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Linux 4.16.11
[linux/fpc-iii.git] / drivers / hid / hid-multitouch.c
blob2e1736ba2444d8b02cc9526606ce814af03c9735
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/jiffies.h>
47 #include <linux/string.h>
48 #include <linux/timer.h>
49
50
51 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
52 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
53 MODULE_DESCRIPTION("HID multitouch panels");
54 MODULE_LICENSE("GPL");
55
56 #include "hid-ids.h"
57
58 /* quirks to control the device */
59 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0)
60 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1)
61 #define MT_QUIRK_CYPRESS BIT(2)
62 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3)
63 #define MT_QUIRK_ALWAYS_VALID BIT(4)
64 #define MT_QUIRK_VALID_IS_INRANGE BIT(5)
65 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6)
66 #define MT_QUIRK_CONFIDENCE BIT(7)
67 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8)
68 #define MT_QUIRK_NO_AREA BIT(9)
69 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10)
70 #define MT_QUIRK_HOVERING BIT(11)
71 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12)
72 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13)
73 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14)
74 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15)
75 #define MT_QUIRK_STICKY_FINGERS BIT(16)
76 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17)
77
78 #define MT_INPUTMODE_TOUCHSCREEN 0x02
79 #define MT_INPUTMODE_TOUCHPAD 0x03
80
81 #define MT_BUTTONTYPE_CLICKPAD 0
82
83 #define MT_IO_FLAGS_RUNNING 0
84 #define MT_IO_FLAGS_ACTIVE_SLOTS 1
85 #define MT_IO_FLAGS_PENDING_SLOTS 2
86
87 struct mt_slot {
88 __s32 x, y, cx, cy, p, w, h, a;
89 __s32 contactid; /* the device ContactID assigned to this slot */
90 bool touch_state; /* is the touch valid? */
91 bool inrange_state; /* is the finger in proximity of the sensor? */
92 bool confidence_state; /* is the touch made by a finger? */
93 bool has_azimuth; /* the contact reports azimuth */
94 };
95
96 struct mt_class {
97 __s32 name; /* MT_CLS */
98 __s32 quirks;
99 __s32 sn_move; /* Signal/noise ratio for move events */
100 __s32 sn_width; /* Signal/noise ratio for width events */
101 __s32 sn_height; /* Signal/noise ratio for height events */
102 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
103 __u8 maxcontacts;
104 bool is_indirect; /* true for touchpads */
105 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
106 };
107
108 struct mt_fields {
109 unsigned usages[HID_MAX_FIELDS];
110 unsigned int length;
111 };
112
113 struct mt_device {
114 struct mt_slot curdata; /* placeholder of incoming data */
115 struct mt_class mtclass; /* our mt device class */
116 struct timer_list release_timer; /* to release sticky fingers */
117 struct hid_device *hdev; /* hid_device we're attached to */
118 struct mt_fields *fields; /* temporary placeholder for storing the
119 multitouch fields */
120 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */
121 int cc_index; /* contact count field index in the report */
122 int cc_value_index; /* contact count value index in the field */
123 int scantime_index; /* scantime field index in the report */
124 int scantime_val_index; /* scantime value index in the field */
125 int prev_scantime; /* scantime reported in the previous packet */
126 int left_button_state; /* left button state */
127 unsigned last_slot_field; /* the last field of a slot */
128 unsigned mt_report_id; /* the report ID of the multitouch device */
129 unsigned long initial_quirks; /* initial quirks state */
130 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */
131 __s16 inputmode_index; /* InputMode HID feature index in the report */
132 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature,
133 -1 if non-existent */
134 __u8 inputmode_value; /* InputMode HID feature value */
135 __u8 num_received; /* how many contacts we received */
136 __u8 num_expected; /* expected last contact index */
137 __u8 maxcontacts;
138 __u8 touches_by_report; /* how many touches are present in one report:
139 * 1 means we should use a serial protocol
140 * > 1 means hybrid (multitouch) protocol */
141 __u8 buttons_count; /* number of physical buttons per touchpad */
142 bool is_buttonpad; /* is this device a button pad? */
143 bool serial_maybe; /* need to check for serial protocol */
144 bool curvalid; /* is the current contact valid? */
145 unsigned mt_flags; /* flags to pass to input-mt */
146 __s32 dev_time; /* the scan time provided by the device */
147 unsigned long jiffies; /* the frame's jiffies */
148 int timestamp; /* the timestamp to be sent */
149 };
150
151 static void mt_post_parse_default_settings(struct mt_device *td);
152 static void mt_post_parse(struct mt_device *td);
153
154 /* classes of device behavior */
155 #define MT_CLS_DEFAULT 0x0001
156
157 #define MT_CLS_SERIAL 0x0002
158 #define MT_CLS_CONFIDENCE 0x0003
159 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
160 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
161 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
162 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
163 /* reserved 0x0008 */
164 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
165 #define MT_CLS_NSMU 0x000a
166 /* reserved 0x0010 */
167 /* reserved 0x0011 */
168 #define MT_CLS_WIN_8 0x0012
169 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
170 #define MT_CLS_WIN_8_DUAL 0x0014
171
172 /* vendor specific classes */
173 #define MT_CLS_3M 0x0101
174 /* reserved 0x0102 */
175 #define MT_CLS_EGALAX 0x0103
176 #define MT_CLS_EGALAX_SERIAL 0x0104
177 #define MT_CLS_TOPSEED 0x0105
178 #define MT_CLS_PANASONIC 0x0106
179 #define MT_CLS_FLATFROG 0x0107
180 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
181 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
182 #define MT_CLS_LG 0x010a
183 #define MT_CLS_ASUS 0x010b
184 #define MT_CLS_VTL 0x0110
185 #define MT_CLS_GOOGLE 0x0111
186
187 #define MT_DEFAULT_MAXCONTACT 10
188 #define MT_MAX_MAXCONTACT 250
189
190 /*
191 * Resync device and local timestamps after that many microseconds without
192 * receiving data.
193 */
194 #define MAX_TIMESTAMP_INTERVAL 1000000
195
196 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
197 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
198
199 /*
200 * these device-dependent functions determine what slot corresponds
201 * to a valid contact that was just read.
