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