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 #define MT_QUIRK_NO_AREA                (1 << 9)
  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 };
  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         unsigned mt_flags;      /* flags to pass to input-mt */
  98 };
  99
 100 /* classes of device behavior */
 101 #define MT_CLS_DEFAULT                          0x0001
 102
 103 #define MT_CLS_SERIAL                           0x0002
 104 #define MT_CLS_CONFIDENCE                       0x0003
 105 #define MT_CLS_CONFIDENCE_CONTACT_ID            0x0004
 106 #define MT_CLS_CONFIDENCE_MINUS_ONE             0x0005
 107 #define MT_CLS_DUAL_INRANGE_CONTACTID           0x0006
 108 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       0x0007
 109 #define MT_CLS_DUAL_NSMU_CONTACTID              0x0008
 110 #define MT_CLS_INRANGE_CONTACTNUMBER            0x0009
 111
 112 /* vendor specific classes */
 113 #define MT_CLS_3M                               0x0101
 114 #define MT_CLS_CYPRESS                          0x0102
 115 #define MT_CLS_EGALAX                           0x0103
 116 #define MT_CLS_EGALAX_SERIAL                    0x0104
 117 #define MT_CLS_TOPSEED                          0x0105
 118 #define MT_CLS_PANASONIC                        0x0106
 119 #define MT_CLS_FLATFROG                         0x0107
 120 #define MT_CLS_GENERALTOUCH_TWOFINGERS          0x0108
 121 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS      0x0109
 122
 123 #define MT_DEFAULT_MAXCONTACT   10
 124
 125 #define MT_USB_DEVICE(v, p)     HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
 126 #define MT_BT_DEVICE(v, p)      HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
 127
 128 /*
 129  * these device-dependent functions determine what slot corresponds
 130  * to a valid contact that was just read.
 131  */
 132
 133 static int cypress_compute_slot(struct mt_device *td)
 134 {
 135         if (td->curdata.contactid != 0 || td->num_received == 0)
 136                 return td->curdata.contactid;
 137         else
 138                 return -1;
 139 }
 140
 141 static struct mt_class mt_classes[] = {
 142         { .name = MT_CLS_DEFAULT,
 143                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 144         { .name = MT_CLS_SERIAL,
 145                 .quirks = MT_QUIRK_ALWAYS_VALID},
 146         { .name = MT_CLS_CONFIDENCE,
 147                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 148         { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
 149                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 150                         MT_QUIRK_SLOT_IS_CONTACTID },
 151         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 152                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 153                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 154         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 155                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 156                         MT_QUIRK_SLOT_IS_CONTACTID,
 157                 .maxcontacts = 2 },
 158         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 159                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 160                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 161                 .maxcontacts = 2 },
 162         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
 163                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 164                         MT_QUIRK_SLOT_IS_CONTACTID,
 165                 .maxcontacts = 2 },
 166         { .name = MT_CLS_INRANGE_CONTACTNUMBER,
 167                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 168                         MT_QUIRK_SLOT_IS_CONTACTNUMBER },
 169
 170         /*
 171          * vendor specific classes
 172          */
 173         { .name = MT_CLS_3M,
 174                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 175                         MT_QUIRK_SLOT_IS_CONTACTID,
 176                 .sn_move = 2048,
 177                 .sn_width = 128,
 178                 .sn_height = 128,
 179                 .maxcontacts = 60,
 180         },
 181         { .name = MT_CLS_CYPRESS,
 182                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 183                         MT_QUIRK_CYPRESS,
 184                 .maxcontacts = 10 },
 185         { .name = MT_CLS_EGALAX,
 186                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 187                         MT_QUIRK_VALID_IS_INRANGE,
 188                 .sn_move = 4096,
 189                 .sn_pressure = 32,
 190         },
 191         { .name = MT_CLS_EGALAX_SERIAL,
 192                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 193                         MT_QUIRK_ALWAYS_VALID,
 194                 .sn_move = 4096,
 195                 .sn_pressure = 32,
 196         },
 197         { .name = MT_CLS_TOPSEED,
 198                 .quirks = MT_QUIRK_ALWAYS_VALID,
 199                 .is_indirect = true,
 200                 .maxcontacts = 2,
 201         },
 202         { .name = MT_CLS_PANASONIC,
