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Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / drivers / hid / hid-multitouch.c
blobfb6f1f4472795700c1f12889c405b9350b4ebcb0
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 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */
112 __s16 inputmode_index; /* InputMode HID feature index in the report */
113 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature,
114 -1 if non-existent */
115 __u8 inputmode_value; /* InputMode HID feature value */
116 __u8 num_received; /* how many contacts we received */
117 __u8 num_expected; /* expected last contact index */
118 __u8 maxcontacts;
119 __u8 touches_by_report; /* how many touches are present in one report:
120 * 1 means we should use a serial protocol
121 * > 1 means hybrid (multitouch) protocol */
122 __u8 buttons_count; /* number of physical buttons per touchpad */
123 bool is_buttonpad; /* is this device a button pad? */
124 bool serial_maybe; /* need to check for serial protocol */
125 bool curvalid; /* is the current contact valid? */
126 unsigned mt_flags; /* flags to pass to input-mt */
127 };
128
129 static void mt_post_parse_default_settings(struct mt_device *td);
130 static void mt_post_parse(struct mt_device *td);
131
132 /* classes of device behavior */
133 #define MT_CLS_DEFAULT 0x0001
134
135 #define MT_CLS_SERIAL 0x0002
136 #define MT_CLS_CONFIDENCE 0x0003
137 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
138 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
139 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
140 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
141 /* reserved 0x0008 */
142 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
143 #define MT_CLS_NSMU 0x000a
144 /* reserved 0x0010 */
145 /* reserved 0x0011 */
146 #define MT_CLS_WIN_8 0x0012
147 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
148
149 /* vendor specific classes */
150 #define MT_CLS_3M 0x0101
151 /* reserved 0x0102 */
152 #define MT_CLS_EGALAX 0x0103
153 #define MT_CLS_EGALAX_SERIAL 0x0104
154 #define MT_CLS_TOPSEED 0x0105
155 #define MT_CLS_PANASONIC 0x0106
156 #define MT_CLS_FLATFROG 0x0107
157 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
158 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
159 #define MT_CLS_VTL 0x0110
160
161 #define MT_DEFAULT_MAXCONTACT 10
162 #define MT_MAX_MAXCONTACT 250
163
164 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
165 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
166
167 /*
168 * these device-dependent functions determine what slot corresponds
169 * to a valid contact that was just read.
170 */
171
172 static int cypress_compute_slot(struct mt_device *td)
173 {
174 if (td->curdata.contactid != 0 || td->num_received == 0)
175 return td->curdata.contactid;
176 else
177 return -1;
178 }
179
180 static struct mt_class mt_classes[] = {
181 { .name = MT_CLS_DEFAULT,
182 .quirks = MT_QUIRK_ALWAYS_VALID |
183 MT_QUIRK_CONTACT_CNT_ACCURATE },
184 { .name = MT_CLS_NSMU,
185 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
186 { .name = MT_CLS_SERIAL,
187 .quirks = MT_QUIRK_ALWAYS_VALID},
188 { .name = MT_CLS_CONFIDENCE,
189 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
190 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
191 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
192 MT_QUIRK_SLOT_IS_CONTACTID },
193 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
194 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
195 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
196 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
197 .quirks = MT_QUIRK_VALID_IS_INRANGE |
198 MT_QUIRK_SLOT_IS_CONTACTID,
199 .maxcontacts = 2 },
200 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
201 .quirks = MT_QUIRK_VALID_IS_INRANGE |
202 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
203 .maxcontacts = 2 },
204 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
205 .quirks = MT_QUIRK_VALID_IS_INRANGE |
206 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
207 { .name = MT_CLS_WIN_8,
208 .quirks = MT_QUIRK_ALWAYS_VALID |
209 MT_QUIRK_IGNORE_DUPLICATES |
210 MT_QUIRK_HOVERING |
211 MT_QUIRK_CONTACT_CNT_ACCURATE },
212 { .name = MT_CLS_EXPORT_ALL_INPUTS,
213 .quirks = MT_QUIRK_ALWAYS_VALID |
214 MT_QUIRK_CONTACT_CNT_ACCURATE,
215 .export_all_inputs = true },
216
217 /*
218 * vendor specific classes
219 */
220 { .name = MT_CLS_3M,
221 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
222 MT_QUIRK_SLOT_IS_CONTACTID,
223 .sn_move = 2048,
224 .sn_width = 128,
225 .sn_height = 128,
226 .maxcontacts = 60,
227 },
228 { .name = MT_CLS_EGALAX,
229 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
230 MT_QUIRK_VALID_IS_INRANGE,
231 .sn_move = 4096,
232 .sn_pressure = 32,
233 },
234 { .name = MT_CLS_EGALAX_SERIAL,
235 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
236 MT_QUIRK_ALWAYS_VALID,
237 .sn_move = 4096,
238 .sn_pressure = 32,
239 },
240 { .name = MT_CLS_TOPSEED,
241 .quirks = MT_QUIRK_ALWAYS_VALID,
242 .is_indirect = true,
243 .maxcontacts = 2,
244 },
245 { .name = MT_CLS_PANASONIC,
246 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
247 .maxcontacts = 4 },
248 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
249 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
