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_STANTUM                          6
  92 #define MT_CLS_3M                               7
  93 #define MT_CLS_CONFIDENCE                       8
  94 #define MT_CLS_CONFIDENCE_MINUS_ONE             9
  95 #define MT_CLS_DUAL_NSMU_CONTACTID              10
  96
  97 #define MT_DEFAULT_MAXCONTACT   10
  98
  99 /*
 100  * these device-dependent functions determine what slot corresponds
 101  * to a valid contact that was just read.
 102  */
 103
 104 static int cypress_compute_slot(struct mt_device *td)
 105 {
 106         if (td->curdata.contactid != 0 || td->num_received == 0)
 107                 return td->curdata.contactid;
 108         else
 109                 return -1;
 110 }
 111
 112 static int find_slot_from_contactid(struct mt_device *td)
 113 {
 114         int i;
 115         for (i = 0; i < td->maxcontacts; ++i) {
 116                 if (td->slots[i].contactid == td->curdata.contactid &&
 117                         td->slots[i].touch_state)
 118                         return i;
 119         }
 120         for (i = 0; i < td->maxcontacts; ++i) {
 121                 if (!td->slots[i].seen_in_this_frame &&
 122                         !td->slots[i].touch_state)
 123                         return i;
 124         }
 125         /* should not occurs. If this happens that means
 126          * that the device sent more touches that it says
 127          * in the report descriptor. It is ignored then. */
 128         return -1;
 129 }
 130
 131 struct mt_class mt_classes[] = {
 132         { .name = MT_CLS_DEFAULT,
 133                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 134         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 135                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 136                         MT_QUIRK_SLOT_IS_CONTACTID,
 137                 .maxcontacts = 2 },
 138         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 139                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 140                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 141                 .maxcontacts = 2 },
 142         { .name = MT_CLS_CYPRESS,
 143                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 144                         MT_QUIRK_CYPRESS,
 145                 .maxcontacts = 10 },
 146         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 147                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 148                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 149         { .name = MT_CLS_EGALAX,
 150                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 151                         MT_QUIRK_VALID_IS_INRANGE |
 152                         MT_QUIRK_EGALAX_XYZ_FIXUP,
 153                 .maxcontacts = 2,
 154                 .sn_move = 4096,
 155                 .sn_pressure = 32,
 156         },
 157         { .name = MT_CLS_STANTUM,
 158                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 159         { .name = MT_CLS_3M,
 160                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 161                         MT_QUIRK_SLOT_IS_CONTACTID,
 162                 .sn_move = 2048,
 163                 .sn_width = 128,
 164                 .sn_height = 128 },
 165         { .name = MT_CLS_CONFIDENCE,
 166                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 167         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
 168                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 169                         MT_QUIRK_SLOT_IS_CONTACTID,
 170                 .maxcontacts = 2 },
 171
 172         { }
 173 };
 174
 175 static void mt_feature_mapping(struct hid_device *hdev,
 176                 struct hid_field *field, struct hid_usage *usage)
 177 {
 178         struct mt_device *td = hid_get_drvdata(hdev);
 179
 180         switch (usage->hid) {
 181         case HID_DG_INPUTMODE:
 182                 td->inputmode = field->report->id;
 183                 break;
 184         case HID_DG_CONTACTMAX:
 185                 td->maxcontacts = field->value[0];
 186                 if (td->mtclass->maxcontacts)
 187                         /* check if the maxcontacts is given by the class */
 188                         td->maxcontacts = td->mtclass->maxcontacts;
 189
 190                 break;
 191         }
 192 }
 193
 194 static void set_abs(struct input_dev *input, unsigned int code,
 195                 struct hid_field *field, int snratio)
 196 {
 197         int fmin = field->logical_minimum;
 198         int fmax = field->logical_maximum;
 199         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 200         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 201 }
 202
 203 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 204                 struct hid_field *field, struct hid_usage *usage,
 205                 unsigned long **bit, int *max)
 206 {
 207         struct mt_device *td = hid_get_drvdata(hdev);
 208         struct mt_class *cls = td->mtclass;
 209         __s32 quirks = cls->quirks;
 210
 211         switch (usage->hid & HID_USAGE_PAGE) {
 212
 213         case HID_UP_GENDESK:
 214                 switch (usage->hid) {
 215                 case HID_GD_X:
