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HID: logitech-hidpp: limit visibility of init/deinit functions
[mirror_ubuntu-artful-kernel.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 }
400 }
401
402 static void set_abs(struct input_dev *input, unsigned int code,
403 struct hid_field *field, int snratio)
404 {
405 int fmin = field->logical_minimum;
406 int fmax = field->logical_maximum;
407 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
408 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
409 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
410 }
411
412 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
413 struct hid_input *hi)
414 {
415 struct mt_fields *f = td->fields;
416
417 if (f->length >= HID_MAX_FIELDS)
418 return;
419
420 f->usages[f->length++] = usage->hid;
421 }
422
423 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
424 struct hid_field *field, struct hid_usage *usage,
425 unsigned long **bit, int *max)
426 {
427 struct mt_device *td = hid_get_drvdata(hdev);
428 struct mt_class *cls = &td->mtclass;
429 int code;
430 struct hid_usage *prev_usage = NULL;
431
432 if (field->application == HID_DG_TOUCHSCREEN)
433 td->mt_flags |= INPUT_MT_DIRECT;
434
435 /*
436 * Model touchscreens providing buttons as touchpads.
437 */
438 if (field->application == HID_DG_TOUCHPAD ||
439 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
440 td->mt_flags |= INPUT_MT_POINTER;
441 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
442 }
443
444 /* count the buttons on touchpads */
445 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
446 td->buttons_count++;
447
448 if (usage->usage_index)
449 prev_usage = &field->usage[usage->usage_index - 1];
450
451 switch (usage->hid & HID_USAGE_PAGE) {
452
453 case HID_UP_GENDESK:
454 switch (usage->hid) {
455 case HID_GD_X:
456 if (prev_usage && (prev_usage->hid == usage->hid)) {
457 hid_map_usage(hi, usage, bit, max,
458 EV_ABS, ABS_MT_TOOL_X);
459 set_abs(hi->input, ABS_MT_TOOL_X, field,
460 cls->sn_move);
461 } else {
462 hid_map_usage(hi, usage, bit, max,
463 EV_ABS, ABS_MT_POSITION_X);
464 set_abs(hi->input, ABS_MT_POSITION_X, field,
465 cls->sn_move);
466 }
467
468 mt_store_field(usage, td, hi);
469 return 1;
470 case HID_GD_Y:
471 if (prev_usage && (prev_usage->hid == usage->hid)) {
472 hid_map_usage(hi, usage, bit, max,
473 EV_ABS, ABS_MT_TOOL_Y);
474 set_abs(hi->input, ABS_MT_TOOL_Y, field,
475 cls->sn_move);
476 } else {
477 hid_map_usage(hi, usage, bit, max,
478 EV_ABS, ABS_MT_POSITION_Y);
479 set_abs(hi->input, ABS_MT_POSITION_Y, field,
480 cls->sn_move);
481 }
482
483 mt_store_field(usage, td, hi);
484 return 1;
485 }
486 return 0;
487
488 case HID_UP_DIGITIZER:
489 switch (usage->hid) {
490 case HID_DG_INRANGE:
491 if (cls->quirks & MT_QUIRK_HOVERING) {
492 hid_map_usage(hi, usage, bit, max,
493 EV_ABS, ABS_MT_DISTANCE);
494 input_set_abs_params(hi->input,
495 ABS_MT_DISTANCE, 0, 1, 0, 0);
496 }
497 mt_store_field(usage, td, hi);
498 return 1;
499 case HID_DG_CONFIDENCE:
500 if (cls->name == MT_CLS_WIN_8 &&
501 field->application == HID_DG_TOUCHPAD) {
502 cls->quirks &= ~MT_QUIRK_ALWAYS_VALID;
503 cls->quirks |= MT_QUIRK_VALID_IS_CONFIDENCE;
504 }
505 mt_store_field(usage, td, hi);
506 return 1;
507 case HID_DG_TIPSWITCH:
508 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
509 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
510 mt_store_field(usage, td, hi);
511 return 1;
512 case HID_DG_CONTACTID:
513 mt_store_field(usage, td, hi);
514 td->touches_by_report++;
515 td->mt_report_id = field->report->id;
516 return 1;
517 case HID_DG_WIDTH:
518 hid_map_usage(hi, usage, bit, max,
519 EV_ABS, ABS_MT_TOUCH_MAJOR);
520 if (!(cls->quirks & MT_QUIRK_NO_AREA))
521 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
522 cls->sn_width);
523 mt_store_field(usage, td, hi);
524 return 1;
525 case HID_DG_HEIGHT:
526 hid_map_usage(hi, usage, bit, max,
527 EV_ABS, ABS_MT_TOUCH_MINOR);
528 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
529 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
530 cls->sn_height);
