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 #include "hid-haptic.h"
53
54 /* quirks to control the device */
55 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0)
56 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1)
57 #define MT_QUIRK_CYPRESS BIT(2)
58 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3)
59 #define MT_QUIRK_ALWAYS_VALID BIT(4)
60 #define MT_QUIRK_VALID_IS_INRANGE BIT(5)
61 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6)
62 #define MT_QUIRK_CONFIDENCE BIT(7)
63 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8)
64 #define MT_QUIRK_NO_AREA BIT(9)
65 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10)
66 #define MT_QUIRK_HOVERING BIT(11)
67 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12)
68 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13)
69 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14)
70 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15)
71 #define MT_QUIRK_STICKY_FINGERS BIT(16)
72 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17)
73 #define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18)
74 #define MT_QUIRK_SEPARATE_APP_REPORT BIT(19)
75 #define MT_QUIRK_FORCE_MULTI_INPUT BIT(20)
76 #define MT_QUIRK_DISABLE_WAKEUP BIT(21)
77 #define MT_QUIRK_ORIENTATION_INVERT BIT(22)
78 #define MT_QUIRK_APPLE_TOUCHBAR BIT(23)
79 #define MT_QUIRK_YOGABOOK9I BIT(24)
80 #define MT_QUIRK_KEEP_LATENCY_ON_CLOSE BIT(25)
81
82 #define MT_INPUTMODE_TOUCHSCREEN 0x02
83 #define MT_INPUTMODE_TOUCHPAD 0x03
84
85 #define MT_BUTTONTYPE_CLICKPAD 0
86 #define MT_BUTTONTYPE_PRESSUREPAD 1
87
88 enum latency_mode {
89 HID_LATENCY_NORMAL = 0,
90 HID_LATENCY_HIGH = 1,
91 };
92
93 enum report_mode {
94 TOUCHPAD_REPORT_NONE = 0,
95 TOUCHPAD_REPORT_BUTTONS = BIT(0),
96 TOUCHPAD_REPORT_CONTACTS = BIT(1),
97 TOUCHPAD_REPORT_ALL = TOUCHPAD_REPORT_BUTTONS | TOUCHPAD_REPORT_CONTACTS,
98 };
99
100 #define MT_IO_SLOTS_MASK GENMASK(7, 0) /* reserve first 8 bits for slot tracking */
101 #define MT_IO_FLAGS_RUNNING 32
102
103 static const bool mtrue = true; /* default for true */
104 static const bool mfalse; /* default for false */
105 static const __s32 mzero; /* default for 0 */
106
107 #define DEFAULT_TRUE ((void *)&mtrue)
108 #define DEFAULT_FALSE ((void *)&mfalse)
109 #define DEFAULT_ZERO ((void *)&mzero)
110
111 struct mt_usages {
112 struct list_head list;
113 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a;
114 __s32 *contactid; /* the device ContactID assigned to this slot */
115 bool *tip_state; /* is the touch valid? */
116 bool *inrange_state; /* is the finger in proximity of the sensor? */
117 bool *confidence_state; /* is the touch made by a finger? */
118 };
119
120 struct mt_application {
121 struct list_head list;
122 unsigned int application;
123 unsigned int report_id;
124 struct list_head mt_usages; /* mt usages list */
125
126 __s32 quirks;
127
128 __s32 *scantime; /* scantime reported */
129 __s32 scantime_logical_max; /* max value for raw scantime */
130
131 __s32 *raw_cc; /* contact count in the report */
132 int left_button_state; /* left button state */
133 unsigned int mt_flags; /* flags to pass to input-mt */
134
135 unsigned long *pending_palm_slots; /* slots where we reported palm
136 * and need to release */
137
138 __u8 num_received; /* how many contacts we received */
139 __u8 num_expected; /* expected last contact index */
140 __u8 buttons_count; /* number of physical buttons per touchpad */
141 __u8 touches_by_report; /* how many touches are present in one report:
142 * 1 means we should use a serial protocol
143 * > 1 means hybrid (multitouch) protocol
144 */
145
146 unsigned long jiffies; /* the frame's jiffies */
147 int timestamp; /* the timestamp to be sent */
148 int prev_scantime; /* scantime reported previously */
149
150 bool have_contact_count;
151 };
152
153 struct mt_class {
154 __s32 name; /* MT_CLS */
155 __s32 quirks;
156 __s32 sn_move; /* Signal/noise ratio for move events */
157 __s32 sn_width; /* Signal/noise ratio for width events */
158 __s32 sn_height; /* Signal/noise ratio for height events */
159 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
160 __u8 maxcontacts;
161 bool is_indirect; /* true for touchpads */
162 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
163 };
164
165 struct mt_report_data {
166 struct list_head list;
167 struct hid_report *report;
168 struct mt_application *application;
169 bool is_mt_collection;
170 };
171
172 struct mt_device {
173 struct mt_class mtclass; /* our mt device class */
174 struct timer_list release_timer; /* to release sticky fingers */
175 struct hid_haptic_device *haptic; /* haptic related configuration */
176 struct hid_device *hdev; /* hid_device we're attached to */
177 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_RUNNING)
178 * first 8 bits are reserved for keeping the slot
179 * states, this is fine because we only support up
180 * to 250 slots (MT_MAX_MAXCONTACT)
181 */
182 __u8 inputmode_value; /* InputMode HID feature value */
183 __u8 maxcontacts;
184 bool is_buttonpad; /* is this device a button pad? */
185 bool is_pressurepad; /* is this device a pressurepad? */
186 bool is_haptic_touchpad; /* is this device a haptic touchpad? */
187 bool serial_maybe; /* need to check for serial protocol */
188
189 struct list_head applications;
190 struct list_head reports;
191 };
192
193 static void mt_post_parse_default_settings(struct mt_device *td,
194 struct mt_application *app);
195 static void mt_post_parse(struct mt_device *td, struct mt_application *app);
196
197 /* classes of device behavior */
198 #define MT_CLS_DEFAULT 0x0001
199
200 #define MT_CLS_SERIAL 0x0002
201 #define MT_CLS_CONFIDENCE 0x0003
202 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
203 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
204 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
205 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
206 /* reserved 0x0008 */
207 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
208 #define MT_CLS_NSMU 0x000a
209 /* reserved 0x0010 */
210 /* reserved 0x0011 */
211 #define MT_CLS_WIN_8 0x0012
212 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
213 /* reserved 0x0014 */
214 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015
215 #define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016
216 #define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017
217 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU 0x0018
218 #define MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE 0x0019
219
220 /* vendor specific classes */
221 #define MT_CLS_3M 0x0101
222 /* reserved 0x0102 */
223 #define MT_CLS_EGALAX 0x0103
224 #define MT_CLS_EGALAX_SERIAL 0x0104
225 #define MT_CLS_TOPSEED 0x0105
226 #define MT_CLS_PANASONIC 0x0106
227 #define MT_CLS_FLATFROG 0x0107
228 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
229 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
230 #define MT_CLS_LG 0x010a
231 #define MT_CLS_ASUS 0x010b
232 #define MT_CLS_VTL 0x0110
233 #define MT_CLS_GOOGLE 0x0111
234 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112
235 #define MT_CLS_SMART_TECH 0x0113
236 #define MT_CLS_APPLE_TOUCHBAR 0x0114
237 #define MT_CLS_YOGABOOK9I 0x0115
238 #define MT_CLS_EGALAX_P80H84 0x0116
239 #define MT_CLS_SIS 0x0457
240
241 #define MT_DEFAULT_MAXCONTACT 10
242 #define MT_MAX_MAXCONTACT 250
243
244 /*
245 * Resync device and local timestamps after that many microseconds without
246 * receiving data.
247 */
248 #define MAX_TIMESTAMP_INTERVAL 1000000
249
250 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
251 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
252
253 /*
254 * these device-dependent functions determine what slot corresponds
255 * to a valid contact that was just read.
