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x86/mm/pat: Don't report PAT on CPUs that don't support it
[linux/fpc-iii.git] / drivers / hid / hid-multitouch.c
blob692647485a53b3316ec442518b0b84648113dda9
1 /*
2 * HID driver for multitouch panels
3 *
4 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
5 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
6 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
7 * Copyright (c) 2012-2013 Red Hat, Inc
8 *
9 * This code is partly based on hid-egalax.c:
10 *
11 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
12 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
13 * Copyright (c) 2010 Canonical, Ltd.
14 *
15 * This code is partly based on hid-3m-pct.c:
16 *
17 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
18 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
19 * Copyright (c) 2010 Canonical, Ltd.
20 *
21 */
22
23 /*
24 * This program is free software; you can redistribute it and/or modify it
25 * under the terms of the GNU General Public License as published by the Free
26 * Software Foundation; either version 2 of the License, or (at your option)
27 * any later version.
28 */
29
30 /*
31 * This driver is regularly tested thanks to the tool hid-test[1].
32 * This tool relies on hid-replay[2] and a database of hid devices[3].
33 * Please run these regression tests before patching this module so that
34 * your patch won't break existing known devices.
35 *
36 * [1] https://github.com/bentiss/hid-test
37 * [2] https://github.com/bentiss/hid-replay
38 * [3] https://github.com/bentiss/hid-devices
39 */
40
41 #include <linux/device.h>
42 #include <linux/hid.h>
43 #include <linux/module.h>
44 #include <linux/slab.h>
45 #include <linux/input/mt.h>
46 #include <linux/string.h>
47
48
49 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
50 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
51 MODULE_DESCRIPTION("HID multitouch panels");
52 MODULE_LICENSE("GPL");
53
54 #include "hid-ids.h"
55
56 /* quirks to control the device */
57 #define MT_QUIRK_NOT_SEEN_MEANS_UP (1 << 0)
58 #define MT_QUIRK_SLOT_IS_CONTACTID (1 << 1)
59 #define MT_QUIRK_CYPRESS (1 << 2)
60 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER (1 << 3)
61 #define MT_QUIRK_ALWAYS_VALID (1 << 4)
62 #define MT_QUIRK_VALID_IS_INRANGE (1 << 5)
63 #define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 6)
64 #define MT_QUIRK_CONFIDENCE (1 << 7)
65 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 8)
66 #define MT_QUIRK_NO_AREA (1 << 9)
67 #define MT_QUIRK_IGNORE_DUPLICATES (1 << 10)
68 #define MT_QUIRK_HOVERING (1 << 11)
69 #define MT_QUIRK_CONTACT_CNT_ACCURATE (1 << 12)
70 #define MT_QUIRK_FORCE_GET_FEATURE (1 << 13)
71 #define MT_QUIRK_FIX_CONST_CONTACT_ID (1 << 14)
72
73 #define MT_INPUTMODE_TOUCHSCREEN 0x02
74 #define MT_INPUTMODE_TOUCHPAD 0x03
75
76 #define MT_BUTTONTYPE_CLICKPAD 0
77
78 struct mt_slot {
79 __s32 x, y, cx, cy, p, w, h;
80 __s32 contactid; /* the device ContactID assigned to this slot */
81 bool touch_state; /* is the touch valid? */
82 bool inrange_state; /* is the finger in proximity of the sensor? */
83 bool confidence_state; /* is the touch made by a finger? */
84 };
85
86 struct mt_class {
87 __s32 name; /* MT_CLS */
88 __s32 quirks;
89 __s32 sn_move; /* Signal/noise ratio for move events */
90 __s32 sn_width; /* Signal/noise ratio for width events */
91 __s32 sn_height; /* Signal/noise ratio for height events */
92 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
93 __u8 maxcontacts;
94 bool is_indirect; /* true for touchpads */
95 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
96 };
97
98 struct mt_fields {
99 unsigned usages[HID_MAX_FIELDS];
100 unsigned int length;
101 };
102
103 struct mt_device {
104 struct mt_slot curdata; /* placeholder of incoming data */
105 struct mt_class mtclass; /* our mt device class */
106 struct mt_fields *fields; /* temporary placeholder for storing the
107 multitouch fields */
108 int cc_index; /* contact count field index in the report */
109 int cc_value_index; /* contact count value index in the field */
110 unsigned last_slot_field; /* the last field of a slot */
111 unsigned mt_report_id; /* the report ID of the multitouch device */
112 unsigned long initial_quirks; /* initial quirks state */
113 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */
114 __s16 inputmode_index; /* InputMode HID feature index in the report */
115 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature,
116 -1 if non-existent */
117 __u8 inputmode_value; /* InputMode HID feature value */
118 __u8 num_received; /* how many contacts we received */
119 __u8 num_expected; /* expected last contact index */
120 __u8 maxcontacts;
121 __u8 touches_by_report; /* how many touches are present in one report:
122 * 1 means we should use a serial protocol
123 * > 1 means hybrid (multitouch) protocol */
124 __u8 buttons_count; /* number of physical buttons per touchpad */
125 bool is_buttonpad; /* is this device a button pad? */
126 bool serial_maybe; /* need to check for serial protocol */
127 bool curvalid; /* is the current contact valid? */
128 unsigned mt_flags; /* flags to pass to input-mt */
129 };
130
131 static void mt_post_parse_default_settings(struct mt_device *td);
132 static void mt_post_parse(struct mt_device *td);
133
134 /* classes of device behavior */
135 #define MT_CLS_DEFAULT 0x0001
136
137 #define MT_CLS_SERIAL 0x0002
138 #define MT_CLS_CONFIDENCE 0x0003
139 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
140 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
141 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
142 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
143 /* reserved 0x0008 */
144 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
145 #define MT_CLS_NSMU 0x000a
146 /* reserved 0x0010 */
147 /* reserved 0x0011 */
148 #define MT_CLS_WIN_8 0x0012
149 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
150
151 /* vendor specific classes */
152 #define MT_CLS_3M 0x0101
153 /* reserved 0x0102 */
154 #define MT_CLS_EGALAX 0x0103
155 #define MT_CLS_EGALAX_SERIAL 0x0104
156 #define MT_CLS_TOPSEED 0x0105
157 #define MT_CLS_PANASONIC 0x0106
158 #define MT_CLS_FLATFROG 0x0107
159 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
160 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
161 #define MT_CLS_LG 0x010a
162 #define MT_CLS_VTL 0x0110
163
164 #define MT_DEFAULT_MAXCONTACT 10
165 #define MT_MAX_MAXCONTACT 250
166
167 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
168 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
169
170 /*
171 * these device-dependent functions determine what slot corresponds
172 * to a valid contact that was just read.