202 */
203
204 static int cypress_compute_slot(struct mt_device *td)
205 {
206 if (td->curdata.contactid != 0 || td->num_received == 0)
207 return td->curdata.contactid;
208 else
209 return -1;
210 }
211
212 static struct mt_class mt_classes[] = {
213 { .name = MT_CLS_DEFAULT,
214 .quirks = MT_QUIRK_ALWAYS_VALID |
215 MT_QUIRK_CONTACT_CNT_ACCURATE },
216 { .name = MT_CLS_NSMU,
217 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
218 { .name = MT_CLS_SERIAL,
219 .quirks = MT_QUIRK_ALWAYS_VALID},
220 { .name = MT_CLS_CONFIDENCE,
221 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
222 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
223 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
224 MT_QUIRK_SLOT_IS_CONTACTID },
225 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
226 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
227 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
228 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
229 .quirks = MT_QUIRK_VALID_IS_INRANGE |
230 MT_QUIRK_SLOT_IS_CONTACTID,
231 .maxcontacts = 2 },
232 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
233 .quirks = MT_QUIRK_VALID_IS_INRANGE |
234 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
235 .maxcontacts = 2 },
236 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
237 .quirks = MT_QUIRK_VALID_IS_INRANGE |
238 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
239 { .name = MT_CLS_WIN_8,
240 .quirks = MT_QUIRK_ALWAYS_VALID |
241 MT_QUIRK_IGNORE_DUPLICATES |
242 MT_QUIRK_HOVERING |
243 MT_QUIRK_CONTACT_CNT_ACCURATE |
244 MT_QUIRK_STICKY_FINGERS },
245 { .name = MT_CLS_EXPORT_ALL_INPUTS,
246 .quirks = MT_QUIRK_ALWAYS_VALID |
247 MT_QUIRK_CONTACT_CNT_ACCURATE,
248 .export_all_inputs = true },
249 { .name = MT_CLS_WIN_8_DUAL,
250 .quirks = MT_QUIRK_ALWAYS_VALID |
251 MT_QUIRK_IGNORE_DUPLICATES |
252 MT_QUIRK_HOVERING |
253 MT_QUIRK_CONTACT_CNT_ACCURATE,
254 .export_all_inputs = true },
255
256 /*
257 * vendor specific classes
258 */
259 { .name = MT_CLS_3M,
260 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
261 MT_QUIRK_SLOT_IS_CONTACTID |
262 MT_QUIRK_TOUCH_SIZE_SCALING,
263 .sn_move = 2048,
264 .sn_width = 128,
265 .sn_height = 128,
266 .maxcontacts = 60,
267 },
268 { .name = MT_CLS_EGALAX,
269 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
270 MT_QUIRK_VALID_IS_INRANGE,
271 .sn_move = 4096,
272 .sn_pressure = 32,
273 },
274 { .name = MT_CLS_EGALAX_SERIAL,
275 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
276 MT_QUIRK_ALWAYS_VALID,
277 .sn_move = 4096,
278 .sn_pressure = 32,
279 },
280 { .name = MT_CLS_TOPSEED,
281 .quirks = MT_QUIRK_ALWAYS_VALID,
282 .is_indirect = true,
283 .maxcontacts = 2,
284 },
285 { .name = MT_CLS_PANASONIC,
286 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
287 .maxcontacts = 4 },
288 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
289 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
290 MT_QUIRK_VALID_IS_INRANGE |
291 MT_QUIRK_SLOT_IS_CONTACTID,
292 .maxcontacts = 2
293 },
294 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
295 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
296 MT_QUIRK_SLOT_IS_CONTACTID
297 },
298
299 { .name = MT_CLS_FLATFROG,
300 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
301 MT_QUIRK_NO_AREA,
302 .sn_move = 2048,
303 .maxcontacts = 40,
304 },
305 { .name = MT_CLS_LG,
306 .quirks = MT_QUIRK_ALWAYS_VALID |
307 MT_QUIRK_FIX_CONST_CONTACT_ID |
308 MT_QUIRK_IGNORE_DUPLICATES |
309 MT_QUIRK_HOVERING |
310 MT_QUIRK_CONTACT_CNT_ACCURATE },
311 { .name = MT_CLS_ASUS,
312 .quirks = MT_QUIRK_ALWAYS_VALID |
313 MT_QUIRK_CONTACT_CNT_ACCURATE |
314 MT_QUIRK_ASUS_CUSTOM_UP },
315 { .name = MT_CLS_VTL,
316 .quirks = MT_QUIRK_ALWAYS_VALID |
317 MT_QUIRK_CONTACT_CNT_ACCURATE |
318 MT_QUIRK_FORCE_GET_FEATURE,
319 },
320 { .name = MT_CLS_GOOGLE,
321 .quirks = MT_QUIRK_ALWAYS_VALID |
322 MT_QUIRK_CONTACT_CNT_ACCURATE |
323 MT_QUIRK_SLOT_IS_CONTACTID |
324 MT_QUIRK_HOVERING
325 },
326 { }
327 };
328
329 static ssize_t mt_show_quirks(struct device *dev,
330 struct device_attribute *attr,
331 char *buf)
332 {
333 struct hid_device *hdev = to_hid_device(dev);
334 struct mt_device *td = hid_get_drvdata(hdev);
335
336 return sprintf(buf, "%u\n", td->mtclass.quirks);
337 }
338
339 static ssize_t mt_set_quirks(struct device *dev,
340 struct device_attribute *attr,
341 const char *buf, size_t count)
342 {
343 struct hid_device *hdev = to_hid_device(dev);
344 struct mt_device *td = hid_get_drvdata(hdev);
345
346 unsigned long val;
347
348 if (kstrtoul(buf, 0, &val))
349 return -EINVAL;
350
351 td->mtclass.quirks = val;
352
353 if (td->cc_index < 0)
354 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
355
356 return count;
357 }
358
359 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
360
361 static struct attribute *sysfs_attrs[] = {
362 &dev_attr_quirks.attr,
363 NULL
364 };
365
366 static const struct attribute_group mt_attribute_group = {
367 .attrs = sysfs_attrs
368 };
369
370 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
371 {
372 struct mt_device *td = hid_get_drvdata(hdev);
373 int ret;
374 u32 size = hid_report_len(report);
375 u8 *buf;
376
377 /*
378 * Do not fetch the feature report if the device has been explicitly
379 * marked as non-capable.
380 */
381 if (td->initial_quirks & HID_QUIRK_NO_INIT_REPORTS)
382 return;
383
384 buf = hid_alloc_report_buf(report, GFP_KERNEL);
385 if (!buf)
386 return;
387
388 ret = hid_hw_raw_request(hdev, report->id, buf, size,
389 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
390 if (ret < 0) {
391 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
392 report->id);
393 } else {
394 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
395 size, 0);
396 if (ret)
397 dev_warn(&hdev->dev, "failed to report feature\n");
398 }
399
400 kfree(buf);
401 }
402
403 static void mt_feature_mapping(struct hid_device *hdev,
404 struct hid_field *field, struct hid_usage *usage)
405 {
406 struct mt_device *td = hid_get_drvdata(hdev);
407
408 switch (usage->hid) {
409 case HID_DG_INPUTMODE:
410 /* Ignore if value index is out of bounds. */
411 if (usage->usage_index >= field->report_count) {
412 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
413 break;
414 }
415
416 if (td->inputmode < 0) {
417 td->inputmode = field->report->id;
418 td->inputmode_index = usage->usage_index;
419 } else {
420 /*
421 * Some elan panels wrongly declare 2 input mode
422 * features, and silently ignore when we set the
423 * value in the second field. Skip the second feature
424 * and hope for the best.
