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mm: memcontrol: use per-cpu stocks for socket memory uncharging
[linux/fpc-iii.git] / drivers / hid / hid-multitouch.c
blob440b999304a554309c208999ae2be053ec218d32
1 /*
2 * HID driver for multitouch panels
3 *
4 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
5 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
6 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
7 * Copyright (c) 2012-2013 Red Hat, Inc
8 *
9 * This code is partly based on hid-egalax.c:
10 *
11 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
12 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
13 * Copyright (c) 2010 Canonical, Ltd.
14 *
15 * This code is partly based on hid-3m-pct.c:
16 *
17 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
18 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
19 * Copyright (c) 2010 Canonical, Ltd.
20 *
21 */
22
23 /*
24 * This program is free software; you can redistribute it and/or modify it
25 * under the terms of the GNU General Public License as published by the Free
26 * Software Foundation; either version 2 of the License, or (at your option)
27 * any later version.
28 */
29
30 /*
31 * This driver is regularly tested thanks to the tool hid-test[1].
32 * This tool relies on hid-replay[2] and a database of hid devices[3].
33 * Please run these regression tests before patching this module so that
34 * your patch won't break existing known devices.
35 *
36 * [1] https://github.com/bentiss/hid-test
37 * [2] https://github.com/bentiss/hid-replay
38 * [3] https://github.com/bentiss/hid-devices
39 */
40
41 #include <linux/device.h>
42 #include <linux/hid.h>
43 #include <linux/module.h>
44 #include <linux/slab.h>
45 #include <linux/input/mt.h>
46 #include <linux/string.h>
47 #include <linux/timer.h>
48
49
50 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
51 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
52 MODULE_DESCRIPTION("HID multitouch panels");
53 MODULE_LICENSE("GPL");
54
55 #include "hid-ids.h"
56
57 /* quirks to control the device */
58 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0)
59 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1)
60 #define MT_QUIRK_CYPRESS BIT(2)
61 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3)
62 #define MT_QUIRK_ALWAYS_VALID BIT(4)
63 #define MT_QUIRK_VALID_IS_INRANGE BIT(5)
64 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6)
65 #define MT_QUIRK_CONFIDENCE BIT(7)
66 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8)
67 #define MT_QUIRK_NO_AREA BIT(9)
68 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10)
69 #define MT_QUIRK_HOVERING BIT(11)
70 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12)
71 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13)
72 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14)
73 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15)
74 #define MT_QUIRK_STICKY_FINGERS BIT(16)
75 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17)
76
77 #define MT_INPUTMODE_TOUCHSCREEN 0x02
78 #define MT_INPUTMODE_TOUCHPAD 0x03
79
80 #define MT_BUTTONTYPE_CLICKPAD 0
81
82 #define MT_IO_FLAGS_RUNNING 0
83 #define MT_IO_FLAGS_ACTIVE_SLOTS 1
84 #define MT_IO_FLAGS_PENDING_SLOTS 2
85
86 struct mt_slot {
87 __s32 x, y, cx, cy, p, w, h;
88 __s32 contactid; /* the device ContactID assigned to this slot */
89 bool touch_state; /* is the touch valid? */
90 bool inrange_state; /* is the finger in proximity of the sensor? */
91 bool confidence_state; /* is the touch made by a finger? */
92 };
93
94 struct mt_class {
95 __s32 name; /* MT_CLS */
96 __s32 quirks;
97 __s32 sn_move; /* Signal/noise ratio for move events */
98 __s32 sn_width; /* Signal/noise ratio for width events */
99 __s32 sn_height; /* Signal/noise ratio for height events */
100 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
101 __u8 maxcontacts;
102 bool is_indirect; /* true for touchpads */
103 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
104 };
105
106 struct mt_fields {
107 unsigned usages[HID_MAX_FIELDS];
108 unsigned int length;
109 };
110
111 struct mt_device {
112 struct mt_slot curdata; /* placeholder of incoming data */
113 struct mt_class mtclass; /* our mt device class */
114 struct timer_list release_timer; /* to release sticky fingers */
115 struct mt_fields *fields; /* temporary placeholder for storing the
116 multitouch fields */
117 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */
118 int cc_index; /* contact count field index in the report */
119 int cc_value_index; /* contact count value index in the field */
120 unsigned last_slot_field; /* the last field of a slot */
121 unsigned mt_report_id; /* the report ID of the multitouch device */
122 unsigned long initial_quirks; /* initial quirks state */
123 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */
124 __s16 inputmode_index; /* InputMode HID feature index in the report */
125 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature,
126 -1 if non-existent */
127 __u8 inputmode_value; /* InputMode HID feature value */
128 __u8 num_received; /* how many contacts we received */
129 __u8 num_expected; /* expected last contact index */
130 __u8 maxcontacts;
131 __u8 touches_by_report; /* how many touches are present in one report:
132 * 1 means we should use a serial protocol
133 * > 1 means hybrid (multitouch) protocol */
134 __u8 buttons_count; /* number of physical buttons per touchpad */
135 bool is_buttonpad; /* is this device a button pad? */
136 bool serial_maybe; /* need to check for serial protocol */
137 bool curvalid; /* is the current contact valid? */
138 unsigned mt_flags; /* flags to pass to input-mt */
139 };
140
141 static void mt_post_parse_default_settings(struct mt_device *td);
142 static void mt_post_parse(struct mt_device *td);
143
144 /* classes of device behavior */
145 #define MT_CLS_DEFAULT 0x0001
146
147 #define MT_CLS_SERIAL 0x0002
148 #define MT_CLS_CONFIDENCE 0x0003
149 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
150 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
151 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
152 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
153 /* reserved 0x0008 */
154 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
155 #define MT_CLS_NSMU 0x000a
156 /* reserved 0x0010 */
157 /* reserved 0x0011 */
158 #define MT_CLS_WIN_8 0x0012
159 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
160 #define MT_CLS_WIN_8_DUAL 0x0014
161
162 /* vendor specific classes */
163 #define MT_CLS_3M 0x0101
164 /* reserved 0x0102 */
165 #define MT_CLS_EGALAX 0x0103
166 #define MT_CLS_EGALAX_SERIAL 0x0104
167 #define MT_CLS_TOPSEED 0x0105
168 #define MT_CLS_PANASONIC 0x0106
169 #define MT_CLS_FLATFROG 0x0107
170 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
171 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
172 #define MT_CLS_LG 0x010a
173 #define MT_CLS_ASUS 0x010b
174 #define MT_CLS_VTL 0x0110
175 #define MT_CLS_GOOGLE 0x0111
176
177 #define MT_DEFAULT_MAXCONTACT 10
178 #define MT_MAX_MAXCONTACT 250
179
180 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
181 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
182
183 /*
184 * these device-dependent functions determine what slot corresponds
185 * to a valid contact that was just read.
