK_FORCE_GET_FEATURE BIT(13)
66#define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14)
67#define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15)
68#define MT_QUIRK_STICKY_FINGERS BIT(16)
69#define MT_QUIRK_ASUS_CUSTOM_UP BIT(17)
70#define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18)
71#define MT_QUIRK_SEPARATE_APP_REPORT BIT(19)
72#define MT_QUIRK_FORCE_MULTI_INPUT BIT(20)
73#define MT_QUIRK_DISABLE_WAKEUP BIT(21)
74#define MT_QUIRK_ORIENTATION_INVERT BIT(22)
75
76#define MT_INPUTMODE_TOUCHSCREEN 0x02
77#define MT_INPUTMODE_TOUCHPAD 0x03
78
79#define MT_BUTTONTYPE_CLICKPAD 0
80
81enum latency_mode {
82 HID_LATENCY_NORMAL = 0,
83 HID_LATENCY_HIGH = 1,
84};
85
86#define MT_IO_FLAGS_RUNNING 0
87#define MT_IO_FLAGS_ACTIVE_SLOTS 1
88#define MT_IO_FLAGS_PENDING_SLOTS 2
89
90static const bool mtrue = true; /* default for true */
91static const bool mfalse; /* default for false */
92static const __s32 mzero; /* default for 0 */
93
94#define DEFAULT_TRUE ((void *)&mtrue)
95#define DEFAULT_FALSE ((void *)&mfalse)
96#define DEFAULT_ZERO ((void *)&mzero)
97
98struct mt_usages {
99 struct list_head list;
100 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a;
101 __s32 *contactid; /* the device ContactID assigned to this slot */
102 bool *tip_state; /* is the touch valid? */
103 bool *inrange_state; /* is the finger in proximity of the sensor? */
104 bool *confidence_state; /* is the touch made by a finger? */
105};
106
107struct mt_application {
108 struct list_head list;
109 unsigned int application;
110 unsigned int report_id;
111 struct list_head mt_usages; /* mt usages list */
112
113 __s32 quirks;
114
115 __s32 *scantime; /* scantime reported */
116 __s32 scantime_logical_max; /* max value for raw scantime */
117
118 __s32 *raw_cc; /* contact count in the report */
119 int left_button_state; /* left button state */
120 unsigned int mt_flags; /* flags to pass to input-mt */
121
122 unsigned long *pending_palm_slots; /* slots where we reported palm
123 * and need to release */
124
125 __u8 num_received; /* how many contacts we received */
126 __u8 num_expected; /* expected last contact index */
127 __u8 buttons_count; /* number of physical buttons per touchpad */
128 __u8 touches_by_report; /* how many touches are present in one report:
129 * 1 means we should use a serial protocol
130 * > 1 means hybrid (multitouch) protocol
131 */
132
133 unsigned long jiffies; /* the frame's jiffies */
134 int timestamp; /* the timestamp to be sent */
135 int prev_scantime; /* scantime reported previously */
136
137 bool have_contact_count;
138};
139
140struct mt_class {
141 __s32 name; /* MT_CLS */
142 __s32 quirks;
143 __s32 sn_move; /* Signal/noise ratio for move events */
144 __s32 sn_width; /* Signal/noise ratio for width events */
145 __s32 sn_height; /* Signal/noise ratio for height events */
146 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
147 __u8 maxcontacts;
148 bool is_indirect; /* true for touchpads */
149 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
150};
151
152struct mt_report_data {
153 struct list_head list;
154 struct hid_report *report;
155 struct mt_application *application;
156 bool is_mt_collection;
157};
158
159struct mt_device {
160 struct mt_class mtclass; /* our mt device class */
161 struct timer_list release_timer; /* to release sticky fingers */
162 struct hid_device *hdev; /* hid_device we're attached to */
163 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */
164 __u8 inputmode_value; /* InputMode HID feature value */
165 __u8 maxcontacts;
166 bool is_buttonpad; /* is this device a button pad? */
167 bool serial_maybe; /* need to check for serial protocol */
168
169 struct list_head applications;
170 struct list_head reports;
171};
172
173static void mt_post_parse_default_settings(struct mt_device *td,
174 struct mt_application *app);
175static void mt_post_parse(struct mt_device *td, struct mt_application *app);
176
177/* classes of device behavior */
178#define MT_CLS_DEFAULT 0x0001
179
180#define MT_CLS_SERIAL 0x0002
181#define MT_CLS_CONFIDENCE 0x0003
182#define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
183#define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
184#define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
185#define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
186/* reserved 0x0008 */
187#define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
188#define MT_CLS_NSMU 0x000a
189/* reserved 0x0010 */
190/* reserved 0x0011 */
191#define MT_CLS_WIN_8 0x0012
192#define MT_CLS_EXPORT_ALL_INPUTS 0x0013
193/* reserved 0x0014 */
194#define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015
195#define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016
196#define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017
197#define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU 0x0018
198
199/* vendor specific classes */
200#define MT_CLS_3M 0x0101
201/* reserved 0x0102 */
202#define MT_CLS_EGALAX 0x0103
203#define MT_CLS_EGALAX_SERIAL 0x0104
204#define MT_CLS_TOPSEED 0x0105
205#define MT_CLS_PANASONIC 0x0106
206#define MT_CLS_FLATFROG 0x0107
207#define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
208#define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
209#define MT_CLS_LG 0x010a
210#define MT_CLS_ASUS 0x010b
211#define MT_CLS_VTL 0x0110
212#define MT_CLS_GOOGLE 0x0111
213#define MT_CLS_RAZER_BLADE_STEALTH 0x0112
214#define MT_CLS_SMART_TECH 0x0113
215
216#define MT_DEFAULT_MAXCONTACT 10
217#define MT_MAX_MAXCONTACT 250
218
219/*
220 * Resync device and local timestamps after that many microseconds without
221 * receiving data.
222 */
223#define MAX_TIMESTAMP_INTERVAL 1000000
224
225#define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
226#define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
227
228/*
229 * these device-dependent functions determine what slot corresponds
230 * to a valid contact that was just read.
231 */
232
233static int cypress_compute_slot(struct mt_application *application,
234 struct mt_usages *slot)
235{
236 if (*slot->contactid != 0 || application->num_received == 0)
237 return *slot->contactid;
238 else
239 return -1;
240}
241
242static const struct mt_class mt_classes[] = {
243 { .name = MT_CLS_DEFAULT,
244 .quirks = MT_QUIRK_ALWAYS_VALID |
245 MT_QUIRK_CONTACT_CNT_ACCURATE },
246 { .name = MT_CLS_NSMU,
247 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
248 { .name = MT_CLS_SERIAL,
249 .quirks = MT_QUIRK_ALWAYS_VALID},
250 { .name = MT_CLS_CONFIDENCE,
251 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
252 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
253 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
254 MT_QUIRK_SLOT_IS_CONTACTID },
255 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
256 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
257 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
258 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
259 .quirks = MT_QUIRK_VALID_IS_INRANGE |
260 MT_QUIRK_SLOT_IS_CONTACTID,
261 .maxcontacts = 2 },
262 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
263 .quirks = MT_QUIRK_VALID_IS_INRANGE |
264 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
265 .maxcontacts = 2 },
266 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
267 .quirks = MT_QUIRK_VALID_IS_INRANGE |
268 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
269 { .name = MT_CLS_WIN_8,
270 .quirks = MT_QUIRK_ALWAYS_VALID |
271 MT_QUIRK_IGNORE_DUPLICATES |
272 MT_QUIRK_HOVERING |
273 MT_QUIRK_CONTACT_CNT_ACCURATE |
274 MT_QUIRK_STICKY_FINGERS |
275 MT_QUIRK_WIN8_PTP_BUTTONS,
276 .export_all_inputs = true },
277 { .name = MT_CLS_EXPORT_ALL_INPUTS,
278 .quirks = MT_QUIRK_ALWAYS_VALID |
279 MT_QUIRK_CONTACT_CNT_ACCURATE,
280 .export_all_inputs = true },
281 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
282 .quirks = MT_QUIRK_ALWAYS_VALID |
283 MT_QUIRK_IGNORE_DUPLICATES |
284 MT_QUIRK_HOVERING |
285 MT_QUIRK_CONTACT_CNT_ACCURATE |
286 MT_QUIRK_STICKY_FINGERS |
287 MT_QUIRK_WIN8_PTP_BUTTONS |
288 MT_QUIRK_FORCE_MULTI_INPUT,
289 .export_all_inputs = true },
