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Revert "HID: multitouch: Support ALPS PTP stick with pid 0x120A"
[mirror_ubuntu-bionic-kernel.git] / drivers / hid / hid-multitouch.c
1 /*
2 * HID driver for multitouch panels
3 *
4 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
5 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
6 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
7 * Copyright (c) 2012-2013 Red Hat, Inc
8 *
9 * This code is partly based on hid-egalax.c:
10 *
11 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
12 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
13 * Copyright (c) 2010 Canonical, Ltd.
14 *
15 * This code is partly based on hid-3m-pct.c:
16 *
17 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
18 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
19 * Copyright (c) 2010 Canonical, Ltd.
20 *
21 */
22
23 /*
24 * This program is free software; you can redistribute it and/or modify it
25 * under the terms of the GNU General Public License as published by the Free
26 * Software Foundation; either version 2 of the License, or (at your option)
27 * any later version.
28 */
29
30 /*
31 * This driver is regularly tested thanks to the tool hid-test[1].
32 * This tool relies on hid-replay[2] and a database of hid devices[3].
33 * Please run these regression tests before patching this module so that
34 * your patch won't break existing known devices.
35 *
36 * [1] https://github.com/bentiss/hid-test
37 * [2] https://github.com/bentiss/hid-replay
38 * [3] https://github.com/bentiss/hid-devices
39 */
40
41 #include <linux/device.h>
42 #include <linux/hid.h>
43 #include <linux/module.h>
44 #include <linux/slab.h>
45 #include <linux/input/mt.h>
46 #include <linux/jiffies.h>
47 #include <linux/string.h>
48 #include <linux/timer.h>
49
50
51 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
52 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
53 MODULE_DESCRIPTION("HID multitouch panels");
54 MODULE_LICENSE("GPL");
55
56 #include "hid-ids.h"
57
58 /* quirks to control the device */
59 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0)
60 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1)
61 #define MT_QUIRK_CYPRESS BIT(2)
62 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3)
63 #define MT_QUIRK_ALWAYS_VALID BIT(4)
64 #define MT_QUIRK_VALID_IS_INRANGE BIT(5)
65 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6)
66 #define MT_QUIRK_CONFIDENCE BIT(7)
67 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8)
68 #define MT_QUIRK_NO_AREA BIT(9)
69 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10)
70 #define MT_QUIRK_HOVERING BIT(11)
71 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12)
72 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13)
73 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14)
74 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15)
75 #define MT_QUIRK_STICKY_FINGERS BIT(16)
76 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17)
77
78 #define MT_INPUTMODE_TOUCHSCREEN 0x02
79 #define MT_INPUTMODE_TOUCHPAD 0x03
80
81 #define MT_BUTTONTYPE_CLICKPAD 0
82
83 #define MT_IO_FLAGS_RUNNING 0
84 #define MT_IO_FLAGS_ACTIVE_SLOTS 1
85 #define MT_IO_FLAGS_PENDING_SLOTS 2
86
87 struct mt_slot {
88 __s32 x, y, cx, cy, p, w, h;
89 __s32 contactid; /* the device ContactID assigned to this slot */
90 bool touch_state; /* is the touch valid? */
91 bool inrange_state; /* is the finger in proximity of the sensor? */
92 bool confidence_state; /* is the touch made by a finger? */
93 };
94
95 struct mt_class {
96 __s32 name; /* MT_CLS */
97 __s32 quirks;
98 __s32 sn_move; /* Signal/noise ratio for move events */
99 __s32 sn_width; /* Signal/noise ratio for width events */
100 __s32 sn_height; /* Signal/noise ratio for height events */
101 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
102 __u8 maxcontacts;
103 bool is_indirect; /* true for touchpads */
104 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
105 };
106
107 struct mt_fields {
108 unsigned usages[HID_MAX_FIELDS];
109 unsigned int length;
110 };
111
112 struct mt_device {
113 struct mt_slot curdata; /* placeholder of incoming data */
114 struct mt_class mtclass; /* our mt device class */
115 struct timer_list release_timer; /* to release sticky fingers */
116 struct hid_device *hdev; /* hid_device we're attached to */
117 struct mt_fields *fields; /* temporary placeholder for storing the
118 multitouch fields */
119 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */
120 int cc_index; /* contact count field index in the report */
121 int cc_value_index; /* contact count value index in the field */
122 unsigned last_slot_field; /* the last field of a slot */
123 unsigned mt_report_id; /* the report ID of the multitouch device */
124 unsigned long initial_quirks; /* initial quirks state */
125 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */
126 __s16 inputmode_index; /* InputMode HID feature index in the report */
127 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature,
128 -1 if non-existent */
129 __u8 inputmode_value; /* InputMode HID feature value */
130 __u8 num_received; /* how many contacts we received */
131 __u8 num_expected; /* expected last contact index */
132 __u8 maxcontacts;
133 __u8 touches_by_report; /* how many touches are present in one report:
134 * 1 means we should use a serial protocol
135 * > 1 means hybrid (multitouch) protocol */
136 __u8 buttons_count; /* number of physical buttons per touchpad */
137 bool is_buttonpad; /* is this device a button pad? */
138 bool serial_maybe; /* need to check for serial protocol */
139 bool curvalid; /* is the current contact valid? */
140 unsigned mt_flags; /* flags to pass to input-mt */
141 __s32 dev_time; /* the scan time provided by the device */
142 unsigned long jiffies; /* the frame's jiffies */
143 int timestamp; /* the timestamp to be sent */
144 };
145
146 static void mt_post_parse_default_settings(struct mt_device *td);
147 static void mt_post_parse(struct mt_device *td);
148
149 /* classes of device behavior */
150 #define MT_CLS_DEFAULT 0x0001
151
152 #define MT_CLS_SERIAL 0x0002
153 #define MT_CLS_CONFIDENCE 0x0003
154 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
155 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
156 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
157 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
158 /* reserved 0x0008 */
159 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
160 #define MT_CLS_NSMU 0x000a
161 /* reserved 0x0010 */
162 /* reserved 0x0011 */
163 #define MT_CLS_WIN_8 0x0012
164 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
165 #define MT_CLS_WIN_8_DUAL 0x0014
166
167 /* vendor specific classes */
168 #define MT_CLS_3M 0x0101
169 /* reserved 0x0102 */
170 #define MT_CLS_EGALAX 0x0103
171 #define MT_CLS_EGALAX_SERIAL 0x0104
172 #define MT_CLS_TOPSEED 0x0105
173 #define MT_CLS_PANASONIC 0x0106
174 #define MT_CLS_FLATFROG 0x0107
175 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
176 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
177 #define MT_CLS_LG 0x010a
178 #define MT_CLS_ASUS 0x010b
179 #define MT_CLS_VTL 0x0110
180 #define MT_CLS_GOOGLE 0x0111
181
182 #define MT_DEFAULT_MAXCONTACT 10
183 #define MT_MAX_MAXCONTACT 250
184
185 /*
186 * Resync device and local timestamps after that many microseconds without
187 * receiving data.