531 input_set_abs_params(hi->input,
532 ABS_MT_ORIENTATION, 0, 1, 0, 0);
533 }
534 mt_store_field(usage, td, hi);
535 return 1;
536 case HID_DG_TIPPRESSURE:
537 hid_map_usage(hi, usage, bit, max,
538 EV_ABS, ABS_MT_PRESSURE);
539 set_abs(hi->input, ABS_MT_PRESSURE, field,
540 cls->sn_pressure);
541 mt_store_field(usage, td, hi);
542 return 1;
543 case HID_DG_CONTACTCOUNT:
544 /* Ignore if indexes are out of bounds. */
545 if (field->index >= field->report->maxfield ||
546 usage->usage_index >= field->report_count)
547 return 1;
548 td->cc_index = field->index;
549 td->cc_value_index = usage->usage_index;
550 return 1;
551 case HID_DG_CONTACTMAX:
552 /* we don't set td->last_slot_field as contactcount and
553 * contact max are global to the report */
554 return -1;
555 case HID_DG_TOUCH:
556 /* Legacy devices use TIPSWITCH and not TOUCH.
557 * Let's just ignore this field. */
558 return -1;
559 }
560 /* let hid-input decide for the others */
561 return 0;
562
563 case HID_UP_BUTTON:
564 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
565 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
566 input_set_capability(hi->input, EV_KEY, code);
567 return 1;
568
569 case 0xff000000:
570 /* we do not want to map these: no input-oriented meaning */
571 return -1;
572 }
573
574 return 0;
575 }
576
577 static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi,
578 struct hid_field *field, struct hid_usage *usage,
579 unsigned long **bit, int *max)
580 {
581 if (usage->type == EV_KEY || usage->type == EV_ABS)
582 set_bit(usage->type, hi->input->evbit);
583
584 return -1;
585 }
586
587 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
588 {
589 __s32 quirks = td->mtclass.quirks;
590
591 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
592 return td->curdata.contactid;
593
594 if (quirks & MT_QUIRK_CYPRESS)
595 return cypress_compute_slot(td);
596
597 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
598 return td->num_received;
599
600 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
601 return td->curdata.contactid - 1;
602
603 return input_mt_get_slot_by_key(input, td->curdata.contactid);
604 }
605
606 /*
607 * this function is called when a whole contact has been processed,
608 * so that it can assign it to a slot and store the data there
609 */
610 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
611 {
612 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
613 td->num_received >= td->num_expected)
614 return;
615
616 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
617 int slotnum = mt_compute_slot(td, input);
618 struct mt_slot *s = &td->curdata;
619 struct input_mt *mt = input->mt;
620
621 if (slotnum < 0 || slotnum >= td->maxcontacts)
622 return;
623
624 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
625 struct input_mt_slot *slot = &mt->slots[slotnum];
626 if (input_mt_is_active(slot) &&
627 input_mt_is_used(mt, slot))
628 return;
629 }
630
631 input_mt_slot(input, slotnum);
632 input_mt_report_slot_state(input, MT_TOOL_FINGER,
633 s->touch_state || s->inrange_state);
634 if (s->touch_state || s->inrange_state) {
635 /* this finger is in proximity of the sensor */
636 int wide = (s->w > s->h);
637 /* divided by two to match visual scale of touch */
638 int major = max(s->w, s->h) >> 1;
639 int minor = min(s->w, s->h) >> 1;
640
641 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
642 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
643 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
644 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
645 input_event(input, EV_ABS, ABS_MT_DISTANCE,
646 !s->touch_state);
647 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
648 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
649 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
650 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
651 }
652 }
653
654 td->num_received++;
655 }
656
657 /*
658 * this function is called when a whole packet has been received and processed,
659 * so that it can decide what to send to the input layer.