173 */
174
175 static int cypress_compute_slot(struct mt_device *td)
176 {
177 if (td->curdata.contactid != 0 || td->num_received == 0)
178 return td->curdata.contactid;
179 else
180 return -1;
181 }
182
183 static struct mt_class mt_classes[] = {
184 { .name = MT_CLS_DEFAULT,
185 .quirks = MT_QUIRK_ALWAYS_VALID |
186 MT_QUIRK_CONTACT_CNT_ACCURATE },
187 { .name = MT_CLS_NSMU,
188 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
189 { .name = MT_CLS_SERIAL,
190 .quirks = MT_QUIRK_ALWAYS_VALID},
191 { .name = MT_CLS_CONFIDENCE,
192 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
193 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
194 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
195 MT_QUIRK_SLOT_IS_CONTACTID },
196 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
197 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
198 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
199 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
200 .quirks = MT_QUIRK_VALID_IS_INRANGE |
201 MT_QUIRK_SLOT_IS_CONTACTID,
202 .maxcontacts = 2 },
203 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
204 .quirks = MT_QUIRK_VALID_IS_INRANGE |
205 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
206 .maxcontacts = 2 },
207 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
208 .quirks = MT_QUIRK_VALID_IS_INRANGE |
209 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
210 { .name = MT_CLS_WIN_8,
211 .quirks = MT_QUIRK_ALWAYS_VALID |
212 MT_QUIRK_IGNORE_DUPLICATES |
213 MT_QUIRK_HOVERING |
214 MT_QUIRK_CONTACT_CNT_ACCURATE },
215 { .name = MT_CLS_EXPORT_ALL_INPUTS,
216 .quirks = MT_QUIRK_ALWAYS_VALID |
217 MT_QUIRK_CONTACT_CNT_ACCURATE,
218 .export_all_inputs = true },
219
220 /*
221 * vendor specific classes
222 */
223 { .name = MT_CLS_3M,
224 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
225 MT_QUIRK_SLOT_IS_CONTACTID,
226 .sn_move = 2048,
227 .sn_width = 128,
228 .sn_height = 128,
229 .maxcontacts = 60,
230 },
231 { .name = MT_CLS_EGALAX,
232 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
233 MT_QUIRK_VALID_IS_INRANGE,
234 .sn_move = 4096,
235 .sn_pressure = 32,
236 },
237 { .name = MT_CLS_EGALAX_SERIAL,
238 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
239 MT_QUIRK_ALWAYS_VALID,
240 .sn_move = 4096,
241 .sn_pressure = 32,
242 },
243 { .name = MT_CLS_TOPSEED,
244 .quirks = MT_QUIRK_ALWAYS_VALID,
245 .is_indirect = true,
246 .maxcontacts = 2,
247 },
248 { .name = MT_CLS_PANASONIC,
249 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
250 .maxcontacts = 4 },
251 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
252 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
253 MT_QUIRK_VALID_IS_INRANGE |
254 MT_QUIRK_SLOT_IS_CONTACTID,
255 .maxcontacts = 2
256 },
257 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
258 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
259 MT_QUIRK_SLOT_IS_CONTACTID
260 },
261
262 { .name = MT_CLS_FLATFROG,
263 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
264 MT_QUIRK_NO_AREA,
265 .sn_move = 2048,
266 .maxcontacts = 40,
267 },
268 { .name = MT_CLS_LG,
269 .quirks = MT_QUIRK_ALWAYS_VALID |
270 MT_QUIRK_FIX_CONST_CONTACT_ID |
271 MT_QUIRK_IGNORE_DUPLICATES |
272 MT_QUIRK_HOVERING |
273 MT_QUIRK_CONTACT_CNT_ACCURATE },
274 { .name = MT_CLS_VTL,
275 .quirks = MT_QUIRK_ALWAYS_VALID |
276 MT_QUIRK_CONTACT_CNT_ACCURATE |
277 MT_QUIRK_FORCE_GET_FEATURE,
278 },
279 { }
280 };
281
282 static ssize_t mt_show_quirks(struct device *dev,
283 struct device_attribute *attr,
284 char *buf)
285 {
286 struct hid_device *hdev = to_hid_device(dev);
287 struct mt_device *td = hid_get_drvdata(hdev);
288
289 return sprintf(buf, "%u\n", td->mtclass.quirks);
290 }
291
292 static ssize_t mt_set_quirks(struct device *dev,
293 struct device_attribute *attr,
294 const char *buf, size_t count)
295 {
296 struct hid_device *hdev = to_hid_device(dev);
297 struct mt_device *td = hid_get_drvdata(hdev);
298
299 unsigned long val;
300
301 if (kstrtoul(buf, 0, &val))
302 return -EINVAL;
303
304 td->mtclass.quirks = val;
305
306 if (td->cc_index < 0)
307 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
308
309 return count;
310 }
311
312 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
313
314 static struct attribute *sysfs_attrs[] = {
315 &dev_attr_quirks.attr,
316 NULL
317 };
318
319 static struct attribute_group mt_attribute_group = {
320 .attrs = sysfs_attrs
321 };
322
323 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
324 {
325 struct mt_device *td = hid_get_drvdata(hdev);
326 int ret, size = hid_report_len(report);
327 u8 *buf;
328
329 /*
330 * Do not fetch the feature report if the device has been explicitly
331 * marked as non-capable.
