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