 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_X);
 220                         set_abs(hi->input, ABS_MT_POSITION_X, field,
 221                                 cls->sn_move);
 222                         /* touchscreen emulation */
 223                         set_abs(hi->input, ABS_X, field, cls->sn_move);
 224                         td->last_slot_field = usage->hid;
 225                         td->last_field_index = field->index;
 226                         return 1;
 227                 case HID_GD_Y:
 228                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 229                                 field->logical_maximum = 32760;
 230                         hid_map_usage(hi, usage, bit, max,
 231                                         EV_ABS, ABS_MT_POSITION_Y);
 232                         set_abs(hi->input, ABS_MT_POSITION_Y, field,
 233                                 cls->sn_move);
 234                         /* touchscreen emulation */
 235                         set_abs(hi->input, ABS_Y, field, cls->sn_move);
 236                         td->last_slot_field = usage->hid;
 237                         td->last_field_index = field->index;
 238                         return 1;
 239                 }
 240                 return 0;
 241
 242         case HID_UP_DIGITIZER:
 243                 switch (usage->hid) {
 244                 case HID_DG_INRANGE:
 245                         td->last_slot_field = usage->hid;
 246                         td->last_field_index = field->index;
 247                         return 1;
 248                 case HID_DG_CONFIDENCE:
 249                         td->last_slot_field = usage->hid;
 250                         td->last_field_index = field->index;
 251                         return 1;
 252                 case HID_DG_TIPSWITCH:
 253                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 254                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 255                         td->last_slot_field = usage->hid;
 256                         td->last_field_index = field->index;
 257                         return 1;
 258                 case HID_DG_CONTACTID:
 259                         input_mt_init_slots(hi->input, td->maxcontacts);
 260                         td->last_slot_field = usage->hid;
 261                         td->last_field_index = field->index;
 262                         return 1;
 263                 case HID_DG_WIDTH:
 264                         hid_map_usage(hi, usage, bit, max,
 265                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 266                         set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 267                                 cls->sn_width);
 268                         td->last_slot_field = usage->hid;
 269                         td->last_field_index = field->index;
 270                         return 1;
 271                 case HID_DG_HEIGHT:
 272                         hid_map_usage(hi, usage, bit, max,
 273                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 274                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 275                                 cls->sn_height);
 276                         input_set_abs_params(hi->input,
 277                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 278                         td->last_slot_field = usage->hid;
 279                         td->last_field_index = field->index;
 280                         return 1;
 281                 case HID_DG_TIPPRESSURE:
 282                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 283                                 field->logical_minimum = 0;
 284                         hid_map_usage(hi, usage, bit, max,
 285                                         EV_ABS, ABS_MT_PRESSURE);
 286                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 287                                 cls->sn_pressure);
 288                         /* touchscreen emulation */
 289                         set_abs(hi->input, ABS_PRESSURE, field,
 290                                 cls->sn_pressure);
 291                         td->last_slot_field = usage->hid;
 292                         td->last_field_index = field->index;
 293                         return 1;
 294                 case HID_DG_CONTACTCOUNT:
 295                         td->last_field_index = field->index;
 296                         return 1;
 297                 case HID_DG_CONTACTMAX:
 298                         /* we don't set td->last_slot_field as contactcount and
 299                          * contact max are global to the report */
 300                         td->last_field_index = field->index;
 301                         return -1;
 302                 }
 303                 /* let hid-input decide for the others */
 304                 return 0;
 305
 306         case 0xff000000:
 307                 /* we do not want to map these: no input-oriented meaning */
 308                 return -1;
 309         }
 310
 311         return 0;
 312 }
 313
 314 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 315                 struct hid_field *field, struct hid_usage *usage,
 316                 unsigned long **bit, int *max)
