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 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE    (1 << 7)
  54
  55 struct mt_slot {
  56         __s32 x, y, p, w, h;
  57         __s32 contactid;        /* the device ContactID assigned to this slot */
  58         bool touch_state;       /* is the touch valid? */
  59         bool seen_in_this_frame;/* has this slot been updated */
  60 };
  61
  62 struct mt_device {
  63         struct mt_slot curdata; /* placeholder of incoming data */
  64         struct mt_class *mtclass;       /* our mt device class */
  65         unsigned last_field_index;      /* last field index of the report */
  66         unsigned last_slot_field;       /* the last field of a slot */
  67         __s8 inputmode;         /* InputMode HID feature, -1 if non-existent */
  68         __u8 num_received;      /* how many contacts we received */
  69         __u8 num_expected;      /* expected last contact index */
  70         __u8 maxcontacts;
  71         bool curvalid;          /* is the current contact valid? */
  72         struct mt_slot *slots;
  73 };
  74
  75 struct mt_class {
  76         __s32 name;     /* MT_CLS */
  77         __s32 quirks;
  78         __s32 sn_move;  /* Signal/noise ratio for move events */
  79         __s32 sn_width; /* Signal/noise ratio for width events */
  80         __s32 sn_height;        /* Signal/noise ratio for height events */
  81         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
  82         __u8 maxcontacts;
  83 };
  84
  85 /* classes of device behavior */
  86 #define MT_CLS_DEFAULT                          1
  87 #define MT_CLS_DUAL_INRANGE_CONTACTID           2
  88 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       3
  89 #define MT_CLS_CYPRESS                          4
  90 #define MT_CLS_EGALAX                           5
  91 #define MT_CLS_3M                               7
  92 #define MT_CLS_CONFIDENCE                       8
  93 #define MT_CLS_CONFIDENCE_MINUS_ONE             9
  94 #define MT_CLS_DUAL_NSMU_CONTACTID              10
  95
  96 #define MT_DEFAULT_MAXCONTACT   10
  97
  98 /*
  99  * these device-dependent functions determine what slot corresponds
 100  * to a valid contact that was just read.
 101  */
 102
 103 static int cypress_compute_slot(struct mt_device *td)
 104 {
 105         if (td->curdata.contactid != 0 || td->num_received == 0)
 106                 return td->curdata.contactid;
 107         else
 108                 return -1;
 109 }
 110
 111 static int find_slot_from_contactid(struct mt_device *td)
 112 {
 113         int i;
 114         for (i = 0; i < td->maxcontacts; ++i) {
 115                 if (td->slots[i].contactid == td->curdata.contactid &&
 116                         td->slots[i].touch_state)
 117                         return i;
 118         }
 119         for (i = 0; i < td->maxcontacts; ++i) {
 120                 if (!td->slots[i].seen_in_this_frame &&
 121                         !td->slots[i].touch_state)
 122                         return i;
 123         }
 124         /* should not occurs. If this happens that means
 125          * that the device sent more touches that it says
 126          * in the report descriptor. It is ignored then. */
 127         return -1;
 128 }
 129
 130 struct mt_class mt_classes[] = {
 131         { .name = MT_CLS_DEFAULT,
 132                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 133         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 134                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 135                         MT_QUIRK_SLOT_IS_CONTACTID,
 136                 .maxcontacts = 2 },
 137         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 138                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 139                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 140                 .maxcontacts = 2 },
 141         { .name = MT_CLS_CYPRESS,
 142                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 143                         MT_QUIRK_CYPRESS,
 144                 .maxcontacts = 10 },
 145         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 146                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 147                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 148         { .name = MT_CLS_EGALAX,
 149                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 150                         MT_QUIRK_VALID_IS_INRANGE |
 151                         MT_QUIRK_EGALAX_XYZ_FIXUP,
 152                 .maxcontacts = 2,
 153                 .sn_move = 4096,
 154                 .sn_pressure = 32,
 155         },
 156         { .name = MT_CLS_3M,
 157                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 158                         MT_QUIRK_SLOT_IS_CONTACTID,
 159                 .sn_move = 2048,
 160                 .sn_width = 128,
 161                 .sn_height = 128 },
 162         { .name = MT_CLS_CONFIDENCE,
 163                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 164         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
 165                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 166                         MT_QUIRK_SLOT_IS_CONTACTID,
 167                 .maxcontacts = 2 },
 168
 169         { }
 170 };
 171
 172 static void mt_feature_mapping(struct hid_device *hdev,
 173                 struct hid_field *field, struct hid_usage *usage)
 174 {
 175         struct mt_device *td = hid_get_drvdata(hdev);
 176
 177         switch (usage->hid) {
 178         case HID_DG_INPUTMODE:
 179                 td->inputmode = field->report->id;
 180                 break;
 181         case HID_DG_CONTACTMAX:
 182                 td->maxcontacts = field->value[0];
 183                 if (td->mtclass->maxcontacts)
 184                         /* check if the maxcontacts is given by the class */
