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Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / drivers / hid / hid-multitouch.c
blob3b4739bde05d3b6dcd2417beeda479d00cb1afc7
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, size = hid_report_len(report);
374 u8 *buf;
375
376 /*
377 * Do not fetch the feature report if the device has been explicitly
378 * marked as non-capable.
379 */
380 if (td->initial_quirks & HID_QUIRK_NO_INIT_REPORTS)
381 return;
382
383 buf = hid_alloc_report_buf(report, GFP_KERNEL);
384 if (!buf)
385 return;
386
387 ret = hid_hw_raw_request(hdev, report->id, buf, size,
388 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
389 if (ret < 0) {
390 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
391 report->id);
392 } else {
393 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
394 size, 0);
395 if (ret)
396 dev_warn(&hdev->dev, "failed to report feature\n");
397 }
398
399 kfree(buf);
400 }
401
402 static void mt_feature_mapping(struct hid_device *hdev,
403 struct hid_field *field, struct hid_usage *usage)
404 {
405 struct mt_device *td = hid_get_drvdata(hdev);
406
407 switch (usage->hid) {
408 case HID_DG_INPUTMODE:
409 /* Ignore if value index is out of bounds. */
410 if (usage->usage_index >= field->report_count) {
411 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
412 break;
413 }
414
415 if (td->inputmode < 0) {
416 td->inputmode = field->report->id;
417 td->inputmode_index = usage->usage_index;
418 } else {
419 /*
420 * Some elan panels wrongly declare 2 input mode
421 * features, and silently ignore when we set the
422 * value in the second field. Skip the second feature
423 * and hope for the best.
424 */
425 dev_info(&hdev->dev,
426 "Ignoring the extra HID_DG_INPUTMODE\n");
427 }
428
429 break;
430 case HID_DG_CONTACTMAX:
431 mt_get_feature(hdev, field->report);
432
433 td->maxcontact_report_id = field->report->id;
434 td->maxcontacts = field->value[0];
435 if (!td->maxcontacts &&
436 field->logical_maximum <= MT_MAX_MAXCONTACT)
437 td->maxcontacts = field->logical_maximum;
438 if (td->mtclass.maxcontacts)
439 /* check if the maxcontacts is given by the class */
440 td->maxcontacts = td->mtclass.maxcontacts;
441
442 break;
443 case HID_DG_BUTTONTYPE:
444 if (usage->usage_index >= field->report_count) {
445 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
446 break;
447 }
448
449 mt_get_feature(hdev, field->report);
450 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
451 td->is_buttonpad = true;
452
453 break;
454 case 0xff0000c5:
455 /* Retrieve the Win8 blob once to enable some devices */
456 if (usage->usage_index == 0)
457 mt_get_feature(hdev, field->report);
458 break;
459 }
460 }
461
462 static void set_abs(struct input_dev *input, unsigned int code,
463 struct hid_field *field, int snratio)
464 {
465 int fmin = field->logical_minimum;
466 int fmax = field->logical_maximum;
467 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
468 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
469 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
470 }
471
472 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
473 struct hid_input *hi)
474 {
475 struct mt_fields *f = td->fields;
476
477 if (f->length >= HID_MAX_FIELDS)
478 return;
479
480 f->usages[f->length++] = usage->hid;
481 }
482
483 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
484 struct hid_field *field, struct hid_usage *usage,
485 unsigned long **bit, int *max)
486 {
487 struct mt_device *td = hid_get_drvdata(hdev);
488 struct mt_class *cls = &td->mtclass;
489 int code;
490 struct hid_usage *prev_usage = NULL;
491
492 if (field->application == HID_DG_TOUCHSCREEN)
493 td->mt_flags |= INPUT_MT_DIRECT;
494
495 /*
496 * Model touchscreens providing buttons as touchpads.
497 */
498 if (field->application == HID_DG_TOUCHPAD ||
499 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
500 td->mt_flags |= INPUT_MT_POINTER;
501 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
502 }
503
504 /* count the buttons on touchpads */
505 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
506 td->buttons_count++;
507
508 if (usage->usage_index)
509 prev_usage = &field->usage[usage->usage_index - 1];
510
511 switch (usage->hid & HID_USAGE_PAGE) {
512
513 case HID_UP_GENDESK:
514 switch (usage->hid) {
515 case HID_GD_X:
516 if (prev_usage && (prev_usage->hid == usage->hid)) {
517 hid_map_usage(hi, usage, bit, max,
518 EV_ABS, ABS_MT_TOOL_X);
519 set_abs(hi->input, ABS_MT_TOOL_X, field,
520 cls->sn_move);
521 } else {
522 hid_map_usage(hi, usage, bit, max,
523 EV_ABS, ABS_MT_POSITION_X);
524 set_abs(hi->input, ABS_MT_POSITION_X, field,
525 cls->sn_move);
526 }
527
528 mt_store_field(usage, td, hi);
529 return 1;
530 case HID_GD_Y:
531 if (prev_usage && (prev_usage->hid == usage->hid)) {
532 hid_map_usage(hi, usage, bit, max,
533 EV_ABS, ABS_MT_TOOL_Y);
534 set_abs(hi->input, ABS_MT_TOOL_Y, field,
535 cls->sn_move);
536 } else {
537 hid_map_usage(hi, usage, bit, max,
538 EV_ABS, ABS_MT_POSITION_Y);
539 set_abs(hi->input, ABS_MT_POSITION_Y, field,
540 cls->sn_move);
541 }
542
543 mt_store_field(usage, td, hi);
544 return 1;
545 }
546 return 0;
547
548 case HID_UP_DIGITIZER:
549 switch (usage->hid) {
550 case HID_DG_INRANGE:
551 if (cls->quirks & MT_QUIRK_HOVERING) {
552 hid_map_usage(hi, usage, bit, max,
553 EV_ABS, ABS_MT_DISTANCE);
554 input_set_abs_params(hi->input,
555 ABS_MT_DISTANCE, 0, 1, 0, 0);
556 }
557 mt_store_field(usage, td, hi);
558 return 1;
559 case HID_DG_CONFIDENCE:
560 if ((cls->name == MT_CLS_WIN_8 ||
561 cls->name == MT_CLS_WIN_8_DUAL) &&
562 field->application == HID_DG_TOUCHPAD)
563 cls->quirks |= MT_QUIRK_CONFIDENCE;
564 mt_store_field(usage, td, hi);
565 return 1;
566 case HID_DG_TIPSWITCH:
567 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
568 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
569 mt_store_field(usage, td, hi);
570 return 1;
571 case HID_DG_CONTACTID:
572 mt_store_field(usage, td, hi);
573 td->touches_by_report++;
574 td->mt_report_id = field->report->id;
575 return 1;
576 case HID_DG_WIDTH:
577 hid_map_usage(hi, usage, bit, max,
578 EV_ABS, ABS_MT_TOUCH_MAJOR);
579 if (!(cls->quirks & MT_QUIRK_NO_AREA))
580 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
581 cls->sn_width);
582 mt_store_field(usage, td, hi);
583 return 1;
584 case HID_DG_HEIGHT:
585 hid_map_usage(hi, usage, bit, max,
586 EV_ABS, ABS_MT_TOUCH_MINOR);
587 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
588 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
589 cls->sn_height);
590
591 /*
592 * Only set ABS_MT_ORIENTATION if it is not
593 * already set by the HID_DG_AZIMUTH usage.