188 */
189 #define MAX_TIMESTAMP_INTERVAL 1000000
190
191 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
192 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
193
194 /*
195 * these device-dependent functions determine what slot corresponds
196 * to a valid contact that was just read.
197 */
198
199 static int cypress_compute_slot(struct mt_device *td)
200 {
201 if (td->curdata.contactid != 0 || td->num_received == 0)
202 return td->curdata.contactid;
203 else
204 return -1;
205 }
206
207 static struct mt_class mt_classes[] = {
208 { .name = MT_CLS_DEFAULT,
209 .quirks = MT_QUIRK_ALWAYS_VALID |
210 MT_QUIRK_CONTACT_CNT_ACCURATE },
211 { .name = MT_CLS_NSMU,
212 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
213 { .name = MT_CLS_SERIAL,
214 .quirks = MT_QUIRK_ALWAYS_VALID},
215 { .name = MT_CLS_CONFIDENCE,
216 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
217 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
218 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
219 MT_QUIRK_SLOT_IS_CONTACTID },
220 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
221 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
222 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
223 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
224 .quirks = MT_QUIRK_VALID_IS_INRANGE |
225 MT_QUIRK_SLOT_IS_CONTACTID,
226 .maxcontacts = 2 },
227 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
228 .quirks = MT_QUIRK_VALID_IS_INRANGE |
229 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
230 .maxcontacts = 2 },
231 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
232 .quirks = MT_QUIRK_VALID_IS_INRANGE |
233 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
234 { .name = MT_CLS_WIN_8,
235 .quirks = MT_QUIRK_ALWAYS_VALID |
236 MT_QUIRK_IGNORE_DUPLICATES |
237 MT_QUIRK_HOVERING |
238 MT_QUIRK_CONTACT_CNT_ACCURATE |
239 MT_QUIRK_STICKY_FINGERS },
240 { .name = MT_CLS_EXPORT_ALL_INPUTS,
241 .quirks = MT_QUIRK_ALWAYS_VALID |
242 MT_QUIRK_CONTACT_CNT_ACCURATE,
243 .export_all_inputs = true },
244 { .name = MT_CLS_WIN_8_DUAL,
245 .quirks = MT_QUIRK_ALWAYS_VALID |
246 MT_QUIRK_IGNORE_DUPLICATES |
247 MT_QUIRK_HOVERING |
248 MT_QUIRK_CONTACT_CNT_ACCURATE,
249 .export_all_inputs = true },
250
251 /*
252 * vendor specific classes
253 */
254 { .name = MT_CLS_3M,
255 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
256 MT_QUIRK_SLOT_IS_CONTACTID |
257 MT_QUIRK_TOUCH_SIZE_SCALING,
258 .sn_move = 2048,
259 .sn_width = 128,
260 .sn_height = 128,
261 .maxcontacts = 60,
262 },
263 { .name = MT_CLS_EGALAX,
264 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
265 MT_QUIRK_VALID_IS_INRANGE,
266 .sn_move = 4096,
267 .sn_pressure = 32,
268 },
269 { .name = MT_CLS_EGALAX_SERIAL,
270 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
271 MT_QUIRK_ALWAYS_VALID,
272 .sn_move = 4096,
273 .sn_pressure = 32,
274 },
275 { .name = MT_CLS_TOPSEED,
276 .quirks = MT_QUIRK_ALWAYS_VALID,
277 .is_indirect = true,
278 .maxcontacts = 2,
279 },
280 { .name = MT_CLS_PANASONIC,
281 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
282 .maxcontacts = 4 },
283 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
284 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
285 MT_QUIRK_VALID_IS_INRANGE |
286 MT_QUIRK_SLOT_IS_CONTACTID,
287 .maxcontacts = 2
288 },
289 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
290 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
291 MT_QUIRK_SLOT_IS_CONTACTID
292 },
293
294 { .name = MT_CLS_FLATFROG,
295 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
296 MT_QUIRK_NO_AREA,
297 .sn_move = 2048,
298 .maxcontacts = 40,
299 },
300 { .name = MT_CLS_LG,
301 .quirks = MT_QUIRK_ALWAYS_VALID |
302 MT_QUIRK_FIX_CONST_CONTACT_ID |
303 MT_QUIRK_IGNORE_DUPLICATES |
304 MT_QUIRK_HOVERING |
305 MT_QUIRK_CONTACT_CNT_ACCURATE },
306 { .name = MT_CLS_ASUS,
307 .quirks = MT_QUIRK_ALWAYS_VALID |
308 MT_QUIRK_CONTACT_CNT_ACCURATE |
309 MT_QUIRK_ASUS_CUSTOM_UP },
310 { .name = MT_CLS_VTL,
311 .quirks = MT_QUIRK_ALWAYS_VALID |
312 MT_QUIRK_CONTACT_CNT_ACCURATE |
313 MT_QUIRK_FORCE_GET_FEATURE,
314 },
315 { .name = MT_CLS_GOOGLE,
316 .quirks = MT_QUIRK_ALWAYS_VALID |
317 MT_QUIRK_CONTACT_CNT_ACCURATE |
318 MT_QUIRK_SLOT_IS_CONTACTID |
319 MT_QUIRK_HOVERING
320 },
321 { }
322 };
323
324 static ssize_t mt_show_quirks(struct device *dev,
325 struct device_attribute *attr,
326 char *buf)
327 {
328 struct hid_device *hdev = to_hid_device(dev);
329 struct mt_device *td = hid_get_drvdata(hdev);
330
331 return sprintf(buf, "%u\n", td->mtclass.quirks);
332 }
333
334 static ssize_t mt_set_quirks(struct device *dev,
335 struct device_attribute *attr,
336 const char *buf, size_t count)
337 {
338 struct hid_device *hdev = to_hid_device(dev);
339 struct mt_device *td = hid_get_drvdata(hdev);
340
341 unsigned long val;
342
343 if (kstrtoul(buf, 0, &val))
344 return -EINVAL;
345
346 td->mtclass.quirks = val;
347
348 if (td->cc_index < 0)
349 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
350
351 return count;
352 }
353
354 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
355
356 static struct attribute *sysfs_attrs[] = {
357 &dev_attr_quirks.attr,
358 NULL
359 };
360
361 static const struct attribute_group mt_attribute_group = {
362 .attrs = sysfs_attrs
363 };
364
365 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
366 {
367 struct mt_device *td = hid_get_drvdata(hdev);
368 int ret;
369 u32 size = hid_report_len(report);
370 u8 *buf;
371
372 /*
373 * Do not fetch the feature report if the device has been explicitly
374 * marked as non-capable.