 317 {
 318         if (usage->type == EV_KEY || usage->type == EV_ABS)
 319                 set_bit(usage->type, hi->input->evbit);
 320
 321         return -1;
 322 }
 323
 324 static int mt_compute_slot(struct mt_device *td)
 325 {
 326         __s32 quirks = td->mtclass->quirks;
 327
 328         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 329                 return td->curdata.contactid;
 330
 331         if (quirks & MT_QUIRK_CYPRESS)
 332                 return cypress_compute_slot(td);
 333
 334         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 335                 return td->num_received;
 336
 337         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 338                 return td->curdata.contactid - 1;
 339
 340         return find_slot_from_contactid(td);
 341 }
 342
 343 /*
 344  * this function is called when a whole contact has been processed,
 345  * so that it can assign it to a slot and store the data there
 346  */
 347 static void mt_complete_slot(struct mt_device *td)
 348 {
 349         td->curdata.seen_in_this_frame = true;
 350         if (td->curvalid) {
 351                 int slotnum = mt_compute_slot(td);
 352
 353                 if (slotnum >= 0 && slotnum < td->maxcontacts)
 354                         td->slots[slotnum] = td->curdata;
 355         }
 356         td->num_received++;
 357 }
 358
 359
 360 /*
 361  * this function is called when a whole packet has been received and processed,
 362  * so that it can decide what to send to the input layer.
 363  */
 364 static void mt_emit_event(struct mt_device *td, struct input_dev *input)
 365 {
 366         int i;
 367
 368         for (i = 0; i < td->maxcontacts; ++i) {
 369                 struct mt_slot *s = &(td->slots[i]);
 370                 if ((td->mtclass->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
 371                         !s->seen_in_this_frame) {
 372                         s->touch_state = false;
 373                 }
 374
 375                 input_mt_slot(input, i);
 376                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 377                         s->touch_state);
 378                 if (s->touch_state) {
 379                         /* this finger is on the screen */
 380                         int wide = (s->w > s->h);
 381                         /* divided by two to match visual scale of touch */
 382                         int major = max(s->w, s->h) >> 1;
 383                         int minor = min(s->w, s->h) >> 1;
 384
 385                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 386                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 387                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 388                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 389                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 390                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 391                 }
 392                 s->seen_in_this_frame = false;
 393
 394         }
 395
 396         input_mt_report_pointer_emulation(input, true);
 397         input_sync(input);
 398         td->num_received = 0;
 399 }
 400
 401
 402
 403 static int mt_event(struct hid_device *hid, struct hid_field *field,
 404                                 struct hid_usage *usage, __s32 value)
 405 {
 406         struct mt_device *td = hid_get_drvdata(hid);
 407         __s32 quirks = td->mtclass->quirks;
 408
 409         if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
 410                 switch (usage->hid) {
 411                 case HID_DG_INRANGE:
 412                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 413                                 td->curvalid = value;
 414                         break;
 415                 case HID_DG_TIPSWITCH:
 416                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 417                                 td->curvalid = value;
 418                         td->curdata.touch_state = value;
 419                         break;
 420                 case HID_DG_CONFIDENCE:
 421                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 422                                 td->curvalid = value;
 423                         break;
 424                 case HID_DG_CONTACTID:
 425                         td->curdata.contactid = value;
 426                         break;
 427                 case HID_DG_TIPPRESSURE:
 428                         td->curdata.p = value;
 429                         break;
 430                 case HID_GD_X:
 431                         td->curdata.x = value;
 432                         break;
 433                 case HID_GD_Y:
 434                         td->curdata.y = value;
 435                         break;
 436                 case HID_DG_WIDTH:
 437                         td->curdata.w = value;
 438                         break;
 439                 case HID_DG_HEIGHT:
 440                         td->curdata.h = value;
 441                         break;
 442                 case HID_DG_CONTACTCOUNT:
 443                         /*
 444                          * Includes multi-packet support where subsequent
 445                          * packets are sent with zero contactcount.