186 */
187
188 static int cypress_compute_slot(struct mt_device *td)
189 {
190 if (td->curdata.contactid != 0 || td->num_received == 0)
191 return td->curdata.contactid;
192 else
193 return -1;
194 }
195
196 static struct mt_class mt_classes[] = {
197 { .name = MT_CLS_DEFAULT,
198 .quirks = MT_QUIRK_ALWAYS_VALID |
199 MT_QUIRK_CONTACT_CNT_ACCURATE },
200 { .name = MT_CLS_NSMU,
201 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
202 { .name = MT_CLS_SERIAL,
203 .quirks = MT_QUIRK_ALWAYS_VALID},
204 { .name = MT_CLS_CONFIDENCE,
205 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
206 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
207 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
208 MT_QUIRK_SLOT_IS_CONTACTID },
209 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
210 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
211 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
212 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
213 .quirks = MT_QUIRK_VALID_IS_INRANGE |
214 MT_QUIRK_SLOT_IS_CONTACTID,
215 .maxcontacts = 2 },
216 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
217 .quirks = MT_QUIRK_VALID_IS_INRANGE |
218 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
219 .maxcontacts = 2 },
220 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
221 .quirks = MT_QUIRK_VALID_IS_INRANGE |
222 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
223 { .name = MT_CLS_WIN_8,
224 .quirks = MT_QUIRK_ALWAYS_VALID |
225 MT_QUIRK_IGNORE_DUPLICATES |
226 MT_QUIRK_HOVERING |
227 MT_QUIRK_CONTACT_CNT_ACCURATE |
228 MT_QUIRK_STICKY_FINGERS },
229 { .name = MT_CLS_EXPORT_ALL_INPUTS,
230 .quirks = MT_QUIRK_ALWAYS_VALID |
231 MT_QUIRK_CONTACT_CNT_ACCURATE,
232 .export_all_inputs = true },
233 { .name = MT_CLS_WIN_8_DUAL,
234 .quirks = MT_QUIRK_ALWAYS_VALID |
235 MT_QUIRK_IGNORE_DUPLICATES |
236 MT_QUIRK_HOVERING |
237 MT_QUIRK_CONTACT_CNT_ACCURATE,
238 .export_all_inputs = true },
239
240 /*
241 * vendor specific classes
242 */
243 { .name = MT_CLS_3M,
244 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
245 MT_QUIRK_SLOT_IS_CONTACTID |
246 MT_QUIRK_TOUCH_SIZE_SCALING,
247 .sn_move = 2048,
248 .sn_width = 128,
249 .sn_height = 128,
250 .maxcontacts = 60,
251 },
252 { .name = MT_CLS_EGALAX,
253 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
254 MT_QUIRK_VALID_IS_INRANGE,
255 .sn_move = 4096,
256 .sn_pressure = 32,
257 },
258 { .name = MT_CLS_EGALAX_SERIAL,
259 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
260 MT_QUIRK_ALWAYS_VALID,
261 .sn_move = 4096,
262 .sn_pressure = 32,
263 },
264 { .name = MT_CLS_TOPSEED,
265 .quirks = MT_QUIRK_ALWAYS_VALID,
266 .is_indirect = true,
267 .maxcontacts = 2,
268 },
269 { .name = MT_CLS_PANASONIC,
270 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
271 .maxcontacts = 4 },
272 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
273 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
274 MT_QUIRK_VALID_IS_INRANGE |
275 MT_QUIRK_SLOT_IS_CONTACTID,
276 .maxcontacts = 2
277 },
278 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
279 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
280 MT_QUIRK_SLOT_IS_CONTACTID
281 },
282
283 { .name = MT_CLS_FLATFROG,
284 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
285 MT_QUIRK_NO_AREA,
286 .sn_move = 2048,
287 .maxcontacts = 40,
288 },
289 { .name = MT_CLS_LG,
290 .quirks = MT_QUIRK_ALWAYS_VALID |
291 MT_QUIRK_FIX_CONST_CONTACT_ID |
292 MT_QUIRK_IGNORE_DUPLICATES |
293 MT_QUIRK_HOVERING |
294 MT_QUIRK_CONTACT_CNT_ACCURATE },
295 { .name = MT_CLS_ASUS,
296 .quirks = MT_QUIRK_ALWAYS_VALID |
297 MT_QUIRK_CONTACT_CNT_ACCURATE |
298 MT_QUIRK_ASUS_CUSTOM_UP },
299 { .name = MT_CLS_VTL,
300 .quirks = MT_QUIRK_ALWAYS_VALID |
301 MT_QUIRK_CONTACT_CNT_ACCURATE |
302 MT_QUIRK_FORCE_GET_FEATURE,
303 },
304 { .name = MT_CLS_GOOGLE,
305 .quirks = MT_QUIRK_ALWAYS_VALID |
306 MT_QUIRK_CONTACT_CNT_ACCURATE |
307 MT_QUIRK_SLOT_IS_CONTACTID |
308 MT_QUIRK_HOVERING
309 },
310 { }
311 };
312
313 static ssize_t mt_show_quirks(struct device *dev,
314 struct device_attribute *attr,
315 char *buf)
316 {
317 struct hid_device *hdev = to_hid_device(dev);
318 struct mt_device *td = hid_get_drvdata(hdev);
319
320 return sprintf(buf, "%u\n", td->mtclass.quirks);
321 }
322
323 static ssize_t mt_set_quirks(struct device *dev,
324 struct device_attribute *attr,
325 const char *buf, size_t count)
326 {
327 struct hid_device *hdev = to_hid_device(dev);
328 struct mt_device *td = hid_get_drvdata(hdev);
329
330 unsigned long val;
331
332 if (kstrtoul(buf, 0, &val))
333 return -EINVAL;
334
335 td->mtclass.quirks = val;
336
337 if (td->cc_index < 0)
338 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
339
340 return count;
341 }
342
343 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
344
345 static struct attribute *sysfs_attrs[] = {
346 &dev_attr_quirks.attr,
347 NULL
348 };
349
350 static const struct attribute_group mt_attribute_group = {
351 .attrs = sysfs_attrs
352 };
353
354 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
355 {
356 struct mt_device *td = hid_get_drvdata(hdev);
357 int ret, size = hid_report_len(report);
358 u8 *buf;
359
360 /*
361 * Do not fetch the feature report if the device has been explicitly
362 * marked as non-capable.
