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[linux-2.6.git] / drivers / hid / hid-multitouch.c
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  *
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  *
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  *
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
38 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
39 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
40 MODULE_DESCRIPTION("HID multitouch panels");
41 MODULE_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)
48 #define MT_QUIRK_CYPRESS                (1 << 2)
49 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER  (1 << 3)
50 #define MT_QUIRK_VALID_IS_INRANGE       (1 << 4)
51 #define MT_QUIRK_VALID_IS_CONFIDENCE    (1 << 5)
52 #define MT_QUIRK_EGALAX_XYZ_FIXUP       (1 << 6)
53 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE    (1 << 7)
54
55 struct 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
62 struct mt_device {
63         struct mt_slot curdata; /* placeholder of incoming data */
64         struct mt_class *mtclass;       /* our mt device class */
65         unsigned last_field_index;      /* last field index of the report */
66         unsigned last_slot_field;       /* the last field of a slot */
67         int last_mt_collection; /* last known mt-related collection */
68         __s8 inputmode;         /* InputMode HID feature, -1 if non-existent */
69         __u8 num_received;      /* how many contacts we received */
70         __u8 num_expected;      /* expected last contact index */
71         __u8 maxcontacts;
72         bool curvalid;          /* is the current contact valid? */
73         struct mt_slot *slots;
74 };
75
76 struct mt_class {
77         __s32 name;     /* MT_CLS */
78         __s32 quirks;
79         __s32 sn_move;  /* Signal/noise ratio for move events */
80         __s32 sn_width; /* Signal/noise ratio for width events */
81         __s32 sn_height;        /* Signal/noise ratio for height events */
82         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
83         __u8 maxcontacts;
84 };
85
86 /* classes of device behavior */
87 #define MT_CLS_DEFAULT                          0x0001
88
89 #define MT_CLS_CONFIDENCE                       0x0002
90 #define MT_CLS_CONFIDENCE_MINUS_ONE             0x0003
91 #define MT_CLS_DUAL_INRANGE_CONTACTID           0x0004
92 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       0x0005
93 #define MT_CLS_DUAL_NSMU_CONTACTID              0x0006
94
95 /* vendor specific classes */
96 #define MT_CLS_3M                               0x0101
97 #define MT_CLS_CYPRESS                          0x0102
98 #define MT_CLS_EGALAX                           0x0103
99
100 #define MT_DEFAULT_MAXCONTACT   10
101
102 /*
103  * these device-dependent functions determine what slot corresponds
104  * to a valid contact that was just read.
105  */
106
107 static int cypress_compute_slot(struct mt_device *td)
108 {
109         if (td->curdata.contactid != 0 || td->num_received == 0)
110                 return td->curdata.contactid;
111         else
112                 return -1;
113 }
114
115 static int find_slot_from_contactid(struct mt_device *td)
116 {
117         int i;
118         for (i = 0; i < td->maxcontacts; ++i) {
119                 if (td->slots[i].contactid == td->curdata.contactid &&
120                         td->slots[i].touch_state)
121                         return i;
122         }
123         for (i = 0; i < td->maxcontacts; ++i) {
124                 if (!td->slots[i].seen_in_this_frame &&
125                         !td->slots[i].touch_state)
126                         return i;
127         }
128         /* should not occurs. If this happens that means
129          * that the device sent more touches that it says
130          * in the report descriptor. It is ignored then. */
131         return -1;
132 }
133
134 struct mt_class mt_classes[] = {
135         { .name = MT_CLS_DEFAULT,
136                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
137         { .name = MT_CLS_CONFIDENCE,
138                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
139         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
140                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
141                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
142         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
143                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
144                         MT_QUIRK_SLOT_IS_CONTACTID,
145                 .maxcontacts = 2 },
146         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
147                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
148                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
149                 .maxcontacts = 2 },
150         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
151                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
152                         MT_QUIRK_SLOT_IS_CONTACTID,
153                 .maxcontacts = 2 },
154
155         /*
156          * vendor specific classes
157          */
158         { .name = MT_CLS_3M,
159                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
160                         MT_QUIRK_SLOT_IS_CONTACTID,
161                 .sn_move = 2048,
162                 .sn_width = 128,
163                 .sn_height = 128 },
164         { .name = MT_CLS_CYPRESS,
165                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
166                         MT_QUIRK_CYPRESS,
167                 .maxcontacts = 10 },
168         { .name = MT_CLS_EGALAX,
169                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
170                         MT_QUIRK_VALID_IS_INRANGE |
171                         MT_QUIRK_EGALAX_XYZ_FIXUP,
172                 .maxcontacts = 2,
173                 .sn_move = 4096,
174                 .sn_pressure = 32,
175         },
176
177         { }
178 };
179
180 static void mt_feature_mapping(struct hid_device *hdev,
181                 struct hid_field *field, struct hid_usage *usage)
182 {
183         struct mt_device *td = hid_get_drvdata(hdev);
184
185         switch (usage->hid) {
186         case HID_DG_INPUTMODE:
187                 td->inputmode = field->report->id;
188                 break;
189         case HID_DG_CONTACTMAX:
190                 td->maxcontacts = field->value[0];
191                 if (td->mtclass->maxcontacts)
192                         /* check if the maxcontacts is given by the class */
193                         td->maxcontacts = td->mtclass->maxcontacts;
194
195                 break;
196         }
197 }
198
199 static void set_abs(struct input_dev *input, unsigned int code,
200                 struct hid_field *field, int snratio)
201 {
202         int fmin = field->logical_minimum;
203         int fmax = field->logical_maximum;
204         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
205         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
206 }
207
208 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
209                 struct hid_field *field, struct hid_usage *usage,
210                 unsigned long **bit, int *max)
211 {
212         struct mt_device *td = hid_get_drvdata(hdev);
213         struct mt_class *cls = td->mtclass;
214         __s32 quirks = cls->quirks;
215
216         /* Only map fields from TouchScreen or TouchPad collections.