 203                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
 204                 .maxcontacts = 4 },
 205         { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
 206                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 207                         MT_QUIRK_VALID_IS_INRANGE |
 208                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 209                 .maxcontacts = 2
 210         },
 211         { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
 212                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 213                         MT_QUIRK_SLOT_IS_CONTACTNUMBER
 214         },
 215
 216         { .name = MT_CLS_FLATFROG,
 217                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 218                         MT_QUIRK_NO_AREA,
 219                 .sn_move = 2048,
 220                 .maxcontacts = 40,
 221         },
 222         { }
 223 };
 224
 225 static ssize_t mt_show_quirks(struct device *dev,
 226                            struct device_attribute *attr,
 227                            char *buf)
 228 {
 229         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 230         struct mt_device *td = hid_get_drvdata(hdev);
 231
 232         return sprintf(buf, "%u\n", td->mtclass.quirks);
 233 }
 234
 235 static ssize_t mt_set_quirks(struct device *dev,
 236                           struct device_attribute *attr,
 237                           const char *buf, size_t count)
 238 {
 239         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 240         struct mt_device *td = hid_get_drvdata(hdev);
 241
 242         unsigned long val;
 243
 244         if (kstrtoul(buf, 0, &val))
 245                 return -EINVAL;
 246
 247         td->mtclass.quirks = val;
 248
 249         return count;
 250 }
 251
 252 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
 253
 254 static struct attribute *sysfs_attrs[] = {
 255         &dev_attr_quirks.attr,
 256         NULL
 257 };
 258
 259 static struct attribute_group mt_attribute_group = {
 260         .attrs = sysfs_attrs
 261 };
 262
 263 static void mt_feature_mapping(struct hid_device *hdev,
 264                 struct hid_field *field, struct hid_usage *usage)
 265 {
 266         struct mt_device *td = hid_get_drvdata(hdev);
 267         int i;
 268
 269         switch (usage->hid) {
 270         case HID_DG_INPUTMODE:
 271                 td->inputmode = field->report->id;
 272                 td->inputmode_index = 0; /* has to be updated below */
 273
 274                 for (i=0; i < field->maxusage; i++) {
 275                         if (field->usage[i].hid == usage->hid) {
 276                                 td->inputmode_index = i;
 277                                 break;
 278                         }
 279                 }
 280
 281                 break;
 282         case HID_DG_CONTACTMAX:
 283                 td->maxcontact_report_id = field->report->id;
 284                 td->maxcontacts = field->value[0];
 285                 if (td->mtclass.maxcontacts)
 286                         /* check if the maxcontacts is given by the class */
 287                         td->maxcontacts = td->mtclass.maxcontacts;
 288
 289                 break;
 290         }
 291 }
 292
 293 static void set_abs(struct input_dev *input, unsigned int code,
 294                 struct hid_field *field, int snratio)
 295 {
 296         int fmin = field->logical_minimum;
 297         int fmax = field->logical_maximum;
 298         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 299         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 300 }
 301
 302 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
 303                 struct hid_input *hi)
 304 {
 305         struct mt_fields *f = td->fields;
 306
 307         if (f->length >= HID_MAX_FIELDS)
 308                 return;
 309
 310         f->usages[f->length++] = usage->hid;
 311 }
 312
 313 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 314                 struct hid_field *field, struct hid_usage *usage,
 315                 unsigned long **bit, int *max)
 316 {
 317         struct mt_device *td = hid_get_drvdata(hdev);
 318         struct mt_class *cls = &td->mtclass;
 319         int code;
 320
 321         /* Only map fields from TouchScreen or TouchPad collections.
 322         * We need to ignore fields that belong to other collections
 323         * such as Mouse that might have the same GenericDesktop usages. */
 324         if (field->application == HID_DG_TOUCHSCREEN)
 325                 td->mt_flags |= INPUT_MT_DIRECT;
 326         else if (field->application != HID_DG_TOUCHPAD)
 327                 return 0;
 328
 329         /*
 330          * Model touchscreens providing buttons as touchpads.
 331          */
 332         if (field->application == HID_DG_TOUCHPAD ||
 333             (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
 334                 td->mt_flags |= INPUT_MT_POINTER;
 335
 336         /* eGalax devices provide a Digitizer.Stylus input which overrides
 337          * the correct Digitizers.Finger X/Y ranges.
