]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - drivers/hid/hid-multitouch.c
projects / mirror_ubuntu-artful-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branches 'for-4.11/upstream-fixes', 'for-4.12/accutouch', 'for-4.12/cp2112...
[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 #define MT_QUIRK_FIX_CONST_CONTACT_ID (1 << 14)
72 #define MT_QUIRK_TOUCH_SIZE_SCALING (1 << 15)
73
74 #define MT_INPUTMODE_TOUCHSCREEN 0x02
75 #define MT_INPUTMODE_TOUCHPAD 0x03
76
77 #define MT_BUTTONTYPE_CLICKPAD 0
78
79 struct mt_slot {
80 __s32 x, y, cx, cy, p, w, h;
81 __s32 contactid; /* the device ContactID assigned to this slot */
82 bool touch_state; /* is the touch valid? */
83 bool inrange_state; /* is the finger in proximity of the sensor? */
84 bool confidence_state; /* is the touch made by a finger? */
85 };
86
87 struct mt_class {
88 __s32 name; /* MT_CLS */
89 __s32 quirks;
90 __s32 sn_move; /* Signal/noise ratio for move events */
91 __s32 sn_width; /* Signal/noise ratio for width events */
92 __s32 sn_height; /* Signal/noise ratio for height events */
93 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
94 __u8 maxcontacts;
95 bool is_indirect; /* true for touchpads */
96 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
97 };
98
99 struct mt_fields {
100 unsigned usages[HID_MAX_FIELDS];
101 unsigned int length;
102 };
103
104 struct mt_device {
105 struct mt_slot curdata; /* placeholder of incoming data */
106 struct mt_class mtclass; /* our mt device class */
107 struct mt_fields *fields; /* temporary placeholder for storing the
108 multitouch fields */
109 int cc_index; /* contact count field index in the report */
110 int cc_value_index; /* contact count value index in the field */
111 unsigned last_slot_field; /* the last field of a slot */
112 unsigned mt_report_id; /* the report ID of the multitouch device */
113 unsigned long initial_quirks; /* initial quirks state */
114 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */
115 __s16 inputmode_index; /* InputMode HID feature index in the report */
116 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature,
117 -1 if non-existent */
118 __u8 inputmode_value; /* InputMode HID feature value */
119 __u8 num_received; /* how many contacts we received */
120 __u8 num_expected; /* expected last contact index */
121 __u8 maxcontacts;
122 __u8 touches_by_report; /* how many touches are present in one report:
123 * 1 means we should use a serial protocol
124 * > 1 means hybrid (multitouch) protocol */
125 __u8 buttons_count; /* number of physical buttons per touchpad */
126 bool is_buttonpad; /* is this device a button pad? */
127 bool serial_maybe; /* need to check for serial protocol */
128 bool curvalid; /* is the current contact valid? */
129 unsigned mt_flags; /* flags to pass to input-mt */
130 };
131
132 static void mt_post_parse_default_settings(struct mt_device *td);
133 static void mt_post_parse(struct mt_device *td);
134
135 /* classes of device behavior */
136 #define MT_CLS_DEFAULT 0x0001
137
138 #define MT_CLS_SERIAL 0x0002
139 #define MT_CLS_CONFIDENCE 0x0003
140 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
141 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
142 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
143 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
144 /* reserved 0x0008 */
145 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
146 #define MT_CLS_NSMU 0x000a
147 /* reserved 0x0010 */
148 /* reserved 0x0011 */
149 #define MT_CLS_WIN_8 0x0012
150 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
151
152 /* vendor specific classes */
153 #define MT_CLS_3M 0x0101
154 /* reserved 0x0102 */
155 #define MT_CLS_EGALAX 0x0103
156 #define MT_CLS_EGALAX_SERIAL 0x0104
157 #define MT_CLS_TOPSEED 0x0105
158 #define MT_CLS_PANASONIC 0x0106
159 #define MT_CLS_FLATFROG 0x0107
160 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
161 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
162 #define MT_CLS_LG 0x010a
163 #define MT_CLS_VTL 0x0110
164
165 #define MT_DEFAULT_MAXCONTACT 10
166 #define MT_MAX_MAXCONTACT 250
167
168 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
169 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
170
171 /*
172 * these device-dependent functions determine what slot corresponds
173 * to a valid contact that was just read.
