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 #define MT_CLS_CONFIDENCE                       8
  93
  94 #define MT_DEFAULT_MAXCONTACT   10
  95
  96 /*
  97  * these device-dependent functions determine what slot corresponds
  98  * to a valid contact that was just read.
  99  */
 100
 101 static int cypress_compute_slot(struct mt_device *td)
 102 {
 103         if (td->curdata.contactid != 0 || td->num_received == 0)
 104                 return td->curdata.contactid;
 105         else
 106                 return -1;
 107 }
 108
 109 static int find_slot_from_contactid(struct mt_device *td)
 110 {
 111         int i;
 112         for (i = 0; i < td->maxcontacts; ++i) {
 113                 if (td->slots[i].contactid == td->curdata.contactid &&
 114                         td->slots[i].touch_state)
 115                         return i;
 116         }
 117         for (i = 0; i < td->maxcontacts; ++i) {
 118                 if (!td->slots[i].seen_in_this_frame &&
 119                         !td->slots[i].touch_state)
 120                         return i;
 121         }
 122         /* should not occurs. If this happens that means
 123          * that the device sent more touches that it says
 124          * in the report descriptor. It is ignored then. */
 125         return -1;
 126 }
 127
 128 struct mt_class mt_classes[] = {
 129         { .name = MT_CLS_DEFAULT,
 130                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 131         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 132                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 133                         MT_QUIRK_SLOT_IS_CONTACTID,
 134                 .maxcontacts = 2 },
 135         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 136                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 137                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 138                 .maxcontacts = 2 },
 139         { .name = MT_CLS_CYPRESS,
 140                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 141                         MT_QUIRK_CYPRESS,
 142                 .maxcontacts = 10 },
 143
 144         { .name = MT_CLS_EGALAX,
 145                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 146                         MT_QUIRK_VALID_IS_INRANGE |
 147                         MT_QUIRK_EGALAX_XYZ_FIXUP,
 148                 .maxcontacts = 2,
 149                 .sn_move = 4096,
 150                 .sn_pressure = 32,
 151         },
 152         { .name = MT_CLS_STANTUM,
 153                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 154         { .name = MT_CLS_3M,
 155                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 156                         MT_QUIRK_SLOT_IS_CONTACTID,
 157                 .sn_move = 2048,
 158                 .sn_width = 128,
 159                 .sn_height = 128 },
 160         { .name = MT_CLS_CONFIDENCE,
 161                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 162
 163         { }
 164 };
 165
 166 static void mt_feature_mapping(struct hid_device *hdev,
 167                 struct hid_field *field, struct hid_usage *usage)
 168 {
 169         struct mt_device *td = hid_get_drvdata(hdev);
 170
 171         switch (usage->hid) {
 172         case HID_DG_INPUTMODE:
 173                 td->inputmode = field->report->id;
 174                 break;
 175         case HID_DG_CONTACTMAX:
 176                 td->maxcontacts = field->value[0];
 177                 if (td->mtclass->maxcontacts)
 178                         /* check if the maxcontacts is given by the class */
 179                         td->maxcontacts = td->mtclass->maxcontacts;
 180
 181                 break;
 182         }
 183 }
 184
 185 static void set_abs(struct input_dev *input, unsigned int code,
 186                 struct hid_field *field, int snratio)
 187 {
 188         int fmin = field->logical_minimum;
 189         int fmax = field->logical_maximum;
 190         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 191         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 192 }
 193
 194 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 195                 struct hid_field *field, struct hid_usage *usage,
 196                 unsigned long **bit, int *max)
 197 {
 198         struct mt_device *td = hid_get_drvdata(hdev);
 199         struct mt_class *cls = td->mtclass;
 200         __s32 quirks = cls->quirks;
 201
 202         switch (usage->hid & HID_USAGE_PAGE) {
 203
 204         case HID_UP_GENDESK:
 205                 switch (usage->hid) {
 206                 case HID_GD_X:
 207                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 208                                 field->logical_maximum = 32760;
 209                         hid_map_usage(hi, usage, bit, max,
 210                                         EV_ABS, ABS_MT_POSITION_X);
 211                         set_abs(hi->input, ABS_MT_POSITION_X, field,
 212                                 cls->sn_move);
 213                         /* touchscreen emulation */
 214                         set_abs(hi->input, ABS_X, field, cls->sn_move);
 215                         td->last_slot_field = usage->hid;
 216                         td->last_field_index = field->index;
 217                         return 1;
 218                 case HID_GD_Y:
 219                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 220                                 field->logical_maximum = 32760;
 221                         hid_map_usage(hi, usage, bit, max,
 222                                         EV_ABS, ABS_MT_POSITION_Y);
 223                         set_abs(hi->input, ABS_MT_POSITION_Y, field,
 224                                 cls->sn_move);