425 */
426 dev_info(&hdev->dev,
427 "Ignoring the extra HID_DG_INPUTMODE\n");
428 }
429
430 break;
431 case HID_DG_CONTACTMAX:
432 mt_get_feature(hdev, field->report);
433
434 td->maxcontact_report_id = field->report->id;
435 td->maxcontacts = field->value[0];
436 if (!td->maxcontacts &&
437 field->logical_maximum <= MT_MAX_MAXCONTACT)
438 td->maxcontacts = field->logical_maximum;
439 if (td->mtclass.maxcontacts)
440 /* check if the maxcontacts is given by the class */
441 td->maxcontacts = td->mtclass.maxcontacts;
442
443 break;
444 case HID_DG_BUTTONTYPE:
445 if (usage->usage_index >= field->report_count) {
446 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
447 break;
448 }
449
450 mt_get_feature(hdev, field->report);
451 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
452 td->is_buttonpad = true;
453
454 break;
455 case 0xff0000c5:
456 /* Retrieve the Win8 blob once to enable some devices */
457 if (usage->usage_index == 0)
458 mt_get_feature(hdev, field->report);
459 break;
460 }
461 }
462
463 static void set_abs(struct input_dev *input, unsigned int code,
464 struct hid_field *field, int snratio)
465 {
466 int fmin = field->logical_minimum;
467 int fmax = field->logical_maximum;
468 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
469 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
470 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
471 }
472
473 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
474 struct hid_input *hi)
475 {
476 struct mt_fields *f = td->fields;
477
478 if (f->length >= HID_MAX_FIELDS)
479 return;
480
481 f->usages[f->length++] = usage->hid;
482 }
483
484 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
485 struct hid_field *field, struct hid_usage *usage,
486 unsigned long **bit, int *max)
487 {
488 struct mt_device *td = hid_get_drvdata(hdev);
489 struct mt_class *cls = &td->mtclass;
490 int code;
491 struct hid_usage *prev_usage = NULL;
492
493 if (field->application == HID_DG_TOUCHSCREEN)
494 td->mt_flags |= INPUT_MT_DIRECT;
495
496 /*
497 * Model touchscreens providing buttons as touchpads.
498 */
499 if (field->application == HID_DG_TOUCHPAD ||
500 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
501 td->mt_flags |= INPUT_MT_POINTER;
502 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
503 }
504
505 /* count the buttons on touchpads */
506 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
507 td->buttons_count++;
508
509 if (usage->usage_index)
510 prev_usage = &field->usage[usage->usage_index - 1];
511
512 switch (usage->hid & HID_USAGE_PAGE) {
513
514 case HID_UP_GENDESK:
515 switch (usage->hid) {
516 case HID_GD_X:
517 if (prev_usage && (prev_usage->hid == usage->hid)) {
518 hid_map_usage(hi, usage, bit, max,
519 EV_ABS, ABS_MT_TOOL_X);
520 set_abs(hi->input, ABS_MT_TOOL_X, field,
521 cls->sn_move);
522 } else {
523 hid_map_usage(hi, usage, bit, max,
524 EV_ABS, ABS_MT_POSITION_X);
525 set_abs(hi->input, ABS_MT_POSITION_X, field,
526 cls->sn_move);
527 }
528
529 mt_store_field(usage, td, hi);
530 return 1;
531 case HID_GD_Y:
532 if (prev_usage && (prev_usage->hid == usage->hid)) {
533 hid_map_usage(hi, usage, bit, max,
534 EV_ABS, ABS_MT_TOOL_Y);
535 set_abs(hi->input, ABS_MT_TOOL_Y, field,
536 cls->sn_move);
537 } else {
538 hid_map_usage(hi, usage, bit, max,
539 EV_ABS, ABS_MT_POSITION_Y);
540 set_abs(hi->input, ABS_MT_POSITION_Y, field,
541 cls->sn_move);
542 }
543
544 mt_store_field(usage, td, hi);
545 return 1;
546 }
547 return 0;
548
549 case HID_UP_DIGITIZER:
550 switch (usage->hid) {
551 case HID_DG_INRANGE:
552 if (cls->quirks & MT_QUIRK_HOVERING) {
553 hid_map_usage(hi, usage, bit, max,
554 EV_ABS, ABS_MT_DISTANCE);
555 input_set_abs_params(hi->input,
556 ABS_MT_DISTANCE, 0, 1, 0, 0);
557 }
558 mt_store_field(usage, td, hi);
559 return 1;
560 case HID_DG_CONFIDENCE:
561 if ((cls->name == MT_CLS_WIN_8 ||
562 cls->name == MT_CLS_WIN_8_DUAL) &&
563 field->application == HID_DG_TOUCHPAD)
564 cls->quirks |= MT_QUIRK_CONFIDENCE;
565 mt_store_field(usage, td, hi);
566 return 1;
567 case HID_DG_TIPSWITCH:
568 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
569 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
570 mt_store_field(usage, td, hi);
571 return 1;
572 case HID_DG_CONTACTID:
573 mt_store_field(usage, td, hi);
574 td->touches_by_report++;
575 td->mt_report_id = field->report->id;
576 return 1;
577 case HID_DG_WIDTH:
578 hid_map_usage(hi, usage, bit, max,
579 EV_ABS, ABS_MT_TOUCH_MAJOR);
580 if (!(cls->quirks & MT_QUIRK_NO_AREA))
581 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
582 cls->sn_width);
583 mt_store_field(usage, td, hi);
584 return 1;
585 case HID_DG_HEIGHT:
586 hid_map_usage(hi, usage, bit, max,
587 EV_ABS, ABS_MT_TOUCH_MINOR);
588 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
589 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
590 cls->sn_height);
591
592 /*
593 * Only set ABS_MT_ORIENTATION if it is not
594 * already set by the HID_DG_AZIMUTH usage.
595 */
596 if (!test_bit(ABS_MT_ORIENTATION,
597 hi->input->absbit))
598 input_set_abs_params(hi->input,
599 ABS_MT_ORIENTATION, 0, 1, 0, 0);
600 }
601 mt_store_field(usage, td, hi);
602 return 1;
603 case HID_DG_TIPPRESSURE:
604 hid_map_usage(hi, usage, bit, max,
605 EV_ABS, ABS_MT_PRESSURE);
606 set_abs(hi->input, ABS_MT_PRESSURE, field,
607 cls->sn_pressure);
608 mt_store_field(usage, td, hi);
609 return 1;
610 case HID_DG_SCANTIME:
611 hid_map_usage(hi, usage, bit, max,
612 EV_MSC, MSC_TIMESTAMP);
613 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
614 mt_store_field(usage, td, hi);
615 /* Ignore if indexes are out of bounds. */
616 if (field->index >= field->report->maxfield ||
617 usage->usage_index >= field->report_count)
618 return 1;
619 td->scantime_index = field->index;
620 td->scantime_val_index = usage->usage_index;
621 return 1;
622 case HID_DG_CONTACTCOUNT:
623 /* Ignore if indexes are out of bounds. */
624 if (field->index >= field->report->maxfield ||
625 usage->usage_index >= field->report_count)
626 return 1;
627 td->cc_index = field->index;
628 td->cc_value_index = usage->usage_index;
629 return 1;
630 case HID_DG_AZIMUTH:
631 hid_map_usage(hi, usage, bit, max,
632 EV_ABS, ABS_MT_ORIENTATION);
633 /*
634 * Azimuth has the range of [0, MAX) representing a full
635 * revolution. Set ABS_MT_ORIENTATION to a quarter of
636 * MAX according the definition of ABS_MT_ORIENTATION
637 */
638 input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
639 -field->logical_maximum / 4,
640 field->logical_maximum / 4,
641 cls->sn_move ?
642 field->logical_maximum / cls->sn_move : 0, 0);
643 mt_store_field(usage, td, hi);
644 return 1;
645 case HID_DG_CONTACTMAX:
646 /* we don't set td->last_slot_field as contactcount and
647 * contact max are global to the report */
648 return -1;
649 case HID_DG_TOUCH:
650 /* Legacy devices use TIPSWITCH and not TOUCH.
651 * Let's just ignore this field. */
652 return -1;
653 }
654 /* let hid-input decide for the others */
655 return 0;
656
657 case HID_UP_BUTTON:
658 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
659 /*
660 * MS PTP spec says that external buttons left and right have
661 * usages 2 and 3.
