drivers/hid/hid-multitouch.c

   1 /*
   2  *  HID driver for multitouch panels
   3  *
   4  *  Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
   5  *  Copyright (c) 2010-2012 Benjamin Tissoires <benjamin.tissoires@gmail.com>
   6  *  Copyright (c) 2010-2012 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_SLOT_IS_CONTACTID_MINUS_ONE    (1 << 8)
  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_class {
  63         __s32 name;     /* MT_CLS */
  64         __s32 quirks;
  65         __s32 sn_move;  /* Signal/noise ratio for move events */
  66         __s32 sn_width; /* Signal/noise ratio for width events */
  67         __s32 sn_height;        /* Signal/noise ratio for height events */
  68         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
  69         __u8 maxcontacts;
  70         bool is_indirect;       /* true for touchpads */
  71 };
  72
  73 struct mt_fields {
  74         unsigned usages[HID_MAX_FIELDS];
  75         unsigned int length;
  76 };
  77
  78 struct mt_device {
  79         struct mt_slot curdata; /* placeholder of incoming data */
  80         struct mt_class mtclass;        /* our mt device class */
  81         struct mt_fields *fields;       /* temporary placeholder for storing the
  82                                            multitouch fields */
  83         unsigned last_field_index;      /* last field index of the report */
  84         unsigned last_slot_field;       /* the last field of a slot */
  85         __s8 inputmode;         /* InputMode HID feature, -1 if non-existent */
  86         __s8 inputmode_index;   /* InputMode HID feature index in the report */
  87         __s8 maxcontact_report_id;      /* Maximum Contact Number HID feature,
  88                                    -1 if non-existent */
  89         __u8 num_received;      /* how many contacts we received */
  90         __u8 num_expected;      /* expected last contact index */
  91         __u8 maxcontacts;
  92         __u8 touches_by_report; /* how many touches are present in one report:
  93                                 * 1 means we should use a serial protocol
  94                                 * > 1 means hybrid (multitouch) protocol */
  95         bool serial_maybe;      /* need to check for serial protocol */
  96         bool curvalid;          /* is the current contact valid? */
  97         struct mt_slot *slots;
  98         unsigned mt_flags;      /* flags to pass to input-mt */
  99 };
 100
 101 /* classes of device behavior */
 102 #define MT_CLS_DEFAULT                          0x0001
 103
 104 #define MT_CLS_SERIAL                           0x0002
 105 #define MT_CLS_CONFIDENCE                       0x0003
 106 #define MT_CLS_CONFIDENCE_CONTACT_ID            0x0004
 107 #define MT_CLS_CONFIDENCE_MINUS_ONE             0x0005
 108 #define MT_CLS_DUAL_INRANGE_CONTACTID           0x0006
 109 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       0x0007
 110 #define MT_CLS_DUAL_NSMU_CONTACTID              0x0008
 111 #define MT_CLS_INRANGE_CONTACTNUMBER            0x0009
 112
 113 /* vendor specific classes */
 114 #define MT_CLS_3M                               0x0101
 115 #define MT_CLS_CYPRESS                          0x0102
 116 #define MT_CLS_EGALAX                           0x0103
 117 #define MT_CLS_EGALAX_SERIAL                    0x0104
 118 #define MT_CLS_TOPSEED                          0x0105
 119 #define MT_CLS_PANASONIC                        0x0106
 120
 121 #define MT_DEFAULT_MAXCONTACT   10
 122
 123 #define MT_USB_DEVICE(v, p)     HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
 124 #define MT_BT_DEVICE(v, p)      HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
 125
 126 /*
 127  * these device-dependent functions determine what slot corresponds
 128  * to a valid contact that was just read.
