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