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                         td->last_slot_field = usage->hid;
 223                         td->last_field_index = field->index;
 224                         return 1;
 225                 case HID_GD_Y:
 226                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 227                                 field->logical_maximum = 32760;
 228                         hid_map_usage(hi, usage, bit, max,
 229                                         EV_ABS, ABS_MT_POSITION_Y);
 230                         set_abs(hi->input, ABS_MT_POSITION_Y, field,
 231                                 cls->sn_move);
 232                         td->last_slot_field = usage->hid;
 233                         td->last_field_index = field->index;
 234                         return 1;
 235                 }
 236                 return 0;
 237
 238         case HID_UP_DIGITIZER:
 239                 switch (usage->hid) {
 240                 case HID_DG_INRANGE:
 241                         hid_map_usage(hi, usage, bit, max, EV_KEY,
 242                                 ABS_MT_TOUCH_MINOR);
 243                         input_set_capability(hi->input, EV_KEY,
 244                                 ABS_MT_TOUCH_MINOR);
 245                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 0);
 246                         td->last_slot_field = usage->hid;
 247                         td->last_field_index = field->index;
 248                         return 1;
 249                 case HID_DG_CONFIDENCE:
 250                         hid_map_usage(hi, usage, bit, max, EV_KEY,
 251                                 ABS_MT_TOUCH_MINOR);
 252                         input_set_capability(hi->input, EV_KEY,
 253                                 ABS_MT_TOUCH_MINOR);
 254                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, 0);
 255                         td->last_slot_field = usage->hid;
 256                         td->last_field_index = field->index;
 257                         return 1;
 258                 case HID_DG_TIPSWITCH:
 259                         hid_map_usage(hi, usage, bit, max, EV_KEY,
 260                                 ABS_MT_TOUCH_MAJOR);
 261                         input_set_capability(hi->input, EV_KEY,
 262                                 ABS_MT_TOUCH_MAJOR);
 263                         set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, 0);
 264                         td->last_slot_field = usage->hid;
 265                         td->last_field_index = field->index;
 266                         return 1;
 267                 case HID_DG_CONTACTID:
 268                         hid_map_usage(hi, usage, bit, max, EV_KEY,
 269                                 ABS_MT_TRACKING_ID);
 270                         input_set_capability(hi->input, EV_KEY,
 271                                 ABS_MT_TRACKING_ID);
 272                         set_abs(hi->input, ABS_MT_TRACKING_ID, field, 0);
 273                         td->last_slot_field = usage->hid;
 274                         td->last_field_index = field->index;
 275                         return 1;
 276                 case HID_DG_WIDTH:
 277                         hid_map_usage(hi, usage, bit, max, EV_KEY,
 278                                 ABS_MT_WIDTH_MAJOR);
 279                         input_set_capability(hi->input, EV_KEY,
 280                                 ABS_MT_WIDTH_MAJOR);
 281                         set_abs(hi->input, ABS_MT_WIDTH_MAJOR, field, 0);
 282                         td->last_slot_field = usage->hid;
 283                         td->last_field_index = field->index;
 284                         return 1;
 285                 case HID_DG_HEIGHT:
 286                         hid_map_usage(hi, usage, bit, max,
 287                                         EV_ABS, ABS_MT_WIDTH_MINOR);
 288                         input_set_capability(hi->input, EV_KEY,
 289                                 ABS_MT_WIDTH_MINOR);
 290                         set_abs(hi->input, ABS_MT_WIDTH_MINOR, field, 0);
 291                         td->last_slot_field = usage->hid;
 292                         td->last_field_index = field->index;
 293                         return 1;
 294                 case HID_DG_TIPPRESSURE:
 295                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 296                                 field->logical_minimum = 0;
 297                         hid_map_usage(hi, usage, bit, max,
 298                                         EV_ABS, ABS_MT_PRESSURE);
 299                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 300                                 cls->sn_pressure);
 301                         /* touchscreen emulation */
 302                         set_abs(hi->input, ABS_PRESSURE, field,
 303                                 cls->sn_pressure);
 304                         td->last_slot_field = usage->hid;
 305                         td->last_field_index = field->index;
 306                         return 1;
 307                 case HID_DG_CONTACTCOUNT:
 308                         td->last_field_index = field->index;
 309                         return 1;
 310                 case HID_DG_CONTACTMAX:
 311                         /* we don't set td->last_slot_field as contactcount and
 312                          * contact max are global to the report */
 313                         td->last_field_index = field->index;
 314                         return -1;
 315                 }
 316                 /* let hid-input decide for the others */
 317                 return 0;
 318
 319         case 0xff000000:
 320                 /* we do not want to map these: no input-oriented meaning */
 321                 return -1;
 322         }
 323
 324         return 0;
 325 }
 326