174 */
175
176 static int cypress_compute_slot(struct mt_device *td)
177 {
178 if (td->curdata.contactid != 0 || td->num_received == 0)
179 return td->curdata.contactid;
180 else
181 return -1;
182 }
183
184 static struct mt_class mt_classes[] = {
185 { .name = MT_CLS_DEFAULT,
186 .quirks = MT_QUIRK_ALWAYS_VALID |
187 MT_QUIRK_CONTACT_CNT_ACCURATE },
188 { .name = MT_CLS_NSMU,
189 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
190 { .name = MT_CLS_SERIAL,
191 .quirks = MT_QUIRK_ALWAYS_VALID},
192 { .name = MT_CLS_CONFIDENCE,
193 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
194 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
195 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
196 MT_QUIRK_SLOT_IS_CONTACTID },
197 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
198 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
199 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
200 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
201 .quirks = MT_QUIRK_VALID_IS_INRANGE |
202 MT_QUIRK_SLOT_IS_CONTACTID,
203 .maxcontacts = 2 },
204 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
205 .quirks = MT_QUIRK_VALID_IS_INRANGE |
206 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
207 .maxcontacts = 2 },
208 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
209 .quirks = MT_QUIRK_VALID_IS_INRANGE |
210 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
211 { .name = MT_CLS_WIN_8,
212 .quirks = MT_QUIRK_ALWAYS_VALID |
213 MT_QUIRK_IGNORE_DUPLICATES |
214 MT_QUIRK_HOVERING |
215 MT_QUIRK_CONTACT_CNT_ACCURATE },
216 { .name = MT_CLS_EXPORT_ALL_INPUTS,
217 .quirks = MT_QUIRK_ALWAYS_VALID |
218 MT_QUIRK_CONTACT_CNT_ACCURATE,
219 .export_all_inputs = true },
220
221 /*
222 * vendor specific classes
223 */
224 { .name = MT_CLS_3M,
225 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
226 MT_QUIRK_SLOT_IS_CONTACTID |
227 MT_QUIRK_TOUCH_SIZE_SCALING,
228 .sn_move = 2048,
229 .sn_width = 128,
230 .sn_height = 128,
231 .maxcontacts = 60,
232 },
233 { .name = MT_CLS_EGALAX,
234 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
235 MT_QUIRK_VALID_IS_INRANGE,
236 .sn_move = 4096,
237 .sn_pressure = 32,
238 },
239 { .name = MT_CLS_EGALAX_SERIAL,
240 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
241 MT_QUIRK_ALWAYS_VALID,
242 .sn_move = 4096,
243 .sn_pressure = 32,
244 },
245 { .name = MT_CLS_TOPSEED,
246 .quirks = MT_QUIRK_ALWAYS_VALID,
247 .is_indirect = true,
248 .maxcontacts = 2,
249 },
250 { .name = MT_CLS_PANASONIC,
251 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
252 .maxcontacts = 4 },
253 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
254 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
255 MT_QUIRK_VALID_IS_INRANGE |
256 MT_QUIRK_SLOT_IS_CONTACTID,
257 .maxcontacts = 2
258 },
259 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
260 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
261 MT_QUIRK_SLOT_IS_CONTACTID
262 },
263
264 { .name = MT_CLS_FLATFROG,
265 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
266 MT_QUIRK_NO_AREA,
267 .sn_move = 2048,
268 .maxcontacts = 40,
269 },
270 { .name = MT_CLS_LG,
271 .quirks = MT_QUIRK_ALWAYS_VALID |
272 MT_QUIRK_FIX_CONST_CONTACT_ID |
273 MT_QUIRK_IGNORE_DUPLICATES |
274 MT_QUIRK_HOVERING |
275 MT_QUIRK_CONTACT_CNT_ACCURATE },
276 { .name = MT_CLS_VTL,
277 .quirks = MT_QUIRK_ALWAYS_VALID |
278 MT_QUIRK_CONTACT_CNT_ACCURATE |
279 MT_QUIRK_FORCE_GET_FEATURE,
280 },
281 { }
282 };
283
284 static ssize_t mt_show_quirks(struct device *dev,
285 struct device_attribute *attr,
286 char *buf)
287 {
288 struct hid_device *hdev = to_hid_device(dev);
289 struct mt_device *td = hid_get_drvdata(hdev);
290
291 return sprintf(buf, "%u\n", td->mtclass.quirks);
292 }
293
294 static ssize_t mt_set_quirks(struct device *dev,
295 struct device_attribute *attr,
296 const char *buf, size_t count)
297 {
298 struct hid_device *hdev = to_hid_device(dev);
299 struct mt_device *td = hid_get_drvdata(hdev);
300
301 unsigned long val;
302
303 if (kstrtoul(buf, 0, &val))
304 return -EINVAL;
305
306 td->mtclass.quirks = val;
307
308 if (td->cc_index < 0)
309 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
310
311 return count;
312 }
313
314 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
315
316 static struct attribute *sysfs_attrs[] = {
317 &dev_attr_quirks.attr,
318 NULL
319 };
320
321 static struct attribute_group mt_attribute_group = {
322 .attrs = sysfs_attrs
323 };
324
325 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
326 {
327 struct mt_device *td = hid_get_drvdata(hdev);
328 int ret, size = hid_report_len(report);
329 u8 *buf;
330
331 /*
332 * Do not fetch the feature report if the device has been explicitly
333 * marked as non-capable.
334 */
335 if (td->initial_quirks & HID_QUIRK_NO_INIT_REPORTS)
336 return;
337
338 buf = hid_alloc_report_buf(report, GFP_KERNEL);
339 if (!buf)
340 return;
341
342 ret = hid_hw_raw_request(hdev, report->id, buf, size,
343 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
344 if (ret < 0) {
345 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
346 report->id);
347 } else {
348 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
349 size, 0);
350 if (ret)
351 dev_warn(&hdev->dev, "failed to report feature\n");
352 }
353
354 kfree(buf);
355 }
356
357 static void mt_feature_mapping(struct hid_device *hdev,
358 struct hid_field *field, struct hid_usage *usage)
359 {
360 struct mt_device *td = hid_get_drvdata(hdev);
361
362 switch (usage->hid) {
363 case HID_DG_INPUTMODE:
364 /* Ignore if value index is out of bounds. */
365 if (usage->usage_index >= field->report_count) {
366 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
367 break;
368 }
369
370 if (td->inputmode < 0) {
371 td->inputmode = field->report->id;
372 td->inputmode_index = usage->usage_index;
373 } else {
374 /*
375 * Some elan panels wrongly declare 2 input mode
376 * features, and silently ignore when we set the
377 * value in the second field. Skip the second feature
378 * and hope for the best.
