]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blame - drivers/hid/hid-multitouch.c
projects / mirror_ubuntu-eoan-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
HID: multitouch: correct eGalax a001 protocol
[mirror_ubuntu-eoan-kernel.git] / drivers / hid / hid-multitouch.c
CommitLineData
5519cab4
BT		 1/*
2 * HID driver for multitouch panels
3 *
4 * Copyright (c) 2010-2011 Stephane Chatty <chatty@enac.fr>
5 * Copyright (c) 2010-2011 Benjamin Tissoires <benjamin.tissoires@gmail.com>
6 * Copyright (c) 2010-2011 Ecole Nationale de l'Aviation Civile, France
7 *
4875ac11
RN		 8 * This code is partly based on hid-egalax.c:
9 *
10 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
11 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
12 * Copyright (c) 2010 Canonical, Ltd.
13 *
f786bba4
BT		 14 * This code is partly based on hid-3m-pct.c:
15 *
16 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
17 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
18 * Copyright (c) 2010 Canonical, Ltd.
19 *
5519cab4
BT		 20 */
21
22/*
23 * This program is free software; you can redistribute it and/or modify it
24 * under the terms of the GNU General Public License as published by the Free
25 * Software Foundation; either version 2 of the License, or (at your option)
26 * any later version.
27 */
28
29#include <linux/device.h>
30#include <linux/hid.h>
31#include <linux/module.h>
32#include <linux/slab.h>
33#include <linux/usb.h>
34#include <linux/input/mt.h>
35#include "usbhid/usbhid.h"
36
37
38MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
ef2fafb3 39MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
5519cab4
BT		 40MODULE_DESCRIPTION("HID multitouch panels");
41MODULE_LICENSE("GPL");
42
43#include "hid-ids.h"
44
45/* quirks to control the device */
46#define MT_QUIRK_NOT_SEEN_MEANS_UP (1 << 0)
47#define MT_QUIRK_SLOT_IS_CONTACTID (1 << 1)
2d93666e 48#define MT_QUIRK_CYPRESS (1 << 2)
5572da08 49#define MT_QUIRK_SLOT_IS_CONTACTNUMBER (1 << 3)
a062cc5a
SC		 50#define MT_QUIRK_ALWAYS_VALID (1 << 4)
51#define MT_QUIRK_VALID_IS_INRANGE (1 << 5)
52#define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 6)
a062cc5a 53#define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 8)
5519cab4
BT		 54
55struct mt_slot {
56 __s32 x, y, p, w, h;
57 __s32 contactid; /* the device ContactID assigned to this slot */
58 bool touch_state; /* is the touch valid? */
59 bool seen_in_this_frame;/* has this slot been updated */
60};
61
eec29e3d
BT		 62struct mt_class {
63 __s32 name; /* MT_CLS */
64 __s32 quirks;
65 __s32 sn_move; /* Signal/noise ratio for move events */
66 __s32 sn_width; /* Signal/noise ratio for width events */
67 __s32 sn_height; /* Signal/noise ratio for height events */
68 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
69 __u8 maxcontacts;
70};
71
5519cab4
BT		 72struct mt_device {
73 struct mt_slot curdata; /* placeholder of incoming data */
eec29e3d 74 struct mt_class mtclass; /* our mt device class */
5519cab4
BT		 75 unsigned last_field_index; /* last field index of the report */
76 unsigned last_slot_field; /* the last field of a slot */
b84bd27f 77 int last_mt_collection; /* last known mt-related collection */
5519cab4
BT		 78 __s8 inputmode; /* InputMode HID feature, -1 if non-existent */
79 __u8 num_received; /* how many contacts we received */
80 __u8 num_expected; /* expected last contact index */
9498f954 81 __u8 maxcontacts;
5519cab4 82 bool curvalid; /* is the current contact valid? */
9498f954 83 struct mt_slot *slots;
5519cab4
BT		 84};
85
5519cab4 86/* classes of device behavior */
22408283
BT		 87#define MT_CLS_DEFAULT 0x0001
88
a062cc5a
SC		 89#define MT_CLS_SERIAL 0x0002
90#define MT_CLS_CONFIDENCE 0x0003
91#define MT_CLS_CONFIDENCE_MINUS_ONE 0x0004
92#define MT_CLS_DUAL_INRANGE_CONTACTID 0x0005
93#define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0006
94#define MT_CLS_DUAL_NSMU_CONTACTID 0x0007
22408283
BT		 95
96/* vendor specific classes */
97#define MT_CLS_3M 0x0101
98#define MT_CLS_CYPRESS 0x0102
99#define MT_CLS_EGALAX 0x0103
1b723e8d 100#define MT_CLS_EGALAX_SERIAL 0x0104
5519cab4 101
9498f954
BT		 102#define MT_DEFAULT_MAXCONTACT 10
103
5519cab4
BT		 104/*
105 * these device-dependent functions determine what slot corresponds
106 * to a valid contact that was just read.