290 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
291 .quirks = MT_QUIRK_IGNORE_DUPLICATES |
292 MT_QUIRK_HOVERING |
293 MT_QUIRK_CONTACT_CNT_ACCURATE |
294 MT_QUIRK_STICKY_FINGERS |
295 MT_QUIRK_WIN8_PTP_BUTTONS |
296 MT_QUIRK_FORCE_MULTI_INPUT |
297 MT_QUIRK_NOT_SEEN_MEANS_UP,
298 .export_all_inputs = true },
299 { .name = MT_CLS_WIN_8_DISABLE_WAKEUP,
300 .quirks = MT_QUIRK_ALWAYS_VALID |
301 MT_QUIRK_IGNORE_DUPLICATES |
302 MT_QUIRK_HOVERING |
303 MT_QUIRK_CONTACT_CNT_ACCURATE |
304 MT_QUIRK_STICKY_FINGERS |
305 MT_QUIRK_WIN8_PTP_BUTTONS |
306 MT_QUIRK_DISABLE_WAKEUP,
307 .export_all_inputs = true },
308 { .name = MT_CLS_WIN_8_NO_STICKY_FINGERS,
309 .quirks = MT_QUIRK_ALWAYS_VALID |
310 MT_QUIRK_IGNORE_DUPLICATES |
311 MT_QUIRK_HOVERING |
312 MT_QUIRK_CONTACT_CNT_ACCURATE |
313 MT_QUIRK_WIN8_PTP_BUTTONS,
314 .export_all_inputs = true },
315
316 /*
317 * vendor specific classes
318 */
319 { .name = MT_CLS_3M,
320 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
321 MT_QUIRK_SLOT_IS_CONTACTID |
322 MT_QUIRK_TOUCH_SIZE_SCALING,
323 .sn_move = 2048,
324 .sn_width = 128,
325 .sn_height = 128,
326 .maxcontacts = 60,
327 },
328 { .name = MT_CLS_EGALAX,
329 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
330 MT_QUIRK_VALID_IS_INRANGE,
331 .sn_move = 4096,
332 .sn_pressure = 32,
333 },
334 { .name = MT_CLS_EGALAX_SERIAL,
335 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
336 MT_QUIRK_ALWAYS_VALID,
337 .sn_move = 4096,
338 .sn_pressure = 32,
339 },
340 { .name = MT_CLS_TOPSEED,
341 .quirks = MT_QUIRK_ALWAYS_VALID,
342 .is_indirect = true,
343 .maxcontacts = 2,
344 },
345 { .name = MT_CLS_PANASONIC,
346 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
347 .maxcontacts = 4 },
348 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
349 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
350 MT_QUIRK_VALID_IS_INRANGE |
351 MT_QUIRK_SLOT_IS_CONTACTID,
352 .maxcontacts = 2
353 },
354 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
355 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
356 MT_QUIRK_SLOT_IS_CONTACTID
357 },
358
359 { .name = MT_CLS_FLATFROG,
360 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
361 MT_QUIRK_NO_AREA,
362 .sn_move = 2048,
363 .maxcontacts = 40,
364 },
365 { .name = MT_CLS_LG,
366 .quirks = MT_QUIRK_ALWAYS_VALID |
367 MT_QUIRK_FIX_CONST_CONTACT_ID |
368 MT_QUIRK_IGNORE_DUPLICATES |
369 MT_QUIRK_HOVERING |
370 MT_QUIRK_CONTACT_CNT_ACCURATE },
371 { .name = MT_CLS_ASUS,
372 .quirks = MT_QUIRK_ALWAYS_VALID |
373 MT_QUIRK_CONTACT_CNT_ACCURATE |
374 MT_QUIRK_ASUS_CUSTOM_UP },
375 { .name = MT_CLS_VTL,
376 .quirks = MT_QUIRK_ALWAYS_VALID |
377 MT_QUIRK_CONTACT_CNT_ACCURATE |
378 MT_QUIRK_FORCE_GET_FEATURE,
379 },
380 { .name = MT_CLS_GOOGLE,
381 .quirks = MT_QUIRK_ALWAYS_VALID |
382 MT_QUIRK_CONTACT_CNT_ACCURATE |
383 MT_QUIRK_SLOT_IS_CONTACTID |
384 MT_QUIRK_HOVERING
385 },
386 { .name = MT_CLS_RAZER_BLADE_STEALTH,
387 .quirks = MT_QUIRK_ALWAYS_VALID |
388 MT_QUIRK_IGNORE_DUPLICATES |
389 MT_QUIRK_HOVERING |
390 MT_QUIRK_CONTACT_CNT_ACCURATE |
391 MT_QUIRK_WIN8_PTP_BUTTONS,
392 },
393 { .name = MT_CLS_SMART_TECH,
394 .quirks = MT_QUIRK_ALWAYS_VALID |
395 MT_QUIRK_IGNORE_DUPLICATES |
396 MT_QUIRK_CONTACT_CNT_ACCURATE |
397 MT_QUIRK_SEPARATE_APP_REPORT,
398 },
399 { }
400};
401
402static ssize_t mt_show_quirks(struct device *dev,
403 struct device_attribute *attr,
404 char *buf)
405{
406 struct hid_device *hdev = to_hid_device(dev);
407 struct mt_device *td = hid_get_drvdata(hdev);
408
409 return sprintf(buf, "%u\n", td->mtclass.quirks);
410}
411
412static ssize_t mt_set_quirks(struct device *dev,
413 struct device_attribute *attr,
414 const char *buf, size_t count)
415{
416 struct hid_device *hdev = to_hid_device(dev);
417 struct mt_device *td = hid_get_drvdata(hdev);
418 struct mt_application *application;
419
420 unsigned long val;
421
422 if (kstrtoul(buf, 0, &val))
423 return -EINVAL;
424
425 td->mtclass.quirks = val;
426
427 list_for_each_entry(application, &td->applications, list) {
428 application->quirks = val;
429 if (!application->have_contact_count)
430 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
431 }
432
433 return count;
434}
435
436static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
437
438static struct attribute *sysfs_attrs[] = {
439 &dev_attr_quirks.attr,
440 NULL
441};
442
443static const struct attribute_group mt_attribute_group = {
444 .attrs = sysfs_attrs
445};
446
447static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
448{
449 int ret;
450 u32 size = hid_report_len(report);
451 u8 *buf;
452
453 /*
454 * Do not fetch the feature report if the device has been explicitly
455 * marked as non-capable.
456 */
457 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS)
458 return;
459
460 buf = hid_alloc_report_buf(report, GFP_KERNEL);
461 if (!buf)
462 return;
463
464 ret = hid_hw_raw_request(hdev, report->id, buf, size,
465 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
466 if (ret < 0) {
467 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
468 report->id);
469 } else {
470 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
471 size, 0);
472 if (ret)
473 dev_warn(&hdev->dev, "failed to report feature\n");
474 }
475
476 kfree(buf);
477}
478
479static void mt_feature_mapping(struct hid_device *hdev,
480 struct hid_field *field, struct hid_usage *usage)
481{
482 struct mt_device *td = hid_get_drvdata(hdev);
483
484 switch (usage->hid) {
485 case HID_DG_CONTACTMAX:
486 mt_get_feature(hdev, field->report);
487
488 td->maxcontacts = field->value[0];
489 if (!td->maxcontacts &&
490 field->logical_maximum <= MT_MAX_MAXCONTACT)
491 td->maxcontacts = field->logical_maximum;
492 if (td->mtclass.maxcontacts)
493 /* check if the maxcontacts is given by the class */
494 td->maxcontacts = td->mtclass.maxcontacts;
495
496 break;
497 case HID_DG_BUTTONTYPE:
498 if (usage->usage_index >= field->report_count) {
499 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
500 break;
501 }
502
503 mt_get_feature(hdev, field->report);
504 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
505 td->is_buttonpad = true;
506
507 break;
508 case 0xff0000c5:
509 /* Retrieve the Win8 blob once to enable some devices */
510 if (usage->usage_index == 0)
511 mt_get_feature(hdev, field->report);
512 break;
513 }
514}
515
516static void set_abs(struct input_dev *input, unsigned int code,
517 struct hid_field *field, int snratio)
518{
519 int fmin = field->logical_minimum;
520 int fmax = field->logical_maximum;
521 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
522 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
523 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
524}
525
526static struct mt_usages *mt_allocate_usage(struct hid_device *hdev,
527 struct mt_application *application)
528{
529 struct mt_usages *usage;
530
531 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL);
532 if (!usage)
533 return NULL;
534
535 /* set some defaults so we do not need to check for null pointers */
536 usage->x = DEFAULT_ZERO;
537 usage->y = DEFAULT_ZERO;
538 usage->cx = DEFAULT_ZERO;
539 usage->cy = DEFAULT_ZERO;
540 usage->p = DEFAULT_ZERO;
541 usage->w = DEFAULT_ZERO;
542 usage->h = DEFAULT_ZERO;
543 usage->a = DEFAULT_ZERO;
544 usage->contactid = DEFAULT_ZERO;
545 usage->tip_state = DEFAULT_FALSE;
546 usage->inrange_state = DEFAULT_FALSE;
547 usage->confidence_state = DEFAULT_TRUE;
548
549 list_add_tail(&usage->list, &application->mt_usages);
550
551 return usage;
552}
553
554static struct mt_application *mt_allocate_application(struct mt_device *td,
555 struct hid_report *report)
556{
557 unsigned int application = report->application;
558 struct mt_application *mt_application;
559
560 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application),
561 GFP_KERNEL);
562 if (!mt_application)
563 return NULL;
564
565 mt_application->application = application;
566 INIT_LIST_HEAD(&mt_application->mt_usages);
567
568 if (application == HID_DG_TOUCHSCREEN)
569 mt_application->mt_flags |= INPUT_MT_DIRECT;
570
571 /*
572 * Model touchscreens providing buttons as touchpads.