 225                         /* touchscreen emulation */
 226                         set_abs(hi->input, ABS_Y, field, cls->sn_move);
 227                         td->last_slot_field = usage->hid;
 228                         td->last_field_index = field->index;
 229                         return 1;
 230                 }
 231                 return 0;
 232
 233         case HID_UP_DIGITIZER:
 234                 switch (usage->hid) {
 235                 case HID_DG_INRANGE:
 236                         td->last_slot_field = usage->hid;
 237                         td->last_field_index = field->index;
 238                         return 1;
 239                 case HID_DG_CONFIDENCE:
 240                         td->last_slot_field = usage->hid;
 241                         td->last_field_index = field->index;
 242                         return 1;
 243                 case HID_DG_TIPSWITCH:
 244                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 245                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 246                         td->last_slot_field = usage->hid;
 247                         td->last_field_index = field->index;
 248                         return 1;
 249                 case HID_DG_CONTACTID:
 250                         input_mt_init_slots(hi->input, td->maxcontacts);
 251                         td->last_slot_field = usage->hid;
 252                         td->last_field_index = field->index;
 253                         return 1;
 254                 case HID_DG_WIDTH:
 255                         hid_map_usage(hi, usage, bit, max,
 256                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 257                         set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 258                                 cls->sn_width);
 259                         td->last_slot_field = usage->hid;
 260                         td->last_field_index = field->index;
 261                         return 1;
 262                 case HID_DG_HEIGHT:
 263                         hid_map_usage(hi, usage, bit, max,
 264                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 265                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 266                                 cls->sn_height);
 267                         input_set_abs_params(hi->input,
 268                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 269                         td->last_slot_field = usage->hid;
 270                         td->last_field_index = field->index;
 271                         return 1;
 272                 case HID_DG_TIPPRESSURE:
 273                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 274                                 field->logical_minimum = 0;
 275                         hid_map_usage(hi, usage, bit, max,
 276                                         EV_ABS, ABS_MT_PRESSURE);
 277                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 278                                 cls->sn_pressure);
 279                         /* touchscreen emulation */
 280                         set_abs(hi->input, ABS_PRESSURE, field,
 281                                 cls->sn_pressure);
 282                         td->last_slot_field = usage->hid;
 283                         td->last_field_index = field->index;
 284                         return 1;
 285                 case HID_DG_CONTACTCOUNT:
 286                         td->last_field_index = field->index;
 287                         return 1;
 288                 case HID_DG_CONTACTMAX:
 289                         /* we don't set td->last_slot_field as contactcount and
 290                          * contact max are global to the report */
 291                         td->last_field_index = field->index;
 292                         return -1;
 293                 }
 294                 /* let hid-input decide for the others */
 295                 return 0;
 296
 297         case 0xff000000:
 298                 /* we do not want to map these: no input-oriented meaning */
 299                 return -1;
 300         }
 301
 302         return 0;
 303 }
 304
 305 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 306                 struct hid_field *field, struct hid_usage *usage,
 307                 unsigned long **bit, int *max)
 308 {
 309         if (usage->type == EV_KEY || usage->type == EV_ABS)
 310                 set_bit(usage->type, hi->input->evbit);
 311
 312         return -1;
 313 }
 314
 315 static int mt_compute_slot(struct mt_device *td)
 316 {
 317         __s32 quirks = td->mtclass->quirks;
 318
 319         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 320                 return td->curdata.contactid;
 321
 322         if (quirks & MT_QUIRK_CYPRESS)
 323                 return cypress_compute_slot(td);
 324
 325         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 326                 return td->num_received;
 327
 328         return find_slot_from_contactid(td);
 329 }
 330
 331 /*
 332  * this function is called when a whole contact has been processed,
 333  * so that it can assign it to a slot and store the data there
 334  */
 335 static void mt_complete_slot(struct mt_device *td)
 336 {
 337         td->curdata.seen_in_this_frame = true;
 338         if (td->curvalid) {
 339                 int slotnum = mt_compute_slot(td);
 340
 341                 if (slotnum >= 0 && slotnum < td->maxcontacts)
 342                         td->slots[slotnum] = td->curdata;
 343         }
 344         td->num_received++;
 345 }
 346
 347
 348 /*
 349  * this function is called when a whole packet has been received and processed,
 350  * so that it can decide what to send to the input layer.