107 */
108
a3b5e577
BT		 109static int cypress_compute_slot(struct mt_device *td)
110{
111 if (td->curdata.contactid != 0 || td->num_received == 0)
112 return td->curdata.contactid;
113 else
114 return -1;
115}
116
5519cab4
BT		 117static int find_slot_from_contactid(struct mt_device *td)
118{
119 int i;
9498f954 120 for (i = 0; i < td->maxcontacts; ++i) {
5519cab4
BT		 121 if (td->slots[i].contactid == td->curdata.contactid &&
122 td->slots[i].touch_state)
123 return i;
124 }
9498f954 125 for (i = 0; i < td->maxcontacts; ++i) {
5519cab4
BT		 126 if (!td->slots[i].seen_in_this_frame &&
127 !td->slots[i].touch_state)
128 return i;
129 }
5519cab4
BT		 130 /* should not occurs. If this happens that means
131 * that the device sent more touches that it says
132 * in the report descriptor. It is ignored then. */
2d93666e 133 return -1;
5519cab4
BT		 134}
135
136struct mt_class mt_classes[] = {
2d93666e 137 { .name = MT_CLS_DEFAULT,
9498f954 138 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
a062cc5a
SC		 139 { .name = MT_CLS_SERIAL,
140 .quirks = MT_QUIRK_ALWAYS_VALID},
22408283
BT		 141 { .name = MT_CLS_CONFIDENCE,
142 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
143 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
144 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
145 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
1e9cf35b 146 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
2d93666e
BT		 147 .quirks = MT_QUIRK_VALID_IS_INRANGE |
148 MT_QUIRK_SLOT_IS_CONTACTID,
149 .maxcontacts = 2 },
1e9cf35b 150 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
2d93666e
BT		 151 .quirks = MT_QUIRK_VALID_IS_INRANGE |
152 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
153 .maxcontacts = 2 },
22408283
BT		 154 { .name = MT_CLS_DUAL_NSMU_CONTACTID,
155 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
156 MT_QUIRK_SLOT_IS_CONTACTID,
157 .maxcontacts = 2 },
158
159 /*
160 * vendor specific classes
161 */
162 { .name = MT_CLS_3M,
163 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
164 MT_QUIRK_SLOT_IS_CONTACTID,
165 .sn_move = 2048,
166 .sn_width = 128,
167 .sn_height = 128 },
2d93666e
BT		 168 { .name = MT_CLS_CYPRESS,
169 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
170 MT_QUIRK_CYPRESS,
171 .maxcontacts = 10 },
4875ac11
RN		 172 { .name = MT_CLS_EGALAX,
173 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
2261bb9f 174 MT_QUIRK_VALID_IS_INRANGE,
4875ac11
RN		 175 .sn_move = 4096,
176 .sn_pressure = 32,
177 },
1b723e8d
BT		 178 { .name = MT_CLS_EGALAX_SERIAL,
179 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
180 MT_QUIRK_ALWAYS_VALID,
181 .sn_move = 4096,
182 .sn_pressure = 32,
183 },
043b403a 184
2d93666e 185 { }
5519cab4