379 */
380 dev_info(&hdev->dev,
381 "Ignoring the extra HID_DG_INPUTMODE\n");
382 }
383
384 break;
385 case HID_DG_CONTACTMAX:
386 mt_get_feature(hdev, field->report);
387
388 td->maxcontact_report_id = field->report->id;
389 td->maxcontacts = field->value[0];
390 if (!td->maxcontacts &&
391 field->logical_maximum <= MT_MAX_MAXCONTACT)
392 td->maxcontacts = field->logical_maximum;
393 if (td->mtclass.maxcontacts)
394 /* check if the maxcontacts is given by the class */
395 td->maxcontacts = td->mtclass.maxcontacts;
396
397 break;
398 case HID_DG_BUTTONTYPE:
399 if (usage->usage_index >= field->report_count) {
400 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
401 break;
402 }
403
404 mt_get_feature(hdev, field->report);
405 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
406 td->is_buttonpad = true;
407
408 break;
409 case 0xff0000c5:
410 /* Retrieve the Win8 blob once to enable some devices */
411 if (usage->usage_index == 0)
412 mt_get_feature(hdev, field->report);
413 break;
414 }
415 }
416
417 static void set_abs(struct input_dev *input, unsigned int code,
418 struct hid_field *field, int snratio)
419 {
420 int fmin = field->logical_minimum;
421 int fmax = field->logical_maximum;
422 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
423 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
424 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
425 }
426
427 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
428 struct hid_input *hi)
429 {
430 struct mt_fields *f = td->fields;
431
432 if (f->length >= HID_MAX_FIELDS)
433 return;
434
435 f->usages[f->length++] = usage->hid;
436 }
437
438 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
439 struct hid_field *field, struct hid_usage *usage,
440 unsigned long **bit, int *max)
441 {
442 struct mt_device *td = hid_get_drvdata(hdev);
443 struct mt_class *cls = &td->mtclass;
444 int code;
445 struct hid_usage *prev_usage = NULL;
446
447 if (field->application == HID_DG_TOUCHSCREEN)
448 td->mt_flags |= INPUT_MT_DIRECT;
449
450 /*
451 * Model touchscreens providing buttons as touchpads.
452 */
453 if (field->application == HID_DG_TOUCHPAD ||
454 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
455 td->mt_flags |= INPUT_MT_POINTER;
456 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
457 }
458
459 /* count the buttons on touchpads */
460 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
461 td->buttons_count++;
462
463 if (usage->usage_index)
464 prev_usage = &field->usage[usage->usage_index - 1];
465
466 switch (usage->hid & HID_USAGE_PAGE) {
467
468 case HID_UP_GENDESK:
469 switch (usage->hid) {
470 case HID_GD_X:
471 if (prev_usage && (prev_usage->hid == usage->hid)) {
472 hid_map_usage(hi, usage, bit, max,
473 EV_ABS, ABS_MT_TOOL_X);
474 set_abs(hi->input, ABS_MT_TOOL_X, field,
475 cls->sn_move);
476 } else {
477 hid_map_usage(hi, usage, bit, max,
478 EV_ABS, ABS_MT_POSITION_X);
479 set_abs(hi->input, ABS_MT_POSITION_X, field,
480 cls->sn_move);
481 }
482
483 mt_store_field(usage, td, hi);
484 return 1;
485 case HID_GD_Y:
486 if (prev_usage && (prev_usage->hid == usage->hid)) {
487 hid_map_usage(hi, usage, bit, max,
488 EV_ABS, ABS_MT_TOOL_Y);
489 set_abs(hi->input, ABS_MT_TOOL_Y, field,
490 cls->sn_move);
491 } else {
492 hid_map_usage(hi, usage, bit, max,
493 EV_ABS, ABS_MT_POSITION_Y);
494 set_abs(hi->input, ABS_MT_POSITION_Y, field,
495 cls->sn_move);
496 }
497
498 mt_store_field(usage, td, hi);
499 return 1;
500 }
501 return 0;
502
503 case HID_UP_DIGITIZER:
504 switch (usage->hid) {
505 case HID_DG_INRANGE:
506 if (cls->quirks & MT_QUIRK_HOVERING) {
507 hid_map_usage(hi, usage, bit, max,
508 EV_ABS, ABS_MT_DISTANCE);
509 input_set_abs_params(hi->input,
510 ABS_MT_DISTANCE, 0, 1, 0, 0);
511 }
512 mt_store_field(usage, td, hi);
513 return 1;
514 case HID_DG_CONFIDENCE:
515 if (cls->name == MT_CLS_WIN_8 &&
516 field->application == HID_DG_TOUCHPAD)
517 cls->quirks |= MT_QUIRK_CONFIDENCE;
518 mt_store_field(usage, td, hi);
519 return 1;
520 case HID_DG_TIPSWITCH:
521 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
522 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
523 mt_store_field(usage, td, hi);
524 return 1;
525 case HID_DG_CONTACTID:
526 mt_store_field(usage, td, hi);
527 td->touches_by_report++;
528 td->mt_report_id = field->report->id;
529 return 1;
530 case HID_DG_WIDTH:
531 hid_map_usage(hi, usage, bit, max,
532 EV_ABS, ABS_MT_TOUCH_MAJOR);
533 if (!(cls->quirks & MT_QUIRK_NO_AREA))
534 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
535 cls->sn_width);
536 mt_store_field(usage, td, hi);
537 return 1;
538 case HID_DG_HEIGHT:
539 hid_map_usage(hi, usage, bit, max,
540 EV_ABS, ABS_MT_TOUCH_MINOR);
541 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
542 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
543 cls->sn_height);
544 input_set_abs_params(hi->input,
545 ABS_MT_ORIENTATION, 0, 1, 0, 0);
546 }
547 mt_store_field(usage, td, hi);
548 return 1;
549 case HID_DG_TIPPRESSURE:
550 hid_map_usage(hi, usage, bit, max,
551 EV_ABS, ABS_MT_PRESSURE);
552 set_abs(hi->input, ABS_MT_PRESSURE, field,
553 cls->sn_pressure);
554 mt_store_field(usage, td, hi);
555 return 1;
556 case HID_DG_CONTACTCOUNT:
557 /* Ignore if indexes are out of bounds. */
558 if (field->index >= field->report->maxfield ||
559 usage->usage_index >= field->report_count)
560 return 1;
561 td->cc_index = field->index;
562 td->cc_value_index = usage->usage_index;
563 return 1;
564 case HID_DG_CONTACTMAX:
565 /* we don't set td->last_slot_field as contactcount and
566 * contact max are global to the report */
567 return -1;
568 case HID_DG_TOUCH:
569 /* Legacy devices use TIPSWITCH and not TOUCH.