217          * We need to ignore fields that belong to other collections
218          * such as Mouse that might have the same GenericDesktop usages. */
219         if (field->application == HID_DG_TOUCHSCREEN)
220                 set_bit(INPUT_PROP_DIRECT, hi->input->propbit);
221         else if (field->application == HID_DG_TOUCHPAD)
222                 set_bit(INPUT_PROP_POINTER, hi->input->propbit);
223         else
224                 return 0;
225
226         switch (usage->hid & HID_USAGE_PAGE) {
227
228         case HID_UP_GENDESK:
229                 switch (usage->hid) {
230                 case HID_GD_X:
231                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
232                                 field->logical_maximum = 32760;
233                         hid_map_usage(hi, usage, bit, max,
234                                         EV_ABS, ABS_MT_POSITION_X);
235                         set_abs(hi->input, ABS_MT_POSITION_X, field,
236                                 cls->sn_move);
237                         /* touchscreen emulation */
238                         set_abs(hi->input, ABS_X, field, cls->sn_move);
239                         if (td->last_mt_collection == usage->collection_index) {
240                                 td->last_slot_field = usage->hid;
241                                 td->last_field_index = field->index;
242                         }
243                         return 1;
244                 case HID_GD_Y:
245                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
246                                 field->logical_maximum = 32760;
247                         hid_map_usage(hi, usage, bit, max,
248                                         EV_ABS, ABS_MT_POSITION_Y);
249                         set_abs(hi->input, ABS_MT_POSITION_Y, field,
250                                 cls->sn_move);
251                         /* touchscreen emulation */
252                         set_abs(hi->input, ABS_Y, field, cls->sn_move);
253                         if (td->last_mt_collection == usage->collection_index) {
254                                 td->last_slot_field = usage->hid;
255                                 td->last_field_index = field->index;
256                         }
257                         return 1;
258                 }
259                 return 0;
260
261         case HID_UP_DIGITIZER:
262                 switch (usage->hid) {
263                 case HID_DG_INRANGE:
264                         if (td->last_mt_collection == usage->collection_index) {
265                                 td->last_slot_field = usage->hid;
266                                 td->last_field_index = field->index;
267                         }
268                         return 1;
269                 case HID_DG_CONFIDENCE:
270                         if (td->last_mt_collection == usage->collection_index) {
271                                 td->last_slot_field = usage->hid;
272                                 td->last_field_index = field->index;
273                         }
274                         return 1;
275                 case HID_DG_TIPSWITCH:
276                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
277                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
278                         if (td->last_mt_collection == usage->collection_index) {
279                                 td->last_slot_field = usage->hid;
280                                 td->last_field_index = field->index;
281                         }
282                         return 1;
283                 case HID_DG_CONTACTID:
284                         if (!td->maxcontacts)
285                                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
286                         input_mt_init_slots(hi->input, td->maxcontacts);
287                         td->last_slot_field = usage->hid;
288                         td->last_field_index = field->index;
289                         td->last_mt_collection = usage->collection_index;
290                         return 1;
291                 case HID_DG_WIDTH:
292                         hid_map_usage(hi, usage, bit, max,
293                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
294                         set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
295                                 cls->sn_width);
296                         if (td->last_mt_collection == usage->collection_index) {
297                                 td->last_slot_field = usage->hid;
298                                 td->last_field_index = field->index;
299                         }
300                         return 1;
301                 case HID_DG_HEIGHT:
302                         hid_map_usage(hi, usage, bit, max,
303                                         EV_ABS, ABS_MT_TOUCH_MINOR);
304                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
305                                 cls->sn_height);
306                         input_set_abs_params(hi->input,
307                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
308                         if (td->last_mt_collection == usage->collection_index) {
309                                 td->last_slot_field = usage->hid;
310                                 td->last_field_index = field->index;
311                         }
312                         return 1;
313                 case HID_DG_TIPPRESSURE:
314                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
315                                 field->logical_minimum = 0;
316                         hid_map_usage(hi, usage, bit, max,
317                                         EV_ABS, ABS_MT_PRESSURE);
318                         set_abs(hi->input, ABS_MT_PRESSURE, field,
319                                 cls->sn_pressure);
320                         /* touchscreen emulation */
321                         set_abs(hi->input, ABS_PRESSURE, field,
322                                 cls->sn_pressure);
323                         if (td->last_mt_collection == usage->collection_index) {
324                                 td->last_slot_field = usage->hid;
325                                 td->last_field_index = field->index;
326                         }
