6005e7888b14ebcfd7d30769ec3e04b57051745f
[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                         td->last_field_index = field->index;
214                         return 1;
215                 case HID_GD_Y:
216                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
217                                 field->logical_maximum = 32760;
218                         hid_map_usage(hi, usage, bit, max,
219                                         EV_ABS, ABS_MT_POSITION_Y);
220                         set_abs(hi->input, ABS_MT_POSITION_Y, field,
221                                 cls->sn_move);
222                         /* touchscreen emulation */
223                         set_abs(hi->input, ABS_Y, field, cls->sn_move);
224                         td->last_slot_field = usage->hid;
225                         td->last_field_index = field->index;
226                         return 1;
227                 }
228                 return 0;
229
230         case HID_UP_DIGITIZER:
231                 switch (usage->hid) {
232                 case HID_DG_INRANGE:
233                         td->last_slot_field = usage->hid;
234                         td->last_field_index = field->index;
235                         return 1;
236                 case HID_DG_CONFIDENCE:
237                         td->last_slot_field = usage->hid;
238                         td->last_field_index = field->index;
239                         return 1;
240                 case HID_DG_TIPSWITCH:
241                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
242                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
243                         td->last_slot_field = usage->hid;
244                         td->last_field_index = field->index;
245                         return 1;
246                 case HID_DG_CONTACTID:
247                         input_mt_init_slots(hi->input, td->maxcontacts);
248                         td->last_slot_field = usage->hid;
249                         td->last_field_index = field->index;
250                         return 1;
251                 case HID_DG_WIDTH:
252                         hid_map_usage(hi, usage, bit, max,
253                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
254                         set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
255                                 cls->sn_width);
256                         td->last_slot_field = usage->hid;
257                         td->last_field_index = field->index;
258                         return 1;
259                 case HID_DG_HEIGHT:
260                         hid_map_usage(hi, usage, bit, max,
261                                         EV_ABS, ABS_MT_TOUCH_MINOR);
262                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
263                                 cls->sn_height);
264                         input_set_abs_params(hi->input,
265                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
266                         td->last_slot_field = usage->hid;
267                         td->last_field_index = field->index;
268                         return 1;
269                 case HID_DG_TIPPRESSURE:
270                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
271                                 field->logical_minimum = 0;
272                         hid_map_usage(hi, usage, bit, max,
273                                         EV_ABS, ABS_MT_PRESSURE);
274                         set_abs(hi->input, ABS_MT_PRESSURE, field,
275                                 cls->sn_pressure);
276                         /* touchscreen emulation */
277                         set_abs(hi->input, ABS_PRESSURE, field,
278                                 cls->sn_pressure);
279                         td->last_slot_field = usage->hid;
280                         td->last_field_index = field->index;
281                         return 1;
282                 case HID_DG_CONTACTCOUNT:
283                         td->last_field_index = field->index;
284                         return 1;
285                 case HID_DG_CONTACTMAX:
286                         /* we don't set td->last_slot_field as contactcount and
287                          * contact max are global to the report */
288                         td->last_field_index = field->index;
289                         return -1;
290                 }
291                 /* let hid-input decide for the others */
292                 return 0;
293
294         case 0xff000000:
295                 /* we do not want to map these: no input-oriented meaning */
296                 return -1;
297         }
298
299         return 0;
300 }
301
302 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
303                 struct hid_field *field, struct hid_usage *usage,
304                 unsigned long **bit, int *max)
305 {
306         if (usage->type == EV_KEY || usage->type == EV_ABS)
307                 set_bit(usage->type, hi->input->evbit);
308
309         return -1;
310 }
311
312 static int mt_compute_slot(struct mt_device *td)
313 {
314         __s32 quirks = td->mtclass->quirks;
315
316         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
317                 return td->curdata.contactid;
318
319         if (quirks & MT_QUIRK_CYPRESS)
320                 return cypress_compute_slot(td);
321
322         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
323                 return td->num_received;
324
325         return find_slot_from_contactid(td);
326 }
327
328 /*
329  * this function is called when a whole contact has been processed,
330  * so that it can assign it to a slot and store the data there
331  */
332 static void mt_complete_slot(struct mt_device *td)
333 {
334         td->curdata.seen_in_this_frame = true;
335         if (td->curvalid) {
336                 int slotnum = mt_compute_slot(td);
337
338                 if (slotnum >= 0 && slotnum < td->maxcontacts)
339                         td->slots[slotnum] = td->curdata;
340         }
341         td->num_received++;
342 }
343
344
345 /*
346  * this function is called when a whole packet has been received and processed,
347  * so that it can decide what to send to the input layer.
