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);