573 */
574 if (application == HID_DG_TOUCHPAD) {
575 mt_application->mt_flags |= INPUT_MT_POINTER;
576 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
577 }
578
579 mt_application->scantime = DEFAULT_ZERO;
580 mt_application->raw_cc = DEFAULT_ZERO;
581 mt_application->quirks = td->mtclass.quirks;
582 mt_application->report_id = report->id;
583
584 list_add_tail(&mt_application->list, &td->applications);
585
586 return mt_application;
587}
588
589static struct mt_application *mt_find_application(struct mt_device *td,
590 struct hid_report *report)
591{
592 unsigned int application = report->application;
593 struct mt_application *tmp, *mt_application = NULL;
594
595 list_for_each_entry(tmp, &td->applications, list) {
596 if (application == tmp->application) {
597 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) ||
598 tmp->report_id == report->id) {
599 mt_application = tmp;
600 break;
601 }
602 }
603 }
604
605 if (!mt_application)
606 mt_application = mt_allocate_application(td, report);
607
608 return mt_application;
609}
610
611static struct mt_report_data *mt_allocate_report_data(struct mt_device *td,
612 struct hid_report *report)
613{
614 struct mt_report_data *rdata;
615 struct hid_field *field;
616 int r, n;
617
618 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL);
619 if (!rdata)
620 return NULL;
621
622 rdata->report = report;
623 rdata->application = mt_find_application(td, report);
624
625 if (!rdata->application) {
626 devm_kfree(&td->hdev->dev, rdata);
627 return NULL;
628 }
629
630 for (r = 0; r < report->maxfield; r++) {
631 field = report->field[r];
632
633 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
634 continue;
635
636 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) {
637 for (n = 0; n < field->report_count; n++) {
638 if (field->usage[n].hid == HID_DG_CONTACTID) {
639 rdata->is_mt_collection = true;
640 break;
641 }
642 }
643 }
644 }
645
646 list_add_tail(&rdata->list, &td->reports);
647
648 return rdata;
649}
650
651static struct mt_report_data *mt_find_report_data(struct mt_device *td,
652 struct hid_report *report)
653{
654 struct mt_report_data *tmp, *rdata = NULL;
655
656 list_for_each_entry(tmp, &td->reports, list) {
657 if (report == tmp->report) {
658 rdata = tmp;
659 break;
660 }
661 }
662
663 if (!rdata)
664 rdata = mt_allocate_report_data(td, report);
665
666 return rdata;
667}
668
669static void mt_store_field(struct hid_device *hdev,
670 struct mt_application *application,
671 __s32 *value,
672 size_t offset)
673{
674 struct mt_usages *usage;
675 __s32 **target;
676
677 if (list_empty(&application->mt_usages))
678 usage = mt_allocate_usage(hdev, application);
679 else
680 usage = list_last_entry(&application->mt_usages,
681 struct mt_usages,
682 list);
683
684 if (!usage)
685 return;
686
687 target = (__s32 **)((char *)usage + offset);
688
689 /* the value has already been filled, create a new slot */
690 if (*target != DEFAULT_TRUE &&
691 *target != DEFAULT_FALSE &&
692 *target != DEFAULT_ZERO) {
693 if (usage->contactid == DEFAULT_ZERO ||
694 usage->x == DEFAULT_ZERO ||
695 usage->y == DEFAULT_ZERO) {
696 hid_dbg(hdev,
697 "ignoring duplicate usage on incomplete");
698 return;
699 }
700 usage = mt_allocate_usage(hdev, application);
701 if (!usage)
702 return;
703
704 target = (__s32 **)((char *)usage + offset);
705 }
706
707 *target = value;
708}
709
710#define MT_STORE_FIELD(__name) \
711 mt_store_field(hdev, app, \
712 &field->value[usage->usage_index], \
713 offsetof(struct mt_usages, __name))
714
715static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
716 struct hid_field *field, struct hid_usage *usage,
717 unsigned long **bit, int *max, struct mt_application *app)
718{
719 struct mt_device *td = hid_get_drvdata(hdev);
720 struct mt_class *cls = &td->mtclass;
721 int code;
722 struct hid_usage *prev_usage = NULL;
723
724 /*
725 * Model touchscreens providing buttons as touchpads.
726 */
727 if (field->application == HID_DG_TOUCHSCREEN &&
728 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
729 app->mt_flags |= INPUT_MT_POINTER;
730 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
731 }
732
733 /* count the buttons on touchpads */
734 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
735 app->buttons_count++;
736
737 if (usage->usage_index)
738 prev_usage = &field->usage[usage->usage_index - 1];
739
740 switch (usage->hid & HID_USAGE_PAGE) {
741
742 case HID_UP_GENDESK:
743 switch (usage->hid) {
744 case HID_GD_X:
745 if (prev_usage && (prev_usage->hid == usage->hid)) {
746 code = ABS_MT_TOOL_X;
747 MT_STORE_FIELD(cx);
748 } else {
749 code = ABS_MT_POSITION_X;
750 MT_STORE_FIELD(x);
751 }
752
753 set_abs(hi->input, code, field, cls->sn_move);
754
755 /*
756 * A system multi-axis that exports X and Y has a high
757 * chance of being used directly on a surface
758 */
759 if (field->application == HID_GD_SYSTEM_MULTIAXIS) {
760 __set_bit(INPUT_PROP_DIRECT,
761 hi->input->propbit);
762 input_set_abs_params(hi->input,
763 ABS_MT_TOOL_TYPE,
764 MT_TOOL_DIAL,
765 MT_TOOL_DIAL, 0, 0);
766 }
767
768 return 1;
769 case HID_GD_Y:
770 if (prev_usage && (prev_usage->hid == usage->hid)) {
771 code = ABS_MT_TOOL_Y;
772 MT_STORE_FIELD(cy);
773 } else {
774 code = ABS_MT_POSITION_Y;
775 MT_STORE_FIELD(y);
776 }
777
778 set_abs(hi->input, code, field, cls->sn_move);
779
780 return 1;
781 }
782 return 0;
783
784 case HID_UP_DIGITIZER:
785 switch (usage->hid) {
786 case HID_DG_INRANGE:
787 if (app->quirks & MT_QUIRK_HOVERING) {
788 input_set_abs_params(hi->input,
789 ABS_MT_DISTANCE, 0, 1, 0, 0);
790 }
791 MT_STORE_FIELD(inrange_state);
792 return 1;
793 case HID_DG_CONFIDENCE:
794 if ((cls->name == MT_CLS_WIN_8 ||
795 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT ||
796 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU ||
797 cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP) &&
798 (field->application == HID_DG_TOUCHPAD ||
799 field->application == HID_DG_TOUCHSCREEN))
800 app->quirks |= MT_QUIRK_CONFIDENCE;
801
802 if (app->quirks & MT_QUIRK_CONFIDENCE)
803 input_set_abs_params(hi->input,
804 ABS_MT_TOOL_TYPE,
805 MT_TOOL_FINGER,
806 MT_TOOL_PALM, 0, 0);
807
808 MT_STORE_FIELD(confidence_state);
809 return 1;
810 case HID_DG_TIPSWITCH:
811 if (field->application != HID_GD_SYSTEM_MULTIAXIS)
812 input_set_capability(hi->input,
813 EV_KEY, BTN_TOUCH);
814 MT_STORE_FIELD(tip_state);
815 return 1;
816 case HID_DG_CONTACTID:
817 MT_STORE_FIELD(contactid);
818 app->touches_by_report++;
819 return 1;
820 case HID_DG_WIDTH:
821 if (!(app->quirks & MT_QUIRK_NO_AREA))
822 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
823 cls->sn_width);
824 MT_STORE_FIELD(w);
825 return 1;
826 case HID_DG_HEIGHT:
827 if (!(app->quirks & MT_QUIRK_NO_AREA)) {
828 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
829 cls->sn_height);
830
831 /*
832 * Only set ABS_MT_ORIENTATION if it is not
833 * already set by the HID_DG_AZIMUTH usage.