662 */
663 if ((cls->name == MT_CLS_WIN_8 ||
664 cls->name == MT_CLS_WIN_8_DUAL) &&
665 field->application == HID_DG_TOUCHPAD &&
666 (usage->hid & HID_USAGE) > 1)
667 code--;
668 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
669 input_set_capability(hi->input, EV_KEY, code);
670 return 1;
671
672 case 0xff000000:
673 /* we do not want to map these: no input-oriented meaning */
674 return -1;
675 }
676
677 return 0;
678 }
679
680 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
681 {
682 __s32 quirks = td->mtclass.quirks;
683
684 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
685 return td->curdata.contactid;
686
687 if (quirks & MT_QUIRK_CYPRESS)
688 return cypress_compute_slot(td);
689
690 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
691 return td->num_received;
692
693 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
694 return td->curdata.contactid - 1;
695
696 return input_mt_get_slot_by_key(input, td->curdata.contactid);
697 }
698
699 /*
700 * this function is called when a whole contact has been processed,
701 * so that it can assign it to a slot and store the data there
702 */
703 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
704 {
705 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
706 td->num_received >= td->num_expected)
707 return;
708
709 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
710 int active;
711 int slotnum = mt_compute_slot(td, input);
712 struct mt_slot *s = &td->curdata;
713 struct input_mt *mt = input->mt;
714
715 if (slotnum < 0 || slotnum >= td->maxcontacts)
716 return;
717
718 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
719 struct input_mt_slot *slot = &mt->slots[slotnum];
720 if (input_mt_is_active(slot) &&
721 input_mt_is_used(mt, slot))
722 return;
723 }
724
725 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE))
726 s->confidence_state = 1;
727 active = (s->touch_state || s->inrange_state) &&
728 s->confidence_state;
729
730 input_mt_slot(input, slotnum);
731 input_mt_report_slot_state(input, MT_TOOL_FINGER, active);
732 if (active) {
733 /* this finger is in proximity of the sensor */
734 int wide = (s->w > s->h);
735 int major = max(s->w, s->h);
736 int minor = min(s->w, s->h);
737 int orientation = wide;
738
739 if (s->has_azimuth)
740 orientation = s->a;
741
742 /*
743 * divided by two to match visual scale of touch
744 * for devices with this quirk
745 */
746 if (td->mtclass.quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
747 major = major >> 1;
748 minor = minor >> 1;
749 }
750
751 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
752 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
753 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
754 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
755 input_event(input, EV_ABS, ABS_MT_DISTANCE,
756 !s->touch_state);
757 input_event(input, EV_ABS, ABS_MT_ORIENTATION,
758 orientation);
759 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
760 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
761 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
762
763 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
764 }
765 }
766
767 td->num_received++;
768 }
769
770 /*
771 * this function is called when a whole packet has been received and processed,
772 * so that it can decide what to send to the input layer.
773 */
774 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
775 {
776 __s32 cls = td->mtclass.name;
777
778 if (cls == MT_CLS_WIN_8 || cls == MT_CLS_WIN_8_DUAL)
779 input_event(input, EV_KEY, BTN_LEFT, td->left_button_state);
780
781 input_mt_sync_frame(input);
782 input_event(input, EV_MSC, MSC_TIMESTAMP, td->timestamp);
783 input_sync(input);
784 td->num_received = 0;
785 td->left_button_state = 0;
786 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
787 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
788 else
789 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
790 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
791 }
792
793 static int mt_compute_timestamp(struct mt_device *td, struct hid_field *field,
794 __s32 value)
795 {
796 long delta = value - td->dev_time;
797 unsigned long jdelta = jiffies_to_usecs(jiffies - td->jiffies);
798
799 td->jiffies = jiffies;
800 td->dev_time = value;
801
802 if (delta < 0)
803 delta += field->logical_maximum;
804
805 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
806 delta *= 100;
807
808 if (jdelta > MAX_TIMESTAMP_INTERVAL)
809 /* No data received for a while, resync the timestamp. */
810 return 0;
811 else
812 return td->timestamp + delta;
813 }
814
815 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
816 struct hid_usage *usage, __s32 value)
817 {
818 /* we will handle the hidinput part later, now remains hiddev */
819 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
820 hid->hiddev_hid_event(hid, field, usage, value);
821
822 return 1;
823 }
824
825 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
826 struct hid_usage *usage, __s32 value,
827 bool first_packet)
828 {
829 struct mt_device *td = hid_get_drvdata(hid);
830 __s32 cls = td->mtclass.name;
831 __s32 quirks = td->mtclass.quirks;
832 struct input_dev *input = field->hidinput->input;
833
834 if (hid->claimed & HID_CLAIMED_INPUT) {
835 switch (usage->hid) {
836 case HID_DG_INRANGE:
837 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
838 td->curvalid = value;
839 if (quirks & MT_QUIRK_HOVERING)
840 td->curdata.inrange_state = value;
841 break;
842 case HID_DG_TIPSWITCH:
843 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
844 td->curvalid = value;
845 td->curdata.touch_state = value;
846 break;
847 case HID_DG_CONFIDENCE:
848 if (quirks & MT_QUIRK_CONFIDENCE)
849 td->curdata.confidence_state = value;
850 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
851 td->curvalid = value;
852 break;
853 case HID_DG_CONTACTID:
854 td->curdata.contactid = value;
855 break;
856 case HID_DG_TIPPRESSURE:
857 td->curdata.p = value;
858 break;
859 case HID_GD_X:
860 if (usage->code == ABS_MT_TOOL_X)
861 td->curdata.cx = value;
862 else
863 td->curdata.x = value;
864 break;
865 case HID_GD_Y:
866 if (usage->code == ABS_MT_TOOL_Y)
867 td->curdata.cy = value;
868 else
869 td->curdata.y = value;
870 break;
871 case HID_DG_WIDTH:
872 td->curdata.w = value;
873 break;
874 case HID_DG_HEIGHT:
875 td->curdata.h = value;
876 break;
877 case HID_DG_SCANTIME:
878 td->timestamp = mt_compute_timestamp(td, field, value);
879 break;
880 case HID_DG_CONTACTCOUNT:
881 break;
882 case HID_DG_AZIMUTH:
883 /*
884 * Azimuth is counter-clockwise and ranges from [0, MAX)
885 * (a full revolution). Convert it to clockwise ranging
886 * [-MAX/2, MAX/2].
887 *
888 * Note that ABS_MT_ORIENTATION require us to report
889 * the limit of [-MAX/4, MAX/4], but the value can go
890 * out of range to [-MAX/2, MAX/2] to report an upside
891 * down ellipsis.
892 */
893 if (value > field->logical_maximum / 2)
894 value -= field->logical_maximum;
895 td->curdata.a = -value;
896 td->curdata.has_azimuth = true;
897 break;
898 case HID_DG_TOUCH:
899 /* do nothing */
900 break;
901
902 default:
903 /*
904 * For Win8 PTP touchpads we should only look at
905 * non finger/touch events in the first_packet of
906 * a (possible) multi-packet frame.
