HID: hid-multitouch: migrate 3M PCT touch screens to hid-multitouch
[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
54 struct mt_slot {
55         __s32 x, y, p, w, h;
56         __s32 contactid;        /* the device ContactID assigned to this slot */
57         bool touch_state;       /* is the touch valid? */
58         bool seen_in_this_frame;/* has this slot been updated */
59 };
60
61 struct mt_device {
62         struct mt_slot curdata; /* placeholder of incoming data */
63         struct mt_class *mtclass;       /* our mt device class */
64         unsigned last_field_index;      /* last field index of the report */
65         unsigned last_slot_field;       /* the last field of a slot */
66         __s8 inputmode;         /* InputMode HID feature, -1 if non-existent */
67         __u8 num_received;      /* how many contacts we received */
68         __u8 num_expected;      /* expected last contact index */
69         __u8 maxcontacts;
70         bool curvalid;          /* is the current contact valid? */
71         struct mt_slot *slots;
72 };
73
74 struct mt_class {
75         __s32 name;     /* MT_CLS */
76         __s32 quirks;
77         __s32 sn_move;  /* Signal/noise ratio for move events */
78         __s32 sn_width; /* Signal/noise ratio for width events */
79         __s32 sn_height;        /* Signal/noise ratio for height events */
80         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
81         __u8 maxcontacts;
82 };
83
84 /* classes of device behavior */
85 #define MT_CLS_DEFAULT                          1
86 #define MT_CLS_DUAL_INRANGE_CONTACTID           2
87 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       3
88 #define MT_CLS_CYPRESS                          4
89 #define MT_CLS_EGALAX                           5
90 #define MT_CLS_STANTUM                          6
91 #define MT_CLS_3M                               7
92
93 #define MT_DEFAULT_MAXCONTACT   10
94
95 /*
96  * these device-dependent functions determine what slot corresponds
97  * to a valid contact that was just read.
98  */
99
100 static int cypress_compute_slot(struct mt_device *td)
101 {
102         if (td->curdata.contactid != 0 || td->num_received == 0)
103                 return td->curdata.contactid;
104         else
105                 return -1;
106 }
107
108 static int find_slot_from_contactid(struct mt_device *td)
109 {
110         int i;
111         for (i = 0; i < td->maxcontacts; ++i) {
112                 if (td->slots[i].contactid == td->curdata.contactid &&
113                         td->slots[i].touch_state)
114                         return i;
115         }
116         for (i = 0; i < td->maxcontacts; ++i) {
117                 if (!td->slots[i].seen_in_this_frame &&
118                         !td->slots[i].touch_state)
119                         return i;
120         }
121         /* should not occurs. If this happens that means
122          * that the device sent more touches that it says
123          * in the report descriptor. It is ignored then. */
124         return -1;
125 }
126
127 struct mt_class mt_classes[] = {
128         { .name = MT_CLS_DEFAULT,
129                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
130         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
131                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
132                         MT_QUIRK_SLOT_IS_CONTACTID,
133                 .maxcontacts = 2 },
134         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
135                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
136                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
137                 .maxcontacts = 2 },
138         { .name = MT_CLS_CYPRESS,
139                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
140                         MT_QUIRK_CYPRESS,
141                 .maxcontacts = 10 },
142
143         { .name = MT_CLS_EGALAX,
144                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
145                         MT_QUIRK_VALID_IS_INRANGE |
146                         MT_QUIRK_EGALAX_XYZ_FIXUP,
147                 .maxcontacts = 2,
148                 .sn_move = 4096,
149                 .sn_pressure = 32,
150         },
151         { .name = MT_CLS_STANTUM,
152                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
153         { .name = MT_CLS_3M,
154                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
155                         MT_QUIRK_SLOT_IS_CONTACTID,
156                 .sn_move = 2048,
157                 .sn_width = 128,
158                 .sn_height = 128 },
159
160         { }
161 };
162
163 static void mt_feature_mapping(struct hid_device *hdev,
164                 struct hid_field *field, struct hid_usage *usage)
165 {
166         struct mt_device *td = hid_get_drvdata(hdev);
167
168         switch (usage->hid) {
169         case HID_DG_INPUTMODE:
170                 td->inputmode = field->report->id;
171                 break;
172         case HID_DG_CONTACTMAX:
173                 td->maxcontacts = field->value[0];
174                 if (td->mtclass->maxcontacts)
175                         /* check if the maxcontacts is given by the class */
176                         td->maxcontacts = td->mtclass->maxcontacts;
177
178                 break;
179         }
180 }
181
182 static void set_abs(struct input_dev *input, unsigned int code,
183                 struct hid_field *field, int snratio)
184 {
185         int fmin = field->logical_minimum;
186         int fmax = field->logical_maximum;
187         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
188         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
189 }
190
191 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
192                 struct hid_field *field, struct hid_usage *usage,
193                 unsigned long **bit, int *max)
194 {
195         struct mt_device *td = hid_get_drvdata(hdev);
196         struct mt_class *cls = td->mtclass;
197         __s32 quirks = cls->quirks;
198
199         switch (usage->hid & HID_USAGE_PAGE) {
200
201         case HID_UP_GENDESK:
202                 switch (usage->hid) {