256 */
257
cypress_compute_slot(struct mt_application * application,struct mt_usages * slot)258 static int cypress_compute_slot(struct mt_application *application,
259 struct mt_usages *slot)
260 {
261 if (*slot->contactid != 0 || application->num_received == 0)
262 return *slot->contactid;
263 else
264 return -1;
265 }
266
267 static const struct mt_class mt_classes[] = {
268 { .name = MT_CLS_DEFAULT,
269 .quirks = MT_QUIRK_ALWAYS_VALID |
270 MT_QUIRK_CONTACT_CNT_ACCURATE },
271 { .name = MT_CLS_NSMU,
272 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
273 { .name = MT_CLS_SERIAL,
274 .quirks = MT_QUIRK_ALWAYS_VALID},
275 { .name = MT_CLS_CONFIDENCE,
276 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
277 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
278 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
279 MT_QUIRK_SLOT_IS_CONTACTID },
280 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
281 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
282 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
283 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
284 .quirks = MT_QUIRK_VALID_IS_INRANGE |
285 MT_QUIRK_SLOT_IS_CONTACTID,
286 .maxcontacts = 2 },
287 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
288 .quirks = MT_QUIRK_VALID_IS_INRANGE |
289 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
290 .maxcontacts = 2 },
291 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
292 .quirks = MT_QUIRK_VALID_IS_INRANGE |
293 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
294 { .name = MT_CLS_WIN_8,
295 .quirks = MT_QUIRK_ALWAYS_VALID |
296 MT_QUIRK_IGNORE_DUPLICATES |
297 MT_QUIRK_HOVERING |
298 MT_QUIRK_CONTACT_CNT_ACCURATE |
299 MT_QUIRK_STICKY_FINGERS |
300 MT_QUIRK_WIN8_PTP_BUTTONS,
301 .export_all_inputs = true },
302 { .name = MT_CLS_EXPORT_ALL_INPUTS,
303 .quirks = MT_QUIRK_ALWAYS_VALID |
304 MT_QUIRK_CONTACT_CNT_ACCURATE,
305 .export_all_inputs = true },
306 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
307 .quirks = MT_QUIRK_ALWAYS_VALID |
308 MT_QUIRK_IGNORE_DUPLICATES |
309 MT_QUIRK_HOVERING |
310 MT_QUIRK_CONTACT_CNT_ACCURATE |
311 MT_QUIRK_STICKY_FINGERS |
312 MT_QUIRK_WIN8_PTP_BUTTONS |
313 MT_QUIRK_FORCE_MULTI_INPUT,
314 .export_all_inputs = true },
315 { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
316 .quirks = MT_QUIRK_IGNORE_DUPLICATES |
317 MT_QUIRK_HOVERING |
318 MT_QUIRK_CONTACT_CNT_ACCURATE |
319 MT_QUIRK_STICKY_FINGERS |
320 MT_QUIRK_WIN8_PTP_BUTTONS |
321 MT_QUIRK_FORCE_MULTI_INPUT |
322 MT_QUIRK_NOT_SEEN_MEANS_UP,
323 .export_all_inputs = true },
324 { .name = MT_CLS_WIN_8_DISABLE_WAKEUP,
325 .quirks = MT_QUIRK_ALWAYS_VALID |
326 MT_QUIRK_IGNORE_DUPLICATES |
327 MT_QUIRK_HOVERING |
328 MT_QUIRK_CONTACT_CNT_ACCURATE |
329 MT_QUIRK_STICKY_FINGERS |
330 MT_QUIRK_WIN8_PTP_BUTTONS |
331 MT_QUIRK_DISABLE_WAKEUP,
332 .export_all_inputs = true },
333 { .name = MT_CLS_WIN_8_NO_STICKY_FINGERS,
334 .quirks = MT_QUIRK_ALWAYS_VALID |
335 MT_QUIRK_IGNORE_DUPLICATES |
336 MT_QUIRK_HOVERING |
337 MT_QUIRK_CONTACT_CNT_ACCURATE |
338 MT_QUIRK_WIN8_PTP_BUTTONS,
339 .export_all_inputs = true },
340 { .name = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE,
341 .quirks = MT_QUIRK_ALWAYS_VALID |
342 MT_QUIRK_IGNORE_DUPLICATES |
343 MT_QUIRK_HOVERING |
344 MT_QUIRK_CONTACT_CNT_ACCURATE |
345 MT_QUIRK_STICKY_FINGERS |
346 MT_QUIRK_WIN8_PTP_BUTTONS |
347 MT_QUIRK_KEEP_LATENCY_ON_CLOSE,
348 .export_all_inputs = true },
349
350 /*
351 * vendor specific classes
352 */
353 { .name = MT_CLS_3M,
354 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
355 MT_QUIRK_SLOT_IS_CONTACTID |
356 MT_QUIRK_TOUCH_SIZE_SCALING,
357 .sn_move = 2048,
358 .sn_width = 128,
359 .sn_height = 128,
360 .maxcontacts = 60,
361 },
362 { .name = MT_CLS_EGALAX,
363 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
364 MT_QUIRK_VALID_IS_INRANGE,
365 .sn_move = 4096,
366 .sn_pressure = 32,
367 },
368 { .name = MT_CLS_EGALAX_SERIAL,
369 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
370 MT_QUIRK_ALWAYS_VALID,
371 .sn_move = 4096,
372 .sn_pressure = 32,
373 },
374 { .name = MT_CLS_TOPSEED,
375 .quirks = MT_QUIRK_ALWAYS_VALID,
376 .is_indirect = true,
377 .maxcontacts = 2,
378 },
379 { .name = MT_CLS_PANASONIC,
380 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
381 .maxcontacts = 4 },
382 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
383 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
384 MT_QUIRK_VALID_IS_INRANGE |
385 MT_QUIRK_SLOT_IS_CONTACTID,
386 .maxcontacts = 2
387 },
388 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
389 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
390 MT_QUIRK_SLOT_IS_CONTACTID
391 },
392
393 { .name = MT_CLS_FLATFROG,
394 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
395 MT_QUIRK_NO_AREA,
396 .sn_move = 2048,
397 .maxcontacts = 40,
398 },
399 { .name = MT_CLS_LG,
400 .quirks = MT_QUIRK_ALWAYS_VALID |
401 MT_QUIRK_FIX_CONST_CONTACT_ID |
402 MT_QUIRK_IGNORE_DUPLICATES |
403 MT_QUIRK_HOVERING |
404 MT_QUIRK_CONTACT_CNT_ACCURATE },
405 { .name = MT_CLS_ASUS,
406 .quirks = MT_QUIRK_ALWAYS_VALID |
407 MT_QUIRK_CONTACT_CNT_ACCURATE |
408 MT_QUIRK_ASUS_CUSTOM_UP },
409 { .name = MT_CLS_VTL,
410 .quirks = MT_QUIRK_ALWAYS_VALID |
411 MT_QUIRK_CONTACT_CNT_ACCURATE |
412 MT_QUIRK_STICKY_FINGERS |
413 MT_QUIRK_FORCE_GET_FEATURE,
414 },
415 { .name = MT_CLS_GOOGLE,
416 .quirks = MT_QUIRK_ALWAYS_VALID |
417 MT_QUIRK_CONTACT_CNT_ACCURATE |
418 MT_QUIRK_SLOT_IS_CONTACTID |
419 MT_QUIRK_HOVERING
420 },
421 { .name = MT_CLS_RAZER_BLADE_STEALTH,
422 .quirks = MT_QUIRK_ALWAYS_VALID |
423 MT_QUIRK_IGNORE_DUPLICATES |
424 MT_QUIRK_HOVERING |
425 MT_QUIRK_CONTACT_CNT_ACCURATE |
426 MT_QUIRK_WIN8_PTP_BUTTONS,
427 },
428 { .name = MT_CLS_SMART_TECH,
429 .quirks = MT_QUIRK_ALWAYS_VALID |
430 MT_QUIRK_IGNORE_DUPLICATES |
431 MT_QUIRK_CONTACT_CNT_ACCURATE |
432 MT_QUIRK_SEPARATE_APP_REPORT,
433 },
434 { .name = MT_CLS_APPLE_TOUCHBAR,
435 .quirks = MT_QUIRK_HOVERING |
436 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE |
437 MT_QUIRK_APPLE_TOUCHBAR,
438 .maxcontacts = 11,
439 },
440 { .name = MT_CLS_SIS,
441 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
442 MT_QUIRK_ALWAYS_VALID |
443 MT_QUIRK_CONTACT_CNT_ACCURATE,
444 },
445 { .name = MT_CLS_YOGABOOK9I,
446 .quirks = MT_QUIRK_ALWAYS_VALID |
447 MT_QUIRK_FORCE_MULTI_INPUT |
448 MT_QUIRK_SEPARATE_APP_REPORT |
449 MT_QUIRK_HOVERING |
450 MT_QUIRK_YOGABOOK9I,
451 .export_all_inputs = true
452 },
453 { .name = MT_CLS_EGALAX_P80H84,
454 .quirks = MT_QUIRK_ALWAYS_VALID |
455 MT_QUIRK_IGNORE_DUPLICATES |
456 MT_QUIRK_CONTACT_CNT_ACCURATE,
457 },
458 { }
459 };
460
mt_show_quirks(struct device * dev,struct device_attribute * attr,char * buf)461 static ssize_t mt_show_quirks(struct device *dev,
462 struct device_attribute *attr,
463 char *buf)
464 {
465 struct hid_device *hdev = to_hid_device(dev);
466 struct mt_device *td = hid_get_drvdata(hdev);
467
468 return sprintf(buf, "%u\n", td->mtclass.quirks);
469 }
470
mt_set_quirks(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)471 static ssize_t mt_set_quirks(struct device *dev,
472 struct device_attribute *attr,
473 const char *buf, size_t count)
474 {
475 struct hid_device *hdev = to_hid_device(dev);
476 struct mt_device *td = hid_get_drvdata(hdev);
477 struct mt_application *application;
478
479 unsigned long val;
480
481 if (kstrtoul(buf, 0, &val))
482 return -EINVAL;
483
484 td->mtclass.quirks = val;
485
486 list_for_each_entry(application, &td->applications, list) {
487 application->quirks = val;
488 if (!application->have_contact_count)
489 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
490 }
491
492 return count;
493 }
494
495 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
496
497 static struct attribute *sysfs_attrs[] = {
498 &dev_attr_quirks.attr,
499 NULL
500 };
501
502 static const struct attribute_group mt_attribute_group = {
503 .attrs = sysfs_attrs
504 };
505
mt_get_feature(struct hid_device * hdev,struct hid_report * report)506 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
507 {
508 int ret;
509 u32 size = hid_report_len(report);
510 u8 *buf;
511
512 /*
513 * Do not fetch the feature report if the device has been explicitly
514 * marked as non-capable.
515 */
516 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS)
517 return;
518
519 buf = hid_alloc_report_buf(report, GFP_KERNEL);
520 if (!buf)
521 return;
522
523 ret = hid_hw_raw_request(hdev, report->id, buf, size,
524 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
525 if (ret < 0) {
526 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
527 report->id);
528 } else {
529 /* The report ID in the request and the response should match */
530 if (report->id != buf[0]) {
531 hid_err(hdev, "Returned feature report did not match the request\n");
532 goto free;
533 }
534
535 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
536 size, 0);
537 if (ret)
538 dev_warn(&hdev->dev, "failed to report feature\n");
539 }
540
541 free:
542 kfree(buf);
543 }
544
mt_feature_mapping(struct hid_device * hdev,struct hid_field * field,struct hid_usage * usage)545 static void mt_feature_mapping(struct hid_device *hdev,
546 struct hid_field *field, struct hid_usage *usage)
547 {
548 struct mt_device *td = hid_get_drvdata(hdev);
549
550 switch (usage->hid) {
551 case HID_DG_CONTACTMAX:
552 mt_get_feature(hdev, field->report);
553
554 td->maxcontacts = field->value[0];
555 if (!td->maxcontacts &&
556 field->logical_maximum <= MT_MAX_MAXCONTACT)
557 td->maxcontacts = field->logical_maximum;
558 if (td->mtclass.maxcontacts)
559 /* check if the maxcontacts is given by the class */
560 td->maxcontacts = td->mtclass.maxcontacts;
561
562 break;
563 case HID_DG_BUTTONTYPE:
564 if (usage->usage_index >= field->report_count) {
565 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
566 break;
567 }
568
569 mt_get_feature(hdev, field->report);
570 switch (field->value[usage->usage_index]) {
571 case MT_BUTTONTYPE_CLICKPAD:
572 td->is_buttonpad = true;
573 break;
574 case MT_BUTTONTYPE_PRESSUREPAD:
575 td->is_pressurepad = true;
576 break;
577 }
578
579 break;
580 case 0xff0000c5:
581 /* Retrieve the Win8 blob once to enable some devices */
582 if (usage->usage_index == 0)
583 mt_get_feature(hdev, field->report);
584 break;
585 }
586
587 hid_haptic_feature_mapping(hdev, td->haptic, field, usage);
588 }
589
set_abs(struct input_dev * input,unsigned int code,struct hid_field * field,int snratio)590 static void set_abs(struct input_dev *input, unsigned int code,
591 struct hid_field *field, int snratio)
592 {
593 int fmin = field->logical_minimum;
594 int fmax = field->logical_maximum;
595 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
596 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
597 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
598 }
599
mt_allocate_usage(struct hid_device * hdev,struct mt_application * application)600 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev,
601 struct mt_application *application)
602 {
603 struct mt_usages *usage;
604
605 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL);
606 if (!usage)
607 return NULL;
608
609 /* set some defaults so we do not need to check for null pointers */
610 usage->x = DEFAULT_ZERO;
611 usage->y = DEFAULT_ZERO;
612 usage->cx = DEFAULT_ZERO;
613 usage->cy = DEFAULT_ZERO;
614 usage->p = DEFAULT_ZERO;
615 usage->w = DEFAULT_ZERO;
616 usage->h = DEFAULT_ZERO;
617 usage->a = DEFAULT_ZERO;
618 usage->contactid = DEFAULT_ZERO;
619 usage->tip_state = DEFAULT_FALSE;
620 usage->inrange_state = DEFAULT_FALSE;
621 usage->confidence_state = DEFAULT_TRUE;
622
623 list_add_tail(&usage->list, &application->mt_usages);
624
625 return usage;
626 }
627
mt_allocate_application(struct mt_device * td,struct hid_report * report)628 static struct mt_application *mt_allocate_application(struct mt_device *td,
629 struct hid_report *report)
630 {
631 unsigned int application = report->application;
632 struct mt_application *mt_application;
633
634 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application),
635 GFP_KERNEL);
636 if (!mt_application)
637 return NULL;
638
639 mt_application->application = application;
640 INIT_LIST_HEAD(&mt_application->mt_usages);
641
642 if (application == HID_DG_TOUCHSCREEN)
643 mt_application->mt_flags |= INPUT_MT_DIRECT;
644
645 /*
646 * Model touchscreens providing buttons as touchpads.