 338          * Let's just ignore this input. */
 339         if (field->physical == HID_DG_STYLUS)
 340                 return -1;
 341
 342         switch (usage->hid & HID_USAGE_PAGE) {
 343
 344         case HID_UP_GENDESK:
 345                 switch (usage->hid) {
 346                 case HID_GD_X:
 347                         hid_map_usage(hi, usage, bit, max,
 348                                         EV_ABS, ABS_MT_POSITION_X);
 349                         set_abs(hi->input, ABS_MT_POSITION_X, field,
 350                                 cls->sn_move);
 351                         mt_store_field(usage, td, hi);
 352                         td->last_field_index = field->index;
 353                         return 1;
 354                 case HID_GD_Y:
 355                         hid_map_usage(hi, usage, bit, max,
 356                                         EV_ABS, ABS_MT_POSITION_Y);
 357                         set_abs(hi->input, ABS_MT_POSITION_Y, field,
 358                                 cls->sn_move);
 359                         mt_store_field(usage, td, hi);
 360                         td->last_field_index = field->index;
 361                         return 1;
 362                 }
 363                 return 0;
 364
 365         case HID_UP_DIGITIZER:
 366                 switch (usage->hid) {
 367                 case HID_DG_INRANGE:
 368                         mt_store_field(usage, td, hi);
 369                         td->last_field_index = field->index;
 370                         return 1;
 371                 case HID_DG_CONFIDENCE:
 372                         mt_store_field(usage, td, hi);
 373                         td->last_field_index = field->index;
 374                         return 1;
 375                 case HID_DG_TIPSWITCH:
 376                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 377                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 378                         mt_store_field(usage, td, hi);
 379                         td->last_field_index = field->index;
 380                         return 1;
 381                 case HID_DG_CONTACTID:
 382                         mt_store_field(usage, td, hi);
 383                         td->last_field_index = field->index;
 384                         td->touches_by_report++;
 385                         return 1;
 386                 case HID_DG_WIDTH:
 387                         hid_map_usage(hi, usage, bit, max,
 388                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 389                         if (!(cls->quirks & MT_QUIRK_NO_AREA))
 390                                 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 391                                         cls->sn_width);
 392                         mt_store_field(usage, td, hi);
 393                         td->last_field_index = field->index;
 394                         return 1;
 395                 case HID_DG_HEIGHT:
 396                         hid_map_usage(hi, usage, bit, max,
 397                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 398                         if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
 399                                 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 400                                         cls->sn_height);
 401                                 input_set_abs_params(hi->input,
 402                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 403                         }
 404                         mt_store_field(usage, td, hi);
 405                         td->last_field_index = field->index;
 406                         return 1;
 407                 case HID_DG_TIPPRESSURE:
 408                         hid_map_usage(hi, usage, bit, max,
 409                                         EV_ABS, ABS_MT_PRESSURE);
 410                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 411                                 cls->sn_pressure);
 412                         mt_store_field(usage, td, hi);
 413                         td->last_field_index = field->index;
 414                         return 1;
 415                 case HID_DG_CONTACTCOUNT:
 416                         td->last_field_index = field->index;
 417                         return 1;
 418                 case HID_DG_CONTACTMAX:
 419                         /* we don't set td->last_slot_field as contactcount and
 420                          * contact max are global to the report */
 421                         td->last_field_index = field->index;
 422                         return -1;
 423                 case HID_DG_TOUCH:
 424                         /* Legacy devices use TIPSWITCH and not TOUCH.