907 */
908 if ((cls == MT_CLS_WIN_8 || cls == MT_CLS_WIN_8_DUAL) &&
909 !first_packet)
910 return;
911
912 /*
913 * For Win8 PTP touchpads we map both the clickpad click
914 * and any "external" left buttons to BTN_LEFT if a
915 * device claims to have both we need to report 1 for
916 * BTN_LEFT if either is pressed, so we or all values
917 * together and report the result in mt_sync_frame().
918 */
919 if ((cls == MT_CLS_WIN_8 || cls == MT_CLS_WIN_8_DUAL) &&
920 usage->type == EV_KEY && usage->code == BTN_LEFT) {
921 td->left_button_state |= value;
922 return;
923 }
924
925 if (usage->type)
926 input_event(input, usage->type, usage->code,
927 value);
928 return;
929 }
930
931 if (usage->usage_index + 1 == field->report_count) {
932 /* we only take into account the last report. */
933 if (usage->hid == td->last_slot_field)
934 mt_complete_slot(td, field->hidinput->input);
935 }
936
937 }
938 }
939
940 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
941 {
942 struct mt_device *td = hid_get_drvdata(hid);
943 __s32 cls = td->mtclass.name;
944 struct hid_field *field;
945 bool first_packet;
946 unsigned count;
947 int r, n, scantime = 0;
948
949 /* sticky fingers release in progress, abort */
950 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
951 return;
952
953 /*
954 * Includes multi-packet support where subsequent
955 * packets are sent with zero contactcount.
956 */
957 if (td->scantime_index >= 0) {
958 field = report->field[td->scantime_index];
959 scantime = field->value[td->scantime_val_index];
960 }
961 if (td->cc_index >= 0) {
962 struct hid_field *field = report->field[td->cc_index];
963 int value = field->value[td->cc_value_index];
964
965 /*
966 * For Win8 PTPs the first packet (td->num_received == 0) may
967 * have a contactcount of 0 if there only is a button event.
968 * We double check that this is not a continuation packet
969 * of a possible multi-packet frame be checking that the
970 * timestamp has changed.
971 */
972 if ((cls == MT_CLS_WIN_8 || cls == MT_CLS_WIN_8_DUAL) &&
973 td->num_received == 0 && td->prev_scantime != scantime)
974 td->num_expected = value;
975 /* A non 0 contact count always indicates a first packet */
976 else if (value)
977 td->num_expected = value;
978 }
979 td->prev_scantime = scantime;
980
981 first_packet = td->num_received == 0;
982 for (r = 0; r < report->maxfield; r++) {
983 field = report->field[r];
984 count = field->report_count;
985
986 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
987 continue;
988
989 for (n = 0; n < count; n++)
990 mt_process_mt_event(hid, field, &field->usage[n],
991 field->value[n], first_packet);
992 }
993
994 if (td->num_received >= td->num_expected)
995 mt_sync_frame(td, report->field[0]->hidinput->input);
996
997 /*
998 * Windows 8 specs says 2 things:
999 * - once a contact has been reported, it has to be reported in each
1000 * subsequent report
1001 * - the report rate when fingers are present has to be at least
1002 * the refresh rate of the screen, 60 or 120 Hz
1003 *
1004 * I interprete this that the specification forces a report rate of
1005 * at least 60 Hz for a touchscreen to be certified.
1006 * Which means that if we do not get a report whithin 16 ms, either
1007 * something wrong happens, either the touchscreen forgets to send
1008 * a release. Taking a reasonable margin allows to remove issues
1009 * with USB communication or the load of the machine.
1010 *
1011 * Given that Win 8 devices are forced to send a release, this will
1012 * only affect laggish machines and the ones that have a firmware
1013 * defect.
1014 */
1015 if (td->mtclass.quirks & MT_QUIRK_STICKY_FINGERS) {
1016 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1017 mod_timer(&td->release_timer,
1018 jiffies + msecs_to_jiffies(100));
1019 else
1020 del_timer(&td->release_timer);
1021 }
1022
1023 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1024 }
1025
1026 static int mt_touch_input_configured(struct hid_device *hdev,
1027 struct hid_input *hi)
1028 {
1029 struct mt_device *td = hid_get_drvdata(hdev);
1030 struct mt_class *cls = &td->mtclass;
1031 struct input_dev *input = hi->input;
1032 int ret;
1033
1034 if (!td->maxcontacts)
1035 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
1036
1037 mt_post_parse(td);
1038 if (td->serial_maybe)
1039 mt_post_parse_default_settings(td);
1040
1041 if (cls->is_indirect)
1042 td->mt_flags |= INPUT_MT_POINTER;
1043
1044 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
1045 td->mt_flags |= INPUT_MT_DROP_UNUSED;
1046
1047 /* check for clickpads */
1048 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
1049 td->is_buttonpad = true;
1050
1051 if (td->is_buttonpad)
1052 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
1053
1054 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
1055 if (ret)
1056 return ret;
1057
1058 td->mt_flags = 0;
1059 return 0;
1060 }
1061
1062 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
1063 max, EV_KEY, (c))
1064 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
1065 struct hid_field *field, struct hid_usage *usage,
1066 unsigned long **bit, int *max)
1067 {
1068 struct mt_device *td = hid_get_drvdata(hdev);
1069
1070 /*
1071 * If mtclass.export_all_inputs is not set, only map fields from
1072 * TouchScreen or TouchPad collections. We need to ignore fields
1073 * that belong to other collections such as Mouse that might have
1074 * the same GenericDesktop usages.
1075 */
1076 if (!td->mtclass.export_all_inputs &&
1077 field->application != HID_DG_TOUCHSCREEN &&
1078 field->application != HID_DG_PEN &&
1079 field->application != HID_DG_TOUCHPAD &&
1080 field->application != HID_GD_KEYBOARD &&
1081 field->application != HID_GD_SYSTEM_CONTROL &&
1082 field->application != HID_CP_CONSUMER_CONTROL &&
1083 field->application != HID_GD_WIRELESS_RADIO_CTLS &&
1084 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1085 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP))
1086 return -1;
1087
1088 /*
1089 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
1090 * touchpad report descriptor. We need to treat these as an array to
1091 * map usages to input keys.
1092 */
1093 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1094 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
1095 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
1096 set_bit(EV_REP, hi->input->evbit);
1097 if (field->flags & HID_MAIN_ITEM_VARIABLE)
1098 field->flags &= ~HID_MAIN_ITEM_VARIABLE;
1099 switch (usage->hid & HID_USAGE) {
1100 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break;
1101 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break;
1102 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break;
1103 case 0x6b: mt_map_key_clear(KEY_F21); break;
1104 case 0x6c: mt_map_key_clear(KEY_SLEEP); break;
1105 default:
1106 return -1;
1107 }
1108 return 1;
1109 }
1110
1111 /*
1112 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1113 * for the stylus.
1114 * The check for mt_report_id ensures we don't process
1115 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
1116 * collection, but within the report ID.
1117 */
1118 if (field->physical == HID_DG_STYLUS)
1119 return 0;
1120 else if ((field->physical == 0) &&
1121 (field->report->id != td->mt_report_id) &&
1122 (td->mt_report_id != -1))
1123 return 0;
1124
1125 if (field->application == HID_DG_TOUCHSCREEN ||
1126 field->application == HID_DG_TOUCHPAD)
1127 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
1128
1129 /* let hid-core decide for the others */
1130 return 0;
1131 }
1132
1133 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
1134 struct hid_field *field, struct hid_usage *usage,
1135 unsigned long **bit, int *max)
1136 {
1137 /*
1138 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1139 * for the stylus.
