1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * HID driver for multitouch panels
4 *
5 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
6 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
7 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
8 * Copyright (c) 2012-2013 Red Hat, Inc
9 *
10 * This code is partly based on hid-egalax.c:
11 *
12 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
13 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
14 * Copyright (c) 2010 Canonical, Ltd.
15 *
16 * This code is partly based on hid-3m-pct.c:
17 *
18 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
19 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
20 * Copyright (c) 2010 Canonical, Ltd.
21 */
22
23 /*
24 */
25
26 /*
27 * This driver is regularly tested thanks to the test suite in hid-tools[1].
28 * Please run these regression tests before patching this module so that
29 * your patch won't break existing known devices.
30 *
31 * [1] https://gitlab.freedesktop.org/libevdev/hid-tools
32 */
33
34 #include <linux/bits.h>
35 #include <linux/device.h>
36 #include <linux/hid.h>
37 #include <linux/module.h>
38 #include <linux/slab.h>
39 #include <linux/input/mt.h>
40 #include <linux/jiffies.h>
41 #include <linux/string.h>
42 #include <linux/timer.h>
43
44
45 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
46 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
47 MODULE_DESCRIPTION("HID multitouch panels");
48 MODULE_LICENSE("GPL");
49
50 #include "hid-ids.h"
51
52 /* quirks to control the device */
53 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0)
54 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1)
55 #define MT_QUIRK_CYPRESS BIT(2)
56 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3)
57 #define MT_QUIRK_ALWAYS_VALID BIT(4)
58 #define MT_QUIRK_VALID_IS_INRANGE BIT(5)
59 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6)
60 #define MT_QUIRK_CONFIDENCE BIT(7)
61 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8)
62 #define MT_QUIRK_NO_AREA BIT(9)
63 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10)
64 #define MT_QUIRK_HOVERING BIT(11)
65 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12)
66 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13)
67 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14)
68 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15)
69 #define MT_QUIRK_STICKY_FINGERS BIT(16)
70 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17)
71 #define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18)
72 #define MT_QUIRK_SEPARATE_APP_REPORT BIT(19)
73 #define MT_QUIRK_FORCE_MULTI_INPUT BIT(20)
74 #define MT_QUIRK_DISABLE_WAKEUP BIT(21)
75 #define MT_QUIRK_ORIENTATION_INVERT BIT(22)
76
77 #define MT_INPUTMODE_TOUCHSCREEN 0x02
78 #define MT_INPUTMODE_TOUCHPAD 0x03
79
80 #define MT_BUTTONTYPE_CLICKPAD 0
81
82 enum latency_mode {
83 HID_LATENCY_NORMAL = 0,
84 HID_LATENCY_HIGH = 1,
85 };
86
87 enum report_mode {
88 TOUCHPAD_REPORT_NONE = 0,
89 TOUCHPAD_REPORT_BUTTONS = BIT(0),
90 TOUCHPAD_REPORT_CONTACTS = BIT(1),
91 TOUCHPAD_REPORT_ALL = TOUCHPAD_REPORT_BUTTONS | TOUCHPAD_REPORT_CONTACTS,
92 };
93
94 #define MT_IO_FLAGS_RUNNING 0
95 #define MT_IO_FLAGS_ACTIVE_SLOTS 1
96 #define MT_IO_FLAGS_PENDING_SLOTS 2
97
98 static const bool mtrue = true; /* default for true */
99 static const bool mfalse; /* default for false */
100 static const __s32 mzero; /* default for 0 */
101
102 #define DEFAULT_TRUE ((void *)&mtrue)
103 #define DEFAULT_FALSE ((void *)&mfalse)
104 #define DEFAULT_ZERO ((void *)&mzero)
105
106 struct mt_usages {
107 struct list_head list;
108 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a;
109 __s32 *contactid; /* the device ContactID assigned to this slot */
110 bool *tip_state; /* is the touch valid? */
111 bool *inrange_state; /* is the finger in proximity of the sensor? */
112 bool *confidence_state; /* is the touch made by a finger? */
113 };
114
115 struct mt_application {
116 struct list_head list;
117 unsigned int application;
118 unsigned int report_id;
119 struct list_head mt_usages; /* mt usages list */
120
121 __s32 quirks;
122
123 __s32 *scantime; /* scantime reported */
124 __s32 scantime_logical_max; /* max value for raw scantime */
125
126 __s32 *raw_cc; /* contact count in the report */
127 int left_button_state; /* left button state */
128 unsigned int mt_flags; /* flags to pass to input-mt */
129
130 unsigned long *pending_palm_slots; /* slots where we reported palm
131 * and need to release */
132
133 __u8 num_received; /* how many contacts we received */
134 __u8 num_expected; /* expected last contact index */
135 __u8 buttons_count; /* number of physical buttons per touchpad */
136 __u8 touches_by_report; /* how many touches are present in one report:
137 * 1 means we should use a serial protocol
138 * > 1 means hybrid (multitouch) protocol
139 */
140
141 unsigned long jiffies; /* the frame's jiffies */
142 int timestamp; /* the timestamp to be sent */
143 int prev_scantime; /* scantime reported previously */
144
145 bool have_contact_count;
146 };
147
148 struct mt_class {
149 __s32 name; /* MT_CLS */
150 __s32 quirks;
151 __s32 sn_move; /* Signal/noise ratio for move events */
152 __s32 sn_width; /* Signal/noise ratio for width events */
153 __s32 sn_height; /* Signal/noise ratio for height events */
154 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
155 __u8 maxcontacts;
156 bool is_indirect; /* true for touchpads */
157 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
158 };
159
160 struct mt_report_data {
161 struct list_head list;
162 struct hid_report *report;
163 struct mt_application *application;
164 bool is_mt_collection;
165 };
166
167 struct mt_device {
168 struct mt_class mtclass; /* our mt device class */
169 struct timer_list release_timer; /* to release sticky fingers */
170 struct hid_device *hdev; /* hid_device we're attached to */
171 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */
172 __u8 inputmode_value; /* InputMode HID feature value */
173 __u8 maxcontacts;
174 bool is_buttonpad; /* is this device a button pad? */
175 bool serial_maybe; /* need to check for serial protocol */
176
177 struct list_head applications;
178 struct list_head reports;
179 };
180
181 static void mt_post_parse_default_settings(struct mt_device *td,
182 struct mt_application *app);
183 static void mt_post_parse(struct mt_device *td, struct mt_application *app);
184
185 /* classes of device behavior */
186 #define MT_CLS_DEFAULT 0x0001
187
188 #define MT_CLS_SERIAL 0x0002
189 #define MT_CLS_CONFIDENCE 0x0003
190 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
191 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
192 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
193 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
194 /* reserved 0x0008 */
195 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
196 #define MT_CLS_NSMU 0x000a
197 /* reserved 0x0010 */
198 /* reserved 0x0011 */
199 #define MT_CLS_WIN_8 0x0012
200 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
201 /* reserved 0x0014 */
202 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015
203 #define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016
204 #define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017
205 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU 0x0018
206
207 /* vendor specific classes */
208 #define MT_CLS_3M 0x0101
209 /* reserved 0x0102 */
210 #define MT_CLS_EGALAX 0x0103
211 #define MT_CLS_EGALAX_SERIAL 0x0104
212 #define MT_CLS_TOPSEED 0x0105
213 #define MT_CLS_PANASONIC 0x0106
214 #define MT_CLS_FLATFROG 0x0107
215 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
216 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
217 #define MT_CLS_LG 0x010a
218 #define MT_CLS_ASUS 0x010b
219 #define MT_CLS_VTL 0x0110
220 #define MT_CLS_GOOGLE 0x0111
221 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112
222 #define MT_CLS_SMART_TECH 0x0113
223 #define MT_CLS_SIS 0x0457
224
225 #define MT_DEFAULT_MAXCONTACT 10
226 #define MT_MAX_MAXCONTACT 250
227
228 /*
229 * Resync device and local timestamps after that many microseconds without
230 * receiving data.
231 */
232 #define MAX_TIMESTAMP_INTERVAL 1000000
233
234 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
235 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
236
237 /*
238 * these device-dependent functions determine what slot corresponds
239 * to a valid contact that was just read.