 351  */
 352 static void mt_emit_event(struct mt_device *td, struct input_dev *input)
 353 {
 354         int i;
 355
 356         for (i = 0; i < td->maxcontacts; ++i) {
 357                 struct mt_slot *s = &(td->slots[i]);
 358                 if ((td->mtclass->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
 359                         !s->seen_in_this_frame) {
 360                         s->touch_state = false;
 361                 }
 362
 363                 input_mt_slot(input, i);
 364                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 365                         s->touch_state);
 366                 if (s->touch_state) {
 367                         /* this finger is on the screen */
 368                         int wide = (s->w > s->h);
 369                         /* divided by two to match visual scale of touch */
 370                         int major = max(s->w, s->h) >> 1;
 371                         int minor = min(s->w, s->h) >> 1;
 372
 373                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 374                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 375                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 376                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 377                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 378                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 379                 }
 380                 s->seen_in_this_frame = false;
 381
 382         }
 383
 384         input_mt_report_pointer_emulation(input, true);
 385         input_sync(input);
 386         td->num_received = 0;
 387 }
 388
 389
 390
 391 static int mt_event(struct hid_device *hid, struct hid_field *field,
 392                                 struct hid_usage *usage, __s32 value)
 393 {
 394         struct mt_device *td = hid_get_drvdata(hid);
 395         __s32 quirks = td->mtclass->quirks;
 396
 397         if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
 398                 switch (usage->hid) {
 399                 case HID_DG_INRANGE:
 400                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 401                                 td->curvalid = value;
 402                         break;
 403                 case HID_DG_TIPSWITCH:
 404                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 405                                 td->curvalid = value;
 406                         td->curdata.touch_state = value;
 407                         break;
 408                 case HID_DG_CONFIDENCE:
 409                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 410                                 td->curvalid = value;
 411                         break;
 412                 case HID_DG_CONTACTID:
 413                         td->curdata.contactid = value;
 414                         break;
 415                 case HID_DG_TIPPRESSURE:
 416                         td->curdata.p = value;
 417                         break;
 418                 case HID_GD_X:
 419                         td->curdata.x = value;
 420                         break;
 421                 case HID_GD_Y:
 422                         td->curdata.y = value;
 423                         break;
 424                 case HID_DG_WIDTH:
 425                         td->curdata.w = value;
 426                         break;
 427                 case HID_DG_HEIGHT:
 428                         td->curdata.h = value;
 429                         break;
 430                 case HID_DG_CONTACTCOUNT:
 431                         /*
 432                          * Includes multi-packet support where subsequent
 433                          * packets are sent with zero contactcount.
 434                          */
 435                         if (value)
 436                                 td->num_expected = value;
 437                         break;
 438
 439                 default:
 440                         /* fallback to the generic hidinput handling */
 441                         return 0;
 442                 }
 443
 444                 if (usage->hid == td->last_slot_field) {
 445                         mt_complete_slot(td);
 446                 }
 447
 448                 if (field->index == td->last_field_index
 449                         && td->num_received >= td->num_expected)
 450                         mt_emit_event(td, field->hidinput->input);
 451
 452         }
 453
 454         /* we have handled the hidinput part, now remains hiddev */
 455         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 456                 hid->hiddev_hid_event(hid, field, usage, value);
 457
 458         return 1;
 459 }
 460
 461 static void mt_set_input_mode(struct hid_device *hdev)
 462 {
 463         struct mt_device *td = hid_get_drvdata(hdev);
 464         struct hid_report *r;
 465         struct hid_report_enum *re;
 466
 467         if (td->inputmode < 0)
 468                 return;
 469
 470         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 471         r = re->report_id_hash[td->inputmode];
 472         if (r) {
 473                 r->field[0]->value[0] = 0x02;
 474                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
 475         }
 476 }
 477
 478 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 479 {
 480         int ret, i;
 481         struct mt_device *td;
 482         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 483
 484         for (i = 0; mt_classes[i].name ; i++) {
 485                 if (id->driver_data == mt_classes[i].name) {
 486                         mtclass = &(mt_classes[i]);
 487                         break;
 488                 }
 489         }
 490
 491         /* This allows the driver to correctly support devices
 492          * that emit events over several HID messages.