 425                          * Let's just ignore this field. */
 426                         return -1;
 427                 }
 428                 /* let hid-input decide for the others */
 429                 return 0;
 430
 431         case HID_UP_BUTTON:
 432                 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
 433                 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
 434                 input_set_capability(hi->input, EV_KEY, code);
 435                 return 1;
 436
 437         case 0xff000000:
 438                 /* we do not want to map these: no input-oriented meaning */
 439                 return -1;
 440         }
 441
 442         return 0;
 443 }
 444
 445 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 446                 struct hid_field *field, struct hid_usage *usage,
 447                 unsigned long **bit, int *max)
 448 {
 449         if (usage->type == EV_KEY || usage->type == EV_ABS)
 450                 set_bit(usage->type, hi->input->evbit);
 451
 452         return -1;
 453 }
 454
 455 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
 456 {
 457         __s32 quirks = td->mtclass.quirks;
 458
 459         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 460                 return td->curdata.contactid;
 461
 462         if (quirks & MT_QUIRK_CYPRESS)
 463                 return cypress_compute_slot(td);
 464
 465         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 466                 return td->num_received;
 467
 468         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 469                 return td->curdata.contactid - 1;
 470
 471         return input_mt_get_slot_by_key(input, td->curdata.contactid);
 472 }
 473
 474 /*
 475  * this function is called when a whole contact has been processed,
 476  * so that it can assign it to a slot and store the data there
 477  */
 478 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
 479 {
 480         if (td->curvalid) {
 481                 int slotnum = mt_compute_slot(td, input);
 482                 struct mt_slot *s = &td->curdata;
 483
 484                 if (slotnum < 0 || slotnum >= td->maxcontacts)
 485                         return;
 486
 487                 input_mt_slot(input, slotnum);
 488                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 489                         s->touch_state);
 490                 if (s->touch_state) {
 491                         /* this finger is on the screen */
 492                         int wide = (s->w > s->h);
 493                         /* divided by two to match visual scale of touch */
 494                         int major = max(s->w, s->h) >> 1;
 495                         int minor = min(s->w, s->h) >> 1;
 496
 497                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 498                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 499                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 500                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 501                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 502                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 503                 }
 504         }
 505
 506         td->num_received++;
 507 }
 508
 509 /*
 510  * this function is called when a whole packet has been received and processed,
 511  * so that it can decide what to send to the input layer.
 512  */
 513 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
 514 {
 515         input_mt_sync_frame(input);
 516         input_sync(input);
 517         td->num_received = 0;
 518 }
 519
 520 static int mt_event(struct hid_device *hid, struct hid_field *field,
 521                                 struct hid_usage *usage, __s32 value)
 522 {
 523         struct mt_device *td = hid_get_drvdata(hid);
 524         __s32 quirks = td->mtclass.quirks;
 525
 526         if (hid->claimed & HID_CLAIMED_INPUT) {
 527                 switch (usage->hid) {
 528                 case HID_DG_INRANGE:
 529                         if (quirks & MT_QUIRK_ALWAYS_VALID)
 530                                 td->curvalid = true;
 531                         else if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 532                                 td->curvalid = value;
 533                         break;
 534                 case HID_DG_TIPSWITCH:
 535                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 536                                 td->curvalid = value;
 537                         td->curdata.touch_state = value;
 538                         break;
 539                 case HID_DG_CONFIDENCE:
 540                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 541                                 td->curvalid = value;
 542                         break;
 543                 case HID_DG_CONTACTID:
 544                         td->curdata.contactid = value;
 545                         break;
 546                 case HID_DG_TIPPRESSURE:
 547                         td->curdata.p = value;
 548                         break;
 549                 case HID_GD_X:
 550                         td->curdata.x = value;
 551                         break;
 552                 case HID_GD_Y:
 553                         td->curdata.y = value;
 554                         break;
 555                 case HID_DG_WIDTH:
 556                         td->curdata.w = value;
 557                         break;
 558                 case HID_DG_HEIGHT:
 559                         td->curdata.h = value;
 560                         break;
 561                 case HID_DG_CONTACTCOUNT:
 562                         /*
 563                          * Includes multi-packet support where subsequent
 564                          * packets are sent with zero contactcount.