240 */
241
cypress_compute_slot(struct mt_application * application,struct mt_usages * slot)242 static int cypress_compute_slot(struct mt_application *application,
243 struct mt_usages *slot)
244 {
245 if (*slot->contactid != 0 || application->num_received == 0)
246 return *slot->contactid;
247 else
248 return -1;
249 }
250
251 static const struct mt_class mt_classes[] = {
252 { .name = MT_CLS_DEFAULT,
253 .quirks = MT_QUIRK_ALWAYS_VALID |
254 MT_QUIRK_CONTACT_CNT_ACCURATE },
255 { .name = MT_CLS_NSMU,
256 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
257 { .name = MT_CLS_SERIAL,
258 .quirks = MT_QUIRK_ALWAYS_VALID},
259 { .name = MT_CLS_CONFIDENCE,
260 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
261 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
262 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
263 MT_QUIRK_SLOT_IS_CONTACTID },
264 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
265 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
266 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
267 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
268 .quirks = MT_QUIRK_VALID_IS_INRANGE |
269 MT_QUIRK_SLOT_IS_CONTACTID,
270 .maxcontacts = 2 },
271 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
272 .quirks = MT_QUIRK_VALID_IS_INRANGE |
273 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
274 .maxcontacts = 2 },
275 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
276 .quirks = MT_QUIRK_VALID_IS_INRANGE |
277 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
278 { .name = MT_CLS_WIN_8,
279 .quirks = MT_QUIRK_ALWAYS_VALID |
280 MT_QUIRK_IGNORE_DUPLICATES |
281 MT_QUIRK_HOVERING |
282 MT_QUIRK_CONTACT_CNT_ACCURATE |
283 MT_QUIRK_STICKY_FINGERS |
284 MT_QUIRK_WIN8_PTP_BUTTONS,
285 .export_all_inputs = true },
286 { .name = MT_CLS_EXPORT_ALL_INPUTS,
287 .quirks = MT_QUIRK_ALWAYS_VALID |
288 MT_QUIRK_CONTACT_CNT_ACCURATE,
289 .export_all_inputs = true },
290 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
291 .quirks = MT_QUIRK_ALWAYS_VALID |
292 MT_QUIRK_IGNORE_DUPLICATES |
293 MT_QUIRK_HOVERING |
294 MT_QUIRK_CONTACT_CNT_ACCURATE |
295 MT_QUIRK_STICKY_FINGERS |
296 MT_QUIRK_WIN8_PTP_BUTTONS |
297 MT_QUIRK_FORCE_MULTI_INPUT,
298 .export_all_inputs = true },
299 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
300 .quirks = MT_QUIRK_IGNORE_DUPLICATES |
301 MT_QUIRK_HOVERING |
302 MT_QUIRK_CONTACT_CNT_ACCURATE |
303 MT_QUIRK_STICKY_FINGERS |
304 MT_QUIRK_WIN8_PTP_BUTTONS |
305 MT_QUIRK_FORCE_MULTI_INPUT |
306 MT_QUIRK_NOT_SEEN_MEANS_UP,
307 .export_all_inputs = true },
308 { .name = MT_CLS_WIN_8_DISABLE_WAKEUP,
309 .quirks = MT_QUIRK_ALWAYS_VALID |
310 MT_QUIRK_IGNORE_DUPLICATES |
311 MT_QUIRK_HOVERING |
312 MT_QUIRK_CONTACT_CNT_ACCURATE |
313 MT_QUIRK_STICKY_FINGERS |
314 MT_QUIRK_WIN8_PTP_BUTTONS |
315 MT_QUIRK_DISABLE_WAKEUP,
316 .export_all_inputs = true },
317 { .name = MT_CLS_WIN_8_NO_STICKY_FINGERS,
318 .quirks = MT_QUIRK_ALWAYS_VALID |
319 MT_QUIRK_IGNORE_DUPLICATES |
320 MT_QUIRK_HOVERING |
321 MT_QUIRK_CONTACT_CNT_ACCURATE |
322 MT_QUIRK_WIN8_PTP_BUTTONS,
323 .export_all_inputs = true },
324
325 /*
326 * vendor specific classes
327 */
328 { .name = MT_CLS_3M,
329 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
330 MT_QUIRK_SLOT_IS_CONTACTID |
331 MT_QUIRK_TOUCH_SIZE_SCALING,
332 .sn_move = 2048,
333 .sn_width = 128,
334 .sn_height = 128,
335 .maxcontacts = 60,
336 },
337 { .name = MT_CLS_EGALAX,
338 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
339 MT_QUIRK_VALID_IS_INRANGE,
340 .sn_move = 4096,
341 .sn_pressure = 32,
342 },
343 { .name = MT_CLS_EGALAX_SERIAL,
344 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
345 MT_QUIRK_ALWAYS_VALID,
346 .sn_move = 4096,
347 .sn_pressure = 32,
348 },
349 { .name = MT_CLS_TOPSEED,
350 .quirks = MT_QUIRK_ALWAYS_VALID,
351 .is_indirect = true,
352 .maxcontacts = 2,
353 },
354 { .name = MT_CLS_PANASONIC,
355 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
356 .maxcontacts = 4 },
357 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
358 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
359 MT_QUIRK_VALID_IS_INRANGE |
360 MT_QUIRK_SLOT_IS_CONTACTID,
361 .maxcontacts = 2
362 },
363 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
364 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
365 MT_QUIRK_SLOT_IS_CONTACTID
366 },
367
368 { .name = MT_CLS_FLATFROG,
369 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
370 MT_QUIRK_NO_AREA,
371 .sn_move = 2048,
372 .maxcontacts = 40,
373 },
374 { .name = MT_CLS_LG,
375 .quirks = MT_QUIRK_ALWAYS_VALID |
376 MT_QUIRK_FIX_CONST_CONTACT_ID |
377 MT_QUIRK_IGNORE_DUPLICATES |
378 MT_QUIRK_HOVERING |
379 MT_QUIRK_CONTACT_CNT_ACCURATE },
380 { .name = MT_CLS_ASUS,
381 .quirks = MT_QUIRK_ALWAYS_VALID |
382 MT_QUIRK_CONTACT_CNT_ACCURATE |
383 MT_QUIRK_ASUS_CUSTOM_UP },
384 { .name = MT_CLS_VTL,
385 .quirks = MT_QUIRK_ALWAYS_VALID |
386 MT_QUIRK_CONTACT_CNT_ACCURATE |
387 MT_QUIRK_FORCE_GET_FEATURE,
388 },
389 { .name = MT_CLS_GOOGLE,
390 .quirks = MT_QUIRK_ALWAYS_VALID |
391 MT_QUIRK_CONTACT_CNT_ACCURATE |
392 MT_QUIRK_SLOT_IS_CONTACTID |
393 MT_QUIRK_HOVERING
394 },
395 { .name = MT_CLS_RAZER_BLADE_STEALTH,
396 .quirks = MT_QUIRK_ALWAYS_VALID |
397 MT_QUIRK_IGNORE_DUPLICATES |
398 MT_QUIRK_HOVERING |
399 MT_QUIRK_CONTACT_CNT_ACCURATE |
400 MT_QUIRK_WIN8_PTP_BUTTONS,
401 },
402 { .name = MT_CLS_SMART_TECH,
403 .quirks = MT_QUIRK_ALWAYS_VALID |
404 MT_QUIRK_IGNORE_DUPLICATES |
405 MT_QUIRK_CONTACT_CNT_ACCURATE |
406 MT_QUIRK_SEPARATE_APP_REPORT,
407 },
408 { .name = MT_CLS_SIS,
409 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
410 MT_QUIRK_ALWAYS_VALID |
411 MT_QUIRK_CONTACT_CNT_ACCURATE,
412 },
413 { }
414 };
415
mt_show_quirks(struct device * dev,struct device_attribute * attr,char * buf)416 static ssize_t mt_show_quirks(struct device *dev,
417 struct device_attribute *attr,
418 char *buf)
419 {
420 struct hid_device *hdev = to_hid_device(dev);
421 struct mt_device *td = hid_get_drvdata(hdev);
422
423 return sprintf(buf, "%u\n", td->mtclass.quirks);
424 }
425
mt_set_quirks(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)426 static ssize_t mt_set_quirks(struct device *dev,
427 struct device_attribute *attr,
428 const char *buf, size_t count)
429 {
430 struct hid_device *hdev = to_hid_device(dev);
431 struct mt_device *td = hid_get_drvdata(hdev);
432 struct mt_application *application;
433
434 unsigned long val;
435
436 if (kstrtoul(buf, 0, &val))
437 return -EINVAL;
438
439 td->mtclass.quirks = val;
440
441 list_for_each_entry(application, &td->applications, list) {
442 application->quirks = val;
443 if (!application->have_contact_count)
444 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
445 }
446
447 return count;
448 }
449
450 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
451
452 static struct attribute *sysfs_attrs[] = {
453 &dev_attr_quirks.attr,
454 NULL
455 };
456
457 static const struct attribute_group mt_attribute_group = {
458 .attrs = sysfs_attrs
459 };
460
mt_get_feature(struct hid_device * hdev,struct hid_report * report)461 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
462 {
463 int ret;
464 u32 size = hid_report_len(report);
465 u8 *buf;
466
467 /*
468 * Do not fetch the feature report if the device has been explicitly
469 * marked as non-capable.
470 */
471 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS)
472 return;
473
474 buf = hid_alloc_report_buf(report, GFP_KERNEL);
475 if (!buf)
476 return;
477
478 ret = hid_hw_raw_request(hdev, report->id, buf, size,
479 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
480 if (ret < 0) {
481 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
482 report->id);
483 } else {
484 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
485 size, 0);
486 if (ret)
487 dev_warn(&hdev->dev, "failed to report feature\n");
488 }
489
490 kfree(buf);
491 }
492
mt_feature_mapping(struct hid_device * hdev,struct hid_field * field,struct hid_usage * usage)493 static void mt_feature_mapping(struct hid_device *hdev,
494 struct hid_field *field, struct hid_usage *usage)
495 {
496 struct mt_device *td = hid_get_drvdata(hdev);
497
498 switch (usage->hid) {
499 case HID_DG_CONTACTMAX:
500 mt_get_feature(hdev, field->report);
501
502 td->maxcontacts = field->value[0];
503 if (!td->maxcontacts &&
504 field->logical_maximum <= MT_MAX_MAXCONTACT)
505 td->maxcontacts = field->logical_maximum;
506 if (td->mtclass.maxcontacts)
507 /* check if the maxcontacts is given by the class */
508 td->maxcontacts = td->mtclass.maxcontacts;
509
510 break;
511 case HID_DG_BUTTONTYPE:
512 if (usage->usage_index >= field->report_count) {
513 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
514 break;
515 }
516
517 mt_get_feature(hdev, field->report);
518 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
519 td->is_buttonpad = true;
520
521 break;
522 case 0xff0000c5:
523 /* Retrieve the Win8 blob once to enable some devices */
524 if (usage->usage_index == 0)
525 mt_get_feature(hdev, field->report);
526 break;
527 }
528 }
529
set_abs(struct input_dev * input,unsigned int code,struct hid_field * field,int snratio)530 static void set_abs(struct input_dev *input, unsigned int code,
531 struct hid_field *field, int snratio)
532 {
533 int fmin = field->logical_minimum;
534 int fmax = field->logical_maximum;
535 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
536 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
537 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
538 }
539
mt_allocate_usage(struct hid_device * hdev,struct mt_application * application)540 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev,
541 struct mt_application *application)
542 {
543 struct mt_usages *usage;
544
545 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL);
546 if (!usage)
547 return NULL;
548
549 /* set some defaults so we do not need to check for null pointers */
550 usage->x = DEFAULT_ZERO;
551 usage->y = DEFAULT_ZERO;
552 usage->cx = DEFAULT_ZERO;
553 usage->cy = DEFAULT_ZERO;
554 usage->p = DEFAULT_ZERO;
555 usage->w = DEFAULT_ZERO;
556 usage->h = DEFAULT_ZERO;
557 usage->a = DEFAULT_ZERO;
558 usage->contactid = DEFAULT_ZERO;
559 usage->tip_state = DEFAULT_FALSE;
560 usage->inrange_state = DEFAULT_FALSE;
561 usage->confidence_state = DEFAULT_TRUE;
562
563 list_add_tail(&usage->list, &application->mt_usages);
564
565 return usage;
566 }
567
mt_allocate_application(struct mt_device * td,struct hid_report * report)568 static struct mt_application *mt_allocate_application(struct mt_device *td,
569 struct hid_report *report)
570 {
571 unsigned int application = report->application;
572 struct mt_application *mt_application;
573
574 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application),
575 GFP_KERNEL);
576 if (!mt_application)
577 return NULL;
578
579 mt_application->application = application;
580 INIT_LIST_HEAD(&mt_application->mt_usages);
581
582 if (application == HID_DG_TOUCHSCREEN)
583 mt_application->mt_flags |= INPUT_MT_DIRECT;
584
585 /*
586 * Model touchscreens providing buttons as touchpads.
