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HID: multitouch: add support for trackpads
[mirror_ubuntu-hirsute-kernel.git] / drivers / hid / hid-multitouch.c
CommitLineData
5519cab4
BT		 1/*
2 * HID driver for multitouch panels
3 *
c2ef8f21
BT		 4 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
5 * Copyright (c) 2010-2012 Benjamin Tissoires <benjamin.tissoires@gmail.com>
6 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
5519cab4 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;
c2ef8f21 70 bool is_indirect; /* true for touchpads */
eec29e3d
BT		 71};
72
5519cab4
BT		 73struct mt_device {
74 struct mt_slot curdata; /* placeholder of incoming data */
eec29e3d 75 struct mt_class mtclass; /* our mt device class */
5519cab4
BT		 76 unsigned last_field_index; /* last field index of the report */
77 unsigned last_slot_field; /* the last field of a slot */
b84bd27f 78 int last_mt_collection; /* last known mt-related collection */
5519cab4
BT		 79 __s8 inputmode; /* InputMode HID feature, -1 if non-existent */
80 __u8 num_received; /* how many contacts we received */
81 __u8 num_expected; /* expected last contact index */
9498f954 82 __u8 maxcontacts;
5519cab4 83 bool curvalid; /* is the current contact valid? */
9498f954 84 struct mt_slot *slots;
5519cab4
BT		 85};
86
5519cab4 87/* classes of device behavior */
22408283
BT		 88#define MT_CLS_DEFAULT 0x0001
89
a062cc5a
SC		 90#define MT_CLS_SERIAL 0x0002
91#define MT_CLS_CONFIDENCE 0x0003
5e7ea11f
BT		 92#define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
93#define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
94#define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
95#define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
96#define MT_CLS_DUAL_NSMU_CONTACTID 0x0008
b7ea95ff 97#define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
22408283
BT		 98
99/* vendor specific classes */
100#define MT_CLS_3M 0x0101
101#define MT_CLS_CYPRESS 0x0102
102#define MT_CLS_EGALAX 0x0103
1b723e8d 103#define MT_CLS_EGALAX_SERIAL 0x0104
5519cab4 104
9498f954
BT		 105#define MT_DEFAULT_MAXCONTACT 10
106
5519cab4
BT		 107/*
108 * these device-dependent functions determine what slot corresponds
109 * to a valid contact that was just read.
110 */
111
a3b5e577
BT		 112static int cypress_compute_slot(struct mt_device *td)
113{
114 if (td->curdata.contactid != 0 || td->num_received == 0)
115 return td->curdata.contactid;
116 else
117 return -1;
118}
119
5519cab4
BT		 120static int find_slot_from_contactid(struct mt_device *td)
121{
122 int i;
9498f954 123 for (i = 0; i < td->maxcontacts; ++i) {
5519cab4
BT		 124 if (td->slots[i].contactid == td->curdata.contactid &&
125 td->slots[i].touch_state)
126 return i;
127 }
9498f954 128 for (i = 0; i < td->maxcontacts; ++i) {
5519cab4
BT		 129 if (!td->slots[i].seen_in_this_frame &&
130 !td->slots[i].touch_state)
131 return i;
132 }
5519cab4
BT		 133 /* should not occurs. If this happens that means
134 * that the device sent more touches that it says
135 * in the report descriptor. It is ignored then. */
2d93666e 136 return -1;
5519cab4
BT		 137}
138
b3c21d2c 139static struct mt_class mt_classes[] = {
2d93666e 140 { .name = MT_CLS_DEFAULT,
9498f954 141 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
a062cc5a
SC		 142 { .name = MT_CLS_SERIAL,
143 .quirks = MT_QUIRK_ALWAYS_VALID},
22408283
BT		 144 { .name = MT_CLS_CONFIDENCE,
145 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
5e7ea11f
BT		 146 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
147 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
148 MT_QUIRK_SLOT_IS_CONTACTID },
22408283
BT		 149 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
150 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
151 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