375 */
376 if (td->initial_quirks & HID_QUIRK_NO_INIT_REPORTS)
377 return;
378
379 buf = hid_alloc_report_buf(report, GFP_KERNEL);
380 if (!buf)
381 return;
382
383 ret = hid_hw_raw_request(hdev, report->id, buf, size,
384 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
385 if (ret < 0) {
386 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
387 report->id);
388 } else {
389 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
390 size, 0);
391 if (ret)
392 dev_warn(&hdev->dev, "failed to report feature\n");
393 }
394
395 kfree(buf);
396 }
397
398 static void mt_feature_mapping(struct hid_device *hdev,
399 struct hid_field *field, struct hid_usage *usage)
400 {
401 struct mt_device *td = hid_get_drvdata(hdev);
402
403 switch (usage->hid) {
404 case HID_DG_INPUTMODE:
405 /* Ignore if value index is out of bounds. */
406 if (usage->usage_index >= field->report_count) {
407 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
408 break;
409 }
410
411 if (td->inputmode < 0) {
412 td->inputmode = field->report->id;
413 td->inputmode_index = usage->usage_index;
414 } else {
415 /*
416 * Some elan panels wrongly declare 2 input mode
417 * features, and silently ignore when we set the
418 * value in the second field. Skip the second feature
419 * and hope for the best.
420 */
421 dev_info(&hdev->dev,
422 "Ignoring the extra HID_DG_INPUTMODE\n");
423 }
424
425 break;
426 case HID_DG_CONTACTMAX:
427 mt_get_feature(hdev, field->report);
428
429 td->maxcontact_report_id = field->report->id;
430 td->maxcontacts = field->value[0];
431 if (!td->maxcontacts &&
432 field->logical_maximum <= MT_MAX_MAXCONTACT)
433 td->maxcontacts = field->logical_maximum;
434 if (td->mtclass.maxcontacts)
435 /* check if the maxcontacts is given by the class */
436 td->maxcontacts = td->mtclass.maxcontacts;
437
438 break;
439 case HID_DG_BUTTONTYPE:
440 if (usage->usage_index >= field->report_count) {
441 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
442 break;
443 }
444
445 mt_get_feature(hdev, field->report);
446 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
447 td->is_buttonpad = true;
448
449 break;
450 case 0xff0000c5:
451 /* Retrieve the Win8 blob once to enable some devices */
452 if (usage->usage_index == 0)
453 mt_get_feature(hdev, field->report);
454 break;
455 }
456 }
457
458 static void set_abs(struct input_dev *input, unsigned int code,
459 struct hid_field *field, int snratio)
460 {
461 int fmin = field->logical_minimum;
462 int fmax = field->logical_maximum;
463 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
464 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
465 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
466 }
467
468 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
469 struct hid_input *hi)
470 {
471 struct mt_fields *f = td->fields;
472
473 if (f->length >= HID_MAX_FIELDS)
474 return;
475
476 f->usages[f->length++] = usage->hid;
477 }
478
479 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
480 struct hid_field *field, struct hid_usage *usage,
481 unsigned long **bit, int *max)
482 {
483 struct mt_device *td = hid_get_drvdata(hdev);
484 struct mt_class *cls = &td->mtclass;
485 int code;
486 struct hid_usage *prev_usage = NULL;
487
488 if (field->application == HID_DG_TOUCHSCREEN)
489 td->mt_flags |= INPUT_MT_DIRECT;
490
491 /*
492 * Model touchscreens providing buttons as touchpads.
493 */
494 if (field->application == HID_DG_TOUCHPAD ||
495 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
496 td->mt_flags |= INPUT_MT_POINTER;
497 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
498 }
499
500 /* count the buttons on touchpads */
501 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
502 td->buttons_count++;
503
504 if (usage->usage_index)
505 prev_usage = &field->usage[usage->usage_index - 1];
506
507 switch (usage->hid & HID_USAGE_PAGE) {
508
509 case HID_UP_GENDESK:
510 switch (usage->hid) {
511 case HID_GD_X:
512 if (prev_usage && (prev_usage->hid == usage->hid)) {
513 hid_map_usage(hi, usage, bit, max,
514 EV_ABS, ABS_MT_TOOL_X);
515 set_abs(hi->input, ABS_MT_TOOL_X, field,
516 cls->sn_move);
517 } else {
518 hid_map_usage(hi, usage, bit, max,
519 EV_ABS, ABS_MT_POSITION_X);
520 set_abs(hi->input, ABS_MT_POSITION_X, field,
521 cls->sn_move);
522 }
523
524 mt_store_field(usage, td, hi);
525 return 1;
526 case HID_GD_Y:
527 if (prev_usage && (prev_usage->hid == usage->hid)) {
528 hid_map_usage(hi, usage, bit, max,
529 EV_ABS, ABS_MT_TOOL_Y);
530 set_abs(hi->input, ABS_MT_TOOL_Y, field,
531 cls->sn_move);
532 } else {
533 hid_map_usage(hi, usage, bit, max,
534 EV_ABS, ABS_MT_POSITION_Y);
535 set_abs(hi->input, ABS_MT_POSITION_Y, field,
536 cls->sn_move);
537 }
538
539 mt_store_field(usage, td, hi);
540 return 1;
541 }
542 return 0;
543
544 case HID_UP_DIGITIZER:
545 switch (usage->hid) {
546 case HID_DG_INRANGE:
547 if (cls->quirks & MT_QUIRK_HOVERING) {
548 hid_map_usage(hi, usage, bit, max,
549 EV_ABS, ABS_MT_DISTANCE);
550 input_set_abs_params(hi->input,
551 ABS_MT_DISTANCE, 0, 1, 0, 0);
552 }
553 mt_store_field(usage, td, hi);
554 return 1;
555 case HID_DG_CONFIDENCE:
556 if ((cls->name == MT_CLS_WIN_8 ||
557 cls->name == MT_CLS_WIN_8_DUAL) &&
558 field->application == HID_DG_TOUCHPAD)
559 cls->quirks |= MT_QUIRK_CONFIDENCE;
560 mt_store_field(usage, td, hi);
561 return 1;
562 case HID_DG_TIPSWITCH:
563 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
564 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
565 mt_store_field(usage, td, hi);
566 return 1;
567 case HID_DG_CONTACTID:
568 mt_store_field(usage, td, hi);
569 td->touches_by_report++;
570 td->mt_report_id = field->report->id;
571 return 1;
572 case HID_DG_WIDTH:
573 hid_map_usage(hi, usage, bit, max,
574 EV_ABS, ABS_MT_TOUCH_MAJOR);
575 if (!(cls->quirks & MT_QUIRK_NO_AREA))
576 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
577 cls->sn_width);
578 mt_store_field(usage, td, hi);
579 return 1;
580 case HID_DG_HEIGHT:
581 hid_map_usage(hi, usage, bit, max,
582 EV_ABS, ABS_MT_TOUCH_MINOR);
583 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
584 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
585 cls->sn_height);
586 input_set_abs_params(hi->input,
587 ABS_MT_ORIENTATION, 0, 1, 0, 0);
588 }
589 mt_store_field(usage, td, hi);
590 return 1;
591 case HID_DG_TIPPRESSURE:
592 hid_map_usage(hi, usage, bit, max,
593 EV_ABS, ABS_MT_PRESSURE);
594 set_abs(hi->input, ABS_MT_PRESSURE, field,
595 cls->sn_pressure);
596 mt_store_field(usage, td, hi);
597 return 1;
598 case HID_DG_SCANTIME:
599 hid_map_usage(hi, usage, bit, max,
600 EV_MSC, MSC_TIMESTAMP);
601 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
602 mt_store_field(usage, td, hi);
603 return 1;
604 case HID_DG_CONTACTCOUNT:
605 /* Ignore if indexes are out of bounds. */
606 if (field->index >= field->report->maxfield ||
607 usage->usage_index >= field->report_count)
608 return 1;
609 td->cc_index = field->index;
610 td->cc_value_index = usage->usage_index;
611 return 1;
612 case HID_DG_CONTACTMAX:
613 /* we don't set td->last_slot_field as contactcount and
614 * contact max are global to the report */
615 return -1;
616 case HID_DG_TOUCH:
617 /* Legacy devices use TIPSWITCH and not TOUCH.