348  */
349 static void mt_emit_event(struct mt_device *td, struct input_dev *input)
350 {
351         int i;
352
353         for (i = 0; i < td->maxcontacts; ++i) {
354                 struct mt_slot *s = &(td->slots[i]);
355                 if ((td->mtclass->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
356                         !s->seen_in_this_frame) {
357                         s->touch_state = false;
358                 }
359
360                 input_mt_slot(input, i);
361                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
362                         s->touch_state);
363                 if (s->touch_state) {
364                         /* this finger is on the screen */
365                         int wide = (s->w > s->h);
366                         /* divided by two to match visual scale of touch */
367                         int major = max(s->w, s->h) >> 1;
368                         int minor = min(s->w, s->h) >> 1;
369
370                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
371                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
372                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
373                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
374                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
375                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
376                 }
377                 s->seen_in_this_frame = false;
378
379         }
380
381         input_mt_report_pointer_emulation(input, true);
382         input_sync(input);
383         td->num_received = 0;
384 }
385
386
387
388 static int mt_event(struct hid_device *hid, struct hid_field *field,
389                                 struct hid_usage *usage, __s32 value)
390 {
391         struct mt_device *td = hid_get_drvdata(hid);
392         __s32 quirks = td->mtclass->quirks;
393
394         if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
395                 switch (usage->hid) {
396                 case HID_DG_INRANGE:
397                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
398                                 td->curvalid = value;
399                         break;
400                 case HID_DG_TIPSWITCH:
401                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
402                                 td->curvalid = value;
403                         td->curdata.touch_state = value;
404                         break;
405                 case HID_DG_CONFIDENCE:
406                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
407                                 td->curvalid = value;
408                         break;
409                 case HID_DG_CONTACTID:
410                         td->curdata.contactid = value;
411                         break;
412                 case HID_DG_TIPPRESSURE:
413                         td->curdata.p = value;
414                         break;
415                 case HID_GD_X:
416                         td->curdata.x = value;
417                         break;
418                 case HID_GD_Y:
419                         td->curdata.y = value;
420                         break;
421                 case HID_DG_WIDTH:
422                         td->curdata.w = value;
423                         break;
424                 case HID_DG_HEIGHT:
425                         td->curdata.h = value;
426                         break;
427                 case HID_DG_CONTACTCOUNT:
428                         /*
429                          * Includes multi-packet support where subsequent
430                          * packets are sent with zero contactcount.
431                          */
432                         if (value)
433                                 td->num_expected = value;
434                         break;
435
436                 default:
437                         /* fallback to the generic hidinput handling */
438                         return 0;
439                 }
440
441                 if (usage->hid == td->last_slot_field) {
442                         mt_complete_slot(td);
443                 }
444
445                 if (field->index == td->last_field_index
446                         && td->num_received >= td->num_expected)
447                         mt_emit_event(td, field->hidinput->input);
448
449         }
450
451         /* we have handled the hidinput part, now remains hiddev */
452         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
453                 hid->hiddev_hid_event(hid, field, usage, value);
454
455         return 1;
456 }
457
458 static void mt_set_input_mode(struct hid_device *hdev)
459 {
460         struct mt_device *td = hid_get_drvdata(hdev);
461         struct hid_report *r;
462         struct hid_report_enum *re;
463
464         if (td->inputmode < 0)
465                 return;
466
467         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
468         r = re->report_id_hash[td->inputmode];
469         if (r) {
470                 r->field[0]->value[0] = 0x02;
471                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
472         }
473 }
474
475 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
476 {
477         int ret, i;
478         struct mt_device *td;
479         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
480
481         for (i = 0; mt_classes[i].name ; i++) {
482                 if (id->driver_data == mt_classes[i].name) {
483                         mtclass = &(mt_classes[i]);
484                         break;
485                 }
486         }
487
488         /* This allows the driver to correctly support devices
489          * that emit events over several HID messages.