594 */
595 if (!test_bit(ABS_MT_ORIENTATION,
596 hi->input->absbit))
597 input_set_abs_params(hi->input,
598 ABS_MT_ORIENTATION, 0, 1, 0, 0);
599 }
600 mt_store_field(usage, td, hi);
601 return 1;
602 case HID_DG_TIPPRESSURE:
603 hid_map_usage(hi, usage, bit, max,
604 EV_ABS, ABS_MT_PRESSURE);
605 set_abs(hi->input, ABS_MT_PRESSURE, field,
606 cls->sn_pressure);
607 mt_store_field(usage, td, hi);
608 return 1;
609 case HID_DG_SCANTIME:
610 hid_map_usage(hi, usage, bit, max,
611 EV_MSC, MSC_TIMESTAMP);
612 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
613 mt_store_field(usage, td, hi);
614 /* Ignore if indexes are out of bounds. */
615 if (field->index >= field->report->maxfield ||
616 usage->usage_index >= field->report_count)
617 return 1;
618 td->scantime_index = field->index;
619 td->scantime_val_index = usage->usage_index;
620 return 1;
621 case HID_DG_CONTACTCOUNT:
622 /* Ignore if indexes are out of bounds. */
623 if (field->index >= field->report->maxfield ||
624 usage->usage_index >= field->report_count)
625 return 1;
626 td->cc_index = field->index;
627 td->cc_value_index = usage->usage_index;
628 return 1;
629 case HID_DG_AZIMUTH:
630 hid_map_usage(hi, usage, bit, max,
631 EV_ABS, ABS_MT_ORIENTATION);
632 /*
633 * Azimuth has the range of [0, MAX) representing a full
634 * revolution. Set ABS_MT_ORIENTATION to a quarter of
635 * MAX according the definition of ABS_MT_ORIENTATION
636 */
637 input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
638 -field->logical_maximum / 4,
639 field->logical_maximum / 4,
640 cls->sn_move ?
641 field->logical_maximum / cls->sn_move : 0, 0);
642 mt_store_field(usage, td, hi);
643 return 1;
644 case HID_DG_CONTACTMAX:
645 /* we don't set td->last_slot_field as contactcount and
646 * contact max are global to the report */
647 return -1;
648 case HID_DG_TOUCH:
649 /* Legacy devices use TIPSWITCH and not TOUCH.
650 * Let's just ignore this field. */
651 return -1;
652 }
653 /* let hid-input decide for the others */
654 return 0;
655
656 case HID_UP_BUTTON:
657 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
658 /*
659 * MS PTP spec says that external buttons left and right have
660 * usages 2 and 3.
661 */
662 if ((cls->name == MT_CLS_WIN_8 ||
663 cls->name == MT_CLS_WIN_8_DUAL) &&
664 field->application == HID_DG_TOUCHPAD &&
665 (usage->hid & HID_USAGE) > 1)
666 code--;
667 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
668 input_set_capability(hi->input, EV_KEY, code);
669 return 1;
670
671 case 0xff000000:
672 /* we do not want to map these: no input-oriented meaning */
673 return -1;
674 }
675
676 return 0;
677 }
678
679 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
680 {
681 __s32 quirks = td->mtclass.quirks;
682
683 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
684 return td->curdata.contactid;
685
686 if (quirks & MT_QUIRK_CYPRESS)
687 return cypress_compute_slot(td);
688
689 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
690 return td->num_received;
691
692 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
693 return td->curdata.contactid - 1;
694
695 return input_mt_get_slot_by_key(input, td->curdata.contactid);
696 }
697
698 /*
699 * this function is called when a whole contact has been processed,
700 * so that it can assign it to a slot and store the data there
701 */
702 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
703 {
704 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
705 td->num_received >= td->num_expected)
706 return;
707
708 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
709 int active;
710 int slotnum = mt_compute_slot(td, input);
711 struct mt_slot *s = &td->curdata;
712 struct input_mt *mt = input->mt;
713
714 if (slotnum < 0 || slotnum >= td->maxcontacts)
715 return;
716
717 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
718 struct input_mt_slot *slot = &mt->slots[slotnum];
719 if (input_mt_is_active(slot) &&
720 input_mt_is_used(mt, slot))
721 return;
722 }
723
724 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE))
725 s->confidence_state = 1;
726 active = (s->touch_state || s->inrange_state) &&
727 s->confidence_state;
728
729 input_mt_slot(input, slotnum);
730 input_mt_report_slot_state(input, MT_TOOL_FINGER, active);
731 if (active) {
732 /* this finger is in proximity of the sensor */
733 int wide = (s->w > s->h);
734 int major = max(s->w, s->h);
735 int minor = min(s->w, s->h);
736 int orientation = wide;
737
738 if (s->has_azimuth)
739 orientation = s->a;
740
741 /*
742 * divided by two to match visual scale of touch
743 * for devices with this quirk
744 */
745 if (td->mtclass.quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
746 major = major >> 1;
747 minor = minor >> 1;
748 }
749
750 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
751 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
752 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
753 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
754 input_event(input, EV_ABS, ABS_MT_DISTANCE,
755 !s->touch_state);
756 input_event(input, EV_ABS, ABS_MT_ORIENTATION,
757 orientation);
758 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
759 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
760 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
761
762 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
763 }
764 }
765
766 td->num_received++;
767 }
768
769 /*
770 * this function is called when a whole packet has been received and processed,
771 * so that it can decide what to send to the input layer.