250 MT_QUIRK_VALID_IS_INRANGE |
251 MT_QUIRK_SLOT_IS_CONTACTID,
252 .maxcontacts = 2
253 },
254 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
255 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
256 MT_QUIRK_SLOT_IS_CONTACTID
257 },
258
259 { .name = MT_CLS_FLATFROG,
260 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
261 MT_QUIRK_NO_AREA,
262 .sn_move = 2048,
263 .maxcontacts = 40,
264 },
265 { .name = MT_CLS_VTL,
266 .quirks = MT_QUIRK_ALWAYS_VALID |
267 MT_QUIRK_CONTACT_CNT_ACCURATE |
268 MT_QUIRK_FORCE_GET_FEATURE,
269 },
270 { }
271 };
272
273 static ssize_t mt_show_quirks(struct device *dev,
274 struct device_attribute *attr,
275 char *buf)
276 {
277 struct hid_device *hdev = to_hid_device(dev);
278 struct mt_device *td = hid_get_drvdata(hdev);
279
280 return sprintf(buf, "%u\n", td->mtclass.quirks);
281 }
282
283 static ssize_t mt_set_quirks(struct device *dev,
284 struct device_attribute *attr,
285 const char *buf, size_t count)
286 {
287 struct hid_device *hdev = to_hid_device(dev);
288 struct mt_device *td = hid_get_drvdata(hdev);
289
290 unsigned long val;
291
292 if (kstrtoul(buf, 0, &val))
293 return -EINVAL;
294
295 td->mtclass.quirks = val;
296
297 if (td->cc_index < 0)
298 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
299
300 return count;
301 }
302
303 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
304
305 static struct attribute *sysfs_attrs[] = {
306 &dev_attr_quirks.attr,
307 NULL
308 };
309
310 static struct attribute_group mt_attribute_group = {
311 .attrs = sysfs_attrs
312 };
313
314 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
315 {
316 struct mt_device *td = hid_get_drvdata(hdev);
317 int ret, size = hid_report_len(report);
318 u8 *buf;
319
320 /*
321 * Only fetch the feature report if initial reports are not already
322 * been retrieved. Currently this is only done for Windows 8 touch
323 * devices.
324 */
325 if (!(hdev->quirks & HID_QUIRK_NO_INIT_REPORTS))
326 return;
327 if (td->mtclass.name != MT_CLS_WIN_8)
328 return;
329
330 buf = hid_alloc_report_buf(report, GFP_KERNEL);
331 if (!buf)
332 return;
333
334 ret = hid_hw_raw_request(hdev, report->id, buf, size,
335 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
336 if (ret < 0) {
337 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
338 report->id);
339 } else {
340 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
341 size, 0);
342 if (ret)
343 dev_warn(&hdev->dev, "failed to report feature\n");
344 }
345
346 kfree(buf);
347 }
348
349 static void mt_feature_mapping(struct hid_device *hdev,
350 struct hid_field *field, struct hid_usage *usage)
351 {
352 struct mt_device *td = hid_get_drvdata(hdev);
353
354 switch (usage->hid) {
355 case HID_DG_INPUTMODE:
356 /* Ignore if value index is out of bounds. */
357 if (usage->usage_index >= field->report_count) {
358 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
359 break;
360 }
361
362 if (td->inputmode < 0) {
363 td->inputmode = field->report->id;
364 td->inputmode_index = usage->usage_index;
365 } else {
366 /*
367 * Some elan panels wrongly declare 2 input mode
368 * features, and silently ignore when we set the
369 * value in the second field. Skip the second feature
370 * and hope for the best.
371 */
372 dev_info(&hdev->dev,
373 "Ignoring the extra HID_DG_INPUTMODE\n");
374 }
375
376 break;
377 case HID_DG_CONTACTMAX:
378 mt_get_feature(hdev, field->report);
379
380 td->maxcontact_report_id = field->report->id;
381 td->maxcontacts = field->value[0];
382 if (!td->maxcontacts &&
383 field->logical_maximum <= MT_MAX_MAXCONTACT)
384 td->maxcontacts = field->logical_maximum;
385 if (td->mtclass.maxcontacts)
386 /* check if the maxcontacts is given by the class */
387 td->maxcontacts = td->mtclass.maxcontacts;
388
389 break;
390 case HID_DG_BUTTONTYPE:
391 if (usage->usage_index >= field->report_count) {
392 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
393 break;
394 }
395
396 mt_get_feature(hdev, field->report);
397 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
398 td->is_buttonpad = true;
399
400 break;
401 case 0xff0000c5:
402 /* Retrieve the Win8 blob once to enable some devices */
403 if (usage->usage_index == 0)
404 mt_get_feature(hdev, field->report);
405 break;
406 }
407 }
408
409 static void set_abs(struct input_dev *input, unsigned int code,
410 struct hid_field *field, int snratio)
411 {
412 int fmin = field->logical_minimum;
413 int fmax = field->logical_maximum;
414 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
415 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
416 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
417 }
418
419 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
420 struct hid_input *hi)
421 {
422 struct mt_fields *f = td->fields;
423
424 if (f->length >= HID_MAX_FIELDS)
425 return;
426
427 f->usages[f->length++] = usage->hid;
428 }
429
430 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
431 struct hid_field *field, struct hid_usage *usage,
432 unsigned long **bit, int *max)
433 {
434 struct mt_device *td = hid_get_drvdata(hdev);
435 struct mt_class *cls = &td->mtclass;
436 int code;
437 struct hid_usage *prev_usage = NULL;
438
439 if (field->application == HID_DG_TOUCHSCREEN)
440 td->mt_flags |= INPUT_MT_DIRECT;
441
442 /*
443 * Model touchscreens providing buttons as touchpads.