618 * Let's just ignore this field. */
619 return -1;
620 }
621 /* let hid-input decide for the others */
622 return 0;
623
624 case HID_UP_BUTTON:
625 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
626 /*
627 * MS PTP spec says that external buttons left and right have
628 * usages 2 and 3.
629 */
630 if ((cls->name == MT_CLS_WIN_8 ||
631 cls->name == MT_CLS_WIN_8_DUAL) &&
632 field->application == HID_DG_TOUCHPAD &&
633 (usage->hid & HID_USAGE) > 1)
634 code--;
635 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
636 input_set_capability(hi->input, EV_KEY, code);
637 return 1;
638
639 case 0xff000000:
640 /* we do not want to map these: no input-oriented meaning */
641 return -1;
642 }
643
644 return 0;
645 }
646
647 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
648 {
649 __s32 quirks = td->mtclass.quirks;
650
651 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
652 return td->curdata.contactid;
653
654 if (quirks & MT_QUIRK_CYPRESS)
655 return cypress_compute_slot(td);
656
657 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
658 return td->num_received;
659
660 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
661 return td->curdata.contactid - 1;
662
663 return input_mt_get_slot_by_key(input, td->curdata.contactid);
664 }
665
666 /*
667 * this function is called when a whole contact has been processed,
668 * so that it can assign it to a slot and store the data there
669 */
670 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
671 {
672 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
673 td->num_received >= td->num_expected)
674 return;
675
676 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
677 int active;
678 int slotnum = mt_compute_slot(td, input);
679 struct mt_slot *s = &td->curdata;
680 struct input_mt *mt = input->mt;
681
682 if (slotnum < 0 || slotnum >= td->maxcontacts)
683 return;
684
685 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
686 struct input_mt_slot *slot = &mt->slots[slotnum];
687 if (input_mt_is_active(slot) &&
688 input_mt_is_used(mt, slot))
689 return;
690 }
691
692 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE))
693 s->confidence_state = 1;
694 active = (s->touch_state || s->inrange_state) &&
695 s->confidence_state;
696
697 input_mt_slot(input, slotnum);
698 input_mt_report_slot_state(input, MT_TOOL_FINGER, active);
699 if (active) {
700 /* this finger is in proximity of the sensor */
701 int wide = (s->w > s->h);
702 int major = max(s->w, s->h);
703 int minor = min(s->w, s->h);
704
705 /*
706 * divided by two to match visual scale of touch
707 * for devices with this quirk
708 */
709 if (td->mtclass.quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
710 major = major >> 1;
711 minor = minor >> 1;
712 }
713
714 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
715 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
716 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
717 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
718 input_event(input, EV_ABS, ABS_MT_DISTANCE,
719 !s->touch_state);
720 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
721 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
722 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
723 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
724
725 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
726 }
727 }
728
729 td->num_received++;
730 }
731
732 /*
733 * this function is called when a whole packet has been received and processed,
734 * so that it can decide what to send to the input layer.
735 */
736 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
737 {
738 input_mt_sync_frame(input);
739 input_event(input, EV_MSC, MSC_TIMESTAMP, td->timestamp);
740 input_sync(input);
741 td->num_received = 0;
742 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
743 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
744 else
745 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
746 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
747 }
748
749 static int mt_compute_timestamp(struct mt_device *td, struct hid_field *field,
750 __s32 value)
751 {
752 long delta = value - td->dev_time;
753 unsigned long jdelta = jiffies_to_usecs(jiffies - td->jiffies);
754
755 td->jiffies = jiffies;
756 td->dev_time = value;
757
758 if (delta < 0)
759 delta += field->logical_maximum;
760
761 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
762 delta *= 100;
763
764 if (jdelta > MAX_TIMESTAMP_INTERVAL)
765 /* No data received for a while, resync the timestamp. */
766 return 0;
767 else
768 return td->timestamp + delta;
769 }
770
771 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
772 struct hid_usage *usage, __s32 value)
773 {
774 /* we will handle the hidinput part later, now remains hiddev */
775 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
776 hid->hiddev_hid_event(hid, field, usage, value);
777
778 return 1;
779 }
780
781 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
782 struct hid_usage *usage, __s32 value,
783 bool first_packet)
784 {
785 struct mt_device *td = hid_get_drvdata(hid);
786 __s32 cls = td->mtclass.name;
787 __s32 quirks = td->mtclass.quirks;
788 struct input_dev *input = field->hidinput->input;
789
790 if (hid->claimed & HID_CLAIMED_INPUT) {
791 switch (usage->hid) {
792 case HID_DG_INRANGE:
793 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
794 td->curvalid = value;
795 if (quirks & MT_QUIRK_HOVERING)
796 td->curdata.inrange_state = value;
797 break;
798 case HID_DG_TIPSWITCH:
799 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
800 td->curvalid = value;
801 td->curdata.touch_state = value;
802 break;
803 case HID_DG_CONFIDENCE:
804 if (quirks & MT_QUIRK_CONFIDENCE)
805 td->curdata.confidence_state = value;
806 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
807 td->curvalid = value;
808 break;
809 case HID_DG_CONTACTID:
810 td->curdata.contactid = value;
811 break;
812 case HID_DG_TIPPRESSURE:
813 td->curdata.p = value;
814 break;
815 case HID_GD_X:
816 if (usage->code == ABS_MT_TOOL_X)
817 td->curdata.cx = value;
818 else
819 td->curdata.x = value;
820 break;
821 case HID_GD_Y:
822 if (usage->code == ABS_MT_TOOL_Y)
823 td->curdata.cy = value;
824 else
825 td->curdata.y = value;
826 break;
827 case HID_DG_WIDTH:
828 td->curdata.w = value;
829 break;
830 case HID_DG_HEIGHT:
831 td->curdata.h = value;
832 break;
833 case HID_DG_SCANTIME:
834 td->timestamp = mt_compute_timestamp(td, field, value);
835 break;
836 case HID_DG_CONTACTCOUNT:
837 break;
838 case HID_DG_TOUCH:
839 /* do nothing */
840 break;
841
842 default:
843 /*
844 * For Win8 PTP touchpads we should only look at
845 * non finger/touch events in the first_packet of
846 * a (possible) multi-packet frame.