BT		 186};
187
eec29e3d
BT		 188static ssize_t mt_show_quirks(struct device *dev,
189 struct device_attribute *attr,
190 char *buf)
191{
192 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
193 struct mt_device *td = hid_get_drvdata(hdev);
194
195 return sprintf(buf, "%u\n", td->mtclass.quirks);
196}
197
198static ssize_t mt_set_quirks(struct device *dev,
199 struct device_attribute *attr,
200 const char *buf, size_t count)
201{
202 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
203 struct mt_device *td = hid_get_drvdata(hdev);
204
205 unsigned long val;
206
207 if (kstrtoul(buf, 0, &val))
208 return -EINVAL;
209
210 td->mtclass.quirks = val;
211
212 return count;
213}
214
215static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
216
217static struct attribute *sysfs_attrs[] = {
218 &dev_attr_quirks.attr,
219 NULL
220};
221
222static struct attribute_group mt_attribute_group = {
223 .attrs = sysfs_attrs
224};
225
f635bd11 226static void mt_feature_mapping(struct hid_device *hdev,
5519cab4
BT		 227 struct hid_field *field, struct hid_usage *usage)
228{
9498f954
BT		 229 struct mt_device *td = hid_get_drvdata(hdev);
230
231 switch (usage->hid) {
232 case HID_DG_INPUTMODE:
5519cab4 233 td->inputmode = field->report->id;
9498f954
BT		 234 break;
235 case HID_DG_CONTACTMAX:
236 td->maxcontacts = field->value[0];
eec29e3d 237 if (td->mtclass.maxcontacts)
9498f954 238 /* check if the maxcontacts is given by the class */
eec29e3d 239 td->maxcontacts = td->mtclass.maxcontacts;
9498f954
BT		 240
241 break;
5519cab4
BT		 242 }
243}
244
245static void set_abs(struct input_dev *input, unsigned int code,
246 struct hid_field *field, int snratio)
247{
248 int fmin = field->logical_minimum;
249 int fmax = field->logical_maximum;
250 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
251 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
252}
253
254static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
255 struct hid_field *field, struct hid_usage *usage,
256 unsigned long **bit, int *max)
257{
258 struct mt_device *td = hid_get_drvdata(hdev);
eec29e3d 259 struct mt_class *cls = &td->mtclass;
4875ac11 260
658d4aed
JB		 261 /* Only map fields from TouchScreen or TouchPad collections.
262 * We need to ignore fields that belong to other collections
263 * such as Mouse that might have the same GenericDesktop usages. */
264 if (field->application == HID_DG_TOUCHSCREEN)
265 set_bit(INPUT_PROP_DIRECT, hi->input->propbit);
266 else if (field->application == HID_DG_TOUCHPAD)
267 set_bit(INPUT_PROP_POINTER, hi->input->propbit);
268 else
269 return 0;
270
2261bb9f
BT		 271 /* eGalax devices provide a Digitizer.Stylus input which overrides
272 * the correct Digitizers.Finger X/Y ranges.