363 */
364 if (td->initial_quirks & HID_QUIRK_NO_INIT_REPORTS)
365 return;
366
367 buf = hid_alloc_report_buf(report, GFP_KERNEL);
368 if (!buf)
369 return;
370
371 ret = hid_hw_raw_request(hdev, report->id, buf, size,
372 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
373 if (ret < 0) {
374 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
375 report->id);
376 } else {
377 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
378 size, 0);
379 if (ret)
380 dev_warn(&hdev->dev, "failed to report feature\n");
381 }
382
383 kfree(buf);
384 }
385
386 static void mt_feature_mapping(struct hid_device *hdev,
387 struct hid_field *field, struct hid_usage *usage)
388 {
389 struct mt_device *td = hid_get_drvdata(hdev);
390
391 switch (usage->hid) {
392 case HID_DG_INPUTMODE:
393 /* Ignore if value index is out of bounds. */
394 if (usage->usage_index >= field->report_count) {
395 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
396 break;
397 }
398
399 if (td->inputmode < 0) {
400 td->inputmode = field->report->id;
401 td->inputmode_index = usage->usage_index;
402 } else {
403 /*
404 * Some elan panels wrongly declare 2 input mode
405 * features, and silently ignore when we set the
406 * value in the second field. Skip the second feature
407 * and hope for the best.
408 */
409 dev_info(&hdev->dev,
410 "Ignoring the extra HID_DG_INPUTMODE\n");
411 }
412
413 break;
414 case HID_DG_CONTACTMAX:
415 mt_get_feature(hdev, field->report);
416
417 td->maxcontact_report_id = field->report->id;
418 td->maxcontacts = field->value[0];
419 if (!td->maxcontacts &&
420 field->logical_maximum <= MT_MAX_MAXCONTACT)
421 td->maxcontacts = field->logical_maximum;
422 if (td->mtclass.maxcontacts)
423 /* check if the maxcontacts is given by the class */
424 td->maxcontacts = td->mtclass.maxcontacts;
425
426 break;
427 case HID_DG_BUTTONTYPE:
428 if (usage->usage_index >= field->report_count) {
429 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
430 break;
431 }
432
433 mt_get_feature(hdev, field->report);
434 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
435 td->is_buttonpad = true;
436
437 break;
438 case 0xff0000c5:
439 /* Retrieve the Win8 blob once to enable some devices */
440 if (usage->usage_index == 0)
441 mt_get_feature(hdev, field->report);
442 break;
443 }
444 }
445
446 static void set_abs(struct input_dev *input, unsigned int code,
447 struct hid_field *field, int snratio)
448 {
449 int fmin = field->logical_minimum;
450 int fmax = field->logical_maximum;
451 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
452 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
453 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
454 }
455
456 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
457 struct hid_input *hi)
458 {
459 struct mt_fields *f = td->fields;
460
461 if (f->length >= HID_MAX_FIELDS)
462 return;
463
464 f->usages[f->length++] = usage->hid;
465 }
466
467 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
468 struct hid_field *field, struct hid_usage *usage,
469 unsigned long **bit, int *max)
470 {
471 struct mt_device *td = hid_get_drvdata(hdev);
472 struct mt_class *cls = &td->mtclass;
473 int code;
474 struct hid_usage *prev_usage = NULL;
475
476 if (field->application == HID_DG_TOUCHSCREEN)
477 td->mt_flags |= INPUT_MT_DIRECT;
478
479 /*
480 * Model touchscreens providing buttons as touchpads.
481 */
482 if (field->application == HID_DG_TOUCHPAD ||
483 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
484 td->mt_flags |= INPUT_MT_POINTER;
485 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
486 }
487
488 /* count the buttons on touchpads */
489 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
490 td->buttons_count++;
491
492 if (usage->usage_index)
493 prev_usage = &field->usage[usage->usage_index - 1];
494
495 switch (usage->hid & HID_USAGE_PAGE) {
496
497 case HID_UP_GENDESK:
498 switch (usage->hid) {
499 case HID_GD_X:
500 if (prev_usage && (prev_usage->hid == usage->hid)) {
501 hid_map_usage(hi, usage, bit, max,
502 EV_ABS, ABS_MT_TOOL_X);
503 set_abs(hi->input, ABS_MT_TOOL_X, field,
504 cls->sn_move);
505 } else {
506 hid_map_usage(hi, usage, bit, max,
507 EV_ABS, ABS_MT_POSITION_X);
508 set_abs(hi->input, ABS_MT_POSITION_X, field,
509 cls->sn_move);
510 }
511
512 mt_store_field(usage, td, hi);
513 return 1;
514 case HID_GD_Y:
515 if (prev_usage && (prev_usage->hid == usage->hid)) {
516 hid_map_usage(hi, usage, bit, max,
517 EV_ABS, ABS_MT_TOOL_Y);
518 set_abs(hi->input, ABS_MT_TOOL_Y, field,
519 cls->sn_move);
520 } else {
521 hid_map_usage(hi, usage, bit, max,
522 EV_ABS, ABS_MT_POSITION_Y);
523 set_abs(hi->input, ABS_MT_POSITION_Y, field,
524 cls->sn_move);
525 }
526
527 mt_store_field(usage, td, hi);
528 return 1;
529 }
530 return 0;
531
532 case HID_UP_DIGITIZER:
533 switch (usage->hid) {
534 case HID_DG_INRANGE:
535 if (cls->quirks & MT_QUIRK_HOVERING) {
536 hid_map_usage(hi, usage, bit, max,
537 EV_ABS, ABS_MT_DISTANCE);
538 input_set_abs_params(hi->input,
539 ABS_MT_DISTANCE, 0, 1, 0, 0);
540 }
541 mt_store_field(usage, td, hi);
542 return 1;
543 case HID_DG_CONFIDENCE:
544 if ((cls->name == MT_CLS_WIN_8 ||
545 cls->name == MT_CLS_WIN_8_DUAL) &&
546 field->application == HID_DG_TOUCHPAD)
547 cls->quirks |= MT_QUIRK_CONFIDENCE;
548 mt_store_field(usage, td, hi);
549 return 1;
550 case HID_DG_TIPSWITCH:
551 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
552 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
553 mt_store_field(usage, td, hi);
554 return 1;
555 case HID_DG_CONTACTID:
556 mt_store_field(usage, td, hi);
557 td->touches_by_report++;
558 td->mt_report_id = field->report->id;
559 return 1;
560 case HID_DG_WIDTH:
561 hid_map_usage(hi, usage, bit, max,
562 EV_ABS, ABS_MT_TOUCH_MAJOR);
563 if (!(cls->quirks & MT_QUIRK_NO_AREA))
564 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
565 cls->sn_width);
566 mt_store_field(usage, td, hi);
567 return 1;
568 case HID_DG_HEIGHT:
569 hid_map_usage(hi, usage, bit, max,
570 EV_ABS, ABS_MT_TOUCH_MINOR);
571 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
572 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
573 cls->sn_height);
574 input_set_abs_params(hi->input,
575 ABS_MT_ORIENTATION, 0, 1, 0, 0);
576 }
577 mt_store_field(usage, td, hi);
578 return 1;
579 case HID_DG_TIPPRESSURE:
580 hid_map_usage(hi, usage, bit, max,
581 EV_ABS, ABS_MT_PRESSURE);
582 set_abs(hi->input, ABS_MT_PRESSURE, field,
583 cls->sn_pressure);
584 mt_store_field(usage, td, hi);
585 return 1;
586 case HID_DG_CONTACTCOUNT:
587 /* Ignore if indexes are out of bounds. */
588 if (field->index >= field->report->maxfield ||
589 usage->usage_index >= field->report_count)
590 return 1;
591 td->cc_index = field->index;
592 td->cc_value_index = usage->usage_index;
593 return 1;
594 case HID_DG_CONTACTMAX:
595 /* we don't set td->last_slot_field as contactcount and
596 * contact max are global to the report */
597 return -1;
598 case HID_DG_TOUCH:
599 /* Legacy devices use TIPSWITCH and not TOUCH.