587 */
588 if (application == HID_DG_TOUCHPAD) {
589 mt_application->mt_flags |= INPUT_MT_POINTER;
590 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
591 }
592
593 mt_application->scantime = DEFAULT_ZERO;
594 mt_application->raw_cc = DEFAULT_ZERO;
595 mt_application->quirks = td->mtclass.quirks;
596 mt_application->report_id = report->id;
597
598 list_add_tail(&mt_application->list, &td->applications);
599
600 return mt_application;
601 }
602
mt_find_application(struct mt_device * td,struct hid_report * report)603 static struct mt_application *mt_find_application(struct mt_device *td,
604 struct hid_report *report)
605 {
606 unsigned int application = report->application;
607 struct mt_application *tmp, *mt_application = NULL;
608
609 list_for_each_entry(tmp, &td->applications, list) {
610 if (application == tmp->application) {
611 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) ||
612 tmp->report_id == report->id) {
613 mt_application = tmp;
614 break;
615 }
616 }
617 }
618
619 if (!mt_application)
620 mt_application = mt_allocate_application(td, report);
621
622 return mt_application;
623 }
624
mt_allocate_report_data(struct mt_device * td,struct hid_report * report)625 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td,
626 struct hid_report *report)
627 {
628 struct mt_report_data *rdata;
629 struct hid_field *field;
630 int r, n;
631
632 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL);
633 if (!rdata)
634 return NULL;
635
636 rdata->report = report;
637 rdata->application = mt_find_application(td, report);
638
639 if (!rdata->application) {
640 devm_kfree(&td->hdev->dev, rdata);
641 return NULL;
642 }
643
644 for (r = 0; r < report->maxfield; r++) {
645 field = report->field[r];
646
647 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
648 continue;
649
650 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) {
651 for (n = 0; n < field->report_count; n++) {
652 if (field->usage[n].hid == HID_DG_CONTACTID) {
653 rdata->is_mt_collection = true;
654 break;
655 }
656 }
657 }
658 }
659
660 list_add_tail(&rdata->list, &td->reports);
661
662 return rdata;
663 }
664
mt_find_report_data(struct mt_device * td,struct hid_report * report)665 static struct mt_report_data *mt_find_report_data(struct mt_device *td,
666 struct hid_report *report)
667 {
668 struct mt_report_data *tmp, *rdata = NULL;
669
670 list_for_each_entry(tmp, &td->reports, list) {
671 if (report == tmp->report) {
672 rdata = tmp;
673 break;
674 }
675 }
676
677 if (!rdata)
678 rdata = mt_allocate_report_data(td, report);
679
680 return rdata;
681 }
682
mt_store_field(struct hid_device * hdev,struct mt_application * application,__s32 * value,size_t offset)683 static void mt_store_field(struct hid_device *hdev,
684 struct mt_application *application,
685 __s32 *value,
686 size_t offset)
687 {
688 struct mt_usages *usage;
689 __s32 **target;
690
691 if (list_empty(&application->mt_usages))
692 usage = mt_allocate_usage(hdev, application);
693 else
694 usage = list_last_entry(&application->mt_usages,
695 struct mt_usages,
696 list);
697
698 if (!usage)
699 return;
700
701 target = (__s32 **)((char *)usage + offset);
702
703 /* the value has already been filled, create a new slot */
704 if (*target != DEFAULT_TRUE &&
705 *target != DEFAULT_FALSE &&
706 *target != DEFAULT_ZERO) {
707 if (usage->contactid == DEFAULT_ZERO ||
708 usage->x == DEFAULT_ZERO ||
709 usage->y == DEFAULT_ZERO) {
710 hid_dbg(hdev,
711 "ignoring duplicate usage on incomplete");
712 return;
713 }
714 usage = mt_allocate_usage(hdev, application);
715 if (!usage)
716 return;
717
718 target = (__s32 **)((char *)usage + offset);
719 }
720
721 *target = value;
722 }
723
724 #define MT_STORE_FIELD(__name) \
725 mt_store_field(hdev, app, \
726 &field->value[usage->usage_index], \
727 offsetof(struct mt_usages, __name))
728
mt_touch_input_mapping(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max,struct mt_application * app)729 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
730 struct hid_field *field, struct hid_usage *usage,
731 unsigned long **bit, int *max, struct mt_application *app)
732 {
733 struct mt_device *td = hid_get_drvdata(hdev);
734 struct mt_class *cls = &td->mtclass;
735 int code;
736 struct hid_usage *prev_usage = NULL;
737
738 /*
739 * Model touchscreens providing buttons as touchpads.
740 */
741 if (field->application == HID_DG_TOUCHSCREEN &&
742 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
743 app->mt_flags |= INPUT_MT_POINTER;
744 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
745 }
746
747 /* count the buttons on touchpads */
748 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
749 app->buttons_count++;
750
751 if (usage->usage_index)
752 prev_usage = &field->usage[usage->usage_index - 1];
753
754 switch (usage->hid & HID_USAGE_PAGE) {
755
756 case HID_UP_GENDESK:
757 switch (usage->hid) {
758 case HID_GD_X:
759 if (prev_usage && (prev_usage->hid == usage->hid)) {
760 code = ABS_MT_TOOL_X;
761 MT_STORE_FIELD(cx);
762 } else {
763 code = ABS_MT_POSITION_X;
764 MT_STORE_FIELD(x);
765 }
766
767 set_abs(hi->input, code, field, cls->sn_move);
768
769 /*
770 * A system multi-axis that exports X and Y has a high
771 * chance of being used directly on a surface
772 */
773 if (field->application == HID_GD_SYSTEM_MULTIAXIS) {
774 __set_bit(INPUT_PROP_DIRECT,
775 hi->input->propbit);
776 input_set_abs_params(hi->input,
777 ABS_MT_TOOL_TYPE,
778 MT_TOOL_DIAL,
779 MT_TOOL_DIAL, 0, 0);
780 }
781
782 return 1;
783 case HID_GD_Y:
784 if (prev_usage && (prev_usage->hid == usage->hid)) {
785 code = ABS_MT_TOOL_Y;
786 MT_STORE_FIELD(cy);
787 } else {
788 code = ABS_MT_POSITION_Y;
789 MT_STORE_FIELD(y);
790 }
791
792 set_abs(hi->input, code, field, cls->sn_move);
793
794 return 1;
795 }
796 return 0;
797
798 case HID_UP_DIGITIZER:
799 switch (usage->hid) {
800 case HID_DG_INRANGE:
801 if (app->quirks & MT_QUIRK_HOVERING) {
802 input_set_abs_params(hi->input,
803 ABS_MT_DISTANCE, 0, 1, 0, 0);
804 }
805 MT_STORE_FIELD(inrange_state);
806 return 1;
807 case HID_DG_CONFIDENCE:
808 if ((cls->name == MT_CLS_WIN_8 ||
809 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT ||
810 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU ||
811 cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP) &&
812 (field->application == HID_DG_TOUCHPAD ||
813 field->application == HID_DG_TOUCHSCREEN))
814 app->quirks |= MT_QUIRK_CONFIDENCE;
815
816 if (app->quirks & MT_QUIRK_CONFIDENCE)
817 input_set_abs_params(hi->input,
818 ABS_MT_TOOL_TYPE,
819 MT_TOOL_FINGER,
820 MT_TOOL_PALM, 0, 0);
821
822 MT_STORE_FIELD(confidence_state);
823 return 1;
824 case HID_DG_TIPSWITCH:
825 if (field->application != HID_GD_SYSTEM_MULTIAXIS)
826 input_set_capability(hi->input,
827 EV_KEY, BTN_TOUCH);
828 MT_STORE_FIELD(tip_state);
829 return 1;
830 case HID_DG_CONTACTID:
831 MT_STORE_FIELD(contactid);
832 app->touches_by_report++;
833 return 1;
834 case HID_DG_WIDTH:
835 if (!(app->quirks & MT_QUIRK_NO_AREA))
836 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
837 cls->sn_width);
838 MT_STORE_FIELD(w);
839 return 1;
840 case HID_DG_HEIGHT:
841 if (!(app->quirks & MT_QUIRK_NO_AREA)) {
842 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
843 cls->sn_height);
844
845 /*
846 * Only set ABS_MT_ORIENTATION if it is not
847 * already set by the HID_DG_AZIMUTH usage.