1e9cf35b 152 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
2d93666e
BT		 153 .quirks = MT_QUIRK_VALID_IS_INRANGE |
154 MT_QUIRK_SLOT_IS_CONTACTID,
155 .maxcontacts = 2 },
1e9cf35b 156 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
2d93666e
BT		 157 .quirks = MT_QUIRK_VALID_IS_INRANGE |
158 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
159 .maxcontacts = 2 },
22408283
BT		 160 { .name = MT_CLS_DUAL_NSMU_CONTACTID,
161 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
162 MT_QUIRK_SLOT_IS_CONTACTID,
163 .maxcontacts = 2 },
b7ea95ff
AT		 164 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
165 .quirks = MT_QUIRK_VALID_IS_INRANGE |
166 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
22408283
BT		 167
168 /*
169 * vendor specific classes
170 */
171 { .name = MT_CLS_3M,
172 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
173 MT_QUIRK_SLOT_IS_CONTACTID,
174 .sn_move = 2048,
175 .sn_width = 128,
176 .sn_height = 128 },
2d93666e
BT		 177 { .name = MT_CLS_CYPRESS,
178 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
179 MT_QUIRK_CYPRESS,
180 .maxcontacts = 10 },
4875ac11
RN		 181 { .name = MT_CLS_EGALAX,
182 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
2261bb9f 183 MT_QUIRK_VALID_IS_INRANGE,
4875ac11
RN		 184 .sn_move = 4096,
185 .sn_pressure = 32,
186 },
1b723e8d
BT		 187 { .name = MT_CLS_EGALAX_SERIAL,
188 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
189 MT_QUIRK_ALWAYS_VALID,
4875ac11
RN		 190 .sn_move = 4096,
191 .sn_pressure = 32,
192 },
043b403a 193
2d93666e 194 { }
5519cab4
BT		 195};
196
eec29e3d
BT		 197static ssize_t mt_show_quirks(struct device *dev,
198 struct device_attribute *attr,
199 char *buf)
200{
201 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
202 struct mt_device *td = hid_get_drvdata(hdev);
203
204 return sprintf(buf, "%u\n", td->mtclass.quirks);
205}
206
207static ssize_t mt_set_quirks(struct device *dev,
208 struct device_attribute *attr,
209 const char *buf, size_t count)
210{
211 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
212 struct mt_device *td = hid_get_drvdata(hdev);
213
214 unsigned long val;
215
216 if (kstrtoul(buf, 0, &val))
217 return -EINVAL;
218
219 td->mtclass.quirks = val;
220
221 return count;
222}
223
224static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
225
226static struct attribute *sysfs_attrs[] = {
227 &dev_attr_quirks.attr,
228 NULL
229};
230
231static struct attribute_group mt_attribute_group = {
232 .attrs = sysfs_attrs
233};
234
f635bd11 235static void mt_feature_mapping(struct hid_device *hdev,
5519cab4
BT		 236 struct hid_field *field, struct hid_usage *usage)
237{
9498f954
BT		 238 struct mt_device *td = hid_get_drvdata(hdev);
239
240 switch (usage->hid) {
241 case HID_DG_INPUTMODE:
5519cab4 242 td->inputmode = field->report->id;
9498f954
BT		 243 break;
244 case HID_DG_CONTACTMAX:
245 td->maxcontacts = field->value[0];
eec29e3d 246 if (td->mtclass.maxcontacts)
9498f954 247 /* check if the maxcontacts is given by the class */
eec29e3d 248 td->maxcontacts = td->mtclass.maxcontacts;
9498f954
BT		 249
250 break;
5519cab4
BT		 251 }
252}
253
254static void set_abs(struct input_dev *input, unsigned int code,
255 struct hid_field *field, int snratio)
256{
257 int fmin = field->logical_minimum;
258 int fmax = field->logical_maximum;
259 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
260 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
261}
262
263static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
264 struct hid_field *field, struct hid_usage *usage,
265 unsigned long **bit, int *max)
266{
267 struct mt_device *td = hid_get_drvdata(hdev);
eec29e3d 268 struct mt_class *cls = &td->mtclass;
c2ef8f21 269 int code;
4875ac11 270
658d4aed
JB		 271 /* Only map fields from TouchScreen or TouchPad collections.