203                 case HID_GD_X:
204                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
205                                 field->logical_maximum = 32760;
206                         hid_map_usage(hi, usage, bit, max,
207                                         EV_ABS, ABS_MT_POSITION_X);
208                         set_abs(hi->input, ABS_MT_POSITION_X, field,
209                                 cls->sn_move);
210                         /* touchscreen emulation */
211                         set_abs(hi->input, ABS_X, field, cls->sn_move);
212                         td->last_slot_field = usage->hid;
213                         return 1;
214                 case HID_GD_Y:
215                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
216                                 field->logical_maximum = 32760;
217                         hid_map_usage(hi, usage, bit, max,
218                                         EV_ABS, ABS_MT_POSITION_Y);
219                         set_abs(hi->input, ABS_MT_POSITION_Y, field,
220                                 cls->sn_move);
221                         /* touchscreen emulation */
222                         set_abs(hi->input, ABS_Y, field, cls->sn_move);
223                         td->last_slot_field = usage->hid;
224                         return 1;
225                 }
226                 return 0;
227
228         case HID_UP_DIGITIZER:
229                 switch (usage->hid) {
230                 case HID_DG_INRANGE:
231                         td->last_slot_field = usage->hid;
232                         return 1;
233                 case HID_DG_CONFIDENCE:
234                         td->last_slot_field = usage->hid;
235                         return 1;
236                 case HID_DG_TIPSWITCH:
237                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
238                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
239                         td->last_slot_field = usage->hid;
240                         return 1;
241                 case HID_DG_CONTACTID:
242                         input_mt_init_slots(hi->input, td->maxcontacts);
243                         td->last_slot_field = usage->hid;
244                         return 1;
245                 case HID_DG_WIDTH:
246                         hid_map_usage(hi, usage, bit, max,
247                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
248                         set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
249                                 cls->sn_width);
250                         td->last_slot_field = usage->hid;
251                         return 1;
252                 case HID_DG_HEIGHT:
253                         hid_map_usage(hi, usage, bit, max,
254                                         EV_ABS, ABS_MT_TOUCH_MINOR);
255                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
256                                 cls->sn_height);
257                         input_set_abs_params(hi->input,
258                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
259                         td->last_slot_field = usage->hid;
260                         return 1;
261                 case HID_DG_TIPPRESSURE:
262                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
263                                 field->logical_minimum = 0;
264                         hid_map_usage(hi, usage, bit, max,
265                                         EV_ABS, ABS_MT_PRESSURE);
266                         set_abs(hi->input, ABS_MT_PRESSURE, field,
267                                 cls->sn_pressure);
268                         /* touchscreen emulation */
269                         set_abs(hi->input, ABS_PRESSURE, field,
270                                 cls->sn_pressure);
271                         td->last_slot_field = usage->hid;
272                         return 1;
273                 case HID_DG_CONTACTCOUNT:
274                         td->last_field_index = field->report->maxfield - 1;
275                         return 1;
276                 case HID_DG_CONTACTMAX:
277                         /* we don't set td->last_slot_field as contactcount and
278                          * contact max are global to the report */
279                         return -1;
280                 }
281                 /* let hid-input decide for the others */
282                 return 0;
283
284         case 0xff000000:
285                 /* we do not want to map these: no input-oriented meaning */
286                 return -1;
287         }
288
289         return 0;
290 }
291
292 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
293                 struct hid_field *field, struct hid_usage *usage,
294                 unsigned long **bit, int *max)
295 {
296         if (usage->type == EV_KEY || usage->type == EV_ABS)
297                 set_bit(usage->type, hi->input->evbit);
298
299         return -1;
300 }
301
302 static int mt_compute_slot(struct mt_device *td)
303 {
304         __s32 quirks = td->mtclass->quirks;
305
306         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
307                 return td->curdata.contactid;
308
309         if (quirks & MT_QUIRK_CYPRESS)
310                 return cypress_compute_slot(td);
311
312         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
313                 return td->num_received;
314
315         return find_slot_from_contactid(td);
316 }
317
318 /*
319  * this function is called when a whole contact has been processed,
320  * so that it can assign it to a slot and store the data there
321  */
322 static void mt_complete_slot(struct mt_device *td)
323 {
324         td->curdata.seen_in_this_frame = true;
325         if (td->curvalid) {
326                 int slotnum = mt_compute_slot(td);
327
328                 if (slotnum >= 0 && slotnum < td->maxcontacts)
329                         td->slots[slotnum] = td->curdata;
330         }
331         td->num_received++;
332 }
333
334
335 /*
336  * this function is called when a whole packet has been received and processed,
337  * so that it can decide what to send to the input layer.