1140 */
1141 if (field->physical == HID_DG_STYLUS)
1142 return 0;
1143
1144 if (field->application == HID_DG_TOUCHSCREEN ||
1145 field->application == HID_DG_TOUCHPAD) {
1146 /* We own these mappings, tell hid-input to ignore them */
1147 return -1;
1148 }
1149
1150 /* let hid-core decide for the others */
1151 return 0;
1152 }
1153
1154 static int mt_event(struct hid_device *hid, struct hid_field *field,
1155 struct hid_usage *usage, __s32 value)
1156 {
1157 struct mt_device *td = hid_get_drvdata(hid);
1158
1159 if (field->report->id == td->mt_report_id)
1160 return mt_touch_event(hid, field, usage, value);
1161
1162 return 0;
1163 }
1164
1165 static void mt_report(struct hid_device *hid, struct hid_report *report)
1166 {
1167 struct mt_device *td = hid_get_drvdata(hid);
1168 struct hid_field *field = report->field[0];
1169
1170 if (!(hid->claimed & HID_CLAIMED_INPUT))
1171 return;
1172
1173 if (report->id == td->mt_report_id)
1174 return mt_touch_report(hid, report);
1175
1176 if (field && field->hidinput && field->hidinput->input)
1177 input_sync(field->hidinput->input);
1178 }
1179
1180 static void mt_set_input_mode(struct hid_device *hdev)
1181 {
1182 struct mt_device *td = hid_get_drvdata(hdev);
1183 struct hid_report *r;
1184 struct hid_report_enum *re;
1185 struct mt_class *cls = &td->mtclass;
1186 char *buf;
1187 u32 report_len;
1188
1189 if (td->inputmode < 0)
1190 return;
1191
1192 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
1193 r = re->report_id_hash[td->inputmode];
1194 if (r) {
1195 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1196 report_len = hid_report_len(r);
1197 buf = hid_alloc_report_buf(r, GFP_KERNEL);
1198 if (!buf) {
1199 hid_err(hdev, "failed to allocate buffer for report\n");
1200 return;
1201 }
1202 hid_hw_raw_request(hdev, r->id, buf, report_len,
1203 HID_FEATURE_REPORT,
1204 HID_REQ_GET_REPORT);
1205 kfree(buf);
1206 }
1207 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
1208 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
1209 }
1210 }
1211
1212 static void mt_set_maxcontacts(struct hid_device *hdev)
1213 {
1214 struct mt_device *td = hid_get_drvdata(hdev);
1215 struct hid_report *r;
1216 struct hid_report_enum *re;
1217 int fieldmax, max;
1218
1219 if (td->maxcontact_report_id < 0)
1220 return;
1221
1222 if (!td->mtclass.maxcontacts)
1223 return;
1224
1225 re = &hdev->report_enum[HID_FEATURE_REPORT];
1226 r = re->report_id_hash[td->maxcontact_report_id];
1227 if (r) {
1228 max = td->mtclass.maxcontacts;
1229 fieldmax = r->field[0]->logical_maximum;
1230 max = min(fieldmax, max);
1231 if (r->field[0]->value[0] != max) {
1232 r->field[0]->value[0] = max;
1233 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
1234 }
1235 }
1236 }
1237
1238 static void mt_post_parse_default_settings(struct mt_device *td)
1239 {
1240 __s32 quirks = td->mtclass.quirks;
1241
1242 /* unknown serial device needs special quirks */
1243 if (td->touches_by_report == 1) {
1244 quirks |= MT_QUIRK_ALWAYS_VALID;
1245 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1246 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1247 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1248 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1249 }
1250
1251 td->mtclass.quirks = quirks;
1252 }
1253
1254 static void mt_post_parse(struct mt_device *td)
1255 {
1256 struct mt_fields *f = td->fields;
1257 struct mt_class *cls = &td->mtclass;
1258
1259 if (td->touches_by_report > 0) {
1260 int field_count_per_touch = f->length / td->touches_by_report;
1261 td->last_slot_field = f->usages[field_count_per_touch - 1];
1262 }
1263
1264 if (td->cc_index < 0)
1265 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1266 }
1267
1268 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1269 {
1270 struct mt_device *td = hid_get_drvdata(hdev);
1271 char *name;
1272 const char *suffix = NULL;
1273 struct hid_field *field = hi->report->field[0];
1274 int ret;
1275
1276 if (hi->report->id == td->mt_report_id) {
1277 ret = mt_touch_input_configured(hdev, hi);
1278 if (ret)
1279 return ret;
1280 }
1281
1282 /*
1283 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1284 * for the stylus. Check this first, and then rely on the application
1285 * field.
1286 */
1287 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
1288 suffix = "Pen";
1289 /* force BTN_STYLUS to allow tablet matching in udev */
1290 __set_bit(BTN_STYLUS, hi->input->keybit);
1291 } else {
1292 switch (field->application) {
1293 case HID_GD_KEYBOARD:
1294 suffix = "Keyboard";
1295 break;
1296 case HID_GD_KEYPAD:
1297 suffix = "Keypad";
1298 break;
1299 case HID_GD_MOUSE:
1300 suffix = "Mouse";
1301 break;
1302 case HID_DG_STYLUS:
1303 suffix = "Pen";
1304 /* force BTN_STYLUS to allow tablet matching in udev */
1305 __set_bit(BTN_STYLUS, hi->input->keybit);
1306 break;
1307 case HID_DG_TOUCHSCREEN:
1308 /* we do not set suffix = "Touchscreen" */
1309 break;
1310 case HID_DG_TOUCHPAD:
1311 suffix = "Touchpad";
1312 break;
1313 case HID_GD_SYSTEM_CONTROL:
1314 suffix = "System Control";
1315 break;
1316 case HID_CP_CONSUMER_CONTROL:
1317 suffix = "Consumer Control";
1318 break;
1319 case HID_GD_WIRELESS_RADIO_CTLS:
1320 suffix = "Wireless Radio Control";
1321 break;
1322 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1323 suffix = "Custom Media Keys";
1324 break;
1325 default:
1326 suffix = "UNKNOWN";
1327 break;
1328 }
1329 }
1330
1331 if (suffix) {
1332 name = devm_kzalloc(&hi->input->dev,
1333 strlen(hdev->name) + strlen(suffix) + 2,
1334 GFP_KERNEL);
1335 if (name) {
1336 sprintf(name, "%s %s", hdev->name, suffix);
1337 hi->input->name = name;
1338 }
1339 }
1340
1341 return 0;
1342 }
1343
1344 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1345 {
1346 if (field->usage[0].hid != usage ||
1347 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1348 return;
1349
1350 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1351 field->flags |= HID_MAIN_ITEM_VARIABLE;
1352 }
1353
1354 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1355 {
1356 struct hid_report *report;
1357 int i;
1358
1359 list_for_each_entry(report,
1360 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1361 list) {
1362
1363 if (!report->maxfield)
1364 continue;
1365
1366 for (i = 0; i < report->maxfield; i++)
1367 if (report->field[i]->maxusage >= 1)
1368 mt_fix_const_field(report->field[i], usage);
1369 }
1370 }
1371
1372 static void mt_release_contacts(struct hid_device *hid)
1373 {
1374 struct hid_input *hidinput;
1375 struct mt_device *td = hid_get_drvdata(hid);
1376
1377 list_for_each_entry(hidinput, &hid->inputs, list) {
1378 struct input_dev *input_dev = hidinput->input;
1379 struct input_mt *mt = input_dev->mt;
1380 int i;
1381
1382 if (mt) {
1383 for (i = 0; i < mt->num_slots; i++) {
1384 input_mt_slot(input_dev, i);
1385 input_mt_report_slot_state(input_dev,
1386 MT_TOOL_FINGER,
1387 false);
1388 }
1389 input_mt_sync_frame(input_dev);
1390 input_sync(input_dev);
1391 }
1392 }
1393
1394 td->num_received = 0;
1395 }
1396
1397 static void mt_expired_timeout(struct timer_list *t)
1398 {
1399 struct mt_device *td = from_timer(td, t, release_timer);
1400 struct hid_device *hdev = td->hdev;
1401
1402 /*
1403 * An input report came in just before we release the sticky fingers,
1404 * it will take care of the sticky fingers.
