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                         input_mt_init_slots(hi->input, td->maxcontacts);
 275                         td->last_slot_field = usage->hid;
 276                         td->last_field_index = field->index;
 277                         td->last_mt_collection = usage->collection_index;
 278                         return 1;
 279                 case HID_DG_WIDTH:
 280                         hid_map_usage(hi, usage, bit, max,
 281                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 282                         set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 283                                 cls->sn_width);
 284                         if (td->last_mt_collection == usage->collection_index) {
 285                                 td->last_slot_field = usage->hid;
 286                                 td->last_field_index = field->index;
 287                         }
 288                         return 1;
 289                 case HID_DG_HEIGHT:
 290                         hid_map_usage(hi, usage, bit, max,
 291                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 292                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 293                                 cls->sn_height);
 294                         input_set_abs_params(hi->input,
 295                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 296                         if (td->last_mt_collection == usage->collection_index) {
 297                                 td->last_slot_field = usage->hid;
 298                                 td->last_field_index = field->index;
 299                         }
 300                         return 1;
 301                 case HID_DG_TIPPRESSURE:
 302                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 303                                 field->logical_minimum = 0;
 304                         hid_map_usage(hi, usage, bit, max,
 305                                         EV_ABS, ABS_MT_PRESSURE);
 306                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 307                                 cls->sn_pressure);
 308                         /* touchscreen emulation */
 309                         set_abs(hi->input, ABS_PRESSURE, field,
 310                                 cls->sn_pressure);
 311                         if (td->last_mt_collection == usage->collection_index) {
 312                                 td->last_slot_field = usage->hid;
 313                                 td->last_field_index = field->index;
 314                         }
 315                         return 1;
 316                 case HID_DG_CONTACTCOUNT:
 317                         if (td->last_mt_collection == usage->collection_index)
 318                                 td->last_field_index = field->index;
 319                         return 1;
 320                 case HID_DG_CONTACTMAX:
 321                         /* we don't set td->last_slot_field as contactcount and
 322                          * contact max are global to the report */
 323                         if (td->last_mt_collection == usage->collection_index)
 324                                 td->last_field_index = field->index;
 325                         return -1;
 326                 }
 327                 /* let hid-input decide for the others */
 328                 return 0;
 329
 330         case 0xff000000:
 331                 /* we do not want to map these: no input-oriented meaning */
 332                 return -1;
 333         }
 334
 335         return 0;
 336 }
 337
 338 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 339                 struct hid_field *field, struct hid_usage *usage,
 340                 unsigned long **bit, int *max)
 341 {
 342         if (usage->type == EV_KEY || usage->type == EV_ABS)
 343                 set_bit(usage->type, hi->input->evbit);
 344
 345         return -1;
 346 }
 347
 348 static int mt_compute_slot(struct mt_device *td)
 349 {
 350         __s32 quirks = td->mtclass->quirks;
 351
 352         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 353                 return td->curdata.contactid;
 354
 355         if (quirks & MT_QUIRK_CYPRESS)
 356                 return cypress_compute_slot(td);
 357
 358         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 359                 return td->num_received;
 360
 361         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 362                 return td->curdata.contactid - 1;
 363
 364         return find_slot_from_contactid(td);
 365 }
 366
 367 /*
 368  * this function is called when a whole contact has been processed,
 369  * so that it can assign it to a slot and store the data there
 370  */
 371 static void mt_complete_slot(struct mt_device *td)
 372 {
 373         td->curdata.seen_in_this_frame = true;
 374         if (td->curvalid) {
 375                 int slotnum = mt_compute_slot(td);
 376
 377                 if (slotnum >= 0 && slotnum < td->maxcontacts)
 378                         td->slots[slotnum] = td->curdata;
 379         }
 380         td->num_received++;
 381 }
 382
 383
 384 /*
 385  * this function is called when a whole packet has been received and processed,
 386  * so that it can decide what to send to the input layer.