847 */
848 if ((cls == MT_CLS_WIN_8 || cls == MT_CLS_WIN_8_DUAL) &&
849 !first_packet)
850 return;
851
852 if (usage->type)
853 input_event(input, usage->type, usage->code,
854 value);
855 return;
856 }
857
858 if (usage->usage_index + 1 == field->report_count) {
859 /* we only take into account the last report. */
860 if (usage->hid == td->last_slot_field)
861 mt_complete_slot(td, field->hidinput->input);
862 }
863
864 }
865 }
866
867 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
868 {
869 struct mt_device *td = hid_get_drvdata(hid);
870 struct hid_field *field;
871 bool first_packet;
872 unsigned count;
873 int r, n;
874
875 /* sticky fingers release in progress, abort */
876 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
877 return;
878
879 /*
880 * Includes multi-packet support where subsequent
881 * packets are sent with zero contactcount.
882 */
883 if (td->cc_index >= 0) {
884 struct hid_field *field = report->field[td->cc_index];
885 int value = field->value[td->cc_value_index];
886 if (value)
887 td->num_expected = value;
888 }
889
890 first_packet = td->num_received == 0;
891 for (r = 0; r < report->maxfield; r++) {
892 field = report->field[r];
893 count = field->report_count;
894
895 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
896 continue;
897
898 for (n = 0; n < count; n++)
899 mt_process_mt_event(hid, field, &field->usage[n],
900 field->value[n], first_packet);
901 }
902
903 if (td->num_received >= td->num_expected)
904 mt_sync_frame(td, report->field[0]->hidinput->input);
905
906 /*
907 * Windows 8 specs says 2 things:
908 * - once a contact has been reported, it has to be reported in each
909 * subsequent report
910 * - the report rate when fingers are present has to be at least
911 * the refresh rate of the screen, 60 or 120 Hz
912 *
913 * I interprete this that the specification forces a report rate of
914 * at least 60 Hz for a touchscreen to be certified.
915 * Which means that if we do not get a report whithin 16 ms, either
916 * something wrong happens, either the touchscreen forgets to send
917 * a release. Taking a reasonable margin allows to remove issues
918 * with USB communication or the load of the machine.
919 *
920 * Given that Win 8 devices are forced to send a release, this will
921 * only affect laggish machines and the ones that have a firmware
922 * defect.
923 */
924 if (td->mtclass.quirks & MT_QUIRK_STICKY_FINGERS) {
925 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
926 mod_timer(&td->release_timer,
927 jiffies + msecs_to_jiffies(100));
928 else
929 del_timer(&td->release_timer);
930 }
931
932 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
933 }
934
935 static int mt_touch_input_configured(struct hid_device *hdev,
936 struct hid_input *hi)
937 {
938 struct mt_device *td = hid_get_drvdata(hdev);
939 struct mt_class *cls = &td->mtclass;
940 struct input_dev *input = hi->input;
941 int ret;
942
943 if (!td->maxcontacts)
944 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
945
946 mt_post_parse(td);
947 if (td->serial_maybe)
948 mt_post_parse_default_settings(td);
949
950 if (cls->is_indirect)
951 td->mt_flags |= INPUT_MT_POINTER;
952
953 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
954 td->mt_flags |= INPUT_MT_DROP_UNUSED;
955
956 /* check for clickpads */
957 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
958 td->is_buttonpad = true;
959
960 if (td->is_buttonpad)
961 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
962
963 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
964 if (ret)
965 return ret;
966
967 td->mt_flags = 0;
968 return 0;
969 }
970
971 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
972 max, EV_KEY, (c))
973 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
974 struct hid_field *field, struct hid_usage *usage,
975 unsigned long **bit, int *max)
976 {
977 struct mt_device *td = hid_get_drvdata(hdev);
978
979 /*
980 * If mtclass.export_all_inputs is not set, only map fields from
981 * TouchScreen or TouchPad collections. We need to ignore fields
982 * that belong to other collections such as Mouse that might have
983 * the same GenericDesktop usages.
984 */
985 if (!td->mtclass.export_all_inputs &&
986 field->application != HID_DG_TOUCHSCREEN &&
987 field->application != HID_DG_PEN &&
988 field->application != HID_DG_TOUCHPAD &&
989 field->application != HID_GD_KEYBOARD &&
990 field->application != HID_GD_SYSTEM_CONTROL &&
991 field->application != HID_CP_CONSUMER_CONTROL &&
992 field->application != HID_GD_WIRELESS_RADIO_CTLS &&
993 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
994 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP))
995 return -1;
996
997 /*
998 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
999 * touchpad report descriptor. We need to treat these as an array to
1000 * map usages to input keys.
1001 */
1002 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1003 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
1004 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
1005 set_bit(EV_REP, hi->input->evbit);
1006 if (field->flags & HID_MAIN_ITEM_VARIABLE)
1007 field->flags &= ~HID_MAIN_ITEM_VARIABLE;
1008 switch (usage->hid & HID_USAGE) {
1009 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break;
1010 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break;
1011 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break;
1012 case 0x6b: mt_map_key_clear(KEY_F21); break;
1013 case 0x6c: mt_map_key_clear(KEY_SLEEP); break;
1014 default:
1015 return -1;
1016 }
1017 return 1;
1018 }
1019
1020 /*
1021 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1022 * for the stylus.
1023 * The check for mt_report_id ensures we don't process
1024 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
1025 * collection, but within the report ID.
1026 */
1027 if (field->physical == HID_DG_STYLUS)
1028 return 0;
1029 else if ((field->physical == 0) &&
1030 (field->report->id != td->mt_report_id) &&
1031 (td->mt_report_id != -1))
1032 return 0;
1033
1034 if (field->application == HID_DG_TOUCHSCREEN ||
1035 field->application == HID_DG_TOUCHPAD)
1036 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
1037
1038 /* let hid-core decide for the others */
1039 return 0;
1040 }
1041
1042 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
1043 struct hid_field *field, struct hid_usage *usage,
1044 unsigned long **bit, int *max)
1045 {
1046 /*
1047 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1048 * for the stylus.