 129  */
 130
 131 static int cypress_compute_slot(struct mt_device *td)
 132 {
 133         if (td->curdata.contactid != 0 || td->num_received == 0)
 134                 return td->curdata.contactid;
 135         else
 136                 return -1;
 137 }
 138
 139 static int find_slot_from_contactid(struct mt_device *td)
 140 {
 141         int i;
 142         for (i = 0; i < td->maxcontacts; ++i) {
 143                 if (td->slots[i].contactid == td->curdata.contactid &&
 144                         td->slots[i].touch_state)
 145                         return i;
 146         }
 147         for (i = 0; i < td->maxcontacts; ++i) {
 148                 if (!td->slots[i].seen_in_this_frame &&
 149                         !td->slots[i].touch_state)
 150                         return i;
 151         }
 152         /* should not occurs. If this happens that means
 153          * that the device sent more touches that it says
 154          * in the report descriptor. It is ignored then. */
 155         return -1;
 156 }
 157
 158 static struct mt_class mt_classes[] = {
 159         { .name = MT_CLS_DEFAULT,
 160                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 161         { .name = MT_CLS_SERIAL,
 162                 .quirks = MT_QUIRK_ALWAYS_VALID},
 163         { .name = MT_CLS_CONFIDENCE,
 164                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 165         { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
 166                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 167                         MT_QUIRK_SLOT_IS_CONTACTID },
 168         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 169                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 170                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 171         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 172                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 173                         MT_QUIRK_SLOT_IS_CONTACTID,
 174                 .maxcontacts = 2 },
 175         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 176                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 177                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 178                 .maxcontacts = 2 },
 179         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
 180                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 181                         MT_QUIRK_SLOT_IS_CONTACTID,
 182                 .maxcontacts = 2 },
 183         { .name = MT_CLS_INRANGE_CONTACTNUMBER,
 184                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 185                         MT_QUIRK_SLOT_IS_CONTACTNUMBER },
 186
 187         /*
 188          * vendor specific classes
 189          */
 190         { .name = MT_CLS_3M,
 191                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 192                         MT_QUIRK_SLOT_IS_CONTACTID,
 193                 .sn_move = 2048,
 194                 .sn_width = 128,
 195                 .sn_height = 128 },
 196         { .name = MT_CLS_CYPRESS,
 197                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 198                         MT_QUIRK_CYPRESS,
 199                 .maxcontacts = 10 },
 200         { .name = MT_CLS_EGALAX,
 201                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 202                         MT_QUIRK_VALID_IS_INRANGE,
 203                 .sn_move = 4096,
 204                 .sn_pressure = 32,
 205         },
 206         { .name = MT_CLS_EGALAX_SERIAL,
 207                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 208                         MT_QUIRK_ALWAYS_VALID,
 209                 .sn_move = 4096,
 210                 .sn_pressure = 32,
 211         },
 212         { .name = MT_CLS_TOPSEED,
 213                 .quirks = MT_QUIRK_ALWAYS_VALID,
 214                 .is_indirect = true,
 215                 .maxcontacts = 2,
 216         },
 217         { .name = MT_CLS_PANASONIC,
 218                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
 219                 .maxcontacts = 4 },
 220
 221         { }
 222 };
 223
 224 static ssize_t mt_show_quirks(struct device *dev,
 225                            struct device_attribute *attr,
 226                            char *buf)
 227 {
 228         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 229         struct mt_device *td = hid_get_drvdata(hdev);
 230
 231         return sprintf(buf, "%u\n", td->mtclass.quirks);
 232 }
 233
 234 static ssize_t mt_set_quirks(struct device *dev,
 235                           struct device_attribute *attr,
 236                           const char *buf, size_t count)
 237 {
 238         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 239         struct mt_device *td = hid_get_drvdata(hdev);
 240
 241         unsigned long val;
 242
 243         if (kstrtoul(buf, 0, &val))
 244                 return -EINVAL;
 245
 246         td->mtclass.quirks = val;
 247
 248         return count;
 249 }
 250
 251 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
 252
 253 static struct attribute *sysfs_attrs[] = {
 254         &dev_attr_quirks.attr,
 255         NULL
 256 };
 257
 258 static struct attribute_group mt_attribute_group = {
 259         .attrs = sysfs_attrs
 260 };
 261
 262 static void mt_feature_mapping(struct hid_device *hdev,
 263                 struct hid_field *field, struct hid_usage *usage)
 264 {
 265         struct mt_device *td = hid_get_drvdata(hdev);
 266         int i;
 267
 268         switch (usage->hid) {
 269         case HID_DG_INPUTMODE:
 270                 td->inputmode = field->report->id;
 271                 td->inputmode_index = 0; /* has to be updated below */
 272
 273                 for (i=0; i < field->maxusage; i++) {
 274                         if (field->usage[i].hid == usage->hid) {
 275                                 td->inputmode_index = i;
 276                                 break;
 277                         }
 278                 }
 279
 280                 break;
 281         case HID_DG_CONTACTMAX:
 282                 td->maxcontact_report_id = field->report->id;
 283                 td->maxcontacts = field->value[0];
 284                 if (td->mtclass.maxcontacts)
 285                         /* check if the maxcontacts is given by the class */
 286                         td->maxcontacts = td->mtclass.maxcontacts;
 287
 288                 break;
 289         }
 290 }
 291
 292 static void set_abs(struct input_dev *input, unsigned int code,
 293                 struct hid_field *field, int snratio)
 294 {
 295         int fmin = field->logical_minimum;
 296         int fmax = field->logical_maximum;
 297         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 298         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 299 }
 300
 301 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
 302                 struct hid_input *hi)
 303 {
 304         struct mt_fields *f = td->fields;
 305
 306         if (f->length >= HID_MAX_FIELDS)
 307                 return;
 308
 309         f->usages[f->length++] = usage->hid;
 310 }
 311
 312 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 313                 struct hid_field *field, struct hid_usage *usage,
 314                 unsigned long **bit, int *max)
 315 {
 316         struct mt_device *td = hid_get_drvdata(hdev);
 317         struct mt_class *cls = &td->mtclass;
 318         int code;
 319
 320         /* Only map fields from TouchScreen or TouchPad collections.