660 */
661 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
662 {
663 input_mt_sync_frame(input);
664 input_sync(input);
665 td->num_received = 0;
666 }
667
668 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
669 struct hid_usage *usage, __s32 value)
670 {
671 /* we will handle the hidinput part later, now remains hiddev */
672 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
673 hid->hiddev_hid_event(hid, field, usage, value);
674
675 return 1;
676 }
677
678 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
679 struct hid_usage *usage, __s32 value)
680 {
681 struct mt_device *td = hid_get_drvdata(hid);
682 __s32 quirks = td->mtclass.quirks;
683 struct input_dev *input = field->hidinput->input;
684
685 if (hid->claimed & HID_CLAIMED_INPUT) {
686 switch (usage->hid) {
687 case HID_DG_INRANGE:
688 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
689 td->curvalid = value;
690 if (quirks & MT_QUIRK_HOVERING)
691 td->curdata.inrange_state = value;
692 break;
693 case HID_DG_TIPSWITCH:
694 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
695 td->curvalid = value;
696 td->curdata.touch_state = value;
697 break;
698 case HID_DG_CONFIDENCE:
699 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
700 td->curvalid = value;
701 break;
702 case HID_DG_CONTACTID:
703 td->curdata.contactid = value;
704 break;
705 case HID_DG_TIPPRESSURE:
706 td->curdata.p = value;
707 break;
708 case HID_GD_X:
709 if (usage->code == ABS_MT_TOOL_X)
710 td->curdata.cx = value;
711 else
712 td->curdata.x = value;
713 break;
714 case HID_GD_Y:
715 if (usage->code == ABS_MT_TOOL_Y)
716 td->curdata.cy = value;
717 else
718 td->curdata.y = value;
719 break;
720 case HID_DG_WIDTH:
721 td->curdata.w = value;
722 break;
723 case HID_DG_HEIGHT:
724 td->curdata.h = value;
725 break;
726 case HID_DG_CONTACTCOUNT:
727 break;
728 case HID_DG_TOUCH:
729 /* do nothing */
730 break;
731
732 default:
733 if (usage->type)
734 input_event(input, usage->type, usage->code,
735 value);
736 return;
737 }
738
739 if (usage->usage_index + 1 == field->report_count) {
740 /* we only take into account the last report. */
741 if (usage->hid == td->last_slot_field)
742 mt_complete_slot(td, field->hidinput->input);
743 }
744
745 }
746 }
747
748 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
749 {
750 struct mt_device *td = hid_get_drvdata(hid);
751 struct hid_field *field;
752 unsigned count;
753 int r, n;
754
755 /*
756 * Includes multi-packet support where subsequent
757 * packets are sent with zero contactcount.