647 */
648 if (application == HID_DG_TOUCHPAD) {
649 mt_application->mt_flags |= INPUT_MT_POINTER;
650 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
651 }
652
653 mt_application->scantime = DEFAULT_ZERO;
654 mt_application->raw_cc = DEFAULT_ZERO;
655 mt_application->quirks = td->mtclass.quirks;
656 mt_application->report_id = report->id;
657
658 list_add_tail(&mt_application->list, &td->applications);
659
660 return mt_application;
661 }
662
mt_find_application(struct mt_device * td,struct hid_report * report)663 static struct mt_application *mt_find_application(struct mt_device *td,
664 struct hid_report *report)
665 {
666 unsigned int application = report->application;
667 struct mt_application *tmp, *mt_application = NULL;
668
669 list_for_each_entry(tmp, &td->applications, list) {
670 if (application == tmp->application) {
671 if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) ||
672 tmp->report_id == report->id) {
673 mt_application = tmp;
674 break;
675 }
676 }
677 }
678
679 if (!mt_application)
680 mt_application = mt_allocate_application(td, report);
681
682 return mt_application;
683 }
684
mt_allocate_report_data(struct mt_device * td,struct hid_report * report)685 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td,
686 struct hid_report *report)
687 {
688 struct mt_class *cls = &td->mtclass;
689 struct mt_report_data *rdata;
690 struct hid_field *field;
691 int r, n;
692
693 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL);
694 if (!rdata)
695 return NULL;
696
697 rdata->report = report;
698 rdata->application = mt_find_application(td, report);
699
700 if (!rdata->application) {
701 devm_kfree(&td->hdev->dev, rdata);
702 return NULL;
703 }
704
705 for (r = 0; r < report->maxfield; r++) {
706 field = report->field[r];
707
708 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
709 continue;
710
711 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) {
712 for (n = 0; n < field->report_count; n++) {
713 unsigned int hid = field->usage[n].hid;
714
715 if (hid == HID_DG_CONTACTID ||
716 (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR &&
717 hid == HID_DG_TRANSDUCER_INDEX)) {
718 rdata->is_mt_collection = true;
719 break;
720 }
721 }
722 }
723 }
724
725 list_add_tail(&rdata->list, &td->reports);
726
727 return rdata;
728 }
729
mt_find_report_data(struct mt_device * td,struct hid_report * report)730 static struct mt_report_data *mt_find_report_data(struct mt_device *td,
731 struct hid_report *report)
732 {
733 struct mt_report_data *tmp, *rdata = NULL;
734
735 list_for_each_entry(tmp, &td->reports, list) {
736 if (report == tmp->report) {
737 rdata = tmp;
738 break;
739 }
740 }
741
742 if (!rdata)
743 rdata = mt_allocate_report_data(td, report);
744
745 return rdata;
746 }
747
mt_store_field(struct hid_device * hdev,struct mt_application * application,__s32 * value,size_t offset)748 static void mt_store_field(struct hid_device *hdev,
749 struct mt_application *application,
750 __s32 *value,
751 size_t offset)
752 {
753 struct mt_usages *usage;
754 __s32 **target;
755
756 if (list_empty(&application->mt_usages))
757 usage = mt_allocate_usage(hdev, application);
758 else
759 usage = list_last_entry(&application->mt_usages,
760 struct mt_usages,
761 list);
762
763 if (!usage)
764 return;
765
766 target = (__s32 **)((char *)usage + offset);
767
768 /* the value has already been filled, create a new slot */
769 if (*target != DEFAULT_TRUE &&
770 *target != DEFAULT_FALSE &&
771 *target != DEFAULT_ZERO) {
772 if (usage->contactid == DEFAULT_ZERO ||
773 usage->x == DEFAULT_ZERO ||
774 usage->y == DEFAULT_ZERO) {
775 hid_dbg(hdev,
776 "ignoring duplicate usage on incomplete");
777 return;
778 }
779 usage = mt_allocate_usage(hdev, application);
780 if (!usage)
781 return;
782
783 target = (__s32 **)((char *)usage + offset);
784 }
785
786 *target = value;
787 }
788
789 #define MT_STORE_FIELD(__name) \
790 mt_store_field(hdev, app, \
791 &field->value[usage->usage_index], \
792 offsetof(struct mt_usages, __name))
793
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)794 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
795 struct hid_field *field, struct hid_usage *usage,
796 unsigned long **bit, int *max, struct mt_application *app)
797 {
798 struct mt_device *td = hid_get_drvdata(hdev);
799 struct mt_class *cls = &td->mtclass;
800 int code;
801 struct hid_usage *prev_usage = NULL;
802
803 /*
804 * Model touchscreens providing buttons as touchpads.
805 */
806 if (field->application == HID_DG_TOUCHSCREEN &&
807 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
808 app->mt_flags |= INPUT_MT_POINTER;
809 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
810 }
811
812 /* count the buttons on touchpads */
813 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
814 app->buttons_count++;
815
816 if (usage->usage_index)
817 prev_usage = &field->usage[usage->usage_index - 1];
818
819 switch (usage->hid & HID_USAGE_PAGE) {
820
821 case HID_UP_GENDESK:
822 switch (usage->hid) {
823 case HID_GD_X:
824 if (prev_usage && (prev_usage->hid == usage->hid)) {
825 code = ABS_MT_TOOL_X;
826 MT_STORE_FIELD(cx);
827 } else {
828 code = ABS_MT_POSITION_X;
829 MT_STORE_FIELD(x);
830 }
831
832 set_abs(hi->input, code, field, cls->sn_move);
833
834 /*
835 * A system multi-axis that exports X and Y has a high
836 * chance of being used directly on a surface
837 */
838 if (field->application == HID_GD_SYSTEM_MULTIAXIS) {
839 __set_bit(INPUT_PROP_DIRECT,
840 hi->input->propbit);
841 input_set_abs_params(hi->input,
842 ABS_MT_TOOL_TYPE,
843 MT_TOOL_DIAL,
844 MT_TOOL_DIAL, 0, 0);
845 }
846
847 return 1;
848 case HID_GD_Y:
849 if (prev_usage && (prev_usage->hid == usage->hid)) {
850 code = ABS_MT_TOOL_Y;
851 MT_STORE_FIELD(cy);
852 } else {
853 code = ABS_MT_POSITION_Y;
854 MT_STORE_FIELD(y);
855 }
856
857 set_abs(hi->input, code, field, cls->sn_move);
858
859 return 1;
860 }
861 return 0;
862
863 case HID_UP_DIGITIZER:
864 switch (usage->hid) {
865 case HID_DG_INRANGE:
866 if (app->quirks & MT_QUIRK_HOVERING) {
867 input_set_abs_params(hi->input,
868 ABS_MT_DISTANCE, 0, 1, 0, 0);
869 }
870 MT_STORE_FIELD(inrange_state);
871 return 1;
872 case HID_DG_CONFIDENCE:
873 if ((cls->name == MT_CLS_WIN_8 ||
874 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT ||
875 cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU ||
876 cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP ||
877 cls->name == MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE) &&
878 (field->application == HID_DG_TOUCHPAD ||
879 field->application == HID_DG_TOUCHSCREEN))
880 app->quirks |= MT_QUIRK_CONFIDENCE;
881
882 if (app->quirks & MT_QUIRK_CONFIDENCE)
883 input_set_abs_params(hi->input,
884 ABS_MT_TOOL_TYPE,
885 MT_TOOL_FINGER,
886 MT_TOOL_PALM, 0, 0);
887
888 MT_STORE_FIELD(confidence_state);
889 return 1;
890 case HID_DG_TOUCH:
891 /*
892 * Legacy devices use TIPSWITCH and not TOUCH.
893 * One special case here is of the Apple Touch Bars.
894 * In these devices, the tip state is contained in
895 * fields with the HID_DG_TOUCH usage.
896 * Let's just ignore this field for other devices.
897 */
898 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR))
899 return -1;
900 fallthrough;
901 case HID_DG_TIPSWITCH:
902 if (field->application != HID_GD_SYSTEM_MULTIAXIS)
903 input_set_capability(hi->input,
904 EV_KEY, BTN_TOUCH);
905 MT_STORE_FIELD(tip_state);
906 return 1;
907 case HID_DG_TRANSDUCER_INDEX:
908 /*
909 * Contact ID in case of Apple Touch Bars is contained
910 * in fields with HID_DG_TRANSDUCER_INDEX usage.
911 */
912 if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR))
913 return 0;
914 fallthrough;
915 case HID_DG_CONTACTID:
916 MT_STORE_FIELD(contactid);
917 app->touches_by_report++;
918 return 1;
919 case HID_DG_WIDTH:
920 if (!(app->quirks & MT_QUIRK_NO_AREA))
921 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
922 cls->sn_width);
923 MT_STORE_FIELD(w);
924 return 1;
925 case HID_DG_HEIGHT:
926 if (!(app->quirks & MT_QUIRK_NO_AREA)) {
927 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
928 cls->sn_height);
929
930 /*
931 * Only set ABS_MT_ORIENTATION if it is not
932 * already set by the HID_DG_AZIMUTH usage.
933 */
934 if (!test_bit(ABS_MT_ORIENTATION,
935 hi->input->absbit))
936 input_set_abs_params(hi->input,
937 ABS_MT_ORIENTATION, 0, 1, 0, 0);
938 }
939 MT_STORE_FIELD(h);
940 return 1;
941 case HID_DG_TIPPRESSURE:
942 set_abs(hi->input, ABS_MT_PRESSURE, field,
943 cls->sn_pressure);
944 td->is_haptic_touchpad =
945 hid_haptic_check_pressure_unit(td->haptic,
946 hi, field);
947 MT_STORE_FIELD(p);
948 return 1;
949 case HID_DG_SCANTIME:
950 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
951 app->scantime = &field->value[usage->usage_index];
952 app->scantime_logical_max = field->logical_maximum;
953 return 1;
954 case HID_DG_CONTACTCOUNT:
955 app->have_contact_count = true;
956 app->raw_cc = &field->value[usage->usage_index];
957 return 1;
958 case HID_DG_AZIMUTH:
959 /*
960 * Azimuth has the range of [0, MAX) representing a full
961 * revolution. Set ABS_MT_ORIENTATION to a quarter of
962 * MAX according the definition of ABS_MT_ORIENTATION
963 */
964 input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
965 -field->logical_maximum / 4,
966 field->logical_maximum / 4,
967 cls->sn_move ?