772 */
773 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
774 {
775 __s32 cls = td->mtclass.name;
776
777 if (cls == MT_CLS_WIN_8 || cls == MT_CLS_WIN_8_DUAL)
778 input_event(input, EV_KEY, BTN_LEFT, td->left_button_state);
779
780 input_mt_sync_frame(input);
781 input_event(input, EV_MSC, MSC_TIMESTAMP, td->timestamp);
782 input_sync(input);
783 td->num_received = 0;
784 td->left_button_state = 0;
785 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
786 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
787 else
788 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
789 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
790 }
791
792 static int mt_compute_timestamp(struct mt_device *td, struct hid_field *field,
793 __s32 value)
794 {
795 long delta = value - td->dev_time;
796 unsigned long jdelta = jiffies_to_usecs(jiffies - td->jiffies);
797
798 td->jiffies = jiffies;
799 td->dev_time = value;
800
801 if (delta < 0)
802 delta += field->logical_maximum;
803
804 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
805 delta *= 100;
806
807 if (jdelta > MAX_TIMESTAMP_INTERVAL)
808 /* No data received for a while, resync the timestamp. */
809 return 0;
810 else
811 return td->timestamp + delta;
812 }
813
814 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
815 struct hid_usage *usage, __s32 value)
816 {
817 /* we will handle the hidinput part later, now remains hiddev */
818 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
819 hid->hiddev_hid_event(hid, field, usage, value);
820
821 return 1;
822 }
823
824 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
825 struct hid_usage *usage, __s32 value,
826 bool first_packet)
827 {
828 struct mt_device *td = hid_get_drvdata(hid);
829 __s32 cls = td->mtclass.name;
830 __s32 quirks = td->mtclass.quirks;
831 struct input_dev *input = field->hidinput->input;
832
833 if (hid->claimed & HID_CLAIMED_INPUT) {
834 switch (usage->hid) {
835 case HID_DG_INRANGE:
836 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
837 td->curvalid = value;
838 if (quirks & MT_QUIRK_HOVERING)
839 td->curdata.inrange_state = value;
840 break;
841 case HID_DG_TIPSWITCH:
842 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
843 td->curvalid = value;
844 td->curdata.touch_state = value;
845 break;
846 case HID_DG_CONFIDENCE:
847 if (quirks & MT_QUIRK_CONFIDENCE)
848 td->curdata.confidence_state = value;
849 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
850 td->curvalid = value;
851 break;
852 case HID_DG_CONTACTID:
853 td->curdata.contactid = value;
854 break;
855 case HID_DG_TIPPRESSURE:
856 td->curdata.p = value;
857 break;
858 case HID_GD_X:
859 if (usage->code == ABS_MT_TOOL_X)
860 td->curdata.cx = value;
861 else
862 td->curdata.x = value;
863 break;
864 case HID_GD_Y:
865 if (usage->code == ABS_MT_TOOL_Y)
866 td->curdata.cy = value;
867 else
868 td->curdata.y = value;
869 break;
870 case HID_DG_WIDTH:
871 td->curdata.w = value;
872 break;
873 case HID_DG_HEIGHT:
874 td->curdata.h = value;
875 break;
876 case HID_DG_SCANTIME:
877 td->timestamp = mt_compute_timestamp(td, field, value);
878 break;
879 case HID_DG_CONTACTCOUNT:
880 break;
881 case HID_DG_AZIMUTH:
882 /*
883 * Azimuth is counter-clockwise and ranges from [0, MAX)
884 * (a full revolution). Convert it to clockwise ranging
885 * [-MAX/2, MAX/2].
886 *
887 * Note that ABS_MT_ORIENTATION require us to report
888 * the limit of [-MAX/4, MAX/4], but the value can go
889 * out of range to [-MAX/2, MAX/2] to report an upside
890 * down ellipsis.
891 */
892 if (value > field->logical_maximum / 2)
893 value -= field->logical_maximum;
894 td->curdata.a = -value;
895 td->curdata.has_azimuth = true;
896 break;
897 case HID_DG_TOUCH:
898 /* do nothing */
899 break;
900
901 default:
902 /*
903 * For Win8 PTP touchpads we should only look at
904 * non finger/touch events in the first_packet of
905 * a (possible) multi-packet frame.
906 */
907 if ((cls == MT_CLS_WIN_8 || cls == MT_CLS_WIN_8_DUAL) &&
908 !first_packet)
909 return;
910
911 /*
912 * For Win8 PTP touchpads we map both the clickpad click
913 * and any "external" left buttons to BTN_LEFT if a
914 * device claims to have both we need to report 1 for
915 * BTN_LEFT if either is pressed, so we or all values
916 * together and report the result in mt_sync_frame().