444 */
445 if (field->application == HID_DG_TOUCHPAD ||
446 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
447 td->mt_flags |= INPUT_MT_POINTER;
448 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
449 }
450
451 /* count the buttons on touchpads */
452 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
453 td->buttons_count++;
454
455 if (usage->usage_index)
456 prev_usage = &field->usage[usage->usage_index - 1];
457
458 switch (usage->hid & HID_USAGE_PAGE) {
459
460 case HID_UP_GENDESK:
461 switch (usage->hid) {
462 case HID_GD_X:
463 if (prev_usage && (prev_usage->hid == usage->hid)) {
464 hid_map_usage(hi, usage, bit, max,
465 EV_ABS, ABS_MT_TOOL_X);
466 set_abs(hi->input, ABS_MT_TOOL_X, field,
467 cls->sn_move);
468 } else {
469 hid_map_usage(hi, usage, bit, max,
470 EV_ABS, ABS_MT_POSITION_X);
471 set_abs(hi->input, ABS_MT_POSITION_X, field,
472 cls->sn_move);
473 }
474
475 mt_store_field(usage, td, hi);
476 return 1;
477 case HID_GD_Y:
478 if (prev_usage && (prev_usage->hid == usage->hid)) {
479 hid_map_usage(hi, usage, bit, max,
480 EV_ABS, ABS_MT_TOOL_Y);
481 set_abs(hi->input, ABS_MT_TOOL_Y, field,
482 cls->sn_move);
483 } else {
484 hid_map_usage(hi, usage, bit, max,
485 EV_ABS, ABS_MT_POSITION_Y);
486 set_abs(hi->input, ABS_MT_POSITION_Y, field,
487 cls->sn_move);
488 }
489
490 mt_store_field(usage, td, hi);
491 return 1;
492 }
493 return 0;
494
495 case HID_UP_DIGITIZER:
496 switch (usage->hid) {
497 case HID_DG_INRANGE:
498 if (cls->quirks & MT_QUIRK_HOVERING) {
499 hid_map_usage(hi, usage, bit, max,
500 EV_ABS, ABS_MT_DISTANCE);
501 input_set_abs_params(hi->input,
502 ABS_MT_DISTANCE, 0, 1, 0, 0);
503 }
504 mt_store_field(usage, td, hi);
505 return 1;
506 case HID_DG_CONFIDENCE:
507 if (cls->name == MT_CLS_WIN_8 &&
508 field->application == HID_DG_TOUCHPAD)
509 cls->quirks |= MT_QUIRK_CONFIDENCE;
510 mt_store_field(usage, td, hi);
511 return 1;
512 case HID_DG_TIPSWITCH:
513 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
514 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
515 mt_store_field(usage, td, hi);
516 return 1;
517 case HID_DG_CONTACTID:
518 mt_store_field(usage, td, hi);
519 td->touches_by_report++;
520 td->mt_report_id = field->report->id;
521 return 1;
522 case HID_DG_WIDTH:
523 hid_map_usage(hi, usage, bit, max,
524 EV_ABS, ABS_MT_TOUCH_MAJOR);
525 if (!(cls->quirks & MT_QUIRK_NO_AREA))
526 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
527 cls->sn_width);
528 mt_store_field(usage, td, hi);
529 return 1;
530 case HID_DG_HEIGHT:
531 hid_map_usage(hi, usage, bit, max,
532 EV_ABS, ABS_MT_TOUCH_MINOR);
533 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
534 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
535 cls->sn_height);
536 input_set_abs_params(hi->input,
537 ABS_MT_ORIENTATION, 0, 1, 0, 0);
538 }
539 mt_store_field(usage, td, hi);
540 return 1;
541 case HID_DG_TIPPRESSURE:
542 hid_map_usage(hi, usage, bit, max,
543 EV_ABS, ABS_MT_PRESSURE);
544 set_abs(hi->input, ABS_MT_PRESSURE, field,
545 cls->sn_pressure);
546 mt_store_field(usage, td, hi);
547 return 1;
548 case HID_DG_CONTACTCOUNT:
549 /* Ignore if indexes are out of bounds. */
550 if (field->index >= field->report->maxfield ||
551 usage->usage_index >= field->report_count)
552 return 1;
553 td->cc_index = field->index;
554 td->cc_value_index = usage->usage_index;
555 return 1;
556 case HID_DG_CONTACTMAX:
557 /* we don't set td->last_slot_field as contactcount and
558 * contact max are global to the report */
559 return -1;
560 case HID_DG_TOUCH:
561 /* Legacy devices use TIPSWITCH and not TOUCH.