758 */
759 if (td->cc_index >= 0) {
760 struct hid_field *field = report->field[td->cc_index];
761 int value = field->value[td->cc_value_index];
762 if (value)
763 td->num_expected = value;
764 }
765
766 for (r = 0; r < report->maxfield; r++) {
767 field = report->field[r];
768 count = field->report_count;
769
770 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
771 continue;
772
773 for (n = 0; n < count; n++)
774 mt_process_mt_event(hid, field, &field->usage[n],
775 field->value[n]);
776 }
777
778 if (td->num_received >= td->num_expected)
779 mt_sync_frame(td, report->field[0]->hidinput->input);
780 }
781
782 static int mt_touch_input_configured(struct hid_device *hdev,
783 struct hid_input *hi)
784 {
785 struct mt_device *td = hid_get_drvdata(hdev);
786 struct mt_class *cls = &td->mtclass;
787 struct input_dev *input = hi->input;
788 int ret;
789
790 if (!td->maxcontacts)
791 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
792
793 mt_post_parse(td);
794 if (td->serial_maybe)
795 mt_post_parse_default_settings(td);
796
797 if (cls->is_indirect)
798 td->mt_flags |= INPUT_MT_POINTER;
799
800 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
801 td->mt_flags |= INPUT_MT_DROP_UNUSED;
802
803 /* check for clickpads */
804 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
805 td->is_buttonpad = true;
806
807 if (td->is_buttonpad)
808 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
809
810 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
811 if (ret)
812 return ret;
813
814 td->mt_flags = 0;
815 return 0;
816 }
817
818 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
819 struct hid_field *field, struct hid_usage *usage,
820 unsigned long **bit, int *max)
821 {
822 struct mt_device *td = hid_get_drvdata(hdev);
823
824 /*
825 * If mtclass.export_all_inputs is not set, only map fields from
826 * TouchScreen or TouchPad collections. We need to ignore fields
827 * that belong to other collections such as Mouse that might have
828 * the same GenericDesktop usages.
829 */
830 if (!td->mtclass.export_all_inputs &&
831 field->application != HID_DG_TOUCHSCREEN &&
832 field->application != HID_DG_PEN &&
833 field->application != HID_DG_TOUCHPAD)
834 return -1;
835
836 /*
837 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
838 * for the stylus.
839 * The check for mt_report_id ensures we don't process
840 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
841 * collection, but within the report ID.
842 */
843 if (field->physical == HID_DG_STYLUS)
844 return 0;
845 else if ((field->physical == 0) &&
846 (field->report->id != td->mt_report_id) &&
847 (td->mt_report_id != -1))
848 return 0;
849
850 if (field->application == HID_DG_TOUCHSCREEN ||
851 field->application == HID_DG_TOUCHPAD)
852 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
853
854 /* let hid-core decide for the others */
855 return 0;
856 }
857
858 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
859 struct hid_field *field, struct hid_usage *usage,
860 unsigned long **bit, int *max)
861 {
862 /*
863 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
864 * for the stylus.
865 */
866 if (field->physical == HID_DG_STYLUS)
867 return 0;
868
869 if (field->application == HID_DG_TOUCHSCREEN ||
870 field->application == HID_DG_TOUCHPAD)
871 return mt_touch_input_mapped(hdev, hi, field, usage, bit, max);
872
873 /* let hid-core decide for the others */
874 return 0;
875 }
876
877 static int mt_event(struct hid_device *hid, struct hid_field *field,
878 struct hid_usage *usage, __s32 value)
879 {
880 struct mt_device *td = hid_get_drvdata(hid);
881
882 if (field->report->id == td->mt_report_id)
883 return mt_touch_event(hid, field, usage, value);
884
885 return 0;
886 }
887
888 static void mt_report(struct hid_device *hid, struct hid_report *report)
889 {
890 struct mt_device *td = hid_get_drvdata(hid);
891 struct hid_field *field = report->field[0];
892
893 if (!(hid->claimed & HID_CLAIMED_INPUT))
894 return;
895
896 if (report->id == td->mt_report_id)
897 return mt_touch_report(hid, report);
898
899 if (field && field->hidinput && field->hidinput->input)
900 input_sync(field->hidinput->input);
901 }
902
903 static void mt_set_input_mode(struct hid_device *hdev)
904 {
905 struct mt_device *td = hid_get_drvdata(hdev);
906 struct hid_report *r;
907 struct hid_report_enum *re;
908 struct mt_class *cls = &td->mtclass;
909 char *buf;
910 int report_len;
911
912 if (td->inputmode < 0)