327                         return 1;
328                 case HID_DG_CONTACTCOUNT:
329                         if (td->last_mt_collection == usage->collection_index)
330                                 td->last_field_index = field->index;
331                         return 1;
332                 case HID_DG_CONTACTMAX:
333                         /* we don't set td->last_slot_field as contactcount and
334                          * contact max are global to the report */
335                         if (td->last_mt_collection == usage->collection_index)
336                                 td->last_field_index = field->index;
337                         return -1;
338                 }
339                 /* let hid-input decide for the others */
340                 return 0;
341
342         case 0xff000000:
343                 /* we do not want to map these: no input-oriented meaning */
344                 return -1;
345         }
346
347         return 0;
348 }
349
350 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
351                 struct hid_field *field, struct hid_usage *usage,
352                 unsigned long **bit, int *max)
353 {
354         if (usage->type == EV_KEY || usage->type == EV_ABS)
355                 set_bit(usage->type, hi->input->evbit);
356
357         return -1;
358 }
359
360 static int mt_compute_slot(struct mt_device *td)
361 {
362         __s32 quirks = td->mtclass->quirks;
363
364         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
365                 return td->curdata.contactid;
366
367         if (quirks & MT_QUIRK_CYPRESS)
368                 return cypress_compute_slot(td);
369
370         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
371                 return td->num_received;
372
373         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
374                 return td->curdata.contactid - 1;
375
376         return find_slot_from_contactid(td);
377 }
378
379 /*
380  * this function is called when a whole contact has been processed,
381  * so that it can assign it to a slot and store the data there
382  */
383 static void mt_complete_slot(struct mt_device *td)
384 {
385         td->curdata.seen_in_this_frame = true;
386         if (td->curvalid) {
387                 int slotnum = mt_compute_slot(td);
388
389                 if (slotnum >= 0 && slotnum < td->maxcontacts)
390                         td->slots[slotnum] = td->curdata;
391         }
392         td->num_received++;
393 }
394
395
396 /*
397  * this function is called when a whole packet has been received and processed,
398  * so that it can decide what to send to the input layer.
399  */
400 static void mt_emit_event(struct mt_device *td, struct input_dev *input)
401 {
402         int i;
403
404         for (i = 0; i < td->maxcontacts; ++i) {
405                 struct mt_slot *s = &(td->slots[i]);
406                 if ((td->mtclass->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
407                         !s->seen_in_this_frame) {
408                         s->touch_state = false;
409                 }
410
411                 input_mt_slot(input, i);
412                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
413                         s->touch_state);
414                 if (s->touch_state) {
415                         /* this finger is on the screen */
416                         int wide = (s->w > s->h);
417                         /* divided by two to match visual scale of touch */
418                         int major = max(s->w, s->h) >> 1;
419                         int minor = min(s->w, s->h) >> 1;
420
421                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
422                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
423                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
424                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
425                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
426                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
427                 }
428                 s->seen_in_this_frame = false;
429
430         }
431
432         input_mt_report_pointer_emulation(input, true);
433         input_sync(input);
434         td->num_received = 0;
435 }
436
437
438
439 static int mt_event(struct hid_device *hid, struct hid_field *field,
440                                 struct hid_usage *usage, __s32 value)
441 {
442         struct mt_device *td = hid_get_drvdata(hid);
443         __s32 quirks = td->mtclass->quirks;
444
445         if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
446                 switch (usage->hid) {
447                 case HID_DG_INRANGE:
448                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
449                                 td->curvalid = value;
450                         break;
451                 case HID_DG_TIPSWITCH:
452                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
453                                 td->curvalid = value;
454                         td->curdata.touch_state = value;
455                         break;
456                 case HID_DG_CONFIDENCE:
457                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
458                                 td->curvalid = value;
459                         break;
460                 case HID_DG_CONTACTID:
461                         td->curdata.contactid = value;
462                         break;
463                 case HID_DG_TIPPRESSURE:
464                         td->curdata.p = value;
465                         break;
466                 case HID_GD_X:
467                         td->curdata.x = value;
468                         break;
469                 case HID_GD_Y:
470                         td->curdata.y = value;
471                         break;
472                 case HID_DG_WIDTH:
473                         td->curdata.w = value;
474                         break;
475                 case HID_DG_HEIGHT:
476                         td->curdata.h = value;
477                         break;
478                 case HID_DG_CONTACTCOUNT:
479                         /*
480                          * Includes multi-packet support where subsequent
481                          * packets are sent with zero contactcount.