562 * Let's just ignore this field. */
563 return -1;
564 }
565 /* let hid-input decide for the others */
566 return 0;
567
568 case HID_UP_BUTTON:
569 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
570 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
571 input_set_capability(hi->input, EV_KEY, code);
572 return 1;
573
574 case 0xff000000:
575 /* we do not want to map these: no input-oriented meaning */
576 return -1;
577 }
578
579 return 0;
580 }
581
582 static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi,
583 struct hid_field *field, struct hid_usage *usage,
584 unsigned long **bit, int *max)
585 {
586 if (usage->type == EV_KEY || usage->type == EV_ABS)
587 set_bit(usage->type, hi->input->evbit);
588
589 return -1;
590 }
591
592 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
593 {
594 __s32 quirks = td->mtclass.quirks;
595
596 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
597 return td->curdata.contactid;
598
599 if (quirks & MT_QUIRK_CYPRESS)
600 return cypress_compute_slot(td);
601
602 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
603 return td->num_received;
604
605 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
606 return td->curdata.contactid - 1;
607
608 return input_mt_get_slot_by_key(input, td->curdata.contactid);
609 }
610
611 /*
612 * this function is called when a whole contact has been processed,
613 * so that it can assign it to a slot and store the data there
614 */
615 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
616 {
617 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
618 td->num_received >= td->num_expected)
619 return;
620
621 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
622 int active;
623 int slotnum = mt_compute_slot(td, input);
624 struct mt_slot *s = &td->curdata;
625 struct input_mt *mt = input->mt;
626
627 if (slotnum < 0 || slotnum >= td->maxcontacts)
628 return;
629
630 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
631 struct input_mt_slot *slot = &mt->slots[slotnum];
632 if (input_mt_is_active(slot) &&
633 input_mt_is_used(mt, slot))
634 return;
635 }
636
637 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE))
638 s->confidence_state = 1;
639 active = (s->touch_state || s->inrange_state) &&
640 s->confidence_state;
641
642 input_mt_slot(input, slotnum);
643 input_mt_report_slot_state(input, MT_TOOL_FINGER, active);
644 if (active) {
645 /* this finger is in proximity of the sensor */
646 int wide = (s->w > s->h);
647 /* divided by two to match visual scale of touch */
648 int major = max(s->w, s->h) >> 1;
649 int minor = min(s->w, s->h) >> 1;
650
651 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
652 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
653 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
654 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
655 input_event(input, EV_ABS, ABS_MT_DISTANCE,
656 !s->touch_state);
657 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
658 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
659 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
660 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
661 }
662 }
663
664 td->num_received++;
665 }
666
667 /*
668 * this function is called when a whole packet has been received and processed,
669 * so that it can decide what to send to the input layer.
670 */
671 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
672 {
673 input_mt_sync_frame(input);
674 input_sync(input);
675 td->num_received = 0;
676 }
677
678 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
679 struct hid_usage *usage, __s32 value)
680 {
681 /* we will handle the hidinput part later, now remains hiddev */
682 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
683 hid->hiddev_hid_event(hid, field, usage, value);
684
685 return 1;
686 }
687
688 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
689 struct hid_usage *usage, __s32 value)
690 {
691 struct mt_device *td = hid_get_drvdata(hid);
692 __s32 quirks = td->mtclass.quirks;
693 struct input_dev *input = field->hidinput->input;
694
695 if (hid->claimed & HID_CLAIMED_INPUT) {
696 switch (usage->hid) {
697 case HID_DG_INRANGE:
698 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
699 td->curvalid = value;
700 if (quirks & MT_QUIRK_HOVERING)
701 td->curdata.inrange_state = value;
702 break;
703 case HID_DG_TIPSWITCH:
704 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
705 td->curvalid = value;
706 td->curdata.touch_state = value;
707 break;
708 case HID_DG_CONFIDENCE:
709 if (quirks & MT_QUIRK_CONFIDENCE)
710 td->curdata.confidence_state = value;
711 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
712 td->curvalid = value;
713 break;
714 case HID_DG_CONTACTID:
715 td->curdata.contactid = value;
716 break;
717 case HID_DG_TIPPRESSURE:
718 td->curdata.p = value;
719 break;
720 case HID_GD_X:
721 if (usage->code == ABS_MT_TOOL_X)
722 td->curdata.cx = value;
723 else
724 td->curdata.x = value;
725 break;
726 case HID_GD_Y:
727 if (usage->code == ABS_MT_TOOL_Y)
728 td->curdata.cy = value;
729 else
730 td->curdata.y = value;
731 break;
732 case HID_DG_WIDTH:
733 td->curdata.w = value;
734 break;
735 case HID_DG_HEIGHT:
736 td->curdata.h = value;
737 break;
738 case HID_DG_CONTACTCOUNT:
739 break;
740 case HID_DG_TOUCH:
741 /* do nothing */
742 break;
743
744 default:
745 if (usage->type)
746 input_event(input, usage->type, usage->code,
747 value);
748 return;
749 }
750
751 if (usage->usage_index + 1 == field->report_count) {
752 /* we only take into account the last report. */
753 if (usage->hid == td->last_slot_field)
754 mt_complete_slot(td, field->hidinput->input);
755 }
756
757 }
758 }
759
760 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
761 {
762 struct mt_device *td = hid_get_drvdata(hid);
763 struct hid_field *field;
764 unsigned count;
765 int r, n;
766
767 /*
768 * Includes multi-packet support where subsequent
769 * packets are sent with zero contactcount.