834 */
835 if (!test_bit(ABS_MT_ORIENTATION,
836 hi->input->absbit))
837 input_set_abs_params(hi->input,
838 ABS_MT_ORIENTATION, 0, 1, 0, 0);
839 }
840 MT_STORE_FIELD(h);
841 return 1;
842 case HID_DG_TIPPRESSURE:
843 set_abs(hi->input, ABS_MT_PRESSURE, field,
844 cls->sn_pressure);
845 MT_STORE_FIELD(p);
846 return 1;
847 case HID_DG_SCANTIME:
848 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
849 app->scantime = &field->value[usage->usage_index];
850 app->scantime_logical_max = field->logical_maximum;
851 return 1;
852 case HID_DG_CONTACTCOUNT:
853 app->have_contact_count = true;
854 app->raw_cc = &field->value[usage->usage_index];
855 return 1;
856 case HID_DG_AZIMUTH:
857 /*
858 * Azimuth has the range of [0, MAX) representing a full
859 * revolution. Set ABS_MT_ORIENTATION to a quarter of
860 * MAX according the definition of ABS_MT_ORIENTATION
861 */
862 input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
863 -field->logical_maximum / 4,
864 field->logical_maximum / 4,
865 cls->sn_move ?
866 field->logical_maximum / cls->sn_move : 0, 0);
867 MT_STORE_FIELD(a);
868 return 1;
869 case HID_DG_CONTACTMAX:
870 /* contact max are global to the report */
871 return -1;
872 case HID_DG_TOUCH:
873 /* Legacy devices use TIPSWITCH and not TOUCH.
874 * Let's just ignore this field. */
875 return -1;
876 }
877 /* let hid-input decide for the others */
878 return 0;
879
880 case HID_UP_BUTTON:
881 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
882 /*
883 * MS PTP spec says that external buttons left and right have
884 * usages 2 and 3.
885 */
886 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
887 field->application == HID_DG_TOUCHPAD &&
888 (usage->hid & HID_USAGE) > 1)
889 code--;
890
891 if (field->application == HID_GD_SYSTEM_MULTIAXIS)
892 code = BTN_0 + ((usage->hid - 1) & HID_USAGE);
893
894 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
895 if (!*bit)
896 return -1;
897 input_set_capability(hi->input, EV_KEY, code);
898 return 1;
899
900 case 0xff000000:
901 /* we do not want to map these: no input-oriented meaning */
902 return -1;
903 }
904
905 return 0;
906}
907
908static int mt_compute_slot(struct mt_device *td, struct mt_application *app,
909 struct mt_usages *slot,
910 struct input_dev *input)
911{
912 __s32 quirks = app->quirks;
913
914 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
915 return *slot->contactid;
916
917 if (quirks & MT_QUIRK_CYPRESS)
918 return cypress_compute_slot(app, slot);
919
920 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
921 return app->num_received;
922
923 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
924 return *slot->contactid - 1;
925
926 return input_mt_get_slot_by_key(input, *slot->contactid);
927}
928
929static void mt_release_pending_palms(struct mt_device *td,
930 struct mt_application *app,
931 struct input_dev *input)
932{
933 int slotnum;
934 bool need_sync = false;
935
936 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) {
937 clear_bit(slotnum, app->pending_palm_slots);
938
939 input_mt_slot(input, slotnum);
940 input_mt_report_slot_inactive(input);
941
942 need_sync = true;
943 }
944
945 if (need_sync) {
946 input_mt_sync_frame(input);
947 input_sync(input);
948 }
949}
950
951/*
952 * this function is called when a whole packet has been received and processed,
953 * so that it can decide what to send to the input layer.
954 */
955static void mt_sync_frame(struct mt_device *td, struct mt_application *app,
956 struct input_dev *input)
957{
958 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS)
959 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state);
960
961 input_mt_sync_frame(input);
962 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp);
963 input_sync(input);
964
965 mt_release_pending_palms(td, app, input);
966
967 app->num_received = 0;
968 app->left_button_state = 0;
969
970 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
971 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
972 else
973 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
974 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
975}
976
977static int mt_compute_timestamp(struct mt_application *app, __s32 value)
978{
979 long delta = value - app->prev_scantime;
980 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies);
981
982 app->jiffies = jiffies;
983
984 if (delta < 0)
985 delta += app->scantime_logical_max;
986
987 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
988 delta *= 100;
989
990 if (jdelta > MAX_TIMESTAMP_INTERVAL)
991 /* No data received for a while, resync the timestamp. */
992 return 0;
993 else
994 return app->timestamp + delta;
995}
996
997static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
998 struct hid_usage *usage, __s32 value)
999{
1000 /* we will handle the hidinput part later, now remains hiddev */
1001 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
1002 hid->hiddev_hid_event(hid, field, usage, value);
1003
1004 return 1;
1005}
1006
1007static int mt_process_slot(struct mt_device *td, struct input_dev *input,
1008 struct mt_application *app,
1009 struct mt_usages *slot)
1010{
1011 struct input_mt *mt = input->mt;
1012 struct hid_device *hdev = td->hdev;
1013 __s32 quirks = app->quirks;
1014 bool valid = true;
1015 bool confidence_state = true;
1016 bool inrange_state = false;
1017 int active;
1018 int slotnum;
1019 int tool = MT_TOOL_FINGER;
1020
1021 if (!slot)
1022 return -EINVAL;
1023
1024 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
1025 app->num_received >= app->num_expected)
1026 return -EAGAIN;
1027
1028 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) {
1029 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
1030 valid = *slot->inrange_state;
1031 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
1032 valid = *slot->tip_state;
1033 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
1034 valid = *slot->confidence_state;
1035
1036 if (!valid)
1037 return 0;
1038 }
1039
1040 slotnum = mt_compute_slot(td, app, slot, input);
1041 if (slotnum < 0 || slotnum >= td->maxcontacts)
1042 return 0;
1043
1044 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
1045 struct input_mt_slot *i_slot = &mt->slots[slotnum];
1046
1047 if (input_mt_is_active(i_slot) &&
1048 input_mt_is_used(mt, i_slot))
1049 return -EAGAIN;
1050 }
1051
1052 if (quirks & MT_QUIRK_CONFIDENCE)
1053 confidence_state = *slot->confidence_state;
1054
1055 if (quirks & MT_QUIRK_HOVERING)
1056 inrange_state = *slot->inrange_state;
1057
1058 active = *slot->tip_state || inrange_state;
1059
1060 if (app->application == HID_GD_SYSTEM_MULTIAXIS)
1061 tool = MT_TOOL_DIAL;
1062 else if (unlikely(!confidence_state)) {
1063 tool = MT_TOOL_PALM;
1064 if (!active && mt &&
1065 input_mt_is_active(&mt->slots[slotnum])) {
1066 /*
1067 * The non-confidence was reported for
1068 * previously valid contact that is also no
1069 * longer valid. We can't simply report
1070 * lift-off as userspace will not be aware
1071 * of non-confidence, so we need to split
1072 * it into 2 events: active MT_TOOL_PALM
1073 * and a separate liftoff.
1074 */
1075 active = true;
1076 set_bit(slotnum, app->pending_palm_slots);
1077 }
1078 }
1079
1080 input_mt_slot(input, slotnum);
1081 input_mt_report_slot_state(input, tool, active);
1082 if (active) {
1083 /* this finger is in proximity of the sensor */
1084 int wide = (*slot->w > *slot->h);
1085 int major = max(*slot->w, *slot->h);
1086 int minor = min(*slot->w, *slot->h);
1087 int orientation = wide;
1088 int max_azimuth;
1089 int azimuth;
1090 int x;
1091 int y;
1092 int cx;
1093 int cy;
1094
1095 if (slot->a != DEFAULT_ZERO) {
1096 /*
1097 * Azimuth is counter-clockwise and ranges from [0, MAX)
1098 * (a full revolution). Convert it to clockwise ranging
1099 * [-MAX/2, MAX/2].
1100 *
1101 * Note that ABS_MT_ORIENTATION require us to report
1102 * the limit of [-MAX/4, MAX/4], but the value can go
1103 * out of range to [-MAX/2, MAX/2] to report an upside
1104 * down ellipsis.