600 * Let's just ignore this field. */
601 return -1;
602 }
603 /* let hid-input decide for the others */
604 return 0;
605
606 case HID_UP_BUTTON:
607 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
608 /*
609 * MS PTP spec says that external buttons left and right have
610 * usages 2 and 3.
611 */
612 if ((cls->name == MT_CLS_WIN_8 ||
613 cls->name == MT_CLS_WIN_8_DUAL) &&
614 field->application == HID_DG_TOUCHPAD &&
615 (usage->hid & HID_USAGE) > 1)
616 code--;
617 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
618 input_set_capability(hi->input, EV_KEY, code);
619 return 1;
620
621 case 0xff000000:
622 /* we do not want to map these: no input-oriented meaning */
623 return -1;
624 }
625
626 return 0;
627 }
628
629 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
630 {
631 __s32 quirks = td->mtclass.quirks;
632
633 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
634 return td->curdata.contactid;
635
636 if (quirks & MT_QUIRK_CYPRESS)
637 return cypress_compute_slot(td);
638
639 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
640 return td->num_received;
641
642 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
643 return td->curdata.contactid - 1;
644
645 return input_mt_get_slot_by_key(input, td->curdata.contactid);
646 }
647
648 /*
649 * this function is called when a whole contact has been processed,
650 * so that it can assign it to a slot and store the data there
651 */
652 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
653 {
654 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
655 td->num_received >= td->num_expected)
656 return;
657
658 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
659 int active;
660 int slotnum = mt_compute_slot(td, input);
661 struct mt_slot *s = &td->curdata;
662 struct input_mt *mt = input->mt;
663
664 if (slotnum < 0 || slotnum >= td->maxcontacts)
665 return;
666
667 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
668 struct input_mt_slot *slot = &mt->slots[slotnum];
669 if (input_mt_is_active(slot) &&
670 input_mt_is_used(mt, slot))
671 return;
672 }
673
674 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE))
675 s->confidence_state = 1;
676 active = (s->touch_state || s->inrange_state) &&
677 s->confidence_state;
678
679 input_mt_slot(input, slotnum);
680 input_mt_report_slot_state(input, MT_TOOL_FINGER, active);
681 if (active) {
682 /* this finger is in proximity of the sensor */
683 int wide = (s->w > s->h);
684 int major = max(s->w, s->h);
685 int minor = min(s->w, s->h);
686
687 /*
688 * divided by two to match visual scale of touch
689 * for devices with this quirk
690 */
691 if (td->mtclass.quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
692 major = major >> 1;
693 minor = minor >> 1;
694 }
695
696 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
697 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
698 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
699 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
700 input_event(input, EV_ABS, ABS_MT_DISTANCE,
701 !s->touch_state);
702 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
703 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
704 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
705 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
706
707 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
708 }
709 }
710
711 td->num_received++;
712 }
713
714 /*
715 * this function is called when a whole packet has been received and processed,
716 * so that it can decide what to send to the input layer.
717 */
718 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
719 {
720 input_mt_sync_frame(input);
721 input_sync(input);
722 td->num_received = 0;
723 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
724 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
725 else
726 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
727 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
728 }
729
730 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
731 struct hid_usage *usage, __s32 value)
732 {
733 /* we will handle the hidinput part later, now remains hiddev */
734 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
735 hid->hiddev_hid_event(hid, field, usage, value);
736
737 return 1;
738 }
739
740 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
741 struct hid_usage *usage, __s32 value)
742 {
743 struct mt_device *td = hid_get_drvdata(hid);
744 __s32 quirks = td->mtclass.quirks;
745 struct input_dev *input = field->hidinput->input;
746
747 if (hid->claimed & HID_CLAIMED_INPUT) {
748 switch (usage->hid) {
749 case HID_DG_INRANGE:
750 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
751 td->curvalid = value;
752 if (quirks & MT_QUIRK_HOVERING)
753 td->curdata.inrange_state = value;
754 break;
755 case HID_DG_TIPSWITCH:
756 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
757 td->curvalid = value;
758 td->curdata.touch_state = value;
759 break;
760 case HID_DG_CONFIDENCE:
761 if (quirks & MT_QUIRK_CONFIDENCE)
762 td->curdata.confidence_state = value;
763 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
764 td->curvalid = value;
765 break;
766 case HID_DG_CONTACTID:
767 td->curdata.contactid = value;
768 break;
769 case HID_DG_TIPPRESSURE:
770 td->curdata.p = value;
771 break;
772 case HID_GD_X:
773 if (usage->code == ABS_MT_TOOL_X)
774 td->curdata.cx = value;
775 else
776 td->curdata.x = value;
777 break;
778 case HID_GD_Y:
779 if (usage->code == ABS_MT_TOOL_Y)
780 td->curdata.cy = value;
781 else
782 td->curdata.y = value;
783 break;
784 case HID_DG_WIDTH:
785 td->curdata.w = value;
786 break;
787 case HID_DG_HEIGHT:
788 td->curdata.h = value;
789 break;
790 case HID_DG_CONTACTCOUNT:
791 break;
792 case HID_DG_TOUCH:
793 /* do nothing */
794 break;
795
796 default:
797 if (usage->type)
798 input_event(input, usage->type, usage->code,
799 value);
800 return;
801 }
802
803 if (usage->usage_index + 1 == field->report_count) {
804 /* we only take into account the last report. */
805 if (usage->hid == td->last_slot_field)
806 mt_complete_slot(td, field->hidinput->input);
807 }
808
809 }
810 }
811
812 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
813 {
814 struct mt_device *td = hid_get_drvdata(hid);
815 struct hid_field *field;
816 unsigned count;
817 int r, n;
818
819 /* sticky fingers release in progress, abort */
820 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
821 return;
822
823 /*
824 * Includes multi-packet support where subsequent
825 * packets are sent with zero contactcount.