273 * Let's just ignore this input. */
274 if (field->physical == HID_DG_STYLUS)
275 return -1;
276
5519cab4
BT		 277 switch (usage->hid & HID_USAGE_PAGE) {
278
279 case HID_UP_GENDESK:
280 switch (usage->hid) {
281 case HID_GD_X:
282 hid_map_usage(hi, usage, bit, max,
283 EV_ABS, ABS_MT_POSITION_X);
284 set_abs(hi->input, ABS_MT_POSITION_X, field,
285 cls->sn_move);
286 /* touchscreen emulation */
287 set_abs(hi->input, ABS_X, field, cls->sn_move);
b84bd27f
BT		 288 if (td->last_mt_collection == usage->collection_index) {
289 td->last_slot_field = usage->hid;
290 td->last_field_index = field->index;
291 }
5519cab4
BT		 292 return 1;
293 case HID_GD_Y:
294 hid_map_usage(hi, usage, bit, max,
295 EV_ABS, ABS_MT_POSITION_Y);
296 set_abs(hi->input, ABS_MT_POSITION_Y, field,
297 cls->sn_move);
298 /* touchscreen emulation */
299 set_abs(hi->input, ABS_Y, field, cls->sn_move);
b84bd27f
BT		 300 if (td->last_mt_collection == usage->collection_index) {
301 td->last_slot_field = usage->hid;
302 td->last_field_index = field->index;
303 }
5519cab4
BT		 304 return 1;
305 }
306 return 0;
307
308 case HID_UP_DIGITIZER:
309 switch (usage->hid) {
310 case HID_DG_INRANGE:
b84bd27f
BT		 311 if (td->last_mt_collection == usage->collection_index) {
312 td->last_slot_field = usage->hid;
313 td->last_field_index = field->index;
314 }
5519cab4
BT		 315 return 1;
316 case HID_DG_CONFIDENCE:
b84bd27f
BT		 317 if (td->last_mt_collection == usage->collection_index) {
318 td->last_slot_field = usage->hid;
319 td->last_field_index = field->index;
320 }
5519cab4
BT		 321 return 1;
322 case HID_DG_TIPSWITCH:
323 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
324 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
b84bd27f
BT		 325 if (td->last_mt_collection == usage->collection_index) {
326 td->last_slot_field = usage->hid;
327 td->last_field_index = field->index;
328 }
5519cab4
BT		 329 return 1;
330 case HID_DG_CONTACTID:
50bc03ab
BT		 331 if (!td->maxcontacts)
332 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
9498f954 333 input_mt_init_slots(hi->input, td->maxcontacts);
5519cab4 334 td->last_slot_field = usage->hid;
2955caed 335 td->last_field_index = field->index;
b84bd27f 336 td->last_mt_collection = usage->collection_index;
5519cab4
BT		 337 return 1;
338 case HID_DG_WIDTH:
339 hid_map_usage(hi, usage, bit, max,
340 EV_ABS, ABS_MT_TOUCH_MAJOR);
f786bba4
BT		 341 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
342 cls->sn_width);
b84bd27f
BT		 343 if (td->last_mt_collection == usage->collection_index) {
344 td->last_slot_field = usage->hid;
345 td->last_field_index = field->index;
346 }
5519cab4
BT		 347 return 1;
348 case HID_DG_HEIGHT:
349 hid_map_usage(hi, usage, bit, max,
350 EV_ABS, ABS_MT_TOUCH_MINOR);
f786bba4
BT		 351 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
352 cls->sn_height);
1e648a13
BT		 353 input_set_abs_params(hi->input,
354 ABS_MT_ORIENTATION, 0, 1, 0, 0);
b84bd27f
BT		 355 if (td->last_mt_collection == usage->collection_index) {
356 td->last_slot_field = usage->hid;
357 td->last_field_index = field->index;
358 }
5519cab4
BT		 359 return 1;
360 case HID_DG_TIPPRESSURE:
361 hid_map_usage(hi, usage, bit, max,
362 EV_ABS, ABS_MT_PRESSURE);
363 set_abs(hi->input, ABS_MT_PRESSURE, field,
364 cls->sn_pressure);
365 /* touchscreen emulation */
366 set_abs(hi->input, ABS_PRESSURE, field,
367 cls->sn_pressure);
