drivers/hid/hid-multitouch.c

   1 /*
   2  *  HID driver for multitouch panels
   3  *
   4  *  Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
   5  *  Copyright (c) 2010-2012 Benjamin Tissoires <benjamin.tissoires@gmail.com>
   6  *  Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
   7  *
   8  *  This code is partly based on hid-egalax.c:
   9  *
  10  *  Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
  11  *  Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
  12  *  Copyright (c) 2010 Canonical, Ltd.
  13  *
  14  *  This code is partly based on hid-3m-pct.c:
  15  *
  16  *  Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
  17  *  Copyright (c) 2010      Henrik Rydberg <rydberg@euromail.se>
  18  *  Copyright (c) 2010      Canonical, Ltd.
  19  *
  20  */
  21
  22 /*
  23  * This program is free software; you can redistribute it and/or modify it
  24  * under the terms of the GNU General Public License as published by the Free
  25  * Software Foundation; either version 2 of the License, or (at your option)
  26  * any later version.
  27  */
  28
  29 #include <linux/device.h>
  30 #include <linux/hid.h>
  31 #include <linux/module.h>
  32 #include <linux/slab.h>
  33 #include <linux/usb.h>
  34 #include <linux/input/mt.h>
  35 #include "usbhid/usbhid.h"
  36
  37
  38 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
  39 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
  40 MODULE_DESCRIPTION("HID multitouch panels");
  41 MODULE_LICENSE("GPL");
  42
  43 #include "hid-ids.h"
  44
  45 /* quirks to control the device */
  46 #define MT_QUIRK_NOT_SEEN_MEANS_UP      (1 << 0)
  47 #define MT_QUIRK_SLOT_IS_CONTACTID      (1 << 1)
  48 #define MT_QUIRK_CYPRESS                (1 << 2)
  49 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER  (1 << 3)
  50 #define MT_QUIRK_ALWAYS_VALID           (1 << 4)
  51 #define MT_QUIRK_VALID_IS_INRANGE       (1 << 5)
  52 #define MT_QUIRK_VALID_IS_CONFIDENCE    (1 << 6)
  53 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE    (1 << 8)
  54
  55 struct mt_slot {
  56         __s32 x, y, p, w, h;
  57         __s32 contactid;        /* the device ContactID assigned to this slot */
  58         bool touch_state;       /* is the touch valid? */
  59         bool seen_in_this_frame;/* has this slot been updated */
  60 };
  61
  62 struct mt_class {
  63         __s32 name;     /* MT_CLS */
  64         __s32 quirks;
  65         __s32 sn_move;  /* Signal/noise ratio for move events */
  66         __s32 sn_width; /* Signal/noise ratio for width events */
  67         __s32 sn_height;        /* Signal/noise ratio for height events */
  68         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
  69         __u8 maxcontacts;
  70         bool is_indirect;       /* true for touchpads */
  71 };
  72
  73 struct mt_fields {
  74         unsigned usages[HID_MAX_FIELDS];
  75         unsigned int length;
  76 };
  77
  78 struct mt_device {
  79         struct mt_slot curdata; /* placeholder of incoming data */
  80         struct mt_class mtclass;        /* our mt device class */
  81         struct mt_fields *fields;       /* temporary placeholder for storing the
  82                                            multitouch fields */
  83         unsigned last_field_index;      /* last field index of the report */
  84         unsigned last_slot_field;       /* the last field of a slot */
  85         __s8 inputmode;         /* InputMode HID feature, -1 if non-existent */
  86         __s8 maxcontact_report_id;      /* Maximum Contact Number HID feature,
  87                                    -1 if non-existent */
  88         __u8 num_received;      /* how many contacts we received */
  89         __u8 num_expected;      /* expected last contact index */
  90         __u8 maxcontacts;
  91         __u8 touches_by_report; /* how many touches are present in one report:
  92                                 * 1 means we should use a serial protocol
  93                                 * > 1 means hybrid (multitouch) protocol */
  94         bool curvalid;          /* is the current contact valid? */
  95         struct mt_slot *slots;
  96 };
  97
  98 /* classes of device behavior */
  99 #define MT_CLS_DEFAULT                          0x0001
 100
 101 #define MT_CLS_SERIAL                           0x0002