 185                         td->maxcontacts = td->mtclass->maxcontacts;
 186
 187                 break;
 188         }
 189 }
 190
 191 static void set_abs(struct input_dev *input, unsigned int code,
 192                 struct hid_field *field, int snratio)
 193 {
 194         int fmin = field->logical_minimum;
 195         int fmax = field->logical_maximum;
 196         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 197         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 198 }
 199
 200 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 201                 struct hid_field *field, struct hid_usage *usage,
 202                 unsigned long **bit, int *max)
 203 {
 204         struct mt_device *td = hid_get_drvdata(hdev);
 205         struct mt_class *cls = td->mtclass;
 206         __s32 quirks = cls->quirks;
 207
 208         switch (usage->hid & HID_USAGE_PAGE) {
 209
 210         case HID_UP_GENDESK:
 211                 switch (usage->hid) {
 212                 case HID_GD_X:
 213                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 214                                 field->logical_maximum = 32760;
 215                         hid_map_usage(hi, usage, bit, max,
 216                                         EV_ABS, ABS_MT_POSITION_X);
 217                         set_abs(hi->input, ABS_MT_POSITION_X, field,
 218                                 cls->sn_move);
 219                         /* touchscreen emulation */
 220                         set_abs(hi->input, ABS_X, field, cls->sn_move);
 221                         td->last_slot_field = usage->hid;
 222                         td->last_field_index = field->index;
 223                         return 1;
 224                 case HID_GD_Y:
 225                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 226                                 field->logical_maximum = 32760;
 227                         hid_map_usage(hi, usage, bit, max,
 228                                         EV_ABS, ABS_MT_POSITION_Y);
 229                         set_abs(hi->input, ABS_MT_POSITION_Y, field,
 230                                 cls->sn_move);
 231                         /* touchscreen emulation */
 232                         set_abs(hi->input, ABS_Y, field, cls->sn_move);
 233                         td->last_slot_field = usage->hid;
 234                         td->last_field_index = field->index;
 235                         return 1;
 236                 }
 237                 return 0;
 238
 239         case HID_UP_DIGITIZER:
 240                 switch (usage->hid) {
 241                 case HID_DG_INRANGE:
 242                         td->last_slot_field = usage->hid;
 243                         td->last_field_index = field->index;
 244                         return 1;
 245                 case HID_DG_CONFIDENCE:
 246                         td->last_slot_field = usage->hid;
 247                         td->last_field_index = field->index;
 248                         return 1;
 249                 case HID_DG_TIPSWITCH:
 250                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 251                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 252                         td->last_slot_field = usage->hid;
 253                         td->last_field_index = field->index;
 254                         return 1;
 255                 case HID_DG_CONTACTID:
 256                         input_mt_init_slots(hi->input, td->maxcontacts);
 257                         td->last_slot_field = usage->hid;
 258                         td->last_field_index = field->index;
 259                         return 1;
 260                 case HID_DG_WIDTH:
 261                         hid_map_usage(hi, usage, bit, max,
 262                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 263                         set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 264                                 cls->sn_width);
 265                         td->last_slot_field = usage->hid;
 266                         td->last_field_index = field->index;
 267                         return 1;
 268                 case HID_DG_HEIGHT:
 269                         hid_map_usage(hi, usage, bit, max,
 270                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 271                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 272                                 cls->sn_height);
 273                         input_set_abs_params(hi->input,
 274                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 275                         td->last_slot_field = usage->hid;
 276                         td->last_field_index = field->index;
 277                         return 1;
 278                 case HID_DG_TIPPRESSURE:
 279                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 280                                 field->logical_minimum = 0;
 281                         hid_map_usage(hi, usage, bit, max,
 282                                         EV_ABS, ABS_MT_PRESSURE);
 283                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 284                                 cls->sn_pressure);
 285                         /* touchscreen emulation */
 286                         set_abs(hi->input, ABS_PRESSURE, field,
 287                                 cls->sn_pressure);
 288                         td->last_slot_field = usage->hid;
 289                         td->last_field_index = field->index;
 290                         return 1;
 291                 case HID_DG_CONTACTCOUNT:
 292                         td->last_field_index = field->index;
 293                         return 1;
 294                 case HID_DG_CONTACTMAX:
 295                         /* we don't set td->last_slot_field as contactcount and
 296                          * contact max are global to the report */