b84bd27f
BT		 368 if (td->last_mt_collection == usage->collection_index) {
369 td->last_slot_field = usage->hid;
370 td->last_field_index = field->index;
371 }
5519cab4
BT		 372 return 1;
373 case HID_DG_CONTACTCOUNT:
b84bd27f
BT		 374 if (td->last_mt_collection == usage->collection_index)
375 td->last_field_index = field->index;
5519cab4
BT		 376 return 1;
377 case HID_DG_CONTACTMAX:
378 /* we don't set td->last_slot_field as contactcount and
379 * contact max are global to the report */
b84bd27f
BT		 380 if (td->last_mt_collection == usage->collection_index)
381 td->last_field_index = field->index;
5519cab4
BT		 382 return -1;
383 }
384 /* let hid-input decide for the others */
385 return 0;
386
387 case 0xff000000:
388 /* we do not want to map these: no input-oriented meaning */
389 return -1;
390 }
391
392 return 0;
393}
394
395static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
396 struct hid_field *field, struct hid_usage *usage,
397 unsigned long **bit, int *max)
398{
399 if (usage->type == EV_KEY || usage->type == EV_ABS)
400 set_bit(usage->type, hi->input->evbit);
401
402 return -1;
403}
404
405static int mt_compute_slot(struct mt_device *td)
406{
eec29e3d 407 __s32 quirks = td->mtclass.quirks;
5519cab4 408
2d93666e
BT		 409 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
410 return td->curdata.contactid;
5519cab4 411
2d93666e 412 if (quirks & MT_QUIRK_CYPRESS)
a3b5e577
BT		 413 return cypress_compute_slot(td);
414
2d93666e
BT		 415 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
416 return td->num_received;
5572da08 417
4a6ee685
BT		 418 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
419 return td->curdata.contactid - 1;
420
5519cab4
BT		 421 return find_slot_from_contactid(td);
422}
423
424/*
425 * this function is called when a whole contact has been processed,
426 * so that it can assign it to a slot and store the data there
427 */
428static void mt_complete_slot(struct mt_device *td)
429{
2d93666e 430 td->curdata.seen_in_this_frame = true;
5519cab4 431 if (td->curvalid) {
5519cab4
BT		 432 int slotnum = mt_compute_slot(td);
433
9498f954 434 if (slotnum >= 0 && slotnum < td->maxcontacts)
2d93666e 435 td->slots[slotnum] = td->curdata;
5519cab4
BT		 436 }
437 td->num_received++;
438}
439
440
441/*
442 * this function is called when a whole packet has been received and processed,
443 * so that it can decide what to send to the input layer.
444 */
445static void mt_emit_event(struct mt_device *td, struct input_dev *input)
446{
447 int i;
448
9498f954 449 for (i = 0; i < td->maxcontacts; ++i) {
5519cab4 450 struct mt_slot *s = &(td->slots[i]);
eec29e3d 451 if ((td->mtclass.quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
5519cab4 452 !s->seen_in_this_frame) {
5519cab4
BT		 453 s->touch_state = false;
454 }
455
456 input_mt_slot(input, i);
457 input_mt_report_slot_state(input, MT_TOOL_FINGER,
458 s->touch_state);
2d93666e 459 if (s->touch_state) {
f786bba4
BT		 460 /* this finger is on the screen */
461 int wide = (s->w > s->h);
462 /* divided by two to match visual scale of touch */
463 int major = max(s->w, s->h) >> 1;
464 int minor = min(s->w, s->h) >> 1;
465
2d93666e
BT		 466 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
467 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
f786bba4 468 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
2d93666e 469 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