848 */
849 if (!test_bit(ABS_MT_ORIENTATION,
850 hi->input->absbit))
851 input_set_abs_params(hi->input,
852 ABS_MT_ORIENTATION, 0, 1, 0, 0);
853 }
854 MT_STORE_FIELD(h);
855 return 1;
856 case HID_DG_TIPPRESSURE:
857 set_abs(hi->input, ABS_MT_PRESSURE, field,
858 cls->sn_pressure);
859 MT_STORE_FIELD(p);
860 return 1;
861 case HID_DG_SCANTIME:
862 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
863 app->scantime = &field->value[usage->usage_index];
864 app->scantime_logical_max = field->logical_maximum;
865 return 1;
866 case HID_DG_CONTACTCOUNT:
867 app->have_contact_count = true;
868 app->raw_cc = &field->value[usage->usage_index];
869 return 1;
870 case HID_DG_AZIMUTH:
871 /*
872 * Azimuth has the range of [0, MAX) representing a full
873 * revolution. Set ABS_MT_ORIENTATION to a quarter of
874 * MAX according the definition of ABS_MT_ORIENTATION
875 */
876 input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
877 -field->logical_maximum / 4,
878 field->logical_maximum / 4,
879 cls->sn_move ?
880 field->logical_maximum / cls->sn_move : 0, 0);
881 MT_STORE_FIELD(a);
882 return 1;
883 case HID_DG_CONTACTMAX:
884 /* contact max are global to the report */
885 return -1;
886 case HID_DG_TOUCH:
887 /* Legacy devices use TIPSWITCH and not TOUCH.
888 * Let's just ignore this field. */
889 return -1;
890 }
891 /* let hid-input decide for the others */
892 return 0;
893
894 case HID_UP_BUTTON:
895 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
896 /*
897 * MS PTP spec says that external buttons left and right have
898 * usages 2 and 3.
899 */
900 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
901 field->application == HID_DG_TOUCHPAD &&
902 (usage->hid & HID_USAGE) > 1)
903 code--;
904
905 if (field->application == HID_GD_SYSTEM_MULTIAXIS)
906 code = BTN_0 + ((usage->hid - 1) & HID_USAGE);
907
908 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
909 if (!*bit)
910 return -1;
911 input_set_capability(hi->input, EV_KEY, code);
912 return 1;
913
914 case 0xff000000:
915 /* we do not want to map these: no input-oriented meaning */
916 return -1;
917 }
918
919 return 0;
920 }
921
mt_compute_slot(struct mt_device * td,struct mt_application * app,struct mt_usages * slot,struct input_dev * input)922 static int mt_compute_slot(struct mt_device *td, struct mt_application *app,
923 struct mt_usages *slot,
924 struct input_dev *input)
925 {
926 __s32 quirks = app->quirks;
927
928 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
929 return *slot->contactid;
930
931 if (quirks & MT_QUIRK_CYPRESS)
932 return cypress_compute_slot(app, slot);
933
934 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
935 return app->num_received;
936
937 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
938 return *slot->contactid - 1;
939
940 return input_mt_get_slot_by_key(input, *slot->contactid);
941 }
942
mt_release_pending_palms(struct mt_device * td,struct mt_application * app,struct input_dev * input)943 static void mt_release_pending_palms(struct mt_device *td,
944 struct mt_application *app,
945 struct input_dev *input)
946 {
947 int slotnum;
948 bool need_sync = false;
949
950 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) {
951 clear_bit(slotnum, app->pending_palm_slots);
952
953 input_mt_slot(input, slotnum);
954 input_mt_report_slot_inactive(input);
955
956 need_sync = true;
957 }
958
959 if (need_sync) {
960 input_mt_sync_frame(input);
961 input_sync(input);
962 }
963 }
964
965 /*
966 * this function is called when a whole packet has been received and processed,
967 * so that it can decide what to send to the input layer.
968 */
mt_sync_frame(struct mt_device * td,struct mt_application * app,struct input_dev * input)969 static void mt_sync_frame(struct mt_device *td, struct mt_application *app,
970 struct input_dev *input)
971 {
972 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS)
973 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state);
974
975 input_mt_sync_frame(input);
976 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp);
977 input_sync(input);
978
979 mt_release_pending_palms(td, app, input);
980
981 app->num_received = 0;
982 app->left_button_state = 0;
983
984 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
985 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
986 else
987 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
988 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
989 }
990
mt_compute_timestamp(struct mt_application * app,__s32 value)991 static int mt_compute_timestamp(struct mt_application *app, __s32 value)
992 {
993 long delta = value - app->prev_scantime;
994 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies);
995
996 app->jiffies = jiffies;
997
998 if (delta < 0)
999 delta += app->scantime_logical_max;
1000
1001 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
1002 delta *= 100;
1003
1004 if (jdelta > MAX_TIMESTAMP_INTERVAL)
1005 /* No data received for a while, resync the timestamp. */
1006 return 0;
1007 else
1008 return app->timestamp + delta;
1009 }
1010
mt_touch_event(struct hid_device * hid,struct hid_field * field,struct hid_usage * usage,__s32 value)1011 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
1012 struct hid_usage *usage, __s32 value)
1013 {
1014 /* we will handle the hidinput part later, now remains hiddev */
1015 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
1016 hid->hiddev_hid_event(hid, field, usage, value);
1017
1018 return 1;
1019 }
1020
mt_process_slot(struct mt_device * td,struct input_dev * input,struct mt_application * app,struct mt_usages * slot)1021 static int mt_process_slot(struct mt_device *td, struct input_dev *input,
1022 struct mt_application *app,
1023 struct mt_usages *slot)
1024 {
1025 struct input_mt *mt = input->mt;
1026 struct hid_device *hdev = td->hdev;
1027 __s32 quirks = app->quirks;
1028 bool valid = true;
1029 bool confidence_state = true;
1030 bool inrange_state = false;
1031 int active;
1032 int slotnum;
1033 int tool = MT_TOOL_FINGER;
1034
1035 if (!slot)
1036 return -EINVAL;
1037
1038 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
1039 app->num_received >= app->num_expected)
1040 return -EAGAIN;
1041
1042 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) {
1043 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
1044 valid = *slot->inrange_state;
1045 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
1046 valid = *slot->tip_state;
1047 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
1048 valid = *slot->confidence_state;
1049
1050 if (!valid)
1051 return 0;
1052 }
1053
1054 slotnum = mt_compute_slot(td, app, slot, input);
1055 if (slotnum < 0 || slotnum >= td->maxcontacts)
1056 return 0;
1057
1058 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
1059 struct input_mt_slot *i_slot = &mt->slots[slotnum];
1060
1061 if (input_mt_is_active(i_slot) &&
1062 input_mt_is_used(mt, i_slot))
1063 return -EAGAIN;
1064 }
1065
1066 if (quirks & MT_QUIRK_CONFIDENCE)
1067 confidence_state = *slot->confidence_state;
1068
1069 if (quirks & MT_QUIRK_HOVERING)
1070 inrange_state = *slot->inrange_state;
1071
1072 active = *slot->tip_state || inrange_state;
1073
1074 if (app->application == HID_GD_SYSTEM_MULTIAXIS)
1075 tool = MT_TOOL_DIAL;
1076 else if (unlikely(!confidence_state)) {
1077 tool = MT_TOOL_PALM;
1078 if (!active && mt &&
1079 input_mt_is_active(&mt->slots[slotnum])) {
1080 /*
1081 * The non-confidence was reported for
1082 * previously valid contact that is also no
1083 * longer valid. We can't simply report
1084 * lift-off as userspace will not be aware
1085 * of non-confidence, so we need to split
1086 * it into 2 events: active MT_TOOL_PALM
1087 * and a separate liftoff.
1088 */
1089 active = true;
1090 set_bit(slotnum, app->pending_palm_slots);
1091 }
1092 }
1093
1094 input_mt_slot(input, slotnum);
1095 input_mt_report_slot_state(input, tool, active);
1096 if (active) {
1097 /* this finger is in proximity of the sensor */
1098 int wide = (*slot->w > *slot->h);
1099 int major = max(*slot->w, *slot->h);
1100 int minor = min(*slot->w, *slot->h);
1101 int orientation = wide;
1102 int max_azimuth;
1103 int azimuth;
1104 int x;
1105 int y;
1106 int cx;
1107 int cy;
1108
1109 if (slot->a != DEFAULT_ZERO) {
1110 /*
1111 * Azimuth is counter-clockwise and ranges from [0, MAX)
1112 * (a full revolution). Convert it to clockwise ranging
1113 * [-MAX/2, MAX/2].
1114 *
1115 * Note that ABS_MT_ORIENTATION require us to report
1116 * the limit of [-MAX/4, MAX/4], but the value can go
1117 * out of range to [-MAX/2, MAX/2] to report an upside
1118 * down ellipsis.
1119 */
1120 azimuth = *slot->a;
1121 max_azimuth = input_abs_get_max(input,
1122 ABS_MT_ORIENTATION);
1123 if (azimuth > max_azimuth * 2)
1124 azimuth -= max_azimuth * 4;
1125 orientation = -azimuth;
1126 if (quirks & MT_QUIRK_ORIENTATION_INVERT)
1127 orientation = -orientation;
1128
1129 }
1130
1131 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
1132 /*
1133 * divided by two to match visual scale of touch
1134 * for devices with this quirk
1135 */
1136 major = major >> 1;
1137 minor = minor >> 1;
1138 }
1139
1140 x = hdev->quirks & HID_QUIRK_X_INVERT ?