968 field->logical_maximum / cls->sn_move : 0, 0);
969 MT_STORE_FIELD(a);
970 return 1;
971 case HID_DG_CONTACTMAX:
972 /* contact max are global to the report */
973 return -1;
974 }
975 /* let hid-input decide for the others */
976 return 0;
977
978 case HID_UP_BUTTON:
979 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
980 /*
981 * MS PTP spec says that external buttons left and right have
982 * usages 2 and 3.
983 */
984 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
985 field->application == HID_DG_TOUCHPAD &&
986 (usage->hid & HID_USAGE) > 1)
987 code--;
988
989 if (field->application == HID_GD_SYSTEM_MULTIAXIS)
990 code = BTN_0 + ((usage->hid - 1) & HID_USAGE);
991
992 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
993 if (!*bit)
994 return -1;
995 input_set_capability(hi->input, EV_KEY, code);
996 return 1;
997
998 case 0xff000000:
999 /* we do not want to map these: no input-oriented meaning */
1000 return -1;
1001 }
1002
1003 return 0;
1004 }
1005
mt_compute_slot(struct mt_device * td,struct mt_application * app,struct mt_usages * slot,struct input_dev * input)1006 static int mt_compute_slot(struct mt_device *td, struct mt_application *app,
1007 struct mt_usages *slot,
1008 struct input_dev *input)
1009 {
1010 __s32 quirks = app->quirks;
1011
1012 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
1013 return *slot->contactid;
1014
1015 if (quirks & MT_QUIRK_CYPRESS)
1016 return cypress_compute_slot(app, slot);
1017
1018 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
1019 return app->num_received;
1020
1021 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
1022 return *slot->contactid - 1;
1023
1024 return input_mt_get_slot_by_key(input, *slot->contactid);
1025 }
1026
mt_release_pending_palms(struct mt_device * td,struct mt_application * app,struct input_dev * input)1027 static void mt_release_pending_palms(struct mt_device *td,
1028 struct mt_application *app,
1029 struct input_dev *input)
1030 {
1031 int slotnum;
1032 bool need_sync = false;
1033
1034 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) {
1035 clear_bit(slotnum, app->pending_palm_slots);
1036 clear_bit(slotnum, &td->mt_io_flags);
1037
1038 input_mt_slot(input, slotnum);
1039 input_mt_report_slot_inactive(input);
1040
1041 need_sync = true;
1042 }
1043
1044 if (need_sync) {
1045 input_mt_sync_frame(input);
1046 input_sync(input);
1047 }
1048 }
1049
1050 /*
1051 * this function is called when a whole packet has been received and processed,
1052 * so that it can decide what to send to the input layer.
1053 */
mt_sync_frame(struct mt_device * td,struct mt_application * app,struct input_dev * input)1054 static void mt_sync_frame(struct mt_device *td, struct mt_application *app,
1055 struct input_dev *input)
1056 {
1057 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS)
1058 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state);
1059
1060 input_mt_sync_frame(input);
1061 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp);
1062 input_sync(input);
1063
1064 mt_release_pending_palms(td, app, input);
1065
1066 app->num_received = 0;
1067 app->left_button_state = 0;
1068 if (td->is_haptic_touchpad)
1069 hid_haptic_pressure_reset(td->haptic);
1070 }
1071
mt_compute_timestamp(struct mt_application * app,__s32 value)1072 static int mt_compute_timestamp(struct mt_application *app, __s32 value)
1073 {
1074 long delta = value - app->prev_scantime;
1075 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies);
1076
1077 app->jiffies = jiffies;
1078
1079 if (delta < 0)
1080 delta += app->scantime_logical_max;
1081
1082 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
1083 delta *= 100;
1084
1085 if (jdelta > MAX_TIMESTAMP_INTERVAL)
1086 /* No data received for a while, resync the timestamp. */
1087 return 0;
1088 else
1089 return app->timestamp + delta;
1090 }
1091
mt_touch_event(struct hid_device * hid,struct hid_field * field,struct hid_usage * usage,__s32 value)1092 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
1093 struct hid_usage *usage, __s32 value)
1094 {
1095 /* we will handle the hidinput part later, now remains hiddev */
1096 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
1097 hid->hiddev_hid_event(hid, field, usage, value);
1098
1099 return 1;
1100 }
1101
mt_process_slot(struct mt_device * td,struct input_dev * input,struct mt_application * app,struct mt_usages * slot)1102 static int mt_process_slot(struct mt_device *td, struct input_dev *input,
1103 struct mt_application *app,
1104 struct mt_usages *slot)
1105 {
1106 struct input_mt *mt = input->mt;
1107 struct hid_device *hdev = td->hdev;
1108 __s32 quirks = app->quirks;
1109 bool valid = true;
1110 bool confidence_state = true;
1111 bool inrange_state = false;
1112 int active;
1113 int slotnum;
1114 int tool = MT_TOOL_FINGER;
1115
1116 if (!slot)
1117 return -EINVAL;
1118
1119 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
1120 app->num_received >= app->num_expected)
1121 return -EAGAIN;
1122
1123 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) {
1124 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
1125 valid = *slot->inrange_state;
1126 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
1127 valid = *slot->tip_state;
1128 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
1129 valid = *slot->confidence_state;
1130
1131 if (!valid)
1132 return 0;
1133 }
1134
1135 slotnum = mt_compute_slot(td, app, slot, input);
1136 if (slotnum < 0 || slotnum >= td->maxcontacts)
1137 return 0;
1138
1139 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
1140 struct input_mt_slot *i_slot = &mt->slots[slotnum];
1141
1142 if (input_mt_is_active(i_slot) &&
1143 input_mt_is_used(mt, i_slot))
1144 return -EAGAIN;
1145 }
1146
1147 if (quirks & MT_QUIRK_CONFIDENCE)
1148 confidence_state = *slot->confidence_state;
1149
1150 if (quirks & MT_QUIRK_HOVERING)
1151 inrange_state = *slot->inrange_state;
1152
1153 active = *slot->tip_state || inrange_state;
1154
1155 if (app->application == HID_GD_SYSTEM_MULTIAXIS)
1156 tool = MT_TOOL_DIAL;
1157 else if (unlikely(!confidence_state)) {
1158 tool = MT_TOOL_PALM;
1159 if (!active && mt &&
1160 input_mt_is_active(&mt->slots[slotnum])) {
1161 /*
1162 * The non-confidence was reported for
1163 * previously valid contact that is also no
1164 * longer valid. We can't simply report
1165 * lift-off as userspace will not be aware
1166 * of non-confidence, so we need to split
1167 * it into 2 events: active MT_TOOL_PALM
1168 * and a separate liftoff.
1169 */
1170 active = true;
1171 set_bit(slotnum, app->pending_palm_slots);
1172 }
1173 }
1174
1175 input_mt_slot(input, slotnum);
1176 input_mt_report_slot_state(input, tool, active);
1177 if (active) {
1178 /* this finger is in proximity of the sensor */
1179 int wide = (*slot->w > *slot->h);
1180 int major = max(*slot->w, *slot->h);
1181 int minor = min(*slot->w, *slot->h);
1182 int orientation = wide;
1183 int max_azimuth;
1184 int azimuth;
1185 int x;
1186 int y;
1187 int cx;
1188 int cy;
1189
1190 if (slot->a != DEFAULT_ZERO) {
1191 /*
1192 * Azimuth is counter-clockwise and ranges from [0, MAX)
1193 * (a full revolution). Convert it to clockwise ranging
1194 * [-MAX/2, MAX/2].
1195 *
1196 * Note that ABS_MT_ORIENTATION require us to report
1197 * the limit of [-MAX/4, MAX/4], but the value can go
1198 * out of range to [-MAX/2, MAX/2] to report an upside
1199 * down ellipsis.
1200 */
1201 azimuth = *slot->a;
1202 max_azimuth = input_abs_get_max(input,
1203 ABS_MT_ORIENTATION);
1204 if (azimuth > max_azimuth * 2)
1205 azimuth -= max_azimuth * 4;
1206 orientation = -azimuth;
1207 if (quirks & MT_QUIRK_ORIENTATION_INVERT)
1208 orientation = -orientation;
1209
1210 }
1211
1212 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
1213 /*
1214 * divided by two to match visual scale of touch
1215 * for devices with this quirk
1216 */
1217 major = major >> 1;
1218 minor = minor >> 1;
1219 }
1220
1221 if (td->is_haptic_touchpad)
1222 hid_haptic_pressure_increase(td->haptic, *slot->p);
1223
1224 x = hdev->quirks & HID_QUIRK_X_INVERT ?
1225 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->x :
1226 *slot->x;
1227 y = hdev->quirks & HID_QUIRK_Y_INVERT ?
1228 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->y :
1229 *slot->y;
1230 cx = hdev->quirks & HID_QUIRK_X_INVERT ?
1231 input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->cx :
1232 *slot->cx;
1233 cy = hdev->quirks & HID_QUIRK_Y_INVERT ?
1234 input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->cy :
1235 *slot->cy;
1236
1237 input_event(input, EV_ABS, ABS_MT_POSITION_X, x);
1238 input_event(input, EV_ABS, ABS_MT_POSITION_Y, y);
1239 input_event(input, EV_ABS, ABS_MT_TOOL_X, cx);
1240 input_event(input, EV_ABS, ABS_MT_TOOL_Y, cy);
1241 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state);
1242 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation);
1243 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p);
1244 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
1245 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
1246
1247 set_bit(slotnum, &td->mt_io_flags);
1248 } else {
1249 clear_bit(slotnum, &td->mt_io_flags);
1250 }
1251
1252 return 0;
1253 }
1254
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)1255 static void mt_process_mt_event(struct hid_device *hid,
1256 struct mt_application *app,
1257 struct hid_field *field,
1258 struct hid_usage *usage,
1259 __s32 value,
1260 bool first_packet)
1261 {
1262 __s32 quirks = app->quirks;
1263 struct input_dev *input = field->hidinput->input;
1264
1265 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT))
1266 return;
1267
1268 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) {
1269
1270 /*
1271 * For Win8 PTP touchpads we should only look at
1272 * non finger/touch events in the first_packet of a
1273 * (possible) multi-packet frame.
1274 */
1275 if (!first_packet)
1276 return;
1277
1278 /*
1279 * For Win8 PTP touchpads we map both the clickpad click
1280 * and any "external" left buttons to BTN_LEFT if a
1281 * device claims to have both we need to report 1 for
1282 * BTN_LEFT if either is pressed, so we or all values
1283 * together and report the result in mt_sync_frame().