913 return;
914
915 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
916 r = re->report_id_hash[td->inputmode];
917 if (r) {
918 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
919 report_len = hid_report_len(r);
920 buf = hid_alloc_report_buf(r, GFP_KERNEL);
921 if (!buf) {
922 hid_err(hdev, "failed to allocate buffer for report\n");
923 return;
924 }
925 hid_hw_raw_request(hdev, r->id, buf, report_len,
926 HID_FEATURE_REPORT,
927 HID_REQ_GET_REPORT);
928 kfree(buf);
929 }
930 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
931 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
932 }
933 }
934
935 static void mt_set_maxcontacts(struct hid_device *hdev)
936 {
937 struct mt_device *td = hid_get_drvdata(hdev);
938 struct hid_report *r;
939 struct hid_report_enum *re;
940 int fieldmax, max;
941
942 if (td->maxcontact_report_id < 0)
943 return;
944
945 if (!td->mtclass.maxcontacts)
946 return;
947
948 re = &hdev->report_enum[HID_FEATURE_REPORT];
949 r = re->report_id_hash[td->maxcontact_report_id];
950 if (r) {
951 max = td->mtclass.maxcontacts;
952 fieldmax = r->field[0]->logical_maximum;
953 max = min(fieldmax, max);
954 if (r->field[0]->value[0] != max) {
955 r->field[0]->value[0] = max;
956 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
957 }
958 }
959 }
960
961 static void mt_post_parse_default_settings(struct mt_device *td)
962 {
963 __s32 quirks = td->mtclass.quirks;
964
965 /* unknown serial device needs special quirks */
966 if (td->touches_by_report == 1) {
967 quirks |= MT_QUIRK_ALWAYS_VALID;
968 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
969 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
970 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
971 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
972 }
973
974 td->mtclass.quirks = quirks;
975 }
976
977 static void mt_post_parse(struct mt_device *td)
978 {
979 struct mt_fields *f = td->fields;
980 struct mt_class *cls = &td->mtclass;
981
982 if (td->touches_by_report > 0) {
983 int field_count_per_touch = f->length / td->touches_by_report;
984 td->last_slot_field = f->usages[field_count_per_touch - 1];
985 }
986
987 if (td->cc_index < 0)
988 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
989 }
990
991 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
992 {
993 struct mt_device *td = hid_get_drvdata(hdev);
994 char *name;
995 const char *suffix = NULL;
996 struct hid_field *field = hi->report->field[0];
997 int ret;
998
999 if (hi->report->id == td->mt_report_id) {
1000 ret = mt_touch_input_configured(hdev, hi);
1001 if (ret)
1002 return ret;
1003 }
1004
1005 /*
1006 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1007 * for the stylus. Check this first, and then rely on the application
1008 * field.
1009 */
1010 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
1011 suffix = "Pen";
1012 /* force BTN_STYLUS to allow tablet matching in udev */
1013 __set_bit(BTN_STYLUS, hi->input->keybit);
1014 } else {
1015 switch (field->application) {
1016 case HID_GD_KEYBOARD:
1017 suffix = "Keyboard";
1018 break;
1019 case HID_GD_KEYPAD:
1020 suffix = "Keypad";
1021 break;
1022 case HID_GD_MOUSE:
1023 suffix = "Mouse";
1024 break;
1025 case HID_DG_STYLUS:
1026 suffix = "Pen";
1027 /* force BTN_STYLUS to allow tablet matching in udev */
1028 __set_bit(BTN_STYLUS, hi->input->keybit);
1029 break;
1030 case HID_DG_TOUCHSCREEN:
1031 /* we do not set suffix = "Touchscreen" */
1032 break;
1033 case HID_DG_TOUCHPAD:
1034 suffix = "Touchpad";
1035 break;
1036 case HID_GD_SYSTEM_CONTROL:
1037 suffix = "System Control";
1038 break;
1039 case HID_CP_CONSUMER_CONTROL:
1040 suffix = "Consumer Control";
1041 break;
1042 default:
1043 suffix = "UNKNOWN";
1044 break;
1045 }
1046 }
1047
1048 if (suffix) {
1049 name = devm_kzalloc(&hi->input->dev,
1050 strlen(hdev->name) + strlen(suffix) + 2,
1051 GFP_KERNEL);
1052 if (name) {
1053 sprintf(name, "%s %s", hdev->name, suffix);
1054 hi->input->name = name;
1055 }
1056 }
1057
1058 return 0;
1059 }
1060
1061 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1062 {
1063 int ret, i;
1064 struct mt_device *td;
1065 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1066
1067 for (i = 0; mt_classes[i].name ; i++) {
1068 if (id->driver_data == mt_classes[i].name) {
1069 mtclass = &(mt_classes[i]);
1070 break;
1071 }
1072 }
1073
1074 /* This allows the driver to correctly support devices
1075 * that emit events over several HID messages.