272 * We need to ignore fields that belong to other collections
273 * such as Mouse that might have the same GenericDesktop usages. */
274 if (field->application == HID_DG_TOUCHSCREEN)
275 set_bit(INPUT_PROP_DIRECT, hi->input->propbit);
c2ef8f21 276 else if (field->application != HID_DG_TOUCHPAD)
658d4aed
JB		 277 return 0;
278
c2ef8f21
BT		 279 /* In case of an indirect device (touchpad), we need to add
280 * specific BTN_TOOL_* to be handled by the synaptics xorg
281 * driver.
282 * We also consider that touchscreens providing buttons are touchpads.
283 */
284 if (field->application == HID_DG_TOUCHPAD ||
285 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON ||
286 cls->is_indirect) {
287 set_bit(INPUT_PROP_POINTER, hi->input->propbit);
288 set_bit(BTN_TOOL_FINGER, hi->input->keybit);
289 set_bit(BTN_TOOL_DOUBLETAP, hi->input->keybit);
290 set_bit(BTN_TOOL_TRIPLETAP, hi->input->keybit);
291 set_bit(BTN_TOOL_QUADTAP, hi->input->keybit);
292 }
293
2261bb9f
BT		 294 /* eGalax devices provide a Digitizer.Stylus input which overrides
295 * the correct Digitizers.Finger X/Y ranges.
296 * Let's just ignore this input. */
297 if (field->physical == HID_DG_STYLUS)
298 return -1;
299
5519cab4
BT		 300 switch (usage->hid & HID_USAGE_PAGE) {
301
302 case HID_UP_GENDESK:
303 switch (usage->hid) {
304 case HID_GD_X:
305 hid_map_usage(hi, usage, bit, max,
306 EV_ABS, ABS_MT_POSITION_X);
307 set_abs(hi->input, ABS_MT_POSITION_X, field,
308 cls->sn_move);
309 /* touchscreen emulation */
310 set_abs(hi->input, ABS_X, field, cls->sn_move);
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_GD_Y:
317 hid_map_usage(hi, usage, bit, max,
318 EV_ABS, ABS_MT_POSITION_Y);
319 set_abs(hi->input, ABS_MT_POSITION_Y, field,
320 cls->sn_move);
321 /* touchscreen emulation */
322 set_abs(hi->input, ABS_Y, field, cls->sn_move);
b84bd27f
BT		 323 if (td->last_mt_collection == usage->collection_index) {
324 td->last_slot_field = usage->hid;
325 td->last_field_index = field->index;
326 }
5519cab4
BT		 327 return 1;
328 }
329 return 0;
330
331 case HID_UP_DIGITIZER:
332 switch (usage->hid) {
333 case HID_DG_INRANGE:
b84bd27f
BT		 334 if (td->last_mt_collection == usage->collection_index) {
335 td->last_slot_field = usage->hid;
336 td->last_field_index = field->index;
337 }
5519cab4
BT		 338 return 1;
339 case HID_DG_CONFIDENCE:
b84bd27f
BT		 340 if (td->last_mt_collection == usage->collection_index) {
341 td->last_slot_field = usage->hid;
342 td->last_field_index = field->index;
343 }
5519cab4
BT		 344 return 1;
345 case HID_DG_TIPSWITCH:
346 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
347 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
b84bd27f
BT		 348 if (td->last_mt_collection == usage->collection_index) {
349 td->last_slot_field = usage->hid;
350 td->last_field_index = field->index;
351 }
5519cab4
BT		 352 return 1;
353 case HID_DG_CONTACTID:
50bc03ab
BT		 354 if (!td->maxcontacts)
355 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
9498f954 356 input_mt_init_slots(hi->input, td->maxcontacts);
5519cab4 357 td->last_slot_field = usage->hid;
2955caed 358 td->last_field_index = field->index;
b84bd27f 359 td->last_mt_collection = usage->collection_index;
5519cab4
BT		 360 return 1;
361 case HID_DG_WIDTH:
362 hid_map_usage(hi, usage, bit, max,
363 EV_ABS, ABS_MT_TOUCH_MAJOR);
f786bba4
BT		 364 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
365 cls->sn_width);
b84bd27f
BT		 366 if (td->last_mt_collection == usage->collection_index) {
367 td->last_slot_field = usage->hid;