1141 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->x :
1142 *slot->x;
1143 y = hdev->quirks & HID_QUIRK_Y_INVERT ?
1144 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->y :
1145 *slot->y;
1146 cx = hdev->quirks & HID_QUIRK_X_INVERT ?
1147 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->cx :
1148 *slot->cx;
1149 cy = hdev->quirks & HID_QUIRK_Y_INVERT ?
1150 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->cy :
1151 *slot->cy;
1152
1153 input_event(input, EV_ABS, ABS_MT_POSITION_X, x);
1154 input_event(input, EV_ABS, ABS_MT_POSITION_Y, y);
1155 input_event(input, EV_ABS, ABS_MT_TOOL_X, cx);
1156 input_event(input, EV_ABS, ABS_MT_TOOL_Y, cy);
1157 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state);
1158 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation);
1159 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p);
1160 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
1161 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
1162
1163 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
1164 }
1165
1166 return 0;
1167 }
1168
mt_process_mt_event(struct hid_device * hid,struct mt_application * app,struct hid_field * field,struct hid_usage * usage,__s32 value,bool first_packet)1169 static void mt_process_mt_event(struct hid_device *hid,
1170 struct mt_application *app,
1171 struct hid_field *field,
1172 struct hid_usage *usage,
1173 __s32 value,
1174 bool first_packet)
1175 {
1176 __s32 quirks = app->quirks;
1177 struct input_dev *input = field->hidinput->input;
1178
1179 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT))
1180 return;
1181
1182 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) {
1183
1184 /*
1185 * For Win8 PTP touchpads we should only look at
1186 * non finger/touch events in the first_packet of a
1187 * (possible) multi-packet frame.
1188 */
1189 if (!first_packet)
1190 return;
1191
1192 /*
1193 * For Win8 PTP touchpads we map both the clickpad click
1194 * and any "external" left buttons to BTN_LEFT if a
1195 * device claims to have both we need to report 1 for
1196 * BTN_LEFT if either is pressed, so we or all values
1197 * together and report the result in mt_sync_frame().
1198 */
1199 if (usage->type == EV_KEY && usage->code == BTN_LEFT) {
1200 app->left_button_state |= value;
1201 return;
1202 }
1203 }
1204
1205 input_event(input, usage->type, usage->code, value);
1206 }
1207
mt_touch_report(struct hid_device * hid,struct mt_report_data * rdata)1208 static void mt_touch_report(struct hid_device *hid,
1209 struct mt_report_data *rdata)
1210 {
1211 struct mt_device *td = hid_get_drvdata(hid);
1212 struct hid_report *report = rdata->report;
1213 struct mt_application *app = rdata->application;
1214 struct hid_field *field;
1215 struct input_dev *input;
1216 struct mt_usages *slot;
1217 bool first_packet;
1218 unsigned count;
1219 int r, n;
1220 int scantime = 0;
1221 int contact_count = -1;
1222
1223 /* sticky fingers release in progress, abort */
1224 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1225 return;
1226
1227 scantime = *app->scantime;
1228 app->timestamp = mt_compute_timestamp(app, scantime);
1229 if (app->raw_cc != DEFAULT_ZERO)
1230 contact_count = *app->raw_cc;
1231
1232 /*
1233 * Includes multi-packet support where subsequent
1234 * packets are sent with zero contactcount.
1235 */
1236 if (contact_count >= 0) {
1237 /*
1238 * For Win8 PTPs the first packet (td->num_received == 0) may
1239 * have a contactcount of 0 if there only is a button event.
1240 * We double check that this is not a continuation packet
1241 * of a possible multi-packet frame be checking that the
1242 * timestamp has changed.
1243 */
1244 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
1245 app->num_received == 0 &&
1246 app->prev_scantime != scantime)
1247 app->num_expected = contact_count;
1248 /* A non 0 contact count always indicates a first packet */
1249 else if (contact_count)
1250 app->num_expected = contact_count;
1251 }
1252 app->prev_scantime = scantime;
1253
1254 first_packet = app->num_received == 0;
1255
1256 input = report->field[0]->hidinput->input;
1257
1258 list_for_each_entry(slot, &app->mt_usages, list) {
1259 if (!mt_process_slot(td, input, app, slot))
1260 app->num_received++;
1261 }
1262
1263 for (r = 0; r < report->maxfield; r++) {
1264 field = report->field[r];
1265 count = field->report_count;
1266
1267 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
1268 continue;
1269
1270 for (n = 0; n < count; n++)
1271 mt_process_mt_event(hid, app, field,
1272 &field->usage[n], field->value[n],
1273 first_packet);
1274 }
1275
1276 if (app->num_received >= app->num_expected)
1277 mt_sync_frame(td, app, input);
1278
1279 /*
1280 * Windows 8 specs says 2 things:
1281 * - once a contact has been reported, it has to be reported in each
1282 * subsequent report
1283 * - the report rate when fingers are present has to be at least
1284 * the refresh rate of the screen, 60 or 120 Hz
1285 *
1286 * I interprete this that the specification forces a report rate of
1287 * at least 60 Hz for a touchscreen to be certified.
1288 * Which means that if we do not get a report whithin 16 ms, either
1289 * something wrong happens, either the touchscreen forgets to send
1290 * a release. Taking a reasonable margin allows to remove issues
1291 * with USB communication or the load of the machine.
1292 *
1293 * Given that Win 8 devices are forced to send a release, this will
1294 * only affect laggish machines and the ones that have a firmware
1295 * defect.
1296 */
1297 if (app->quirks & MT_QUIRK_STICKY_FINGERS) {
1298 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1299 mod_timer(&td->release_timer,
1300 jiffies + msecs_to_jiffies(100));
1301 else
1302 del_timer(&td->release_timer);
1303 }
1304
1305 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1306 }
1307
mt_touch_input_configured(struct hid_device * hdev,struct hid_input * hi,struct mt_application * app)1308 static int mt_touch_input_configured(struct hid_device *hdev,
1309 struct hid_input *hi,
1310 struct mt_application *app)
1311 {
1312 struct mt_device *td = hid_get_drvdata(hdev);
1313 struct mt_class *cls = &td->mtclass;
1314 struct input_dev *input = hi->input;
1315 int ret;
1316
1317 if (!td->maxcontacts)
1318 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
1319
1320 mt_post_parse(td, app);
1321 if (td->serial_maybe)
1322 mt_post_parse_default_settings(td, app);
1323
1324 if (cls->is_indirect)
1325 app->mt_flags |= INPUT_MT_POINTER;
1326
1327 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
1328 app->mt_flags |= INPUT_MT_DROP_UNUSED;
1329
1330 /* check for clickpads */
1331 if ((app->mt_flags & INPUT_MT_POINTER) &&
1332 (app->buttons_count == 1))
1333 td->is_buttonpad = true;
1334
1335 if (td->is_buttonpad)
1336 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
1337
1338 app->pending_palm_slots = devm_kcalloc(&hi->input->dev,
1339 BITS_TO_LONGS(td->maxcontacts),
1340 sizeof(long),
1341 GFP_KERNEL);
1342 if (!app->pending_palm_slots)
1343 return -ENOMEM;
1344
1345 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags);
1346 if (ret)
1347 return ret;
1348
1349 app->mt_flags = 0;
1350 return 0;
1351 }
1352
1353 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
1354 max, EV_KEY, (c))
mt_input_mapping(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)1355 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
1356 struct hid_field *field, struct hid_usage *usage,
1357 unsigned long **bit, int *max)
1358 {
1359 struct mt_device *td = hid_get_drvdata(hdev);
1360 struct mt_application *application;
1361 struct mt_report_data *rdata;
1362
1363 rdata = mt_find_report_data(td, field->report);
1364 if (!rdata) {
1365 hid_err(hdev, "failed to allocate data for report\n");
1366 return 0;
1367 }
1368
1369 application = rdata->application;
1370
1371 /*
1372 * If mtclass.export_all_inputs is not set, only map fields from
1373 * TouchScreen or TouchPad collections. We need to ignore fields
1374 * that belong to other collections such as Mouse that might have
1375 * the same GenericDesktop usages.
1376 */
1377 if (!td->mtclass.export_all_inputs &&
1378 field->application != HID_DG_TOUCHSCREEN &&
1379 field->application != HID_DG_PEN &&
1380 field->application != HID_DG_TOUCHPAD &&
1381 field->application != HID_GD_KEYBOARD &&
1382 field->application != HID_GD_SYSTEM_CONTROL &&
1383 field->application != HID_CP_CONSUMER_CONTROL &&
1384 field->application != HID_GD_WIRELESS_RADIO_CTLS &&
1385 field->application != HID_GD_SYSTEM_MULTIAXIS &&
1386 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1387 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP))
1388 return -1;
1389
1390 /*
1391 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
1392 * touchpad report descriptor. We need to treat these as an array to
1393 * map usages to input keys.