 297                         td->last_field_index = field->index;
 298                         return -1;
 299                 }
 300                 /* let hid-input decide for the others */
 301                 return 0;
 302
 303         case 0xff000000:
 304                 /* we do not want to map these: no input-oriented meaning */
 305                 return -1;
 306         }
 307
 308         return 0;
 309 }
 310
 311 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 312                 struct hid_field *field, struct hid_usage *usage,
 313                 unsigned long **bit, int *max)
 314 {
 315         if (usage->type == EV_KEY || usage->type == EV_ABS)
 316                 set_bit(usage->type, hi->input->evbit);
 317
 318         return -1;
 319 }
 320
 321 static int mt_compute_slot(struct mt_device *td)
 322 {
 323         __s32 quirks = td->mtclass->quirks;
 324
 325         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 326                 return td->curdata.contactid;
 327
 328         if (quirks & MT_QUIRK_CYPRESS)
 329                 return cypress_compute_slot(td);
 330
 331         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 332                 return td->num_received;
 333
 334         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 335                 return td->curdata.contactid - 1;
 336
 337         return find_slot_from_contactid(td);
 338 }
 339
 340 /*
 341  * this function is called when a whole contact has been processed,
 342  * so that it can assign it to a slot and store the data there
 343  */
 344 static void mt_complete_slot(struct mt_device *td)
 345 {
 346         td->curdata.seen_in_this_frame = true;
 347         if (td->curvalid) {
 348                 int slotnum = mt_compute_slot(td);
 349
 350                 if (slotnum >= 0 && slotnum < td->maxcontacts)
 351                         td->slots[slotnum] = td->curdata;
 352         }
 353         td->num_received++;
 354 }
 355
 356
 357 /*
 358  * this function is called when a whole packet has been received and processed,
 359  * so that it can decide what to send to the input layer.
 360  */
 361 static void mt_emit_event(struct mt_device *td, struct input_dev *input)
 362 {
 363         int i;
 364
 365         for (i = 0; i < td->maxcontacts; ++i) {
 366                 struct mt_slot *s = &(td->slots[i]);
 367                 if ((td->mtclass->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
 368                         !s->seen_in_this_frame) {
 369                         s->touch_state = false;
 370                 }
 371
 372                 input_mt_slot(input, i);
 373                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 374                         s->touch_state);
 375                 if (s->touch_state) {
 376                         /* this finger is on the screen */
 377                         int wide = (s->w > s->h);
 378                         /* divided by two to match visual scale of touch */
 379                         int major = max(s->w, s->h) >> 1;
 380                         int minor = min(s->w, s->h) >> 1;
 381
 382                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 383                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 384                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 385                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 386                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 387                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 388                 }
 389                 s->seen_in_this_frame = false;
 390
 391         }
 392
 393         input_mt_report_pointer_emulation(input, true);
 394         input_sync(input);
 395         td->num_received = 0;
 396 }
 397
 398
 399
 400 static int mt_event(struct hid_device *hid, struct hid_field *field,
 401                                 struct hid_usage *usage, __s32 value)
 402 {
 403         struct mt_device *td = hid_get_drvdata(hid);
 404         __s32 quirks = td->mtclass->quirks;
 405
 406         if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
 407                 switch (usage->hid) {
 408                 case HID_DG_INRANGE:
 409                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 410                                 td->curvalid = value;
 411                         break;
 412                 case HID_DG_TIPSWITCH:
 413                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 414                                 td->curvalid = value;
 415                         td->curdata.touch_state = value;
 416                         break;
 417                 case HID_DG_CONFIDENCE:
 418                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 419                                 td->curvalid = value;
 420                         break;
 421                 case HID_DG_CONTACTID:
 422                         td->curdata.contactid = value;
 423                         break;
 424                 case HID_DG_TIPPRESSURE:
 425                         td->curdata.p = value;
 426                         break;
 427                 case HID_GD_X:
 428                         td->curdata.x = value;
 429                         break;
 430                 case HID_GD_Y:
 431                         td->curdata.y = value;
 432                         break;
 433                 case HID_DG_WIDTH:
 434                         td->curdata.w = value;
 435                         break;
 436                 case HID_DG_HEIGHT:
 437                         td->curdata.h = value;
 438                         break;
 439                 case HID_DG_CONTACTCOUNT:
 440                         /*
 441                          * Includes multi-packet support where subsequent
 442                          * packets are sent with zero contactcount.