770 */
771 if (td->cc_index >= 0) {
772 struct hid_field *field = report->field[td->cc_index];
773 int value = field->value[td->cc_value_index];
774 if (value)
775 td->num_expected = value;
776 }
777
778 for (r = 0; r < report->maxfield; r++) {
779 field = report->field[r];
780 count = field->report_count;
781
782 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
783 continue;
784
785 for (n = 0; n < count; n++)
786 mt_process_mt_event(hid, field, &field->usage[n],
787 field->value[n]);
788 }
789
790 if (td->num_received >= td->num_expected)
791 mt_sync_frame(td, report->field[0]->hidinput->input);
792 }
793
794 static int mt_touch_input_configured(struct hid_device *hdev,
795 struct hid_input *hi)
796 {
797 struct mt_device *td = hid_get_drvdata(hdev);
798 struct mt_class *cls = &td->mtclass;
799 struct input_dev *input = hi->input;
800 int ret;
801
802 if (!td->maxcontacts)
803 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
804
805 mt_post_parse(td);
806 if (td->serial_maybe)
807 mt_post_parse_default_settings(td);
808
809 if (cls->is_indirect)
810 td->mt_flags |= INPUT_MT_POINTER;
811
812 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
813 td->mt_flags |= INPUT_MT_DROP_UNUSED;
814
815 /* check for clickpads */
816 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
817 td->is_buttonpad = true;
818
819 if (td->is_buttonpad)
820 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
821
822 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
823 if (ret)
824 return ret;
825
826 td->mt_flags = 0;
827 return 0;
828 }
829
830 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
831 struct hid_field *field, struct hid_usage *usage,
832 unsigned long **bit, int *max)
833 {
834 struct mt_device *td = hid_get_drvdata(hdev);
835
836 /*
837 * If mtclass.export_all_inputs is not set, only map fields from
838 * TouchScreen or TouchPad collections. We need to ignore fields
839 * that belong to other collections such as Mouse that might have
840 * the same GenericDesktop usages.
841 */
842 if (!td->mtclass.export_all_inputs &&
843 field->application != HID_DG_TOUCHSCREEN &&
844 field->application != HID_DG_PEN &&
845 field->application != HID_DG_TOUCHPAD)
846 return -1;
847
848 /*
849 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
850 * for the stylus.
851 * The check for mt_report_id ensures we don't process
852 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
853 * collection, but within the report ID.
854 */
855 if (field->physical == HID_DG_STYLUS)
856 return 0;
857 else if ((field->physical == 0) &&
858 (field->report->id != td->mt_report_id) &&
859 (td->mt_report_id != -1))
860 return 0;
861
862 if (field->application == HID_DG_TOUCHSCREEN ||
863 field->application == HID_DG_TOUCHPAD)
864 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
865
866 /* let hid-core decide for the others */
867 return 0;
868 }
869
870 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
871 struct hid_field *field, struct hid_usage *usage,
872 unsigned long **bit, int *max)
873 {
874 /*
875 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
876 * for the stylus.
877 */
878 if (field->physical == HID_DG_STYLUS)
879 return 0;
880
881 if (field->application == HID_DG_TOUCHSCREEN ||
882 field->application == HID_DG_TOUCHPAD)
883 return mt_touch_input_mapped(hdev, hi, field, usage, bit, max);
884
885 /* let hid-core decide for the others */
886 return 0;
887 }
888
889 static int mt_event(struct hid_device *hid, struct hid_field *field,
890 struct hid_usage *usage, __s32 value)
891 {
892 struct mt_device *td = hid_get_drvdata(hid);
893
894 if (field->report->id == td->mt_report_id)
895 return mt_touch_event(hid, field, usage, value);
896
897 return 0;
898 }
899
900 static void mt_report(struct hid_device *hid, struct hid_report *report)
901 {
902 struct mt_device *td = hid_get_drvdata(hid);
903 struct hid_field *field = report->field[0];
904
905 if (!(hid->claimed & HID_CLAIMED_INPUT))
906 return;
907
908 if (report->id == td->mt_report_id)
909 return mt_touch_report(hid, report);
910
911 if (field && field->hidinput && field->hidinput->input)
912 input_sync(field->hidinput->input);
913 }
914
915 static void mt_set_input_mode(struct hid_device *hdev)
916 {
917 struct mt_device *td = hid_get_drvdata(hdev);
918 struct hid_report *r;
919 struct hid_report_enum *re;
920 struct mt_class *cls = &td->mtclass;
921 char *buf;
922 int report_len;
923
924 if (td->inputmode < 0)
925 return;
926
927 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
928 r = re->report_id_hash[td->inputmode];
929 if (r) {
930 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
931 report_len = hid_report_len(r);
932 buf = hid_alloc_report_buf(r, GFP_KERNEL);
933 if (!buf) {
934 hid_err(hdev, "failed to allocate buffer for report\n");
935 return;
936 }
937 hid_hw_raw_request(hdev, r->id, buf, report_len,
938 HID_FEATURE_REPORT,
939 HID_REQ_GET_REPORT);
940 kfree(buf);
941 }
942 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
943 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
944 }
945 }
946
947 static void mt_set_maxcontacts(struct hid_device *hdev)
948 {
949 struct mt_device *td = hid_get_drvdata(hdev);
950 struct hid_report *r;
951 struct hid_report_enum *re;
952 int fieldmax, max;
953
954 if (td->maxcontact_report_id < 0)
955 return;
956
957 if (!td->mtclass.maxcontacts)
958 return;
959
960 re = &hdev->report_enum[HID_FEATURE_REPORT];
961 r = re->report_id_hash[td->maxcontact_report_id];
962 if (r) {
963 max = td->mtclass.maxcontacts;
964 fieldmax = r->field[0]->logical_maximum;
965 max = min(fieldmax, max);
966 if (r->field[0]->value[0] != max) {
967 r->field[0]->value[0] = max;
968 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
969 }
970 }
971 }
972
973 static void mt_post_parse_default_settings(struct mt_device *td)
974 {
975 __s32 quirks = td->mtclass.quirks;
976
977 /* unknown serial device needs special quirks */
978 if (td->touches_by_report == 1) {
979 quirks |= MT_QUIRK_ALWAYS_VALID;
980 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
981 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
982 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
983 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
984 }
985
986 td->mtclass.quirks = quirks;
987 }
988
989 static void mt_post_parse(struct mt_device *td)
990 {
991 struct mt_fields *f = td->fields;
992 struct mt_class *cls = &td->mtclass;
993
994 if (td->touches_by_report > 0) {
995 int field_count_per_touch = f->length / td->touches_by_report;
996 td->last_slot_field = f->usages[field_count_per_touch - 1];
997 }
998
999 if (td->cc_index < 0)
1000 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1001 }
1002
1003 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1004 {
1005 struct mt_device *td = hid_get_drvdata(hdev);
1006 char *name;
1007 const char *suffix = NULL;
1008 struct hid_field *field = hi->report->field[0];
1009 int ret;
1010
1011 if (hi->report->id == td->mt_report_id) {
1012 ret = mt_touch_input_configured(hdev, hi);
1013 if (ret)
1014 return ret;
1015 }
1016
1017 /*
1018 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1019 * for the stylus. Check this first, and then rely on the application
1020 * field.