570 * Let's just ignore this field. */
571 return -1;
572 }
573 /* let hid-input decide for the others */
574 return 0;
575
576 case HID_UP_BUTTON:
577 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
578 /*
579 * MS PTP spec says that external buttons left and right have
580 * usages 2 and 3.
581 */
582 if (cls->name == MT_CLS_WIN_8 &&
583 field->application == HID_DG_TOUCHPAD &&
584 (usage->hid & HID_USAGE) > 1)
585 code--;
586 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
587 input_set_capability(hi->input, EV_KEY, code);
588 return 1;
589
590 case 0xff000000:
591 /* we do not want to map these: no input-oriented meaning */
592 return -1;
593 }
594
595 return 0;
596 }
597
598 static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi,
599 struct hid_field *field, struct hid_usage *usage,
600 unsigned long **bit, int *max)
601 {
602 if (usage->type == EV_KEY || usage->type == EV_ABS)
603 set_bit(usage->type, hi->input->evbit);
604
605 return -1;
606 }
607
608 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
609 {
610 __s32 quirks = td->mtclass.quirks;
611
612 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
613 return td->curdata.contactid;
614
615 if (quirks & MT_QUIRK_CYPRESS)
616 return cypress_compute_slot(td);
617
618 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
619 return td->num_received;
620
621 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
622 return td->curdata.contactid - 1;
623
624 return input_mt_get_slot_by_key(input, td->curdata.contactid);
625 }
626
627 /*
628 * this function is called when a whole contact has been processed,
629 * so that it can assign it to a slot and store the data there
630 */
631 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
632 {
633 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
634 td->num_received >= td->num_expected)
635 return;
636
637 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
638 int active;
639 int slotnum = mt_compute_slot(td, input);
640 struct mt_slot *s = &td->curdata;
641 struct input_mt *mt = input->mt;
642
643 if (slotnum < 0 || slotnum >= td->maxcontacts)
644 return;
645
646 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
647 struct input_mt_slot *slot = &mt->slots[slotnum];
648 if (input_mt_is_active(slot) &&
649 input_mt_is_used(mt, slot))
650 return;
651 }
652
653 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE))
654 s->confidence_state = 1;
655 active = (s->touch_state || s->inrange_state) &&
656 s->confidence_state;
657
658 input_mt_slot(input, slotnum);
659 input_mt_report_slot_state(input, MT_TOOL_FINGER, active);
660 if (active) {
661 /* this finger is in proximity of the sensor */
662 int wide = (s->w > s->h);
663 int major = max(s->w, s->h);
664 int minor = min(s->w, s->h);
665
666 /*
667 * divided by two to match visual scale of touch
668 * for devices with this quirk
669 */
670 if (td->mtclass.quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
671 major = major >> 1;
672 minor = minor >> 1;
673 }
674
675 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
676 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
677 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
678 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
679 input_event(input, EV_ABS, ABS_MT_DISTANCE,
680 !s->touch_state);
681 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
682 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
683 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
684 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
685 }
686 }
687
688 td->num_received++;
689 }
690
691 /*
692 * this function is called when a whole packet has been received and processed,
693 * so that it can decide what to send to the input layer.
694 */
695 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
696 {
697 input_mt_sync_frame(input);
698 input_sync(input);
699 td->num_received = 0;
700 }
701
702 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
703 struct hid_usage *usage, __s32 value)
704 {
705 /* we will handle the hidinput part later, now remains hiddev */
706 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
707 hid->hiddev_hid_event(hid, field, usage, value);
708
709 return 1;
710 }
711
712 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
713 struct hid_usage *usage, __s32 value)
714 {
715 struct mt_device *td = hid_get_drvdata(hid);
716 __s32 quirks = td->mtclass.quirks;
717 struct input_dev *input = field->hidinput->input;
718
719 if (hid->claimed & HID_CLAIMED_INPUT) {
720 switch (usage->hid) {
721 case HID_DG_INRANGE:
722 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
723 td->curvalid = value;
724 if (quirks & MT_QUIRK_HOVERING)
725 td->curdata.inrange_state = value;
726 break;
727 case HID_DG_TIPSWITCH:
728 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
729 td->curvalid = value;
730 td->curdata.touch_state = value;
731 break;
732 case HID_DG_CONFIDENCE:
733 if (quirks & MT_QUIRK_CONFIDENCE)
734 td->curdata.confidence_state = value;
735 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
736 td->curvalid = value;
737 break;
738 case HID_DG_CONTACTID:
739 td->curdata.contactid = value;
740 break;
741 case HID_DG_TIPPRESSURE:
742 td->curdata.p = value;
743 break;
744 case HID_GD_X:
745 if (usage->code == ABS_MT_TOOL_X)
746 td->curdata.cx = value;
747 else
748 td->curdata.x = value;
749 break;
750 case HID_GD_Y:
751 if (usage->code == ABS_MT_TOOL_Y)
752 td->curdata.cy = value;
753 else
754 td->curdata.y = value;
755 break;
756 case HID_DG_WIDTH:
757 td->curdata.w = value;
758 break;
759 case HID_DG_HEIGHT:
760 td->curdata.h = value;
761 break;
762 case HID_DG_CONTACTCOUNT:
763 break;
764 case HID_DG_TOUCH:
765 /* do nothing */
766 break;
767
768 default:
769 if (usage->type)
770 input_event(input, usage->type, usage->code,
771 value);
772 return;
773 }
774
775 if (usage->usage_index + 1 == field->report_count) {
776 /* we only take into account the last report. */
777 if (usage->hid == td->last_slot_field)
778 mt_complete_slot(td, field->hidinput->input);
779 }
780
781 }
782 }
783
784 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
785 {
786 struct mt_device *td = hid_get_drvdata(hid);
787 struct hid_field *field;
788 unsigned count;
789 int r, n;
790
791 /*
792 * Includes multi-packet support where subsequent
793 * packets are sent with zero contactcount.