917 */
918 if ((cls == MT_CLS_WIN_8 || cls == MT_CLS_WIN_8_DUAL) &&
919 usage->type == EV_KEY && usage->code == BTN_LEFT) {
920 td->left_button_state |= value;
921 return;
922 }
923
924 if (usage->type)
925 input_event(input, usage->type, usage->code,
926 value);
927 return;
928 }
929
930 if (usage->usage_index + 1 == field->report_count) {
931 /* we only take into account the last report. */
932 if (usage->hid == td->last_slot_field)
933 mt_complete_slot(td, field->hidinput->input);
934 }
935
936 }
937 }
938
939 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
940 {
941 struct mt_device *td = hid_get_drvdata(hid);
942 __s32 cls = td->mtclass.name;
943 struct hid_field *field;
944 bool first_packet;
945 unsigned count;
946 int r, n, scantime = 0;
947
948 /* sticky fingers release in progress, abort */
949 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
950 return;
951
952 /*
953 * Includes multi-packet support where subsequent
954 * packets are sent with zero contactcount.
955 */
956 if (td->scantime_index >= 0) {
957 field = report->field[td->scantime_index];
958 scantime = field->value[td->scantime_val_index];
959 }
960 if (td->cc_index >= 0) {
961 struct hid_field *field = report->field[td->cc_index];
962 int value = field->value[td->cc_value_index];
963
964 /*
965 * For Win8 PTPs the first packet (td->num_received == 0) may
966 * have a contactcount of 0 if there only is a button event.
967 * We double check that this is not a continuation packet
968 * of a possible multi-packet frame be checking that the
969 * timestamp has changed.
970 */
971 if ((cls == MT_CLS_WIN_8 || cls == MT_CLS_WIN_8_DUAL) &&
972 td->num_received == 0 && td->prev_scantime != scantime)
973 td->num_expected = value;
974 /* A non 0 contact count always indicates a first packet */
975 else if (value)
976 td->num_expected = value;
977 }
978 td->prev_scantime = scantime;
979
980 first_packet = td->num_received == 0;
981 for (r = 0; r < report->maxfield; r++) {
982 field = report->field[r];
983 count = field->report_count;
984
985 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
986 continue;
987
988 for (n = 0; n < count; n++)
989 mt_process_mt_event(hid, field, &field->usage[n],
990 field->value[n], first_packet);
991 }
992
993 if (td->num_received >= td->num_expected)
994 mt_sync_frame(td, report->field[0]->hidinput->input);
995
996 /*
997 * Windows 8 specs says 2 things:
998 * - once a contact has been reported, it has to be reported in each
999 * subsequent report
1000 * - the report rate when fingers are present has to be at least
1001 * the refresh rate of the screen, 60 or 120 Hz
1002 *
1003 * I interprete this that the specification forces a report rate of
1004 * at least 60 Hz for a touchscreen to be certified.
1005 * Which means that if we do not get a report whithin 16 ms, either
1006 * something wrong happens, either the touchscreen forgets to send
1007 * a release. Taking a reasonable margin allows to remove issues
1008 * with USB communication or the load of the machine.
1009 *
1010 * Given that Win 8 devices are forced to send a release, this will
1011 * only affect laggish machines and the ones that have a firmware
1012 * defect.
1013 */
1014 if (td->mtclass.quirks & MT_QUIRK_STICKY_FINGERS) {
1015 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1016 mod_timer(&td->release_timer,
1017 jiffies + msecs_to_jiffies(100));
1018 else
1019 del_timer(&td->release_timer);
1020 }
1021
1022 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1023 }
1024
1025 static int mt_touch_input_configured(struct hid_device *hdev,
1026 struct hid_input *hi)
1027 {
1028 struct mt_device *td = hid_get_drvdata(hdev);
1029 struct mt_class *cls = &td->mtclass;
1030 struct input_dev *input = hi->input;
1031 int ret;
1032
1033 if (!td->maxcontacts)
1034 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
1035
1036 mt_post_parse(td);
1037 if (td->serial_maybe)
1038 mt_post_parse_default_settings(td);
1039
1040 if (cls->is_indirect)
1041 td->mt_flags |= INPUT_MT_POINTER;
1042
1043 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
1044 td->mt_flags |= INPUT_MT_DROP_UNUSED;
1045
1046 /* check for clickpads */
1047 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
1048 td->is_buttonpad = true;
1049
1050 if (td->is_buttonpad)
1051 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
1052
1053 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
1054 if (ret)
1055 return ret;
1056
1057 td->mt_flags = 0;
1058 return 0;
1059 }
1060
1061 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
1062 max, EV_KEY, (c))
1063 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
1064 struct hid_field *field, struct hid_usage *usage,
1065 unsigned long **bit, int *max)
1066 {
1067 struct mt_device *td = hid_get_drvdata(hdev);
1068
1069 /*
1070 * If mtclass.export_all_inputs is not set, only map fields from
1071 * TouchScreen or TouchPad collections. We need to ignore fields
1072 * that belong to other collections such as Mouse that might have
1073 * the same GenericDesktop usages.
1074 */
1075 if (!td->mtclass.export_all_inputs &&
1076 field->application != HID_DG_TOUCHSCREEN &&
1077 field->application != HID_DG_PEN &&
1078 field->application != HID_DG_TOUCHPAD &&
1079 field->application != HID_GD_KEYBOARD &&
1080 field->application != HID_GD_SYSTEM_CONTROL &&
1081 field->application != HID_CP_CONSUMER_CONTROL &&
1082 field->application != HID_GD_WIRELESS_RADIO_CTLS &&
1083 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1084 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP))
1085 return -1;
1086
1087 /*
1088 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
1089 * touchpad report descriptor. We need to treat these as an array to
1090 * map usages to input keys.