 102 #define MT_CLS_CONFIDENCE                       0x0003
 103 #define MT_CLS_CONFIDENCE_CONTACT_ID            0x0004
 104 #define MT_CLS_CONFIDENCE_MINUS_ONE             0x0005
 105 #define MT_CLS_DUAL_INRANGE_CONTACTID           0x0006
 106 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       0x0007
 107 #define MT_CLS_DUAL_NSMU_CONTACTID              0x0008
 108 #define MT_CLS_INRANGE_CONTACTNUMBER            0x0009
 109
 110 /* vendor specific classes */
 111 #define MT_CLS_3M                               0x0101
 112 #define MT_CLS_CYPRESS                          0x0102
 113 #define MT_CLS_EGALAX                           0x0103
 114 #define MT_CLS_EGALAX_SERIAL                    0x0104
 115 #define MT_CLS_TOPSEED                          0x0105
 116 #define MT_CLS_PANASONIC                        0x0106
 117
 118 #define MT_DEFAULT_MAXCONTACT   10
 119
 120 #define MT_USB_DEVICE(v, p)     HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
 121 #define MT_BT_DEVICE(v, p)      HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
 122
 123 /*
 124  * these device-dependent functions determine what slot corresponds
 125  * to a valid contact that was just read.
 126  */
 127
 128 static int cypress_compute_slot(struct mt_device *td)
 129 {
 130         if (td->curdata.contactid != 0 || td->num_received == 0)
 131                 return td->curdata.contactid;
 132         else
 133                 return -1;
 134 }
 135
 136 static int find_slot_from_contactid(struct mt_device *td)
 137 {
 138         int i;
 139         for (i = 0; i < td->maxcontacts; ++i) {
 140                 if (td->slots[i].contactid == td->curdata.contactid &&
 141                         td->slots[i].touch_state)
 142                         return i;
 143         }
 144         for (i = 0; i < td->maxcontacts; ++i) {
 145                 if (!td->slots[i].seen_in_this_frame &&
 146                         !td->slots[i].touch_state)
 147                         return i;
 148         }
 149         /* should not occurs. If this happens that means
 150          * that the device sent more touches that it says
 151          * in the report descriptor. It is ignored then. */
 152         return -1;
 153 }
 154
 155 static struct mt_class mt_classes[] = {
 156         { .name = MT_CLS_DEFAULT,
 157                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 158         { .name = MT_CLS_SERIAL,
 159                 .quirks = MT_QUIRK_ALWAYS_VALID},
 160         { .name = MT_CLS_CONFIDENCE,
 161                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 162         { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
 163                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 164                         MT_QUIRK_SLOT_IS_CONTACTID },
 165         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 166                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 167                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 168         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 169                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 170                         MT_QUIRK_SLOT_IS_CONTACTID,
 171                 .maxcontacts = 2 },
 172         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 173                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 174                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 175                 .maxcontacts = 2 },
 176         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
 177                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 178                         MT_QUIRK_SLOT_IS_CONTACTID,
 179                 .maxcontacts = 2 },
 180         { .name = MT_CLS_INRANGE_CONTACTNUMBER,
 181                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 182                         MT_QUIRK_SLOT_IS_CONTACTNUMBER },
 183
 184         /*
 185          * vendor specific classes
 186          */
 187         { .name = MT_CLS_3M,
 188                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 189                         MT_QUIRK_SLOT_IS_CONTACTID,
 190                 .sn_move = 2048,
 191                 .sn_width = 128,
 192                 .sn_height = 128 },
 193         { .name = MT_CLS_CYPRESS,