826 */
827 if (td->cc_index >= 0) {
828 struct hid_field *field = report->field[td->cc_index];
829 int value = field->value[td->cc_value_index];
830 if (value)
831 td->num_expected = value;
832 }
833
834 for (r = 0; r < report->maxfield; r++) {
835 field = report->field[r];
836 count = field->report_count;
837
838 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
839 continue;
840
841 for (n = 0; n < count; n++)
842 mt_process_mt_event(hid, field, &field->usage[n],
843 field->value[n]);
844 }
845
846 if (td->num_received >= td->num_expected)
847 mt_sync_frame(td, report->field[0]->hidinput->input);
848
849 /*
850 * Windows 8 specs says 2 things:
851 * - once a contact has been reported, it has to be reported in each
852 * subsequent report
853 * - the report rate when fingers are present has to be at least
854 * the refresh rate of the screen, 60 or 120 Hz
855 *
856 * I interprete this that the specification forces a report rate of
857 * at least 60 Hz for a touchscreen to be certified.
858 * Which means that if we do not get a report whithin 16 ms, either
859 * something wrong happens, either the touchscreen forgets to send
860 * a release. Taking a reasonable margin allows to remove issues
861 * with USB communication or the load of the machine.
862 *
863 * Given that Win 8 devices are forced to send a release, this will
864 * only affect laggish machines and the ones that have a firmware
865 * defect.
866 */
867 if (td->mtclass.quirks & MT_QUIRK_STICKY_FINGERS) {
868 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
869 mod_timer(&td->release_timer,
870 jiffies + msecs_to_jiffies(100));
871 else
872 del_timer(&td->release_timer);
873 }
874
875 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
876 }
877
878 static int mt_touch_input_configured(struct hid_device *hdev,
879 struct hid_input *hi)
880 {
881 struct mt_device *td = hid_get_drvdata(hdev);
882 struct mt_class *cls = &td->mtclass;
883 struct input_dev *input = hi->input;
884 int ret;
885
886 if (!td->maxcontacts)
887 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
888
889 mt_post_parse(td);
890 if (td->serial_maybe)
891 mt_post_parse_default_settings(td);
892
893 if (cls->is_indirect)
894 td->mt_flags |= INPUT_MT_POINTER;
895
896 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
897 td->mt_flags |= INPUT_MT_DROP_UNUSED;
898
899 /* check for clickpads */
900 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
901 td->is_buttonpad = true;
902
903 if (td->is_buttonpad)
904 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
905
906 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
907 if (ret)
908 return ret;
909
910 td->mt_flags = 0;
911 return 0;
912 }
913
914 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
915 max, EV_KEY, (c))
916 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
917 struct hid_field *field, struct hid_usage *usage,
918 unsigned long **bit, int *max)
919 {
920 struct mt_device *td = hid_get_drvdata(hdev);
921
922 /*
923 * If mtclass.export_all_inputs is not set, only map fields from
924 * TouchScreen or TouchPad collections. We need to ignore fields
925 * that belong to other collections such as Mouse that might have
926 * the same GenericDesktop usages.
927 */
928 if (!td->mtclass.export_all_inputs &&
929 field->application != HID_DG_TOUCHSCREEN &&
930 field->application != HID_DG_PEN &&
931 field->application != HID_DG_TOUCHPAD &&
932 field->application != HID_GD_KEYBOARD &&
933 field->application != HID_CP_CONSUMER_CONTROL &&
934 field->application != HID_GD_WIRELESS_RADIO_CTLS &&
935 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
936 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP))
937 return -1;
938
939 /*
940 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
941 * touchpad report descriptor. We need to treat these as an array to
942 * map usages to input keys.
943 */
944 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
945 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
946 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
947 set_bit(EV_REP, hi->input->evbit);
948 if (field->flags & HID_MAIN_ITEM_VARIABLE)
949 field->flags &= ~HID_MAIN_ITEM_VARIABLE;
950 switch (usage->hid & HID_USAGE) {
951 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break;
952 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break;
953 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break;
954 case 0x6b: mt_map_key_clear(KEY_F21); break;
955 case 0x6c: mt_map_key_clear(KEY_SLEEP); break;
956 default:
957 return -1;
958 }
959 return 1;
960 }
961
962 /*
963 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
964 * for the stylus.
965 * The check for mt_report_id ensures we don't process
966 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
967 * collection, but within the report ID.
968 */
969 if (field->physical == HID_DG_STYLUS)
970 return 0;
971 else if ((field->physical == 0) &&
972 (field->report->id != td->mt_report_id) &&
973 (td->mt_report_id != -1))
974 return 0;
975
976 if (field->application == HID_DG_TOUCHSCREEN ||
977 field->application == HID_DG_TOUCHPAD)
978 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
979
980 /* let hid-core decide for the others */
981 return 0;
982 }
983
984 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
985 struct hid_field *field, struct hid_usage *usage,
986 unsigned long **bit, int *max)
987 {
988 /*
989 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
990 * for the stylus.