332 */
333 if (td->initial_quirks & HID_QUIRK_NO_INIT_REPORTS)
334 return;
335
336 buf = hid_alloc_report_buf(report, GFP_KERNEL);
337 if (!buf)
338 return;
339
340 ret = hid_hw_raw_request(hdev, report->id, buf, size,
341 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
342 if (ret < 0) {
343 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
344 report->id);
345 } else {
346 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
347 size, 0);
348 if (ret)
349 dev_warn(&hdev->dev, "failed to report feature\n");
350 }
351
352 kfree(buf);
353 }
354
355 static void mt_feature_mapping(struct hid_device *hdev,
356 struct hid_field *field, struct hid_usage *usage)
357 {
358 struct mt_device *td = hid_get_drvdata(hdev);
359
360 switch (usage->hid) {
361 case HID_DG_INPUTMODE:
362 /* Ignore if value index is out of bounds. */
363 if (usage->usage_index >= field->report_count) {
364 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
365 break;
366 }
367
368 if (td->inputmode < 0) {
369 td->inputmode = field->report->id;
370 td->inputmode_index = usage->usage_index;
371 } else {
372 /*
373 * Some elan panels wrongly declare 2 input mode
374 * features, and silently ignore when we set the
375 * value in the second field. Skip the second feature
376 * and hope for the best.
377 */
378 dev_info(&hdev->dev,
379 "Ignoring the extra HID_DG_INPUTMODE\n");
380 }
381
382 break;
383 case HID_DG_CONTACTMAX:
384 mt_get_feature(hdev, field->report);
385
386 td->maxcontact_report_id = field->report->id;
387 td->maxcontacts = field->value[0];
388 if (!td->maxcontacts &&
389 field->logical_maximum <= MT_MAX_MAXCONTACT)
390 td->maxcontacts = field->logical_maximum;
391 if (td->mtclass.maxcontacts)
392 /* check if the maxcontacts is given by the class */
393 td->maxcontacts = td->mtclass.maxcontacts;
394
395 break;
396 case HID_DG_BUTTONTYPE:
397 if (usage->usage_index >= field->report_count) {
398 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
399 break;
400 }
401
402 mt_get_feature(hdev, field->report);
403 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
404 td->is_buttonpad = true;
405
406 break;
407 case 0xff0000c5:
408 /* Retrieve the Win8 blob once to enable some devices */
409 if (usage->usage_index == 0)
410 mt_get_feature(hdev, field->report);
411 break;
412 }
413 }
414
415 static void set_abs(struct input_dev *input, unsigned int code,
416 struct hid_field *field, int snratio)
417 {
418 int fmin = field->logical_minimum;
419 int fmax = field->logical_maximum;
420 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
421 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
422 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
423 }
424
425 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
426 struct hid_input *hi)
427 {
428 struct mt_fields *f = td->fields;
429
430 if (f->length >= HID_MAX_FIELDS)
431 return;
432
433 f->usages[f->length++] = usage->hid;
434 }
435
436 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
437 struct hid_field *field, struct hid_usage *usage,
438 unsigned long **bit, int *max)
439 {
440 struct mt_device *td = hid_get_drvdata(hdev);
441 struct mt_class *cls = &td->mtclass;
442 int code;
443 struct hid_usage *prev_usage = NULL;
444
445 if (field->application == HID_DG_TOUCHSCREEN)
446 td->mt_flags |= INPUT_MT_DIRECT;
447
448 /*
449 * Model touchscreens providing buttons as touchpads.
450 */
451 if (field->application == HID_DG_TOUCHPAD ||
452 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
453 td->mt_flags |= INPUT_MT_POINTER;
454 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
455 }
456
457 /* count the buttons on touchpads */
458 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
459 td->buttons_count++;
460
461 if (usage->usage_index)
462 prev_usage = &field->usage[usage->usage_index - 1];
463
464 switch (usage->hid & HID_USAGE_PAGE) {
465
466 case HID_UP_GENDESK:
467 switch (usage->hid) {
468 case HID_GD_X:
469 if (prev_usage && (prev_usage->hid == usage->hid)) {
470 hid_map_usage(hi, usage, bit, max,
471 EV_ABS, ABS_MT_TOOL_X);
472 set_abs(hi->input, ABS_MT_TOOL_X, field,
473 cls->sn_move);
474 } else {
475 hid_map_usage(hi, usage, bit, max,
476 EV_ABS, ABS_MT_POSITION_X);
477 set_abs(hi->input, ABS_MT_POSITION_X, field,
478 cls->sn_move);
479 }
480
481 mt_store_field(usage, td, hi);
482 return 1;
483 case HID_GD_Y:
484 if (prev_usage && (prev_usage->hid == usage->hid)) {
485 hid_map_usage(hi, usage, bit, max,
486 EV_ABS, ABS_MT_TOOL_Y);
487 set_abs(hi->input, ABS_MT_TOOL_Y, field,
488 cls->sn_move);
489 } else {
490 hid_map_usage(hi, usage, bit, max,
491 EV_ABS, ABS_MT_POSITION_Y);
492 set_abs(hi->input, ABS_MT_POSITION_Y, field,
493 cls->sn_move);
494 }
495
496 mt_store_field(usage, td, hi);
497 return 1;
498 }
499 return 0;
500
501 case HID_UP_DIGITIZER:
502 switch (usage->hid) {
503 case HID_DG_INRANGE:
504 if (cls->quirks & MT_QUIRK_HOVERING) {
505 hid_map_usage(hi, usage, bit, max,
506 EV_ABS, ABS_MT_DISTANCE);
507 input_set_abs_params(hi->input,
508 ABS_MT_DISTANCE, 0, 1, 0, 0);
509 }
510 mt_store_field(usage, td, hi);
511 return 1;
512 case HID_DG_CONFIDENCE:
513 if (cls->name == MT_CLS_WIN_8 &&
514 field->application == HID_DG_TOUCHPAD)
515 cls->quirks |= MT_QUIRK_CONFIDENCE;
516 mt_store_field(usage, td, hi);
517 return 1;
518 case HID_DG_TIPSWITCH:
519 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
520 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
521 mt_store_field(usage, td, hi);
522 return 1;
523 case HID_DG_CONTACTID:
524 mt_store_field(usage, td, hi);
525 td->touches_by_report++;
526 td->mt_report_id = field->report->id;
527 return 1;
528 case HID_DG_WIDTH:
529 hid_map_usage(hi, usage, bit, max,
530 EV_ABS, ABS_MT_TOUCH_MAJOR);
531 if (!(cls->quirks & MT_QUIRK_NO_AREA))
532 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
533 cls->sn_width);
534 mt_store_field(usage, td, hi);
535 return 1;
536 case HID_DG_HEIGHT:
537 hid_map_usage(hi, usage, bit, max,
538 EV_ABS, ABS_MT_TOUCH_MINOR);
539 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
540 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
541 cls->sn_height);
542 input_set_abs_params(hi->input,
543 ABS_MT_ORIENTATION, 0, 1, 0, 0);
544 }
545 mt_store_field(usage, td, hi);
546 return 1;
547 case HID_DG_TIPPRESSURE:
548 hid_map_usage(hi, usage, bit, max,
549 EV_ABS, ABS_MT_PRESSURE);
550 set_abs(hi->input, ABS_MT_PRESSURE, field,
551 cls->sn_pressure);
552 mt_store_field(usage, td, hi);
553 return 1;
554 case HID_DG_CONTACTCOUNT:
555 /* Ignore if indexes are out of bounds. */
556 if (field->index >= field->report->maxfield ||
557 usage->usage_index >= field->report_count)
558 return 1;
559 td->cc_index = field->index;
560 td->cc_value_index = usage->usage_index;
561 return 1;
562 case HID_DG_CONTACTMAX:
563 /* we don't set td->last_slot_field as contactcount and
564 * contact max are global to the report */
565 return -1;
566 case HID_DG_TOUCH:
567 /* Legacy devices use TIPSWITCH and not TOUCH.