 321         * We need to ignore fields that belong to other collections
 322         * such as Mouse that might have the same GenericDesktop usages. */
 323         if (field->application == HID_DG_TOUCHSCREEN)
 324                 td->mt_flags |= INPUT_MT_DIRECT;
 325         else if (field->application != HID_DG_TOUCHPAD)
 326                 return 0;
 327
 328         /*
 329          * Model touchscreens providing buttons as touchpads.
 330          */
 331         if (field->application == HID_DG_TOUCHPAD ||
 332             (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
 333                 td->mt_flags |= INPUT_MT_POINTER;
 334
 335         /* eGalax devices provide a Digitizer.Stylus input which overrides
 336          * the correct Digitizers.Finger X/Y ranges.
 337          * Let's just ignore this input. */
 338         if (field->physical == HID_DG_STYLUS)
 339                 return -1;
 340
 341         switch (usage->hid & HID_USAGE_PAGE) {
 342
 343         case HID_UP_GENDESK:
 344                 switch (usage->hid) {
 345                 case HID_GD_X:
 346                         hid_map_usage(hi, usage, bit, max,
 347                                         EV_ABS, ABS_MT_POSITION_X);
 348                         set_abs(hi->input, ABS_MT_POSITION_X, field,
 349                                 cls->sn_move);
 350                         mt_store_field(usage, td, hi);
 351                         td->last_field_index = field->index;
 352                         return 1;
 353                 case HID_GD_Y:
 354                         hid_map_usage(hi, usage, bit, max,
 355                                         EV_ABS, ABS_MT_POSITION_Y);
 356                         set_abs(hi->input, ABS_MT_POSITION_Y, field,
 357                                 cls->sn_move);
 358                         mt_store_field(usage, td, hi);
 359                         td->last_field_index = field->index;
 360                         return 1;
 361                 }
 362                 return 0;
 363
 364         case HID_UP_DIGITIZER:
 365                 switch (usage->hid) {
 366                 case HID_DG_INRANGE:
 367                         mt_store_field(usage, td, hi);
 368                         td->last_field_index = field->index;
 369                         return 1;
 370                 case HID_DG_CONFIDENCE:
 371                         mt_store_field(usage, td, hi);
 372                         td->last_field_index = field->index;
 373                         return 1;
 374                 case HID_DG_TIPSWITCH:
 375                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 376                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 377                         mt_store_field(usage, td, hi);
 378                         td->last_field_index = field->index;
 379                         return 1;
 380                 case HID_DG_CONTACTID:
 381                         mt_store_field(usage, td, hi);
 382                         td->last_field_index = field->index;
 383                         td->touches_by_report++;
 384                         return 1;
 385                 case HID_DG_WIDTH:
 386                         hid_map_usage(hi, usage, bit, max,
 387                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 388                         set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 389                                 cls->sn_width);
 390                         mt_store_field(usage, td, hi);
 391                         td->last_field_index = field->index;
 392                         return 1;
 393                 case HID_DG_HEIGHT:
 394                         hid_map_usage(hi, usage, bit, max,
 395                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 396                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 397                                 cls->sn_height);
 398                         input_set_abs_params(hi->input,
 399                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 400                         mt_store_field(usage, td, hi);
 401                         td->last_field_index = field->index;
 402                         return 1;
 403                 case HID_DG_TIPPRESSURE:
 404                         hid_map_usage(hi, usage, bit, max,
 405                                         EV_ABS, ABS_MT_PRESSURE);
 406                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 407                                 cls->sn_pressure);
 408                         mt_store_field(usage, td, hi);
 409                         td->last_field_index = field->index;
 410                         return 1;
 411                 case HID_DG_CONTACTCOUNT:
 412                         td->last_field_index = field->index;
 413                         return 1;
 414                 case HID_DG_CONTACTMAX:
 415                         /* we don't set td->last_slot_field as contactcount and
 416                          * contact max are global to the report */
 417                         td->last_field_index = field->index;
 418                         return -1;
 419                 }
 420                 case HID_DG_TOUCH:
 421                         /* Legacy devices use TIPSWITCH and not TOUCH.
