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_ALWAYS_VALID           (1 << 4)
  51 #define MT_QUIRK_VALID_IS_INRANGE       (1 << 5)
  52 #define MT_QUIRK_VALID_IS_CONFIDENCE    (1 << 6)
  53 #define MT_QUIRK_EGALAX_XYZ_FIXUP       (1 << 7)
  54 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE    (1 << 8)
  55
  56 struct mt_slot {
  57         __s32 x, y, p, w, h;
  58         __s32 contactid;        /* the device ContactID assigned to this slot */
  59         bool touch_state;       /* is the touch valid? */
  60         bool seen_in_this_frame;/* has this slot been updated */
  61 };
  62
  63 struct mt_device {
  64         struct mt_slot curdata; /* placeholder of incoming data */
  65         struct mt_class *mtclass;       /* our mt device class */
  66         unsigned last_field_index;      /* last field index of the report */
  67         unsigned last_slot_field;       /* the last field of a slot */
  68         int last_mt_collection; /* last known mt-related collection */
  69         __s8 inputmode;         /* InputMode HID feature, -1 if non-existent */
  70         __u8 num_received;      /* how many contacts we received */
  71         __u8 num_expected;      /* expected last contact index */
  72         __u8 maxcontacts;
  73         bool curvalid;          /* is the current contact valid? */
  74         struct mt_slot *slots;
  75 };
  76
  77 struct mt_class {
  78         __s32 name;     /* MT_CLS */
  79         __s32 quirks;
  80         __s32 sn_move;  /* Signal/noise ratio for move events */
  81         __s32 sn_width; /* Signal/noise ratio for width events */
  82         __s32 sn_height;        /* Signal/noise ratio for height events */
  83         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
  84         __u8 maxcontacts;
  85 };
  86
  87 /* classes of device behavior */
  88 #define MT_CLS_DEFAULT                          0x0001
  89
  90 #define MT_CLS_SERIAL                           0x0002
  91 #define MT_CLS_CONFIDENCE                       0x0003
  92 #define MT_CLS_CONFIDENCE_MINUS_ONE             0x0004
  93 #define MT_CLS_DUAL_INRANGE_CONTACTID           0x0005
  94 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       0x0006
  95 #define MT_CLS_DUAL_NSMU_CONTACTID              0x0007
  96
  97 /* vendor specific classes */
  98 #define MT_CLS_3M                               0x0101
  99 #define MT_CLS_CYPRESS                          0x0102
 100 #define MT_CLS_EGALAX                           0x0103
 101
 102 #define MT_DEFAULT_MAXCONTACT   10
 103
 104 /*
 105  * these device-dependent functions determine what slot corresponds
 106  * to a valid contact that was just read.
 107  */
 108
 109 static int cypress_compute_slot(struct mt_device *td)
 110 {
 111         if (td->curdata.contactid != 0 || td->num_received == 0)
 112                 return td->curdata.contactid;
 113         else
 114                 return -1;
 115 }
 116
 117 static int find_slot_from_contactid(struct mt_device *td)
 118 {
 119         int i;
 120         for (i = 0; i < td->maxcontacts; ++i) {
 121                 if (td->slots[i].contactid == td->curdata.contactid &&
 122                         td->slots[i].touch_state)
 123                         return i;
 124         }
 125         for (i = 0; i < td->maxcontacts; ++i) {
 126                 if (!td->slots[i].seen_in_this_frame &&
 127                         !td->slots[i].touch_state)
 128                         return i;
 129         }
 130         /* should not occurs. If this happens that means
 131          * that the device sent more touches that it says
 132          * in the report descriptor. It is ignored then. */
 133         return -1;
 134 }
 135
 136 struct mt_class mt_classes[] = {
 137         { .name = MT_CLS_DEFAULT,
 138                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 139         { .name = MT_CLS_SERIAL,
 140                 .quirks = MT_QUIRK_ALWAYS_VALID},
 141         { .name = MT_CLS_CONFIDENCE,
 142                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 143         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 144                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 145                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 146         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 147                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 148                         MT_QUIRK_SLOT_IS_CONTACTID,
 149                 .maxcontacts = 2 },
 150         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 151                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 152                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 153                 .maxcontacts = 2 },
 154         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
 155                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 156                         MT_QUIRK_SLOT_IS_CONTACTID,
 157                 .maxcontacts = 2 },
 158
 159         /*
 160          * vendor specific classes
 161          */
 162         { .name = MT_CLS_3M,
 163                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 164                         MT_QUIRK_SLOT_IS_CONTACTID,
 165                 .sn_move = 2048,
 166                 .sn_width = 128,
 167                 .sn_height = 128 },
 168         { .name = MT_CLS_CYPRESS,
 169                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 170                         MT_QUIRK_CYPRESS,