 387  */
 388 static void mt_emit_event(struct mt_device *td, struct input_dev *input)
 389 {
 390         int i;
 391
 392         for (i = 0; i < td->maxcontacts; ++i) {
 393                 struct mt_slot *s = &(td->slots[i]);
 394                 if ((td->mtclass->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
 395                         !s->seen_in_this_frame) {
 396                         s->touch_state = false;
 397                 }
 398
 399                 input_mt_slot(input, i);
 400                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 401                         s->touch_state);
 402                 if (s->touch_state) {
 403                         /* this finger is on the screen */
 404                         int wide = (s->w > s->h);
 405                         /* divided by two to match visual scale of touch */
 406                         int major = max(s->w, s->h) >> 1;
 407                         int minor = min(s->w, s->h) >> 1;
 408
 409                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 410                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 411                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 412                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 413                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 414                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 415                 }
 416                 s->seen_in_this_frame = false;
 417
 418         }
 419
 420         input_mt_report_pointer_emulation(input, true);
 421         input_sync(input);
 422         td->num_received = 0;
 423 }
 424
 425
 426
 427 static int mt_event(struct hid_device *hid, struct hid_field *field,
 428                                 struct hid_usage *usage, __s32 value)
 429 {
 430         struct mt_device *td = hid_get_drvdata(hid);
 431         __s32 quirks = td->mtclass->quirks;
 432
 433         if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
 434                 switch (usage->hid) {
 435                 case HID_DG_INRANGE:
 436                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 437                                 td->curvalid = value;
 438                         break;
 439                 case HID_DG_TIPSWITCH:
 440                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 441                                 td->curvalid = value;
 442                         td->curdata.touch_state = value;
 443                         break;
 444                 case HID_DG_CONFIDENCE:
 445                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 446                                 td->curvalid = value;
 447                         break;
 448                 case HID_DG_CONTACTID:
 449                         td->curdata.contactid = value;
 450                         break;
 451                 case HID_DG_TIPPRESSURE:
 452                         td->curdata.p = value;
 453                         break;
 454                 case HID_GD_X:
 455                         td->curdata.x = value;
 456                         break;
 457                 case HID_GD_Y:
 458                         td->curdata.y = value;
 459                         break;
 460                 case HID_DG_WIDTH:
 461                         td->curdata.w = value;
 462                         break;
 463                 case HID_DG_HEIGHT:
 464                         td->curdata.h = value;
 465                         break;
 466                 case HID_DG_CONTACTCOUNT:
 467                         /*
 468                          * Includes multi-packet support where subsequent
 469                          * packets are sent with zero contactcount.
 470                          */
 471                         if (value)
 472                                 td->num_expected = value;
 473                         break;
 474
 475                 default:
 476                         /* fallback to the generic hidinput handling */
 477                         return 0;
 478                 }
 479
 480                 if (usage->hid == td->last_slot_field) {
 481                         mt_complete_slot(td);
 482                 }
 483
 484                 if (field->index == td->last_field_index
 485                         && td->num_received >= td->num_expected)
 486                         mt_emit_event(td, field->hidinput->input);
 487
 488         }
 489
 490         /* we have handled the hidinput part, now remains hiddev */
 491         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 492                 hid->hiddev_hid_event(hid, field, usage, value);
 493
 494         return 1;
 495 }
 496
 497 static void mt_set_input_mode(struct hid_device *hdev)
 498 {
 499         struct mt_device *td = hid_get_drvdata(hdev);
 500         struct hid_report *r;
 501         struct hid_report_enum *re;
 502
 503         if (td->inputmode < 0)
 504                 return;
 505
 506         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 507         r = re->report_id_hash[td->inputmode];
 508         if (r) {
 509                 r->field[0]->value[0] = 0x02;
 510                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
 511         }
 512 }
 513
 514 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 515 {
 516         int ret, i;
 517         struct mt_device *td;
 518         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 519
 520         for (i = 0; mt_classes[i].name ; i++) {
 521                 if (id->driver_data == mt_classes[i].name) {
 522                         mtclass = &(mt_classes[i]);
 523                         break;
 524                 }
 525         }
 526
 527         /* This allows the driver to correctly support devices
 528          * that emit events over several HID messages.
 529          */
 530         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 531
 532         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 533         if (!td) {
 534                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 535                 return -ENOMEM;
 536         }
 537         td->mtclass = mtclass;
 538         td->inputmode = -1;
 539         td->last_mt_collection = -1;
 540         hid_set_drvdata(hdev, td);
 541
 542         ret = hid_parse(hdev);
 543         if (ret != 0)
 544                 goto fail;
 545
 546         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 547         if (ret)
 548                 goto fail;
 549
 550         if (!td->maxcontacts)
 551                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 552
 553         td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
 554                                 GFP_KERNEL);
 555         if (!td->slots) {
 556                 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
 557                 hid_hw_stop(hdev);
 558                 ret = -ENOMEM;
 559                 goto fail;
 560         }
 561
 562         mt_set_input_mode(hdev);
 563
 564         return 0;
 565
 566 fail:
 567         kfree(td);
 568         return ret;
 569 }
 570
 571 #ifdef CONFIG_PM
 572 static int mt_reset_resume(struct hid_device *hdev)
 573 {
 574         mt_set_input_mode(hdev);
 575         return 0;
 576 }
 577 #endif
 578
 579 static void mt_remove(struct hid_device *hdev)
 580 {
 581         struct mt_device *td = hid_get_drvdata(hdev);
 582         hid_hw_stop(hdev);
 583         kfree(td->slots);
 584         kfree(td);
 585         hid_set_drvdata(hdev, NULL);
 586 }
 587
 588 static const struct hid_device_id mt_devices[] = {
 589
 590         /* 3M panels */
 591         { .driver_data = MT_CLS_3M,
 592                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
 593                         USB_DEVICE_ID_3M1968) },
 594         { .driver_data = MT_CLS_3M,
 595                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