 327 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 328                 struct hid_field *field, struct hid_usage *usage,
 329                 unsigned long **bit, int *max)
 330 {
 331         if (usage->type == EV_KEY || usage->type == EV_ABS)
 332                 set_bit(usage->type, hi->input->evbit);
 333
 334         return -1;
 335 }
 336
 337 static int mt_compute_slot(struct mt_device *td)
 338 {
 339         __s32 quirks = td->mtclass->quirks;
 340
 341         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 342                 return td->curdata.contactid;
 343
 344         if (quirks & MT_QUIRK_CYPRESS)
 345                 return cypress_compute_slot(td);
 346
 347         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 348                 return td->num_received;
 349
 350         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 351                 return td->curdata.contactid - 1;
 352
 353         return find_slot_from_contactid(td);
 354 }
 355
 356 /*
 357  * this function is called when a whole contact has been processed,
 358  * so that it can assign it to a slot and store the data there
 359  */
 360 static void mt_complete_slot(struct mt_device *td)
 361 {
 362         td->curdata.seen_in_this_frame = true;
 363         if (td->curvalid) {
 364                 int slotnum = mt_compute_slot(td);
 365
 366                 if (slotnum >= 0 && slotnum < td->maxcontacts)
 367                         td->slots[slotnum] = td->curdata;
 368         }
 369         td->num_received++;
 370 }
 371
 372
 373 /*
 374  * this function is called when a whole packet has been received and processed,
 375  * so that it can decide what to send to the input layer.
 376  */
 377 static void mt_emit_event(struct mt_device *td, struct input_dev *input)
 378 {
 379         int i;
 380
 381         for (i = 0; i < td->maxcontacts; ++i) {
 382                 struct mt_slot *s = &(td->slots[i]);
 383                 if ((td->mtclass->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
 384                         !s->seen_in_this_frame) {
 385                         if (s->touch_state) {
 386                                 s->touch_state = false;
 387                                 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, s->touch_state);
 388                                 input_mt_sync(input);
 389                         }
 390                         s->seen_in_this_frame = false;
 391                         continue;
 392                 }
 393
 394                 if (!s->seen_in_this_frame)
 395                         continue;
 396
 397                 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, s->touch_state);
 398                 if (s->touch_state) {
 399                         /* this finger is on the screen */
 400                         int wide = (s->w > s->h);
 401                         /* divided by two to match visual scale of touch */
 402                         int major = max(s->w, s->h) >> 1;
 403                         int minor = min(s->w, s->h) >> 1;
 404
 405                         input_event(input, EV_ABS, ABS_MT_TRACKING_ID, s->contactid);
 406                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 407                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 408                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 409                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 410                         input_event(input, EV_ABS, ABS_MT_WIDTH_MAJOR, major);
 411                         input_event(input, EV_ABS, ABS_MT_WIDTH_MINOR, minor);
 412                 }
 413                 input_mt_sync(input);
 414                 s->seen_in_this_frame = false;
 415
 416         }
 417
 418         input_sync(input);
 419         td->num_received = 0;
 420 }
 421
 422
 423
 424 static int mt_event(struct hid_device *hid, struct hid_field *field,
 425                                 struct hid_usage *usage, __s32 value)
 426 {
 427         struct mt_device *td = hid_get_drvdata(hid);
 428         __s32 quirks = td->mtclass->quirks;
 429
 430         if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
 431                 switch (usage->hid) {
 432                 case HID_DG_INRANGE:
 433                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 434                                 td->curvalid = value;
 435                         break;
 436                 case HID_DG_TIPSWITCH:
 437                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 438                                 td->curvalid = value;
 439                         td->curdata.touch_state = value;
 440                         break;
 441                 case HID_DG_CONFIDENCE:
 442                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 443                                 td->curvalid = value;
 444                         break;
 445                 case HID_DG_CONTACTID:
 446                         td->curdata.contactid = value;
 447                         break;
 448                 case HID_DG_TIPPRESSURE:
 449                         td->curdata.p = value;
 450                         break;
 451                 case HID_GD_X:
 452                         td->curdata.x = value;
 453                         break;
 454                 case HID_GD_Y:
 455                         td->curdata.y = value;
 456                         break;
 457                 case HID_DG_WIDTH:
 458                         td->curdata.w = value;
 459                         break;
 460                 case HID_DG_HEIGHT:
 461                         td->curdata.h = value;
 462                         break;
 463                 case HID_DG_CONTACTCOUNT:
 464                         /*
 465                          * Includes multi-packet support where subsequent
 466                          * packets are sent with zero contactcount.