1021 */
1022 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
1023 suffix = "Pen";
1024 /* force BTN_STYLUS to allow tablet matching in udev */
1025 __set_bit(BTN_STYLUS, hi->input->keybit);
1026 } else {
1027 switch (field->application) {
1028 case HID_GD_KEYBOARD:
1029 suffix = "Keyboard";
1030 break;
1031 case HID_GD_KEYPAD:
1032 suffix = "Keypad";
1033 break;
1034 case HID_GD_MOUSE:
1035 suffix = "Mouse";
1036 break;
1037 case HID_DG_STYLUS:
1038 suffix = "Pen";
1039 /* force BTN_STYLUS to allow tablet matching in udev */
1040 __set_bit(BTN_STYLUS, hi->input->keybit);
1041 break;
1042 case HID_DG_TOUCHSCREEN:
1043 /* we do not set suffix = "Touchscreen" */
1044 break;
1045 case HID_DG_TOUCHPAD:
1046 suffix = "Touchpad";
1047 break;
1048 case HID_GD_SYSTEM_CONTROL:
1049 suffix = "System Control";
1050 break;
1051 case HID_CP_CONSUMER_CONTROL:
1052 suffix = "Consumer Control";
1053 break;
1054 default:
1055 suffix = "UNKNOWN";
1056 break;
1057 }
1058 }
1059
1060 if (suffix) {
1061 name = devm_kzalloc(&hi->input->dev,
1062 strlen(hdev->name) + strlen(suffix) + 2,
1063 GFP_KERNEL);
1064 if (name) {
1065 sprintf(name, "%s %s", hdev->name, suffix);
1066 hi->input->name = name;
1067 }
1068 }
1069
1070 return 0;
1071 }
1072
1073 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1074 {
1075 int ret, i;
1076 struct mt_device *td;
1077 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1078
1079 for (i = 0; mt_classes[i].name ; i++) {
1080 if (id->driver_data == mt_classes[i].name) {
1081 mtclass = &(mt_classes[i]);
1082 break;
1083 }
1084 }
1085
1086 /* This allows the driver to correctly support devices
1087 * that emit events over several HID messages.
1088 */
1089 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1090
1091 /*
1092 * This allows the driver to handle different input sensors
1093 * that emits events through different reports on the same HID
1094 * device.
1095 */
1096 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1097 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1098
1099 /*
1100 * Handle special quirks for Windows 8 certified devices.
1101 */
1102 if (id->group == HID_GROUP_MULTITOUCH_WIN_8)
1103 /*
1104 * Some multitouch screens do not like to be polled for input
1105 * reports. Fortunately, the Win8 spec says that all touches
1106 * should be sent during each report, making the initialization
1107 * of input reports unnecessary.
1108 *
1109 * In addition some touchpads do not behave well if we read
1110 * all feature reports from them. Instead we prevent
1111 * initial report fetching and then selectively fetch each
1112 * report we are interested in.