1091 */
1092 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1093 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
1094 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
1095 set_bit(EV_REP, hi->input->evbit);
1096 if (field->flags & HID_MAIN_ITEM_VARIABLE)
1097 field->flags &= ~HID_MAIN_ITEM_VARIABLE;
1098 switch (usage->hid & HID_USAGE) {
1099 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break;
1100 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break;
1101 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break;
1102 case 0x6b: mt_map_key_clear(KEY_F21); break;
1103 case 0x6c: mt_map_key_clear(KEY_SLEEP); break;
1104 default:
1105 return -1;
1106 }
1107 return 1;
1108 }
1109
1110 /*
1111 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1112 * for the stylus.
1113 * The check for mt_report_id ensures we don't process
1114 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
1115 * collection, but within the report ID.
1116 */
1117 if (field->physical == HID_DG_STYLUS)
1118 return 0;
1119 else if ((field->physical == 0) &&
1120 (field->report->id != td->mt_report_id) &&
1121 (td->mt_report_id != -1))
1122 return 0;
1123
1124 if (field->application == HID_DG_TOUCHSCREEN ||
1125 field->application == HID_DG_TOUCHPAD)
1126 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
1127
1128 /* let hid-core decide for the others */
1129 return 0;
1130 }
1131
1132 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
1133 struct hid_field *field, struct hid_usage *usage,
1134 unsigned long **bit, int *max)
1135 {
1136 /*
1137 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1138 * for the stylus.
1139 */
1140 if (field->physical == HID_DG_STYLUS)
1141 return 0;
1142
1143 if (field->application == HID_DG_TOUCHSCREEN ||
1144 field->application == HID_DG_TOUCHPAD) {
1145 /* We own these mappings, tell hid-input to ignore them */
1146 return -1;
1147 }
1148
1149 /* let hid-core decide for the others */
1150 return 0;
1151 }
1152
1153 static int mt_event(struct hid_device *hid, struct hid_field *field,
1154 struct hid_usage *usage, __s32 value)
1155 {
1156 struct mt_device *td = hid_get_drvdata(hid);
1157
1158 if (field->report->id == td->mt_report_id)
1159 return mt_touch_event(hid, field, usage, value);
1160
1161 return 0;
1162 }
1163
1164 static void mt_report(struct hid_device *hid, struct hid_report *report)
1165 {
1166 struct mt_device *td = hid_get_drvdata(hid);
1167 struct hid_field *field = report->field[0];
1168
1169 if (!(hid->claimed & HID_CLAIMED_INPUT))
1170 return;
1171
1172 if (report->id == td->mt_report_id)
1173 return mt_touch_report(hid, report);
1174
1175 if (field && field->hidinput && field->hidinput->input)
1176 input_sync(field->hidinput->input);
1177 }
1178
1179 static void mt_set_input_mode(struct hid_device *hdev)
1180 {
1181 struct mt_device *td = hid_get_drvdata(hdev);
1182 struct hid_report *r;
1183 struct hid_report_enum *re;
1184 struct mt_class *cls = &td->mtclass;
1185 char *buf;
1186 int report_len;
1187
1188 if (td->inputmode < 0)
1189 return;
1190
1191 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
1192 r = re->report_id_hash[td->inputmode];
1193 if (r) {
1194 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1195 report_len = hid_report_len(r);
1196 buf = hid_alloc_report_buf(r, GFP_KERNEL);
1197 if (!buf) {
1198 hid_err(hdev, "failed to allocate buffer for report\n");
1199 return;
1200 }
1201 hid_hw_raw_request(hdev, r->id, buf, report_len,
1202 HID_FEATURE_REPORT,
1203 HID_REQ_GET_REPORT);
1204 kfree(buf);
1205 }
1206 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
1207 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
1208 }
1209 }
1210
1211 static void mt_set_maxcontacts(struct hid_device *hdev)
1212 {
1213 struct mt_device *td = hid_get_drvdata(hdev);
1214 struct hid_report *r;
1215 struct hid_report_enum *re;
1216 int fieldmax, max;
1217
1218 if (td->maxcontact_report_id < 0)
1219 return;
1220
1221 if (!td->mtclass.maxcontacts)
1222 return;
1223
1224 re = &hdev->report_enum[HID_FEATURE_REPORT];
1225 r = re->report_id_hash[td->maxcontact_report_id];
1226 if (r) {
1227 max = td->mtclass.maxcontacts;
1228 fieldmax = r->field[0]->logical_maximum;
1229 max = min(fieldmax, max);
1230 if (r->field[0]->value[0] != max) {
1231 r->field[0]->value[0] = max;
1232 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
1233 }
1234 }
1235 }
1236
1237 static void mt_post_parse_default_settings(struct mt_device *td)
1238 {
1239 __s32 quirks = td->mtclass.quirks;
1240
1241 /* unknown serial device needs special quirks */
1242 if (td->touches_by_report == 1) {
1243 quirks |= MT_QUIRK_ALWAYS_VALID;
1244 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1245 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1246 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1247 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1248 }
1249
1250 td->mtclass.quirks = quirks;
1251 }
1252
1253 static void mt_post_parse(struct mt_device *td)
1254 {
1255 struct mt_fields *f = td->fields;
1256 struct mt_class *cls = &td->mtclass;
1257
1258 if (td->touches_by_report > 0) {
1259 int field_count_per_touch = f->length / td->touches_by_report;
1260 td->last_slot_field = f->usages[field_count_per_touch - 1];
1261 }
1262
1263 if (td->cc_index < 0)
1264 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1265 }
1266
1267 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1268 {
1269 struct mt_device *td = hid_get_drvdata(hdev);
1270 char *name;
1271 const char *suffix = NULL;
1272 struct hid_field *field = hi->report->field[0];
1273 int ret;
1274
1275 if (hi->report->id == td->mt_report_id) {
1276 ret = mt_touch_input_configured(hdev, hi);
1277 if (ret)
1278 return ret;
1279 }
1280
1281 /*
1282 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1283 * for the stylus. Check this first, and then rely on the application
1284 * field.