f786bba4
BT		 470 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
471 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
2d93666e 472 }
5519cab4
BT		 473 s->seen_in_this_frame = false;
474
475 }
476
477 input_mt_report_pointer_emulation(input, true);
478 input_sync(input);
479 td->num_received = 0;
480}
481
482
483
484static int mt_event(struct hid_device *hid, struct hid_field *field,
485 struct hid_usage *usage, __s32 value)
486{
487 struct mt_device *td = hid_get_drvdata(hid);
eec29e3d 488 __s32 quirks = td->mtclass.quirks;
5519cab4 489
9498f954 490 if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
5519cab4
BT		 491 switch (usage->hid) {
492 case HID_DG_INRANGE:
a062cc5a
SC		 493 if (quirks & MT_QUIRK_ALWAYS_VALID)
494 td->curvalid = true;
495 else if (quirks & MT_QUIRK_VALID_IS_INRANGE)
2d93666e 496 td->curvalid = value;
5519cab4
BT		 497 break;
498 case HID_DG_TIPSWITCH:
2d93666e
BT		 499 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
500 td->curvalid = value;
5519cab4
BT		 501 td->curdata.touch_state = value;
502 break;
503 case HID_DG_CONFIDENCE:
2d93666e
BT		 504 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
505 td->curvalid = value;
5519cab4
BT		 506 break;
507 case HID_DG_CONTACTID:
508 td->curdata.contactid = value;
509 break;
510 case HID_DG_TIPPRESSURE:
511 td->curdata.p = value;
512 break;
513 case HID_GD_X:
514 td->curdata.x = value;
515 break;
516 case HID_GD_Y:
517 td->curdata.y = value;
518 break;
519 case HID_DG_WIDTH:
520 td->curdata.w = value;
521 break;
522 case HID_DG_HEIGHT:
523 td->curdata.h = value;
524 break;
525 case HID_DG_CONTACTCOUNT:
526 /*
2d93666e
BT		 527 * Includes multi-packet support where subsequent
528 * packets are sent with zero contactcount.
5519cab4
BT		 529 */
530 if (value)
2d93666e 531 td->num_expected = value;
5519cab4
BT		 532 break;
533
534 default:
535 /* fallback to the generic hidinput handling */
536 return 0;
537 }
5519cab4 538
f153fc39 539 if (usage->hid == td->last_slot_field) {
2d93666e 540 mt_complete_slot(td);
f153fc39 541 }
2d93666e
BT		 542
543 if (field->index == td->last_field_index
544 && td->num_received >= td->num_expected)
545 mt_emit_event(td, field->hidinput->input);
5519cab4 546
2d93666e 547 }
5519cab4
BT		 548
549 /* we have handled the hidinput part, now remains hiddev */
550 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
551 hid->hiddev_hid_event(hid, field, usage, value);
552
553 return 1;
554}
555
556static void mt_set_input_mode(struct hid_device *hdev)
557{
558 struct mt_device *td = hid_get_drvdata(hdev);
559 struct hid_report *r;
560 struct hid_report_enum *re;
561
562 if (td->inputmode < 0)
563 return;
564
565 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
566 r = re->report_id_hash[td->inputmode];
567 if (r) {
568 r->field[0]->value[0] = 0x02;
569 usbhid_submit_report(hdev, r, USB_DIR_OUT);
570 }
571}
572
573static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
574{
2d93666e 575 int ret, i;
5519cab4 576 struct mt_device *td;
2d93666e
BT		 577 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
578
579 for (i = 0; mt_classes[i].name ; i++) {
580 if (id->driver_data == mt_classes[i].name) {
581 mtclass = &(mt_classes[i]);
582 break;
583 }
584 }
5519cab4 585
d682bd7f
HR		 586 /* This allows the driver to correctly support devices
587 * that emit events over several HID messages.
