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         int last_mt_collection; /* last known mt-related collection */
  68         __s8 inputmode;         /* InputMode HID feature, -1 if non-existent */
  69         __u8 num_received;      /* how many contacts we received */
  70         __u8 num_expected;      /* expected last contact index */
  71         __u8 maxcontacts;
  72         bool curvalid;          /* is the current contact valid? */
  73         struct mt_slot *slots;
  74 };
  75
  76 struct mt_class {
  77         __s32 name;     /* MT_CLS */
  78         __s32 quirks;
  79         __s32 sn_move;  /* Signal/noise ratio for move events */
  80         __s32 sn_width; /* Signal/noise ratio for width events */
  81         __s32 sn_height;        /* Signal/noise ratio for height events */
  82         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
  83         __u8 maxcontacts;
  84 };
  85
  86 /* classes of device behavior */
  87 #define MT_CLS_DEFAULT                          0x0001
  88
  89 #define MT_CLS_CONFIDENCE                       0x0002
  90 #define MT_CLS_CONFIDENCE_MINUS_ONE             0x0003
  91 #define MT_CLS_DUAL_INRANGE_CONTACTID           0x0004
  92 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       0x0005
  93 #define MT_CLS_DUAL_NSMU_CONTACTID              0x0006
  94
  95 /* vendor specific classes */
  96 #define MT_CLS_3M                               0x0101
  97 #define MT_CLS_CYPRESS                          0x0102
  98 #define MT_CLS_EGALAX                           0x0103
  99
 100 #define MT_DEFAULT_MAXCONTACT   10
 101
 102 /*
 103  * these device-dependent functions determine what slot corresponds
 104  * to a valid contact that was just read.
 105  */
 106
 107 static int cypress_compute_slot(struct mt_device *td)
 108 {
 109         if (td->curdata.contactid != 0 || td->num_received == 0)
 110                 return td->curdata.contactid;
 111         else
 112                 return -1;
 113 }
 114
 115 static int find_slot_from_contactid(struct mt_device *td)
 116 {
 117         int i;
 118         for (i = 0; i < td->maxcontacts; ++i) {
 119                 if (td->slots[i].contactid == td->curdata.contactid &&
 120                         td->slots[i].touch_state)
 121                         return i;
 122         }
 123         for (i = 0; i < td->maxcontacts; ++i) {
 124                 if (!td->slots[i].seen_in_this_frame &&
 125                         !td->slots[i].touch_state)
 126                         return i;
 127         }
 128         /* should not occurs. If this happens that means
 129          * that the device sent more touches that it says
 130          * in the report descriptor. It is ignored then. */
 131         return -1;
 132 }
 133
 134 struct mt_class mt_classes[] = {
 135         { .name = MT_CLS_DEFAULT,
 136                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 137         { .name = MT_CLS_CONFIDENCE,
 138                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 139         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 140                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 141                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 142         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 143                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 144                         MT_QUIRK_SLOT_IS_CONTACTID,
 145                 .maxcontacts = 2 },
 146         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 147                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 148                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 149                 .maxcontacts = 2 },
 150         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
 151                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 152                         MT_QUIRK_SLOT_IS_CONTACTID,
 153                 .maxcontacts = 2 },
 154
 155         /*
 156          * vendor specific classes
 157          */
 158         { .name = MT_CLS_3M,
 159                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 160                         MT_QUIRK_SLOT_IS_CONTACTID,
 161                 .sn_move = 2048,
 162                 .sn_width = 128,
 163                 .sn_height = 128 },
 164         { .name = MT_CLS_CYPRESS,
 165                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 166                         MT_QUIRK_CYPRESS,
 167                 .maxcontacts = 10 },
 168         { .name = MT_CLS_EGALAX,
 169                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 170                         MT_QUIRK_VALID_IS_INRANGE |
 171                         MT_QUIRK_EGALAX_XYZ_FIXUP,
 172                 .maxcontacts = 2,
 173                 .sn_move = 4096,
 174                 .sn_pressure = 32,
 175         },
 176
 177         { }
 178 };
 179
 180 static void mt_feature_mapping(struct hid_device *hdev,
 181                 struct hid_field *field, struct hid_usage *usage)
 182 {
 183         struct mt_device *td = hid_get_drvdata(hdev);
 184
 185         switch (usage->hid) {
 186         case HID_DG_INPUTMODE:
 187                 td->inputmode = field->report->id;
 188                 break;
 189         case HID_DG_CONTACTMAX:
 190                 td->maxcontacts = field->value[0];
 191                 if (td->mtclass->maxcontacts)
 192                         /* check if the maxcontacts is given by the class */
 193                         td->maxcontacts = td->mtclass->maxcontacts;
 194
 195                 break;
 196         }
 197 }
 198
 199 static void set_abs(struct input_dev *input, unsigned int code,
 200                 struct hid_field *field, int snratio)
 201 {
 202         int fmin = field->logical_minimum;
 203         int fmax = field->logical_maximum;
 204         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 205         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 206 }
 207
 208 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 209                 struct hid_field *field, struct hid_usage *usage,
 210                 unsigned long **bit, int *max)
 211 {
 212         struct mt_device *td = hid_get_drvdata(hdev);