 446                          */
 447                         if (value)
 448                                 td->num_expected = value;
 449                         break;
 450
 451                 default:
 452                         /* fallback to the generic hidinput handling */
 453                         return 0;
 454                 }
 455
 456                 if (usage->hid == td->last_slot_field) {
 457                         mt_complete_slot(td);
 458                 }
 459
 460                 if (field->index == td->last_field_index
 461                         && td->num_received >= td->num_expected)
 462                         mt_emit_event(td, field->hidinput->input);
 463
 464         }
 465
 466         /* we have handled the hidinput part, now remains hiddev */
 467         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 468                 hid->hiddev_hid_event(hid, field, usage, value);
 469
 470         return 1;
 471 }
 472
 473 static void mt_set_input_mode(struct hid_device *hdev)
 474 {
 475         struct mt_device *td = hid_get_drvdata(hdev);
 476         struct hid_report *r;
 477         struct hid_report_enum *re;
 478
 479         if (td->inputmode < 0)
 480                 return;
 481
 482         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 483         r = re->report_id_hash[td->inputmode];
 484         if (r) {
 485                 r->field[0]->value[0] = 0x02;
 486                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
 487         }
 488 }
 489
 490 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 491 {
 492         int ret, i;
 493         struct mt_device *td;
 494         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 495
 496         for (i = 0; mt_classes[i].name ; i++) {
 497                 if (id->driver_data == mt_classes[i].name) {
 498                         mtclass = &(mt_classes[i]);
 499                         break;
 500                 }
 501         }
 502
 503         /* This allows the driver to correctly support devices
 504          * that emit events over several HID messages.
 505          */
 506         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 507
 508         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 509         if (!td) {
 510                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 511                 return -ENOMEM;
 512         }
 513         td->mtclass = mtclass;
 514         td->inputmode = -1;
 515         hid_set_drvdata(hdev, td);
 516
 517         ret = hid_parse(hdev);
 518         if (ret != 0)
 519                 goto fail;
 520
 521         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 522         if (ret)
 523                 goto fail;
 524
 525         if (!td->maxcontacts)
 526                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 527
 528         td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
 529                                 GFP_KERNEL);
 530         if (!td->slots) {
 531                 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
 532                 hid_hw_stop(hdev);
 533                 ret = -ENOMEM;
 534                 goto fail;
 535         }
 536
 537         mt_set_input_mode(hdev);
 538
 539         return 0;
 540
 541 fail:
 542         kfree(td);
 543         return ret;
 544 }
 545
 546 #ifdef CONFIG_PM
 547 static int mt_reset_resume(struct hid_device *hdev)
 548 {
 549         mt_set_input_mode(hdev);
 550         return 0;
 551 }
 552 #endif
 553
 554 static void mt_remove(struct hid_device *hdev)
 555 {
 556         struct mt_device *td = hid_get_drvdata(hdev);
 557         hid_hw_stop(hdev);
 558         kfree(td->slots);
 559         kfree(td);
 560         hid_set_drvdata(hdev, NULL);
 561 }
 562
 563 static const struct hid_device_id mt_devices[] = {
 564
 565         /* 3M panels */
 566         { .driver_data = MT_CLS_3M,
 567                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
 568                         USB_DEVICE_ID_3M1968) },
 569         { .driver_data = MT_CLS_3M,
 570                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
 571                         USB_DEVICE_ID_3M2256) },
 572
 573         /* ActionStar panels */
 574         { .driver_data = MT_CLS_DEFAULT,
 575                 HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 576                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 577
 578         /* Cando panels */
 579         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 580                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 581                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 582         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 583                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 584                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 585         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 586                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 587                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 588         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 589                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 590                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 591
 592         /* CVTouch panels */
 593         { .driver_data = MT_CLS_DEFAULT,
 594                 HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