338  */
339 static void mt_emit_event(struct mt_device *td, struct input_dev *input)
340 {
341         int i;
342
343         for (i = 0; i < td->maxcontacts; ++i) {
344                 struct mt_slot *s = &(td->slots[i]);
345                 if ((td->mtclass->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
346                         !s->seen_in_this_frame) {
347                         s->touch_state = false;
348                 }
349
350                 input_mt_slot(input, i);
351                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
352                         s->touch_state);
353                 if (s->touch_state) {
354                         /* this finger is on the screen */
355                         int wide = (s->w > s->h);
356                         /* divided by two to match visual scale of touch */
357                         int major = max(s->w, s->h) >> 1;
358                         int minor = min(s->w, s->h) >> 1;
359
360                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
361                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
362                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
363                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
364                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
365                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
366                 }
367                 s->seen_in_this_frame = false;
368
369         }
370
371         input_mt_report_pointer_emulation(input, true);
372         input_sync(input);
373         td->num_received = 0;
374 }
375
376
377
378 static int mt_event(struct hid_device *hid, struct hid_field *field,
379                                 struct hid_usage *usage, __s32 value)
380 {
381         struct mt_device *td = hid_get_drvdata(hid);
382         __s32 quirks = td->mtclass->quirks;
383
384         if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
385                 switch (usage->hid) {
386                 case HID_DG_INRANGE:
387                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
388                                 td->curvalid = value;
389                         break;
390                 case HID_DG_TIPSWITCH:
391                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
392                                 td->curvalid = value;
393                         td->curdata.touch_state = value;
394                         break;
395                 case HID_DG_CONFIDENCE:
396                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
397                                 td->curvalid = value;
398                         break;
399                 case HID_DG_CONTACTID:
400                         td->curdata.contactid = value;
401                         break;
402                 case HID_DG_TIPPRESSURE:
403                         td->curdata.p = value;
404                         break;
405                 case HID_GD_X:
406                         td->curdata.x = value;
407                         break;
408                 case HID_GD_Y:
409                         td->curdata.y = value;
410                         break;
411                 case HID_DG_WIDTH:
412                         td->curdata.w = value;
413                         break;
414                 case HID_DG_HEIGHT:
415                         td->curdata.h = value;
416                         break;
417                 case HID_DG_CONTACTCOUNT:
418                         /*
419                          * Includes multi-packet support where subsequent
420                          * packets are sent with zero contactcount.
421                          */
422                         if (value)
423                                 td->num_expected = value;
424                         break;
425
426                 default:
427                         if (td->last_field_index
428                                 && field->index == td->last_field_index)
429                                 /* we reach here when the last field in the
430                                  * report is not related to multitouch.
431                                  * This is not good. As a temporary solution,
432                                  * we trigger our mt event completion and
433                                  * ignore the field.
434                                  */
435                                 break;
436                         /* fallback to the generic hidinput handling */
437                         return 0;
438                 }
439
440                 if (usage->hid == td->last_slot_field) {
441                         mt_complete_slot(td);
442                         if (!td->last_field_index)
443                                 mt_emit_event(td, field->hidinput->input);
444                 }
445
446                 if (field->index == td->last_field_index
447                         && td->num_received >= td->num_expected)
448                         mt_emit_event(td, field->hidinput->input);
449
450         }
451
452         /* we have handled the hidinput part, now remains hiddev */
453         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
454                 hid->hiddev_hid_event(hid, field, usage, value);
455
456         return 1;
457 }
458
459 static void mt_set_input_mode(struct hid_device *hdev)
460 {
461         struct mt_device *td = hid_get_drvdata(hdev);
462         struct hid_report *r;
463         struct hid_report_enum *re;
464
465         if (td->inputmode < 0)
466                 return;
467
468         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
469         r = re->report_id_hash[td->inputmode];
470         if (r) {
471                 r->field[0]->value[0] = 0x02;
472                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
473         }
474 }
475
476 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
477 {
478         int ret, i;
479         struct mt_device *td;
480         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
481
482         for (i = 0; mt_classes[i].name ; i++) {
483                 if (id->driver_data == mt_classes[i].name) {
484                         mtclass = &(mt_classes[i]);
485                         break;
486                 }
487         }
488
489         /* This allows the driver to correctly support devices
490          * that emit events over several HID messages.