 565                          */
 566                         if (value)
 567                                 td->num_expected = value;
 568                         break;
 569                 case HID_DG_TOUCH:
 570                         /* do nothing */
 571                         break;
 572
 573                 default:
 574                         /* fallback to the generic hidinput handling */
 575                         return 0;
 576                 }
 577
 578                 if (usage->hid == td->last_slot_field)
 579                         mt_complete_slot(td, field->hidinput->input);
 580
 581                 if (field->index == td->last_field_index
 582                         && td->num_received >= td->num_expected)
 583                         mt_sync_frame(td, field->hidinput->input);
 584
 585         }
 586
 587         /* we have handled the hidinput part, now remains hiddev */
 588         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 589                 hid->hiddev_hid_event(hid, field, usage, value);
 590
 591         return 1;
 592 }
 593
 594 static void mt_set_input_mode(struct hid_device *hdev)
 595 {
 596         struct mt_device *td = hid_get_drvdata(hdev);
 597         struct hid_report *r;
 598         struct hid_report_enum *re;
 599
 600         if (td->inputmode < 0)
 601                 return;
 602
 603         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 604         r = re->report_id_hash[td->inputmode];
 605         if (r) {
 606                 r->field[0]->value[td->inputmode_index] = 0x02;
 607                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
 608         }
 609 }
 610
 611 static void mt_set_maxcontacts(struct hid_device *hdev)
 612 {
 613         struct mt_device *td = hid_get_drvdata(hdev);
 614         struct hid_report *r;
 615         struct hid_report_enum *re;
 616         int fieldmax, max;
 617
 618         if (td->maxcontact_report_id < 0)
 619                 return;
 620
 621         if (!td->mtclass.maxcontacts)
 622                 return;
 623
 624         re = &hdev->report_enum[HID_FEATURE_REPORT];
 625         r = re->report_id_hash[td->maxcontact_report_id];
 626         if (r) {
 627                 max = td->mtclass.maxcontacts;
 628                 fieldmax = r->field[0]->logical_maximum;
 629                 max = min(fieldmax, max);
 630                 if (r->field[0]->value[0] != max) {
 631                         r->field[0]->value[0] = max;
 632                         usbhid_submit_report(hdev, r, USB_DIR_OUT);
 633                 }
 634         }
 635 }
 636
 637 static void mt_post_parse_default_settings(struct mt_device *td)
 638 {
 639         __s32 quirks = td->mtclass.quirks;
 640
 641         /* unknown serial device needs special quirks */
 642         if (td->touches_by_report == 1) {
 643                 quirks |= MT_QUIRK_ALWAYS_VALID;
 644                 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 645                 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 646                 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 647         }
 648
 649         td->mtclass.quirks = quirks;
 650 }
 651
 652 static void mt_post_parse(struct mt_device *td)
 653 {
 654         struct mt_fields *f = td->fields;
 655
 656         if (td->touches_by_report > 0) {
 657                 int field_count_per_touch = f->length / td->touches_by_report;
 658                 td->last_slot_field = f->usages[field_count_per_touch - 1];
 659         }
 660 }
 661
 662 static void mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
 663
 664 {
 665         struct mt_device *td = hid_get_drvdata(hdev);
 666         struct mt_class *cls = &td->mtclass;
 667         struct input_dev *input = hi->input;
 668
 669         /* Only initialize slots for MT input devices */
 670         if (!test_bit(ABS_MT_POSITION_X, input->absbit))
 671                 return;
 672
 673         if (!td->maxcontacts)
 674                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 675
 676         mt_post_parse(td);
 677         if (td->serial_maybe)
 678                 mt_post_parse_default_settings(td);
 679
 680         if (cls->is_indirect)
 681                 td->mt_flags |= INPUT_MT_POINTER;
 682
 683         if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 684                 td->mt_flags |= INPUT_MT_DROP_UNUSED;
 685
 686         input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
 687
 688         td->mt_flags = 0;
 689 }
 690
 691 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 692 {
 693         int ret, i;
 694         struct mt_device *td;
 695         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 696
 697         for (i = 0; mt_classes[i].name ; i++) {
 698                 if (id->driver_data == mt_classes[i].name) {
 699                         mtclass = &(mt_classes[i]);
 700                         break;
 701                 }
 702         }
 703
 704         /* This allows the driver to correctly support devices
 705          * that emit events over several HID messages.