1049 */
1050 if (field->physical == HID_DG_STYLUS)
1051 return 0;
1052
1053 if (field->application == HID_DG_TOUCHSCREEN ||
1054 field->application == HID_DG_TOUCHPAD) {
1055 /* We own these mappings, tell hid-input to ignore them */
1056 return -1;
1057 }
1058
1059 /* let hid-core decide for the others */
1060 return 0;
1061 }
1062
1063 static int mt_event(struct hid_device *hid, struct hid_field *field,
1064 struct hid_usage *usage, __s32 value)
1065 {
1066 struct mt_device *td = hid_get_drvdata(hid);
1067
1068 if (field->report->id == td->mt_report_id)
1069 return mt_touch_event(hid, field, usage, value);
1070
1071 return 0;
1072 }
1073
1074 static void mt_report(struct hid_device *hid, struct hid_report *report)
1075 {
1076 struct mt_device *td = hid_get_drvdata(hid);
1077 struct hid_field *field = report->field[0];
1078
1079 if (!(hid->claimed & HID_CLAIMED_INPUT))
1080 return;
1081
1082 if (report->id == td->mt_report_id)
1083 return mt_touch_report(hid, report);
1084
1085 if (field && field->hidinput && field->hidinput->input)
1086 input_sync(field->hidinput->input);
1087 }
1088
1089 static void mt_set_input_mode(struct hid_device *hdev)
1090 {
1091 struct mt_device *td = hid_get_drvdata(hdev);
1092 struct hid_report *r;
1093 struct hid_report_enum *re;
1094 struct mt_class *cls = &td->mtclass;
1095 char *buf;
1096 u32 report_len;
1097
1098 if (td->inputmode < 0)
1099 return;
1100
1101 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
1102 r = re->report_id_hash[td->inputmode];
1103 if (r) {
1104 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1105 report_len = hid_report_len(r);
1106 buf = hid_alloc_report_buf(r, GFP_KERNEL);
1107 if (!buf) {
1108 hid_err(hdev, "failed to allocate buffer for report\n");
1109 return;
1110 }
1111 hid_hw_raw_request(hdev, r->id, buf, report_len,
1112 HID_FEATURE_REPORT,
1113 HID_REQ_GET_REPORT);
1114 kfree(buf);
1115 }
1116 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
1117 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
1118 }
1119 }
1120
1121 static void mt_set_maxcontacts(struct hid_device *hdev)
1122 {
1123 struct mt_device *td = hid_get_drvdata(hdev);
1124 struct hid_report *r;
1125 struct hid_report_enum *re;
1126 int fieldmax, max;
1127
1128 if (td->maxcontact_report_id < 0)
1129 return;
1130
1131 if (!td->mtclass.maxcontacts)
1132 return;
1133
1134 re = &hdev->report_enum[HID_FEATURE_REPORT];
1135 r = re->report_id_hash[td->maxcontact_report_id];
1136 if (r) {
1137 max = td->mtclass.maxcontacts;
1138 fieldmax = r->field[0]->logical_maximum;
1139 max = min(fieldmax, max);
1140 if (r->field[0]->value[0] != max) {
1141 r->field[0]->value[0] = max;
1142 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
1143 }
1144 }
1145 }
1146
1147 static void mt_post_parse_default_settings(struct mt_device *td)
1148 {
1149 __s32 quirks = td->mtclass.quirks;
1150
1151 /* unknown serial device needs special quirks */
1152 if (td->touches_by_report == 1) {
1153 quirks |= MT_QUIRK_ALWAYS_VALID;
1154 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1155 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1156 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1157 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1158 }
1159
1160 td->mtclass.quirks = quirks;
1161 }
1162
1163 static void mt_post_parse(struct mt_device *td)
1164 {
1165 struct mt_fields *f = td->fields;
1166 struct mt_class *cls = &td->mtclass;
1167
1168 if (td->touches_by_report > 0) {
1169 int field_count_per_touch = f->length / td->touches_by_report;
1170 td->last_slot_field = f->usages[field_count_per_touch - 1];
1171 }
1172
1173 if (td->cc_index < 0)
1174 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1175 }
1176
1177 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1178 {
1179 struct mt_device *td = hid_get_drvdata(hdev);
1180 char *name;
1181 const char *suffix = NULL;
1182 struct hid_field *field = hi->report->field[0];
1183 int ret;
1184
1185 if (hi->report->id == td->mt_report_id) {
1186 ret = mt_touch_input_configured(hdev, hi);
1187 if (ret)
1188 return ret;
1189 }
1190
1191 /*
1192 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1193 * for the stylus. Check this first, and then rely on the application
1194 * field.
1195 */
1196 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
1197 suffix = "Pen";
1198 /* force BTN_STYLUS to allow tablet matching in udev */
1199 __set_bit(BTN_STYLUS, hi->input->keybit);
1200 } else {
1201 switch (field->application) {
1202 case HID_GD_KEYBOARD:
1203 suffix = "Keyboard";
1204 break;
1205 case HID_GD_KEYPAD:
1206 suffix = "Keypad";
1207 break;
1208 case HID_GD_MOUSE:
1209 suffix = "Mouse";
1210 break;
1211 case HID_DG_STYLUS:
1212 suffix = "Pen";
1213 /* force BTN_STYLUS to allow tablet matching in udev */
1214 __set_bit(BTN_STYLUS, hi->input->keybit);
1215 break;
1216 case HID_DG_TOUCHSCREEN:
1217 /* we do not set suffix = "Touchscreen" */
1218 break;
1219 case HID_DG_TOUCHPAD:
1220 suffix = "Touchpad";
1221 break;
1222 case HID_GD_SYSTEM_CONTROL:
1223 suffix = "System Control";
1224 break;
1225 case HID_CP_CONSUMER_CONTROL:
1226 suffix = "Consumer Control";
1227 break;
1228 case HID_GD_WIRELESS_RADIO_CTLS:
1229 suffix = "Wireless Radio Control";
1230 break;
1231 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1232 suffix = "Custom Media Keys";
1233 break;
1234 default:
1235 suffix = "UNKNOWN";
1236 break;
1237 }
1238 }
1239
1240 if (suffix) {
1241 name = devm_kzalloc(&hi->input->dev,
1242 strlen(hdev->name) + strlen(suffix) + 2,
1243 GFP_KERNEL);
1244 if (name) {
1245 sprintf(name, "%s %s", hdev->name, suffix);
1246 hi->input->name = name;
1247 }
1248 }
1249
1250 return 0;
1251 }
1252
1253 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1254 {
1255 if (field->usage[0].hid != usage ||
1256 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1257 return;
1258
1259 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1260 field->flags |= HID_MAIN_ITEM_VARIABLE;
1261 }
1262
1263 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1264 {
1265 struct hid_report *report;
1266 int i;
1267
1268 list_for_each_entry(report,
1269 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1270 list) {
1271
1272 if (!report->maxfield)
1273 continue;
1274
1275 for (i = 0; i < report->maxfield; i++)
1276 if (report->field[i]->maxusage >= 1)
1277 mt_fix_const_field(report->field[i], usage);
1278 }
1279 }
1280
1281 static void mt_release_contacts(struct hid_device *hid)
1282 {
1283 struct hid_input *hidinput;
1284 struct mt_device *td = hid_get_drvdata(hid);
1285
1286 list_for_each_entry(hidinput, &hid->inputs, list) {
1287 struct input_dev *input_dev = hidinput->input;
1288 struct input_mt *mt = input_dev->mt;
1289 int i;
1290
1291 if (mt) {
1292 for (i = 0; i < mt->num_slots; i++) {
1293 input_mt_slot(input_dev, i);
1294 input_mt_report_slot_state(input_dev,
1295 MT_TOOL_FINGER,
1296 false);
1297 }
1298 input_mt_sync_frame(input_dev);
1299 input_sync(input_dev);
1300 }
1301 }
1302
1303 td->num_received = 0;
1304 }
1305
1306 static void mt_expired_timeout(struct timer_list *t)
1307 {
1308 struct mt_device *td = from_timer(td, t, release_timer);
1309 struct hid_device *hdev = td->hdev;
1310
1311 /*
1312 * An input report came in just before we release the sticky fingers,
1313 * it will take care of the sticky fingers.