 596                         USB_DEVICE_ID_3M2256) },
 597
 598         /* ActionStar panels */
 599         { .driver_data = MT_CLS_DEFAULT,
 600                 HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 601                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 602
 603         /* Cando panels */
 604         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 605                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 606                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 607         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 608                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 609                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 610         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 611                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 612                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 613         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 614                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 615                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 616
 617         /* Chunghwa Telecom touch panels */
 618         {  .driver_data = MT_CLS_DEFAULT,
 619                 HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
 620                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
 621
 622         /* CVTouch panels */
 623         { .driver_data = MT_CLS_DEFAULT,
 624                 HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
 625                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
 626
 627         /* Cypress panel */
 628         { .driver_data = MT_CLS_CYPRESS,
 629                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 630                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 631
 632         /* eGalax devices (resistive) */
 633         {  .driver_data = MT_CLS_EGALAX,
 634                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 635                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
 636         {  .driver_data = MT_CLS_EGALAX,
 637                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 638                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
 639
 640         /* eGalax devices (capacitive) */
 641         {  .driver_data = MT_CLS_EGALAX,
 642                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 643                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
 644         {  .driver_data = MT_CLS_EGALAX,
 645                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 646                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
 647         {  .driver_data = MT_CLS_EGALAX,
 648                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 649                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
 650
 651         /* Elo TouchSystems IntelliTouch Plus panel */
 652         { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
 653                 HID_USB_DEVICE(USB_VENDOR_ID_ELO,
 654                         USB_DEVICE_ID_ELO_TS2515) },
 655
 656         /* GeneralTouch panel */
 657         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 658                 HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 659                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
 660
 661         /* GoodTouch panels */
 662         { .driver_data = MT_CLS_DEFAULT,
 663                 HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
 664                         USB_DEVICE_ID_GOODTOUCH_000f) },
 665
 666         /* Ilitek dual touch panel */
 667         {  .driver_data = MT_CLS_DEFAULT,
 668                 HID_USB_DEVICE(USB_VENDOR_ID_ILITEK,
 669                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
 670
 671         /* IRTOUCH panels */
 672         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 673                 HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
 674                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
 675
 676         /* Lumio panels */
 677         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 678                 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 679                         USB_DEVICE_ID_CRYSTALTOUCH) },
 680
 681         /* MosArt panels */
 682         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 683                 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
 684                         USB_DEVICE_ID_ASUS_T91MT)},
 685         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 686                 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
 687                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
 688         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 689                 HID_USB_DEVICE(USB_VENDOR_ID_TURBOX,
 690                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
 691
 692         /* PenMount panels */
 693         { .driver_data = MT_CLS_CONFIDENCE,
 694                 HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
 695                         USB_DEVICE_ID_PENMOUNT_PCI) },
 696
 697         /* PixCir-based panels */
 698         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 699                 HID_USB_DEVICE(USB_VENDOR_ID_HANVON,
 700                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
 701         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 702                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 703                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
 704
 705         /* Stantum panels */
 706         { .driver_data = MT_CLS_CONFIDENCE,
 707                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 708                         USB_DEVICE_ID_MTP)},
 709         { .driver_data = MT_CLS_CONFIDENCE,
 710                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 711                         USB_DEVICE_ID_MTP_STM)},
 712         { .driver_data = MT_CLS_CONFIDENCE,
 713                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 714                         USB_DEVICE_ID_MTP_SITRONIX)},
 715
 716         /* Touch International panels */
 717         { .driver_data = MT_CLS_DEFAULT,
 718                 HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
 719                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
 720
 721         /* Unitec panels */
 722         { .driver_data = MT_CLS_DEFAULT,
 723                 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
 724                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
 725         { .driver_data = MT_CLS_DEFAULT,
 726                 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
 727                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
 728
 729         { }
 730 };
 731 MODULE_DEVICE_TABLE(hid, mt_devices);
 732
 733 static const struct hid_usage_id mt_grabbed_usages[] = {
 734         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
 735         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
 736 };
 737
 738 static struct hid_driver mt_driver = {
 739         .name = "hid-multitouch",
 740         .id_table = mt_devices,
 741         .probe = mt_probe,
 742         .remove = mt_remove,
 743         .input_mapping = mt_input_mapping,
 744         .input_mapped = mt_input_mapped,
 745         .feature_mapping = mt_feature_mapping,
 746         .usage_table = mt_grabbed_usages,
 747         .event = mt_event,
 748 #ifdef CONFIG_PM
 749         .reset_resume = mt_reset_resume,
 750 #endif
 751 };
 752
 753 static int __init mt_init(void)
 754 {
 755         return hid_register_driver(&mt_driver);
 756 }
 757
 758 static void __exit mt_exit(void)
 759 {
 760         hid_unregister_driver(&mt_driver);
 761 }
 762
 763 module_init(mt_init);
 764 module_exit(mt_exit);