1405 */
1406 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1407 return;
1408 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1409 mt_release_contacts(hdev);
1410 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1411 }
1412
1413 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1414 {
1415 int ret, i;
1416 struct mt_device *td;
1417 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1418
1419 for (i = 0; mt_classes[i].name ; i++) {
1420 if (id->driver_data == mt_classes[i].name) {
1421 mtclass = &(mt_classes[i]);
1422 break;
1423 }
1424 }
1425
1426 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1427 if (!td) {
1428 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1429 return -ENOMEM;
1430 }
1431 td->hdev = hdev;
1432 td->mtclass = *mtclass;
1433 td->inputmode = -1;
1434 td->maxcontact_report_id = -1;
1435 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1436 td->cc_index = -1;
1437 td->scantime_index = -1;
1438 td->mt_report_id = -1;
1439 hid_set_drvdata(hdev, td);
1440
1441 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1442 GFP_KERNEL);
1443 if (!td->fields) {
1444 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
1445 return -ENOMEM;
1446 }
1447
1448 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1449 td->serial_maybe = true;
1450
1451 /*
1452 * Store the initial quirk state
1453 */
1454 td->initial_quirks = hdev->quirks;
1455
1456 /* This allows the driver to correctly support devices
1457 * that emit events over several HID messages.
1458 */
1459 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1460
1461 /*
1462 * This allows the driver to handle different input sensors
1463 * that emits events through different reports on the same HID
1464 * device.
1465 */
1466 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1467 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1468
1469 /*
1470 * Some multitouch screens do not like to be polled for input
1471 * reports. Fortunately, the Win8 spec says that all touches
1472 * should be sent during each report, making the initialization
1473 * of input reports unnecessary. For Win7 devices, well, let's hope
1474 * they will still be happy (this is only be a problem if a touch
1475 * was already there while probing the device).
1476 *
1477 * In addition some touchpads do not behave well if we read
1478 * all feature reports from them. Instead we prevent
1479 * initial report fetching and then selectively fetch each
1480 * report we are interested in.
1481 */
1482 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1483
1484 timer_setup(&td->release_timer, mt_expired_timeout, 0);
1485
1486 ret = hid_parse(hdev);
1487 if (ret != 0)
1488 return ret;
1489
1490 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1491 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1492
1493 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1494 if (ret)
1495 return ret;
1496
1497 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1498 if (ret)
1499 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1500 hdev->name);
1501
1502 mt_set_maxcontacts(hdev);
1503 mt_set_input_mode(hdev);
1504
1505 /* release .fields memory as it is not used anymore */
1506 devm_kfree(&hdev->dev, td->fields);
1507 td->fields = NULL;
1508
1509 return 0;
1510 }
1511
1512 #ifdef CONFIG_PM
1513 static int mt_reset_resume(struct hid_device *hdev)
1514 {
1515 mt_release_contacts(hdev);
1516 mt_set_maxcontacts(hdev);
1517 mt_set_input_mode(hdev);
1518 return 0;
1519 }
1520
1521 static int mt_resume(struct hid_device *hdev)
1522 {
1523 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1524 * It should be safe to send it to other devices too.
1525 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1526
1527 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1528
1529 return 0;
1530 }
1531 #endif
1532
1533 static void mt_remove(struct hid_device *hdev)
1534 {
1535 struct mt_device *td = hid_get_drvdata(hdev);
1536
1537 del_timer_sync(&td->release_timer);
1538
1539 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1540 hid_hw_stop(hdev);
1541 hdev->quirks = td->initial_quirks;
1542 }
1543
1544 /*
1545 * This list contains only:
1546 * - VID/PID of products not working with the default multitouch handling
1547 * - 2 generic rules.
1548 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1549 */
1550 static const struct hid_device_id mt_devices[] = {
1551
1552 /* 3M panels */
1553 { .driver_data = MT_CLS_3M,
1554 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1555 USB_DEVICE_ID_3M1968) },
1556 { .driver_data = MT_CLS_3M,
1557 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1558 USB_DEVICE_ID_3M2256) },
1559 { .driver_data = MT_CLS_3M,
1560 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1561 USB_DEVICE_ID_3M3266) },
1562
1563 /* Alps devices */
1564 { .driver_data = MT_CLS_WIN_8_DUAL,
1565 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1566 USB_VENDOR_ID_ALPS_JP,
1567 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) },
1568 { .driver_data = MT_CLS_WIN_8_DUAL,
1569 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1570 USB_VENDOR_ID_ALPS_JP,
1571 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) },
1572
1573 /* Lenovo X1 TAB Gen 2 */
1574 { .driver_data = MT_CLS_WIN_8_DUAL,
1575 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1576 USB_VENDOR_ID_LENOVO,
1577 USB_DEVICE_ID_LENOVO_X1_TAB) },
1578
1579 /* Anton devices */
1580 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1581 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1582 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1583
1584 /* Asus T304UA */
1585 { .driver_data = MT_CLS_ASUS,
1586 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1587 USB_VENDOR_ID_ASUSTEK,
1588 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
1589
1590 /* Atmel panels */
1591 { .driver_data = MT_CLS_SERIAL,
1592 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1593 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1594
1595 /* Baanto multitouch devices */
1596 { .driver_data = MT_CLS_NSMU,
1597 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1598 USB_DEVICE_ID_BAANTO_MT_190W2) },
1599
1600 /* Cando panels */
1601 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1602 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1603 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1604 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1605 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1606 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1607
1608 /* Chunghwa Telecom touch panels */
1609 { .driver_data = MT_CLS_NSMU,
1610 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1611 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1612
1613 /* CJTouch panels */
1614 { .driver_data = MT_CLS_NSMU,
1615 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1616 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1617 { .driver_data = MT_CLS_NSMU,
1618 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1619 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1620
1621 /* CVTouch panels */
1622 { .driver_data = MT_CLS_NSMU,
1623 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1624 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1625
1626 /* eGalax devices (resistive) */
1627 { .driver_data = MT_CLS_EGALAX,
1628 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1629 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1630 { .driver_data = MT_CLS_EGALAX,
1631 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1632 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1633
1634 /* eGalax devices (capacitive) */
1635 { .driver_data = MT_CLS_EGALAX_SERIAL,
1636 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1637 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1638 { .driver_data = MT_CLS_EGALAX,
1639 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1640 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1641 { .driver_data = MT_CLS_EGALAX_SERIAL,
1642 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1643 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1644 { .driver_data = MT_CLS_EGALAX_SERIAL,
1645 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1646 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1647 { .driver_data = MT_CLS_EGALAX_SERIAL,
1648 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1649 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1650 { .driver_data = MT_CLS_EGALAX_SERIAL,
1651 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1652 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1653 { .driver_data = MT_CLS_EGALAX,
1654 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1655 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1656 { .driver_data = MT_CLS_EGALAX,
1657 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1658 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1659 { .driver_data = MT_CLS_EGALAX_SERIAL,
1660 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1661 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1662 { .driver_data = MT_CLS_EGALAX,
1663 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1664 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1665 { .driver_data = MT_CLS_EGALAX,
1666 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1667 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1668 { .driver_data = MT_CLS_EGALAX,