1314 */
1315 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1316 return;
1317 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1318 mt_release_contacts(hdev);
1319 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1320 }
1321
1322 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1323 {
1324 int ret, i;
1325 struct mt_device *td;
1326 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1327
1328 for (i = 0; mt_classes[i].name ; i++) {
1329 if (id->driver_data == mt_classes[i].name) {
1330 mtclass = &(mt_classes[i]);
1331 break;
1332 }
1333 }
1334
1335 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1336 if (!td) {
1337 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1338 return -ENOMEM;
1339 }
1340 td->hdev = hdev;
1341 td->mtclass = *mtclass;
1342 td->inputmode = -1;
1343 td->maxcontact_report_id = -1;
1344 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1345 td->cc_index = -1;
1346 td->mt_report_id = -1;
1347 hid_set_drvdata(hdev, td);
1348
1349 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1350 GFP_KERNEL);
1351 if (!td->fields) {
1352 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
1353 return -ENOMEM;
1354 }
1355
1356 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1357 td->serial_maybe = true;
1358
1359 /*
1360 * Store the initial quirk state
1361 */
1362 td->initial_quirks = hdev->quirks;
1363
1364 /* This allows the driver to correctly support devices
1365 * that emit events over several HID messages.
1366 */
1367 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1368
1369 /*
1370 * This allows the driver to handle different input sensors
1371 * that emits events through different reports on the same HID
1372 * device.
1373 */
1374 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1375 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1376
1377 /*
1378 * Some multitouch screens do not like to be polled for input
1379 * reports. Fortunately, the Win8 spec says that all touches
1380 * should be sent during each report, making the initialization
1381 * of input reports unnecessary. For Win7 devices, well, let's hope
1382 * they will still be happy (this is only be a problem if a touch
1383 * was already there while probing the device).
1384 *
1385 * In addition some touchpads do not behave well if we read
1386 * all feature reports from them. Instead we prevent
1387 * initial report fetching and then selectively fetch each
1388 * report we are interested in.
1389 */
1390 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1391
1392 timer_setup(&td->release_timer, mt_expired_timeout, 0);
1393
1394 ret = hid_parse(hdev);
1395 if (ret != 0)
1396 return ret;
1397
1398 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1399 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1400
1401 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1402 if (ret)
1403 return ret;
1404
1405 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1406 if (ret)
1407 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1408 hdev->name);
1409
1410 mt_set_maxcontacts(hdev);
1411 mt_set_input_mode(hdev);
1412
1413 /* release .fields memory as it is not used anymore */
1414 devm_kfree(&hdev->dev, td->fields);
1415 td->fields = NULL;
1416
1417 return 0;
1418 }
1419
1420 #ifdef CONFIG_PM
1421 static int mt_reset_resume(struct hid_device *hdev)
1422 {
1423 mt_release_contacts(hdev);
1424 mt_set_maxcontacts(hdev);
1425 mt_set_input_mode(hdev);
1426 return 0;
1427 }
1428
1429 static int mt_resume(struct hid_device *hdev)
1430 {
1431 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1432 * It should be safe to send it to other devices too.
1433 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1434
1435 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1436
1437 return 0;
1438 }
1439 #endif
1440
1441 static void mt_remove(struct hid_device *hdev)
1442 {
1443 struct mt_device *td = hid_get_drvdata(hdev);
1444
1445 del_timer_sync(&td->release_timer);
1446
1447 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1448 hid_hw_stop(hdev);
1449 hdev->quirks = td->initial_quirks;
1450 }
1451
1452 /*
1453 * This list contains only:
1454 * - VID/PID of products not working with the default multitouch handling
1455 * - 2 generic rules.
1456 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1457 */
1458 static const struct hid_device_id mt_devices[] = {
1459
1460 /* 3M panels */
1461 { .driver_data = MT_CLS_3M,
1462 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1463 USB_DEVICE_ID_3M1968) },
1464 { .driver_data = MT_CLS_3M,
1465 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1466 USB_DEVICE_ID_3M2256) },
1467 { .driver_data = MT_CLS_3M,
1468 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1469 USB_DEVICE_ID_3M3266) },
1470
1471 /* Alps devices */
1472 { .driver_data = MT_CLS_WIN_8_DUAL,
1473 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1474 USB_VENDOR_ID_ALPS_JP,
1475 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) },
1476 { .driver_data = MT_CLS_WIN_8_DUAL,
1477 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1478 USB_VENDOR_ID_ALPS_JP,
1479 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) },
1480
1481 /* Lenovo X1 TAB Gen 2 */
1482 { .driver_data = MT_CLS_WIN_8_DUAL,
1483 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1484 USB_VENDOR_ID_LENOVO,
1485 USB_DEVICE_ID_LENOVO_X1_TAB) },
1486
1487 /* Anton devices */
1488 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1489 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1490 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1491
1492 /* Asus T304UA */
1493 { .driver_data = MT_CLS_ASUS,
1494 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1495 USB_VENDOR_ID_ASUSTEK,
1496 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
1497
1498 /* Atmel panels */
1499 { .driver_data = MT_CLS_SERIAL,
1500 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1501 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1502
1503 /* Baanto multitouch devices */
1504 { .driver_data = MT_CLS_NSMU,
1505 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1506 USB_DEVICE_ID_BAANTO_MT_190W2) },
1507
1508 /* Cando panels */
1509 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1510 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1511 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1512 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1513 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1514 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1515
1516 /* Chunghwa Telecom touch panels */
1517 { .driver_data = MT_CLS_NSMU,
1518 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1519 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1520
1521 /* Cirque devices */
1522 { .driver_data = MT_CLS_WIN_8_DUAL,
1523 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1524 I2C_VENDOR_ID_CIRQUE,
1525 I2C_PRODUCT_ID_CIRQUE_121F) },
1526
1527 /* CJTouch panels */
1528 { .driver_data = MT_CLS_NSMU,
1529 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1530 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1531 { .driver_data = MT_CLS_NSMU,
1532 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1533 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1534
1535 /* CVTouch panels */
1536 { .driver_data = MT_CLS_NSMU,
1537 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1538 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1539
1540 /* eGalax devices (resistive) */
1541 { .driver_data = MT_CLS_EGALAX,
1542 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1543 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1544 { .driver_data = MT_CLS_EGALAX,
1545 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1546 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1547
1548 /* eGalax devices (capacitive) */
1549 { .driver_data = MT_CLS_EGALAX_SERIAL,
1550 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1551 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1552 { .driver_data = MT_CLS_EGALAX,
1553 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1554 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1555 { .driver_data = MT_CLS_EGALAX_SERIAL,
1556 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1557 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1558 { .driver_data = MT_CLS_EGALAX_SERIAL,
1559 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1560 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1561 { .driver_data = MT_CLS_EGALAX_SERIAL,
1562 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1563 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1564 { .driver_data = MT_CLS_EGALAX_SERIAL,
1565 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1566 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1567 { .driver_data = MT_CLS_EGALAX,
1568 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1569 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1570 { .driver_data = MT_CLS_EGALAX,
1571 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1572 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1573 { .driver_data = MT_CLS_EGALAX_SERIAL,
1574 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1575 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1576 { .driver_data = MT_CLS_EGALAX,
1577 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1578 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1579 { .driver_data = MT_CLS_EGALAX,