1284 */
1285 if (usage->type == EV_KEY && usage->code == BTN_LEFT) {
1286 app->left_button_state |= value;
1287 return;
1288 }
1289 }
1290
1291 input_event(input, usage->type, usage->code, value);
1292 }
1293
mt_touch_report(struct hid_device * hid,struct mt_report_data * rdata)1294 static void mt_touch_report(struct hid_device *hid,
1295 struct mt_report_data *rdata)
1296 {
1297 struct mt_device *td = hid_get_drvdata(hid);
1298 struct hid_report *report = rdata->report;
1299 struct mt_application *app = rdata->application;
1300 struct hid_field *field;
1301 struct input_dev *input;
1302 struct mt_usages *slot;
1303 bool first_packet;
1304 unsigned count;
1305 int r, n;
1306 int scantime = 0;
1307 int contact_count = -1;
1308
1309 /* sticky fingers release in progress, abort */
1310 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1311 return;
1312
1313 scantime = *app->scantime;
1314 app->timestamp = mt_compute_timestamp(app, scantime);
1315 if (app->raw_cc != DEFAULT_ZERO)
1316 contact_count = *app->raw_cc;
1317
1318 /*
1319 * Includes multi-packet support where subsequent
1320 * packets are sent with zero contactcount.
1321 */
1322 if (contact_count >= 0) {
1323 /*
1324 * For Win8 PTPs the first packet (td->num_received == 0) may
1325 * have a contactcount of 0 if there only is a button event.
1326 * We double check that this is not a continuation packet
1327 * of a possible multi-packet frame be checking that the
1328 * timestamp has changed.
1329 */
1330 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
1331 app->num_received == 0 &&
1332 app->prev_scantime != scantime)
1333 app->num_expected = contact_count;
1334 /* A non 0 contact count always indicates a first packet */
1335 else if (contact_count)
1336 app->num_expected = contact_count;
1337 }
1338 app->prev_scantime = scantime;
1339
1340 first_packet = app->num_received == 0;
1341
1342 input = report->field[0]->hidinput->input;
1343
1344 list_for_each_entry(slot, &app->mt_usages, list) {
1345 if (!mt_process_slot(td, input, app, slot))
1346 app->num_received++;
1347 }
1348
1349 for (r = 0; r < report->maxfield; r++) {
1350 field = report->field[r];
1351 count = field->report_count;
1352
1353 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
1354 continue;
1355
1356 for (n = 0; n < count; n++)
1357 mt_process_mt_event(hid, app, field,
1358 &field->usage[n], field->value[n],
1359 first_packet);
1360 }
1361
1362 if (app->num_received >= app->num_expected)
1363 mt_sync_frame(td, app, input);
1364
1365 /*
1366 * Windows 8 specs says 2 things:
1367 * - once a contact has been reported, it has to be reported in each
1368 * subsequent report
1369 * - the report rate when fingers are present has to be at least
1370 * the refresh rate of the screen, 60 or 120 Hz
1371 *
1372 * I interprete this that the specification forces a report rate of
1373 * at least 60 Hz for a touchscreen to be certified.
1374 * Which means that if we do not get a report whithin 16 ms, either
1375 * something wrong happens, either the touchscreen forgets to send
1376 * a release. Taking a reasonable margin allows to remove issues
1377 * with USB communication or the load of the machine.
1378 *
1379 * Given that Win 8 devices are forced to send a release, this will
1380 * only affect laggish machines and the ones that have a firmware
1381 * defect.
1382 */
1383 if (app->quirks & MT_QUIRK_STICKY_FINGERS) {
1384 if (td->mt_io_flags & MT_IO_SLOTS_MASK)
1385 mod_timer(&td->release_timer,
1386 jiffies + msecs_to_jiffies(100));
1387 else
1388 timer_delete(&td->release_timer);
1389 }
1390
1391 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1392 }
1393
mt_touch_input_configured(struct hid_device * hdev,struct hid_input * hi,struct mt_application * app)1394 static int mt_touch_input_configured(struct hid_device *hdev,
1395 struct hid_input *hi,
1396 struct mt_application *app)
1397 {
1398 struct mt_device *td = hid_get_drvdata(hdev);
1399 struct mt_class *cls = &td->mtclass;
1400 struct input_dev *input = hi->input;
1401 int ret;
1402
1403 /*
1404 * HID_DG_CONTACTMAX field is not present on Apple Touch Bars,
1405 * but the maximum contact count is greater than the default.
1406 */
1407 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && cls->maxcontacts)
1408 td->maxcontacts = cls->maxcontacts;
1409
1410 if (!td->maxcontacts)
1411 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
1412
1413 mt_post_parse(td, app);
1414 if (td->serial_maybe)
1415 mt_post_parse_default_settings(td, app);
1416
1417 /*
1418 * The application for Apple Touch Bars is HID_DG_TOUCHPAD,
1419 * but these devices are direct.
1420 */
1421 if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)
1422 app->mt_flags |= INPUT_MT_DIRECT;
1423
1424 if (cls->is_indirect)
1425 app->mt_flags |= INPUT_MT_POINTER;
1426
1427 if (td->is_haptic_touchpad)
1428 app->mt_flags |= INPUT_MT_TOTAL_FORCE;
1429
1430 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
1431 app->mt_flags |= INPUT_MT_DROP_UNUSED;
1432
1433 /* check for clickpads */
1434 if ((app->mt_flags & INPUT_MT_POINTER) &&
1435 (app->buttons_count == 1))
1436 td->is_buttonpad = true;
1437
1438 if (td->is_buttonpad)
1439 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
1440 if (td->is_pressurepad)
1441 __set_bit(INPUT_PROP_PRESSUREPAD, input->propbit);
1442
1443 app->pending_palm_slots = devm_kcalloc(&hi->input->dev,
1444 BITS_TO_LONGS(td->maxcontacts),
1445 sizeof(long),
1446 GFP_KERNEL);
1447 if (!app->pending_palm_slots)
1448 return -ENOMEM;
1449
1450 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags);
1451 if (ret)
1452 return ret;
1453
1454 app->mt_flags = 0;
1455 return 0;
1456 }
1457
1458 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
1459 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)1460 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
1461 struct hid_field *field, struct hid_usage *usage,
1462 unsigned long **bit, int *max)
1463 {
1464 struct mt_device *td = hid_get_drvdata(hdev);
1465 struct mt_application *application;
1466 struct mt_report_data *rdata;
1467 int ret;
1468
1469 rdata = mt_find_report_data(td, field->report);
1470 if (!rdata) {
1471 hid_err(hdev, "failed to allocate data for report\n");
1472 return 0;
1473 }
1474
1475 application = rdata->application;
1476
1477 /*
1478 * If mtclass.export_all_inputs is not set, only map fields from
1479 * TouchScreen or TouchPad collections. We need to ignore fields
1480 * that belong to other collections such as Mouse that might have
1481 * the same GenericDesktop usages.
1482 */
1483 if (!td->mtclass.export_all_inputs &&
1484 field->application != HID_DG_TOUCHSCREEN &&
1485 field->application != HID_DG_PEN &&
1486 field->application != HID_DG_TOUCHPAD &&
1487 field->application != HID_GD_KEYBOARD &&
1488 field->application != HID_GD_SYSTEM_CONTROL &&
1489 field->application != HID_CP_CONSUMER_CONTROL &&
1490 field->application != HID_GD_WIRELESS_RADIO_CTLS &&
1491 field->application != HID_GD_SYSTEM_MULTIAXIS &&
1492 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1493 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP))
1494 return -1;
1495
1496 /*
1497 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
1498 * touchpad report descriptor. We need to treat these as an array to
1499 * map usages to input keys.
1500 */
1501 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1502 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
1503 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
1504 set_bit(EV_REP, hi->input->evbit);
1505 if (field->flags & HID_MAIN_ITEM_VARIABLE)
1506 field->flags &= ~HID_MAIN_ITEM_VARIABLE;
1507 switch (usage->hid & HID_USAGE) {
1508 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break;
1509 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break;
1510 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break;
1511 case 0x6b: mt_map_key_clear(KEY_F21); break;
1512 case 0x6c: mt_map_key_clear(KEY_SLEEP); break;
1513 default:
1514 return -1;
1515 }
1516 return 1;
1517 }
1518
1519 if (rdata->is_mt_collection)
1520 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max,
1521 application);
1522
1523 /*
1524 * some egalax touchscreens have "application == DG_TOUCHSCREEN"
1525 * for the stylus. Overwrite the hid_input application
1526 */
1527 if (field->physical == HID_DG_STYLUS)
1528 hi->application = HID_DG_STYLUS;
1529
1530 ret = hid_haptic_input_mapping(hdev, td->haptic, hi, field, usage, bit,
1531 max);
1532 if (ret != 0)
1533 return ret;
1534
1535 /* let hid-core decide for the others */
1536 return 0;
1537 }
1538
mt_input_mapped(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)1539 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
1540 struct hid_field *field, struct hid_usage *usage,
1541 unsigned long **bit, int *max)
1542 {
1543 struct mt_device *td = hid_get_drvdata(hdev);
1544 struct mt_report_data *rdata;
1545
1546 rdata = mt_find_report_data(td, field->report);
1547 if (rdata && rdata->is_mt_collection) {
1548 /* We own these mappings, tell hid-input to ignore them */
1549 return -1;
1550 }
1551
1552 /* let hid-core decide for the others */
1553 return 0;
1554 }
1555
mt_event(struct hid_device * hid,struct hid_field * field,struct hid_usage * usage,__s32 value)1556 static int mt_event(struct hid_device *hid, struct hid_field *field,
1557 struct hid_usage *usage, __s32 value)
1558 {
1559 struct mt_device *td = hid_get_drvdata(hid);
1560 struct mt_report_data *rdata;
1561
1562 rdata = mt_find_report_data(td, field->report);
1563 if (rdata && rdata->is_mt_collection)
1564 return mt_touch_event(hid, field, usage, value);
1565
1566 return 0;
1567 }
1568
mt_report_fixup(struct hid_device * hdev,__u8 * rdesc,unsigned int * size)1569 static const __u8 *mt_report_fixup(struct hid_device *hdev, __u8 *rdesc,
1570 unsigned int *size)
1571 {
1572 if (hdev->vendor == I2C_VENDOR_ID_GOODIX &&
1573 (hdev->product == I2C_DEVICE_ID_GOODIX_01E8 ||
1574 hdev->product == I2C_DEVICE_ID_GOODIX_01E9)) {
1575 if (*size < 608) {
1576 dev_info(
1577 &hdev->dev,
1578 "GT7868Q fixup: report descriptor is only %u bytes, skipping\n",
1579 *size);
1580 return rdesc;
1581 }
1582
1583 if (rdesc[607] == 0x15) {
1584 rdesc[607] = 0x25;
1585 dev_info(
1586 &hdev->dev,
1587 "GT7868Q report descriptor fixup is applied.\n");
1588 } else {
1589 dev_info(
1590 &hdev->dev,
1591 "The byte is not expected for fixing the report descriptor. \
1592 It's possible that the touchpad firmware is not suitable for applying the fix. \
1593 got: %x\n",
1594 rdesc[607]);
1595 }
1596 }
1597
1598 return rdesc;
1599 }
1600
mt_report(struct hid_device * hid,struct hid_report * report)1601 static void mt_report(struct hid_device *hid, struct hid_report *report)
1602 {
1603 struct mt_device *td = hid_get_drvdata(hid);
1604 struct hid_field *field = report->field[0];
1605 struct mt_report_data *rdata;
1606
1607 if (!(hid->claimed & HID_CLAIMED_INPUT))
1608 return;
1609
1610 rdata = mt_find_report_data(td, report);
1611 if (rdata && rdata->is_mt_collection)
1612 return mt_touch_report(hid, rdata);
1613
1614 /* Lenovo Yoga Book 9i requires consuming and dropping certain bogus reports */
1615 if (rdata && rdata->application &&
1616 (rdata->application->quirks & MT_QUIRK_YOGABOOK9I)) {
1617
1618 bool all_zero_report = true;
1619
1620 for (int f = 0; f < report->maxfield && all_zero_report; f++) {
1621 struct hid_field *fld = report->field[f];
1622
1623 for (int i = 0; i < fld->report_count; i++) {
1624 unsigned int usage = fld->usage[i].hid;
1625
1626 if (usage == HID_DG_INRANGE ||
1627 usage == HID_DG_TIPSWITCH ||
1628 usage == HID_DG_BARRELSWITCH ||
1629 usage == HID_DG_BARRELSWITCH2 ||
1630 usage == HID_DG_CONTACTID ||
1631 usage == HID_DG_TILT_X ||
1632 usage == HID_DG_TILT_Y) {
1633
1634 if (fld->value[i] != 0) {
1635 all_zero_report = false;
1636 break;
1637 }
1638 }
1639 }
1640 }
1641
1642 if (all_zero_report)
1643 return;
1644 }
1645
1646 if (field && field->hidinput && field->hidinput->input)
1647 input_sync(field->hidinput->input);
1648 }
1649
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)1650 static bool mt_need_to_apply_feature(struct hid_device *hdev,
1651 struct hid_field *field,
1652 struct hid_usage *usage,
1653 enum latency_mode latency,
1654 enum report_mode report_mode,
1655 bool *inputmode_found)
1656 {
1657 struct mt_device *td = hid_get_drvdata(hdev);
1658 struct mt_class *cls = &td->mtclass;
1659 struct hid_report *report = field->report;
1660 unsigned int index = usage->usage_index;
1661 char *buf;
1662 u32 report_len;
1663 int max;
1664
1665 switch (usage->hid) {
1666 case HID_DG_INPUTMODE:
1667 /*
1668 * Some elan panels wrongly declare 2 input mode features,
1669 * and silently ignore when we set the value in the second
1670 * field. Skip the second feature and hope for the best.