1669 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1670 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1671 { .driver_data = MT_CLS_EGALAX,
1672 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1673 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1674 { .driver_data = MT_CLS_EGALAX_SERIAL,
1675 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1676 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1677 { .driver_data = MT_CLS_EGALAX_SERIAL,
1678 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1679 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1680 { .driver_data = MT_CLS_EGALAX_SERIAL,
1681 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1682 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1683
1684 /* Elitegroup panel */
1685 { .driver_data = MT_CLS_SERIAL,
1686 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1687 USB_DEVICE_ID_ELITEGROUP_05D8) },
1688
1689 /* Flatfrog Panels */
1690 { .driver_data = MT_CLS_FLATFROG,
1691 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1692 USB_DEVICE_ID_MULTITOUCH_3200) },
1693
1694 /* FocalTech Panels */
1695 { .driver_data = MT_CLS_SERIAL,
1696 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1697 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1698
1699 /* GeneralTouch panel */
1700 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1701 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1702 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1703 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1704 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1705 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1706 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1707 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1708 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1709 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1710 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1711 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1712 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1713 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1714 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1715 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1716 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1717 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1718 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1719 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1720 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1721
1722 /* Gametel game controller */
1723 { .driver_data = MT_CLS_NSMU,
1724 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1725 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1726
1727 /* GoodTouch panels */
1728 { .driver_data = MT_CLS_NSMU,
1729 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1730 USB_DEVICE_ID_GOODTOUCH_000f) },
1731
1732 /* Hanvon panels */
1733 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1734 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1735 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1736
1737 /* Ilitek dual touch panel */
1738 { .driver_data = MT_CLS_NSMU,
1739 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1740 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1741
1742 /* LG Melfas panel */
1743 { .driver_data = MT_CLS_LG,
1744 HID_USB_DEVICE(USB_VENDOR_ID_LG,
1745 USB_DEVICE_ID_LG_MELFAS_MT) },
1746
1747 /* MosArt panels */
1748 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1749 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1750 USB_DEVICE_ID_ASUS_T91MT)},
1751 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1752 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1753 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1754 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1755 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1756 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1757
1758 /* Novatek Panel */
1759 { .driver_data = MT_CLS_NSMU,
1760 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1761 USB_DEVICE_ID_NOVATEK_PCT) },
1762
1763 /* Ntrig Panel */
1764 { .driver_data = MT_CLS_NSMU,
1765 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1766 USB_VENDOR_ID_NTRIG, 0x1b05) },
1767
1768 /* Panasonic panels */
1769 { .driver_data = MT_CLS_PANASONIC,
1770 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1771 USB_DEVICE_ID_PANABOARD_UBT780) },
1772 { .driver_data = MT_CLS_PANASONIC,
1773 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1774 USB_DEVICE_ID_PANABOARD_UBT880) },
1775
1776 /* PixArt optical touch screen */
1777 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1778 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1779 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1780 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1781 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1782 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1783 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1784 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1785 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1786
1787 /* PixCir-based panels */
1788 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1789 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1790 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1791
1792 /* Quanta-based panels */
1793 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1794 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1795 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1796
1797 /* Stantum panels */
1798 { .driver_data = MT_CLS_CONFIDENCE,
1799 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1800 USB_DEVICE_ID_MTP_STM)},
1801
1802 /* TopSeed panels */
1803 { .driver_data = MT_CLS_TOPSEED,
1804 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1805 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1806
1807 /* Touch International panels */
1808 { .driver_data = MT_CLS_NSMU,
1809 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1810 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1811
1812 /* Unitec panels */
1813 { .driver_data = MT_CLS_NSMU,
1814 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1815 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1816 { .driver_data = MT_CLS_NSMU,
1817 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1818 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1819
1820 /* VTL panels */
1821 { .driver_data = MT_CLS_VTL,
1822 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1823 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1824
1825 /* Wistron panels */
1826 { .driver_data = MT_CLS_NSMU,
1827 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1828 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1829
1830 /* XAT */
1831 { .driver_data = MT_CLS_NSMU,
1832 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1833 USB_DEVICE_ID_XAT_CSR) },
1834
1835 /* Xiroku */
1836 { .driver_data = MT_CLS_NSMU,
1837 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1838 USB_DEVICE_ID_XIROKU_SPX) },
1839 { .driver_data = MT_CLS_NSMU,
1840 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1841 USB_DEVICE_ID_XIROKU_MPX) },
1842 { .driver_data = MT_CLS_NSMU,
1843 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1844 USB_DEVICE_ID_XIROKU_CSR) },
1845 { .driver_data = MT_CLS_NSMU,
1846 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1847 USB_DEVICE_ID_XIROKU_SPX1) },
1848 { .driver_data = MT_CLS_NSMU,
1849 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1850 USB_DEVICE_ID_XIROKU_MPX1) },
1851 { .driver_data = MT_CLS_NSMU,
1852 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1853 USB_DEVICE_ID_XIROKU_CSR1) },
1854 { .driver_data = MT_CLS_NSMU,
1855 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1856 USB_DEVICE_ID_XIROKU_SPX2) },
1857 { .driver_data = MT_CLS_NSMU,
1858 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1859 USB_DEVICE_ID_XIROKU_MPX2) },
1860 { .driver_data = MT_CLS_NSMU,
1861 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1862 USB_DEVICE_ID_XIROKU_CSR2) },
1863
1864 /* Google MT devices */
1865 { .driver_data = MT_CLS_GOOGLE,
1866 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
1867 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
1868
1869 /* Generic MT device */
1870 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1871
1872 /* Generic Win 8 certified MT device */
1873 { .driver_data = MT_CLS_WIN_8,
1874 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1875 HID_ANY_ID, HID_ANY_ID) },
1876 { }
1877 };
1878 MODULE_DEVICE_TABLE(hid, mt_devices);
1879
1880 static const struct hid_usage_id mt_grabbed_usages[] = {
1881 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1882 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1883 };
1884
1885 static struct hid_driver mt_driver = {
1886 .name = "hid-multitouch",
1887 .id_table = mt_devices,
1888 .probe = mt_probe,
1889 .remove = mt_remove,
1890 .input_mapping = mt_input_mapping,
1891 .input_mapped = mt_input_mapped,
1892 .input_configured = mt_input_configured,
1893 .feature_mapping = mt_feature_mapping,
1894 .usage_table = mt_grabbed_usages,
1895 .event = mt_event,
1896 .report = mt_report,
1897 #ifdef CONFIG_PM
1898 .reset_resume = mt_reset_resume,
1899 .resume = mt_resume,
1900 #endif
1901 };
1902 module_hid_driver(mt_driver);
Linux with added FPC-III support