1394 */
1395 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1396 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
1397 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
1398 set_bit(EV_REP, hi->input->evbit);
1399 if (field->flags & HID_MAIN_ITEM_VARIABLE)
1400 field->flags &= ~HID_MAIN_ITEM_VARIABLE;
1401 switch (usage->hid & HID_USAGE) {
1402 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break;
1403 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break;
1404 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break;
1405 case 0x6b: mt_map_key_clear(KEY_F21); break;
1406 case 0x6c: mt_map_key_clear(KEY_SLEEP); break;
1407 default:
1408 return -1;
1409 }
1410 return 1;
1411 }
1412
1413 if (rdata->is_mt_collection)
1414 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max,
1415 application);
1416
1417 /*
1418 * some egalax touchscreens have "application == DG_TOUCHSCREEN"
1419 * for the stylus. Overwrite the hid_input application
1420 */
1421 if (field->physical == HID_DG_STYLUS)
1422 hi->application = HID_DG_STYLUS;
1423
1424 /* let hid-core decide for the others */
1425 return 0;
1426 }
1427
mt_input_mapped(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)1428 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
1429 struct hid_field *field, struct hid_usage *usage,
1430 unsigned long **bit, int *max)
1431 {
1432 struct mt_device *td = hid_get_drvdata(hdev);
1433 struct mt_report_data *rdata;
1434
1435 rdata = mt_find_report_data(td, field->report);
1436 if (rdata && rdata->is_mt_collection) {
1437 /* We own these mappings, tell hid-input to ignore them */
1438 return -1;
1439 }
1440
1441 /* let hid-core decide for the others */
1442 return 0;
1443 }
1444
mt_event(struct hid_device * hid,struct hid_field * field,struct hid_usage * usage,__s32 value)1445 static int mt_event(struct hid_device *hid, struct hid_field *field,
1446 struct hid_usage *usage, __s32 value)
1447 {
1448 struct mt_device *td = hid_get_drvdata(hid);
1449 struct mt_report_data *rdata;
1450
1451 rdata = mt_find_report_data(td, field->report);
1452 if (rdata && rdata->is_mt_collection)
1453 return mt_touch_event(hid, field, usage, value);
1454
1455 return 0;
1456 }
1457
mt_report_fixup(struct hid_device * hdev,__u8 * rdesc,unsigned int * size)1458 static const __u8 *mt_report_fixup(struct hid_device *hdev, __u8 *rdesc,
1459 unsigned int *size)
1460 {
1461 if (hdev->vendor == I2C_VENDOR_ID_GOODIX &&
1462 (hdev->product == I2C_DEVICE_ID_GOODIX_01E8 ||
1463 hdev->product == I2C_DEVICE_ID_GOODIX_01E9)) {
1464 if (rdesc[607] == 0x15) {
1465 rdesc[607] = 0x25;
1466 dev_info(
1467 &hdev->dev,
1468 "GT7868Q report descriptor fixup is applied.\n");
1469 } else {
1470 dev_info(
1471 &hdev->dev,
1472 "The byte is not expected for fixing the report descriptor. \
1473 It's possible that the touchpad firmware is not suitable for applying the fix. \
1474 got: %x\n",
1475 rdesc[607]);
1476 }
1477 }
1478
1479 return rdesc;
1480 }
1481
mt_report(struct hid_device * hid,struct hid_report * report)1482 static void mt_report(struct hid_device *hid, struct hid_report *report)
1483 {
1484 struct mt_device *td = hid_get_drvdata(hid);
1485 struct hid_field *field = report->field[0];
1486 struct mt_report_data *rdata;
1487
1488 if (!(hid->claimed & HID_CLAIMED_INPUT))
1489 return;
1490
1491 rdata = mt_find_report_data(td, report);
1492 if (rdata && rdata->is_mt_collection)
1493 return mt_touch_report(hid, rdata);
1494
1495 if (field && field->hidinput && field->hidinput->input)
1496 input_sync(field->hidinput->input);
1497 }
1498
mt_need_to_apply_feature(struct hid_device * hdev,struct hid_field * field,struct hid_usage * usage,enum latency_mode latency,enum report_mode report_mode,bool * inputmode_found)1499 static bool mt_need_to_apply_feature(struct hid_device *hdev,
1500 struct hid_field *field,
1501 struct hid_usage *usage,
1502 enum latency_mode latency,
1503 enum report_mode report_mode,
1504 bool *inputmode_found)
1505 {
1506 struct mt_device *td = hid_get_drvdata(hdev);
1507 struct mt_class *cls = &td->mtclass;
1508 struct hid_report *report = field->report;
1509 unsigned int index = usage->usage_index;
1510 char *buf;
1511 u32 report_len;
1512 int max;
1513
1514 switch (usage->hid) {
1515 case HID_DG_INPUTMODE:
1516 /*
1517 * Some elan panels wrongly declare 2 input mode features,
1518 * and silently ignore when we set the value in the second
1519 * field. Skip the second feature and hope for the best.
1520 */
1521 if (*inputmode_found)
1522 return false;
1523
1524 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1525 report_len = hid_report_len(report);
1526 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1527 if (!buf) {
1528 hid_err(hdev,
1529 "failed to allocate buffer for report\n");
1530 return false;
1531 }
1532 hid_hw_raw_request(hdev, report->id, buf, report_len,
1533 HID_FEATURE_REPORT,
1534 HID_REQ_GET_REPORT);
1535 kfree(buf);
1536 }
1537
1538 field->value[index] = td->inputmode_value;
1539 *inputmode_found = true;
1540 return true;
1541
1542 case HID_DG_CONTACTMAX:
1543 if (cls->maxcontacts) {
1544 max = min_t(int, field->logical_maximum,
1545 cls->maxcontacts);
1546 if (field->value[index] != max) {
1547 field->value[index] = max;
1548 return true;
1549 }
1550 }
1551 break;
1552
1553 case HID_DG_LATENCYMODE:
1554 field->value[index] = latency;
1555 return true;
1556
1557 case HID_DG_SURFACESWITCH:
1558 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_CONTACTS);
1559 return true;
1560
1561 case HID_DG_BUTTONSWITCH:
1562 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_BUTTONS);
1563 return true;
1564 }
1565
1566 return false; /* no need to update the report */
1567 }
1568
mt_set_modes(struct hid_device * hdev,enum latency_mode latency,enum report_mode report_mode)1569 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency,
1570 enum report_mode report_mode)
1571 {
1572 struct hid_report_enum *rep_enum;
1573 struct hid_report *rep;
1574 struct hid_usage *usage;
1575 int i, j;
1576 bool update_report;
1577 bool inputmode_found = false;
1578
1579 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
1580 list_for_each_entry(rep, &rep_enum->report_list, list) {
1581 update_report = false;
1582
1583 for (i = 0; i < rep->maxfield; i++) {
1584 /* Ignore if report count is out of bounds. */
1585 if (rep->field[i]->report_count < 1)
1586 continue;
1587
1588 for (j = 0; j < rep->field[i]->maxusage; j++) {
1589 usage = &rep->field[i]->usage[j];
1590
1591 if (mt_need_to_apply_feature(hdev,
1592 rep->field[i],
1593 usage,
1594 latency,
1595 report_mode,
1596 &inputmode_found))
1597 update_report = true;
1598 }
1599 }
1600
1601 if (update_report)
1602 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT);
1603 }
1604 }
1605
mt_post_parse_default_settings(struct mt_device * td,struct mt_application * app)1606 static void mt_post_parse_default_settings(struct mt_device *td,
1607 struct mt_application *app)
1608 {
1609 __s32 quirks = app->quirks;
1610
1611 /* unknown serial device needs special quirks */
1612 if (list_is_singular(&app->mt_usages)) {
1613 quirks |= MT_QUIRK_ALWAYS_VALID;
1614 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1615 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1616 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1617 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1618 }
1619
1620 app->quirks = quirks;
1621 }
1622
mt_post_parse(struct mt_device * td,struct mt_application * app)1623 static void mt_post_parse(struct mt_device *td, struct mt_application *app)
1624 {
1625 if (!app->have_contact_count)
1626 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1627 }
1628
mt_input_configured(struct hid_device * hdev,struct hid_input * hi)1629 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1630 {
1631 struct mt_device *td = hid_get_drvdata(hdev);
1632 const char *suffix = NULL;
1633 struct mt_report_data *rdata;
1634 struct mt_application *mt_application = NULL;
1635 struct hid_report *report;
1636 int ret;
1637
1638 list_for_each_entry(report, &hi->reports, hidinput_list) {
1639 rdata = mt_find_report_data(td, report);
1640 if (!rdata) {
1641 hid_err(hdev, "failed to allocate data for report\n");
1642 return -ENOMEM;
1643 }
1644
1645 mt_application = rdata->application;
1646
1647 if (rdata->is_mt_collection) {
1648 ret = mt_touch_input_configured(hdev, hi,
1649 mt_application);
1650 if (ret)
1651 return ret;
1652 }
1653 }
1654
1655 switch (hi->application) {
1656 case HID_GD_KEYBOARD:
1657 case HID_GD_KEYPAD:
1658 case HID_GD_MOUSE:
1659 case HID_DG_TOUCHPAD:
1660 case HID_GD_SYSTEM_CONTROL:
1661 case HID_CP_CONSUMER_CONTROL:
1662 case HID_GD_WIRELESS_RADIO_CTLS:
1663 case HID_GD_SYSTEM_MULTIAXIS:
1664 /* already handled by hid core */
1665 break;
1666 case HID_DG_TOUCHSCREEN:
1667 /* we do not set suffix = "Touchscreen" */
1668 hi->input->name = hdev->name;
1669 break;
1670 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1671 suffix = "Custom Media Keys";
1672 break;
1673 case HID_DG_STYLUS:
1674 /* force BTN_STYLUS to allow tablet matching in udev */
1675 __set_bit(BTN_STYLUS, hi->input->keybit);
1676 break;
1677 default:
1678 suffix = "UNKNOWN";
1679 break;
1680 }
1681
1682 if (suffix) {
1683 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
1684 "%s %s", hdev->name, suffix);
1685 if (!hi->input->name)
1686 return -ENOMEM;
1687 }
1688
1689 return 0;
1690 }
1691
mt_fix_const_field(struct hid_field * field,unsigned int usage)1692 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1693 {
1694 if (field->usage[0].hid != usage ||
1695 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1696 return;
1697
1698 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1699 field->flags |= HID_MAIN_ITEM_VARIABLE;
1700 }
1701
mt_fix_const_fields(struct hid_device * hdev,unsigned int usage)1702 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1703 {
1704 struct hid_report *report;
1705 int i;
1706
1707 list_for_each_entry(report,
1708 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1709 list) {
1710
1711 if (!report->maxfield)
1712 continue;
1713
1714 for (i = 0; i < report->maxfield; i++)
1715 if (report->field[i]->maxusage >= 1)
1716 mt_fix_const_field(report->field[i], usage);
1717 }
1718 }
1719
mt_release_contacts(struct hid_device * hid)1720 static void mt_release_contacts(struct hid_device *hid)
1721 {
1722 struct hid_input *hidinput;
1723 struct mt_application *application;
1724 struct mt_device *td = hid_get_drvdata(hid);
1725
1726 list_for_each_entry(hidinput, &hid->inputs, list) {
1727 struct input_dev *input_dev = hidinput->input;
1728 struct input_mt *mt = input_dev->mt;
1729 int i;
1730
1731 if (mt) {
1732 for (i = 0; i < mt->num_slots; i++) {
1733 input_mt_slot(input_dev, i);
1734 input_mt_report_slot_inactive(input_dev);
1735 }
1736 input_mt_sync_frame(input_dev);
1737 input_sync(input_dev);
1738 }
1739 }
1740
1741 list_for_each_entry(application, &td->applications, list) {
1742 application->num_received = 0;
1743 }
1744 }
1745
mt_expired_timeout(struct timer_list * t)1746 static void mt_expired_timeout(struct timer_list *t)
1747 {
1748 struct mt_device *td = from_timer(td, t, release_timer);
1749 struct hid_device *hdev = td->hdev;
1750
1751 /*
1752 * An input report came in just before we release the sticky fingers,
1753 * it will take care of the sticky fingers.