 467                          */
 468                         if (value)
 469                                 td->num_expected = value;
 470                         break;
 471
 472                 default:
 473                         /* fallback to the generic hidinput handling */
 474                         return 0;
 475                 }
 476
 477                 if (usage->hid == td->last_slot_field) {
 478                         mt_complete_slot(td);
 479                 }
 480
 481                 if (field->index == td->last_field_index
 482                         && td->num_received >= td->num_expected)
 483                         mt_emit_event(td, field->hidinput->input);
 484
 485         }
 486
 487         /* we have handled the hidinput part, now remains hiddev */
 488         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 489                 hid->hiddev_hid_event(hid, field, usage, value);
 490
 491         return 1;
 492 }
 493
 494 static void mt_set_input_mode(struct hid_device *hdev)
 495 {
 496         struct mt_device *td = hid_get_drvdata(hdev);
 497         struct hid_report *r;
 498         struct hid_report_enum *re;
 499
 500         if (td->inputmode < 0)
 501                 return;
 502
 503         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 504         r = re->report_id_hash[td->inputmode];
 505         if (r) {
 506                 r->field[0]->value[0] = 0x02;
 507                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
 508         }
 509 }
 510
 511 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 512 {
 513         int ret, i;
 514         struct mt_device *td;
 515         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 516
 517         for (i = 0; mt_classes[i].name ; i++) {
 518                 if (id->driver_data == mt_classes[i].name) {
 519                         mtclass = &(mt_classes[i]);
 520                         break;
 521                 }
 522         }
 523
 524         /* This allows the driver to correctly support devices
 525          * that emit events over several HID messages.
 526          */
 527         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 528
 529         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 530         if (!td) {
 531                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 532                 return -ENOMEM;
 533         }
 534         td->mtclass = mtclass;
 535         td->inputmode = -1;
 536         hid_set_drvdata(hdev, td);
 537
 538         ret = hid_parse(hdev);
 539         if (ret != 0)
 540                 goto fail;
 541
 542         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 543         if (ret)
 544                 goto fail;
 545
 546         if (!td->maxcontacts)
 547                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 548
 549         td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
 550                                 GFP_KERNEL);
 551         if (!td->slots) {
 552                 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
 553                 hid_hw_stop(hdev);
 554                 ret = -ENOMEM;
 555                 goto fail;
 556         }
 557
 558         mt_set_input_mode(hdev);
 559
 560         return 0;
 561
 562 fail:
 563         kfree(td);
 564         return ret;
 565 }
 566
 567 #ifdef CONFIG_PM
 568 static int mt_reset_resume(struct hid_device *hdev)
 569 {
 570         mt_set_input_mode(hdev);
 571         return 0;
 572 }
 573 #endif
 574
 575 static void mt_remove(struct hid_device *hdev)
 576 {
 577         struct mt_device *td = hid_get_drvdata(hdev);
 578         hid_hw_stop(hdev);
 579         kfree(td->slots);
 580         kfree(td);
 581         hid_set_drvdata(hdev, NULL);
 582 }
 583
 584 static const struct hid_device_id mt_devices[] = {
 585
 586         /* 3M panels */
 587         { .driver_data = MT_CLS_3M,
 588                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
 589                         USB_DEVICE_ID_3M1968) },
 590         { .driver_data = MT_CLS_3M,
 591                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
 592                         USB_DEVICE_ID_3M2256) },
 593
 594         /* ActionStar panels */
 595         { .driver_data = MT_CLS_DEFAULT,
 596                 HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 597                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 598
 599         /* Cando panels */
 600         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 601                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 602                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 603         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 604                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 605                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 606         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 607                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 608                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 609         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 610                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 611                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 612
 613         /* CVTouch panels */
 614         { .driver_data = MT_CLS_DEFAULT,
 615                 HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
 616                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
 617
 618         /* Cypress panel */