588 */
589 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
5519cab4 590
9498f954 591 td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
5519cab4
BT		 592 if (!td) {
593 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
594 return -ENOMEM;
595 }
eec29e3d 596 td->mtclass = *mtclass;
5519cab4 597 td->inputmode = -1;
b84bd27f 598 td->last_mt_collection = -1;
5519cab4
BT		 599 hid_set_drvdata(hdev, td);
600
601 ret = hid_parse(hdev);
602 if (ret != 0)
603 goto fail;
604
605 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
2d93666e 606 if (ret)
5519cab4
BT		 607 goto fail;
608
9498f954
BT		 609 td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
610 GFP_KERNEL);
611 if (!td->slots) {
612 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
613 hid_hw_stop(hdev);
614 ret = -ENOMEM;
615 goto fail;
616 }
617
eec29e3d
BT		 618 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
619
5519cab4
BT		 620 mt_set_input_mode(hdev);
621
622 return 0;
623
624fail:
625 kfree(td);
626 return ret;
627}
628
629#ifdef CONFIG_PM
630static int mt_reset_resume(struct hid_device *hdev)
631{
632 mt_set_input_mode(hdev);
633 return 0;
634}
635#endif
636
637static void mt_remove(struct hid_device *hdev)
638{
639 struct mt_device *td = hid_get_drvdata(hdev);
eec29e3d 640 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
5519cab4 641 hid_hw_stop(hdev);
9498f954 642 kfree(td->slots);
5519cab4
BT		 643 kfree(td);
644 hid_set_drvdata(hdev, NULL);
645}
646
647static const struct hid_device_id mt_devices[] = {
648
f786bba4
BT		 649 /* 3M panels */
650 { .driver_data = MT_CLS_3M,
651 HID_USB_DEVICE(USB_VENDOR_ID_3M,
652 USB_DEVICE_ID_3M1968) },
653 { .driver_data = MT_CLS_3M,
654 HID_USB_DEVICE(USB_VENDOR_ID_3M,
655 USB_DEVICE_ID_3M2256) },
656
e6aac342
BT		 657 /* ActionStar panels */
658 { .driver_data = MT_CLS_DEFAULT,
659 HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
660 USB_DEVICE_ID_ACTIONSTAR_1011) },
661
a841b62c
BT		 662 /* Cando panels */
663 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
664 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
665 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
666 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
667 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
668 USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
669 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
670 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
671 USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
672 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
673 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
674 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
675
942fd422
AZ		 676 /* Chunghwa Telecom touch panels */
677 { .driver_data = MT_CLS_DEFAULT,
678 HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
679 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
680
79603dc9
BT		 681 /* CVTouch panels */
682 { .driver_data = MT_CLS_DEFAULT,
683 HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
684 USB_DEVICE_ID_CVTOUCH_SCREEN) },
685
a3b5e577
BT		 686 /* Cypress panel */
687 { .driver_data = MT_CLS_CYPRESS,
688 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
689 USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
690
22408283 691 /* eGalax devices (resistive) */
e36f690b 692 { .driver_data = MT_CLS_EGALAX,
22408283 693 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b
BT		 694 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
695 { .driver_data = MT_CLS_EGALAX,
22408283 696 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b 697 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
22408283
BT		 698
699 /* eGalax devices (capacitive) */
e36f690b 700 { .driver_data = MT_CLS_EGALAX,
22408283 701 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b
BT		 702 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
703 { .driver_data = MT_CLS_EGALAX,
22408283 704 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b
BT		 705 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
706 { .driver_data = MT_CLS_EGALAX,
22408283 707 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b 708 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
66f06127
BT		 709 { .driver_data = MT_CLS_EGALAX,
710 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
711 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
bb9ff210
MV		 712 { .driver_data = MT_CLS_EGALAX,
713 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
714 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1b723e8d 715 { .driver_data = MT_CLS_EGALAX_SERIAL,
1fd8f047 716 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b 717 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
22408283 718
c04abeef
BT		 719 /* Elo TouchSystems IntelliTouch Plus panel */
720 { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