1113 */
1114 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1115
1116 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1117 if (!td) {
1118 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1119 return -ENOMEM;
1120 }
1121 td->mtclass = *mtclass;
1122 td->inputmode = -1;
1123 td->maxcontact_report_id = -1;
1124 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1125 td->cc_index = -1;
1126 td->mt_report_id = -1;
1127 hid_set_drvdata(hdev, td);
1128
1129 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1130 GFP_KERNEL);
1131 if (!td->fields) {
1132 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
1133 return -ENOMEM;
1134 }
1135
1136 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1137 td->serial_maybe = true;
1138
1139 ret = hid_parse(hdev);
1140 if (ret != 0)
1141 return ret;
1142
1143 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1144 if (ret)
1145 return ret;
1146
1147 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1148 if (ret)
1149 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1150 hdev->name);
1151
1152 mt_set_maxcontacts(hdev);
1153 mt_set_input_mode(hdev);
1154
1155 /* release .fields memory as it is not used anymore */
1156 devm_kfree(&hdev->dev, td->fields);
1157 td->fields = NULL;
1158
1159 return 0;
1160 }
1161
1162 #ifdef CONFIG_PM
1163 static void mt_release_contacts(struct hid_device *hid)
1164 {
1165 struct hid_input *hidinput;
1166
1167 list_for_each_entry(hidinput, &hid->inputs, list) {
1168 struct input_dev *input_dev = hidinput->input;
1169 struct input_mt *mt = input_dev->mt;
1170 int i;
1171
1172 if (mt) {
1173 for (i = 0; i < mt->num_slots; i++) {
1174 input_mt_slot(input_dev, i);
1175 input_mt_report_slot_state(input_dev,
1176 MT_TOOL_FINGER,
1177 false);
1178 }
1179 input_mt_sync_frame(input_dev);
1180 input_sync(input_dev);
1181 }
1182 }
1183 }
1184
1185 static int mt_reset_resume(struct hid_device *hdev)
1186 {
1187 mt_release_contacts(hdev);
1188 mt_set_maxcontacts(hdev);
1189 mt_set_input_mode(hdev);
1190 return 0;
1191 }
1192
1193 static int mt_resume(struct hid_device *hdev)
1194 {
1195 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1196 * It should be safe to send it to other devices too.
1197 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1198
1199 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1200
1201 return 0;
1202 }
1203 #endif
1204
1205 static void mt_remove(struct hid_device *hdev)
1206 {
1207 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1208 hid_hw_stop(hdev);
1209 }
1210
1211 /*
1212 * This list contains only:
1213 * - VID/PID of products not working with the default multitouch handling
1214 * - 2 generic rules.
1215 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1216 */
1217 static const struct hid_device_id mt_devices[] = {
1218
1219 /* 3M panels */
1220 { .driver_data = MT_CLS_3M,
1221 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1222 USB_DEVICE_ID_3M1968) },
1223 { .driver_data = MT_CLS_3M,
1224 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1225 USB_DEVICE_ID_3M2256) },
1226 { .driver_data = MT_CLS_3M,
1227 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1228 USB_DEVICE_ID_3M3266) },
1229
1230 /* Anton devices */
1231 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1232 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1233 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1234
1235 /* Atmel panels */
1236 { .driver_data = MT_CLS_SERIAL,
1237 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1238 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1239
1240 /* Baanto multitouch devices */
1241 { .driver_data = MT_CLS_NSMU,
1242 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1243 USB_DEVICE_ID_BAANTO_MT_190W2) },
1244
1245 /* Cando panels */
1246 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1247 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1248 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1249 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1250 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1251 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1252
1253 /* Chunghwa Telecom touch panels */
1254 { .driver_data = MT_CLS_NSMU,
1255 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1256 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1257
1258 /* CJTouch panels */
1259 { .driver_data = MT_CLS_NSMU,
1260 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1261 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1262 { .driver_data = MT_CLS_NSMU,
1263 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1264 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1265
1266 /* CVTouch panels */
1267 { .driver_data = MT_CLS_NSMU,
1268 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1269 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1270
1271 /* eGalax devices (resistive) */
1272 { .driver_data = MT_CLS_EGALAX,
1273 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1274 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1275 { .driver_data = MT_CLS_EGALAX,
1276 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1277 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1278
1279 /* eGalax devices (capacitive) */
1280 { .driver_data = MT_CLS_EGALAX_SERIAL,
1281 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1282 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1283 { .driver_data = MT_CLS_EGALAX,
1284 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1285 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1286 { .driver_data = MT_CLS_EGALAX_SERIAL,
1287 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1288 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1289 { .driver_data = MT_CLS_EGALAX_SERIAL,
1290 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1291 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1292 { .driver_data = MT_CLS_EGALAX_SERIAL,
1293 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1294 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1295 { .driver_data = MT_CLS_EGALAX_SERIAL,
1296 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1297 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1298 { .driver_data = MT_CLS_EGALAX,
1299 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1300 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1301 { .driver_data = MT_CLS_EGALAX,
1302 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1303 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1304 { .driver_data = MT_CLS_EGALAX_SERIAL,
1305 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1306 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1307 { .driver_data = MT_CLS_EGALAX,
1308 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1309 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1310 { .driver_data = MT_CLS_EGALAX,
1311 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1312 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1313 { .driver_data = MT_CLS_EGALAX,
1314 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1315 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1316 { .driver_data = MT_CLS_EGALAX,
1317 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1318 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1319 { .driver_data = MT_CLS_EGALAX_SERIAL,
1320 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1321 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1322 { .driver_data = MT_CLS_EGALAX_SERIAL,
1323 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1324 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1325 { .driver_data = MT_CLS_EGALAX_SERIAL,
1326 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1327 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1328
1329 /* Elitegroup panel */
1330 { .driver_data = MT_CLS_SERIAL,
1331 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1332 USB_DEVICE_ID_ELITEGROUP_05D8) },
1333
1334 /* Flatfrog Panels */
1335 { .driver_data = MT_CLS_FLATFROG,