1671 */
1672 if (*inputmode_found)
1673 return false;
1674
1675 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1676 report_len = hid_report_len(report);
1677 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1678 if (!buf) {
1679 hid_err(hdev,
1680 "failed to allocate buffer for report\n");
1681 return false;
1682 }
1683 hid_hw_raw_request(hdev, report->id, buf, report_len,
1684 HID_FEATURE_REPORT,
1685 HID_REQ_GET_REPORT);
1686 kfree(buf);
1687 }
1688
1689 field->value[index] = td->inputmode_value;
1690 *inputmode_found = true;
1691 return true;
1692
1693 case HID_DG_CONTACTMAX:
1694 if (cls->maxcontacts) {
1695 max = min_t(int, field->logical_maximum,
1696 cls->maxcontacts);
1697 if (field->value[index] != max) {
1698 field->value[index] = max;
1699 return true;
1700 }
1701 }
1702 break;
1703
1704 case HID_DG_LATENCYMODE:
1705 field->value[index] = latency;
1706 return true;
1707
1708 case HID_DG_SURFACESWITCH:
1709 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_CONTACTS);
1710 return true;
1711
1712 case HID_DG_BUTTONSWITCH:
1713 field->value[index] = !!(report_mode & TOUCHPAD_REPORT_BUTTONS);
1714 return true;
1715 }
1716
1717 return false; /* no need to update the report */
1718 }
1719
mt_set_modes(struct hid_device * hdev,enum latency_mode latency,enum report_mode report_mode)1720 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency,
1721 enum report_mode report_mode)
1722 {
1723 struct hid_report_enum *rep_enum;
1724 struct hid_report *rep;
1725 struct hid_usage *usage;
1726 int i, j;
1727 bool update_report;
1728 bool inputmode_found = false;
1729
1730 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
1731 list_for_each_entry(rep, &rep_enum->report_list, list) {
1732 update_report = false;
1733
1734 for (i = 0; i < rep->maxfield; i++) {
1735 /* Ignore if report count is out of bounds. */
1736 if (rep->field[i]->report_count < 1)
1737 continue;
1738
1739 for (j = 0; j < rep->field[i]->maxusage; j++) {
1740 usage = &rep->field[i]->usage[j];
1741
1742 if (mt_need_to_apply_feature(hdev,
1743 rep->field[i],
1744 usage,
1745 latency,
1746 report_mode,
1747 &inputmode_found))
1748 update_report = true;
1749 }
1750 }
1751
1752 if (update_report)
1753 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT);
1754 }
1755 }
1756
mt_post_parse_default_settings(struct mt_device * td,struct mt_application * app)1757 static void mt_post_parse_default_settings(struct mt_device *td,
1758 struct mt_application *app)
1759 {
1760 __s32 quirks = app->quirks;
1761
1762 /* unknown serial device needs special quirks */
1763 if (list_is_singular(&app->mt_usages)) {
1764 quirks |= MT_QUIRK_ALWAYS_VALID;
1765 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1766 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1767 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1768 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1769 }
1770
1771 app->quirks = quirks;
1772 }
1773
mt_post_parse(struct mt_device * td,struct mt_application * app)1774 static void mt_post_parse(struct mt_device *td, struct mt_application *app)
1775 {
1776 if (!app->have_contact_count)
1777 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1778 }
1779
mt_input_configured(struct hid_device * hdev,struct hid_input * hi)1780 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1781 {
1782 struct mt_device *td = hid_get_drvdata(hdev);
1783 const char *suffix = NULL;
1784 struct mt_report_data *rdata;
1785 struct mt_application *mt_application = NULL;
1786 struct hid_report *report;
1787 int ret;
1788
1789 if (td->is_haptic_touchpad && (td->mtclass.name == MT_CLS_WIN_8 ||
1790 td->mtclass.name == MT_CLS_WIN_8_FORCE_MULTI_INPUT ||
1791 td->mtclass.name == MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE)) {
1792 if (hid_haptic_input_configured(hdev, td->haptic, hi) == 0)
1793 td->is_haptic_touchpad = false;
1794 } else {
1795 td->is_haptic_touchpad = false;
1796 }
1797
1798 list_for_each_entry(report, &hi->reports, hidinput_list) {
1799 rdata = mt_find_report_data(td, report);
1800 if (!rdata) {
1801 hid_err(hdev, "failed to allocate data for report\n");
1802 return -ENOMEM;
1803 }
1804
1805 mt_application = rdata->application;
1806
1807 if (rdata->is_mt_collection) {
1808 ret = mt_touch_input_configured(hdev, hi,
1809 mt_application);
1810 if (ret)
1811 return ret;
1812 }
1813 }
1814
1815 switch (hi->application) {
1816 case HID_GD_KEYBOARD:
1817 case HID_GD_KEYPAD:
1818 case HID_GD_MOUSE:
1819 case HID_DG_TOUCHPAD:
1820 case HID_GD_SYSTEM_CONTROL:
1821 case HID_CP_CONSUMER_CONTROL:
1822 case HID_GD_WIRELESS_RADIO_CTLS:
1823 case HID_GD_SYSTEM_MULTIAXIS:
1824 case HID_DG_PEN:
1825 /* already handled by hid core */
1826 break;
1827 case HID_DG_TOUCHSCREEN:
1828 /* we do not set suffix = "Touchscreen" */
1829 hi->input->name = hdev->name;
1830 break;
1831 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1832 suffix = "Custom Media Keys";
1833 break;
1834 case HID_DG_STYLUS:
1835 /* force BTN_STYLUS to allow tablet matching in udev */
1836 __set_bit(BTN_STYLUS, hi->input->keybit);
1837 break;
1838 default:
1839 suffix = "UNKNOWN";
1840 break;
1841 }
1842
1843 /* Lenovo Yoga Book 9i requires custom naming to allow differentiation in udev */
1844 if (hi->report && td->mtclass.quirks & MT_QUIRK_YOGABOOK9I) {
1845 switch (hi->report->id) {
1846 case 48:
1847 suffix = "Touchscreen Top";
1848 break;
1849 case 56:
1850 suffix = "Touchscreen Bottom";
1851 break;
1852 case 20:
1853 suffix = "Stylus Top";
1854 break;
1855 case 40:
1856 suffix = "Stylus Bottom";
1857 break;
1858 case 80:
1859 suffix = "Emulated Touchpad";
1860 break;
1861 default:
1862 suffix = "";
1863 break;
1864 }
1865 }
1866
1867 if (suffix) {
1868 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
1869 "%s %s", hdev->name, suffix);
1870 if (!hi->input->name)
1871 return -ENOMEM;
1872 }
1873
1874 return 0;
1875 }
1876
mt_fix_const_field(struct hid_field * field,unsigned int usage)1877 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1878 {
1879 if (field->usage[0].hid != usage ||
1880 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1881 return;
1882
1883 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1884 field->flags |= HID_MAIN_ITEM_VARIABLE;
1885 }
1886
mt_fix_const_fields(struct hid_device * hdev,unsigned int usage)1887 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1888 {
1889 struct hid_report *report;
1890 int i;
1891
1892 list_for_each_entry(report,
1893 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1894 list) {
1895
1896 if (!report->maxfield)
1897 continue;
1898
1899 for (i = 0; i < report->maxfield; i++)
1900 if (report->field[i]->maxusage >= 1)
1901 mt_fix_const_field(report->field[i], usage);
1902 }
1903 }
1904
mt_release_contacts(struct hid_device * hid)1905 static void mt_release_contacts(struct hid_device *hid)
1906 {
1907 struct hid_input *hidinput;
1908 struct mt_application *application;
1909 struct mt_device *td = hid_get_drvdata(hid);
1910
1911 list_for_each_entry(hidinput, &hid->inputs, list) {
1912 struct input_dev *input_dev = hidinput->input;
1913 struct input_mt *mt = input_dev->mt;
1914 int i;
1915
1916 if (mt) {
1917 for (i = 0; i < mt->num_slots; i++) {
1918 input_mt_slot(input_dev, i);
1919 input_mt_report_slot_inactive(input_dev);
1920 clear_bit(i, &td->mt_io_flags);
1921 }
1922 input_mt_sync_frame(input_dev);
1923 input_sync(input_dev);
1924 }
1925 }
1926
1927 list_for_each_entry(application, &td->applications, list) {
1928 application->num_received = 0;
1929 }
1930 }
1931
mt_expired_timeout(struct timer_list * t)1932 static void mt_expired_timeout(struct timer_list *t)
1933 {
1934 struct mt_device *td = timer_container_of(td, t, release_timer);
1935 struct hid_device *hdev = td->hdev;
1936
1937 /*
1938 * An input report came in just before we release the sticky fingers,
1939 * it will take care of the sticky fingers.