 443                          */
 444                         if (value)
 445                                 td->num_expected = value;
 446                         break;
 447
 448                 default:
 449                         /* fallback to the generic hidinput handling */
 450                         return 0;
 451                 }
 452
 453                 if (usage->hid == td->last_slot_field) {
 454                         mt_complete_slot(td);
 455                 }
 456
 457                 if (field->index == td->last_field_index
 458                         && td->num_received >= td->num_expected)
 459                         mt_emit_event(td, field->hidinput->input);
 460
 461         }
 462
 463         /* we have handled the hidinput part, now remains hiddev */
 464         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 465                 hid->hiddev_hid_event(hid, field, usage, value);
 466
 467         return 1;
 468 }
 469
 470 static void mt_set_input_mode(struct hid_device *hdev)
 471 {
 472         struct mt_device *td = hid_get_drvdata(hdev);
 473         struct hid_report *r;
 474         struct hid_report_enum *re;
 475
 476         if (td->inputmode < 0)
 477                 return;
 478
 479         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 480         r = re->report_id_hash[td->inputmode];
 481         if (r) {
 482                 r->field[0]->value[0] = 0x02;
 483                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
 484         }
 485 }
 486
 487 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 488 {
 489         int ret, i;
 490         struct mt_device *td;
 491         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 492
 493         for (i = 0; mt_classes[i].name ; i++) {
 494                 if (id->driver_data == mt_classes[i].name) {
 495                         mtclass = &(mt_classes[i]);
 496                         break;
 497                 }
 498         }
 499
 500         /* This allows the driver to correctly support devices
 501          * that emit events over several HID messages.
 502          */
 503         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 504
 505         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 506         if (!td) {
 507                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 508                 return -ENOMEM;
 509         }
 510         td->mtclass = mtclass;
 511         td->inputmode = -1;
 512         hid_set_drvdata(hdev, td);
 513
 514         ret = hid_parse(hdev);
 515         if (ret != 0)
 516                 goto fail;
 517
 518         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 519         if (ret)
 520                 goto fail;
 521
 522         if (!td->maxcontacts)
 523                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 524
 525         td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
 526                                 GFP_KERNEL);
 527         if (!td->slots) {
 528                 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
 529                 hid_hw_stop(hdev);
 530                 ret = -ENOMEM;
 531                 goto fail;
 532         }
 533
 534         mt_set_input_mode(hdev);
 535
 536         return 0;
 537
 538 fail:
 539         kfree(td);
 540         return ret;
 541 }
 542
 543 #ifdef CONFIG_PM
 544 static int mt_reset_resume(struct hid_device *hdev)
 545 {
 546         mt_set_input_mode(hdev);
 547         return 0;
 548 }
 549 #endif
 550
 551 static void mt_remove(struct hid_device *hdev)
 552 {
 553         struct mt_device *td = hid_get_drvdata(hdev);
 554         hid_hw_stop(hdev);
 555         kfree(td->slots);
 556         kfree(td);
 557         hid_set_drvdata(hdev, NULL);
 558 }
 559
 560 static const struct hid_device_id mt_devices[] = {
 561
 562         /* 3M panels */
 563         { .driver_data = MT_CLS_3M,
 564                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
 565                         USB_DEVICE_ID_3M1968) },
 566         { .driver_data = MT_CLS_3M,
 567                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
 568                         USB_DEVICE_ID_3M2256) },
 569
 570         /* ActionStar panels */
 571         { .driver_data = MT_CLS_DEFAULT,
 572                 HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 573                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 574
 575         /* Cando panels */
 576         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 577                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 578                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 579         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 580                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 581                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 582         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 583                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 584                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 585         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 586                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 587                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 588
 589         /* CVTouch panels */
 590         { .driver_data = MT_CLS_DEFAULT,
 591                 HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
 592                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
 593
 594         /* Cypress panel */
 595         { .driver_data = MT_CLS_CYPRESS,
 596                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 597                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 598
 599         /* Elo TouchSystems IntelliTouch Plus panel */
 600         { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
 601                 HID_USB_DEVICE(USB_VENDOR_ID_ELO,