568 * Let's just ignore this field. */
569 return -1;
570 }
571 /* let hid-input decide for the others */
572 return 0;
573
574 case HID_UP_BUTTON:
575 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
576 /*
577 * MS PTP spec says that external buttons left and right have
578 * usages 2 and 3.
579 */
580 if (cls->name == MT_CLS_WIN_8 &&
581 field->application == HID_DG_TOUCHPAD &&
582 (usage->hid & HID_USAGE) > 1)
583 code--;
584 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
585 input_set_capability(hi->input, EV_KEY, code);
586 return 1;
587
588 case 0xff000000:
589 /* we do not want to map these: no input-oriented meaning */
590 return -1;
591 }
592
593 return 0;
594 }
595
596 static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi,
597 struct hid_field *field, struct hid_usage *usage,
598 unsigned long **bit, int *max)
599 {
600 if (usage->type == EV_KEY || usage->type == EV_ABS)
601 set_bit(usage->type, hi->input->evbit);
602
603 return -1;
604 }
605
606 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
607 {
608 __s32 quirks = td->mtclass.quirks;
609
610 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
611 return td->curdata.contactid;
612
613 if (quirks & MT_QUIRK_CYPRESS)
614 return cypress_compute_slot(td);
615
616 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
617 return td->num_received;
618
619 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
620 return td->curdata.contactid - 1;
621
622 return input_mt_get_slot_by_key(input, td->curdata.contactid);
623 }
624
625 /*
626 * this function is called when a whole contact has been processed,
627 * so that it can assign it to a slot and store the data there
628 */
629 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
630 {
631 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
632 td->num_received >= td->num_expected)
633 return;
634
635 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
636 int active;
637 int slotnum = mt_compute_slot(td, input);
638 struct mt_slot *s = &td->curdata;
639 struct input_mt *mt = input->mt;
640
641 if (slotnum < 0 || slotnum >= td->maxcontacts)
642 return;
643
644 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
645 struct input_mt_slot *slot = &mt->slots[slotnum];
646 if (input_mt_is_active(slot) &&
647 input_mt_is_used(mt, slot))
648 return;
649 }
650
651 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE))
652 s->confidence_state = 1;
653 active = (s->touch_state || s->inrange_state) &&
654 s->confidence_state;
655
656 input_mt_slot(input, slotnum);
657 input_mt_report_slot_state(input, MT_TOOL_FINGER, active);
658 if (active) {
659 /* this finger is in proximity of the sensor */
660 int wide = (s->w > s->h);
661 /* divided by two to match visual scale of touch */
662 int major = max(s->w, s->h) >> 1;
663 int minor = min(s->w, s->h) >> 1;
664
665 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
666 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
667 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
668 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
669 input_event(input, EV_ABS, ABS_MT_DISTANCE,
670 !s->touch_state);
671 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
672 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
673 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
674 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
675 }
676 }
677
678 td->num_received++;
679 }
680
681 /*
682 * this function is called when a whole packet has been received and processed,
683 * so that it can decide what to send to the input layer.
684 */
685 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
686 {
687 input_mt_sync_frame(input);
688 input_sync(input);
689 td->num_received = 0;
690 }
691
692 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
693 struct hid_usage *usage, __s32 value)
694 {
695 /* we will handle the hidinput part later, now remains hiddev */
696 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
697 hid->hiddev_hid_event(hid, field, usage, value);
698
699 return 1;
700 }
701
702 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
703 struct hid_usage *usage, __s32 value)
704 {
705 struct mt_device *td = hid_get_drvdata(hid);
706 __s32 quirks = td->mtclass.quirks;
707 struct input_dev *input = field->hidinput->input;
708
709 if (hid->claimed & HID_CLAIMED_INPUT) {
710 switch (usage->hid) {
711 case HID_DG_INRANGE:
712 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
713 td->curvalid = value;
714 if (quirks & MT_QUIRK_HOVERING)
715 td->curdata.inrange_state = value;
716 break;
717 case HID_DG_TIPSWITCH:
718 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
719 td->curvalid = value;
720 td->curdata.touch_state = value;
721 break;
722 case HID_DG_CONFIDENCE:
723 if (quirks & MT_QUIRK_CONFIDENCE)
724 td->curdata.confidence_state = value;
725 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
726 td->curvalid = value;
727 break;
728 case HID_DG_CONTACTID:
729 td->curdata.contactid = value;
730 break;
731 case HID_DG_TIPPRESSURE:
732 td->curdata.p = value;
733 break;
734 case HID_GD_X:
735 if (usage->code == ABS_MT_TOOL_X)
736 td->curdata.cx = value;
737 else
738 td->curdata.x = value;
739 break;
740 case HID_GD_Y:
741 if (usage->code == ABS_MT_TOOL_Y)
742 td->curdata.cy = value;
743 else
744 td->curdata.y = value;
745 break;
746 case HID_DG_WIDTH:
747 td->curdata.w = value;
748 break;
749 case HID_DG_HEIGHT:
750 td->curdata.h = value;
751 break;
752 case HID_DG_CONTACTCOUNT:
753 break;
754 case HID_DG_TOUCH:
755 /* do nothing */
756 break;
757
758 default:
759 if (usage->type)
760 input_event(input, usage->type, usage->code,
761 value);
762 return;
763 }
764
765 if (usage->usage_index + 1 == field->report_count) {
766 /* we only take into account the last report. */
767 if (usage->hid == td->last_slot_field)
768 mt_complete_slot(td, field->hidinput->input);
769 }
770
771 }
772 }
773
774 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
775 {
776 struct mt_device *td = hid_get_drvdata(hid);
777 struct hid_field *field;
778 unsigned count;
779 int r, n;
780
781 /*
782 * Includes multi-packet support where subsequent
783 * packets are sent with zero contactcount.