 422                          * Let's just ignore this field. */
 423                         return -1;
 424                 /* let hid-input decide for the others */
 425                 return 0;
 426
 427         case HID_UP_BUTTON:
 428                 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
 429                 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
 430                 input_set_capability(hi->input, EV_KEY, code);
 431                 return 1;
 432
 433         case 0xff000000:
 434                 /* we do not want to map these: no input-oriented meaning */
 435                 return -1;
 436         }
 437
 438         return 0;
 439 }
 440
 441 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 442                 struct hid_field *field, struct hid_usage *usage,
 443                 unsigned long **bit, int *max)
 444 {
 445         if (usage->type == EV_KEY || usage->type == EV_ABS)
 446                 set_bit(usage->type, hi->input->evbit);
 447
 448         return -1;
 449 }
 450
 451 static int mt_compute_slot(struct mt_device *td)
 452 {
 453         __s32 quirks = td->mtclass.quirks;
 454
 455         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 456                 return td->curdata.contactid;
 457
 458         if (quirks & MT_QUIRK_CYPRESS)
 459                 return cypress_compute_slot(td);
 460
 461         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 462                 return td->num_received;
 463
 464         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 465                 return td->curdata.contactid - 1;
 466
 467         return find_slot_from_contactid(td);
 468 }
 469
 470 /*
 471  * this function is called when a whole contact has been processed,
 472  * so that it can assign it to a slot and store the data there
 473  */
 474 static void mt_complete_slot(struct mt_device *td)
 475 {
 476         td->curdata.seen_in_this_frame = true;
 477         if (td->curvalid) {
 478                 int slotnum = mt_compute_slot(td);
 479
 480                 if (slotnum >= 0 && slotnum < td->maxcontacts)
 481                         td->slots[slotnum] = td->curdata;
 482         }
 483         td->num_received++;
 484 }
 485
 486
 487 /*
 488  * this function is called when a whole packet has been received and processed,
 489  * so that it can decide what to send to the input layer.
 490  */
 491 static void mt_emit_event(struct mt_device *td, struct input_dev *input)
 492 {
 493         int i;
 494
 495         for (i = 0; i < td->maxcontacts; ++i) {
 496                 struct mt_slot *s = &(td->slots[i]);
 497                 if ((td->mtclass.quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
 498                         !s->seen_in_this_frame) {
 499                         s->touch_state = false;
 500                 }
 501
 502                 input_mt_slot(input, i);
 503                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 504                         s->touch_state);
 505                 if (s->touch_state) {
 506                         /* this finger is on the screen */
 507                         int wide = (s->w > s->h);
 508                         /* divided by two to match visual scale of touch */
 509                         int major = max(s->w, s->h) >> 1;
 510                         int minor = min(s->w, s->h) >> 1;
 511
 512                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 513                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 514                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 515                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 516                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 517                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 518                 }
 519                 s->seen_in_this_frame = false;
 520
 521         }
 522
 523         input_mt_sync_frame(input);
 524         input_sync(input);
 525         td->num_received = 0;
 526 }
 527
 528
 529
 530 static int mt_event(struct hid_device *hid, struct hid_field *field,
 531                                 struct hid_usage *usage, __s32 value)
 532 {
 533         struct mt_device *td = hid_get_drvdata(hid);
 534         __s32 quirks = td->mtclass.quirks;
 535
 536         if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
 537                 switch (usage->hid) {
 538                 case HID_DG_INRANGE:
 539                         if (quirks & MT_QUIRK_ALWAYS_VALID)
 540                                 td->curvalid = true;
 541                         else if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 542                                 td->curvalid = value;
 543                         break;
 544                 case HID_DG_TIPSWITCH:
 545                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 546                                 td->curvalid = value;
 547                         td->curdata.touch_state = value;
 548                         break;
 549                 case HID_DG_CONFIDENCE:
 550                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 551                                 td->curvalid = value;
 552                         break;
 553                 case HID_DG_CONTACTID:
 554                         td->curdata.contactid = value;
 555                         break;
 556                 case HID_DG_TIPPRESSURE:
 557                         td->curdata.p = value;
 558                         break;
 559                 case HID_GD_X:
 560                         td->curdata.x = value;
 561                         break;
 562                 case HID_GD_Y:
 563                         td->curdata.y = value;
 564                         break;
 565                 case HID_DG_WIDTH:
 566                         td->curdata.w = value;
 567                         break;
 568                 case HID_DG_HEIGHT:
 569                         td->curdata.h = value;
 570                         break;
 571                 case HID_DG_CONTACTCOUNT:
 572                         /*
 573                          * Includes multi-packet support where subsequent
 574                          * packets are sent with zero contactcount.