991 */
992 if (field->physical == HID_DG_STYLUS)
993 return 0;
994
995 if (field->application == HID_DG_TOUCHSCREEN ||
996 field->application == HID_DG_TOUCHPAD) {
997 /* We own these mappings, tell hid-input to ignore them */
998 return -1;
999 }
1000
1001 /* let hid-core decide for the others */
1002 return 0;
1003 }
1004
1005 static int mt_event(struct hid_device *hid, struct hid_field *field,
1006 struct hid_usage *usage, __s32 value)
1007 {
1008 struct mt_device *td = hid_get_drvdata(hid);
1009
1010 if (field->report->id == td->mt_report_id)
1011 return mt_touch_event(hid, field, usage, value);
1012
1013 return 0;
1014 }
1015
1016 static void mt_report(struct hid_device *hid, struct hid_report *report)
1017 {
1018 struct mt_device *td = hid_get_drvdata(hid);
1019 struct hid_field *field = report->field[0];
1020
1021 if (!(hid->claimed & HID_CLAIMED_INPUT))
1022 return;
1023
1024 if (report->id == td->mt_report_id)
1025 return mt_touch_report(hid, report);
1026
1027 if (field && field->hidinput && field->hidinput->input)
1028 input_sync(field->hidinput->input);
1029 }
1030
1031 static void mt_set_input_mode(struct hid_device *hdev)
1032 {
1033 struct mt_device *td = hid_get_drvdata(hdev);
1034 struct hid_report *r;
1035 struct hid_report_enum *re;
1036 struct mt_class *cls = &td->mtclass;
1037 char *buf;
1038 int report_len;
1039
1040 if (td->inputmode < 0)
1041 return;
1042
1043 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
1044 r = re->report_id_hash[td->inputmode];
1045 if (r) {
1046 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1047 report_len = hid_report_len(r);
1048 buf = hid_alloc_report_buf(r, GFP_KERNEL);
1049 if (!buf) {
1050 hid_err(hdev, "failed to allocate buffer for report\n");
1051 return;
1052 }
1053 hid_hw_raw_request(hdev, r->id, buf, report_len,
1054 HID_FEATURE_REPORT,
1055 HID_REQ_GET_REPORT);
1056 kfree(buf);
1057 }
1058 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
1059 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
1060 }
1061 }
1062
1063 static void mt_set_maxcontacts(struct hid_device *hdev)
1064 {
1065 struct mt_device *td = hid_get_drvdata(hdev);
1066 struct hid_report *r;
1067 struct hid_report_enum *re;
1068 int fieldmax, max;
1069
1070 if (td->maxcontact_report_id < 0)
1071 return;
1072
1073 if (!td->mtclass.maxcontacts)
1074 return;
1075
1076 re = &hdev->report_enum[HID_FEATURE_REPORT];
1077 r = re->report_id_hash[td->maxcontact_report_id];
1078 if (r) {
1079 max = td->mtclass.maxcontacts;
1080 fieldmax = r->field[0]->logical_maximum;
1081 max = min(fieldmax, max);
1082 if (r->field[0]->value[0] != max) {
1083 r->field[0]->value[0] = max;
1084 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
1085 }
1086 }
1087 }
1088
1089 static void mt_post_parse_default_settings(struct mt_device *td)
1090 {
1091 __s32 quirks = td->mtclass.quirks;
1092
1093 /* unknown serial device needs special quirks */
1094 if (td->touches_by_report == 1) {
1095 quirks |= MT_QUIRK_ALWAYS_VALID;
1096 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1097 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1098 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1099 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1100 }
1101
1102 td->mtclass.quirks = quirks;
1103 }
1104
1105 static void mt_post_parse(struct mt_device *td)
1106 {
1107 struct mt_fields *f = td->fields;
1108 struct mt_class *cls = &td->mtclass;
1109
1110 if (td->touches_by_report > 0) {
1111 int field_count_per_touch = f->length / td->touches_by_report;
1112 td->last_slot_field = f->usages[field_count_per_touch - 1];
1113 }
1114
1115 if (td->cc_index < 0)
1116 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1117 }
1118
1119 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1120 {
1121 struct mt_device *td = hid_get_drvdata(hdev);
1122 char *name;
1123 const char *suffix = NULL;
1124 struct hid_field *field = hi->report->field[0];
1125 int ret;
1126
1127 if (hi->report->id == td->mt_report_id) {
1128 ret = mt_touch_input_configured(hdev, hi);
1129 if (ret)
1130 return ret;
1131 }
1132
1133 /*
1134 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1135 * for the stylus. Check this first, and then rely on the application
1136 * field.
1137 */
1138 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
1139 suffix = "Pen";
1140 /* force BTN_STYLUS to allow tablet matching in udev */
1141 __set_bit(BTN_STYLUS, hi->input->keybit);
1142 } else {
1143 switch (field->application) {
1144 case HID_GD_KEYBOARD:
1145 suffix = "Keyboard";
1146 break;
1147 case HID_GD_KEYPAD:
1148 suffix = "Keypad";
1149 break;
1150 case HID_GD_MOUSE:
1151 suffix = "Mouse";
1152 break;
1153 case HID_DG_STYLUS:
1154 suffix = "Pen";
1155 /* force BTN_STYLUS to allow tablet matching in udev */
1156 __set_bit(BTN_STYLUS, hi->input->keybit);
1157 break;
1158 case HID_DG_TOUCHSCREEN:
1159 /* we do not set suffix = "Touchscreen" */
1160 break;
1161 case HID_DG_TOUCHPAD:
1162 suffix = "Touchpad";
1163 break;
1164 case HID_GD_SYSTEM_CONTROL:
1165 suffix = "System Control";
1166 break;
1167 case HID_CP_CONSUMER_CONTROL:
1168 suffix = "Consumer Control";
1169 break;
1170 case HID_GD_WIRELESS_RADIO_CTLS:
1171 suffix = "Wireless Radio Control";
1172 break;
1173 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1174 suffix = "Custom Media Keys";
1175 break;
1176 default:
1177 suffix = "UNKNOWN";
1178 break;
1179 }
1180 }
1181
1182 if (suffix) {
1183 name = devm_kzalloc(&hi->input->dev,
1184 strlen(hdev->name) + strlen(suffix) + 2,
1185 GFP_KERNEL);
1186 if (name) {
1187 sprintf(name, "%s %s", hdev->name, suffix);
1188 hi->input->name = name;
1189 }
1190 }
1191
1192 return 0;
1193 }
1194
1195 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1196 {
1197 if (field->usage[0].hid != usage ||
1198 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1199 return;
1200
1201 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1202 field->flags |= HID_MAIN_ITEM_VARIABLE;
1203 }
1204
1205 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1206 {
1207 struct hid_report *report;
1208 int i;
1209
1210 list_for_each_entry(report,
1211 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1212 list) {
1213
1214 if (!report->maxfield)
1215 continue;
1216
1217 for (i = 0; i < report->maxfield; i++)
1218 if (report->field[i]->maxusage >= 1)
1219 mt_fix_const_field(report->field[i], usage);
1220 }
1221 }
1222
1223 static void mt_release_contacts(struct hid_device *hid)
1224 {
1225 struct hid_input *hidinput;
1226 struct mt_device *td = hid_get_drvdata(hid);
1227
1228 list_for_each_entry(hidinput, &hid->inputs, list) {
1229 struct input_dev *input_dev = hidinput->input;
1230 struct input_mt *mt = input_dev->mt;
1231 int i;
1232
1233 if (mt) {
1234 for (i = 0; i < mt->num_slots; i++) {
1235 input_mt_slot(input_dev, i);
1236 input_mt_report_slot_state(input_dev,
1237 MT_TOOL_FINGER,
1238 false);
1239 }
1240 input_mt_sync_frame(input_dev);
1241 input_sync(input_dev);
1242 }
1243 }
1244
1245 td->num_received = 0;
1246 }
1247
1248 static void mt_expired_timeout(unsigned long arg)
1249 {
1250 struct hid_device *hdev = (void *)arg;
1251 struct mt_device *td = hid_get_drvdata(hdev);
1252
1253 /*
1254 * An input report came in just before we release the sticky fingers,
1255 * it will take care of the sticky fingers.