1754 */
1755 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1756 return;
1757 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1758 mt_release_contacts(hdev);
1759 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1760 }
1761
mt_probe(struct hid_device * hdev,const struct hid_device_id * id)1762 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1763 {
1764 int ret, i;
1765 struct mt_device *td;
1766 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1767
1768 for (i = 0; mt_classes[i].name ; i++) {
1769 if (id->driver_data == mt_classes[i].name) {
1770 mtclass = &(mt_classes[i]);
1771 break;
1772 }
1773 }
1774
1775 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1776 if (!td) {
1777 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1778 return -ENOMEM;
1779 }
1780 td->hdev = hdev;
1781 td->mtclass = *mtclass;
1782 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1783 hid_set_drvdata(hdev, td);
1784
1785 INIT_LIST_HEAD(&td->applications);
1786 INIT_LIST_HEAD(&td->reports);
1787
1788 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1789 td->serial_maybe = true;
1790
1791
1792 /* Orientation is inverted if the X or Y axes are
1793 * flipped, but normalized if both are inverted.
1794 */
1795 if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) &&
1796 !((hdev->quirks & HID_QUIRK_X_INVERT)
1797 && (hdev->quirks & HID_QUIRK_Y_INVERT)))
1798 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT;
1799
1800 /* This allows the driver to correctly support devices
1801 * that emit events over several HID messages.
1802 */
1803 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1804
1805 /*
1806 * This allows the driver to handle different input sensors
1807 * that emits events through different applications on the same HID
1808 * device.
1809 */
1810 hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
1811
1812 if (id->group != HID_GROUP_MULTITOUCH_WIN_8)
1813 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1814
1815 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) {
1816 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP;
1817 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1818 }
1819
1820 timer_setup(&td->release_timer, mt_expired_timeout, 0);
1821
1822 ret = hid_parse(hdev);
1823 if (ret != 0)
1824 return ret;
1825
1826 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1827 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1828
1829 if (hdev->vendor == USB_VENDOR_ID_SIS_TOUCH)
1830 hdev->quirks |= HID_QUIRK_NOGET;
1831
1832 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1833 if (ret)
1834 return ret;
1835
1836 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1837 if (ret)
1838 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1839 hdev->name);
1840
1841 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL);
1842
1843 return 0;
1844 }
1845
mt_suspend(struct hid_device * hdev,pm_message_t state)1846 static int mt_suspend(struct hid_device *hdev, pm_message_t state)
1847 {
1848 struct mt_device *td = hid_get_drvdata(hdev);
1849
1850 /* High latency is desirable for power savings during S3/S0ix */
1851 if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) ||
1852 !hid_hw_may_wakeup(hdev))
1853 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE);
1854 else
1855 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_ALL);
1856
1857 return 0;
1858 }
1859
mt_reset_resume(struct hid_device * hdev)1860 static int mt_reset_resume(struct hid_device *hdev)
1861 {
1862 mt_release_contacts(hdev);
1863 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL);
1864 return 0;
1865 }
1866
mt_resume(struct hid_device * hdev)1867 static int mt_resume(struct hid_device *hdev)
1868 {
1869 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1870 * It should be safe to send it to other devices too.
1871 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1872
1873 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1874
1875 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL);
1876
1877 return 0;
1878 }
1879
mt_remove(struct hid_device * hdev)1880 static void mt_remove(struct hid_device *hdev)
1881 {
1882 struct mt_device *td = hid_get_drvdata(hdev);
1883
1884 del_timer_sync(&td->release_timer);
1885
1886 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1887 hid_hw_stop(hdev);
1888 }
1889
1890 /*
1891 * This list contains only:
1892 * - VID/PID of products not working with the default multitouch handling
1893 * - 2 generic rules.
1894 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1895 */
1896 static const struct hid_device_id mt_devices[] = {
1897
1898 /* 3M panels */
1899 { .driver_data = MT_CLS_3M,
1900 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1901 USB_DEVICE_ID_3M1968) },
1902 { .driver_data = MT_CLS_3M,
1903 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1904 USB_DEVICE_ID_3M2256) },
1905 { .driver_data = MT_CLS_3M,
1906 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1907 USB_DEVICE_ID_3M3266) },
1908
1909 /* Anton devices */
1910 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1911 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1912 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1913
1914 /* Asus T101HA */
1915 { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP,
1916 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1917 USB_VENDOR_ID_ASUSTEK,
1918 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) },
1919
1920 /* Asus T304UA */
1921 { .driver_data = MT_CLS_ASUS,
1922 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1923 USB_VENDOR_ID_ASUSTEK,
1924 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
1925
1926 /* Atmel panels */
1927 { .driver_data = MT_CLS_SERIAL,
1928 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1929 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1930
1931 /* Baanto multitouch devices */
1932 { .driver_data = MT_CLS_NSMU,
1933 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1934 USB_DEVICE_ID_BAANTO_MT_190W2) },
1935
1936 /* Cando panels */
1937 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1938 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1939 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1940 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1941 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1942 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1943
1944 /* Chunghwa Telecom touch panels */
1945 { .driver_data = MT_CLS_NSMU,
1946 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1947 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1948
1949 /* CJTouch panels */
1950 { .driver_data = MT_CLS_NSMU,
1951 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1952 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1953 { .driver_data = MT_CLS_NSMU,
1954 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1955 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1956
1957 /* CVTouch panels */
1958 { .driver_data = MT_CLS_NSMU,
1959 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1960 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1961
1962 /* eGalax devices (SAW) */
1963 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1964 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1965 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) },
1966
1967 /* eGalax devices (resistive) */
1968 { .driver_data = MT_CLS_EGALAX,
1969 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1970 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1971 { .driver_data = MT_CLS_EGALAX,
1972 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1973 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1974
1975 /* eGalax devices (capacitive) */
1976 { .driver_data = MT_CLS_EGALAX_SERIAL,
1977 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1978 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1979 { .driver_data = MT_CLS_EGALAX,
1980 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1981 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1982 { .driver_data = MT_CLS_EGALAX_SERIAL,
1983 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1984 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1985 { .driver_data = MT_CLS_EGALAX_SERIAL,
1986 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1987 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1988 { .driver_data = MT_CLS_EGALAX_SERIAL,
1989 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1990 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1991 { .driver_data = MT_CLS_EGALAX_SERIAL,
1992 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1993 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1994 { .driver_data = MT_CLS_EGALAX,
1995 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1996 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1997 { .driver_data = MT_CLS_EGALAX,
1998 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1999 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
2000 { .driver_data = MT_CLS_EGALAX_SERIAL,
2001 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2002 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
2003 { .driver_data = MT_CLS_EGALAX,
2004 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
2005 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
2006 { .driver_data = MT_CLS_EGALAX,
2007 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
2008 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
2009 { .driver_data = MT_CLS_EGALAX,
2010 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2011 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
2012 { .driver_data = MT_CLS_EGALAX,
2013 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2014 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
2015 { .driver_data = MT_CLS_EGALAX_SERIAL,
2016 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2017 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
2018 { .driver_data = MT_CLS_EGALAX_SERIAL,
2019 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2020 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
2021 { .driver_data = MT_CLS_EGALAX_SERIAL,
2022 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2023 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
2024 { .driver_data = MT_CLS_EGALAX,
2025 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2026 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) },
2027
2028 /* Elan devices */
2029 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2030 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2031 USB_VENDOR_ID_ELAN, 0x313a) },
2032
2033 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2034 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2035 USB_VENDOR_ID_ELAN, 0x3148) },
2036
2037 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
2038 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2039 USB_VENDOR_ID_ELAN, 0x32ae) },
2040
2041 /* Elitegroup panel */
2042 { .driver_data = MT_CLS_SERIAL,
2043 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
2044 USB_DEVICE_ID_ELITEGROUP_05D8) },
2045
2046 /* Flatfrog Panels */
2047 { .driver_data = MT_CLS_FLATFROG,
2048 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
2049 USB_DEVICE_ID_MULTITOUCH_3200) },
2050
2051 /* FocalTech Panels */
2052 { .driver_data = MT_CLS_SERIAL,
2053 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
2054 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
2055
2056 /* GeneralTouch panel */
2057 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
2058 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2059 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