784 */
785 if (td->cc_index >= 0) {
786 struct hid_field *field = report->field[td->cc_index];
787 int value = field->value[td->cc_value_index];
788 if (value)
789 td->num_expected = value;
790 }
791
792 for (r = 0; r < report->maxfield; r++) {
793 field = report->field[r];
794 count = field->report_count;
795
796 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
797 continue;
798
799 for (n = 0; n < count; n++)
800 mt_process_mt_event(hid, field, &field->usage[n],
801 field->value[n]);
802 }
803
804 if (td->num_received >= td->num_expected)
805 mt_sync_frame(td, report->field[0]->hidinput->input);
806 }
807
808 static int mt_touch_input_configured(struct hid_device *hdev,
809 struct hid_input *hi)
810 {
811 struct mt_device *td = hid_get_drvdata(hdev);
812 struct mt_class *cls = &td->mtclass;
813 struct input_dev *input = hi->input;
814 int ret;
815
816 if (!td->maxcontacts)
817 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
818
819 mt_post_parse(td);
820 if (td->serial_maybe)
821 mt_post_parse_default_settings(td);
822
823 if (cls->is_indirect)
824 td->mt_flags |= INPUT_MT_POINTER;
825
826 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
827 td->mt_flags |= INPUT_MT_DROP_UNUSED;
828
829 /* check for clickpads */
830 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
831 td->is_buttonpad = true;
832
833 if (td->is_buttonpad)
834 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
835
836 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
837 if (ret)
838 return ret;
839
840 td->mt_flags = 0;
841 return 0;
842 }
843
844 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
845 struct hid_field *field, struct hid_usage *usage,
846 unsigned long **bit, int *max)
847 {
848 struct mt_device *td = hid_get_drvdata(hdev);
849
850 /*
851 * If mtclass.export_all_inputs is not set, only map fields from
852 * TouchScreen or TouchPad collections. We need to ignore fields
853 * that belong to other collections such as Mouse that might have
854 * the same GenericDesktop usages.
855 */
856 if (!td->mtclass.export_all_inputs &&
857 field->application != HID_DG_TOUCHSCREEN &&
858 field->application != HID_DG_PEN &&
859 field->application != HID_DG_TOUCHPAD &&
860 field->application != HID_GD_KEYBOARD &&
861 field->application != HID_CP_CONSUMER_CONTROL)
862 return -1;
863
864 /*
865 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
866 * for the stylus.
867 * The check for mt_report_id ensures we don't process
868 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
869 * collection, but within the report ID.
870 */
871 if (field->physical == HID_DG_STYLUS)
872 return 0;
873 else if ((field->physical == 0) &&
874 (field->report->id != td->mt_report_id) &&
875 (td->mt_report_id != -1))
876 return 0;
877
878 if (field->application == HID_DG_TOUCHSCREEN ||
879 field->application == HID_DG_TOUCHPAD)
880 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
881
882 /* let hid-core decide for the others */
883 return 0;
884 }
885
886 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
887 struct hid_field *field, struct hid_usage *usage,
888 unsigned long **bit, int *max)
889 {
890 /*
891 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
892 * for the stylus.