 595                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
 596
 597         /* Cypress panel */
 598         { .driver_data = MT_CLS_CYPRESS,
 599                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 600                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 601
 602         /* Elo TouchSystems IntelliTouch Plus panel */
 603         { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
 604                 HID_USB_DEVICE(USB_VENDOR_ID_ELO,
 605                         USB_DEVICE_ID_ELO_TS2515) },
 606
 607         /* GeneralTouch panel */
 608         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 609                 HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 610                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
 611
 612         /* Ilitek dual touch panel */
 613         {  .driver_data = MT_CLS_DEFAULT,
 614                 HID_USB_DEVICE(USB_VENDOR_ID_ILITEK,
 615                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
 616
 617         /* IRTOUCH panels */
 618         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 619                 HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
 620                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
 621
 622         /* Lumio panels */
 623         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 624                 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 625                         USB_DEVICE_ID_CRYSTALTOUCH) },
 626
 627         /* MosArt panels */
 628         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 629                 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
 630                         USB_DEVICE_ID_ASUS_T91MT)},
 631         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 632                 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
 633                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
 634         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 635                 HID_USB_DEVICE(USB_VENDOR_ID_TURBOX,
 636                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
 637
 638         /* PenMount panels */
 639         { .driver_data = MT_CLS_CONFIDENCE,
 640                 HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
 641                         USB_DEVICE_ID_PENMOUNT_PCI) },
 642
 643         /* PixCir-based panels */
 644         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 645                 HID_USB_DEVICE(USB_VENDOR_ID_HANVON,
 646                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
 647         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 648                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 649                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
 650
 651         /* Resistive eGalax devices */
 652         {  .driver_data = MT_CLS_EGALAX,
 653                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 654                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
 655         {  .driver_data = MT_CLS_EGALAX,
 656                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 657                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
 658
 659         /* Capacitive eGalax devices */
 660         {  .driver_data = MT_CLS_EGALAX,
 661                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 662                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
 663         {  .driver_data = MT_CLS_EGALAX,
 664                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 665                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
 666         {  .driver_data = MT_CLS_EGALAX,
 667                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 668                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
 669
 670         /* Stantum panels */
 671         { .driver_data = MT_CLS_STANTUM,
 672                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 673                         USB_DEVICE_ID_MTP)},
 674         { .driver_data = MT_CLS_STANTUM,
 675                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 676                         USB_DEVICE_ID_MTP_STM)},
 677         { .driver_data = MT_CLS_STANTUM,
 678                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 679                         USB_DEVICE_ID_MTP_SITRONIX)},
 680
 681         { }
 682 };
 683 MODULE_DEVICE_TABLE(hid, mt_devices);
 684
 685 static const struct hid_usage_id mt_grabbed_usages[] = {
 686         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
 687         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
 688 };
 689
 690 static struct hid_driver mt_driver = {
 691         .name = "hid-multitouch",
 692         .id_table = mt_devices,
 693         .probe = mt_probe,
 694         .remove = mt_remove,
 695         .input_mapping = mt_input_mapping,
 696         .input_mapped = mt_input_mapped,
 697         .feature_mapping = mt_feature_mapping,
 698         .usage_table = mt_grabbed_usages,
 699         .event = mt_event,
 700 #ifdef CONFIG_PM
 701         .reset_resume = mt_reset_resume,
 702 #endif
 703 };
 704
 705 static int __init mt_init(void)
 706 {
 707         return hid_register_driver(&mt_driver);
 708 }
 709
 710 static void __exit mt_exit(void)
 711 {
 712         hid_unregister_driver(&mt_driver);
 713 }
 714
 715 module_init(mt_init);
 716 module_exit(mt_exit);