 575                          */
 576                         if (value)
 577                                 td->num_expected = value;
 578                         break;
 579                 case HID_DG_TOUCH:
 580                         /* do nothing */
 581                         break;
 582
 583                 default:
 584                         /* fallback to the generic hidinput handling */
 585                         return 0;
 586                 }
 587
 588                 if (usage->hid == td->last_slot_field)
 589                         mt_complete_slot(td);
 590
 591                 if (field->index == td->last_field_index
 592                         && td->num_received >= td->num_expected)
 593                         mt_emit_event(td, field->hidinput->input);
 594
 595         }
 596
 597         /* we have handled the hidinput part, now remains hiddev */
 598         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 599                 hid->hiddev_hid_event(hid, field, usage, value);
 600
 601         return 1;
 602 }
 603
 604 static void mt_set_input_mode(struct hid_device *hdev)
 605 {
 606         struct mt_device *td = hid_get_drvdata(hdev);
 607         struct hid_report *r;
 608         struct hid_report_enum *re;
 609
 610         if (td->inputmode < 0)
 611                 return;
 612
 613         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 614         r = re->report_id_hash[td->inputmode];
 615         if (r) {
 616                 r->field[0]->value[td->inputmode_index] = 0x02;
 617                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
 618         }
 619 }
 620
 621 static void mt_set_maxcontacts(struct hid_device *hdev)
 622 {
 623         struct mt_device *td = hid_get_drvdata(hdev);
 624         struct hid_report *r;
 625         struct hid_report_enum *re;
 626         int fieldmax, max;
 627
 628         if (td->maxcontact_report_id < 0)
 629                 return;
 630
 631         if (!td->mtclass.maxcontacts)
 632                 return;
 633
 634         re = &hdev->report_enum[HID_FEATURE_REPORT];
 635         r = re->report_id_hash[td->maxcontact_report_id];
 636         if (r) {
 637                 max = td->mtclass.maxcontacts;
 638                 fieldmax = r->field[0]->logical_maximum;
 639                 max = min(fieldmax, max);
 640                 if (r->field[0]->value[0] != max) {
 641                         r->field[0]->value[0] = max;
 642                         usbhid_submit_report(hdev, r, USB_DIR_OUT);
 643                 }
 644         }
 645 }
 646
 647 static void mt_post_parse_default_settings(struct mt_device *td)
 648 {
 649         __s32 quirks = td->mtclass.quirks;
 650
 651         /* unknown serial device needs special quirks */
 652         if (td->touches_by_report == 1) {
 653                 quirks |= MT_QUIRK_ALWAYS_VALID;
 654                 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 655                 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 656                 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 657         }
 658
 659         td->mtclass.quirks = quirks;
 660 }
 661
 662 static void mt_post_parse(struct mt_device *td)
 663 {
 664         struct mt_fields *f = td->fields;
 665
 666         if (td->touches_by_report > 0) {
 667                 int field_count_per_touch = f->length / td->touches_by_report;
 668                 td->last_slot_field = f->usages[field_count_per_touch - 1];
 669         }
 670 }
 671
 672 static void mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
 673
 674 {
 675         struct mt_device *td = hid_get_drvdata(hdev);
 676         struct mt_class *cls = &td->mtclass;
 677         struct input_dev *input = hi->input;
 678
 679         /* Only initialize slots for MT input devices */
 680         if (!test_bit(ABS_MT_POSITION_X, input->absbit))
 681                 return;
 682
 683         if (!td->maxcontacts)
 684                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 685
 686         mt_post_parse(td);
 687         if (td->serial_maybe)
 688                 mt_post_parse_default_settings(td);
 689
 690         if (cls->is_indirect)
 691                 td->mt_flags |= INPUT_MT_POINTER;
 692
 693         input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
 694
 695         td->mt_flags = 0;
 696 }
 697
 698 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 699 {
 700         int ret, i;
 701         struct mt_device *td;
 702         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 703
 704         if (id) {
 705                 for (i = 0; mt_classes[i].name ; i++) {
 706                         if (id->driver_data == mt_classes[i].name) {
 707                                 mtclass = &(mt_classes[i]);
 708                                 break;
 709                         }
 710                 }
 711         }
 712
 713         /* This allows the driver to correctly support devices
 714          * that emit events over several HID messages.