368 td->last_field_index = field->index;
369 }
5519cab4
BT		 370 return 1;
371 case HID_DG_HEIGHT:
372 hid_map_usage(hi, usage, bit, max,
373 EV_ABS, ABS_MT_TOUCH_MINOR);
f786bba4
BT		 374 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
375 cls->sn_height);
1e648a13
BT		 376 input_set_abs_params(hi->input,
377 ABS_MT_ORIENTATION, 0, 1, 0, 0);
b84bd27f
BT		 378 if (td->last_mt_collection == usage->collection_index) {
379 td->last_slot_field = usage->hid;
380 td->last_field_index = field->index;
381 }
5519cab4
BT		 382 return 1;
383 case HID_DG_TIPPRESSURE:
384 hid_map_usage(hi, usage, bit, max,
385 EV_ABS, ABS_MT_PRESSURE);
386 set_abs(hi->input, ABS_MT_PRESSURE, field,
387 cls->sn_pressure);
388 /* touchscreen emulation */
389 set_abs(hi->input, ABS_PRESSURE, field,
390 cls->sn_pressure);
b84bd27f
BT		 391 if (td->last_mt_collection == usage->collection_index) {
392 td->last_slot_field = usage->hid;
393 td->last_field_index = field->index;
394 }
5519cab4
BT		 395 return 1;
396 case HID_DG_CONTACTCOUNT:
b84bd27f
BT		 397 if (td->last_mt_collection == usage->collection_index)
398 td->last_field_index = field->index;
5519cab4
BT		 399 return 1;
400 case HID_DG_CONTACTMAX:
401 /* we don't set td->last_slot_field as contactcount and
402 * contact max are global to the report */
b84bd27f
BT		 403 if (td->last_mt_collection == usage->collection_index)
404 td->last_field_index = field->index;
5519cab4
BT		 405 return -1;
406 }
c2ef8f21
BT		 407 case HID_DG_TOUCH:
408 /* Legacy devices use TIPSWITCH and not TOUCH.
409 * Let's just ignore this field. */
410 return -1;
5519cab4
BT		 411 /* let hid-input decide for the others */
412 return 0;
413
c2ef8f21
BT		 414 case HID_UP_BUTTON:
415 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
416 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
417 input_set_capability(hi->input, EV_KEY, code);
418 return 1;
419
5519cab4
BT		 420 case 0xff000000:
421 /* we do not want to map these: no input-oriented meaning */
422 return -1;
423 }
424
425 return 0;
426}
427
428static int mt_input_mapped(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 if (usage->type == EV_KEY || usage->type == EV_ABS)
433 set_bit(usage->type, hi->input->evbit);
434
435 return -1;
436}
437
438static int mt_compute_slot(struct mt_device *td)
439{
eec29e3d 440 __s32 quirks = td->mtclass.quirks;
5519cab4 441
2d93666e
BT		 442 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
443 return td->curdata.contactid;
5519cab4 444
2d93666e 445 if (quirks & MT_QUIRK_CYPRESS)
a3b5e577
BT		 446 return cypress_compute_slot(td);
447
2d93666e
BT		 448 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
449 return td->num_received;
5572da08 450
4a6ee685
BT		 451 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
452 return td->curdata.contactid - 1;
453
5519cab4
BT		 454 return find_slot_from_contactid(td);
455}
456
457/*
458 * this function is called when a whole contact has been processed,
459 * so that it can assign it to a slot and store the data there
460 */
461static void mt_complete_slot(struct mt_device *td)
462{
2d93666e 463 td->curdata.seen_in_this_frame = true;
5519cab4 464 if (td->curvalid) {
5519cab4
BT		 465 int slotnum = mt_compute_slot(td);
466
9498f954 467 if (slotnum >= 0 && slotnum < td->maxcontacts)
2d93666e 468 td->slots[slotnum] = td->curdata;
5519cab4
BT		 469 }
470 td->num_received++;
471}
472
473
474/*
475 * this function is called when a whole packet has been received and processed,
476 * so that it can decide what to send to the input layer.