482                          */
483                         if (value)
484                                 td->num_expected = value;
485                         break;
486
487                 default:
488                         /* fallback to the generic hidinput handling */
489                         return 0;
490                 }
491
492                 if (usage->hid == td->last_slot_field) {
493                         mt_complete_slot(td);
494                 }
495
496                 if (field->index == td->last_field_index
497                         && td->num_received >= td->num_expected)
498                         mt_emit_event(td, field->hidinput->input);
499
500         }
501
502         /* we have handled the hidinput part, now remains hiddev */
503         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
504                 hid->hiddev_hid_event(hid, field, usage, value);
505
506         return 1;
507 }
508
509 static void mt_set_input_mode(struct hid_device *hdev)
510 {
511         struct mt_device *td = hid_get_drvdata(hdev);
512         struct hid_report *r;
513         struct hid_report_enum *re;
514
515         if (td->inputmode < 0)
516                 return;
517
518         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
519         r = re->report_id_hash[td->inputmode];
520         if (r) {
521                 r->field[0]->value[0] = 0x02;
522                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
523         }
524 }
525
526 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
527 {
528         int ret, i;
529         struct mt_device *td;
530         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
531
532         for (i = 0; mt_classes[i].name ; i++) {
533                 if (id->driver_data == mt_classes[i].name) {
534                         mtclass = &(mt_classes[i]);
535                         break;
536                 }
537         }
538
539         /* This allows the driver to correctly support devices
540          * that emit events over several HID messages.
541          */
542         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
543
544         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
545         if (!td) {
546                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
547                 return -ENOMEM;
548         }
549         td->mtclass = mtclass;
550         td->inputmode = -1;
551         td->last_mt_collection = -1;
552         hid_set_drvdata(hdev, td);
553
554         ret = hid_parse(hdev);
555         if (ret != 0)
556                 goto fail;
557
558         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
559         if (ret)
560                 goto fail;
561
562         td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
563                                 GFP_KERNEL);
564         if (!td->slots) {
565                 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
566                 hid_hw_stop(hdev);
567                 ret = -ENOMEM;
568                 goto fail;
569         }
570
571         mt_set_input_mode(hdev);
572
573         return 0;
574
575 fail:
576         kfree(td);
577         return ret;
578 }
579
580 #ifdef CONFIG_PM
581 static int mt_reset_resume(struct hid_device *hdev)
582 {
583         mt_set_input_mode(hdev);
584         return 0;
585 }
586 #endif
587
588 static void mt_remove(struct hid_device *hdev)
589 {
590         struct mt_device *td = hid_get_drvdata(hdev);
591         hid_hw_stop(hdev);
592         kfree(td->slots);
593         kfree(td);
594         hid_set_drvdata(hdev, NULL);
595 }
596
597 static const struct hid_device_id mt_devices[] = {
598
599         /* 3M panels */
600         { .driver_data = MT_CLS_3M,
601                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
602                         USB_DEVICE_ID_3M1968) },
603         { .driver_data = MT_CLS_3M,
604                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
605                         USB_DEVICE_ID_3M2256) },
606
607         /* ActionStar panels */
608         { .driver_data = MT_CLS_DEFAULT,
609                 HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
610                         USB_DEVICE_ID_ACTIONSTAR_1011) },
611
612         /* Cando panels */
613         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
614                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
615                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
616         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
617                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
618                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
619         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
620                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
621                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
622         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
623                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
624                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
625
626         /* Chunghwa Telecom touch panels */
627         {  .driver_data = MT_CLS_DEFAULT,
628                 HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
629                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
630
631         /* CVTouch panels */
632         { .driver_data = MT_CLS_DEFAULT,
633                 HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
634                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
635
636         /* Cypress panel */
637         { .driver_data = MT_CLS_CYPRESS,
638                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
639                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
640
641         /* eGalax devices (resistive) */
642         {  .driver_data = MT_CLS_EGALAX,
643                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
644                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
645         {  .driver_data = MT_CLS_EGALAX,
646                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