 213         struct mt_class *cls = td->mtclass;
 214         __s32 quirks = cls->quirks;
 215
 216         switch (usage->hid & HID_USAGE_PAGE) {
 217
 218         case HID_UP_GENDESK:
 219                 switch (usage->hid) {
 220                 case HID_GD_X:
 221                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 222                                 field->logical_maximum = 32760;
 223                         hid_map_usage(hi, usage, bit, max,
 224                                         EV_ABS, ABS_MT_POSITION_X);
 225                         set_abs(hi->input, ABS_MT_POSITION_X, field,
 226                                 cls->sn_move);
 227                         /* touchscreen emulation */
 228                         set_abs(hi->input, ABS_X, field, cls->sn_move);
 229                         if (td->last_mt_collection == usage->collection_index) {
 230                                 td->last_slot_field = usage->hid;
 231                                 td->last_field_index = field->index;
 232                         }
 233                         return 1;
 234                 case HID_GD_Y:
 235                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 236                                 field->logical_maximum = 32760;
 237                         hid_map_usage(hi, usage, bit, max,
 238                                         EV_ABS, ABS_MT_POSITION_Y);
 239                         set_abs(hi->input, ABS_MT_POSITION_Y, field,
 240                                 cls->sn_move);
 241                         /* touchscreen emulation */
 242                         set_abs(hi->input, ABS_Y, field, cls->sn_move);
 243                         if (td->last_mt_collection == usage->collection_index) {
 244                                 td->last_slot_field = usage->hid;
 245                                 td->last_field_index = field->index;
 246                         }
 247                         return 1;
 248                 }
 249                 return 0;
 250
 251         case HID_UP_DIGITIZER:
 252                 switch (usage->hid) {
 253                 case HID_DG_INRANGE:
 254                         if (td->last_mt_collection == usage->collection_index) {
 255                                 td->last_slot_field = usage->hid;
 256                                 td->last_field_index = field->index;
 257                         }
 258                         return 1;
 259                 case HID_DG_CONFIDENCE:
 260                         if (td->last_mt_collection == usage->collection_index) {
 261                                 td->last_slot_field = usage->hid;
 262                                 td->last_field_index = field->index;
 263                         }
 264                         return 1;
 265                 case HID_DG_TIPSWITCH:
 266                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 267                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 268                         if (td->last_mt_collection == usage->collection_index) {
 269                                 td->last_slot_field = usage->hid;
 270                                 td->last_field_index = field->index;
 271                         }
 272                         return 1;
 273                 case HID_DG_CONTACTID:
 274                         if (!td->maxcontacts)
 275                                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 276                         input_mt_init_slots(hi->input, td->maxcontacts);
 277                         td->last_slot_field = usage->hid;
 278                         td->last_field_index = field->index;
 279                         td->last_mt_collection = usage->collection_index;
 280                         return 1;
 281                 case HID_DG_WIDTH:
 282                         hid_map_usage(hi, usage, bit, max,
 283                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 284                         set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 285                                 cls->sn_width);
 286                         if (td->last_mt_collection == usage->collection_index) {
 287                                 td->last_slot_field = usage->hid;
 288                                 td->last_field_index = field->index;
 289                         }
 290                         return 1;
 291                 case HID_DG_HEIGHT:
 292                         hid_map_usage(hi, usage, bit, max,
 293                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 294                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 295                                 cls->sn_height);
 296                         input_set_abs_params(hi->input,
 297                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 298                         if (td->last_mt_collection == usage->collection_index) {
 299                                 td->last_slot_field = usage->hid;
 300                                 td->last_field_index = field->index;
 301                         }
 302                         return 1;
 303                 case HID_DG_TIPPRESSURE:
 304                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 305                                 field->logical_minimum = 0;
 306                         hid_map_usage(hi, usage, bit, max,
 307                                         EV_ABS, ABS_MT_PRESSURE);
 308                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 309                                 cls->sn_pressure);
 310                         /* touchscreen emulation */
 311                         set_abs(hi->input, ABS_PRESSURE, field,
 312                                 cls->sn_pressure);
 313                         if (td->last_mt_collection == usage->collection_index) {
 314                                 td->last_slot_field = usage->hid;
 315                                 td->last_field_index = field->index;
 316                         }
 317                         return 1;
 318                 case HID_DG_CONTACTCOUNT:
 319                         if (td->last_mt_collection == usage->collection_index)
 320                                 td->last_field_index = field->index;