 715          */
 716         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 717
 718         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 719         if (!td) {
 720                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 721                 return -ENOMEM;
 722         }
 723         td->mtclass = *mtclass;
 724         td->inputmode = -1;
 725         td->maxcontact_report_id = -1;
 726         hid_set_drvdata(hdev, td);
 727
 728         td->fields = kzalloc(sizeof(struct mt_fields), GFP_KERNEL);
 729         if (!td->fields) {
 730                 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
 731                 ret = -ENOMEM;
 732                 goto fail;
 733         }
 734
 735         if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
 736                 td->serial_maybe = true;
 737
 738         ret = hid_parse(hdev);
 739         if (ret != 0)
 740                 goto fail;
 741
 742         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 743         if (ret)
 744                 goto fail;
 745
 746         td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
 747                                 GFP_KERNEL);
 748         if (!td->slots) {
 749                 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
 750                 hid_hw_stop(hdev);
 751                 ret = -ENOMEM;
 752                 goto fail;
 753         }
 754
 755         ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
 756
 757         mt_set_maxcontacts(hdev);
 758         mt_set_input_mode(hdev);
 759
 760         kfree(td->fields);
 761         td->fields = NULL;
 762
 763         return 0;
 764
 765 fail:
 766         kfree(td->fields);
 767         kfree(td);
 768         return ret;
 769 }
 770
 771 #ifdef CONFIG_PM
 772 static int mt_reset_resume(struct hid_device *hdev)
 773 {
 774         mt_set_maxcontacts(hdev);
 775         mt_set_input_mode(hdev);
 776         return 0;
 777 }
 778 #endif
 779
 780 static void mt_remove(struct hid_device *hdev)
 781 {
 782         struct mt_device *td = hid_get_drvdata(hdev);
 783         sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
 784         hid_hw_stop(hdev);
 785         kfree(td->slots);
 786         kfree(td);
 787         hid_set_drvdata(hdev, NULL);
 788 }
 789
 790 static const struct hid_device_id mt_devices[] = {
 791
 792         /* 3M panels */
 793         { .driver_data = MT_CLS_3M,
 794                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 795                         USB_DEVICE_ID_3M1968) },
 796         { .driver_data = MT_CLS_3M,
 797                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 798                         USB_DEVICE_ID_3M2256) },
 799         { .driver_data = MT_CLS_3M,
 800                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 801                         USB_DEVICE_ID_3M3266) },
 802
 803         /* ActionStar panels */
 804         { .driver_data = MT_CLS_DEFAULT,
 805                 MT_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 806                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 807
 808         /* Atmel panels */
 809         { .driver_data = MT_CLS_SERIAL,
 810                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 811                         USB_DEVICE_ID_ATMEL_MULTITOUCH) },
 812         { .driver_data = MT_CLS_SERIAL,
 813                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 814                         USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
 815
 816         /* Baanto multitouch devices */
 817         { .driver_data = MT_CLS_DEFAULT,
 818                 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
 819                         USB_DEVICE_ID_BAANTO_MT_190W2) },
 820         /* Cando panels */
 821         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 822                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 823                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 824         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 825                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 826                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 827         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 828                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 829                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 830         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 831                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 832                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 833
 834         /* Chunghwa Telecom touch panels */
 835         {  .driver_data = MT_CLS_DEFAULT,
 836                 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
 837                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
 838
 839         /* CVTouch panels */
 840         { .driver_data = MT_CLS_DEFAULT,
 841                 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
 842                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
 843
 844         /* Cypress panel */
 845         { .driver_data = MT_CLS_CYPRESS,
 846                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 847                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 848
 849         /* eGalax devices (resistive) */
 850         { .driver_data = MT_CLS_EGALAX,
 851                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 852                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
 853         { .driver_data = MT_CLS_EGALAX,
 854                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 855                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
 856
 857         /* eGalax devices (capacitive) */
 858         { .driver_data = MT_CLS_EGALAX,
 859                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 860                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
 861         { .driver_data = MT_CLS_EGALAX_SERIAL,
 862                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 863                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
 864         { .driver_data = MT_CLS_EGALAX_SERIAL,
 865                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 866                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