1285 */
1286 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
1287 suffix = "Pen";
1288 /* force BTN_STYLUS to allow tablet matching in udev */
1289 __set_bit(BTN_STYLUS, hi->input->keybit);
1290 } else {
1291 switch (field->application) {
1292 case HID_GD_KEYBOARD:
1293 suffix = "Keyboard";
1294 break;
1295 case HID_GD_KEYPAD:
1296 suffix = "Keypad";
1297 break;
1298 case HID_GD_MOUSE:
1299 suffix = "Mouse";
1300 break;
1301 case HID_DG_STYLUS:
1302 suffix = "Pen";
1303 /* force BTN_STYLUS to allow tablet matching in udev */
1304 __set_bit(BTN_STYLUS, hi->input->keybit);
1305 break;
1306 case HID_DG_TOUCHSCREEN:
1307 /* we do not set suffix = "Touchscreen" */
1308 break;
1309 case HID_DG_TOUCHPAD:
1310 suffix = "Touchpad";
1311 break;
1312 case HID_GD_SYSTEM_CONTROL:
1313 suffix = "System Control";
1314 break;
1315 case HID_CP_CONSUMER_CONTROL:
1316 suffix = "Consumer Control";
1317 break;
1318 case HID_GD_WIRELESS_RADIO_CTLS:
1319 suffix = "Wireless Radio Control";
1320 break;
1321 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1322 suffix = "Custom Media Keys";
1323 break;
1324 default:
1325 suffix = "UNKNOWN";
1326 break;
1327 }
1328 }
1329
1330 if (suffix) {
1331 name = devm_kzalloc(&hi->input->dev,
1332 strlen(hdev->name) + strlen(suffix) + 2,
1333 GFP_KERNEL);
1334 if (name) {
1335 sprintf(name, "%s %s", hdev->name, suffix);
1336 hi->input->name = name;
1337 }
1338 }
1339
1340 return 0;
1341 }
1342
1343 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1344 {
1345 if (field->usage[0].hid != usage ||
1346 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1347 return;
1348
1349 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1350 field->flags |= HID_MAIN_ITEM_VARIABLE;
1351 }
1352
1353 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1354 {
1355 struct hid_report *report;
1356 int i;
1357
1358 list_for_each_entry(report,
1359 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1360 list) {
1361
1362 if (!report->maxfield)
1363 continue;
1364
1365 for (i = 0; i < report->maxfield; i++)
1366 if (report->field[i]->maxusage >= 1)
1367 mt_fix_const_field(report->field[i], usage);
1368 }
1369 }
1370
1371 static void mt_release_contacts(struct hid_device *hid)
1372 {
1373 struct hid_input *hidinput;
1374 struct mt_device *td = hid_get_drvdata(hid);
1375
1376 list_for_each_entry(hidinput, &hid->inputs, list) {
1377 struct input_dev *input_dev = hidinput->input;
1378 struct input_mt *mt = input_dev->mt;
1379 int i;
1380
1381 if (mt) {
1382 for (i = 0; i < mt->num_slots; i++) {
1383 input_mt_slot(input_dev, i);
1384 input_mt_report_slot_state(input_dev,
1385 MT_TOOL_FINGER,
1386 false);
1387 }
1388 input_mt_sync_frame(input_dev);
1389 input_sync(input_dev);
1390 }
1391 }
1392
1393 td->num_received = 0;
1394 }
1395
1396 static void mt_expired_timeout(struct timer_list *t)
1397 {
1398 struct mt_device *td = from_timer(td, t, release_timer);
1399 struct hid_device *hdev = td->hdev;
1400
1401 /*
1402 * An input report came in just before we release the sticky fingers,
1403 * it will take care of the sticky fingers.
1404 */
1405 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1406 return;
1407 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1408 mt_release_contacts(hdev);
1409 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1410 }
1411
1412 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1413 {
1414 int ret, i;
1415 struct mt_device *td;
1416 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1417
1418 for (i = 0; mt_classes[i].name ; i++) {
1419 if (id->driver_data == mt_classes[i].name) {
1420 mtclass = &(mt_classes[i]);
1421 break;
1422 }
1423 }
1424
1425 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1426 if (!td) {
1427 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1428 return -ENOMEM;
1429 }
1430 td->hdev = hdev;
1431 td->mtclass = *mtclass;
1432 td->inputmode = -1;
1433 td->maxcontact_report_id = -1;
1434 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1435 td->cc_index = -1;
1436 td->scantime_index = -1;
1437 td->mt_report_id = -1;
1438 hid_set_drvdata(hdev, td);
1439
1440 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1441 GFP_KERNEL);
1442 if (!td->fields) {
1443 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
1444 return -ENOMEM;
1445 }
1446
1447 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1448 td->serial_maybe = true;
1449
1450 /*
1451 * Store the initial quirk state
1452 */
1453 td->initial_quirks = hdev->quirks;
1454
1455 /* This allows the driver to correctly support devices
1456 * that emit events over several HID messages.
1457 */
1458 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1459
1460 /*
1461 * This allows the driver to handle different input sensors
1462 * that emits events through different reports on the same HID
1463 * device.
1464 */
1465 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1466 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1467
1468 /*
1469 * Some multitouch screens do not like to be polled for input
1470 * reports. Fortunately, the Win8 spec says that all touches
1471 * should be sent during each report, making the initialization
1472 * of input reports unnecessary. For Win7 devices, well, let's hope
1473 * they will still be happy (this is only be a problem if a touch
1474 * was already there while probing the device).
1475 *
1476 * In addition some touchpads do not behave well if we read
1477 * all feature reports from them. Instead we prevent
1478 * initial report fetching and then selectively fetch each
1479 * report we are interested in.
