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