1105 */
1106 azimuth = *slot->a;
1107 max_azimuth = input_abs_get_max(input,
1108 ABS_MT_ORIENTATION);
1109 if (azimuth > max_azimuth * 2)
1110 azimuth -= max_azimuth * 4;
1111 orientation = -azimuth;
1112 if (quirks & MT_QUIRK_ORIENTATION_INVERT)
1113 orientation = -orientation;
1114
1115 }
1116
1117 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
1118 /*
1119 * divided by two to match visual scale of touch
1120 * for devices with this quirk
1121 */
1122 major = major >> 1;
1123 minor = minor >> 1;
1124 }
1125
1126 x = hdev->quirks & HID_QUIRK_X_INVERT ?
1127 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->x :
1128 *slot->x;
1129 y = hdev->quirks & HID_QUIRK_Y_INVERT ?
1130 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->y :
1131 *slot->y;
1132 cx = hdev->quirks & HID_QUIRK_X_INVERT ?
1133 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->cx :
1134 *slot->cx;
1135 cy = hdev->quirks & HID_QUIRK_Y_INVERT ?
1136 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->cy :
1137 *slot->cy;
1138
1139 input_event(input, EV_ABS, ABS_MT_POSITION_X, x);
1140 input_event(input, EV_ABS, ABS_MT_POSITION_Y, y);
1141 input_event(input, EV_ABS, ABS_MT_TOOL_X, cx);
1142 input_event(input, EV_ABS, ABS_MT_TOOL_Y, cy);
1143 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state);
1144 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation);
1145 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p);
1146 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
1147 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
1148
1149 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
1150 }
1151
1152 return 0;
1153}
1154
1155static void mt_process_mt_event(struct hid_device *hid,
1156 struct mt_application *app,
1157 struct hid_field *field,
1158 struct hid_usage *usage,
1159 __s32 value,
1160 bool first_packet)
1161{
1162 __s32 quirks = app->quirks;
1163 struct input_dev *input = field->hidinput->input;
1164
1165 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT))
1166 return;
1167
1168 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) {
1169
1170 /*
1171 * For Win8 PTP touchpads we should only look at
1172 * non finger/touch events in the first_packet of a
1173 * (possible) multi-packet frame.
1174 */
1175 if (!first_packet)
1176 return;
1177
1178 /*
1179 * For Win8 PTP touchpads we map both the clickpad click
1180 * and any "external" left buttons to BTN_LEFT if a
1181 * device claims to have both we need to report 1 for
1182 * BTN_LEFT if either is pressed, so we or all values
1183 * together and report the result in mt_sync_frame().
1184 */
1185 if (usage->type == EV_KEY && usage->code == BTN_LEFT) {
1186 app->left_button_state |= value;
1187 return;
1188 }
1189 }
1190
1191 input_event(input, usage->type, usage->code, value);
1192}
1193
1194static void mt_touch_report(struct hid_device *hid,
1195 struct mt_report_data *rdata)
1196{
1197 struct mt_device *td = hid_get_drvdata(hid);
1198 struct hid_report *report = rdata->report;
1199 struct mt_application *app = rdata->application;
1200 struct hid_field *field;
1201 struct input_dev *input;
1202 struct mt_usages *slot;
1203 bool first_packet;
1204 unsigned count;
1205 int r, n;
1206 int scantime = 0;
1207 int contact_count = -1;
1208
1209 /* sticky fingers release in progress, abort */
1210 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1211 return;
1212
1213 scantime = *app->scantime;
1214 app->timestamp = mt_compute_timestamp(app, scantime);
1215 if (app->raw_cc != DEFAULT_ZERO)
1216 contact_count = *app->raw_cc;
1217
1218 /*
1219 * Includes multi-packet support where subsequent
1220 * packets are sent with zero contactcount.
1221 */
1222 if (contact_count >= 0) {
1223 /*
1224 * For Win8 PTPs the first packet (td->num_received == 0) may
1225 * have a contactcount of 0 if there only is a button event.
1226 * We double check that this is not a continuation packet
1227 * of a possible multi-packet frame be checking that the
1228 * timestamp has changed.
1229 */
1230 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
1231 app->num_received == 0 &&
1232 app->prev_scantime != scantime)
1233 app->num_expected = contact_count;
1234 /* A non 0 contact count always indicates a first packet */
1235 else if (contact_count)
1236 app->num_expected = contact_count;
1237 }
1238 app->prev_scantime = scantime;
1239
1240 first_packet = app->num_received == 0;
1241
1242 input = report->field[0]->hidinput->input;
1243
1244 list_for_each_entry(slot, &app->mt_usages, list) {
1245 if (!mt_process_slot(td, input, app, slot))
1246 app->num_received++;
1247 }
1248
1249 for (r = 0; r < report->maxfield; r++) {
1250 field = report->field[r];
1251 count = field->report_count;
1252
1253 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
1254 continue;
1255
1256 for (n = 0; n < count; n++)
1257 mt_process_mt_event(hid, app, field,
1258 &field->usage[n], field->value[n],
1259 first_packet);
1260 }
1261
1262 if (app->num_received >= app->num_expected)
1263 mt_sync_frame(td, app, input);
1264
1265 /*
1266 * Windows 8 specs says 2 things:
1267 * - once a contact has been reported, it has to be reported in each
1268 * subsequent report
1269 * - the report rate when fingers are present has to be at least
1270 * the refresh rate of the screen, 60 or 120 Hz
1271 *
1272 * I interprete this that the specification forces a report rate of
1273 * at least 60 Hz for a touchscreen to be certified.
1274 * Which means that if we do not get a report whithin 16 ms, either
1275 * something wrong happens, either the touchscreen forgets to send
1276 * a release. Taking a reasonable margin allows to remove issues
1277 * with USB communication or the load of the machine.
1278 *
1279 * Given that Win 8 devices are forced to send a release, this will
1280 * only affect laggish machines and the ones that have a firmware
1281 * defect.
1282 */
1283 if (app->quirks & MT_QUIRK_STICKY_FINGERS) {
1284 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1285 mod_timer(&td->release_timer,
1286 jiffies + msecs_to_jiffies(100));
1287 else
1288 del_timer(&td->release_timer);
1289 }
1290
1291 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1292}
1293
1294static int mt_touch_input_configured(struct hid_device *hdev,
1295 struct hid_input *hi,
1296 struct mt_application *app)
1297{
1298 struct mt_device *td = hid_get_drvdata(hdev);
1299 struct mt_class *cls = &td->mtclass;
1300 struct input_dev *input = hi->input;
1301 int ret;
1302
1303 if (!td->maxcontacts)
1304 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
1305
1306 mt_post_parse(td, app);
1307 if (td->serial_maybe)
1308 mt_post_parse_default_settings(td, app);
1309
1310 if (cls->is_indirect)
1311 app->mt_flags |= INPUT_MT_POINTER;
1312
1313 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
1314 app->mt_flags |= INPUT_MT_DROP_UNUSED;
1315
1316 /* check for clickpads */
1317 if ((app->mt_flags & INPUT_MT_POINTER) &&
1318 (app->buttons_count == 1))
1319 td->is_buttonpad = true;
1320
1321 if (td->is_buttonpad)
1322 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
1323
1324 app->pending_palm_slots = devm_kcalloc(&hi->input->dev,
1325 BITS_TO_LONGS(td->maxcontacts),
1326 sizeof(long),
1327 GFP_KERNEL);
1328 if (!app->pending_palm_slots)
1329 return -ENOMEM;
1330
1331 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags);
1332 if (ret)
1333 return ret;
1334
1335 app->mt_flags = 0;
1336 return 0;
1337}
1338
1339#define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
1340 max, EV_KEY, (c))
1341static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
1342 struct hid_field *field, struct hid_usage *usage,
1343 unsigned long **bit, int *max)
1344{
1345 struct mt_device *td = hid_get_drvdata(hdev);
1346 struct mt_application *application;
1347 struct mt_report_data *rdata;
1348
1349 rdata = mt_find_report_data(td, field->report);
1350 if (!rdata) {
1351 hid_err(hdev, "failed to allocate data for report\n");
1352 return 0;
1353 }
1354
1355 application = rdata->application;
1356
1357 /*
1358 * If mtclass.export_all_inputs is not set, only map fields from
1359 * TouchScreen or TouchPad collections. We need to ignore fields
1360 * that belong to other collections such as Mouse that might have
1361 * the same GenericDesktop usages.
1362 */
1363 if (!td->mtclass.export_all_inputs &&
1364 field->application != HID_DG_TOUCHSCREEN &&
1365 field->application != HID_DG_PEN &&
1366 field->application != HID_DG_TOUCHPAD &&
1367 field->application != HID_GD_KEYBOARD &&
1368 field->application != HID_GD_SYSTEM_CONTROL &&
1369 field->application != HID_CP_CONSUMER_CONTROL &&
1370 field->application != HID_GD_WIRELESS_RADIO_CTLS &&
1371 field->application != HID_GD_SYSTEM_MULTIAXIS &&
1372 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1373 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP))
1374 return -1;
1375
1376 /*
1377 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
1378 * touchpad report descriptor. We need to treat these as an array to
1379 * map usages to input keys.