 171                 .maxcontacts = 10 },
 172         { .name = MT_CLS_EGALAX,
 173                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 174                         MT_QUIRK_VALID_IS_INRANGE |
 175                         MT_QUIRK_EGALAX_XYZ_FIXUP,
 176                 .maxcontacts = 2,
 177                 .sn_move = 4096,
 178                 .sn_pressure = 32,
 179         },
 180
 181         { }
 182 };
 183
 184 static void mt_feature_mapping(struct hid_device *hdev,
 185                 struct hid_field *field, struct hid_usage *usage)
 186 {
 187         struct mt_device *td = hid_get_drvdata(hdev);
 188
 189         switch (usage->hid) {
 190         case HID_DG_INPUTMODE:
 191                 td->inputmode = field->report->id;
 192                 break;
 193         case HID_DG_CONTACTMAX:
 194                 td->maxcontacts = field->value[0];
 195                 if (td->mtclass->maxcontacts)
 196                         /* check if the maxcontacts is given by the class */
 197                         td->maxcontacts = td->mtclass->maxcontacts;
 198
 199                 break;
 200         }
 201 }
 202
 203 static void set_abs(struct input_dev *input, unsigned int code,
 204                 struct hid_field *field, int snratio)
 205 {
 206         int fmin = field->logical_minimum;
 207         int fmax = field->logical_maximum;
 208         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 209         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 210 }
 211
 212 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 213                 struct hid_field *field, struct hid_usage *usage,
 214                 unsigned long **bit, int *max)
 215 {
 216         struct mt_device *td = hid_get_drvdata(hdev);
 217         struct mt_class *cls = td->mtclass;
 218         __s32 quirks = cls->quirks;
 219
 220         /* Only map fields from TouchScreen or TouchPad collections.
 221          * We need to ignore fields that belong to other collections
 222          * such as Mouse that might have the same GenericDesktop usages. */
 223         if (field->application == HID_DG_TOUCHSCREEN)
 224                 set_bit(INPUT_PROP_DIRECT, hi->input->propbit);
 225         else if (field->application == HID_DG_TOUCHPAD)
 226                 set_bit(INPUT_PROP_POINTER, hi->input->propbit);
 227         else
 228                 return 0;
 229
 230         switch (usage->hid & HID_USAGE_PAGE) {
 231
 232         case HID_UP_GENDESK:
 233                 switch (usage->hid) {
 234                 case HID_GD_X:
 235                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 236                                 field->logical_maximum = 32760;
 237                         hid_map_usage(hi, usage, bit, max,
 238                                         EV_ABS, ABS_MT_POSITION_X);
 239                         set_abs(hi->input, ABS_MT_POSITION_X, field,
 240                                 cls->sn_move);
 241                         /* touchscreen emulation */
 242                         set_abs(hi->input, ABS_X, field, cls->sn_move);
 243                         if (td->last_mt_collection == usage->collection_index) {
 244                                 td->last_slot_field = usage->hid;
 245                                 td->last_field_index = field->index;
 246                         }
 247                         return 1;
 248                 case HID_GD_Y:
 249                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 250                                 field->logical_maximum = 32760;
 251                         hid_map_usage(hi, usage, bit, max,
 252                                         EV_ABS, ABS_MT_POSITION_Y);
 253                         set_abs(hi->input, ABS_MT_POSITION_Y, field,
 254                                 cls->sn_move);
 255                         /* touchscreen emulation */
 256                         set_abs(hi->input, ABS_Y, field, cls->sn_move);
 257                         if (td->last_mt_collection == usage->collection_index) {
 258                                 td->last_slot_field = usage->hid;
 259                                 td->last_field_index = field->index;
 260                         }
 261                         return 1;
 262                 }
 263                 return 0;
 264
 265         case HID_UP_DIGITIZER:
 266                 switch (usage->hid) {
 267                 case HID_DG_INRANGE:
 268                         if (td->last_mt_collection == usage->collection_index) {
 269                                 td->last_slot_field = usage->hid;
 270                                 td->last_field_index = field->index;
 271                         }
 272                         return 1;
 273                 case HID_DG_CONFIDENCE:
 274                         if (td->last_mt_collection == usage->collection_index) {
 275                                 td->last_slot_field = usage->hid;
 276                                 td->last_field_index = field->index;
 277                         }
 278                         return 1;
 279                 case HID_DG_TIPSWITCH:
 280                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 281                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 282                         if (td->last_mt_collection == usage->collection_index) {
 283                                 td->last_slot_field = usage->hid;
 284                                 td->last_field_index = field->index;