 321                         return 1;
 322                 case HID_DG_CONTACTMAX:
 323                         /* we don't set td->last_slot_field as contactcount and
 324                          * contact max are global to the report */
 325                         if (td->last_mt_collection == usage->collection_index)
 326                                 td->last_field_index = field->index;
 327                         return -1;
 328                 }
 329                 /* let hid-input decide for the others */
 330                 return 0;
 331
 332         case 0xff000000:
 333                 /* we do not want to map these: no input-oriented meaning */
 334                 return -1;
 335         }
 336
 337         return 0;
 338 }
 339
 340 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 341                 struct hid_field *field, struct hid_usage *usage,
 342                 unsigned long **bit, int *max)
 343 {
 344         if (usage->type == EV_KEY || usage->type == EV_ABS)
 345                 set_bit(usage->type, hi->input->evbit);
 346
 347         return -1;
 348 }
 349
 350 static int mt_compute_slot(struct mt_device *td)
 351 {
 352         __s32 quirks = td->mtclass->quirks;
 353
 354         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 355                 return td->curdata.contactid;
 356
 357         if (quirks & MT_QUIRK_CYPRESS)
 358                 return cypress_compute_slot(td);
 359
 360         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 361                 return td->num_received;
 362
 363         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 364                 return td->curdata.contactid - 1;
 365
 366         return find_slot_from_contactid(td);
 367 }
 368
 369 /*
 370  * this function is called when a whole contact has been processed,
 371  * so that it can assign it to a slot and store the data there
 372  */
 373 static void mt_complete_slot(struct mt_device *td)
 374 {
 375         td->curdata.seen_in_this_frame = true;
 376         if (td->curvalid) {
 377                 int slotnum = mt_compute_slot(td);
 378
 379                 if (slotnum >= 0 && slotnum < td->maxcontacts)
 380                         td->slots[slotnum] = td->curdata;
 381         }
 382         td->num_received++;
 383 }
 384
 385
 386 /*
 387  * this function is called when a whole packet has been received and processed,
 388  * so that it can decide what to send to the input layer.
 389  */
 390 static void mt_emit_event(struct mt_device *td, struct input_dev *input)
 391 {
 392         int i;
 393
 394         for (i = 0; i < td->maxcontacts; ++i) {
 395                 struct mt_slot *s = &(td->slots[i]);
 396                 if ((td->mtclass->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
 397                         !s->seen_in_this_frame) {
 398                         s->touch_state = false;
 399                 }
 400
 401                 input_mt_slot(input, i);
 402                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 403                         s->touch_state);
 404                 if (s->touch_state) {
 405                         /* this finger is on the screen */
 406                         int wide = (s->w > s->h);
 407                         /* divided by two to match visual scale of touch */
 408                         int major = max(s->w, s->h) >> 1;
 409                         int minor = min(s->w, s->h) >> 1;
 410
 411                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 412                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 413                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 414                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 415                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 416                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 417                 }
 418                 s->seen_in_this_frame = false;
 419
 420         }
 421
 422         input_mt_report_pointer_emulation(input, true);
 423         input_sync(input);
 424         td->num_received = 0;
 425 }
 426
 427
 428
 429 static int mt_event(struct hid_device *hid, struct hid_field *field,
 430                                 struct hid_usage *usage, __s32 value)
 431 {
 432         struct mt_device *td = hid_get_drvdata(hid);
 433         __s32 quirks = td->mtclass->quirks;
 434
 435         if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
 436                 switch (usage->hid) {
 437                 case HID_DG_INRANGE:
 438                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 439                                 td->curvalid = value;
 440                         break;
 441                 case HID_DG_TIPSWITCH:
 442                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 443                                 td->curvalid = value;
 444                         td->curdata.touch_state = value;
 445                         break;
 446                 case HID_DG_CONFIDENCE:
 447                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 448                                 td->curvalid = value;
 449                         break;
 450                 case HID_DG_CONTACTID:
 451                         td->curdata.contactid = value;
 452                         break;
 453                 case HID_DG_TIPPRESSURE:
 454                         td->curdata.p = value;
 455                         break;
 456                 case HID_GD_X:
 457                         td->curdata.x = value;
 458                         break;
 459                 case HID_GD_Y:
 460                         td->curdata.y = value;
 461                         break;
 462                 case HID_DG_WIDTH:
 463                         td->curdata.w = value;
 464                         break;
 465                 case HID_DG_HEIGHT:
 466                         td->curdata.h = value;
 467                         break;
 468                 case HID_DG_CONTACTCOUNT:
 469                         /*
 470                          * Includes multi-packet support where subsequent
 471                          * packets are sent with zero contactcount.