1480 */
1481 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1482
1483 timer_setup(&td->release_timer, mt_expired_timeout, 0);
1484
1485 ret = hid_parse(hdev);
1486 if (ret != 0)
1487 return ret;
1488
1489 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1490 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1491
1492 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1493 if (ret)
1494 return ret;
1495
1496 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1497 if (ret)
1498 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1499 hdev->name);
1500
1501 mt_set_maxcontacts(hdev);
1502 mt_set_input_mode(hdev);
1503
1504 /* release .fields memory as it is not used anymore */
1505 devm_kfree(&hdev->dev, td->fields);
1506 td->fields = NULL;
1507
1508 return 0;
1509 }
1510
1511 #ifdef CONFIG_PM
1512 static int mt_reset_resume(struct hid_device *hdev)
1513 {
1514 mt_release_contacts(hdev);
1515 mt_set_maxcontacts(hdev);
1516 mt_set_input_mode(hdev);
1517 return 0;
1518 }
1519
1520 static int mt_resume(struct hid_device *hdev)
1521 {
1522 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1523 * It should be safe to send it to other devices too.
1524 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1525
1526 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1527
1528 return 0;
1529 }
1530 #endif
1531
1532 static void mt_remove(struct hid_device *hdev)
1533 {
1534 struct mt_device *td = hid_get_drvdata(hdev);
1535
1536 del_timer_sync(&td->release_timer);
1537
1538 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1539 hid_hw_stop(hdev);
1540 hdev->quirks = td->initial_quirks;
1541 }
1542
1543 /*
1544 * This list contains only:
1545 * - VID/PID of products not working with the default multitouch handling
1546 * - 2 generic rules.
1547 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1548 */
1549 static const struct hid_device_id mt_devices[] = {
1550
1551 /* 3M panels */
1552 { .driver_data = MT_CLS_3M,
1553 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1554 USB_DEVICE_ID_3M1968) },
1555 { .driver_data = MT_CLS_3M,
1556 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1557 USB_DEVICE_ID_3M2256) },
1558 { .driver_data = MT_CLS_3M,
1559 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1560 USB_DEVICE_ID_3M3266) },
1561
1562 /* Alps devices */
1563 { .driver_data = MT_CLS_WIN_8_DUAL,
1564 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1565 USB_VENDOR_ID_ALPS_JP,
1566 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) },
1567 { .driver_data = MT_CLS_WIN_8_DUAL,
1568 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1569 USB_VENDOR_ID_ALPS_JP,
1570 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) },
1571
1572 /* Lenovo X1 TAB Gen 2 */
1573 { .driver_data = MT_CLS_WIN_8_DUAL,
1574 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1575 USB_VENDOR_ID_LENOVO,
1576 USB_DEVICE_ID_LENOVO_X1_TAB) },
1577
1578 /* Anton devices */
1579 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1580 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1581 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1582
1583 /* Asus T304UA */
1584 { .driver_data = MT_CLS_ASUS,
1585 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1586 USB_VENDOR_ID_ASUSTEK,
1587 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
1588
1589 /* Atmel panels */
1590 { .driver_data = MT_CLS_SERIAL,
1591 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1592 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1593
1594 /* Baanto multitouch devices */
1595 { .driver_data = MT_CLS_NSMU,
1596 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1597 USB_DEVICE_ID_BAANTO_MT_190W2) },
1598
1599 /* Cando panels */
1600 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1601 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1602 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1603 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1604 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1605 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1606
1607 /* Chunghwa Telecom touch panels */
1608 { .driver_data = MT_CLS_NSMU,
1609 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1610 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1611
1612 /* CJTouch panels */
1613 { .driver_data = MT_CLS_NSMU,
1614 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1615 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1616 { .driver_data = MT_CLS_NSMU,
1617 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1618 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1619
1620 /* CVTouch panels */
1621 { .driver_data = MT_CLS_NSMU,
1622 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1623 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1624
1625 /* eGalax devices (resistive) */
1626 { .driver_data = MT_CLS_EGALAX,
1627 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1628 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1629 { .driver_data = MT_CLS_EGALAX,
1630 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1631 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1632
1633 /* eGalax devices (capacitive) */
1634 { .driver_data = MT_CLS_EGALAX_SERIAL,
1635 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1636 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1637 { .driver_data = MT_CLS_EGALAX,
1638 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1639 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1640 { .driver_data = MT_CLS_EGALAX_SERIAL,
1641 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1642 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1643 { .driver_data = MT_CLS_EGALAX_SERIAL,
1644 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1645 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1646 { .driver_data = MT_CLS_EGALAX_SERIAL,
1647 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1648 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1649 { .driver_data = MT_CLS_EGALAX_SERIAL,
1650 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1651 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1652 { .driver_data = MT_CLS_EGALAX,
1653 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1654 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1655 { .driver_data = MT_CLS_EGALAX,
1656 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1657 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1658 { .driver_data = MT_CLS_EGALAX_SERIAL,
1659 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1660 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1661 { .driver_data = MT_CLS_EGALAX,
1662 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1663 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1664 { .driver_data = MT_CLS_EGALAX,
1665 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1666 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1667 { .driver_data = MT_CLS_EGALAX,
1668 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1669 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1670 { .driver_data = MT_CLS_EGALAX,
1671 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1672 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1673 { .driver_data = MT_CLS_EGALAX_SERIAL,
1674 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1675 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1676 { .driver_data = MT_CLS_EGALAX_SERIAL,
1677 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1678 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1679 { .driver_data = MT_CLS_EGALAX_SERIAL,
1680 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1681 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1682
1683 /* Elitegroup panel */
1684 { .driver_data = MT_CLS_SERIAL,
1685 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1686 USB_DEVICE_ID_ELITEGROUP_05D8) },
1687
1688 /* Flatfrog Panels */
1689 { .driver_data = MT_CLS_FLATFROG,
1690 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1691 USB_DEVICE_ID_MULTITOUCH_3200) },
1692
1693 /* FocalTech Panels */
1694 { .driver_data = MT_CLS_SERIAL,
1695 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1696 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1697