 285                         }
 286                         return 1;
 287                 case HID_DG_CONTACTID:
 288                         if (!td->maxcontacts)
 289                                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 290                         input_mt_init_slots(hi->input, td->maxcontacts);
 291                         td->last_slot_field = usage->hid;
 292                         td->last_field_index = field->index;
 293                         td->last_mt_collection = usage->collection_index;
 294                         return 1;
 295                 case HID_DG_WIDTH:
 296                         hid_map_usage(hi, usage, bit, max,
 297                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 298                         set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 299                                 cls->sn_width);
 300                         if (td->last_mt_collection == usage->collection_index) {
 301                                 td->last_slot_field = usage->hid;
 302                                 td->last_field_index = field->index;
 303                         }
 304                         return 1;
 305                 case HID_DG_HEIGHT:
 306                         hid_map_usage(hi, usage, bit, max,
 307                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 308                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 309                                 cls->sn_height);
 310                         input_set_abs_params(hi->input,
 311                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 312                         if (td->last_mt_collection == usage->collection_index) {
 313                                 td->last_slot_field = usage->hid;
 314                                 td->last_field_index = field->index;
 315                         }
 316                         return 1;
 317                 case HID_DG_TIPPRESSURE:
 318                         if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
 319                                 field->logical_minimum = 0;
 320                         hid_map_usage(hi, usage, bit, max,
 321                                         EV_ABS, ABS_MT_PRESSURE);
 322                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 323                                 cls->sn_pressure);
 324                         /* touchscreen emulation */
 325                         set_abs(hi->input, ABS_PRESSURE, field,
 326                                 cls->sn_pressure);
 327                         if (td->last_mt_collection == usage->collection_index) {
 328                                 td->last_slot_field = usage->hid;
 329                                 td->last_field_index = field->index;
 330                         }
 331                         return 1;
 332                 case HID_DG_CONTACTCOUNT:
 333                         if (td->last_mt_collection == usage->collection_index)
 334                                 td->last_field_index = field->index;
 335                         return 1;
 336                 case HID_DG_CONTACTMAX:
 337                         /* we don't set td->last_slot_field as contactcount and
 338                          * contact max are global to the report */
 339                         if (td->last_mt_collection == usage->collection_index)
 340                                 td->last_field_index = field->index;
 341                         return -1;
 342                 }
 343                 /* let hid-input decide for the others */
 344                 return 0;
 345
 346         case 0xff000000:
 347                 /* we do not want to map these: no input-oriented meaning */
 348                 return -1;
 349         }
 350
 351         return 0;
 352 }
 353
 354 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 355                 struct hid_field *field, struct hid_usage *usage,
 356                 unsigned long **bit, int *max)
 357 {
 358         if (usage->type == EV_KEY || usage->type == EV_ABS)
 359                 set_bit(usage->type, hi->input->evbit);
 360
 361         return -1;
 362 }
 363
 364 static int mt_compute_slot(struct mt_device *td)
 365 {
 366         __s32 quirks = td->mtclass->quirks;
 367
 368         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 369                 return td->curdata.contactid;
 370
 371         if (quirks & MT_QUIRK_CYPRESS)
 372                 return cypress_compute_slot(td);
 373
 374         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 375                 return td->num_received;
 376
 377         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 378                 return td->curdata.contactid - 1;
 379
 380         return find_slot_from_contactid(td);
 381 }
 382
 383 /*
 384  * this function is called when a whole contact has been processed,
 385  * so that it can assign it to a slot and store the data there
 386  */
 387 static void mt_complete_slot(struct mt_device *td)
 388 {
 389         td->curdata.seen_in_this_frame = true;
 390         if (td->curvalid) {
 391                 int slotnum = mt_compute_slot(td);
 392
 393                 if (slotnum >= 0 && slotnum < td->maxcontacts)
 394                         td->slots[slotnum] = td->curdata;
 395         }
 396         td->num_received++;
 397 }
 398
 399
 400 /*
 401  * this function is called when a whole packet has been received and processed,
 402  * so that it can decide what to send to the input layer.