1336 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1337 USB_DEVICE_ID_MULTITOUCH_3200) },
1338
1339 /* FocalTech Panels */
1340 { .driver_data = MT_CLS_SERIAL,
1341 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1342 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1343
1344 /* GeneralTouch panel */
1345 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1346 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1347 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1348 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1349 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1350 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1351 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1352 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1353 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1354 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1355 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1356 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1357 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1358 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1359 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1360 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1361 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1362 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1363 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1364 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1365 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1366
1367 /* Gametel game controller */
1368 { .driver_data = MT_CLS_NSMU,
1369 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1370 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1371
1372 /* GoodTouch panels */
1373 { .driver_data = MT_CLS_NSMU,
1374 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1375 USB_DEVICE_ID_GOODTOUCH_000f) },
1376
1377 /* Hanvon panels */
1378 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1379 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1380 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1381
1382 /* Ilitek dual touch panel */
1383 { .driver_data = MT_CLS_NSMU,
1384 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1385 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1386
1387 /* MosArt panels */
1388 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1389 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1390 USB_DEVICE_ID_ASUS_T91MT)},
1391 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1392 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1393 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1394 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1395 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1396 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1397
1398 /* Panasonic panels */
1399 { .driver_data = MT_CLS_PANASONIC,
1400 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1401 USB_DEVICE_ID_PANABOARD_UBT780) },
1402 { .driver_data = MT_CLS_PANASONIC,
1403 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1404 USB_DEVICE_ID_PANABOARD_UBT880) },
1405
1406 /* Novatek Panel */
1407 { .driver_data = MT_CLS_NSMU,
1408 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1409 USB_DEVICE_ID_NOVATEK_PCT) },
1410
1411 /* Ntrig Panel */
1412 { .driver_data = MT_CLS_NSMU,
1413 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1414 USB_VENDOR_ID_NTRIG, 0x1b05) },
1415
1416 /* PixArt optical touch screen */
1417 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1418 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1419 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1420 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1421 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1422 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1423 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1424 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1425 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1426
1427 /* PixCir-based panels */
1428 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1429 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1430 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1431
1432 /* Quanta-based panels */
1433 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1434 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1435 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1436
1437 /* Stantum panels */
1438 { .driver_data = MT_CLS_CONFIDENCE,
1439 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1440 USB_DEVICE_ID_MTP_STM)},
1441
1442 /* TopSeed panels */
1443 { .driver_data = MT_CLS_TOPSEED,
1444 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1445 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1446
1447 /* Touch International panels */
1448 { .driver_data = MT_CLS_NSMU,
1449 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1450 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1451
1452 /* Unitec panels */
1453 { .driver_data = MT_CLS_NSMU,
1454 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1455 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1456 { .driver_data = MT_CLS_NSMU,
1457 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1458 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1459
1460 /* VTL panels */
1461 { .driver_data = MT_CLS_VTL,
1462 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1463 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1464
1465 /* Wistron panels */
1466 { .driver_data = MT_CLS_NSMU,
1467 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1468 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1469
1470 /* XAT */
1471 { .driver_data = MT_CLS_NSMU,
1472 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1473 USB_DEVICE_ID_XAT_CSR) },
1474
1475 /* Xiroku */
1476 { .driver_data = MT_CLS_NSMU,
1477 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1478 USB_DEVICE_ID_XIROKU_SPX) },
1479 { .driver_data = MT_CLS_NSMU,
1480 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1481 USB_DEVICE_ID_XIROKU_MPX) },
1482 { .driver_data = MT_CLS_NSMU,
1483 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1484 USB_DEVICE_ID_XIROKU_CSR) },
1485 { .driver_data = MT_CLS_NSMU,
1486 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1487 USB_DEVICE_ID_XIROKU_SPX1) },
1488 { .driver_data = MT_CLS_NSMU,
1489 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1490 USB_DEVICE_ID_XIROKU_MPX1) },
1491 { .driver_data = MT_CLS_NSMU,
1492 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1493 USB_DEVICE_ID_XIROKU_CSR1) },
1494 { .driver_data = MT_CLS_NSMU,
1495 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1496 USB_DEVICE_ID_XIROKU_SPX2) },
1497 { .driver_data = MT_CLS_NSMU,
1498 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1499 USB_DEVICE_ID_XIROKU_MPX2) },
1500 { .driver_data = MT_CLS_NSMU,
1501 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1502 USB_DEVICE_ID_XIROKU_CSR2) },
1503
1504 /* Generic MT device */
1505 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1506
1507 /* Generic Win 8 certified MT device */
1508 { .driver_data = MT_CLS_WIN_8,
1509 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1510 HID_ANY_ID, HID_ANY_ID) },
1511 { }
1512 };
1513 MODULE_DEVICE_TABLE(hid, mt_devices);
1514
1515 static const struct hid_usage_id mt_grabbed_usages[] = {
1516 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1517 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1518 };
1519
1520 static struct hid_driver mt_driver = {
1521 .name = "hid-multitouch",
1522 .id_table = mt_devices,
1523 .probe = mt_probe,
1524 .remove = mt_remove,
1525 .input_mapping = mt_input_mapping,
1526 .input_mapped = mt_input_mapped,
1527 .input_configured = mt_input_configured,
1528 .feature_mapping = mt_feature_mapping,
1529 .usage_table = mt_grabbed_usages,
1530 .event = mt_event,
1531 .report = mt_report,
1532 #ifdef CONFIG_PM
1533 .reset_resume = mt_reset_resume,
1534 .resume = mt_resume,
1535 #endif
1536 };
1537 module_hid_driver(mt_driver);
CRIS linux kernel tree