1940 */
1941 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1942 return;
1943 if (td->mt_io_flags & MT_IO_SLOTS_MASK)
1944 mt_release_contacts(hdev);
1945 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1946 }
1947
mt_probe(struct hid_device * hdev,const struct hid_device_id * id)1948 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1949 {
1950 int ret, i;
1951 struct mt_device *td;
1952 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1953
1954 for (i = 0; mt_classes[i].name ; i++) {
1955 if (id->driver_data == mt_classes[i].name) {
1956 mtclass = &(mt_classes[i]);
1957 break;
1958 }
1959 }
1960
1961 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1962 if (!td) {
1963 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1964 return -ENOMEM;
1965 }
1966 td->haptic = devm_kzalloc(&hdev->dev, sizeof(*(td->haptic)), GFP_KERNEL);
1967 if (!td->haptic)
1968 return -ENOMEM;
1969
1970 td->haptic->hdev = hdev;
1971 td->hdev = hdev;
1972 td->mtclass = *mtclass;
1973 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1974 hid_set_drvdata(hdev, td);
1975
1976 INIT_LIST_HEAD(&td->applications);
1977 INIT_LIST_HEAD(&td->reports);
1978
1979 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1980 td->serial_maybe = true;
1981
1982
1983 /* Orientation is inverted if the X or Y axes are
1984 * flipped, but normalized if both are inverted.
1985 */
1986 if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) &&
1987 !((hdev->quirks & HID_QUIRK_X_INVERT)
1988 && (hdev->quirks & HID_QUIRK_Y_INVERT)))
1989 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT;
1990
1991 /* This allows the driver to correctly support devices
1992 * that emit events over several HID messages.
1993 */
1994 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1995
1996 /*
1997 * This allows the driver to handle different input sensors
1998 * that emits events through different applications on the same HID
1999 * device.
2000 */
2001 hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
2002
2003 if (id->group != HID_GROUP_MULTITOUCH_WIN_8)
2004 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
2005
2006 if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) {
2007 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP;
2008 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
2009 }
2010
2011 timer_setup(&td->release_timer, mt_expired_timeout, 0);
2012
2013 ret = hid_parse(hdev);
2014 if (ret != 0)
2015 return ret;
2016
2017 if (mtclass->name == MT_CLS_APPLE_TOUCHBAR &&
2018 !hid_find_field(hdev, HID_INPUT_REPORT,
2019 HID_DG_TOUCHPAD, HID_DG_TRANSDUCER_INDEX))
2020 return -ENODEV;
2021
2022 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
2023 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
2024
2025 if (hdev->vendor == USB_VENDOR_ID_SIS_TOUCH)
2026 hdev->quirks |= HID_QUIRK_NOGET;
2027
2028 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
2029 if (ret)
2030 return ret;
2031
2032 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
2033 if (ret)
2034 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
2035 hdev->name);
2036
2037 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL);
2038
2039 if (td->is_haptic_touchpad) {
2040 if (hid_haptic_init(hdev, &td->haptic)) {
2041 dev_warn(&hdev->dev, "Cannot allocate haptic for %s\n",
2042 hdev->name);
2043 td->is_haptic_touchpad = false;
2044 devm_kfree(&hdev->dev, td->haptic);
2045 }
2046 } else {
2047 devm_kfree(&hdev->dev, td->haptic);
2048 }
2049
2050 return 0;
2051 }
2052
mt_suspend(struct hid_device * hdev,pm_message_t state)2053 static int mt_suspend(struct hid_device *hdev, pm_message_t state)
2054 {
2055 struct mt_device *td = hid_get_drvdata(hdev);
2056
2057 /* High latency is desirable for power savings during S3/S0ix */
2058 if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) ||
2059 !hid_hw_may_wakeup(hdev))
2060 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE);
2061 else
2062 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_ALL);
2063
2064 return 0;
2065 }
2066
mt_reset_resume(struct hid_device * hdev)2067 static int mt_reset_resume(struct hid_device *hdev)
2068 {
2069 mt_release_contacts(hdev);
2070 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL);
2071 return 0;
2072 }
2073
mt_resume(struct hid_device * hdev)2074 static int mt_resume(struct hid_device *hdev)
2075 {
2076 /* Some Elan legacy devices require SET_IDLE to be set on resume.
2077 * It should be safe to send it to other devices too.
2078 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
2079
2080 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
2081
2082 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL);
2083
2084 return 0;
2085 }
2086
mt_remove(struct hid_device * hdev)2087 static void mt_remove(struct hid_device *hdev)
2088 {
2089 struct mt_device *td = hid_get_drvdata(hdev);
2090
2091 timer_delete_sync(&td->release_timer);
2092
2093 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
2094 hid_hw_stop(hdev);
2095 }
2096
mt_on_hid_hw_open(struct hid_device * hdev)2097 static void mt_on_hid_hw_open(struct hid_device *hdev)
2098 {
2099 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL);
2100 }
2101
mt_on_hid_hw_close(struct hid_device * hdev)2102 static void mt_on_hid_hw_close(struct hid_device *hdev)
2103 {
2104 struct mt_device *td = hid_get_drvdata(hdev);
2105
2106 if (td->mtclass.quirks & MT_QUIRK_KEEP_LATENCY_ON_CLOSE)
2107 mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_NONE);
2108 else
2109 mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE);
2110 }
2111
2112 /*
2113 * This list contains only:
2114 * - VID/PID of products not working with the default multitouch handling
2115 * - 2 generic rules.
2116 * So there is no point in adding here any device with MT_CLS_DEFAULT.
2117 */
2118 static const struct hid_device_id mt_devices[] = {
2119
2120 /* 3M panels */
2121 { .driver_data = MT_CLS_3M,
2122 MT_USB_DEVICE(USB_VENDOR_ID_3M,
2123 USB_DEVICE_ID_3M1968) },
2124 { .driver_data = MT_CLS_3M,
2125 MT_USB_DEVICE(USB_VENDOR_ID_3M,
2126 USB_DEVICE_ID_3M2256) },
2127 { .driver_data = MT_CLS_3M,
2128 MT_USB_DEVICE(USB_VENDOR_ID_3M,
2129 USB_DEVICE_ID_3M3266) },
2130
2131 /* Anton devices */
2132 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
2133 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
2134 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
2135
2136 /* Asus T101HA */
2137 { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP,
2138 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2139 USB_VENDOR_ID_ASUSTEK,
2140 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) },
2141
2142 /* Asus T304UA */
2143 { .driver_data = MT_CLS_ASUS,
2144 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2145 USB_VENDOR_ID_ASUSTEK,
2146 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
2147
2148 /* Atmel panels */
2149 { .driver_data = MT_CLS_SERIAL,
2150 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
2151 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
2152
2153 /* Baanto multitouch devices */
2154 { .driver_data = MT_CLS_NSMU,
2155 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
2156 USB_DEVICE_ID_BAANTO_MT_190W2) },
2157
2158 /* Cando panels */
2159 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
2160 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
2161 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
2162 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
2163 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
2164 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
2165
2166 /* Chunghwa Telecom touch panels */
2167 { .driver_data = MT_CLS_NSMU,
2168 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
2169 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
2170
2171 /* CJTouch panels */
2172 { .driver_data = MT_CLS_NSMU,
2173 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
2174 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
2175 { .driver_data = MT_CLS_NSMU,
2176 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
2177 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
2178
2179 /* CVTouch panels */
2180 { .driver_data = MT_CLS_NSMU,
2181 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
2182 USB_DEVICE_ID_CVTOUCH_SCREEN) },
2183
2184 /* eGalax devices (SAW) */
2185 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
2186 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2187 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) },
2188
2189 /* eGalax devices (resistive) */
2190 { .driver_data = MT_CLS_EGALAX,
2191 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2192 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
2193 { .driver_data = MT_CLS_EGALAX,
2194 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2195 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
2196
2197 /* eGalax devices (capacitive) */
2198 { .driver_data = MT_CLS_EGALAX_SERIAL,
2199 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2200 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
2201 { .driver_data = MT_CLS_EGALAX,
2202 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2203 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
2204 { .driver_data = MT_CLS_EGALAX_SERIAL,
2205 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2206 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
2207 { .driver_data = MT_CLS_EGALAX_SERIAL,
2208 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2209 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
2210 { .driver_data = MT_CLS_EGALAX_SERIAL,
2211 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2212 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
2213 { .driver_data = MT_CLS_EGALAX_SERIAL,
2214 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2215 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
2216 { .driver_data = MT_CLS_EGALAX,
2217 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2218 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
2219 { .driver_data = MT_CLS_EGALAX,
2220 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2221 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
2222 { .driver_data = MT_CLS_EGALAX_SERIAL,
2223 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2224 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
2225 { .driver_data = MT_CLS_EGALAX,
2226 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
2227 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
2228 { .driver_data = MT_CLS_EGALAX,
2229 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
2230 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
2231 { .driver_data = MT_CLS_EGALAX,
2232 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2233 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
2234 { .driver_data = MT_CLS_EGALAX,
2235 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2236 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
2237 { .driver_data = MT_CLS_EGALAX_SERIAL,
2238 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2239 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
2240 { .driver_data = MT_CLS_EGALAX_SERIAL,
2241 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2242 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
2243 { .driver_data = MT_CLS_EGALAX_SERIAL,
2244 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2245 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
2246 { .driver_data = MT_CLS_EGALAX_SERIAL,
2247 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2248 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C000) },
2249 { .driver_data = MT_CLS_EGALAX_P80H84,
2250 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
2251 USB_VENDOR_ID_DWAV,
2252 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) },
2253
2254 /* Elan devices */
2255 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2256 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2257 USB_VENDOR_ID_ELAN, 0x313a) },
2258
2259 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2260 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2261 USB_VENDOR_ID_ELAN, 0x3148) },
2262
2263 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
2264 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2265 USB_VENDOR_ID_ELAN, 0x32ae) },
2266
2267 /* Elitegroup panel */
2268 { .driver_data = MT_CLS_SERIAL,
2269 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
2270 USB_DEVICE_ID_ELITEGROUP_05D8) },
2271
2272 /* Flatfrog Panels */
2273 { .driver_data = MT_CLS_FLATFROG,
2274 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
2275 USB_DEVICE_ID_MULTITOUCH_3200) },
2276
2277 /* FocalTech Panels */
2278 { .driver_data = MT_CLS_SERIAL,
2279 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
2280 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
2281
2282 /* GeneralTouch panel */
2283 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