 867         { .driver_data = MT_CLS_EGALAX_SERIAL,
 868                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 869                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
 870         { .driver_data = MT_CLS_EGALAX_SERIAL,
 871                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 872                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
 873         { .driver_data = MT_CLS_EGALAX,
 874                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 875                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
 876         { .driver_data = MT_CLS_EGALAX_SERIAL,
 877                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 878                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
 879         { .driver_data = MT_CLS_EGALAX,
 880                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 881                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
 882         { .driver_data = MT_CLS_EGALAX_SERIAL,
 883                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 884                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
 885         { .driver_data = MT_CLS_EGALAX,
 886                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 887                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
 888         { .driver_data = MT_CLS_EGALAX,
 889                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 890                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
 891         { .driver_data = MT_CLS_EGALAX_SERIAL,
 892                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 893                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
 894         { .driver_data = MT_CLS_EGALAX_SERIAL,
 895                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 896                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
 897
 898         /* Elo TouchSystems IntelliTouch Plus panel */
 899         { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
 900                 MT_USB_DEVICE(USB_VENDOR_ID_ELO,
 901                         USB_DEVICE_ID_ELO_TS2515) },
 902
 903         /* GeneralTouch panel */
 904         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 905                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 906                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
 907
 908         /* Gametel game controller */
 909         { .driver_data = MT_CLS_DEFAULT,
 910                 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
 911                         USB_DEVICE_ID_GAMETEL_MT_MODE) },
 912
 913         /* GoodTouch panels */
 914         { .driver_data = MT_CLS_DEFAULT,
 915                 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
 916                         USB_DEVICE_ID_GOODTOUCH_000f) },
 917
 918         /* Hanvon panels */
 919         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 920                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
 921                         USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
 922
 923         /* Ideacom panel */
 924         { .driver_data = MT_CLS_SERIAL,
 925                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
 926                         USB_DEVICE_ID_IDEACOM_IDC6650) },
 927         { .driver_data = MT_CLS_SERIAL,
 928                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
 929                         USB_DEVICE_ID_IDEACOM_IDC6651) },
 930
 931         /* Ilitek dual touch panel */
 932         {  .driver_data = MT_CLS_DEFAULT,
 933                 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
 934                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
 935
 936         /* IRTOUCH panels */
 937         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 938                 MT_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
 939                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
 940
 941         /* LG Display panels */
 942         { .driver_data = MT_CLS_DEFAULT,
 943                 MT_USB_DEVICE(USB_VENDOR_ID_LG,
 944                         USB_DEVICE_ID_LG_MULTITOUCH) },
 945
 946         /* Lumio panels */
 947         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 948                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 949                         USB_DEVICE_ID_CRYSTALTOUCH) },
 950         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 951                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 952                         USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
 953
 954         /* MosArt panels */
 955         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 956                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
 957                         USB_DEVICE_ID_ASUS_T91MT)},
 958         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 959                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
 960                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
 961         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 962                 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
 963                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
 964
 965         /* Panasonic panels */
 966         { .driver_data = MT_CLS_PANASONIC,
 967                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
 968                         USB_DEVICE_ID_PANABOARD_UBT780) },
 969         { .driver_data = MT_CLS_PANASONIC,
 970                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
 971                         USB_DEVICE_ID_PANABOARD_UBT880) },
 972
 973         /* Novatek Panel */
 974         { .driver_data = MT_CLS_DEFAULT,
 975                 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
 976                         USB_DEVICE_ID_NOVATEK_PCT) },
 977
 978         /* PenMount panels */
 979         { .driver_data = MT_CLS_CONFIDENCE,
 980                 MT_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
 981                         USB_DEVICE_ID_PENMOUNT_PCI) },
 982
 983         /* PixArt optical touch screen */
 984         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