 403  */
 404 static void mt_emit_event(struct mt_device *td, struct input_dev *input)
 405 {
 406         int i;
 407
 408         for (i = 0; i < td->maxcontacts; ++i) {
 409                 struct mt_slot *s = &(td->slots[i]);
 410                 if ((td->mtclass->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
 411                         !s->seen_in_this_frame) {
 412                         s->touch_state = false;
 413                 }
 414
 415                 input_mt_slot(input, i);
 416                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 417                         s->touch_state);
 418                 if (s->touch_state) {
 419                         /* this finger is on the screen */
 420                         int wide = (s->w > s->h);
 421                         /* divided by two to match visual scale of touch */
 422                         int major = max(s->w, s->h) >> 1;
 423                         int minor = min(s->w, s->h) >> 1;
 424
 425                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 426                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 427                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 428                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 429                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 430                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 431                 }
 432                 s->seen_in_this_frame = false;
 433
 434         }
 435
 436         input_mt_report_pointer_emulation(input, true);
 437         input_sync(input);
 438         td->num_received = 0;
 439 }
 440
 441
 442
 443 static int mt_event(struct hid_device *hid, struct hid_field *field,
 444                                 struct hid_usage *usage, __s32 value)
 445 {
 446         struct mt_device *td = hid_get_drvdata(hid);
 447         __s32 quirks = td->mtclass->quirks;
 448
 449         if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
 450                 switch (usage->hid) {
 451                 case HID_DG_INRANGE:
 452                         if (quirks & MT_QUIRK_ALWAYS_VALID)
 453                                 td->curvalid = true;
 454                         else if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 455                                 td->curvalid = value;
 456                         break;
 457                 case HID_DG_TIPSWITCH:
 458                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 459                                 td->curvalid = value;
 460                         td->curdata.touch_state = value;
 461                         break;
 462                 case HID_DG_CONFIDENCE:
 463                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 464                                 td->curvalid = value;
 465                         break;
 466                 case HID_DG_CONTACTID:
 467                         td->curdata.contactid = value;
 468                         break;
 469                 case HID_DG_TIPPRESSURE:
 470                         td->curdata.p = value;
 471                         break;
 472                 case HID_GD_X:
 473                         td->curdata.x = value;
 474                         break;
 475                 case HID_GD_Y:
 476                         td->curdata.y = value;
 477                         break;
 478                 case HID_DG_WIDTH:
 479                         td->curdata.w = value;
 480                         break;
 481                 case HID_DG_HEIGHT:
 482                         td->curdata.h = value;
 483                         break;
 484                 case HID_DG_CONTACTCOUNT:
 485                         /*
 486                          * Includes multi-packet support where subsequent
 487                          * packets are sent with zero contactcount.