1698 /* GeneralTouch panel */
1699 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1700 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1701 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1702 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1703 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1704 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1705 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1706 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1707 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1708 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1709 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1710 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1711 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1712 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1713 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1714 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1715 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1716 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1717 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1718 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1719 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1720
1721 /* Gametel game controller */
1722 { .driver_data = MT_CLS_NSMU,
1723 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1724 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1725
1726 /* GoodTouch panels */
1727 { .driver_data = MT_CLS_NSMU,
1728 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1729 USB_DEVICE_ID_GOODTOUCH_000f) },
1730
1731 /* Hanvon panels */
1732 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1733 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1734 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1735
1736 /* Ilitek dual touch panel */
1737 { .driver_data = MT_CLS_NSMU,
1738 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1739 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1740
1741 /* LG Melfas panel */
1742 { .driver_data = MT_CLS_LG,
1743 HID_USB_DEVICE(USB_VENDOR_ID_LG,
1744 USB_DEVICE_ID_LG_MELFAS_MT) },
1745
1746 /* MosArt panels */
1747 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1748 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1749 USB_DEVICE_ID_ASUS_T91MT)},
1750 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1751 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1752 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1753 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1754 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1755 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1756
1757 /* Novatek Panel */
1758 { .driver_data = MT_CLS_NSMU,
1759 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1760 USB_DEVICE_ID_NOVATEK_PCT) },
1761
1762 /* Ntrig Panel */
1763 { .driver_data = MT_CLS_NSMU,
1764 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1765 USB_VENDOR_ID_NTRIG, 0x1b05) },
1766
1767 /* Panasonic panels */
1768 { .driver_data = MT_CLS_PANASONIC,
1769 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1770 USB_DEVICE_ID_PANABOARD_UBT780) },
1771 { .driver_data = MT_CLS_PANASONIC,
1772 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1773 USB_DEVICE_ID_PANABOARD_UBT880) },
1774
1775 /* PixArt optical touch screen */
1776 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1777 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1778 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1779 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1780 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1781 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1782 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1783 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1784 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1785
1786 /* PixCir-based panels */
1787 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1788 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1789 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1790
1791 /* Quanta-based panels */
1792 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1793 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1794 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1795
1796 /* Stantum panels */
1797 { .driver_data = MT_CLS_CONFIDENCE,
1798 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1799 USB_DEVICE_ID_MTP_STM)},
1800
1801 /* TopSeed panels */
1802 { .driver_data = MT_CLS_TOPSEED,
1803 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1804 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1805
1806 /* Touch International panels */
1807 { .driver_data = MT_CLS_NSMU,
1808 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1809 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1810
1811 /* Unitec panels */
1812 { .driver_data = MT_CLS_NSMU,
1813 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1814 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1815 { .driver_data = MT_CLS_NSMU,
1816 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1817 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1818
1819 /* VTL panels */
1820 { .driver_data = MT_CLS_VTL,
1821 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1822 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1823
1824 /* Wistron panels */
1825 { .driver_data = MT_CLS_NSMU,
1826 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1827 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1828
1829 /* XAT */
1830 { .driver_data = MT_CLS_NSMU,
1831 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1832 USB_DEVICE_ID_XAT_CSR) },
1833
1834 /* Xiroku */
1835 { .driver_data = MT_CLS_NSMU,
1836 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1837 USB_DEVICE_ID_XIROKU_SPX) },
1838 { .driver_data = MT_CLS_NSMU,
1839 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1840 USB_DEVICE_ID_XIROKU_MPX) },
1841 { .driver_data = MT_CLS_NSMU,
1842 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1843 USB_DEVICE_ID_XIROKU_CSR) },
1844 { .driver_data = MT_CLS_NSMU,
1845 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1846 USB_DEVICE_ID_XIROKU_SPX1) },
1847 { .driver_data = MT_CLS_NSMU,
1848 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1849 USB_DEVICE_ID_XIROKU_MPX1) },
1850 { .driver_data = MT_CLS_NSMU,
1851 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1852 USB_DEVICE_ID_XIROKU_CSR1) },
1853 { .driver_data = MT_CLS_NSMU,
1854 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1855 USB_DEVICE_ID_XIROKU_SPX2) },
1856 { .driver_data = MT_CLS_NSMU,
1857 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1858 USB_DEVICE_ID_XIROKU_MPX2) },
1859 { .driver_data = MT_CLS_NSMU,
1860 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1861 USB_DEVICE_ID_XIROKU_CSR2) },
1862
1863 /* Google MT devices */
1864 { .driver_data = MT_CLS_GOOGLE,
1865 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
1866 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
1867
1868 /* Generic MT device */
1869 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1870
1871 /* Generic Win 8 certified MT device */
1872 { .driver_data = MT_CLS_WIN_8,
1873 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1874 HID_ANY_ID, HID_ANY_ID) },
1875 { }
1876 };
1877 MODULE_DEVICE_TABLE(hid, mt_devices);
1878
1879 static const struct hid_usage_id mt_grabbed_usages[] = {
1880 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1881 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1882 };
1883
1884 static struct hid_driver mt_driver = {
1885 .name = "hid-multitouch",
1886 .id_table = mt_devices,
1887 .probe = mt_probe,
1888 .remove = mt_remove,
1889 .input_mapping = mt_input_mapping,
1890 .input_mapped = mt_input_mapped,
1891 .input_configured = mt_input_configured,
1892 .feature_mapping = mt_feature_mapping,
1893 .usage_table = mt_grabbed_usages,
1894 .event = mt_event,
1895 .report = mt_report,
1896 #ifdef CONFIG_PM
1897 .reset_resume = mt_reset_resume,
1898 .resume = mt_resume,
1899 #endif
1900 };
1901 module_hid_driver(mt_driver);
CRIS linux kernel tree