 985                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
 986                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
 987         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
 988                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
 989                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
 990         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
 991                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
 992                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
 993
 994         /* PixCir-based panels */
 995         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 996                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON,
 997                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
 998         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 999                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1000                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1001
1002         /* Quanta-based panels */
1003         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1004                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1005                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1006         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1007                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1008                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1009         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1010                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1011                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) },
1012
1013         /* Stantum panels */
1014         { .driver_data = MT_CLS_CONFIDENCE,
1015                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM,
1016                         USB_DEVICE_ID_MTP)},
1017         { .driver_data = MT_CLS_CONFIDENCE,
1018                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1019                         USB_DEVICE_ID_MTP_STM)},
1020         { .driver_data = MT_CLS_CONFIDENCE,
1021                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
1022                         USB_DEVICE_ID_MTP_SITRONIX)},
1023
1024         /* TopSeed panels */
1025         { .driver_data = MT_CLS_TOPSEED,
1026                 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1027                         USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1028
1029         /* Touch International panels */
1030         { .driver_data = MT_CLS_DEFAULT,
1031                 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1032                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1033
1034         /* Unitec panels */
1035         { .driver_data = MT_CLS_DEFAULT,
1036                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1037                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1038         { .driver_data = MT_CLS_DEFAULT,
1039                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1040                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1041         /* XAT */
1042         { .driver_data = MT_CLS_DEFAULT,
1043                 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1044                         USB_DEVICE_ID_XAT_CSR) },
1045
1046         /* Xiroku */
1047         { .driver_data = MT_CLS_DEFAULT,
1048                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1049                         USB_DEVICE_ID_XIROKU_SPX) },
1050         { .driver_data = MT_CLS_DEFAULT,
1051                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1052                         USB_DEVICE_ID_XIROKU_MPX) },
1053         { .driver_data = MT_CLS_DEFAULT,
1054                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1055                         USB_DEVICE_ID_XIROKU_CSR) },
1056         { .driver_data = MT_CLS_DEFAULT,
1057                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1058                         USB_DEVICE_ID_XIROKU_SPX1) },
1059         { .driver_data = MT_CLS_DEFAULT,
1060                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1061                         USB_DEVICE_ID_XIROKU_MPX1) },
1062         { .driver_data = MT_CLS_DEFAULT,
1063                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1064                         USB_DEVICE_ID_XIROKU_CSR1) },
1065         { .driver_data = MT_CLS_DEFAULT,
1066                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1067                         USB_DEVICE_ID_XIROKU_SPX2) },
1068         { .driver_data = MT_CLS_DEFAULT,
1069                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1070                         USB_DEVICE_ID_XIROKU_MPX2) },
1071         { .driver_data = MT_CLS_DEFAULT,
1072                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1073                         USB_DEVICE_ID_XIROKU_CSR2) },
1074
1075         /* Zytronic panels */
1076         { .driver_data = MT_CLS_SERIAL,
1077                 MT_USB_DEVICE(USB_VENDOR_ID_ZYTRONIC,
1078                         USB_DEVICE_ID_ZYTRONIC_ZXY100) },
1079
1080         /* Generic MT device */
1081         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1082         { }
1083 };
1084 MODULE_DEVICE_TABLE(hid, mt_devices);
1085
1086 static const struct hid_usage_id mt_grabbed_usages[] = {
1087         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1088         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1089 };
1090
1091 static struct hid_driver mt_driver = {
1092         .name = "hid-multitouch",
1093         .id_table = mt_devices,
1094         .probe = mt_probe,
1095         .remove = mt_remove,
1096         .input_mapping = mt_input_mapping,
1097         .input_mapped = mt_input_mapped,
1098         .input_configured = mt_input_configured,
1099         .feature_mapping = mt_feature_mapping,
1100         .usage_table = mt_grabbed_usages,
1101         .event = mt_event,
1102 #ifdef CONFIG_PM
1103         .reset_resume = mt_reset_resume,
1104 #endif
1105 };
1106
1107 static int __init mt_init(void)
1108 {
1109         return hid_register_driver(&mt_driver);
1110 }
1111
1112 static void __exit mt_exit(void)
1113 {
1114         hid_unregister_driver(&mt_driver);
1115 }
1116
1117 module_init(mt_init);
1118 module_exit(mt_exit);