477 */
478static void mt_emit_event(struct mt_device *td, struct input_dev *input)
479{
480 int i;
481
9498f954 482 for (i = 0; i < td->maxcontacts; ++i) {
5519cab4 483 struct mt_slot *s = &(td->slots[i]);
eec29e3d 484 if ((td->mtclass.quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
5519cab4 485 !s->seen_in_this_frame) {
5519cab4
BT		 486 s->touch_state = false;
487 }
488
489 input_mt_slot(input, i);
490 input_mt_report_slot_state(input, MT_TOOL_FINGER,
491 s->touch_state);
2d93666e 492 if (s->touch_state) {
f786bba4
BT		 493 /* this finger is on the screen */
494 int wide = (s->w > s->h);
495 /* divided by two to match visual scale of touch */
496 int major = max(s->w, s->h) >> 1;
497 int minor = min(s->w, s->h) >> 1;
498
2d93666e
BT		 499 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
500 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
f786bba4 501 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
2d93666e 502 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
f786bba4
BT		 503 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
504 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
2d93666e 505 }
5519cab4
BT		 506 s->seen_in_this_frame = false;
507
508 }
509
510 input_mt_report_pointer_emulation(input, true);
511 input_sync(input);
512 td->num_received = 0;
513}
514
515
516
517static int mt_event(struct hid_device *hid, struct hid_field *field,
518 struct hid_usage *usage, __s32 value)
519{
520 struct mt_device *td = hid_get_drvdata(hid);
eec29e3d 521 __s32 quirks = td->mtclass.quirks;
5519cab4 522
9498f954 523 if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
5519cab4
BT		 524 switch (usage->hid) {
525 case HID_DG_INRANGE:
a062cc5a
SC		 526 if (quirks & MT_QUIRK_ALWAYS_VALID)
527 td->curvalid = true;
528 else if (quirks & MT_QUIRK_VALID_IS_INRANGE)
2d93666e 529 td->curvalid = value;
5519cab4
BT		 530 break;
531 case HID_DG_TIPSWITCH:
2d93666e
BT		 532 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
533 td->curvalid = value;
5519cab4
BT		 534 td->curdata.touch_state = value;
535 break;
536 case HID_DG_CONFIDENCE:
2d93666e
BT		 537 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
538 td->curvalid = value;
5519cab4
BT		 539 break;
540 case HID_DG_CONTACTID:
541 td->curdata.contactid = value;
542 break;
543 case HID_DG_TIPPRESSURE:
544 td->curdata.p = value;
545 break;
546 case HID_GD_X:
547 td->curdata.x = value;
548 break;
549 case HID_GD_Y:
550 td->curdata.y = value;
551 break;
552 case HID_DG_WIDTH:
553 td->curdata.w = value;
554 break;
555 case HID_DG_HEIGHT:
556 td->curdata.h = value;
557 break;
558 case HID_DG_CONTACTCOUNT:
559 /*
2d93666e
BT		 560 * Includes multi-packet support where subsequent
561 * packets are sent with zero contactcount.