491          */
492         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
493
494         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
495         if (!td) {
496                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
497                 return -ENOMEM;
498         }
499         td->mtclass = mtclass;
500         td->inputmode = -1;
501         hid_set_drvdata(hdev, td);
502
503         ret = hid_parse(hdev);
504         if (ret != 0)
505                 goto fail;
506
507         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
508         if (ret)
509                 goto fail;
510
511         if (!td->maxcontacts)
512                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
513
514         td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
515                                 GFP_KERNEL);
516         if (!td->slots) {
517                 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
518                 hid_hw_stop(hdev);
519                 ret = -ENOMEM;
520                 goto fail;
521         }
522
523         mt_set_input_mode(hdev);
524
525         return 0;
526
527 fail:
528         kfree(td);
529         return ret;
530 }
531
532 #ifdef CONFIG_PM
533 static int mt_reset_resume(struct hid_device *hdev)
534 {
535         mt_set_input_mode(hdev);
536         return 0;
537 }
538 #endif
539
540 static void mt_remove(struct hid_device *hdev)
541 {
542         struct mt_device *td = hid_get_drvdata(hdev);
543         hid_hw_stop(hdev);
544         kfree(td->slots);
545         kfree(td);
546         hid_set_drvdata(hdev, NULL);
547 }
548
549 static const struct hid_device_id mt_devices[] = {
550
551         /* 3M panels */
552         { .driver_data = MT_CLS_3M,
553                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
554                         USB_DEVICE_ID_3M1968) },
555         { .driver_data = MT_CLS_3M,
556                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
557                         USB_DEVICE_ID_3M2256) },
558
559         /* Cando panels */
560         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
561                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
562                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
563         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
564                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
565                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
566         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
567                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
568                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
569         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
570                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
571                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
572
573         /* Cypress panel */
574         { .driver_data = MT_CLS_CYPRESS,
575                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
576                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
577
578         /* GeneralTouch panel */
579         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
580                 HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
581                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
582
583         /* IRTOUCH panels */
584         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
585                 HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
586                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
587
588         /* PixCir-based panels */
589         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
590                 HID_USB_DEVICE(USB_VENDOR_ID_HANVON,
591                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
592         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
593                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
594                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
595
596         /* Resistive eGalax devices */
597         {  .driver_data = MT_CLS_EGALAX,
598                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
599                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
600         {  .driver_data = MT_CLS_EGALAX,
601                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
602                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
603
604         /* Capacitive eGalax devices */
605         {  .driver_data = MT_CLS_EGALAX,
606                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
607                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
608         {  .driver_data = MT_CLS_EGALAX,
609                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
610                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
611         {  .driver_data = MT_CLS_EGALAX,
612                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
613                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
614
615         /* Stantum panels */
616         { .driver_data = MT_CLS_STANTUM,
617                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
618                         USB_DEVICE_ID_MTP)},
619         { .driver_data = MT_CLS_STANTUM,
620                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
621                         USB_DEVICE_ID_MTP_STM)},
622         { .driver_data = MT_CLS_STANTUM,
623                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
624                         USB_DEVICE_ID_MTP_SITRONIX)},
625
626         { }
627 };
628 MODULE_DEVICE_TABLE(hid, mt_devices);
629
630 static const struct hid_usage_id mt_grabbed_usages[] = {
631         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
632         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
633 };
634
635 static struct hid_driver mt_driver = {
636         .name = "hid-multitouch",
637         .id_table = mt_devices,
638         .probe = mt_probe,
639         .remove = mt_remove,
640         .input_mapping = mt_input_mapping,
641         .input_mapped = mt_input_mapped,
642         .feature_mapping = mt_feature_mapping,
643         .usage_table = mt_grabbed_usages,
644         .event = mt_event,
645 #ifdef CONFIG_PM
646         .reset_resume = mt_reset_resume,
647 #endif
648 };
649
650 static int __init mt_init(void)
651 {
652         return hid_register_driver(&mt_driver);
653 }
654
655 static void __exit mt_exit(void)
656 {
657         hid_unregister_driver(&mt_driver);
658 }
659
660 module_init(mt_init);
661 module_exit(mt_exit);