794 */
795 if (td->cc_index >= 0) {
796 struct hid_field *field = report->field[td->cc_index];
797 int value = field->value[td->cc_value_index];
798 if (value)
799 td->num_expected = value;
800 }
801
802 for (r = 0; r < report->maxfield; r++) {
803 field = report->field[r];
804 count = field->report_count;
805
806 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
807 continue;
808
809 for (n = 0; n < count; n++)
810 mt_process_mt_event(hid, field, &field->usage[n],
811 field->value[n]);
812 }
813
814 if (td->num_received >= td->num_expected)
815 mt_sync_frame(td, report->field[0]->hidinput->input);
816 }
817
818 static int mt_touch_input_configured(struct hid_device *hdev,
819 struct hid_input *hi)
820 {
821 struct mt_device *td = hid_get_drvdata(hdev);
822 struct mt_class *cls = &td->mtclass;
823 struct input_dev *input = hi->input;
824 int ret;
825
826 if (!td->maxcontacts)
827 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
828
829 mt_post_parse(td);
830 if (td->serial_maybe)
831 mt_post_parse_default_settings(td);
832
833 if (cls->is_indirect)
834 td->mt_flags |= INPUT_MT_POINTER;
835
836 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
837 td->mt_flags |= INPUT_MT_DROP_UNUSED;
838
839 /* check for clickpads */
840 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
841 td->is_buttonpad = true;
842
843 if (td->is_buttonpad)
844 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
845
846 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
847 if (ret)
848 return ret;
849
850 td->mt_flags = 0;
851 return 0;
852 }
853
854 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
855 struct hid_field *field, struct hid_usage *usage,
856 unsigned long **bit, int *max)
857 {
858 struct mt_device *td = hid_get_drvdata(hdev);
859
860 /*
861 * If mtclass.export_all_inputs is not set, only map fields from
862 * TouchScreen or TouchPad collections. We need to ignore fields
863 * that belong to other collections such as Mouse that might have
864 * the same GenericDesktop usages.
865 */
866 if (!td->mtclass.export_all_inputs &&
867 field->application != HID_DG_TOUCHSCREEN &&
868 field->application != HID_DG_PEN &&
869 field->application != HID_DG_TOUCHPAD &&
870 field->application != HID_GD_KEYBOARD &&
871 field->application != HID_CP_CONSUMER_CONTROL)
872 return -1;
873
874 /*
875 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
876 * for the stylus.
877 * The check for mt_report_id ensures we don't process
878 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
879 * collection, but within the report ID.
880 */
881 if (field->physical == HID_DG_STYLUS)
882 return 0;
883 else if ((field->physical == 0) &&
884 (field->report->id != td->mt_report_id) &&
885 (td->mt_report_id != -1))
886 return 0;
887
888 if (field->application == HID_DG_TOUCHSCREEN ||
889 field->application == HID_DG_TOUCHPAD)
890 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
891
892 /* let hid-core decide for the others */
893 return 0;
894 }
895
896 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
897 struct hid_field *field, struct hid_usage *usage,
898 unsigned long **bit, int *max)
899 {
900 /*
901 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
902 * for the stylus.
903 */
904 if (field->physical == HID_DG_STYLUS)
905 return 0;
906
907 if (field->application == HID_DG_TOUCHSCREEN ||
908 field->application == HID_DG_TOUCHPAD)
909 return mt_touch_input_mapped(hdev, hi, field, usage, bit, max);
910
911 /* let hid-core decide for the others */
912 return 0;
913 }
914
915 static int mt_event(struct hid_device *hid, struct hid_field *field,
916 struct hid_usage *usage, __s32 value)
917 {
918 struct mt_device *td = hid_get_drvdata(hid);
919
920 if (field->report->id == td->mt_report_id)
921 return mt_touch_event(hid, field, usage, value);
922
923 return 0;
924 }
925
926 static void mt_report(struct hid_device *hid, struct hid_report *report)
927 {
928 struct mt_device *td = hid_get_drvdata(hid);
929 struct hid_field *field = report->field[0];
930
931 if (!(hid->claimed & HID_CLAIMED_INPUT))
932 return;
933
934 if (report->id == td->mt_report_id)
935 return mt_touch_report(hid, report);
936
937 if (field && field->hidinput && field->hidinput->input)
938 input_sync(field->hidinput->input);
939 }
940
941 static void mt_set_input_mode(struct hid_device *hdev)
942 {
943 struct mt_device *td = hid_get_drvdata(hdev);
944 struct hid_report *r;
945 struct hid_report_enum *re;
946 struct mt_class *cls = &td->mtclass;
947 char *buf;
948 int report_len;
949
950 if (td->inputmode < 0)
951 return;
952
953 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
954 r = re->report_id_hash[td->inputmode];
955 if (r) {
956 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
957 report_len = hid_report_len(r);
958 buf = hid_alloc_report_buf(r, GFP_KERNEL);
959 if (!buf) {
960 hid_err(hdev, "failed to allocate buffer for report\n");
961 return;
962 }
963 hid_hw_raw_request(hdev, r->id, buf, report_len,
964 HID_FEATURE_REPORT,
965 HID_REQ_GET_REPORT);
966 kfree(buf);
967 }
968 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
969 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
970 }
971 }
972
973 static void mt_set_maxcontacts(struct hid_device *hdev)
974 {
975 struct mt_device *td = hid_get_drvdata(hdev);
976 struct hid_report *r;
977 struct hid_report_enum *re;
978 int fieldmax, max;
979
980 if (td->maxcontact_report_id < 0)
981 return;
982
983 if (!td->mtclass.maxcontacts)
984 return;
985
986 re = &hdev->report_enum[HID_FEATURE_REPORT];
987 r = re->report_id_hash[td->maxcontact_report_id];
988 if (r) {
989 max = td->mtclass.maxcontacts;