5519cab4
BT		 562 */
563 if (value)
2d93666e 564 td->num_expected = value;
5519cab4 565 break;
c2ef8f21
BT		 566 case HID_DG_TOUCH:
567 /* do nothing */
568 break;
5519cab4
BT		 569
570 default:
571 /* fallback to the generic hidinput handling */
572 return 0;
573 }
5519cab4 574
f153fc39 575 if (usage->hid == td->last_slot_field) {
2d93666e 576 mt_complete_slot(td);
f153fc39 577 }
2d93666e
BT		 578
579 if (field->index == td->last_field_index
580 && td->num_received >= td->num_expected)
581 mt_emit_event(td, field->hidinput->input);
5519cab4 582
2d93666e 583 }
5519cab4
BT		 584
585 /* we have handled the hidinput part, now remains hiddev */
586 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
587 hid->hiddev_hid_event(hid, field, usage, value);
588
589 return 1;
590}
591
592static void mt_set_input_mode(struct hid_device *hdev)
593{
594 struct mt_device *td = hid_get_drvdata(hdev);
595 struct hid_report *r;
596 struct hid_report_enum *re;
597
598 if (td->inputmode < 0)
599 return;
600
601 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
602 r = re->report_id_hash[td->inputmode];
603 if (r) {
604 r->field[0]->value[0] = 0x02;
605 usbhid_submit_report(hdev, r, USB_DIR_OUT);
606 }
607}
608
609static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
610{
2d93666e 611 int ret, i;
5519cab4 612 struct mt_device *td;
2d93666e
BT		 613 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
614
615 for (i = 0; mt_classes[i].name ; i++) {
616 if (id->driver_data == mt_classes[i].name) {
617 mtclass = &(mt_classes[i]);
618 break;
619 }
620 }
5519cab4 621
d682bd7f
HR		 622 /* This allows the driver to correctly support devices
623 * that emit events over several HID messages.
624 */
625 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
5519cab4 626
9498f954 627 td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
5519cab4
BT		 628 if (!td) {
629 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
630 return -ENOMEM;
631 }
eec29e3d 632 td->mtclass = *mtclass;
5519cab4 633 td->inputmode = -1;
b84bd27f 634 td->last_mt_collection = -1;
5519cab4
BT		 635 hid_set_drvdata(hdev, td);
636
637 ret = hid_parse(hdev);
638 if (ret != 0)
639 goto fail;
640
641 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
2d93666e 642 if (ret)
5519cab4
BT		 643 goto fail;
644
9498f954
BT		 645 td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
646 GFP_KERNEL);
647 if (!td->slots) {
648 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
649 hid_hw_stop(hdev);
650 ret = -ENOMEM;
651 goto fail;
652 }
653
eec29e3d
BT		 654 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
655
5519cab4
BT		 656 mt_set_input_mode(hdev);
657
658 return 0;
659
660fail:
661 kfree(td);
662 return ret;
663}
664
665#ifdef CONFIG_PM
666static int mt_reset_resume(struct hid_device *hdev)
667{
668 mt_set_input_mode(hdev);
669 return 0;
670}
671#endif
672
673static void mt_remove(struct hid_device *hdev)
674{
675 struct mt_device *td = hid_get_drvdata(hdev);
eec29e3d 676 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
5519cab4 677 hid_hw_stop(hdev);
9498f954 678 kfree(td->slots);
5519cab4
BT		 679 kfree(td);
680 hid_set_drvdata(hdev, NULL);
681}
682
683static const struct hid_device_id mt_devices[] = {
684
f786bba4
BT		 685 /* 3M panels */
686 { .driver_data = MT_CLS_3M,
687 HID_USB_DEVICE(USB_VENDOR_ID_3M,
688 USB_DEVICE_ID_3M1968) },
689 { .driver_data = MT_CLS_3M,
690 HID_USB_DEVICE(USB_VENDOR_ID_3M,
691 USB_DEVICE_ID_3M2256) },
c4fad877
BT		 692 { .driver_data = MT_CLS_3M,
693 HID_USB_DEVICE(USB_VENDOR_ID_3M,
694 USB_DEVICE_ID_3M3266) },
f786bba4 695
e6aac342
BT		 696 /* ActionStar panels */
697 { .driver_data = MT_CLS_DEFAULT,
698 HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
699 USB_DEVICE_ID_ACTIONSTAR_1011) },
700
b1057124
BT		 701 /* Atmel panels */
702 { .driver_data = MT_CLS_SERIAL,
703 HID_USB_DEVICE(USB_VENDOR_ID_ATMEL,
704 USB_DEVICE_ID_ATMEL_MULTITOUCH) },
705
a841b62c
BT		 706 /* Cando panels */
707 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
708 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
709 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
710 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
711 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
712 USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
713 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
714 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
715 USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
716 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
717 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
718 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
719
942fd422
AZ		 720 /* Chunghwa Telecom touch panels */