 619         { .driver_data = MT_CLS_CYPRESS,
 620                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 621                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 622
 623         /* Elo TouchSystems IntelliTouch Plus panel */
 624         { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
 625                 HID_USB_DEVICE(USB_VENDOR_ID_ELO,
 626                         USB_DEVICE_ID_ELO_TS2515) },
 627
 628         /* GeneralTouch panel */
 629         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 630                 HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 631                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
 632
 633         /* GoodTouch panels */
 634         { .driver_data = MT_CLS_DEFAULT,
 635                 HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
 636                         USB_DEVICE_ID_GOODTOUCH_000f) },
 637
 638         /* Ilitek dual touch panel */
 639         {  .driver_data = MT_CLS_DEFAULT,
 640                 HID_USB_DEVICE(USB_VENDOR_ID_ILITEK,
 641                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
 642
 643         /* IRTOUCH panels */
 644         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 645                 HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
 646                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
 647
 648         /* Lumio panels */
 649         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 650                 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 651                         USB_DEVICE_ID_CRYSTALTOUCH) },
 652
 653         /* MosArt panels */
 654         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 655                 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
 656                         USB_DEVICE_ID_ASUS_T91MT)},
 657         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 658                 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
 659                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
 660         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 661                 HID_USB_DEVICE(USB_VENDOR_ID_TURBOX,
 662                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
 663
 664         /* PenMount panels */
 665         { .driver_data = MT_CLS_CONFIDENCE,
 666                 HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
 667                         USB_DEVICE_ID_PENMOUNT_PCI) },
 668
 669         /* PixCir-based panels */
 670         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 671                 HID_USB_DEVICE(USB_VENDOR_ID_HANVON,
 672                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
 673         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 674                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 675                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
 676
 677         /* Resistive eGalax devices */
 678         {  .driver_data = MT_CLS_EGALAX,
 679                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 680                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
 681         {  .driver_data = MT_CLS_EGALAX,
 682                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 683                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
 684
 685         /* Capacitive eGalax devices */
 686         {  .driver_data = MT_CLS_EGALAX,
 687                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 688                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
 689         {  .driver_data = MT_CLS_EGALAX,
 690                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 691                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
 692         {  .driver_data = MT_CLS_EGALAX,
 693                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 694                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
 695
 696         /* Stantum panels */
 697         { .driver_data = MT_CLS_STANTUM,
 698                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 699                         USB_DEVICE_ID_MTP)},
 700         { .driver_data = MT_CLS_STANTUM,
 701                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 702                         USB_DEVICE_ID_MTP_STM)},
 703         { .driver_data = MT_CLS_STANTUM,
 704                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 705                         USB_DEVICE_ID_MTP_SITRONIX)},
 706
 707         { }
 708 };
 709 MODULE_DEVICE_TABLE(hid, mt_devices);
 710
 711 static const struct hid_usage_id mt_grabbed_usages[] = {
 712         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
 713         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
 714 };
 715
 716 static struct hid_driver mt_driver = {
 717         .name = "hid-multitouch",
 718         .id_table = mt_devices,
 719         .probe = mt_probe,
 720         .remove = mt_remove,
 721         .input_mapping = mt_input_mapping,
 722         .input_mapped = mt_input_mapped,
 723         .feature_mapping = mt_feature_mapping,
 724         .usage_table = mt_grabbed_usages,
 725         .event = mt_event,
 726 #ifdef CONFIG_PM
 727         .reset_resume = mt_reset_resume,
 728 #endif
 729 };
 730
 731 static int __init mt_init(void)
 732 {
 733         return hid_register_driver(&mt_driver);
 734 }
 735
 736 static void __exit mt_exit(void)
 737 {
 738         hid_unregister_driver(&mt_driver);
 739 }
 740
 741 module_init(mt_init);
 742 module_exit(mt_exit);