1256 */
1257 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1258 return;
1259 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1260 mt_release_contacts(hdev);
1261 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1262 }
1263
1264 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1265 {
1266 int ret, i;
1267 struct mt_device *td;
1268 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1269
1270 for (i = 0; mt_classes[i].name ; i++) {
1271 if (id->driver_data == mt_classes[i].name) {
1272 mtclass = &(mt_classes[i]);
1273 break;
1274 }
1275 }
1276
1277 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1278 if (!td) {
1279 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1280 return -ENOMEM;
1281 }
1282 td->mtclass = *mtclass;
1283 td->inputmode = -1;
1284 td->maxcontact_report_id = -1;
1285 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1286 td->cc_index = -1;
1287 td->mt_report_id = -1;
1288 hid_set_drvdata(hdev, td);
1289
1290 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1291 GFP_KERNEL);
1292 if (!td->fields) {
1293 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
1294 return -ENOMEM;
1295 }
1296
1297 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1298 td->serial_maybe = true;
1299
1300 /*
1301 * Store the initial quirk state
1302 */
1303 td->initial_quirks = hdev->quirks;
1304
1305 /* This allows the driver to correctly support devices
1306 * that emit events over several HID messages.
1307 */
1308 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1309
1310 /*
1311 * This allows the driver to handle different input sensors
1312 * that emits events through different reports on the same HID
1313 * device.
1314 */
1315 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1316 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1317
1318 /*
1319 * Some multitouch screens do not like to be polled for input
1320 * reports. Fortunately, the Win8 spec says that all touches
1321 * should be sent during each report, making the initialization
1322 * of input reports unnecessary. For Win7 devices, well, let's hope
1323 * they will still be happy (this is only be a problem if a touch
1324 * was already there while probing the device).
1325 *
1326 * In addition some touchpads do not behave well if we read
1327 * all feature reports from them. Instead we prevent
1328 * initial report fetching and then selectively fetch each
1329 * report we are interested in.
1330 */
1331 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1332
1333 setup_timer(&td->release_timer, mt_expired_timeout, (long)hdev);
1334
1335 ret = hid_parse(hdev);
1336 if (ret != 0)
1337 return ret;
1338
1339 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1340 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1341
1342 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1343 if (ret)
1344 return ret;
1345
1346 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1347 if (ret)
1348 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1349 hdev->name);
1350
1351 mt_set_maxcontacts(hdev);
1352 mt_set_input_mode(hdev);
1353
1354 /* release .fields memory as it is not used anymore */
1355 devm_kfree(&hdev->dev, td->fields);
1356 td->fields = NULL;
1357
1358 return 0;
1359 }
1360
1361 #ifdef CONFIG_PM
1362 static int mt_reset_resume(struct hid_device *hdev)
1363 {
1364 mt_release_contacts(hdev);
1365 mt_set_maxcontacts(hdev);
1366 mt_set_input_mode(hdev);
1367 return 0;
1368 }
1369
1370 static int mt_resume(struct hid_device *hdev)
1371 {
1372 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1373 * It should be safe to send it to other devices too.
1374 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1375
1376 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1377
1378 return 0;
1379 }
1380 #endif
1381
1382 static void mt_remove(struct hid_device *hdev)
1383 {
1384 struct mt_device *td = hid_get_drvdata(hdev);
1385
1386 del_timer_sync(&td->release_timer);
1387
1388 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1389 hid_hw_stop(hdev);
1390 hdev->quirks = td->initial_quirks;
1391 }
1392
1393 /*
1394 * This list contains only:
1395 * - VID/PID of products not working with the default multitouch handling
1396 * - 2 generic rules.
1397 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1398 */
1399 static const struct hid_device_id mt_devices[] = {
1400
1401 /* 3M panels */
1402 { .driver_data = MT_CLS_3M,
1403 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1404 USB_DEVICE_ID_3M1968) },
1405 { .driver_data = MT_CLS_3M,
1406 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1407 USB_DEVICE_ID_3M2256) },
1408 { .driver_data = MT_CLS_3M,
1409 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1410 USB_DEVICE_ID_3M3266) },
1411
1412 /* Alps devices */
1413 { .driver_data = MT_CLS_WIN_8_DUAL,
1414 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1415 USB_VENDOR_ID_ALPS_JP,
1416 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) },
1417 { .driver_data = MT_CLS_WIN_8_DUAL,
1418 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1419 USB_VENDOR_ID_ALPS_JP,
1420 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) },
1421
1422 /* Anton devices */
1423 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1424 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1425 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1426
1427 /* Asus T304UA */
1428 { .driver_data = MT_CLS_ASUS,
1429 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1430 USB_VENDOR_ID_ASUSTEK,
1431 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
1432
1433 /* Atmel panels */
1434 { .driver_data = MT_CLS_SERIAL,
1435 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1436 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1437
1438 /* Baanto multitouch devices */
1439 { .driver_data = MT_CLS_NSMU,
1440 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1441 USB_DEVICE_ID_BAANTO_MT_190W2) },
1442
1443 /* Cando panels */
1444 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1445 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1446 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1447 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1448 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1449 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1450
1451 /* Chunghwa Telecom touch panels */
1452 { .driver_data = MT_CLS_NSMU,
1453 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1454 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1455
1456 /* CJTouch panels */
1457 { .driver_data = MT_CLS_NSMU,
1458 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1459 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1460 { .driver_data = MT_CLS_NSMU,
1461 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1462 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1463
1464 /* CVTouch panels */
1465 { .driver_data = MT_CLS_NSMU,
1466 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1467 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1468
1469 /* eGalax devices (resistive) */
1470 { .driver_data = MT_CLS_EGALAX,
1471 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1472 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1473 { .driver_data = MT_CLS_EGALAX,
1474 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1475 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1476
1477 /* eGalax devices (capacitive) */
1478 { .driver_data = MT_CLS_EGALAX_SERIAL,
1479 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1480 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1481 { .driver_data = MT_CLS_EGALAX,
1482 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1483 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1484 { .driver_data = MT_CLS_EGALAX_SERIAL,
1485 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1486 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1487 { .driver_data = MT_CLS_EGALAX_SERIAL,
1488 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1489 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1490 { .driver_data = MT_CLS_EGALAX_SERIAL,
1491 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1492 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1493 { .driver_data = MT_CLS_EGALAX_SERIAL,
1494 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1495 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1496 { .driver_data = MT_CLS_EGALAX,
1497 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1498 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1499 { .driver_data = MT_CLS_EGALAX,
1500 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1501 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1502 { .driver_data = MT_CLS_EGALAX_SERIAL,
1503 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1504 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1505 { .driver_data = MT_CLS_EGALAX,
1506 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1507 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1508 { .driver_data = MT_CLS_EGALAX,
1509 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1510 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1511 { .driver_data = MT_CLS_EGALAX,
1512 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1513 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1514 { .driver_data = MT_CLS_EGALAX,