721 { .driver_data = MT_CLS_DEFAULT,
722 HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
723 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
724
79603dc9
BT		 725 /* CVTouch panels */
726 { .driver_data = MT_CLS_DEFAULT,
727 HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
728 USB_DEVICE_ID_CVTOUCH_SCREEN) },
729
a3b5e577
BT		 730 /* Cypress panel */
731 { .driver_data = MT_CLS_CYPRESS,
732 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
733 USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
734
22408283 735 /* eGalax devices (resistive) */
e36f690b 736 { .driver_data = MT_CLS_EGALAX,
22408283 737 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b
BT		 738 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
739 { .driver_data = MT_CLS_EGALAX,
22408283 740 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b 741 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
22408283
BT		 742
743 /* eGalax devices (capacitive) */
e36f690b 744 { .driver_data = MT_CLS_EGALAX,
22408283 745 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b
BT		 746 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
747 { .driver_data = MT_CLS_EGALAX,
22408283 748 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b
BT		 749 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
750 { .driver_data = MT_CLS_EGALAX,
22408283 751 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b 752 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
66f06127
BT		 753 { .driver_data = MT_CLS_EGALAX,
754 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
755 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
bb9ff210
MV		 756 { .driver_data = MT_CLS_EGALAX,
757 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
758 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1b723e8d 759 { .driver_data = MT_CLS_EGALAX_SERIAL,
1fd8f047 760 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b 761 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
22408283 762
c04abeef
BT		 763 /* Elo TouchSystems IntelliTouch Plus panel */
764 { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
765 HID_USB_DEVICE(USB_VENDOR_ID_ELO,
766 USB_DEVICE_ID_ELO_TS2515) },
767
5572da08 768 /* GeneralTouch panel */
1e9cf35b 769 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
5572da08
BT		 770 HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
771 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
772
ee0fbd14
BT		 773 /* GoodTouch panels */
774 { .driver_data = MT_CLS_DEFAULT,
775 HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
776 USB_DEVICE_ID_GOODTOUCH_000f) },
777
54580365
BT		 778 /* Hanvon panels */
779 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
780 HID_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
781 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
782
a062cc5a
SC		 783 /* Ideacom panel */
784 { .driver_data = MT_CLS_SERIAL,
785 HID_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
786 USB_DEVICE_ID_IDEACOM_IDC6650) },
787
4e61f0d7
AZ		 788 /* Ilitek dual touch panel */
789 { .driver_data = MT_CLS_DEFAULT,
790 HID_USB_DEVICE(USB_VENDOR_ID_ILITEK,
791 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
792
4dfcced8
BT		 793 /* IRTOUCH panels */
794 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
795 HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
796 USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
797
c50bb1a4
JB		 798 /* LG Display panels */
799 { .driver_data = MT_CLS_DEFAULT,
800 HID_USB_DEVICE(USB_VENDOR_ID_LG,
801 USB_DEVICE_ID_LG_MULTITOUCH) },
802
df167c4a
BT		 803 /* Lumio panels */
804 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
805 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
806 USB_DEVICE_ID_CRYSTALTOUCH) },
c3ead6de
BT		 807 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
808 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
809 USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
df167c4a 810
4a6ee685
BT		 811 /* MosArt panels */
812 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
813 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
814 USB_DEVICE_ID_ASUS_T91MT)},
815 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
816 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
817 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
818 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
819 HID_USB_DEVICE(USB_VENDOR_ID_TURBOX,
820 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
821
6ab3a9a6
JS		 822 /* PenMount panels */
823 { .driver_data = MT_CLS_CONFIDENCE,
824 HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
825 USB_DEVICE_ID_PENMOUNT_PCI) },
826
b7ea95ff
AT		 827 /* PixArt optical touch screen */