1580 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1581 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1582 { .driver_data = MT_CLS_EGALAX,
1583 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1584 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1585 { .driver_data = MT_CLS_EGALAX,
1586 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1587 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1588 { .driver_data = MT_CLS_EGALAX_SERIAL,
1589 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1590 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1591 { .driver_data = MT_CLS_EGALAX_SERIAL,
1592 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1593 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1594 { .driver_data = MT_CLS_EGALAX_SERIAL,
1595 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1596 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1597
1598 /* Elitegroup panel */
1599 { .driver_data = MT_CLS_SERIAL,
1600 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1601 USB_DEVICE_ID_ELITEGROUP_05D8) },
1602
1603 /* Flatfrog Panels */
1604 { .driver_data = MT_CLS_FLATFROG,
1605 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1606 USB_DEVICE_ID_MULTITOUCH_3200) },
1607
1608 /* FocalTech Panels */
1609 { .driver_data = MT_CLS_SERIAL,
1610 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1611 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1612
1613 /* GeneralTouch panel */
1614 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1615 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1616 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1617 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1618 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1619 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1620 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1621 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1622 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1623 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1624 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1625 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1626 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1627 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1628 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1629 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1630 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1631 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1632 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1633 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1634 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1635
1636 /* Gametel game controller */
1637 { .driver_data = MT_CLS_NSMU,
1638 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1639 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1640
1641 /* GoodTouch panels */
1642 { .driver_data = MT_CLS_NSMU,
1643 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1644 USB_DEVICE_ID_GOODTOUCH_000f) },
1645
1646 /* Hanvon panels */
1647 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1648 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1649 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1650
1651 /* Ilitek dual touch panel */
1652 { .driver_data = MT_CLS_NSMU,
1653 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1654 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1655
1656 /* LG Melfas panel */
1657 { .driver_data = MT_CLS_LG,
1658 HID_USB_DEVICE(USB_VENDOR_ID_LG,
1659 USB_DEVICE_ID_LG_MELFAS_MT) },
1660
1661 /* MosArt panels */
1662 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1663 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1664 USB_DEVICE_ID_ASUS_T91MT)},
1665 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1666 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1667 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1668 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1669 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1670 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1671
1672 /* Panasonic panels */
1673 { .driver_data = MT_CLS_PANASONIC,
1674 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1675 USB_DEVICE_ID_PANABOARD_UBT780) },
1676 { .driver_data = MT_CLS_PANASONIC,
1677 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1678 USB_DEVICE_ID_PANABOARD_UBT880) },
1679
1680 /* Novatek Panel */
1681 { .driver_data = MT_CLS_NSMU,
1682 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1683 USB_DEVICE_ID_NOVATEK_PCT) },
1684
1685 /* Ntrig Panel */
1686 { .driver_data = MT_CLS_NSMU,
1687 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1688 USB_VENDOR_ID_NTRIG, 0x1b05) },
1689
1690 /* PixArt optical touch screen */
1691 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1692 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1693 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1694 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1695 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1696 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1697 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1698 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1699 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1700
1701 /* PixCir-based panels */
1702 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1703 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1704 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1705
1706 /* Quanta-based panels */
1707 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1708 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1709 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1710
1711 /* Stantum panels */
1712 { .driver_data = MT_CLS_CONFIDENCE,
1713 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1714 USB_DEVICE_ID_MTP_STM)},
1715
1716 /* TopSeed panels */
1717 { .driver_data = MT_CLS_TOPSEED,
1718 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1719 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1720
1721 /* Touch International panels */
1722 { .driver_data = MT_CLS_NSMU,
1723 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1724 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1725
1726 /* Unitec panels */
1727 { .driver_data = MT_CLS_NSMU,
1728 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1729 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1730 { .driver_data = MT_CLS_NSMU,
1731 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1732 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1733
1734 /* VTL panels */
1735 { .driver_data = MT_CLS_VTL,
1736 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1737 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1738
1739 /* Wistron panels */
1740 { .driver_data = MT_CLS_NSMU,
1741 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1742 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1743
1744 /* XAT */
1745 { .driver_data = MT_CLS_NSMU,
1746 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1747 USB_DEVICE_ID_XAT_CSR) },
1748
1749 /* Xiroku */
1750 { .driver_data = MT_CLS_NSMU,
1751 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1752 USB_DEVICE_ID_XIROKU_SPX) },
1753 { .driver_data = MT_CLS_NSMU,
1754 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1755 USB_DEVICE_ID_XIROKU_MPX) },
1756 { .driver_data = MT_CLS_NSMU,
1757 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1758 USB_DEVICE_ID_XIROKU_CSR) },
1759 { .driver_data = MT_CLS_NSMU,
1760 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1761 USB_DEVICE_ID_XIROKU_SPX1) },
1762 { .driver_data = MT_CLS_NSMU,
1763 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1764 USB_DEVICE_ID_XIROKU_MPX1) },
1765 { .driver_data = MT_CLS_NSMU,
1766 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1767 USB_DEVICE_ID_XIROKU_CSR1) },
1768 { .driver_data = MT_CLS_NSMU,
1769 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1770 USB_DEVICE_ID_XIROKU_SPX2) },
1771 { .driver_data = MT_CLS_NSMU,
1772 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1773 USB_DEVICE_ID_XIROKU_MPX2) },
1774 { .driver_data = MT_CLS_NSMU,
1775 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1776 USB_DEVICE_ID_XIROKU_CSR2) },
1777
1778 /* Google MT devices */
1779 { .driver_data = MT_CLS_GOOGLE,
1780 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
1781 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
1782
1783 /* Generic MT device */
1784 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1785
1786 /* Generic Win 8 certified MT device */
1787 { .driver_data = MT_CLS_WIN_8,
1788 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1789 HID_ANY_ID, HID_ANY_ID) },
1790 { }
1791 };
1792 MODULE_DEVICE_TABLE(hid, mt_devices);
1793
1794 static const struct hid_usage_id mt_grabbed_usages[] = {
1795 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1796 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1797 };
1798
1799 static struct hid_driver mt_driver = {
1800 .name = "hid-multitouch",
1801 .id_table = mt_devices,
1802 .probe = mt_probe,
1803 .remove = mt_remove,
1804 .input_mapping = mt_input_mapping,
1805 .input_mapped = mt_input_mapped,
1806 .input_configured = mt_input_configured,
1807 .feature_mapping = mt_feature_mapping,
1808 .usage_table = mt_grabbed_usages,
1809 .event = mt_event,
1810 .report = mt_report,
1811 #ifdef CONFIG_PM
1812 .reset_resume = mt_reset_resume,
1813 .resume = mt_resume,
1814 #endif
1815 };
1816 module_hid_driver(mt_driver);
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