990 fieldmax = r->field[0]->logical_maximum;
991 max = min(fieldmax, max);
992 if (r->field[0]->value[0] != max) {
993 r->field[0]->value[0] = max;
994 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
995 }
996 }
997 }
998
999 static void mt_post_parse_default_settings(struct mt_device *td)
1000 {
1001 __s32 quirks = td->mtclass.quirks;
1002
1003 /* unknown serial device needs special quirks */
1004 if (td->touches_by_report == 1) {
1005 quirks |= MT_QUIRK_ALWAYS_VALID;
1006 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1007 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1008 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1009 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1010 }
1011
1012 td->mtclass.quirks = quirks;
1013 }
1014
1015 static void mt_post_parse(struct mt_device *td)
1016 {
1017 struct mt_fields *f = td->fields;
1018 struct mt_class *cls = &td->mtclass;
1019
1020 if (td->touches_by_report > 0) {
1021 int field_count_per_touch = f->length / td->touches_by_report;
1022 td->last_slot_field = f->usages[field_count_per_touch - 1];
1023 }
1024
1025 if (td->cc_index < 0)
1026 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1027 }
1028
1029 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1030 {
1031 struct mt_device *td = hid_get_drvdata(hdev);
1032 char *name;
1033 const char *suffix = NULL;
1034 struct hid_field *field = hi->report->field[0];
1035 int ret;
1036
1037 if (hi->report->id == td->mt_report_id) {
1038 ret = mt_touch_input_configured(hdev, hi);
1039 if (ret)
1040 return ret;
1041 }
1042
1043 /*
1044 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1045 * for the stylus. Check this first, and then rely on the application
1046 * field.
1047 */
1048 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
1049 suffix = "Pen";
1050 /* force BTN_STYLUS to allow tablet matching in udev */
1051 __set_bit(BTN_STYLUS, hi->input->keybit);
1052 } else {
1053 switch (field->application) {
1054 case HID_GD_KEYBOARD:
1055 suffix = "Keyboard";
1056 break;
1057 case HID_GD_KEYPAD:
1058 suffix = "Keypad";
1059 break;
1060 case HID_GD_MOUSE:
1061 suffix = "Mouse";
1062 break;
1063 case HID_DG_STYLUS:
1064 suffix = "Pen";
1065 /* force BTN_STYLUS to allow tablet matching in udev */
1066 __set_bit(BTN_STYLUS, hi->input->keybit);
1067 break;
1068 case HID_DG_TOUCHSCREEN:
1069 /* we do not set suffix = "Touchscreen" */
1070 break;
1071 case HID_DG_TOUCHPAD:
1072 suffix = "Touchpad";
1073 break;
1074 case HID_GD_SYSTEM_CONTROL:
1075 suffix = "System Control";
1076 break;
1077 case HID_CP_CONSUMER_CONTROL:
1078 suffix = "Consumer Control";
1079 break;
1080 default:
1081 suffix = "UNKNOWN";
1082 break;
1083 }
1084 }
1085
1086 if (suffix) {
1087 name = devm_kzalloc(&hi->input->dev,
1088 strlen(hdev->name) + strlen(suffix) + 2,
1089 GFP_KERNEL);
1090 if (name) {
1091 sprintf(name, "%s %s", hdev->name, suffix);
1092 hi->input->name = name;
1093 }
1094 }
1095
1096 return 0;
1097 }
1098
1099 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1100 {
1101 if (field->usage[0].hid != usage ||
1102 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1103 return;
1104
1105 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1106 field->flags |= HID_MAIN_ITEM_VARIABLE;
1107 }
1108
1109 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1110 {
1111 struct hid_report *report;
1112 int i;
1113
1114 list_for_each_entry(report,
1115 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1116 list) {
1117
1118 if (!report->maxfield)
1119 continue;
1120
1121 for (i = 0; i < report->maxfield; i++)
1122 if (report->field[i]->maxusage >= 1)
1123 mt_fix_const_field(report->field[i], usage);
1124 }
1125 }
1126
1127 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1128 {
1129 int ret, i;
1130 struct mt_device *td;
1131 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1132
1133 for (i = 0; mt_classes[i].name ; i++) {
1134 if (id->driver_data == mt_classes[i].name) {
1135 mtclass = &(mt_classes[i]);
1136 break;
1137 }
1138 }
1139
1140 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1141 if (!td) {
1142 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1143 return -ENOMEM;
1144 }
1145 td->mtclass = *mtclass;
1146 td->inputmode = -1;
1147 td->maxcontact_report_id = -1;
1148 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1149 td->cc_index = -1;
1150 td->mt_report_id = -1;
1151 hid_set_drvdata(hdev, td);
1152
1153 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1154 GFP_KERNEL);
1155 if (!td->fields) {
1156 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
1157 return -ENOMEM;
1158 }
1159
1160 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1161 td->serial_maybe = true;
1162
1163 /*
1164 * Store the initial quirk state
1165 */
1166 td->initial_quirks = hdev->quirks;
1167
1168 /* This allows the driver to correctly support devices
1169 * that emit events over several HID messages.
1170 */
1171 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1172
1173 /*
1174 * This allows the driver to handle different input sensors
1175 * that emits events through different reports on the same HID
1176 * device.
1177 */
1178 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1179 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1180
1181 /*
1182 * Some multitouch screens do not like to be polled for input
1183 * reports. Fortunately, the Win8 spec says that all touches
1184 * should be sent during each report, making the initialization
1185 * of input reports unnecessary. For Win7 devices, well, let's hope
1186 * they will still be happy (this is only be a problem if a touch
1187 * was already there while probing the device).