1076 */
1077 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1078
1079 /*
1080 * This allows the driver to handle different input sensors
1081 * that emits events through different reports on the same HID
1082 * device.
1083 */
1084 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1085 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1086
1087 /*
1088 * Handle special quirks for Windows 8 certified devices.
1089 */
1090 if (id->group == HID_GROUP_MULTITOUCH_WIN_8)
1091 /*
1092 * Some multitouch screens do not like to be polled for input
1093 * reports. Fortunately, the Win8 spec says that all touches
1094 * should be sent during each report, making the initialization
1095 * of input reports unnecessary.
1096 *
1097 * In addition some touchpads do not behave well if we read
1098 * all feature reports from them. Instead we prevent
1099 * initial report fetching and then selectively fetch each
1100 * report we are interested in.
1101 */
1102 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1103
1104 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1105 if (!td) {
1106 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1107 return -ENOMEM;
1108 }
1109 td->mtclass = *mtclass;
1110 td->inputmode = -1;
1111 td->maxcontact_report_id = -1;
1112 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1113 td->cc_index = -1;
1114 td->mt_report_id = -1;
1115 hid_set_drvdata(hdev, td);
1116
1117 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1118 GFP_KERNEL);
1119 if (!td->fields) {
1120 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
1121 return -ENOMEM;
1122 }
1123
1124 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1125 td->serial_maybe = true;
1126
1127 ret = hid_parse(hdev);
1128 if (ret != 0)
1129 return ret;
1130
1131 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1132 if (ret)
1133 return ret;
1134
1135 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1136
1137 mt_set_maxcontacts(hdev);
1138 mt_set_input_mode(hdev);
1139
1140 /* release .fields memory as it is not used anymore */
1141 devm_kfree(&hdev->dev, td->fields);
1142 td->fields = NULL;
1143
1144 return 0;
1145 }
1146
1147 #ifdef CONFIG_PM
1148 static int mt_reset_resume(struct hid_device *hdev)
1149 {
1150 mt_set_maxcontacts(hdev);
1151 mt_set_input_mode(hdev);
1152 return 0;
1153 }
1154
1155 static int mt_resume(struct hid_device *hdev)
1156 {
1157 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1158 * It should be safe to send it to other devices too.
1159 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1160
1161 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1162
1163 return 0;
1164 }
1165 #endif
1166
1167 static void mt_remove(struct hid_device *hdev)
1168 {
1169 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1170 hid_hw_stop(hdev);
1171 }
1172
1173 /*
1174 * This list contains only:
1175 * - VID/PID of products not working with the default multitouch handling
1176 * - 2 generic rules.