1515 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1516 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1517 { .driver_data = MT_CLS_EGALAX_SERIAL,
1518 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1519 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1520 { .driver_data = MT_CLS_EGALAX_SERIAL,
1521 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1522 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1523 { .driver_data = MT_CLS_EGALAX_SERIAL,
1524 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1525 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1526
1527 /* Elitegroup panel */
1528 { .driver_data = MT_CLS_SERIAL,
1529 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1530 USB_DEVICE_ID_ELITEGROUP_05D8) },
1531
1532 /* Flatfrog Panels */
1533 { .driver_data = MT_CLS_FLATFROG,
1534 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1535 USB_DEVICE_ID_MULTITOUCH_3200) },
1536
1537 /* FocalTech Panels */
1538 { .driver_data = MT_CLS_SERIAL,
1539 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1540 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1541
1542 /* GeneralTouch panel */
1543 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1544 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1545 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1546 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1547 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1548 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1549 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1550 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1551 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1552 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1553 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1554 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1555 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1556 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1557 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1558 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1559 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1560 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1561 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1562 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1563 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1564
1565 /* Gametel game controller */
1566 { .driver_data = MT_CLS_NSMU,
1567 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1568 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1569
1570 /* GoodTouch panels */
1571 { .driver_data = MT_CLS_NSMU,
1572 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1573 USB_DEVICE_ID_GOODTOUCH_000f) },
1574
1575 /* Hanvon panels */
1576 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1577 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1578 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1579
1580 /* Ilitek dual touch panel */
1581 { .driver_data = MT_CLS_NSMU,
1582 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1583 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1584
1585 /* LG Melfas panel */
1586 { .driver_data = MT_CLS_LG,
1587 HID_USB_DEVICE(USB_VENDOR_ID_LG,
1588 USB_DEVICE_ID_LG_MELFAS_MT) },
1589
1590 /* MosArt panels */
1591 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1592 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1593 USB_DEVICE_ID_ASUS_T91MT)},
1594 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1595 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1596 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1597 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1598 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1599 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1600
1601 /* Panasonic panels */
1602 { .driver_data = MT_CLS_PANASONIC,
1603 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1604 USB_DEVICE_ID_PANABOARD_UBT780) },
1605 { .driver_data = MT_CLS_PANASONIC,
1606 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1607 USB_DEVICE_ID_PANABOARD_UBT880) },
1608
1609 /* Novatek Panel */
1610 { .driver_data = MT_CLS_NSMU,
1611 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1612 USB_DEVICE_ID_NOVATEK_PCT) },
1613
1614 /* Ntrig Panel */
1615 { .driver_data = MT_CLS_NSMU,
1616 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1617 USB_VENDOR_ID_NTRIG, 0x1b05) },
1618
1619 /* PixArt optical touch screen */
1620 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1621 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1622 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1623 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1624 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1625 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1626 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1627 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1628 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1629
1630 /* PixCir-based panels */
1631 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1632 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1633 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1634
1635 /* Quanta-based panels */
1636 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1637 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1638 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1639
1640 /* Stantum panels */
1641 { .driver_data = MT_CLS_CONFIDENCE,
1642 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1643 USB_DEVICE_ID_MTP_STM)},
1644
1645 /* TopSeed panels */
1646 { .driver_data = MT_CLS_TOPSEED,
1647 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1648 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1649
1650 /* Touch International panels */
1651 { .driver_data = MT_CLS_NSMU,
1652 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1653 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1654
1655 /* Unitec panels */
1656 { .driver_data = MT_CLS_NSMU,
1657 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1658 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1659 { .driver_data = MT_CLS_NSMU,
1660 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1661 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1662
1663 /* VTL panels */
1664 { .driver_data = MT_CLS_VTL,
1665 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1666 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1667
1668 /* Wistron panels */
1669 { .driver_data = MT_CLS_NSMU,
1670 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1671 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1672
1673 /* XAT */
1674 { .driver_data = MT_CLS_NSMU,
1675 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1676 USB_DEVICE_ID_XAT_CSR) },
1677
1678 /* Xiroku */
1679 { .driver_data = MT_CLS_NSMU,
1680 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1681 USB_DEVICE_ID_XIROKU_SPX) },
1682 { .driver_data = MT_CLS_NSMU,
1683 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1684 USB_DEVICE_ID_XIROKU_MPX) },
1685 { .driver_data = MT_CLS_NSMU,
1686 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1687 USB_DEVICE_ID_XIROKU_CSR) },
1688 { .driver_data = MT_CLS_NSMU,
1689 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1690 USB_DEVICE_ID_XIROKU_SPX1) },
1691 { .driver_data = MT_CLS_NSMU,
1692 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1693 USB_DEVICE_ID_XIROKU_MPX1) },
1694 { .driver_data = MT_CLS_NSMU,
1695 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1696 USB_DEVICE_ID_XIROKU_CSR1) },
1697 { .driver_data = MT_CLS_NSMU,
1698 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1699 USB_DEVICE_ID_XIROKU_SPX2) },
1700 { .driver_data = MT_CLS_NSMU,
1701 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1702 USB_DEVICE_ID_XIROKU_MPX2) },
1703 { .driver_data = MT_CLS_NSMU,
1704 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1705 USB_DEVICE_ID_XIROKU_CSR2) },
1706
1707 /* Google MT devices */
1708 { .driver_data = MT_CLS_GOOGLE,
1709 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
1710 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
1711
1712 /* Generic MT device */
1713 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1714
1715 /* Generic Win 8 certified MT device */
1716 { .driver_data = MT_CLS_WIN_8,
1717 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1718 HID_ANY_ID, HID_ANY_ID) },
1719 { }
1720 };
1721 MODULE_DEVICE_TABLE(hid, mt_devices);
1722
1723 static const struct hid_usage_id mt_grabbed_usages[] = {
1724 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1725 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1726 };
1727
1728 static struct hid_driver mt_driver = {
1729 .name = "hid-multitouch",
1730 .id_table = mt_devices,
1731 .probe = mt_probe,
1732 .remove = mt_remove,
1733 .input_mapping = mt_input_mapping,
1734 .input_mapped = mt_input_mapped,
1735 .input_configured = mt_input_configured,
1736 .feature_mapping = mt_feature_mapping,
1737 .usage_table = mt_grabbed_usages,
1738 .event = mt_event,
1739 .report = mt_report,
1740 #ifdef CONFIG_PM
1741 .reset_resume = mt_reset_resume,
1742 .resume = mt_resume,
1743 #endif
1744 };
1745 module_hid_driver(mt_driver);
Linux with added FPC-III support