 488                          */
 489                         if (value)
 490                                 td->num_expected = value;
 491                         break;
 492
 493                 default:
 494                         /* fallback to the generic hidinput handling */
 495                         return 0;
 496                 }
 497
 498                 if (usage->hid == td->last_slot_field) {
 499                         mt_complete_slot(td);
 500                 }
 501
 502                 if (field->index == td->last_field_index
 503                         && td->num_received >= td->num_expected)
 504                         mt_emit_event(td, field->hidinput->input);
 505
 506         }
 507
 508         /* we have handled the hidinput part, now remains hiddev */
 509         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 510                 hid->hiddev_hid_event(hid, field, usage, value);
 511
 512         return 1;
 513 }
 514
 515 static void mt_set_input_mode(struct hid_device *hdev)
 516 {
 517         struct mt_device *td = hid_get_drvdata(hdev);
 518         struct hid_report *r;
 519         struct hid_report_enum *re;
 520
 521         if (td->inputmode < 0)
 522                 return;
 523
 524         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 525         r = re->report_id_hash[td->inputmode];
 526         if (r) {
 527                 r->field[0]->value[0] = 0x02;
 528                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
 529         }
 530 }
 531
 532 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 533 {
 534         int ret, i;
 535         struct mt_device *td;
 536         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 537
 538         for (i = 0; mt_classes[i].name ; i++) {
 539                 if (id->driver_data == mt_classes[i].name) {
 540                         mtclass = &(mt_classes[i]);
 541                         break;
 542                 }
 543         }
 544
 545         /* This allows the driver to correctly support devices
 546          * that emit events over several HID messages.
 547          */
 548         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 549
 550         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 551         if (!td) {
 552                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 553                 return -ENOMEM;
 554         }
 555         td->mtclass = mtclass;
 556         td->inputmode = -1;
 557         td->last_mt_collection = -1;
 558         hid_set_drvdata(hdev, td);
 559
 560         ret = hid_parse(hdev);
 561         if (ret != 0)
 562                 goto fail;
 563
 564         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 565         if (ret)
 566                 goto fail;
 567
 568         td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
 569                                 GFP_KERNEL);
 570         if (!td->slots) {
 571                 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
 572                 hid_hw_stop(hdev);
 573                 ret = -ENOMEM;
 574                 goto fail;
 575         }
 576
 577         mt_set_input_mode(hdev);
 578
 579         return 0;
 580
 581 fail:
 582         kfree(td);
 583         return ret;
 584 }
 585
 586 #ifdef CONFIG_PM
 587 static int mt_reset_resume(struct hid_device *hdev)
 588 {
 589         mt_set_input_mode(hdev);
 590         return 0;
 591 }
 592 #endif
 593
 594 static void mt_remove(struct hid_device *hdev)
 595 {
 596         struct mt_device *td = hid_get_drvdata(hdev);
 597         hid_hw_stop(hdev);
 598         kfree(td->slots);
 599         kfree(td);
 600         hid_set_drvdata(hdev, NULL);
 601 }
 602
 603 static const struct hid_device_id mt_devices[] = {
 604
 605         /* 3M panels */
 606         { .driver_data = MT_CLS_3M,
 607                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
 608                         USB_DEVICE_ID_3M1968) },
 609         { .driver_data = MT_CLS_3M,
 610                 HID_USB_DEVICE(USB_VENDOR_ID_3M,
 611                         USB_DEVICE_ID_3M2256) },
 612
 613         /* ActionStar panels */
 614         { .driver_data = MT_CLS_DEFAULT,
 615                 HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 616                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 617
 618         /* Cando panels */
 619         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 620                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 621                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 622         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 623                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 624                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 625         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 626                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 627                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 628         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 629                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 630                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 631
 632         /* Chunghwa Telecom touch panels */
 633         {  .driver_data = MT_CLS_DEFAULT,
 634                 HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
 635                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
 636
 637         /* CVTouch panels */
 638         { .driver_data = MT_CLS_DEFAULT,
 639                 HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
 640                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
 641
 642         /* Cypress panel */
 643         { .driver_data = MT_CLS_CYPRESS,
 644                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 645                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 646
 647         /* eGalax devices (resistive) */
 648         {  .driver_data = MT_CLS_EGALAX,
 649                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 650                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
 651         {  .driver_data = MT_CLS_EGALAX,
 652                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 653                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
 654
 655         /* eGalax devices (capacitive) */