 706          */
 707         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 708
 709         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 710         if (!td) {
 711                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 712                 return -ENOMEM;
 713         }
 714         td->mtclass = *mtclass;
 715         td->inputmode = -1;
 716         td->maxcontact_report_id = -1;
 717         hid_set_drvdata(hdev, td);
 718
 719         td->fields = kzalloc(sizeof(struct mt_fields), GFP_KERNEL);
 720         if (!td->fields) {
 721                 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
 722                 ret = -ENOMEM;
 723                 goto fail;
 724         }
 725
 726         if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
 727                 td->serial_maybe = true;
 728
 729         ret = hid_parse(hdev);
 730         if (ret != 0)
 731                 goto fail;
 732
 733         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 734         if (ret)
 735                 goto fail;
 736
 737         ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
 738
 739         mt_set_maxcontacts(hdev);
 740         mt_set_input_mode(hdev);
 741
 742         kfree(td->fields);
 743         td->fields = NULL;
 744
 745         return 0;
 746
 747 fail:
 748         kfree(td->fields);
 749         kfree(td);
 750         return ret;
 751 }
 752
 753 #ifdef CONFIG_PM
 754 static int mt_reset_resume(struct hid_device *hdev)
 755 {
 756         mt_set_maxcontacts(hdev);
 757         mt_set_input_mode(hdev);
 758         return 0;
 759 }
 760
 761 static int mt_resume(struct hid_device *hdev)
 762 {
 763         struct usb_interface *intf;
 764         struct usb_host_interface *interface;
 765         struct usb_device *dev;
 766
 767         if (hdev->bus != BUS_USB)
 768                 return 0;
 769
 770         intf = to_usb_interface(hdev->dev.parent);
 771         interface = intf->cur_altsetting;
 772         dev = hid_to_usb_dev(hdev);
 773
 774         /* Some Elan legacy devices require SET_IDLE to be set on resume.
 775          * It should be safe to send it to other devices too.
 776          * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
 777
 778         usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 779                         HID_REQ_SET_IDLE,
 780                         USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 781                         0, interface->desc.bInterfaceNumber,
 782                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 783
 784         return 0;
 785 }
 786 #endif
 787
 788 static void mt_remove(struct hid_device *hdev)
 789 {
 790         struct mt_device *td = hid_get_drvdata(hdev);
 791         sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
 792         hid_hw_stop(hdev);
 793         kfree(td);
 794         hid_set_drvdata(hdev, NULL);
 795 }
 796
 797 static const struct hid_device_id mt_devices[] = {
 798
 799         /* 3M panels */
 800         { .driver_data = MT_CLS_3M,
 801                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 802                         USB_DEVICE_ID_3M1968) },
 803         { .driver_data = MT_CLS_3M,
 804                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 805                         USB_DEVICE_ID_3M2256) },
 806         { .driver_data = MT_CLS_3M,
 807                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 808                         USB_DEVICE_ID_3M3266) },
 809
 810         /* ActionStar panels */
 811         { .driver_data = MT_CLS_DEFAULT,
 812                 MT_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 813                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 814
 815         /* Atmel panels */
 816         { .driver_data = MT_CLS_SERIAL,
 817                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 818                         USB_DEVICE_ID_ATMEL_MULTITOUCH) },
 819         { .driver_data = MT_CLS_SERIAL,
 820                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 821                         USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
 822
 823         /* Baanto multitouch devices */
 824         { .driver_data = MT_CLS_DEFAULT,
 825                 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
 826                         USB_DEVICE_ID_BAANTO_MT_190W2) },
 827         /* Cando panels */
 828         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 829                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 830                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 831         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 832                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 833                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 834         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 835                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 836                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 837         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 838                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 839                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 840
 841         /* Chunghwa Telecom touch panels */
 842         {  .driver_data = MT_CLS_DEFAULT,
 843                 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
 844                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
 845
 846         /* CVTouch panels */
 847         { .driver_data = MT_CLS_DEFAULT,
 848                 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
 849                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
 850
 851         /* Cypress panel */
 852         { .driver_data = MT_CLS_CYPRESS,
 853                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 854                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 855
 856         /* eGalax devices (resistive) */
 857         { .driver_data = MT_CLS_EGALAX,
 858                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 859                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
 860         { .driver_data = MT_CLS_EGALAX,
 861                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 862                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
 863
 864         /* eGalax devices (capacitive) */
 865         { .driver_data = MT_CLS_EGALAX,
 866                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 867                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
 868         { .driver_data = MT_CLS_EGALAX_SERIAL,
 869                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 870                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
 871         { .driver_data = MT_CLS_EGALAX_SERIAL,
 872                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 873                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