1188 *
1189 * In addition some touchpads do not behave well if we read
1190 * all feature reports from them. Instead we prevent
1191 * initial report fetching and then selectively fetch each
1192 * report we are interested in.
1193 */
1194 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1195
1196 ret = hid_parse(hdev);
1197 if (ret != 0)
1198 return ret;
1199
1200 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1201 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1202
1203 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1204 if (ret)
1205 return ret;
1206
1207 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1208 if (ret)
1209 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1210 hdev->name);
1211
1212 mt_set_maxcontacts(hdev);
1213 mt_set_input_mode(hdev);
1214
1215 /* release .fields memory as it is not used anymore */
1216 devm_kfree(&hdev->dev, td->fields);
1217 td->fields = NULL;
1218
1219 return 0;
1220 }
1221
1222 #ifdef CONFIG_PM
1223 static void mt_release_contacts(struct hid_device *hid)
1224 {
1225 struct hid_input *hidinput;
1226
1227 list_for_each_entry(hidinput, &hid->inputs, list) {
1228 struct input_dev *input_dev = hidinput->input;
1229 struct input_mt *mt = input_dev->mt;
1230 int i;
1231
1232 if (mt) {
1233 for (i = 0; i < mt->num_slots; i++) {
1234 input_mt_slot(input_dev, i);
1235 input_mt_report_slot_state(input_dev,
1236 MT_TOOL_FINGER,
1237 false);
1238 }
1239 input_mt_sync_frame(input_dev);
1240 input_sync(input_dev);
1241 }
1242 }
1243 }
1244
1245 static int mt_reset_resume(struct hid_device *hdev)
1246 {
1247 mt_release_contacts(hdev);
1248 mt_set_maxcontacts(hdev);
1249 mt_set_input_mode(hdev);
1250 return 0;
1251 }
1252
1253 static int mt_resume(struct hid_device *hdev)
1254 {
1255 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1256 * It should be safe to send it to other devices too.
1257 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1258
1259 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1260
1261 return 0;
1262 }
1263 #endif
1264
1265 static void mt_remove(struct hid_device *hdev)
1266 {
1267 struct mt_device *td = hid_get_drvdata(hdev);
1268
1269 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1270 hid_hw_stop(hdev);
1271 hdev->quirks = td->initial_quirks;
1272 }
1273
1274 /*
1275 * This list contains only:
1276 * - VID/PID of products not working with the default multitouch handling
1277 * - 2 generic rules.
1278 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1279 */
1280 static const struct hid_device_id mt_devices[] = {
1281
1282 /* 3M panels */
1283 { .driver_data = MT_CLS_3M,
1284 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1285 USB_DEVICE_ID_3M1968) },
1286 { .driver_data = MT_CLS_3M,
1287 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1288 USB_DEVICE_ID_3M2256) },
1289 { .driver_data = MT_CLS_3M,
1290 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1291 USB_DEVICE_ID_3M3266) },
1292
1293 /* Anton devices */
1294 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1295 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1296 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1297
1298 /* Atmel panels */
1299 { .driver_data = MT_CLS_SERIAL,
1300 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1301 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1302
1303 /* Baanto multitouch devices */
1304 { .driver_data = MT_CLS_NSMU,
1305 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1306 USB_DEVICE_ID_BAANTO_MT_190W2) },
1307
1308 /* Cando panels */
1309 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1310 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1311 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1312 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1313 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1314 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1315
1316 /* Chunghwa Telecom touch panels */
1317 { .driver_data = MT_CLS_NSMU,
1318 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1319 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1320
1321 /* CJTouch panels */
1322 { .driver_data = MT_CLS_NSMU,
1323 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1324 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1325 { .driver_data = MT_CLS_NSMU,
1326 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1327 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1328
1329 /* CVTouch panels */
1330 { .driver_data = MT_CLS_NSMU,
1331 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1332 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1333
1334 /* eGalax devices (resistive) */
1335 { .driver_data = MT_CLS_EGALAX,
1336 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1337 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1338 { .driver_data = MT_CLS_EGALAX,
1339 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1340 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1341
1342 /* eGalax devices (capacitive) */
1343 { .driver_data = MT_CLS_EGALAX_SERIAL,
1344 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1345 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1346 { .driver_data = MT_CLS_EGALAX,
1347 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1348 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1349 { .driver_data = MT_CLS_EGALAX_SERIAL,
1350 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1351 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1352 { .driver_data = MT_CLS_EGALAX_SERIAL,
1353 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1354 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1355 { .driver_data = MT_CLS_EGALAX_SERIAL,
1356 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1357 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1358 { .driver_data = MT_CLS_EGALAX_SERIAL,
1359 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1360 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1361 { .driver_data = MT_CLS_EGALAX,
1362 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1363 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1364 { .driver_data = MT_CLS_EGALAX,
1365 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1366 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1367 { .driver_data = MT_CLS_EGALAX_SERIAL,
1368 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1369 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1370 { .driver_data = MT_CLS_EGALAX,
1371 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1372 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1373 { .driver_data = MT_CLS_EGALAX,
1374 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1375 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1376 { .driver_data = MT_CLS_EGALAX,
1377 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1378 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1379 { .driver_data = MT_CLS_EGALAX,
1380 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1381 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1382 { .driver_data = MT_CLS_EGALAX_SERIAL,
1383 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1384 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1385 { .driver_data = MT_CLS_EGALAX_SERIAL,
1386 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1387 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1388 { .driver_data = MT_CLS_EGALAX_SERIAL,
1389 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1390 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1391
1392 /* Elitegroup panel */
1393 { .driver_data = MT_CLS_SERIAL,
1394 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1395 USB_DEVICE_ID_ELITEGROUP_05D8) },
1396
1397 /* Flatfrog Panels */
1398 { .driver_data = MT_CLS_FLATFROG,
1399 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1400 USB_DEVICE_ID_MULTITOUCH_3200) },
1401
1402 /* FocalTech Panels */
1403 { .driver_data = MT_CLS_SERIAL,
1404 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1405 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1406
