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