828 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
829 HID_USB_DEVICE(USB_VENDOR_ID_PIXART,
830 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
831 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
832 HID_USB_DEVICE(USB_VENDOR_ID_PIXART,
833 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
834 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
835 HID_USB_DEVICE(USB_VENDOR_ID_PIXART,
836 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
837
5519cab4 838 /* PixCir-based panels */
1e9cf35b 839 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
5519cab4
BT		 840 HID_USB_DEVICE(USB_VENDOR_ID_HANVON,
841 USB_DEVICE_ID_HANVON_MULTITOUCH) },
1e9cf35b 842 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
5519cab4
BT		 843 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
844 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
845
5e7ea11f
BT		 846 /* Quanta-based panels */
847 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
848 HID_USB_DEVICE(USB_VENDOR_ID_QUANTA,
849 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
850 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
851 HID_USB_DEVICE(USB_VENDOR_ID_QUANTA,
852 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
853 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
854 HID_USB_DEVICE(USB_VENDOR_ID_QUANTA,
855 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) },
856
043b403a 857 /* Stantum panels */
bf5af9b5 858 { .driver_data = MT_CLS_CONFIDENCE,
043b403a
BT		 859 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
860 USB_DEVICE_ID_MTP)},
bf5af9b5 861 { .driver_data = MT_CLS_CONFIDENCE,
85a60082 862 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
043b403a 863 USB_DEVICE_ID_MTP_STM)},
bf5af9b5 864 { .driver_data = MT_CLS_CONFIDENCE,
85a60082 865 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
043b403a
BT		 866 USB_DEVICE_ID_MTP_SITRONIX)},
867
5e74e56d
BT		 868 /* Touch International panels */
869 { .driver_data = MT_CLS_DEFAULT,
870 HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
871 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
872
617b64f9
BT		 873 /* Unitec panels */
874 { .driver_data = MT_CLS_DEFAULT,
875 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
876 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
877 { .driver_data = MT_CLS_DEFAULT,
878 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
879 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
bc8a2a9b 880 /* XAT */
881 { .driver_data = MT_CLS_DEFAULT,
882 HID_USB_DEVICE(USB_VENDOR_ID_XAT,
883 USB_DEVICE_ID_XAT_CSR) },
617b64f9 884
11576c61
MH		 885 /* Xiroku */
886 { .driver_data = MT_CLS_DEFAULT,
887 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
888 USB_DEVICE_ID_XIROKU_SPX) },
889 { .driver_data = MT_CLS_DEFAULT,
890 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
891 USB_DEVICE_ID_XIROKU_MPX) },
892 { .driver_data = MT_CLS_DEFAULT,
893 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
894 USB_DEVICE_ID_XIROKU_CSR) },
895 { .driver_data = MT_CLS_DEFAULT,
896 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
897 USB_DEVICE_ID_XIROKU_SPX1) },
898 { .driver_data = MT_CLS_DEFAULT,
899 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
900 USB_DEVICE_ID_XIROKU_MPX1) },
901 { .driver_data = MT_CLS_DEFAULT,
902 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
903 USB_DEVICE_ID_XIROKU_CSR1) },
904 { .driver_data = MT_CLS_DEFAULT,
905 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
906 USB_DEVICE_ID_XIROKU_SPX2) },
907 { .driver_data = MT_CLS_DEFAULT,
908 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
909 USB_DEVICE_ID_XIROKU_MPX2) },
910 { .driver_data = MT_CLS_DEFAULT,
911 HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
912 USB_DEVICE_ID_XIROKU_CSR2) },
913
5519cab4
BT		 914 { }
915};
916MODULE_DEVICE_TABLE(hid, mt_devices);
917
918static const struct hid_usage_id mt_grabbed_usages[] = {
919 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
920 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
921};
922
923static struct hid_driver mt_driver = {
924 .name = "hid-multitouch",
925 .id_table = mt_devices,
926 .probe = mt_probe,
927 .remove = mt_remove,
928 .input_mapping = mt_input_mapping,
929 .input_mapped = mt_input_mapped,
930 .feature_mapping = mt_feature_mapping,
931 .usage_table = mt_grabbed_usages,
932 .event = mt_event,
933#ifdef CONFIG_PM
934 .reset_resume = mt_reset_resume,
935#endif
936};
937
938static int __init mt_init(void)
939{
940 return hid_register_driver(&mt_driver);
941}
942
943static void __exit mt_exit(void)
944{
945 hid_unregister_driver(&mt_driver);
946}
947
948module_init(mt_init);
949module_exit(mt_exit);
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