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);