2060 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2061 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2062 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
2063 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
2064 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2065 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
2066 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2067 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2068 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
2069 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2070 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2071 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
2072 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2073 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2074 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
2075 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2076 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2077 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
2078
2079 /* Gametel game controller */
2080 { .driver_data = MT_CLS_NSMU,
2081 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
2082 USB_DEVICE_ID_GAMETEL_MT_MODE) },
2083
2084 /* Goodix GT7868Q devices */
2085 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
2086 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX,
2087 I2C_DEVICE_ID_GOODIX_01E8) },
2088 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
2089 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX,
2090 I2C_DEVICE_ID_GOODIX_01E9) },
2091
2092 /* GoodTouch panels */
2093 { .driver_data = MT_CLS_NSMU,
2094 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
2095 USB_DEVICE_ID_GOODTOUCH_000f) },
2096
2097 /* Hanvon panels */
2098 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
2099 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
2100 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
2101
2102 /* HONOR GLO-GXXX panel */
2103 { .driver_data = MT_CLS_VTL,
2104 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2105 0x347d, 0x7853) },
2106
2107 /* HONOR MagicBook Art 14 touchpad */
2108 { .driver_data = MT_CLS_VTL,
2109 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2110 0x35cc, 0x0104) },
2111
2112 /* Ilitek dual touch panel */
2113 { .driver_data = MT_CLS_NSMU,
2114 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
2115 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
2116
2117 /* LG Melfas panel */
2118 { .driver_data = MT_CLS_LG,
2119 HID_USB_DEVICE(USB_VENDOR_ID_LG,
2120 USB_DEVICE_ID_LG_MELFAS_MT) },
2121 { .driver_data = MT_CLS_LG,
2122 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC,
2123 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) },
2124
2125 /* Lenovo X1 TAB Gen 2 */
2126 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2127 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2128 USB_VENDOR_ID_LENOVO,
2129 USB_DEVICE_ID_LENOVO_X1_TAB) },
2130
2131 /* Lenovo X1 TAB Gen 3 */
2132 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2133 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2134 USB_VENDOR_ID_LENOVO,
2135 USB_DEVICE_ID_LENOVO_X1_TAB3) },
2136
2137 /* Lenovo X12 TAB Gen 1 */
2138 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
2139 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2140 USB_VENDOR_ID_LENOVO,
2141 USB_DEVICE_ID_LENOVO_X12_TAB) },
2142
2143 /* Lenovo X12 TAB Gen 2 */
2144 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
2145 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2146 USB_VENDOR_ID_LENOVO,
2147 USB_DEVICE_ID_LENOVO_X12_TAB2) },
2148
2149 /* Logitech devices */
2150 { .driver_data = MT_CLS_NSMU,
2151 HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH_WIN_8,
2152 USB_VENDOR_ID_LOGITECH,
2153 USB_DEVICE_ID_LOGITECH_CASA_TOUCHPAD) },
2154 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
2155 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2156 USB_VENDOR_ID_LOGITECH,
2157 USB_DEVICE_ID_LOGITECH_BOLT_RECEIVER) },
2158
2159 /* MosArt panels */
2160 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2161 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
2162 USB_DEVICE_ID_ASUS_T91MT)},
2163 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2164 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
2165 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
2166 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2167 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
2168 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
2169
2170 /* Novatek Panel */
2171 { .driver_data = MT_CLS_NSMU,
2172 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
2173 USB_DEVICE_ID_NOVATEK_PCT) },
2174
2175 /* Ntrig Panel */
2176 { .driver_data = MT_CLS_NSMU,
2177 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2178 USB_VENDOR_ID_NTRIG, 0x1b05) },
2179
2180 /* Panasonic panels */
2181 { .driver_data = MT_CLS_PANASONIC,
2182 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
2183 USB_DEVICE_ID_PANABOARD_UBT780) },
2184 { .driver_data = MT_CLS_PANASONIC,
2185 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
2186 USB_DEVICE_ID_PANABOARD_UBT880) },
2187
2188 /* PixArt optical touch screen */
2189 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2190 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2191 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
2192 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2193 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2194 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
2195 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2196 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2197 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
2198
2199 /* PixCir-based panels */
2200 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
2201 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
2202 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
2203
2204 /* Quanta-based panels */
2205 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
2206 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
2207 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
2208
2209 /* Razer touchpads */
2210 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH,
2211 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2212 USB_VENDOR_ID_SYNAPTICS, 0x8323) },
2213
2214 /* Smart Tech panels */
2215 { .driver_data = MT_CLS_SMART_TECH,
2216 MT_USB_DEVICE(0x0b8c, 0x0092)},
2217
2218 /* Stantum panels */
2219 { .driver_data = MT_CLS_CONFIDENCE,
2220 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
2221 USB_DEVICE_ID_MTP_STM)},
2222
2223 /* Synaptics devices */
2224 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2225 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2226 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) },
2227
2228 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2229 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2230 USB_VENDOR_ID_SYNAPTICS, 0xcddc) },
2231
2232 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2233 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2234 USB_VENDOR_ID_SYNAPTICS, 0xce08) },
2235
2236 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2237 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2238 USB_VENDOR_ID_SYNAPTICS, 0xce09) },
2239
2240 /* TopSeed panels */
2241 { .driver_data = MT_CLS_TOPSEED,
2242 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
2243 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
2244
2245 /* Touch International panels */
2246 { .driver_data = MT_CLS_NSMU,
2247 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
2248 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
2249
2250 /* Unitec panels */
2251 { .driver_data = MT_CLS_NSMU,
2252 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2253 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
2254 { .driver_data = MT_CLS_NSMU,
2255 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2256 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
2257
2258 /* VTL panels */
2259 { .driver_data = MT_CLS_VTL,
2260 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
2261 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
2262
2263 /* Winbond Electronics Corp. */
2264 { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS,
2265 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
2266 USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) },
2267
2268 /* Wistron panels */
2269 { .driver_data = MT_CLS_NSMU,
2270 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
2271 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
2272
2273 /* XAT */
2274 { .driver_data = MT_CLS_NSMU,
2275 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
2276 USB_DEVICE_ID_XAT_CSR) },
2277
2278 /* Xiroku */
2279 { .driver_data = MT_CLS_NSMU,
2280 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2281 USB_DEVICE_ID_XIROKU_SPX) },
2282 { .driver_data = MT_CLS_NSMU,
2283 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2284 USB_DEVICE_ID_XIROKU_MPX) },
2285 { .driver_data = MT_CLS_NSMU,
2286 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2287 USB_DEVICE_ID_XIROKU_CSR) },
2288 { .driver_data = MT_CLS_NSMU,
2289 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2290 USB_DEVICE_ID_XIROKU_SPX1) },
2291 { .driver_data = MT_CLS_NSMU,
2292 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2293 USB_DEVICE_ID_XIROKU_MPX1) },
2294 { .driver_data = MT_CLS_NSMU,
2295 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2296 USB_DEVICE_ID_XIROKU_CSR1) },
2297 { .driver_data = MT_CLS_NSMU,
2298 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2299 USB_DEVICE_ID_XIROKU_SPX2) },
2300 { .driver_data = MT_CLS_NSMU,
2301 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2302 USB_DEVICE_ID_XIROKU_MPX2) },
2303 { .driver_data = MT_CLS_NSMU,
2304 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2305 USB_DEVICE_ID_XIROKU_CSR2) },
2306
2307 /* Google MT devices */
2308 { .driver_data = MT_CLS_GOOGLE,
2309 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
2310 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
2311 { .driver_data = MT_CLS_GOOGLE,
2312 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE,
2313 USB_DEVICE_ID_GOOGLE_WHISKERS) },
2314
2315 /* sis */
2316 { .driver_data = MT_CLS_SIS,
2317 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_SIS_TOUCH,
2318 HID_ANY_ID) },
2319
2320 /* Hantick */
2321 { .driver_data = MT_CLS_NSMU,
2322 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2323 I2C_VENDOR_ID_HANTICK, I2C_PRODUCT_ID_HANTICK_5288) },
2324
2325 /* Generic MT device */
2326 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
2327
2328 /* Generic Win 8 certified MT device */
2329 { .driver_data = MT_CLS_WIN_8,
2330 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
2331 HID_ANY_ID, HID_ANY_ID) },
2332 { }
2333 };
2334 MODULE_DEVICE_TABLE(hid, mt_devices);
2335
2336 static const struct hid_usage_id mt_grabbed_usages[] = {
2337 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
2338 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
2339 };
2340
2341 static struct hid_driver mt_driver = {
2342 .name = "hid-multitouch",
2343 .id_table = mt_devices,
2344 .probe = mt_probe,
2345 .remove = mt_remove,
2346 .input_mapping = mt_input_mapping,
2347 .input_mapped = mt_input_mapped,
2348 .input_configured = mt_input_configured,
2349 .feature_mapping = mt_feature_mapping,
2350 .usage_table = mt_grabbed_usages,
2351 .event = mt_event,
2352 .report_fixup = mt_report_fixup,
2353 .report = mt_report,
2354 .suspend = pm_ptr(mt_suspend),
2355 .reset_resume = pm_ptr(mt_reset_resume),
2356 .resume = pm_ptr(mt_resume),
2357 };
2358 module_hid_driver(mt_driver);
2359