1380 */
1381 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1382 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
1383 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
1384 set_bit(EV_REP, hi->input->evbit);
1385 if (field->flags & HID_MAIN_ITEM_VARIABLE)
1386 field->flags &= ~HID_MAIN_ITEM_VARIABLE;
1387 switch (usage->hid & HID_USAGE) {
1388 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break;
1389 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break;
1390 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break;
1391 case 0x6b: mt_map_key_clear(KEY_F21); break;
1392 case 0x6c: mt_map_key_clear(KEY_SLEEP); break;
1393 default:
1394 return -1;
1395 }
1396 return 1;
1397 }
1398
1399 if (rdata->is_mt_collection)
1400 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max,
1401 application);
1402
1403 /*
1404 * some egalax touchscreens have "application == DG_TOUCHSCREEN"
1405 * for the stylus. Overwrite the hid_input application
1406 */
1407 if (field->physical == HID_DG_STYLUS)
1408 hi->application = HID_DG_STYLUS;
1409
1410 /* let hid-core decide for the others */
1411 return 0;
1412}
1413
1414static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
1415 struct hid_field *field, struct hid_usage *usage,
1416 unsigned long **bit, int *max)
1417{
1418 struct mt_device *td = hid_get_drvdata(hdev);
1419 struct mt_report_data *rdata;
1420
1421 rdata = mt_find_report_data(td, field->report);
1422 if (rdata && rdata->is_mt_collection) {
1423 /* We own these mappings, tell hid-input to ignore them */
1424 return -1;
1425 }
1426
1427 /* let hid-core decide for the others */
1428 return 0;
1429}
1430
1431static int mt_event(struct hid_device *hid, struct hid_field *field,
1432 struct hid_usage *usage, __s32 value)
1433{
1434 struct mt_device *td = hid_get_drvdata(hid);
1435 struct mt_report_data *rdata;
1436
1437 rdata = mt_find_report_data(td, field->report);
1438 if (rdata && rdata->is_mt_collection)
1439 return mt_touch_event(hid, field, usage, value);
1440
1441 return 0;
1442}
1443
1444static void mt_report(struct hid_device *hid, struct hid_report *report)
1445{
1446 struct mt_device *td = hid_get_drvdata(hid);
1447 struct hid_field *field = report->field[0];
1448 struct mt_report_data *rdata;
1449
1450 if (!(hid->claimed & HID_CLAIMED_INPUT))
1451 return;
1452
1453 rdata = mt_find_report_data(td, report);
1454 if (rdata && rdata->is_mt_collection)
1455 return mt_touch_report(hid, rdata);
1456
1457 if (field && field->hidinput && field->hidinput->input)
1458 input_sync(field->hidinput->input);
1459}
1460
1461static bool mt_need_to_apply_feature(struct hid_device *hdev,
1462 struct hid_field *field,
1463 struct hid_usage *usage,
1464 enum latency_mode latency,
1465 bool surface_switch,
1466 bool button_switch,
1467 bool *inputmode_found)
1468{
1469 struct mt_device *td = hid_get_drvdata(hdev);
1470 struct mt_class *cls = &td->mtclass;
1471 struct hid_report *report = field->report;
1472 unsigned int index = usage->usage_index;
1473 char *buf;
1474 u32 report_len;
1475 int max;
1476
1477 switch (usage->hid) {
1478 case HID_DG_INPUTMODE:
1479 /*
1480 * Some elan panels wrongly declare 2 input mode features,
1481 * and silently ignore when we set the value in the second
1482 * field. Skip the second feature and hope for the best.
1483 */
1484 if (*inputmode_found)
1485 return false;
1486
1487 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1488 report_len = hid_report_len(report);
1489 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1490 if (!buf) {
1491 hid_err(hdev,
1492 "failed to allocate buffer for report\n");
1493 return false;
1494 }
1495 hid_hw_raw_request(hdev, report->id, buf, report_len,
1496 HID_FEATURE_REPORT,
1497 HID_REQ_GET_REPORT);
1498 kfree(buf);
1499 }
1500
1501 field->value[index] = td->inputmode_value;
1502 *inputmode_found = true;
1503 return true;
1504
1505 case HID_DG_CONTACTMAX:
1506 if (cls->maxcontacts) {
1507 max = min_t(int, field->logical_maximum,
1508 cls->maxcontacts);
1509 if (field->value[index] != max) {
1510 field->value[index] = max;
1511 return true;
1512 }
1513 }
1514 break;
1515
1516 case HID_DG_LATENCYMODE:
1517 field->value[index] = latency;
1518 return true;
1519
1520 case HID_DG_SURFACESWITCH:
1521 field->value[index] = surface_switch;
1522 return true;
1523
1524 case HID_DG_BUTTONSWITCH:
1525 field->value[index] = button_switch;
1526 return true;
1527 }
1528
1529 return false; /* no need to update the report */
1530}
1531
1532static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency,
1533 bool surface_switch, bool button_switch)
1534{
1535 struct hid_report_enum *rep_enum;
1536 struct hid_report *rep;
1537 struct hid_usage *usage;
1538 int i, j;
1539 bool update_report;
1540 bool inputmode_found = false;
1541
1542 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
1543 list_for_each_entry(rep, &rep_enum->report_list, list) {
1544 update_report = false;
1545
1546 for (i = 0; i < rep->maxfield; i++) {
1547 /* Ignore if report count is out of bounds. */
1548 if (rep->field[i]->report_count < 1)
1549 continue;
1550
1551 for (j = 0; j < rep->field[i]->maxusage; j++) {
1552 usage = &rep->field[i]->usage[j];
1553
1554 if (mt_need_to_apply_feature(hdev,
1555 rep->field[i],
1556 usage,
1557 latency,
1558 surface_switch,
1559 button_switch,
1560 &inputmode_found))
1561 update_report = true;
1562 }
1563 }
1564
1565 if (update_report)
1566 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT);
1567 }
1568}
1569
1570static void mt_post_parse_default_settings(struct mt_device *td,
1571 struct mt_application *app)
1572{
1573 __s32 quirks = app->quirks;
1574
1575 /* unknown serial device needs special quirks */
1576 if (list_is_singular(&app->mt_usages)) {
1577 quirks |= MT_QUIRK_ALWAYS_VALID;
1578 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1579 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1580 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1581 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1582 }
1583
1584 app->quirks = quirks;
1585}
1586
1587static void mt_post_parse(struct mt_device *td, struct mt_application *app)
1588{
1589 if (!app->have_contact_count)
1590 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1591}
1592
1593static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1594{
1595 struct mt_device *td = hid_get_drvdata(hdev);
1596 const char *suffix = NULL;
1597 struct mt_report_data *rdata;
1598 struct mt_application *mt_application = NULL;
1599 struct hid_report *report;
1600 int ret;
1601
1602 list_for_each_entry(report, &hi->reports, hidinput_list) {
1603 rdata = mt_find_report_data(td, report);
1604 if (!rdata) {
1605 hid_err(hdev, "failed to allocate data for report\n");
1606 return -ENOMEM;
1607 }
1608
1609 mt_application = rdata->application;
1610
1611 if (rdata->is_mt_collection) {
1612 ret = mt_touch_input_configured(hdev, hi,
1613 mt_application);
1614 if (ret)
1615 return ret;
1616 }
1617 }
1618
1619 switch (hi->application) {
1620 case HID_GD_KEYBOARD:
1621 case HID_GD_KEYPAD:
1622 case HID_GD_MOUSE:
1623 case HID_DG_TOUCHPAD:
1624 case HID_GD_SYSTEM_CONTROL:
1625 case HID_CP_CONSUMER_CONTROL:
1626 case HID_GD_WIRELESS_RADIO_CTLS:
1627 case HID_GD_SYSTEM_MULTIAXIS:
1628 /* already handled by hid core */
1629 break;
1630 case HID_DG_TOUCHSCREEN:
1631 /* we do not set suffix = "Touchscreen" */
1632 hi->input->name = hdev->name;
1633 break;
1634 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1635 suffix = "Custom Media Keys";
1636 break;
1637 case HID_DG_STYLUS:
1638 /* force BTN_STYLUS to allow tablet matching in udev */
1639 __set_bit(BTN_STYLUS, hi->input->keybit);
1640 break;
1641 default:
1642 suffix = "UNKNOWN";
1643 break;
1644 }
1645
1646 if (suffix)
1647 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
1648 "%s %s", hdev->name, suffix);
1649
1650 return 0;
1651}
1652
1653static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1654{
1655 if (field->usage[0].hid != usage ||
1656 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1657 return;
1658
1659 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1660 field->flags |= HID_MAIN_ITEM_VARIABLE;
1661}
1662
1663static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1664{
1665 struct hid_report *report;
1666 int i;
1667
1668 list_for_each_entry(report,
1669 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1670 list) {
1671
1672 if (!report->maxfield)
1673 continue;
1674
1675 for (i = 0; i < report->maxfield; i++)
1676 if (report->field[i]->maxusage >= 1)
1677 mt_fix_const_field(report->field[i], usage);
1678 }
1679}
1680
1681static void mt_release_contacts(struct hid_device *hid)
1682{
1683 struct hid_input *hidinput;
1684 struct mt_application *application;
1685 struct mt_device *td = hid_get_drvdata(hid);
1686
1687 list_for_each_entry(hidinput, &hid->inputs, list) {
1688 struct input_dev *input_dev = hidinput->input;
1689 struct input_mt *mt = input_dev->mt;
1690 int i;
1691
1692 if (mt) {
1693 for (i = 0; i < mt->num_slots; i++) {
1694 input_mt_slot(input_dev, i);
1695 input_mt_report_slot_inactive(input_dev);
1696 }
1697 input_mt_sync_frame(input_dev);
1698 input_sync(input_dev);
1699 }
1700 }
1701
1702 list_for_each_entry(application, &td->applications, list) {
1703 application->num_received = 0;
1704 }
1705}
1706
1707static void mt_expired_timeout(struct timer_list *t)
1708{
1709 struct mt_device *td = from_timer(td, t, release_timer);
1710 struct hid_device *hdev = td->hdev;
1711
1712 /*
1713 * An input report came in just before we release the sticky fingers,
1714 * it will take care of the sticky fingers.