893 */
894 if (field->physical == HID_DG_STYLUS)
895 return 0;
896
897 if (field->application == HID_DG_TOUCHSCREEN ||
898 field->application == HID_DG_TOUCHPAD)
899 return mt_touch_input_mapped(hdev, hi, field, usage, bit, max);
900
901 /* let hid-core decide for the others */
902 return 0;
903 }
904
905 static int mt_event(struct hid_device *hid, struct hid_field *field,
906 struct hid_usage *usage, __s32 value)
907 {
908 struct mt_device *td = hid_get_drvdata(hid);
909
910 if (field->report->id == td->mt_report_id)
911 return mt_touch_event(hid, field, usage, value);
912
913 return 0;
914 }
915
916 static void mt_report(struct hid_device *hid, struct hid_report *report)
917 {
918 struct mt_device *td = hid_get_drvdata(hid);
919 struct hid_field *field = report->field[0];
920
921 if (!(hid->claimed & HID_CLAIMED_INPUT))
922 return;
923
924 if (report->id == td->mt_report_id)
925 return mt_touch_report(hid, report);
926
927 if (field && field->hidinput && field->hidinput->input)
928 input_sync(field->hidinput->input);
929 }
930
931 static void mt_set_input_mode(struct hid_device *hdev)
932 {
933 struct mt_device *td = hid_get_drvdata(hdev);
934 struct hid_report *r;
935 struct hid_report_enum *re;
936 struct mt_class *cls = &td->mtclass;
937 char *buf;
938 int report_len;
939
940 if (td->inputmode < 0)
941 return;
942
943 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
944 r = re->report_id_hash[td->inputmode];
945 if (r) {
946 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
947 report_len = hid_report_len(r);
948 buf = hid_alloc_report_buf(r, GFP_KERNEL);
949 if (!buf) {
950 hid_err(hdev, "failed to allocate buffer for report\n");
951 return;
952 }
953 hid_hw_raw_request(hdev, r->id, buf, report_len,
954 HID_FEATURE_REPORT,
955 HID_REQ_GET_REPORT);
956 kfree(buf);
957 }
958 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
959 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
960 }
961 }
962
963 static void mt_set_maxcontacts(struct hid_device *hdev)
964 {
965 struct mt_device *td = hid_get_drvdata(hdev);
966 struct hid_report *r;
967 struct hid_report_enum *re;
968 int fieldmax, max;
969
970 if (td->maxcontact_report_id < 0)
971 return;
972
973 if (!td->mtclass.maxcontacts)
974 return;
975
976 re = &hdev->report_enum[HID_FEATURE_REPORT];
977 r = re->report_id_hash[td->maxcontact_report_id];
978 if (r) {
979 max = td->mtclass.maxcontacts;
980 fieldmax = r->field[0]->logical_maximum;
981 max = min(fieldmax, max);
982 if (r->field[0]->value[0] != max) {
983 r->field[0]->value[0] = max;
984 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
985 }
986 }
987 }
988
989 static void mt_post_parse_default_settings(struct mt_device *td)
990 {
991 __s32 quirks = td->mtclass.quirks;
992
993 /* unknown serial device needs special quirks */
994 if (td->touches_by_report == 1) {
995 quirks |= MT_QUIRK_ALWAYS_VALID;
996 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
997 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
998 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
999 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1000 }
1001
1002 td->mtclass.quirks = quirks;
1003 }
1004
1005 static void mt_post_parse(struct mt_device *td)
1006 {
1007 struct mt_fields *f = td->fields;
1008 struct mt_class *cls = &td->mtclass;
1009
1010 if (td->touches_by_report > 0) {
1011 int field_count_per_touch = f->length / td->touches_by_report;
1012 td->last_slot_field = f->usages[field_count_per_touch - 1];
1013 }
1014
1015 if (td->cc_index < 0)
1016 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1017 }
1018
1019 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1020 {
1021 struct mt_device *td = hid_get_drvdata(hdev);
1022 char *name;
1023 const char *suffix = NULL;
1024 struct hid_field *field = hi->report->field[0];
1025 int ret;
1026
1027 if (hi->report->id == td->mt_report_id) {
1028 ret = mt_touch_input_configured(hdev, hi);
1029 if (ret)
1030 return ret;
1031 }
1032
1033 /*
1034 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1035 * for the stylus. Check this first, and then rely on the application
1036 * field.
1037 */
1038 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
1039 suffix = "Pen";
1040 /* force BTN_STYLUS to allow tablet matching in udev */
1041 __set_bit(BTN_STYLUS, hi->input->keybit);
1042 } else {
1043 switch (field->application) {
1044 case HID_GD_KEYBOARD:
1045 suffix = "Keyboard";
1046 break;
1047 case HID_GD_KEYPAD:
1048 suffix = "Keypad";
1049 break;
1050 case HID_GD_MOUSE:
1051 suffix = "Mouse";
1052 break;
1053 case HID_DG_STYLUS:
1054 suffix = "Pen";
1055 /* force BTN_STYLUS to allow tablet matching in udev */
1056 __set_bit(BTN_STYLUS, hi->input->keybit);
1057 break;
1058 case HID_DG_TOUCHSCREEN:
1059 /* we do not set suffix = "Touchscreen" */
1060 break;
1061 case HID_DG_TOUCHPAD:
1062 suffix = "Touchpad";
1063 break;
1064 case HID_GD_SYSTEM_CONTROL:
1065 suffix = "System Control";
1066 break;
1067 case HID_CP_CONSUMER_CONTROL:
1068 suffix = "Consumer Control";
1069 break;
1070 default:
1071 suffix = "UNKNOWN";
1072 break;
1073 }
1074 }
1075
1076 if (suffix) {
1077 name = devm_kzalloc(&hi->input->dev,
1078 strlen(hdev->name) + strlen(suffix) + 2,
1079 GFP_KERNEL);
1080 if (name) {
1081 sprintf(name, "%s %s", hdev->name, suffix);
1082 hi->input->name = name;
1083 }
1084 }
1085
1086 return 0;
1087 }
1088
1089 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1090 {
1091 if (field->usage[0].hid != usage ||
1092 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1093 return;
1094
1095 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1096 field->flags |= HID_MAIN_ITEM_VARIABLE;
1097 }
1098
1099 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1100 {
1101 struct hid_report *report;
1102 int i;
1103
1104 list_for_each_entry(report,
1105 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1106 list) {
1107
1108 if (!report->maxfield)
1109 continue;
1110
1111 for (i = 0; i < report->maxfield; i++)
1112 if (report->field[i]->maxusage >= 1)
1113 mt_fix_const_field(report->field[i], usage);
1114 }
1115 }
1116
1117 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1118 {
1119 int ret, i;
1120 struct mt_device *td;
1121 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1122
1123 for (i = 0; mt_classes[i].name ; i++) {
1124 if (id->driver_data == mt_classes[i].name) {
1125 mtclass = &(mt_classes[i]);
1126 break;
1127 }
1128 }
1129
1130 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1131 if (!td) {
1132 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1133 return -ENOMEM;
1134 }
1135 td->mtclass = *mtclass;
1136 td->inputmode = -1;
1137 td->maxcontact_report_id = -1;
1138 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1139 td->cc_index = -1;
1140 td->mt_report_id = -1;
1141 hid_set_drvdata(hdev, td);
1142
1143 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1144 GFP_KERNEL);
1145 if (!td->fields) {
1146 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
1147 return -ENOMEM;
1148 }
1149
1150 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1151 td->serial_maybe = true;
1152
1153 /*
1154 * Store the initial quirk state
1155 */
1156 td->initial_quirks = hdev->quirks;
1157
1158 /* This allows the driver to correctly support devices
1159 * that emit events over several HID messages.
