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