 493          */
 494         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 495
 496         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 497         if (!td) {
 498                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 499                 return -ENOMEM;
 500         }
 501         td->mtclass = mtclass;
 502         td->inputmode = -1;
 503         hid_set_drvdata(hdev, td);
 504
 505         ret = hid_parse(hdev);
 506         if (ret != 0)
 507                 goto fail;
 508
 509         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 510         if (ret)
 511                 goto fail;
 512
 513         if (!td->maxcontacts)
 514                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 515
 516         td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
 517                                 GFP_KERNEL);
 518         if (!td->slots) {
 519                 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
 520                 hid_hw_stop(hdev);
 521                 ret = -ENOMEM;
 522                 goto fail;
 523         }
 524
 525         mt_set_input_mode(hdev);
 526
 527         return 0;
 528
 529 fail:
 530         kfree(td);
 531         return ret;
 532 }
 533
 534 #ifdef CONFIG_PM
 535 static int mt_reset_resume(struct hid_device *hdev)
 536 {
 537         mt_set_input_mode(hdev);
 538         return 0;
 539 }
 540 #endif
 541
 542 static void mt_remove(struct hid_device *hdev)
 543 {
 544         struct mt_device *td = hid_get_drvdata(hdev);
 545         hid_hw_stop(hdev);
 546         kfree(td->slots);
 547         kfree(td);
 548         hid_set_drvdata(hdev, NULL);
 549 }
 550
 551 static const struct hid_device_id mt_devices[] = {
 552
 553         /* 3M panels */
 554         { .driver_data = MT_CLS_3M,
 555                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
 556                         USB_DEVICE_ID_3M1968) },
 557         { .driver_data = MT_CLS_3M,
 558                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
 559                         USB_DEVICE_ID_3M2256) },
 560
 561         /* Cando panels */
 562         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 563                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 564                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 565         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 566                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 567                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 568         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 569                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 570                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 571         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 572                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 573                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 574
 575         /* Cypress panel */
 576         { .driver_data = MT_CLS_CYPRESS,
 577                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 578                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 579
 580         /* GeneralTouch panel */
 581         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 582                 HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 583                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
 584
 585         /* IRTOUCH panels */
 586         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 587                 HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
 588                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
 589
 590         /* PenMount panels */
 591         { .driver_data = MT_CLS_CONFIDENCE,
 592                 HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
 593                         USB_DEVICE_ID_PENMOUNT_PCI) },
 594
 595         /* PixCir-based panels */
 596         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 597                 HID_USB_DEVICE(USB_VENDOR_ID_HANVON,
 598                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
 599         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 600                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 601                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
 602
 603         /* Resistive eGalax devices */
 604         {  .driver_data = MT_CLS_EGALAX,
 605                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 606                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
 607         {  .driver_data = MT_CLS_EGALAX,
 608                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 609                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
 610
 611         /* Capacitive eGalax devices */
 612         {  .driver_data = MT_CLS_EGALAX,
 613                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 614                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
 615         {  .driver_data = MT_CLS_EGALAX,
 616                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 617                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
 618         {  .driver_data = MT_CLS_EGALAX,
 619                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 620                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
 621
 622         /* Stantum panels */
 623         { .driver_data = MT_CLS_STANTUM,
 624                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 625                         USB_DEVICE_ID_MTP)},
 626         { .driver_data = MT_CLS_STANTUM,
 627                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 628                         USB_DEVICE_ID_MTP_STM)},
 629         { .driver_data = MT_CLS_STANTUM,
 630                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 631                         USB_DEVICE_ID_MTP_SITRONIX)},
 632
 633         { }
 634 };
 635 MODULE_DEVICE_TABLE(hid, mt_devices);
 636
 637 static const struct hid_usage_id mt_grabbed_usages[] = {
 638         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
 639         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
 640 };
 641
 642 static struct hid_driver mt_driver = {
 643         .name = "hid-multitouch",
 644         .id_table = mt_devices,
 645         .probe = mt_probe,
 646         .remove = mt_remove,
 647         .input_mapping = mt_input_mapping,
 648         .input_mapped = mt_input_mapped,
 649         .feature_mapping = mt_feature_mapping,
 650         .usage_table = mt_grabbed_usages,
 651         .event = mt_event,
 652 #ifdef CONFIG_PM
 653         .reset_resume = mt_reset_resume,
 654 #endif
 655 };
 656
 657 static int __init mt_init(void)
 658 {
 659         return hid_register_driver(&mt_driver);
 660 }
 661
 662 static void __exit mt_exit(void)
 663 {
 664         hid_unregister_driver(&mt_driver);
 665 }
 666
 667 module_init(mt_init);
 668 module_exit(mt_exit);