647                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
648
649         /* eGalax devices (capacitive) */
650         {  .driver_data = MT_CLS_EGALAX,
651                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
652                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
653         {  .driver_data = MT_CLS_EGALAX,
654                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
655                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
656         {  .driver_data = MT_CLS_EGALAX,
657                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
658                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
659
660         /* Elo TouchSystems IntelliTouch Plus panel */
661         { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
662                 HID_USB_DEVICE(USB_VENDOR_ID_ELO,
663                         USB_DEVICE_ID_ELO_TS2515) },
664
665         /* GeneralTouch panel */
666         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
667                 HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
668                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
669
670         /* GoodTouch panels */
671         { .driver_data = MT_CLS_DEFAULT,
672                 HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
673                         USB_DEVICE_ID_GOODTOUCH_000f) },
674
675         /* Ilitek dual touch panel */
676         {  .driver_data = MT_CLS_DEFAULT,
677                 HID_USB_DEVICE(USB_VENDOR_ID_ILITEK,
678                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
679
680         /* IRTOUCH panels */
681         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
682                 HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
683                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
684
685         /* LG Display panels */
686         { .driver_data = MT_CLS_DEFAULT,
687                 HID_USB_DEVICE(USB_VENDOR_ID_LG,
688                         USB_DEVICE_ID_LG_MULTITOUCH) },
689
690         /* Lumio panels */
691         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
692                 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
693                         USB_DEVICE_ID_CRYSTALTOUCH) },
694         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
695                 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
696                         USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
697
698         /* MosArt panels */
699         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
700                 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
701                         USB_DEVICE_ID_ASUS_T91MT)},
702         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
703                 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
704                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
705         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
706                 HID_USB_DEVICE(USB_VENDOR_ID_TURBOX,
707                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
708
709         /* PenMount panels */
710         { .driver_data = MT_CLS_CONFIDENCE,
711                 HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
712                         USB_DEVICE_ID_PENMOUNT_PCI) },
713
714         /* PixCir-based panels */
715         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
716                 HID_USB_DEVICE(USB_VENDOR_ID_HANVON,
717                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
718         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
719                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
720                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
721
722         /* Stantum panels */
723         { .driver_data = MT_CLS_CONFIDENCE,
724                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
725                         USB_DEVICE_ID_MTP)},
726         { .driver_data = MT_CLS_CONFIDENCE,
727                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
728                         USB_DEVICE_ID_MTP_STM)},
729         { .driver_data = MT_CLS_CONFIDENCE,
730                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
731                         USB_DEVICE_ID_MTP_SITRONIX)},
732
733         /* Touch International panels */
734         { .driver_data = MT_CLS_DEFAULT,
735                 HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
736                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
737
738         /* Unitec panels */
739         { .driver_data = MT_CLS_DEFAULT,
740                 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
741                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
742         { .driver_data = MT_CLS_DEFAULT,
743                 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
744                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
745         /* XAT */
746         { .driver_data = MT_CLS_DEFAULT,
747                 HID_USB_DEVICE(USB_VENDOR_ID_XAT,
748                         USB_DEVICE_ID_XAT_CSR) },
749
750         { }
751 };
752 MODULE_DEVICE_TABLE(hid, mt_devices);
753
754 static const struct hid_usage_id mt_grabbed_usages[] = {
755         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
756         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
757 };
758
759 static struct hid_driver mt_driver = {
760         .name = "hid-multitouch",
761         .id_table = mt_devices,
762         .probe = mt_probe,
763         .remove = mt_remove,
764         .input_mapping = mt_input_mapping,
765         .input_mapped = mt_input_mapped,
766         .feature_mapping = mt_feature_mapping,
767         .usage_table = mt_grabbed_usages,
768         .event = mt_event,
769 #ifdef CONFIG_PM
770         .reset_resume = mt_reset_resume,
771 #endif
772 };
773
774 static int __init mt_init(void)
775 {
776         return hid_register_driver(&mt_driver);
777 }
778
779 static void __exit mt_exit(void)
780 {
781         hid_unregister_driver(&mt_driver);
782 }
783
784 module_init(mt_init);
785 module_exit(mt_exit);