1407 /* GeneralTouch panel */
1408 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1409 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1410 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1411 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1412 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1413 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1414 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1415 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1416 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1417 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1418 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1419 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1420 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1421 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1422 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1423 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1424 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1425 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1426 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1427 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1428 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1429
1430 /* Gametel game controller */
1431 { .driver_data = MT_CLS_NSMU,
1432 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1433 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1434
1435 /* GoodTouch panels */
1436 { .driver_data = MT_CLS_NSMU,
1437 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1438 USB_DEVICE_ID_GOODTOUCH_000f) },
1439
1440 /* Hanvon panels */
1441 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1442 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1443 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1444
1445 /* Ilitek dual touch panel */
1446 { .driver_data = MT_CLS_NSMU,
1447 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1448 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1449
1450 /* LG Melfas panel */
1451 { .driver_data = MT_CLS_LG,
1452 HID_USB_DEVICE(USB_VENDOR_ID_LG,
1453 USB_DEVICE_ID_LG_MELFAS_MT) },
1454
1455 /* MosArt panels */
1456 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1457 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1458 USB_DEVICE_ID_ASUS_T91MT)},
1459 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1460 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1461 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1462 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1463 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1464 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1465
1466 /* Panasonic panels */
1467 { .driver_data = MT_CLS_PANASONIC,
1468 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1469 USB_DEVICE_ID_PANABOARD_UBT780) },
1470 { .driver_data = MT_CLS_PANASONIC,
1471 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1472 USB_DEVICE_ID_PANABOARD_UBT880) },
1473
1474 /* Novatek Panel */
1475 { .driver_data = MT_CLS_NSMU,
1476 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1477 USB_DEVICE_ID_NOVATEK_PCT) },
1478
1479 /* Ntrig Panel */
1480 { .driver_data = MT_CLS_NSMU,
1481 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1482 USB_VENDOR_ID_NTRIG, 0x1b05) },
1483
1484 /* PixArt optical touch screen */
1485 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1486 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1487 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1488 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1489 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1490 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1491 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1492 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1493 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1494
1495 /* PixCir-based panels */
1496 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1497 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1498 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1499
1500 /* Quanta-based panels */
1501 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1502 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1503 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1504
1505 /* Stantum panels */
1506 { .driver_data = MT_CLS_CONFIDENCE,
1507 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1508 USB_DEVICE_ID_MTP_STM)},
1509
1510 /* TopSeed panels */
1511 { .driver_data = MT_CLS_TOPSEED,
1512 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1513 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1514
1515 /* Touch International panels */
1516 { .driver_data = MT_CLS_NSMU,
1517 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1518 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1519
1520 /* Unitec panels */
1521 { .driver_data = MT_CLS_NSMU,
1522 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1523 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1524 { .driver_data = MT_CLS_NSMU,
1525 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1526 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1527
1528 /* VTL panels */
1529 { .driver_data = MT_CLS_VTL,
1530 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1531 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1532
1533 /* Wistron panels */
1534 { .driver_data = MT_CLS_NSMU,
1535 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1536 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1537
1538 /* XAT */
1539 { .driver_data = MT_CLS_NSMU,
1540 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1541 USB_DEVICE_ID_XAT_CSR) },
1542
1543 /* Xiroku */
1544 { .driver_data = MT_CLS_NSMU,
1545 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1546 USB_DEVICE_ID_XIROKU_SPX) },
1547 { .driver_data = MT_CLS_NSMU,
1548 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1549 USB_DEVICE_ID_XIROKU_MPX) },
1550 { .driver_data = MT_CLS_NSMU,
1551 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1552 USB_DEVICE_ID_XIROKU_CSR) },
1553 { .driver_data = MT_CLS_NSMU,
1554 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1555 USB_DEVICE_ID_XIROKU_SPX1) },
1556 { .driver_data = MT_CLS_NSMU,
1557 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1558 USB_DEVICE_ID_XIROKU_MPX1) },
1559 { .driver_data = MT_CLS_NSMU,
1560 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1561 USB_DEVICE_ID_XIROKU_CSR1) },
1562 { .driver_data = MT_CLS_NSMU,
1563 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1564 USB_DEVICE_ID_XIROKU_SPX2) },
1565 { .driver_data = MT_CLS_NSMU,
1566 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1567 USB_DEVICE_ID_XIROKU_MPX2) },
1568 { .driver_data = MT_CLS_NSMU,
1569 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1570 USB_DEVICE_ID_XIROKU_CSR2) },
1571
1572 /* Generic MT device */
1573 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1574
1575 /* Generic Win 8 certified MT device */
1576 { .driver_data = MT_CLS_WIN_8,
1577 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1578 HID_ANY_ID, HID_ANY_ID) },
1579 { }
1580 };
1581 MODULE_DEVICE_TABLE(hid, mt_devices);
1582
1583 static const struct hid_usage_id mt_grabbed_usages[] = {
1584 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1585 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1586 };
1587
1588 static struct hid_driver mt_driver = {
1589 .name = "hid-multitouch",
1590 .id_table = mt_devices,
1591 .probe = mt_probe,
1592 .remove = mt_remove,
1593 .input_mapping = mt_input_mapping,
1594 .input_mapped = mt_input_mapped,
1595 .input_configured = mt_input_configured,
1596 .feature_mapping = mt_feature_mapping,
1597 .usage_table = mt_grabbed_usages,
1598 .event = mt_event,
1599 .report = mt_report,
1600 #ifdef CONFIG_PM
1601 .reset_resume = mt_reset_resume,
1602 .resume = mt_resume,
1603 #endif
1604 };
1605 module_hid_driver(mt_driver);
Ubuntu Artful kernel mirror