 874         { .driver_data = MT_CLS_EGALAX_SERIAL,
 875                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 876                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
 877         { .driver_data = MT_CLS_EGALAX_SERIAL,
 878                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 879                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
 880         { .driver_data = MT_CLS_EGALAX,
 881                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 882                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
 883         { .driver_data = MT_CLS_EGALAX_SERIAL,
 884                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 885                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
 886         { .driver_data = MT_CLS_EGALAX,
 887                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 888                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
 889         { .driver_data = MT_CLS_EGALAX_SERIAL,
 890                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 891                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
 892         { .driver_data = MT_CLS_EGALAX,
 893                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 894                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
 895         { .driver_data = MT_CLS_EGALAX,
 896                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 897                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
 898         { .driver_data = MT_CLS_EGALAX_SERIAL,
 899                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 900                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
 901         { .driver_data = MT_CLS_EGALAX_SERIAL,
 902                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 903                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
 904         { .driver_data = MT_CLS_EGALAX_SERIAL,
 905                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 906                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
 907         { .driver_data = MT_CLS_EGALAX,
 908                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 909                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
 910         { .driver_data = MT_CLS_EGALAX,
 911                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 912                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
 913         { .driver_data = MT_CLS_EGALAX,
 914                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 915                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
 916
 917         /* Elo TouchSystems IntelliTouch Plus panel */
 918         { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
 919                 MT_USB_DEVICE(USB_VENDOR_ID_ELO,
 920                         USB_DEVICE_ID_ELO_TS2515) },
 921
 922         /* Flatfrog Panels */
 923         { .driver_data = MT_CLS_FLATFROG,
 924                 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
 925                         USB_DEVICE_ID_MULTITOUCH_3200) },
 926
 927         /* GeneralTouch panel */
 928         { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
 929                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 930                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
 931         { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
 932                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 933                         USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
 934
 935         /* Gametel game controller */
 936         { .driver_data = MT_CLS_DEFAULT,
 937                 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
 938                         USB_DEVICE_ID_GAMETEL_MT_MODE) },
 939
 940         /* GoodTouch panels */
 941         { .driver_data = MT_CLS_DEFAULT,
 942                 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
 943                         USB_DEVICE_ID_GOODTOUCH_000f) },
 944
 945         /* Hanvon panels */
 946         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 947                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
 948                         USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
 949
 950         /* Ideacom panel */
 951         { .driver_data = MT_CLS_SERIAL,
 952                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
 953                         USB_DEVICE_ID_IDEACOM_IDC6650) },
 954         { .driver_data = MT_CLS_SERIAL,
 955                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
 956                         USB_DEVICE_ID_IDEACOM_IDC6651) },
 957
 958         /* Ilitek dual touch panel */
 959         {  .driver_data = MT_CLS_DEFAULT,
 960                 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
 961                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
 962
 963         /* IRTOUCH panels */
 964         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 965                 MT_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
 966                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
 967
 968         /* LG Display panels */
 969         { .driver_data = MT_CLS_DEFAULT,
 970                 MT_USB_DEVICE(USB_VENDOR_ID_LG,
 971                         USB_DEVICE_ID_LG_MULTITOUCH) },
 972
 973         /* Lumio panels */
 974         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 975                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 976                         USB_DEVICE_ID_CRYSTALTOUCH) },
 977         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 978                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 979                         USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
 980
 981         /* MosArt panels */
 982         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 983                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
 984                         USB_DEVICE_ID_ASUS_T91MT)},
 985         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 986                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
 987                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
 988         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 989                 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
 990                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
 991
 992         /* Panasonic panels */
 993         { .driver_data = MT_CLS_PANASONIC,
 994                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
 995                         USB_DEVICE_ID_PANABOARD_UBT780) },
 996         { .driver_data = MT_CLS_PANASONIC,
 997                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
 998                         USB_DEVICE_ID_PANABOARD_UBT880) },