 472                          */
 473                         if (value)
 474                                 td->num_expected = value;
 475                         break;
 476
 477                 default:
 478                         /* fallback to the generic hidinput handling */
 479                         return 0;
 480                 }
 481
 482                 if (usage->hid == td->last_slot_field) {
 483                         mt_complete_slot(td);
 484                 }
 485
 486                 if (field->index == td->last_field_index
 487                         && td->num_received >= td->num_expected)
 488                         mt_emit_event(td, field->hidinput->input);
 489
 490         }
 491
 492         /* we have handled the hidinput part, now remains hiddev */
 493         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 494                 hid->hiddev_hid_event(hid, field, usage, value);
 495
 496         return 1;
 497 }
 498
 499 static void mt_set_input_mode(struct hid_device *hdev)
 500 {
 501         struct mt_device *td = hid_get_drvdata(hdev);
 502         struct hid_report *r;
 503         struct hid_report_enum *re;
 504
 505         if (td->inputmode < 0)
 506                 return;
 507
 508         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 509         r = re->report_id_hash[td->inputmode];
 510         if (r) {
 511                 r->field[0]->value[0] = 0x02;
 512                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
 513         }
 514 }
 515
 516 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 517 {
 518         int ret, i;
 519         struct mt_device *td;
 520         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 521
 522         for (i = 0; mt_classes[i].name ; i++) {
 523                 if (id->driver_data == mt_classes[i].name) {
 524                         mtclass = &(mt_classes[i]);
 525                         break;
 526                 }
 527         }
 528
 529         /* This allows the driver to correctly support devices
 530          * that emit events over several HID messages.
 531          */
 532         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 533
 534         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 535         if (!td) {
 536                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 537                 return -ENOMEM;
 538         }
 539         td->mtclass = mtclass;
 540         td->inputmode = -1;
 541         td->last_mt_collection = -1;
 542         hid_set_drvdata(hdev, td);
 543
 544         ret = hid_parse(hdev);
 545         if (ret != 0)
 546                 goto fail;
 547
 548         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 549         if (ret)
 550                 goto fail;
 551
 552         td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
 553                                 GFP_KERNEL);
 554         if (!td->slots) {
 555                 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
 556                 hid_hw_stop(hdev);
 557                 ret = -ENOMEM;
 558                 goto fail;
 559         }
 560
 561         mt_set_input_mode(hdev);
 562
 563         return 0;
 564
 565 fail:
 566         kfree(td);
 567         return ret;
 568 }
 569
 570 #ifdef CONFIG_PM
 571 static int mt_reset_resume(struct hid_device *hdev)
 572 {
 573         mt_set_input_mode(hdev);
 574         return 0;
 575 }
 576 #endif
 577
 578 static void mt_remove(struct hid_device *hdev)
 579 {
 580         struct mt_device *td = hid_get_drvdata(hdev);
 581         hid_hw_stop(hdev);
 582         kfree(td->slots);
 583         kfree(td);
 584         hid_set_drvdata(hdev, NULL);
 585 }
 586
 587 static const struct hid_device_id mt_devices[] = {
 588
 589         /* 3M panels */
 590         { .driver_data = MT_CLS_3M,
 591                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
 592                         USB_DEVICE_ID_3M1968) },
 593         { .driver_data = MT_CLS_3M,
 594                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
 595                         USB_DEVICE_ID_3M2256) },
 596
 597         /* ActionStar panels */
 598         { .driver_data = MT_CLS_DEFAULT,
 599                 HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 600                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 601
 602         /* Cando panels */
 603         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 604                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 605                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 606         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 607                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 608                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 609         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 610                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 611                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 612         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 613                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 614                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 615
 616         /* Chunghwa Telecom touch panels */
 617         {  .driver_data = MT_CLS_DEFAULT,
 618                 HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
 619                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
 620
 621         /* CVTouch panels */
 622         { .driver_data = MT_CLS_DEFAULT,
 623                 HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
 624                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
 625
 626         /* Cypress panel */
 627         { .driver_data = MT_CLS_CYPRESS,
 628                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 629                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 630
 631         /* eGalax devices (resistive) */
 632         {  .driver_data = MT_CLS_EGALAX,
 633                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 634                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
 635         {  .driver_data = MT_CLS_EGALAX,