2284 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2285 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
2286 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2287 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2288 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
2289 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
2290 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2291 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
2292 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2293 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2294 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
2295 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2296 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2297 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
2298 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2299 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2300 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
2301 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2302 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2303 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
2304
2305 /* Gametel game controller */
2306 { .driver_data = MT_CLS_NSMU,
2307 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
2308 USB_DEVICE_ID_GAMETEL_MT_MODE) },
2309
2310 /* Goodix GT7868Q devices */
2311 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
2312 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX,
2313 I2C_DEVICE_ID_GOODIX_01E8) },
2314 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
2315 HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX,
2316 I2C_DEVICE_ID_GOODIX_01E9) },
2317
2318 /* GoodTouch panels */
2319 { .driver_data = MT_CLS_NSMU,
2320 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
2321 USB_DEVICE_ID_GOODTOUCH_000f) },
2322
2323 /* Hanvon panels */
2324 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
2325 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
2326 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
2327
2328 /* HONOR GLO-GXXX panel */
2329 { .driver_data = MT_CLS_VTL,
2330 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2331 0x347d, 0x7853) },
2332
2333 /* HONOR MagicBook Art 14 touchpad */
2334 { .driver_data = MT_CLS_VTL,
2335 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2336 0x35cc, 0x0104) },
2337
2338 /* Ilitek dual touch panel */
2339 { .driver_data = MT_CLS_NSMU,
2340 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
2341 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
2342
2343 /* LG Melfas panel */
2344 { .driver_data = MT_CLS_LG,
2345 HID_USB_DEVICE(USB_VENDOR_ID_LG,
2346 USB_DEVICE_ID_LG_MELFAS_MT) },
2347 { .driver_data = MT_CLS_LG,
2348 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC,
2349 USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) },
2350
2351 /* Lenovo X1 TAB Gen 1 */
2352 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2353 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2354 USB_VENDOR_ID_LENOVO,
2355 USB_DEVICE_ID_LENOVO_X1_TAB) },
2356
2357 /* Lenovo X1 TAB Gen 2 */
2358 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2359 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2360 USB_VENDOR_ID_LENOVO,
2361 USB_DEVICE_ID_LENOVO_X1_TAB2) },
2362
2363 /* Lenovo X1 TAB Gen 3 */
2364 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2365 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2366 USB_VENDOR_ID_LENOVO,
2367 USB_DEVICE_ID_LENOVO_X1_TAB3) },
2368
2369 /* Lenovo X12 TAB Gen 1 */
2370 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
2371 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2372 USB_VENDOR_ID_LENOVO,
2373 USB_DEVICE_ID_LENOVO_X12_TAB) },
2374
2375 /* Lenovo X12 TAB Gen 2 */
2376 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
2377 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2378 USB_VENDOR_ID_LENOVO,
2379 USB_DEVICE_ID_LENOVO_X12_TAB2) },
2380
2381 /* Lenovo Yoga Book 9i */
2382 { .driver_data = MT_CLS_YOGABOOK9I,
2383 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2384 USB_VENDOR_ID_LENOVO,
2385 USB_DEVICE_ID_LENOVO_YOGABOOK9I) },
2386
2387 /* Logitech devices */
2388 { .driver_data = MT_CLS_NSMU,
2389 HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH_WIN_8,
2390 USB_VENDOR_ID_LOGITECH,
2391 USB_DEVICE_ID_LOGITECH_CASA_TOUCHPAD) },
2392 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
2393 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2394 USB_VENDOR_ID_LOGITECH,
2395 USB_DEVICE_ID_LOGITECH_BOLT_RECEIVER) },
2396
2397 /* MosArt panels */
2398 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2399 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
2400 USB_DEVICE_ID_ASUS_T91MT)},
2401 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2402 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
2403 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
2404 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2405 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
2406 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
2407
2408 /* Novatek Panel */
2409 { .driver_data = MT_CLS_NSMU,
2410 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
2411 USB_DEVICE_ID_NOVATEK_PCT) },
2412
2413 /* Ntrig Panel */
2414 { .driver_data = MT_CLS_NSMU,
2415 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2416 USB_VENDOR_ID_NTRIG, 0x1b05) },
2417
2418 /* Panasonic panels */
2419 { .driver_data = MT_CLS_PANASONIC,
2420 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
2421 USB_DEVICE_ID_PANABOARD_UBT780) },
2422 { .driver_data = MT_CLS_PANASONIC,
2423 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
2424 USB_DEVICE_ID_PANABOARD_UBT880) },
2425
2426 /* PixArt optical touch screen */
2427 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2428 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2429 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
2430 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2431 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2432 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
2433 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2434 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2435 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
2436
2437 /* PixCir-based panels */
2438 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
2439 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
2440 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
2441
2442 /* Quanta-based panels */
2443 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
2444 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
2445 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
2446
2447 /* Razer touchpads */
2448 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH,
2449 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2450 USB_VENDOR_ID_SYNAPTICS, 0x8323) },
2451
2452 /* Smart Tech panels */
2453 { .driver_data = MT_CLS_SMART_TECH,
2454 MT_USB_DEVICE(0x0b8c, 0x0092)},
2455
2456 /* Stantum panels */
2457 { .driver_data = MT_CLS_CONFIDENCE,
2458 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
2459 USB_DEVICE_ID_MTP_STM)},
2460
2461 /* Synaptics devices */
2462 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2463 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2464 USB_VENDOR_ID_SYNAPTICS, 0xcd7e) },
2465
2466 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2467 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2468 USB_VENDOR_ID_SYNAPTICS, 0xcddc) },
2469
2470 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2471 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2472 USB_VENDOR_ID_SYNAPTICS, 0xce08) },
2473
2474 { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2475 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2476 USB_VENDOR_ID_SYNAPTICS, 0xce09) },
2477
2478 /* TopSeed panels */
2479 { .driver_data = MT_CLS_TOPSEED,
2480 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
2481 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
2482
2483 /* Touch International panels */
2484 { .driver_data = MT_CLS_NSMU,
2485 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
2486 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
2487
2488 /* Unitec panels */
2489 { .driver_data = MT_CLS_NSMU,
2490 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2491 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
2492 { .driver_data = MT_CLS_NSMU,
2493 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2494 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
2495
2496 /* Uniwill touchpads */
2497 { .driver_data = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE,
2498 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2499 USB_VENDOR_ID_PIXART, 0x0255) },
2500 { .driver_data = MT_CLS_WIN_8_KEEP_LATENCY_ON_CLOSE,
2501 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2502 USB_VENDOR_ID_PIXART, 0x0274) },
2503
2504 /* VTL panels */
2505 { .driver_data = MT_CLS_VTL,
2506 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
2507 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
2508
2509 /* Winbond Electronics Corp. */
2510 { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS,
2511 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
2512 USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) },
2513
2514 /* Wistron panels */
2515 { .driver_data = MT_CLS_NSMU,
2516 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
2517 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
2518
2519 /* XAT */
2520 { .driver_data = MT_CLS_NSMU,
2521 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
2522 USB_DEVICE_ID_XAT_CSR) },
2523
2524 /* Xiroku */
2525 { .driver_data = MT_CLS_NSMU,
2526 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2527 USB_DEVICE_ID_XIROKU_SPX) },
2528 { .driver_data = MT_CLS_NSMU,
2529 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2530 USB_DEVICE_ID_XIROKU_MPX) },
2531 { .driver_data = MT_CLS_NSMU,
2532 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2533 USB_DEVICE_ID_XIROKU_CSR) },
2534 { .driver_data = MT_CLS_NSMU,
2535 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2536 USB_DEVICE_ID_XIROKU_SPX1) },
2537 { .driver_data = MT_CLS_NSMU,
2538 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2539 USB_DEVICE_ID_XIROKU_MPX1) },
2540 { .driver_data = MT_CLS_NSMU,
2541 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2542 USB_DEVICE_ID_XIROKU_CSR1) },
2543 { .driver_data = MT_CLS_NSMU,
2544 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2545 USB_DEVICE_ID_XIROKU_SPX2) },
2546 { .driver_data = MT_CLS_NSMU,
2547 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2548 USB_DEVICE_ID_XIROKU_MPX2) },
2549 { .driver_data = MT_CLS_NSMU,
2550 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2551 USB_DEVICE_ID_XIROKU_CSR2) },
2552
2553 /* Apple Touch Bar */
2554 { .driver_data = MT_CLS_APPLE_TOUCHBAR,
2555 HID_USB_DEVICE(USB_VENDOR_ID_APPLE,
2556 USB_DEVICE_ID_APPLE_TOUCHBAR_DISPLAY) },
2557
2558 /* Google MT devices */
2559 { .driver_data = MT_CLS_GOOGLE,
2560 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
2561 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
2562 { .driver_data = MT_CLS_GOOGLE,
2563 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE,
2564 USB_DEVICE_ID_GOOGLE_WHISKERS) },
2565
2566 /* sis */
2567 { .driver_data = MT_CLS_SIS,
2568 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_SIS_TOUCH,
2569 HID_ANY_ID) },
2570
2571 /* Hantick */
2572 { .driver_data = MT_CLS_NSMU,
2573 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2574 I2C_VENDOR_ID_HANTICK, I2C_PRODUCT_ID_HANTICK_5288) },
2575
2576 /* Generic MT device */
2577 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
2578
2579 /* Generic Win 8 certified MT device */
2580 { .driver_data = MT_CLS_WIN_8,
2581 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
2582 HID_ANY_ID, HID_ANY_ID) },
2583 { }
2584 };
2585 MODULE_DEVICE_TABLE(hid, mt_devices);
2586
2587 static const struct hid_usage_id mt_grabbed_usages[] = {
2588 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
2589 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
2590 };
2591
2592 static struct hid_driver mt_driver = {
2593 .name = "hid-multitouch",
2594 .id_table = mt_devices,
2595 .probe = mt_probe,
2596 .remove = mt_remove,
2597 .input_mapping = mt_input_mapping,
2598 .input_mapped = mt_input_mapped,
2599 .input_configured = mt_input_configured,
2600 .feature_mapping = mt_feature_mapping,
2601 .usage_table = mt_grabbed_usages,
2602 .event = mt_event,
2603 .report_fixup = mt_report_fixup,
2604 .report = mt_report,
2605 .suspend = pm_ptr(mt_suspend),
2606 .reset_resume = pm_ptr(mt_reset_resume),
2607 .resume = pm_ptr(mt_resume),
2608 .on_hid_hw_open = mt_on_hid_hw_open,
2609 .on_hid_hw_close = mt_on_hid_hw_close,
2610 };
2611 module_hid_driver(mt_driver);
2612