1177 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1178 */
1179 static const struct hid_device_id mt_devices[] = {
1180
1181 /* 3M panels */
1182 { .driver_data = MT_CLS_3M,
1183 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1184 USB_DEVICE_ID_3M1968) },
1185 { .driver_data = MT_CLS_3M,
1186 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1187 USB_DEVICE_ID_3M2256) },
1188 { .driver_data = MT_CLS_3M,
1189 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1190 USB_DEVICE_ID_3M3266) },
1191
1192 /* Anton devices */
1193 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1194 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1195 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1196
1197 /* Atmel panels */
1198 { .driver_data = MT_CLS_SERIAL,
1199 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1200 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1201
1202 /* Baanto multitouch devices */
1203 { .driver_data = MT_CLS_NSMU,
1204 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1205 USB_DEVICE_ID_BAANTO_MT_190W2) },
1206
1207 /* Cando panels */
1208 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1209 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1210 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1211 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1212 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1213 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1214
1215 /* Chunghwa Telecom touch panels */
1216 { .driver_data = MT_CLS_NSMU,
1217 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1218 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1219
1220 /* CJTouch panels */
1221 { .driver_data = MT_CLS_NSMU,
1222 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1223 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1224 { .driver_data = MT_CLS_NSMU,
1225 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1226 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1227
1228 /* CVTouch panels */
1229 { .driver_data = MT_CLS_NSMU,
1230 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1231 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1232
1233 /* eGalax devices (resistive) */
1234 { .driver_data = MT_CLS_EGALAX,
1235 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1236 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1237 { .driver_data = MT_CLS_EGALAX,
1238 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1239 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1240
1241 /* eGalax devices (capacitive) */
1242 { .driver_data = MT_CLS_EGALAX_SERIAL,
1243 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1244 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1245 { .driver_data = MT_CLS_EGALAX,
1246 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1247 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1248 { .driver_data = MT_CLS_EGALAX_SERIAL,
1249 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1250 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1251 { .driver_data = MT_CLS_EGALAX_SERIAL,
1252 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1253 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1254 { .driver_data = MT_CLS_EGALAX_SERIAL,
1255 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1256 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1257 { .driver_data = MT_CLS_EGALAX_SERIAL,
1258 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1259 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1260 { .driver_data = MT_CLS_EGALAX,
1261 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1262 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1263 { .driver_data = MT_CLS_EGALAX,
1264 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1265 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1266 { .driver_data = MT_CLS_EGALAX_SERIAL,
1267 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1268 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1269 { .driver_data = MT_CLS_EGALAX,
1270 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1271 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1272 { .driver_data = MT_CLS_EGALAX,
1273 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1274 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1275 { .driver_data = MT_CLS_EGALAX,
1276 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1277 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1278 { .driver_data = MT_CLS_EGALAX,
1279 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1280 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1281 { .driver_data = MT_CLS_EGALAX_SERIAL,
1282 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1283 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1284 { .driver_data = MT_CLS_EGALAX_SERIAL,
1285 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1286 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1287 { .driver_data = MT_CLS_EGALAX_SERIAL,
1288 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1289 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1290
1291 /* Elitegroup panel */
1292 { .driver_data = MT_CLS_SERIAL,
1293 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1294 USB_DEVICE_ID_ELITEGROUP_05D8) },
1295
1296 /* Flatfrog Panels */
1297 { .driver_data = MT_CLS_FLATFROG,
1298 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1299 USB_DEVICE_ID_MULTITOUCH_3200) },
1300
1301 /* FocalTech Panels */
1302 { .driver_data = MT_CLS_SERIAL,
1303 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1304 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1305
1306 /* GeneralTouch panel */
1307 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1308 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1309 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1310 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1311 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1312 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1313 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1314 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1315 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1316 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1317 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1318 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1319 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1320 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1321 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1322 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1323 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1324 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1325 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1326 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1327 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1328