 636                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 637                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
 638
 639         /* eGalax devices (capacitive) */
 640         {  .driver_data = MT_CLS_EGALAX,
 641                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 642                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
 643         {  .driver_data = MT_CLS_EGALAX,
 644                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 645                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
 646         {  .driver_data = MT_CLS_EGALAX,
 647                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 648                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
 649
 650         /* Elo TouchSystems IntelliTouch Plus panel */
 651         { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
 652                 HID_USB_DEVICE(USB_VENDOR_ID_ELO,
 653                         USB_DEVICE_ID_ELO_TS2515) },
 654
 655         /* GeneralTouch panel */
 656         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 657                 HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 658                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
 659
 660         /* GoodTouch panels */
 661         { .driver_data = MT_CLS_DEFAULT,
 662                 HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
 663                         USB_DEVICE_ID_GOODTOUCH_000f) },
 664
 665         /* Ilitek dual touch panel */
 666         {  .driver_data = MT_CLS_DEFAULT,
 667                 HID_USB_DEVICE(USB_VENDOR_ID_ILITEK,
 668                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
 669
 670         /* IRTOUCH panels */
 671         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 672                 HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
 673                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
 674
 675         /* Lumio panels */
 676         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 677                 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 678                         USB_DEVICE_ID_CRYSTALTOUCH) },
 679         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 680                 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 681                         USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
 682
 683         /* MosArt panels */
 684         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 685                 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
 686                         USB_DEVICE_ID_ASUS_T91MT)},
 687         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 688                 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
 689                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
 690         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 691                 HID_USB_DEVICE(USB_VENDOR_ID_TURBOX,
 692                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
 693
 694         /* PenMount panels */
 695         { .driver_data = MT_CLS_CONFIDENCE,
 696                 HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
 697                         USB_DEVICE_ID_PENMOUNT_PCI) },
 698
 699         /* PixCir-based panels */
 700         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 701                 HID_USB_DEVICE(USB_VENDOR_ID_HANVON,
 702                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
 703         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 704                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 705                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
 706
 707         /* Stantum panels */
 708         { .driver_data = MT_CLS_CONFIDENCE,
 709                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 710                         USB_DEVICE_ID_MTP)},
 711         { .driver_data = MT_CLS_CONFIDENCE,
 712                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
 713                         USB_DEVICE_ID_MTP_STM)},
 714         { .driver_data = MT_CLS_CONFIDENCE,
 715                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
 716                         USB_DEVICE_ID_MTP_SITRONIX)},
 717
 718         /* Touch International panels */
 719         { .driver_data = MT_CLS_DEFAULT,
 720                 HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
 721                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
 722
 723         /* Unitec panels */
 724         { .driver_data = MT_CLS_DEFAULT,
 725                 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
 726                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
 727         { .driver_data = MT_CLS_DEFAULT,
 728                 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
 729                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
 730         /* XAT */
 731         { .driver_data = MT_CLS_DEFAULT,
 732                 HID_USB_DEVICE(USB_VENDOR_ID_XAT,
 733                         USB_DEVICE_ID_XAT_CSR) },
 734
 735         { }
 736 };
 737 MODULE_DEVICE_TABLE(hid, mt_devices);
 738
 739 static const struct hid_usage_id mt_grabbed_usages[] = {
 740         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
 741         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
 742 };
 743
 744 static struct hid_driver mt_driver = {
 745         .name = "hid-multitouch",
 746         .id_table = mt_devices,
 747         .probe = mt_probe,
 748         .remove = mt_remove,
 749         .input_mapping = mt_input_mapping,
 750         .input_mapped = mt_input_mapped,
 751         .feature_mapping = mt_feature_mapping,
 752         .usage_table = mt_grabbed_usages,
 753         .event = mt_event,
 754 #ifdef CONFIG_PM
 755         .reset_resume = mt_reset_resume,
 756 #endif
 757 };
 758
 759 static int __init mt_init(void)
 760 {
 761         return hid_register_driver(&mt_driver);
 762 }
 763
 764 static void __exit mt_exit(void)
 765 {
 766         hid_unregister_driver(&mt_driver);
 767 }
 768
 769 module_init(mt_init);
 770 module_exit(mt_exit);