1715 */
1716 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1717 return;
1718 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1719 mt_release_contacts(hdev);
1720 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1721}
1722
1723static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1724{
1725 int ret, i;
1726 struct mt_device *td;
1727 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1728
1729 for (i = 0; mt_classes[i].name ; i++) {
1730 if (id->driver_data == mt_classes[i].name) {
1731 mtclass = &(mt_classes[i]);
1732 break;
1733 }
1734 }
1735
1736 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1737 if (!td) {
1738 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1739 return -ENOMEM;
1740 }
1741 td->hdev = hdev;
1742 td->mtclass = *mtclass;
1743 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1744 hid_set_drvdata(hdev, td);
1745
1746 INIT_LIST_HEAD(&td->applications);
1747 INIT_LIST_HEAD(&td->reports);
1748
1749 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1750 td->serial_maybe = true;
1751
1752
1753 /* Orientation is inverted if the X or Y axes are
1754 * flipped, but normalized if both are inverted.
1755 */
1756 if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) &&
1757 !((hdev->quirks & HID_QUIRK_X_INVERT)
1758 && (hdev->quirks & HID_QUIRK_Y_INVERT)))
1759 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT;
1760
1761 /* This allows the driver to correctly support devices
1762 * that emit events over several HID messages.
1763 */
1764 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1765
1766 /*
1767 * This allows the driver to handle different input sensors
1768 * that emits events through different applications on the same HID
1769 * device.
1770 */
1771 hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
1772
1773 if (id->group != HID_GROUP_MULTITOUCH_WIN_8)
1774 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1775
1776 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) {
1777 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP;
1778 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1779 }
1780
1781 timer_setup(&td->release_timer, mt_expired_timeout, 0);
1782
1783 ret = hid_parse(hdev);
1784 if (ret != 0)
1785 return ret;
1786
1787 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1788 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1789
1790 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1791 if (ret)
1792 return ret;
1793
1794 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1795 if (ret)
1796 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1797 hdev->name);
1798
1799 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
1800
1801 return 0;
1802}
1803
1804static int mt_suspend(struct hid_device *hdev, pm_message_t state)
1805{
1806 struct mt_device *td = hid_get_drvdata(hdev);
1807
1808 /* High latency is desirable for power savings during S3/S0ix */
1809 if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) ||
1810 !hid_hw_may_wakeup(hdev))
1811 mt_set_modes(hdev, HID_LATENCY_HIGH, false, false);
1812 else
1813 mt_set_modes(hdev, HID_LATENCY_HIGH, true, true);
1814
1815 return 0;
1816}
1817
1818static int mt_reset_resume(struct hid_device *hdev)
1819{
1820 mt_release_contacts(hdev);
1821 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
1822 return 0;
1823}
1824
1825static int mt_resume(struct hid_device *hdev)
1826{
1827 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1828 * It should be safe to send it to other devices too.
1829 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1830
1831 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1832
1833 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
1834
1835 return 0;
1836}
1837
1838static void mt_remove(struct hid_device *hdev)
1839{
1840 struct mt_device *td = hid_get_drvdata(hdev);
1841
1842 del_timer_sync(&td->release_timer);
1843
1844 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1845 hid_hw_stop(hdev);
1846}
1847
1848/*
1849 * This list contains only:
1850 * - VID/PID of products not working with the default multitouch handling
1851 * - 2 generic rules.
1852 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1853 */
1854static const struct hid_device_id mt_devices[] = {
1855
1856 /* 3M panels */
1857 { .driver_data = MT_CLS_3M,
1858 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1859 USB_DEVICE_ID_3M1968) },
1860 { .driver_data = MT_CLS_3M,
1861 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1862 USB_DEVICE_ID_3M2256) },
1863 { .driver_data = MT_CLS_3M,
1864 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1865 USB_DEVICE_ID_3M3266) },
1866
1867 /* Anton devices */
1868 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1869 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1870 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1871
1872 /* Asus T101HA */
1873 { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP,
1874 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1875 USB_VENDOR_ID_ASUSTEK,
1876 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) },
1877
1878 /* Asus T304UA */
1879 { .driver_data = MT_CLS_ASUS,
1880 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1881 USB_VENDOR_ID_ASUSTEK,
1882 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
1883
1884 /* Atmel panels */
1885 { .driver_data = MT_CLS_SERIAL,
1886 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1887 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1888
1889 /* Baanto multitouch devices */
1890 { .driver_data = MT_CLS_NSMU,
1891 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1892 USB_DEVICE_ID_BAANTO_MT_190W2) },
1893
1894 /* Cando panels */
1895 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1896 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1897 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1898 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1899 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1900 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1901
1902 /* Chunghwa Telecom touch panels */
1903 { .driver_data = MT_CLS_NSMU,
1904 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1905 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1906
1907 /* CJTouch panels */
1908 { .driver_data = MT_CLS_NSMU,
1909 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1910 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1911 { .driver_data = MT_CLS_NSMU,
1912 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1913 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1914
1915 /* CVTouch panels */
1916 { .driver_data = MT_CLS_NSMU,
1917 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1918 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1919
1920 /* eGalax devices (SAW) */
1921 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1922 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1923 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) },
1924
1925 /* eGalax devices (resistive) */
1926 { .driver_data = MT_CLS_EGALAX,
1927 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1928 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1929 { .driver_data = MT_CLS_EGALAX,
1930 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1931 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1932
1933 /* eGalax devices (capacitive) */
1934 { .driver_data = MT_CLS_EGALAX_SERIAL,
1935 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1936 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1937 { .driver_data = MT_CLS_EGALAX,
1938 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1939 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1940 { .driver_data = MT_CLS_EGALAX_SERIAL,
1941 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1942 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1943 { .driver_data = MT_CLS_EGALAX_SERIAL,
1944 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1945 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1946 { .driver_data = MT_CLS_EGALAX_SERIAL,
1947 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1948 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1949 { .driver_data = MT_CLS_EGALAX_SERIAL,
1950 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1951 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1952 { .driver_data = MT_CLS_EGALAX,
1953 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1954 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1955 { .driver_data = MT_CLS_EGALAX,
1956 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1957 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1958 { .driver_data = MT_CLS_EGALAX_SERIAL,
1959 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1960 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1961 { .driver_data = MT_CLS_EGALAX,
1962 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1963 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1964 { .driver_data = MT_CLS_EGALAX,
1965 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1966 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1967 { .driver_data = MT_CLS_EGALAX,
1968 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1969 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1970 { .driver_data = MT_CLS_EGALAX,
1971 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1972 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1973 { .driver_data = MT_CLS_EGALAX_SERIAL,
1974 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1975 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1976 { .driver_data = MT_CLS_EGALAX_SERIAL,
1977 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1978 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1979 { .driver_data = MT_CLS_EGALAX_SERIAL,
1980 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1981 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1982 { .driver_data = MT_CLS_EGALAX,
1983 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1984 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) },
1985
1986 /* Elan devices */
1987 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
1988 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1989 USB_VENDOR_ID_ELAN, 0x313a) },
1990
1991 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
1992 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1993 USB_VENDOR_ID_ELAN, 0x3148) },
1994
1995 /* Elitegroup panel */
1996 { .driver_data = MT_CLS_SERIAL,
1997 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1998 USB_DEVICE_ID_ELITEGROUP_05D8) },
1999
2000 /* Flatfrog Panels */
2001 { .driver_data = MT_CLS_FLATFROG,
2002 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
2003 USB_DEVICE_ID_MULTITOUCH_3200) },