 999
1000         /* Novatek Panel */
1001         { .driver_data = MT_CLS_DEFAULT,
1002                 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1003                         USB_DEVICE_ID_NOVATEK_PCT) },
1004
1005         /* PenMount panels */
1006         { .driver_data = MT_CLS_CONFIDENCE,
1007                 MT_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
1008                         USB_DEVICE_ID_PENMOUNT_PCI) },
1009
1010         /* PixArt optical touch screen */
1011         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1012                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1013                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1014         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1015                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1016                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1017         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1018                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1019                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1020
1021         /* PixCir-based panels */
1022         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1023                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON,
1024                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
1025         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1026                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1027                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1028
1029         /* Quanta-based panels */
1030         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1031                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1032                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1033         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1034                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1035                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1036         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1037                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1038                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) },
1039
1040         /* Stantum panels */
1041         { .driver_data = MT_CLS_CONFIDENCE,
1042                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM,
1043                         USB_DEVICE_ID_MTP)},
1044         { .driver_data = MT_CLS_CONFIDENCE,
1045                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1046                         USB_DEVICE_ID_MTP_STM)},
1047         { .driver_data = MT_CLS_CONFIDENCE,
1048                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
1049                         USB_DEVICE_ID_MTP_SITRONIX)},
1050
1051         /* TopSeed panels */
1052         { .driver_data = MT_CLS_TOPSEED,
1053                 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1054                         USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1055
1056         /* Touch International panels */
1057         { .driver_data = MT_CLS_DEFAULT,
1058                 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1059                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1060
1061         /* Unitec panels */
1062         { .driver_data = MT_CLS_DEFAULT,
1063                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1064                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1065         { .driver_data = MT_CLS_DEFAULT,
1066                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1067                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1068         /* XAT */
1069         { .driver_data = MT_CLS_DEFAULT,
1070                 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1071                         USB_DEVICE_ID_XAT_CSR) },
1072
1073         /* Xiroku */
1074         { .driver_data = MT_CLS_DEFAULT,
1075                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1076                         USB_DEVICE_ID_XIROKU_SPX) },
1077         { .driver_data = MT_CLS_DEFAULT,
1078                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1079                         USB_DEVICE_ID_XIROKU_MPX) },
1080         { .driver_data = MT_CLS_DEFAULT,
1081                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1082                         USB_DEVICE_ID_XIROKU_CSR) },
1083         { .driver_data = MT_CLS_DEFAULT,
1084                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1085                         USB_DEVICE_ID_XIROKU_SPX1) },
1086         { .driver_data = MT_CLS_DEFAULT,
1087                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1088                         USB_DEVICE_ID_XIROKU_MPX1) },
1089         { .driver_data = MT_CLS_DEFAULT,
1090                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1091                         USB_DEVICE_ID_XIROKU_CSR1) },
1092         { .driver_data = MT_CLS_DEFAULT,
1093                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1094                         USB_DEVICE_ID_XIROKU_SPX2) },
1095         { .driver_data = MT_CLS_DEFAULT,
1096                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1097                         USB_DEVICE_ID_XIROKU_MPX2) },
1098         { .driver_data = MT_CLS_DEFAULT,
1099                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1100                         USB_DEVICE_ID_XIROKU_CSR2) },
1101
1102         /* Zytronic panels */
1103         { .driver_data = MT_CLS_SERIAL,
1104                 MT_USB_DEVICE(USB_VENDOR_ID_ZYTRONIC,
1105                         USB_DEVICE_ID_ZYTRONIC_ZXY100) },
1106
1107         /* Generic MT device */
1108         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1109         { }
1110 };
1111 MODULE_DEVICE_TABLE(hid, mt_devices);
1112
1113 static const struct hid_usage_id mt_grabbed_usages[] = {
1114         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1115         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1116 };
1117
1118 static struct hid_driver mt_driver = {
1119         .name = "hid-multitouch",
1120         .id_table = mt_devices,
1121         .probe = mt_probe,
1122         .remove = mt_remove,
1123         .input_mapping = mt_input_mapping,
1124         .input_mapped = mt_input_mapped,
1125         .input_configured = mt_input_configured,
1126         .feature_mapping = mt_feature_mapping,
1127         .usage_table = mt_grabbed_usages,
1128         .event = mt_event,
1129 #ifdef CONFIG_PM
1130         .reset_resume = mt_reset_resume,
1131         .resume = mt_resume,
1132 #endif
1133 };
1134
1135 static int __init mt_init(void)
1136 {
1137         return hid_register_driver(&mt_driver);
1138 }
1139
1140 static void __exit mt_exit(void)
1141 {
1142         hid_unregister_driver(&mt_driver);
1143 }
1144
1145 module_init(mt_init);
1146 module_exit(mt_exit);