1160 */
1161 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1162
1163 /*
1164 * This allows the driver to handle different input sensors
1165 * that emits events through different reports on the same HID
1166 * device.
1167 */
1168 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1169 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1170
1171 /*
1172 * Some multitouch screens do not like to be polled for input
1173 * reports. Fortunately, the Win8 spec says that all touches
1174 * should be sent during each report, making the initialization
1175 * of input reports unnecessary. For Win7 devices, well, let's hope
1176 * they will still be happy (this is only be a problem if a touch
1177 * was already there while probing the device).
1178 *
1179 * In addition some touchpads do not behave well if we read
1180 * all feature reports from them. Instead we prevent
1181 * initial report fetching and then selectively fetch each
1182 * report we are interested in.
1183 */
1184 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1185
1186 ret = hid_parse(hdev);
1187 if (ret != 0)
1188 return ret;
1189
1190 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1191 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1192
1193 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1194 if (ret)
1195 return ret;
1196
1197 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1198 if (ret)
1199 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1200 hdev->name);
1201
1202 mt_set_maxcontacts(hdev);
1203 mt_set_input_mode(hdev);
1204
1205 /* release .fields memory as it is not used anymore */
1206 devm_kfree(&hdev->dev, td->fields);
1207 td->fields = NULL;
1208
1209 return 0;
1210 }
1211
1212 #ifdef CONFIG_PM
1213 static void mt_release_contacts(struct hid_device *hid)
1214 {
1215 struct hid_input *hidinput;
1216
1217 list_for_each_entry(hidinput, &hid->inputs, list) {
1218 struct input_dev *input_dev = hidinput->input;
1219 struct input_mt *mt = input_dev->mt;
1220 int i;
1221
1222 if (mt) {
1223 for (i = 0; i < mt->num_slots; i++) {
1224 input_mt_slot(input_dev, i);
1225 input_mt_report_slot_state(input_dev,
1226 MT_TOOL_FINGER,
1227 false);
1228 }
1229 input_mt_sync_frame(input_dev);
1230 input_sync(input_dev);
1231 }
1232 }
1233 }
1234
1235 static int mt_reset_resume(struct hid_device *hdev)
1236 {
1237 mt_release_contacts(hdev);
1238 mt_set_maxcontacts(hdev);
1239 mt_set_input_mode(hdev);
1240 return 0;
1241 }
1242
1243 static int mt_resume(struct hid_device *hdev)
1244 {
1245 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1246 * It should be safe to send it to other devices too.
1247 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1248
1249 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1250
1251 return 0;
1252 }
1253 #endif
1254
1255 static void mt_remove(struct hid_device *hdev)
1256 {
1257 struct mt_device *td = hid_get_drvdata(hdev);
1258
1259 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1260 hid_hw_stop(hdev);
1261 hdev->quirks = td->initial_quirks;
1262 }
1263
1264 /*
1265 * This list contains only:
1266 * - VID/PID of products not working with the default multitouch handling
1267 * - 2 generic rules.
1268 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1269 */
1270 static const struct hid_device_id mt_devices[] = {
1271
1272 /* 3M panels */
1273 { .driver_data = MT_CLS_3M,
1274 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1275 USB_DEVICE_ID_3M1968) },
1276 { .driver_data = MT_CLS_3M,
1277 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1278 USB_DEVICE_ID_3M2256) },
1279 { .driver_data = MT_CLS_3M,
1280 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1281 USB_DEVICE_ID_3M3266) },
1282
1283 /* Anton devices */
1284 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1285 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1286 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1287
1288 /* Atmel panels */
1289 { .driver_data = MT_CLS_SERIAL,
1290 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1291 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1292
1293 /* Baanto multitouch devices */
1294 { .driver_data = MT_CLS_NSMU,
1295 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1296 USB_DEVICE_ID_BAANTO_MT_190W2) },
1297
1298 /* Cando panels */
1299 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1300 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1301 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1302 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1303 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1304 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1305
1306 /* Chunghwa Telecom touch panels */
1307 { .driver_data = MT_CLS_NSMU,
1308 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1309 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1310
1311 /* CJTouch panels */
1312 { .driver_data = MT_CLS_NSMU,
1313 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1314 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1315 { .driver_data = MT_CLS_NSMU,
1316 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1317 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1318
1319 /* CVTouch panels */
1320 { .driver_data = MT_CLS_NSMU,
1321 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1322 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1323
1324 /* eGalax devices (resistive) */
1325 { .driver_data = MT_CLS_EGALAX,
1326 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1327 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1328 { .driver_data = MT_CLS_EGALAX,
1329 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1330 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1331
1332 /* eGalax devices (capacitive) */
1333 { .driver_data = MT_CLS_EGALAX_SERIAL,
1334 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1335 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1336 { .driver_data = MT_CLS_EGALAX,
1337 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1338 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1339 { .driver_data = MT_CLS_EGALAX_SERIAL,
1340 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1341 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1342 { .driver_data = MT_CLS_EGALAX_SERIAL,
1343 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1344 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1345 { .driver_data = MT_CLS_EGALAX_SERIAL,
1346 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1347 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1348 { .driver_data = MT_CLS_EGALAX_SERIAL,
1349 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1350 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1351 { .driver_data = MT_CLS_EGALAX,
1352 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1353 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1354 { .driver_data = MT_CLS_EGALAX,
1355 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1356 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1357 { .driver_data = MT_CLS_EGALAX_SERIAL,
1358 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1359 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1360 { .driver_data = MT_CLS_EGALAX,
1361 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1362 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1363 { .driver_data = MT_CLS_EGALAX,
1364 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1365 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1366 { .driver_data = MT_CLS_EGALAX,
1367 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1368 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1369 { .driver_data = MT_CLS_EGALAX,
1370 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1371 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1372 { .driver_data = MT_CLS_EGALAX_SERIAL,
1373 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1374 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1375 { .driver_data = MT_CLS_EGALAX_SERIAL,
1376 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1377 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1378 { .driver_data = MT_CLS_EGALAX_SERIAL,
1379 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1380 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1381
1382 /* Elitegroup panel */
1383 { .driver_data = MT_CLS_SERIAL,