490          */
491         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
492
493         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
494         if (!td) {
495                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
496                 return -ENOMEM;
497         }
498         td->mtclass = mtclass;
499         td->inputmode = -1;
500         hid_set_drvdata(hdev, td);
501
502         ret = hid_parse(hdev);
503         if (ret != 0)
504                 goto fail;
505
506         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
507         if (ret)
508                 goto fail;
509
510         if (!td->maxcontacts)
511                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
512
513         td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
514                                 GFP_KERNEL);
515         if (!td->slots) {
516                 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
517                 hid_hw_stop(hdev);
518                 ret = -ENOMEM;
519                 goto fail;
520         }
521
522         mt_set_input_mode(hdev);
523
524         return 0;
525
526 fail:
527         kfree(td);
528         return ret;
529 }
530
531 #ifdef CONFIG_PM
532 static int mt_reset_resume(struct hid_device *hdev)
533 {
534         mt_set_input_mode(hdev);
535         return 0;
536 }
537 #endif
538
539 static void mt_remove(struct hid_device *hdev)
540 {
541         struct mt_device *td = hid_get_drvdata(hdev);
542         hid_hw_stop(hdev);
543         kfree(td->slots);
544         kfree(td);
545         hid_set_drvdata(hdev, NULL);
546 }
547
548 static const struct hid_device_id mt_devices[] = {
549
550         /* 3M panels */
551         { .driver_data = MT_CLS_3M,
552                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
553                         USB_DEVICE_ID_3M1968) },
554         { .driver_data = MT_CLS_3M,
555                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
556                         USB_DEVICE_ID_3M2256) },
557
558         /* Cando panels */
559         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
560                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
561                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
562         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
563                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
564                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
565         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
566                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
567                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
568         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
569                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
570                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
571
572         /* Cypress panel */
573         { .driver_data = MT_CLS_CYPRESS,
574                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
575                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
576
577         /* GeneralTouch panel */
578         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
579                 HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
580                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
581
582         /* IRTOUCH panels */
583         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
584                 HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
585                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
586
587         /* PixCir-based panels */
588         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
589                 HID_USB_DEVICE(USB_VENDOR_ID_HANVON,
590                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
591         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
592                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
593                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
594
595         /* Resistive eGalax devices */
596         {  .driver_data = MT_CLS_EGALAX,
597                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
598                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
599         {  .driver_data = MT_CLS_EGALAX,
600                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
601                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
602
603         /* Capacitive eGalax devices */
604         {  .driver_data = MT_CLS_EGALAX,
605                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
606                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
607         {  .driver_data = MT_CLS_EGALAX,
608                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
609                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
610         {  .driver_data = MT_CLS_EGALAX,
611                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
612                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
613
614         /* Stantum panels */
615         { .driver_data = MT_CLS_STANTUM,
616                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
617                         USB_DEVICE_ID_MTP)},
618         { .driver_data = MT_CLS_STANTUM,
619                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
620                         USB_DEVICE_ID_MTP_STM)},
621         { .driver_data = MT_CLS_STANTUM,
622                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
623                         USB_DEVICE_ID_MTP_SITRONIX)},
624
625         { }
626 };
627 MODULE_DEVICE_TABLE(hid, mt_devices);
628
629 static const struct hid_usage_id mt_grabbed_usages[] = {
630         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
631         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
632 };
633
634 static struct hid_driver mt_driver = {
635         .name = "hid-multitouch",
636         .id_table = mt_devices,
637         .probe = mt_probe,
638         .remove = mt_remove,
639         .input_mapping = mt_input_mapping,
640         .input_mapped = mt_input_mapped,
641         .feature_mapping = mt_feature_mapping,
642         .usage_table = mt_grabbed_usages,
643         .event = mt_event,
644 #ifdef CONFIG_PM
645         .reset_resume = mt_reset_resume,
646 #endif
647 };
648
649 static int __init mt_init(void)
650 {
651         return hid_register_driver(&mt_driver);
652 }
653
654 static void __exit mt_exit(void)
655 {
656         hid_unregister_driver(&mt_driver);
657 }
658
659 module_init(mt_init);
660 module_exit(mt_exit);