2004
2005 /* FocalTech Panels */
2006 { .driver_data = MT_CLS_SERIAL,
2007 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
2008 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
2009
2010 /* GeneralTouch panel */
2011 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
2012 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2013 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
2014 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2015 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2016 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
2017 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
2018 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2019 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
2020 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2021 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2022 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
2023 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2024 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2025 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
2026 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2027 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2028 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
2029 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2030 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2031 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
2032
2033 /* Gametel game controller */
2034 { .driver_data = MT_CLS_NSMU,
2035 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
2036 USB_DEVICE_ID_GAMETEL_MT_MODE) },
2037
2038 /* GoodTouch panels */
2039 { .driver_data = MT_CLS_NSMU,
2040 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
2041 USB_DEVICE_ID_GOODTOUCH_000f) },
2042
2043 /* Hanvon panels */
2044 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
2045 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
2046 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
2047
2048 /* HONOR GLO-GXXX panel */
2049 { .driver_data = MT_CLS_VTL,
2050 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2051 0x347d, 0x7853) },
2052
2053 /* Ilitek dual touch panel */
2054 { .driver_data = MT_CLS_NSMU,
2055 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
2056 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
2057
2058 /* LG Melfas panel */
2059 { .driver_data = MT_CLS_LG,
2060 HID_USB_DEVICE(USB_VENDOR_ID_LG,
2061 USB_DEVICE_ID_LG_MELFAS_MT) },
2062 { .driver_data = MT_CLS_LG,
2063 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC,
2064 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) },
2065
2066 /* Lenovo X1 TAB Gen 2 */
2067 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2068 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2069 USB_VENDOR_ID_LENOVO,
2070 USB_DEVICE_ID_LENOVO_X1_TAB) },
2071
2072 /* Lenovo X1 TAB Gen 3 */
2073 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2074 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2075 USB_VENDOR_ID_LENOVO,
2076 USB_DEVICE_ID_LENOVO_X1_TAB3) },
2077
2078 /* Lenovo X12 TAB Gen 1 */
2079 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
2080 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2081 USB_VENDOR_ID_LENOVO,
2082 USB_DEVICE_ID_LENOVO_X12_TAB) },
2083
2084 /* MosArt panels */
2085 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2086 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
2087 USB_DEVICE_ID_ASUS_T91MT)},
2088 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2089 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
2090 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
2091 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2092 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
2093 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
2094
2095 /* Novatek Panel */
2096 { .driver_data = MT_CLS_NSMU,
2097 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
2098 USB_DEVICE_ID_NOVATEK_PCT) },
2099
2100 /* Ntrig Panel */
2101 { .driver_data = MT_CLS_NSMU,
2102 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2103 USB_VENDOR_ID_NTRIG, 0x1b05) },
2104
2105 /* Panasonic panels */
2106 { .driver_data = MT_CLS_PANASONIC,
2107 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
2108 USB_DEVICE_ID_PANABOARD_UBT780) },
2109 { .driver_data = MT_CLS_PANASONIC,
2110 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
2111 USB_DEVICE_ID_PANABOARD_UBT880) },
2112
2113 /* PixArt optical touch screen */
2114 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2115 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2116 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
2117 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2118 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2119 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
2120 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2121 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2122 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
2123
2124 /* PixCir-based panels */
2125 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
2126 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
2127 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
2128
2129 /* Quanta-based panels */
2130 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
2131 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
2132 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
2133
2134 /* Razer touchpads */
2135 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH,
2136 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2137 USB_VENDOR_ID_SYNAPTICS, 0x8323) },
2138
2139 /* Smart Tech panels */
2140 { .driver_data = MT_CLS_SMART_TECH,
2141 MT_USB_DEVICE(0x0b8c, 0x0092)},
2142
2143 /* Stantum panels */
2144 { .driver_data = MT_CLS_CONFIDENCE,
2145 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
2146 USB_DEVICE_ID_MTP_STM)},
2147
2148 /* Synaptics devices */
2149 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2150 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2151 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) },
2152
2153 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2154 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2155 USB_VENDOR_ID_SYNAPTICS, 0xcddc) },
2156
2157 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2158 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2159 USB_VENDOR_ID_SYNAPTICS, 0xce08) },
2160
2161 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2162 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2163 USB_VENDOR_ID_SYNAPTICS, 0xce09) },
2164
2165 /* TopSeed panels */
2166 { .driver_data = MT_CLS_TOPSEED,
2167 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
2168 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
2169
2170 /* Touch International panels */
2171 { .driver_data = MT_CLS_NSMU,
2172 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
2173 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
2174
2175 /* Unitec panels */
2176 { .driver_data = MT_CLS_NSMU,
2177 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2178 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
2179 { .driver_data = MT_CLS_NSMU,
2180 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2181 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
2182
2183 /* VTL panels */
2184 { .driver_data = MT_CLS_VTL,
2185 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
2186 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
2187
2188 /* Winbond Electronics Corp. */
2189 { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS,
2190 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
2191 USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) },
2192
2193 /* Wistron panels */
2194 { .driver_data = MT_CLS_NSMU,
2195 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
2196 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
2197
2198 /* XAT */
2199 { .driver_data = MT_CLS_NSMU,
2200 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
2201 USB_DEVICE_ID_XAT_CSR) },
2202
2203 /* Xiroku */
2204 { .driver_data = MT_CLS_NSMU,
2205 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2206 USB_DEVICE_ID_XIROKU_SPX) },
2207 { .driver_data = MT_CLS_NSMU,
2208 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2209 USB_DEVICE_ID_XIROKU_MPX) },
2210 { .driver_data = MT_CLS_NSMU,
2211 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2212 USB_DEVICE_ID_XIROKU_CSR) },
2213 { .driver_data = MT_CLS_NSMU,
2214 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2215 USB_DEVICE_ID_XIROKU_SPX1) },
2216 { .driver_data = MT_CLS_NSMU,
2217 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2218 USB_DEVICE_ID_XIROKU_MPX1) },
2219 { .driver_data = MT_CLS_NSMU,
2220 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2221 USB_DEVICE_ID_XIROKU_CSR1) },
2222 { .driver_data = MT_CLS_NSMU,
2223 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2224 USB_DEVICE_ID_XIROKU_SPX2) },
2225 { .driver_data = MT_CLS_NSMU,
2226 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2227 USB_DEVICE_ID_XIROKU_MPX2) },
2228 { .driver_data = MT_CLS_NSMU,
2229 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2230 USB_DEVICE_ID_XIROKU_CSR2) },
2231
2232 /* Google MT devices */
2233 { .driver_data = MT_CLS_GOOGLE,
2234 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
2235 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
2236 { .driver_data = MT_CLS_GOOGLE,
2237 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE,
2238 USB_DEVICE_ID_GOOGLE_WHISKERS) },
2239
2240 /* Generic MT device */
2241 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
2242
2243 /* Generic Win 8 certified MT device */
2244 { .driver_data = MT_CLS_WIN_8,
2245 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
2246 HID_ANY_ID, HID_ANY_ID) },
2247 { }
2248};
2249MODULE_DEVICE_TABLE(hid, mt_devices);
2250
2251static const struct hid_usage_id mt_grabbed_usages[] = {
2252 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
2253 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
2254};
2255
2256static struct hid_driver mt_driver = {
2257 .name = "hid-multitouch",
2258 .id_table = mt_devices,
2259 .probe = mt_probe,
2260 .remove = mt_remove,
2261 .input_mapping = mt_input_mapping,
2262 .input_mapped = mt_input_mapped,
2263 .input_configured = mt_input_configured,
2264 .feature_mapping = mt_feature_mapping,
2265 .usage_table = mt_grabbed_usages,
2266 .event = mt_event,
2267 .report = mt_report,
2268 .suspend = pm_ptr(mt_suspend),
2269 .reset_resume = pm_ptr(mt_reset_resume),
2270 .resume = pm_ptr(mt_resume),
2271};
2272module_hid_driver(mt_driver);