721 HID_USB_DEVICE(USB_VENDOR_ID_ELO,
722 USB_DEVICE_ID_ELO_TS2515) },
723
5572da08 724 /* GeneralTouch panel */
1e9cf35b 725 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
5572da08
BT		 726 HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
727 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
728
ee0fbd14
BT		 729 /* GoodTouch panels */
730 { .driver_data = MT_CLS_DEFAULT,
731 HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
732 USB_DEVICE_ID_GOODTOUCH_000f) },
733
a062cc5a
SC		 734 /* Ideacom panel */
735 { .driver_data = MT_CLS_SERIAL,
736 HID_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
737 USB_DEVICE_ID_IDEACOM_IDC6650) },
738
4e61f0d7
AZ		 739 /* Ilitek dual touch panel */
740 { .driver_data = MT_CLS_DEFAULT,
741 HID_USB_DEVICE(USB_VENDOR_ID_ILITEK,
742 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
743
4dfcced8
BT		 744 /* IRTOUCH panels */
745 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
746 HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
747 USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
748
c50bb1a4
JB		 749 /* LG Display panels */
750 { .driver_data = MT_CLS_DEFAULT,
751 HID_USB_DEVICE(USB_VENDOR_ID_LG,
752 USB_DEVICE_ID_LG_MULTITOUCH) },
753
df167c4a
BT		 754 /* Lumio panels */
755 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
756 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
757 USB_DEVICE_ID_CRYSTALTOUCH) },
c3ead6de
BT		 758 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
759 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
760 USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
df167c4a 761
4a6ee685
BT		 762 /* MosArt panels */
763 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
764 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
765 USB_DEVICE_ID_ASUS_T91MT)},
766 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
767 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
768 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
769 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
770 HID_USB_DEVICE(USB_VENDOR_ID_TURBOX,
771 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
772
6ab3a9a6
JS		 773 /* PenMount panels */
774 { .driver_data = MT_CLS_CONFIDENCE,
775 HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
776 USB_DEVICE_ID_PENMOUNT_PCI) },
777
5519cab4 778 /* PixCir-based panels */
1e9cf35b 779 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
5519cab4
BT		 780 HID_USB_DEVICE(USB_VENDOR_ID_HANVON,
781 USB_DEVICE_ID_HANVON_MULTITOUCH) },
1e9cf35b 782 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
5519cab4
BT		 783 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
784 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
785
043b403a 786 /* Stantum panels */
bf5af9b5 787 { .driver_data = MT_CLS_CONFIDENCE,
043b403a
BT		 788 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
789 USB_DEVICE_ID_MTP)},
bf5af9b5 790 { .driver_data = MT_CLS_CONFIDENCE,
85a60082 791 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
043b403a 792 USB_DEVICE_ID_MTP_STM)},
bf5af9b5 793 { .driver_data = MT_CLS_CONFIDENCE,
85a60082 794 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
043b403a
BT		 795 USB_DEVICE_ID_MTP_SITRONIX)},
796
5e74e56d
BT		 797 /* Touch International panels */
798 { .driver_data = MT_CLS_DEFAULT,
799 HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
800 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
801
617b64f9
BT		 802 /* Unitec panels */
803 { .driver_data = MT_CLS_DEFAULT,
804 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
805 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
806 { .driver_data = MT_CLS_DEFAULT,
807 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
808 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
bc8a2a9b 809 /* XAT */
810 { .driver_data = MT_CLS_DEFAULT,
811 HID_USB_DEVICE(USB_VENDOR_ID_XAT,
812 USB_DEVICE_ID_XAT_CSR) },
617b64f9 813
5519cab4
BT		 814 { }
815};
816MODULE_DEVICE_TABLE(hid, mt_devices);
817
818static const struct hid_usage_id mt_grabbed_usages[] = {
819 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
820 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
821};
822
823static struct hid_driver mt_driver = {
824 .name = "hid-multitouch",
825 .id_table = mt_devices,
826 .probe = mt_probe,
827 .remove = mt_remove,
828 .input_mapping = mt_input_mapping,
829 .input_mapped = mt_input_mapped,
830 .feature_mapping = mt_feature_mapping,
831 .usage_table = mt_grabbed_usages,
832 .event = mt_event,
833#ifdef CONFIG_PM
834 .reset_resume = mt_reset_resume,
835#endif
836};
837
838static int __init mt_init(void)
839{
840 return hid_register_driver(&mt_driver);
841}
842
843static void __exit mt_exit(void)
844{
845 hid_unregister_driver(&mt_driver);
846}
847
848module_init(mt_init);
849module_exit(mt_exit);
Ubuntu Eoan Linux kernel mirror