1384 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1385 USB_DEVICE_ID_ELITEGROUP_05D8) },
1386
1387 /* Flatfrog Panels */
1388 { .driver_data = MT_CLS_FLATFROG,
1389 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1390 USB_DEVICE_ID_MULTITOUCH_3200) },
1391
1392 /* FocalTech Panels */
1393 { .driver_data = MT_CLS_SERIAL,
1394 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1395 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1396
1397 /* GeneralTouch panel */
1398 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1399 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1400 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1401 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1402 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1403 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1404 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1405 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1406 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1407 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1408 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1409 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1410 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1411 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1412 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1413 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1414 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1415 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1416 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1417 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1418 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1419
1420 /* Gametel game controller */
1421 { .driver_data = MT_CLS_NSMU,
1422 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1423 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1424
1425 /* GoodTouch panels */
1426 { .driver_data = MT_CLS_NSMU,
1427 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1428 USB_DEVICE_ID_GOODTOUCH_000f) },
1429
1430 /* Hanvon panels */
1431 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1432 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1433 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1434
1435 /* Ilitek dual touch panel */
1436 { .driver_data = MT_CLS_NSMU,
1437 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1438 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1439
1440 /* LG Melfas panel */
1441 { .driver_data = MT_CLS_LG,
1442 HID_USB_DEVICE(USB_VENDOR_ID_LG,
1443 USB_DEVICE_ID_LG_MELFAS_MT) },
1444
1445 /* MosArt panels */
1446 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1447 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1448 USB_DEVICE_ID_ASUS_T91MT)},
1449 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1450 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1451 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1452 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1453 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1454 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1455
1456 /* Panasonic panels */
1457 { .driver_data = MT_CLS_PANASONIC,
1458 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1459 USB_DEVICE_ID_PANABOARD_UBT780) },
1460 { .driver_data = MT_CLS_PANASONIC,
1461 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1462 USB_DEVICE_ID_PANABOARD_UBT880) },
1463
1464 /* Novatek Panel */
1465 { .driver_data = MT_CLS_NSMU,
1466 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1467 USB_DEVICE_ID_NOVATEK_PCT) },
1468
1469 /* Ntrig Panel */
1470 { .driver_data = MT_CLS_NSMU,
1471 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1472 USB_VENDOR_ID_NTRIG, 0x1b05) },
1473
1474 /* PixArt optical touch screen */
1475 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1476 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1477 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1478 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1479 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1480 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1481 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1482 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1483 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1484
1485 /* PixCir-based panels */
1486 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1487 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1488 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1489
1490 /* Quanta-based panels */
1491 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1492 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1493 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1494
1495 /* Stantum panels */
1496 { .driver_data = MT_CLS_CONFIDENCE,
1497 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1498 USB_DEVICE_ID_MTP_STM)},
1499
1500 /* TopSeed panels */
1501 { .driver_data = MT_CLS_TOPSEED,
1502 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1503 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1504
1505 /* Touch International panels */
1506 { .driver_data = MT_CLS_NSMU,
1507 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1508 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1509
1510 /* Unitec panels */
1511 { .driver_data = MT_CLS_NSMU,
1512 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1513 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1514 { .driver_data = MT_CLS_NSMU,
1515 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1516 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1517
1518 /* VTL panels */
1519 { .driver_data = MT_CLS_VTL,
1520 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1521 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1522
1523 /* Wistron panels */
1524 { .driver_data = MT_CLS_NSMU,
1525 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1526 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1527
1528 /* XAT */
1529 { .driver_data = MT_CLS_NSMU,
1530 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1531 USB_DEVICE_ID_XAT_CSR) },
1532
1533 /* Xiroku */
1534 { .driver_data = MT_CLS_NSMU,
1535 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1536 USB_DEVICE_ID_XIROKU_SPX) },
1537 { .driver_data = MT_CLS_NSMU,
1538 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1539 USB_DEVICE_ID_XIROKU_MPX) },
1540 { .driver_data = MT_CLS_NSMU,
1541 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1542 USB_DEVICE_ID_XIROKU_CSR) },
1543 { .driver_data = MT_CLS_NSMU,
1544 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1545 USB_DEVICE_ID_XIROKU_SPX1) },
1546 { .driver_data = MT_CLS_NSMU,
1547 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1548 USB_DEVICE_ID_XIROKU_MPX1) },
1549 { .driver_data = MT_CLS_NSMU,
1550 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1551 USB_DEVICE_ID_XIROKU_CSR1) },
1552 { .driver_data = MT_CLS_NSMU,
1553 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1554 USB_DEVICE_ID_XIROKU_SPX2) },
1555 { .driver_data = MT_CLS_NSMU,
1556 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1557 USB_DEVICE_ID_XIROKU_MPX2) },
1558 { .driver_data = MT_CLS_NSMU,
1559 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1560 USB_DEVICE_ID_XIROKU_CSR2) },
1561
1562 /* Generic MT device */
1563 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1564
1565 /* Generic Win 8 certified MT device */
1566 { .driver_data = MT_CLS_WIN_8,
1567 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1568 HID_ANY_ID, HID_ANY_ID) },
1569 { }
1570 };
1571 MODULE_DEVICE_TABLE(hid, mt_devices);
1572
1573 static const struct hid_usage_id mt_grabbed_usages[] = {
1574 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1575 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1576 };
1577
1578 static struct hid_driver mt_driver = {
1579 .name = "hid-multitouch",
1580 .id_table = mt_devices,
1581 .probe = mt_probe,
1582 .remove = mt_remove,
1583 .input_mapping = mt_input_mapping,
1584 .input_mapped = mt_input_mapped,
1585 .input_configured = mt_input_configured,
1586 .feature_mapping = mt_feature_mapping,
1587 .usage_table = mt_grabbed_usages,
1588 .event = mt_event,
1589 .report = mt_report,
1590 #ifdef CONFIG_PM
1591 .reset_resume = mt_reset_resume,
1592 .resume = mt_resume,
1593 #endif
1594 };
1595 module_hid_driver(mt_driver);
Linux with added FPC-III support