 656         {  .driver_data = MT_CLS_EGALAX,
 657                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 658                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
 659         {  .driver_data = MT_CLS_EGALAX,
 660                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 661                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
 662         {  .driver_data = MT_CLS_EGALAX,
 663                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 664                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
 665
 666         /* Elo TouchSystems IntelliTouch Plus panel */
 667         { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
 668                 HID_USB_DEVICE(USB_VENDOR_ID_ELO,
 669                         USB_DEVICE_ID_ELO_TS2515) },
 670
 671         /* GeneralTouch panel */
 672         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 673                 HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 674                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
 675
 676         /* GoodTouch panels */
 677         { .driver_data = MT_CLS_DEFAULT,
 678                 HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
 679                         USB_DEVICE_ID_GOODTOUCH_000f) },
 680
 681         /* Ideacom panel */
 682         { .driver_data = MT_CLS_SERIAL,
 683                 HID_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
 684                         USB_DEVICE_ID_IDEACOM_IDC6650) },
 685
 686         /* Ilitek dual touch panel */
 687         {  .driver_data = MT_CLS_DEFAULT,
 688                 HID_USB_DEVICE(USB_VENDOR_ID_ILITEK,
 689                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
 690
 691         /* IRTOUCH panels */
 692         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 693                 HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
 694                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
 695
 696         /* LG Display panels */
 697         { .driver_data = MT_CLS_DEFAULT,
 698                 HID_USB_DEVICE(USB_VENDOR_ID_LG,
 699                         USB_DEVICE_ID_LG_MULTITOUCH) },
 700
 701         /* Lumio panels */
 702         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 703                 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 704                         USB_DEVICE_ID_CRYSTALTOUCH) },
 705         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 706                 HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 707                         USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
 708
 709         /* MosArt panels */
 710         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 711                 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
 712                         USB_DEVICE_ID_ASUS_T91MT)},
 713         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 714                 HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
 715                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
 716         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 717                 HID_USB_DEVICE(USB_VENDOR_ID_TURBOX,
 718                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
 719
 720         /* PenMount panels */
 721         { .driver_data = MT_CLS_CONFIDENCE,
 722                 HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
 723                         USB_DEVICE_ID_PENMOUNT_PCI) },
 724
 725         /* PixCir-based panels */
 726         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 727                 HID_USB_DEVICE(USB_VENDOR_ID_HANVON,
 728                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
 729         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 730                 HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
 731                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
 732
 733         /* Stantum panels */
 734         { .driver_data = MT_CLS_CONFIDENCE,
 735                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 736                         USB_DEVICE_ID_MTP)},
 737         { .driver_data = MT_CLS_CONFIDENCE,
 738                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
 739                         USB_DEVICE_ID_MTP_STM)},
 740         { .driver_data = MT_CLS_CONFIDENCE,
 741                 HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
 742                         USB_DEVICE_ID_MTP_SITRONIX)},
 743
 744         /* Touch International panels */
 745         { .driver_data = MT_CLS_DEFAULT,
 746                 HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
 747                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
 748
 749         /* Unitec panels */
 750         { .driver_data = MT_CLS_DEFAULT,
 751                 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
 752                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
 753         { .driver_data = MT_CLS_DEFAULT,
 754                 HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
 755                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
 756         /* XAT */
 757         { .driver_data = MT_CLS_DEFAULT,
 758                 HID_USB_DEVICE(USB_VENDOR_ID_XAT,
 759                         USB_DEVICE_ID_XAT_CSR) },
 760
 761         { }
 762 };
 763 MODULE_DEVICE_TABLE(hid, mt_devices);
 764
 765 static const struct hid_usage_id mt_grabbed_usages[] = {
 766         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
 767         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
 768 };
 769
 770 static struct hid_driver mt_driver = {
 771         .name = "hid-multitouch",
 772         .id_table = mt_devices,
 773         .probe = mt_probe,
 774         .remove = mt_remove,
 775         .input_mapping = mt_input_mapping,
 776         .input_mapped = mt_input_mapped,
 777         .feature_mapping = mt_feature_mapping,
 778         .usage_table = mt_grabbed_usages,
 779         .event = mt_event,
 780 #ifdef CONFIG_PM
 781         .reset_resume = mt_reset_resume,
 782 #endif
 783 };
 784
 785 static int __init mt_init(void)
 786 {
 787         return hid_register_driver(&mt_driver);
 788 }
 789
 790 static void __exit mt_exit(void)
 791 {
 792         hid_unregister_driver(&mt_driver);
 793 }
 794
 795 module_init(mt_init);
 796 module_exit(mt_exit);