1329 /* Gametel game controller */
1330 { .driver_data = MT_CLS_NSMU,
1331 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1332 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1333
1334 /* GoodTouch panels */
1335 { .driver_data = MT_CLS_NSMU,
1336 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1337 USB_DEVICE_ID_GOODTOUCH_000f) },
1338
1339 /* Hanvon panels */
1340 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1341 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1342 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1343
1344 /* Ilitek dual touch panel */
1345 { .driver_data = MT_CLS_NSMU,
1346 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1347 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1348
1349 /* MosArt panels */
1350 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1351 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1352 USB_DEVICE_ID_ASUS_T91MT)},
1353 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1354 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1355 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1356 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1357 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1358 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1359
1360 /* Panasonic panels */
1361 { .driver_data = MT_CLS_PANASONIC,
1362 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1363 USB_DEVICE_ID_PANABOARD_UBT780) },
1364 { .driver_data = MT_CLS_PANASONIC,
1365 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1366 USB_DEVICE_ID_PANABOARD_UBT880) },
1367
1368 /* Novatek Panel */
1369 { .driver_data = MT_CLS_NSMU,
1370 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1371 USB_DEVICE_ID_NOVATEK_PCT) },
1372
1373 /* PixArt optical touch screen */
1374 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1375 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1376 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1377 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1378 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1379 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1380 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1381 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1382 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1383
1384 /* PixCir-based panels */
1385 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1386 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1387 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1388
1389 /* Quanta-based panels */
1390 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1391 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1392 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1393
1394 /* Stantum panels */
1395 { .driver_data = MT_CLS_CONFIDENCE,
1396 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1397 USB_DEVICE_ID_MTP_STM)},
1398
1399 /* TopSeed panels */
1400 { .driver_data = MT_CLS_TOPSEED,
1401 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1402 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1403
1404 /* Touch International panels */
1405 { .driver_data = MT_CLS_NSMU,
1406 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1407 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1408
1409 /* Unitec panels */
1410 { .driver_data = MT_CLS_NSMU,
1411 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1412 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1413 { .driver_data = MT_CLS_NSMU,
1414 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1415 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1416
1417 /* VTL panels */
1418 { .driver_data = MT_CLS_VTL,
1419 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1420 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1421
1422 /* Wistron panels */
1423 { .driver_data = MT_CLS_NSMU,
1424 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1425 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1426
1427 /* XAT */
1428 { .driver_data = MT_CLS_NSMU,
1429 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1430 USB_DEVICE_ID_XAT_CSR) },
1431
1432 /* Xiroku */
1433 { .driver_data = MT_CLS_NSMU,
1434 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1435 USB_DEVICE_ID_XIROKU_SPX) },
1436 { .driver_data = MT_CLS_NSMU,
1437 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1438 USB_DEVICE_ID_XIROKU_MPX) },
1439 { .driver_data = MT_CLS_NSMU,
1440 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1441 USB_DEVICE_ID_XIROKU_CSR) },
1442 { .driver_data = MT_CLS_NSMU,
1443 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1444 USB_DEVICE_ID_XIROKU_SPX1) },
1445 { .driver_data = MT_CLS_NSMU,
1446 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1447 USB_DEVICE_ID_XIROKU_MPX1) },
1448 { .driver_data = MT_CLS_NSMU,
1449 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1450 USB_DEVICE_ID_XIROKU_CSR1) },
1451 { .driver_data = MT_CLS_NSMU,
1452 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1453 USB_DEVICE_ID_XIROKU_SPX2) },
1454 { .driver_data = MT_CLS_NSMU,
1455 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1456 USB_DEVICE_ID_XIROKU_MPX2) },
1457 { .driver_data = MT_CLS_NSMU,
1458 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1459 USB_DEVICE_ID_XIROKU_CSR2) },
1460
1461 /* Generic MT device */
1462 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1463
1464 /* Generic Win 8 certified MT device */
1465 { .driver_data = MT_CLS_WIN_8,
1466 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1467 HID_ANY_ID, HID_ANY_ID) },
1468 { }
1469 };
1470 MODULE_DEVICE_TABLE(hid, mt_devices);
1471
1472 static const struct hid_usage_id mt_grabbed_usages[] = {
1473 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1474 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1475 };
1476
1477 static struct hid_driver mt_driver = {
1478 .name = "hid-multitouch",
1479 .id_table = mt_devices,
1480 .probe = mt_probe,
1481 .remove = mt_remove,
1482 .input_mapping = mt_input_mapping,
1483 .input_mapped = mt_input_mapped,
1484 .input_configured = mt_input_configured,
1485 .feature_mapping = mt_feature_mapping,
1486 .usage_table = mt_grabbed_usages,
1487 .event = mt_event,
1488 .report = mt_report,
1489 #ifdef CONFIG_PM
1490 .reset_resume = mt_reset_resume,
1491 .resume = mt_resume,
1492 #endif
1493 };
1494 module_hid_driver(mt_driver);
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