 602                         USB_DEVICE_ID_ELO_TS2515) },
 603
 604         /* GeneralTouch panel */
 605         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 606                 HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 607                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
 608
 609         /* GoodTouch panels */
 610         { .driver_data = MT_CLS_DEFAULT,
 611                 HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
 612                         USB_DEVICE_ID_GOODTOUCH_000f) },
 613
 614         /* Ilitek dual touch panel */
 615         {  .driver_data = MT_CLS_DEFAULT,
 616                 HID_USB_DEVICE(USB_VENDOR_ID_ILITEK,
 617                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
 618
 619         /* IRTOUCH panels */
 620         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 621                 HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
 622                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
 623
 624         /* Lumio panels */
 625         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 626                 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 627                         USB_DEVICE_ID_CRYSTALTOUCH) },
 628
 629         /* MosArt panels */
 630         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 631                 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
 632                         USB_DEVICE_ID_ASUS_T91MT)},
 633         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 634                 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
 635                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
 636         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 637                 HID_USB_DEVICE(USB_VENDOR_ID_TURBOX,
 638                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
 639
 640         /* PenMount panels */
 641         { .driver_data = MT_CLS_CONFIDENCE,
 642                 HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
 643                         USB_DEVICE_ID_PENMOUNT_PCI) },
 644
 645         /* PixCir-based panels */
 646         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 647                 HID_USB_DEVICE(USB_VENDOR_ID_HANVON,
 648                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
 649         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 650                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 651                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
 652
 653         /* Resistive eGalax devices */
 654         {  .driver_data = MT_CLS_EGALAX,
 655                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 656                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
 657         {  .driver_data = MT_CLS_EGALAX,
 658                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 659                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
 660
 661         /* Capacitive eGalax devices */
 662         {  .driver_data = MT_CLS_EGALAX,
 663                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 664                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
 665         {  .driver_data = MT_CLS_EGALAX,
 666                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 667                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
 668         {  .driver_data = MT_CLS_EGALAX,
 669                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 670                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
 671
 672         /* Stantum panels */
 673         { .driver_data = MT_CLS_CONFIDENCE,
 674                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 675                         USB_DEVICE_ID_MTP)},
 676         { .driver_data = MT_CLS_CONFIDENCE,
 677                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 678                         USB_DEVICE_ID_MTP_STM)},
 679         { .driver_data = MT_CLS_CONFIDENCE,
 680                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 681                         USB_DEVICE_ID_MTP_SITRONIX)},
 682
 683         /* Touch International panels */
 684         { .driver_data = MT_CLS_DEFAULT,
 685                 HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
 686                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
 687
 688         /* Unitec panels */
 689         { .driver_data = MT_CLS_DEFAULT,
 690                 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
 691                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
 692         { .driver_data = MT_CLS_DEFAULT,
 693                 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
 694                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
 695
 696         { }
 697 };
 698 MODULE_DEVICE_TABLE(hid, mt_devices);
 699
 700 static const struct hid_usage_id mt_grabbed_usages[] = {
 701         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
 702         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
 703 };
 704
 705 static struct hid_driver mt_driver = {
 706         .name = "hid-multitouch",
 707         .id_table = mt_devices,
 708         .probe = mt_probe,
 709         .remove = mt_remove,
 710         .input_mapping = mt_input_mapping,
 711         .input_mapped = mt_input_mapped,
 712         .feature_mapping = mt_feature_mapping,
 713         .usage_table = mt_grabbed_usages,
 714         .event = mt_event,
 715 #ifdef CONFIG_PM
 716         .reset_resume = mt_reset_resume,
 717 #endif
 718 };
 719
 720 static int __init mt_init(void)
 721 {
 722         return hid_register_driver(&mt_driver);
 723 }
 724
 725 static void __exit mt_exit(void)
 726 {
 727         hid_unregister_driver(&mt_driver);
 728 }
 729
 730 module_init(mt_init);
 731 module_exit(mt_exit);