 194                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 195                         MT_QUIRK_CYPRESS,
 196                 .maxcontacts = 10 },
 197         { .name = MT_CLS_EGALAX,
 198                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 199                         MT_QUIRK_VALID_IS_INRANGE,
 200                 .sn_move = 4096,
 201                 .sn_pressure = 32,
 202         },
 203         { .name = MT_CLS_EGALAX_SERIAL,
 204                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 205                         MT_QUIRK_ALWAYS_VALID,
 206                 .sn_move = 4096,
 207                 .sn_pressure = 32,
 208         },
 209         { .name = MT_CLS_TOPSEED,
 210                 .quirks = MT_QUIRK_ALWAYS_VALID,
 211                 .is_indirect = true,
 212                 .maxcontacts = 2,
 213         },
 214         { .name = MT_CLS_PANASONIC,
 215                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
 216                 .maxcontacts = 4 },
 217
 218         { }
 219 };
 220
 221 static ssize_t mt_show_quirks(struct device *dev,
 222                            struct device_attribute *attr,
 223                            char *buf)
 224 {
 225         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 226         struct mt_device *td = hid_get_drvdata(hdev);
 227
 228         return sprintf(buf, "%u\n", td->mtclass.quirks);
 229 }
 230
 231 static ssize_t mt_set_quirks(struct device *dev,
 232                           struct device_attribute *attr,
 233                           const char *buf, size_t count)
 234 {
 235         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 236         struct mt_device *td = hid_get_drvdata(hdev);
 237
 238         unsigned long val;
 239
 240         if (kstrtoul(buf, 0, &val))
 241                 return -EINVAL;
 242
 243         td->mtclass.quirks = val;
 244
 245         return count;
 246 }
 247
 248 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
 249
 250 static struct attribute *sysfs_attrs[] = {
 251         &dev_attr_quirks.attr,
 252         NULL
 253 };
 254
 255 static struct attribute_group mt_attribute_group = {
 256         .attrs = sysfs_attrs
 257 };
 258
 259 static void mt_feature_mapping(struct hid_device *hdev,
 260                 struct hid_field *field, struct hid_usage *usage)
 261 {
 262         struct mt_device *td = hid_get_drvdata(hdev);
 263
 264         switch (usage->hid) {
 265         case HID_DG_INPUTMODE:
 266                 td->inputmode = field->report->id;
 267                 break;
 268         case HID_DG_CONTACTMAX:
 269                 td->maxcontact_report_id = field->report->id;
 270                 td->maxcontacts = field->value[0];
 271                 if (td->mtclass.maxcontacts)
 272                         /* check if the maxcontacts is given by the class */
 273                         td->maxcontacts = td->mtclass.maxcontacts;
 274
 275                 break;
 276         }
 277 }
 278
 279 static void set_abs(struct input_dev *input, unsigned int code,
 280                 struct hid_field *field, int snratio)
 281 {
 282         int fmin = field->logical_minimum;
 283         int fmax = field->logical_maximum;
 284         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 285         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 286 }
 287
 288 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
 289                 struct hid_input *hi)
 290 {
 291         struct mt_fields *f = td->fields;
 292
 293         if (f->length >= HID_MAX_FIELDS)
 294                 return;
 295
 296         f->usages[f->length++] = usage->hid;
 297 }
 298
 299 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 300                 struct hid_field *field, struct hid_usage *usage,
 301                 unsigned long **bit, int *max)
 302 {
 303         struct mt_device *td = hid_get_drvdata(hdev);
 304         struct mt_class *cls = &td->mtclass;
 305         int code;
 306
 307         /* Only map fields from TouchScreen or TouchPad collections.
 308         * We need to ignore fields that belong to other collections
 309         * such as Mouse that might have the same GenericDesktop usages. */
 310         if (field->application == HID_DG_TOUCHSCREEN)
 311                 set_bit(INPUT_PROP_DIRECT, hi->input->propbit);
 312         else if (field->application != HID_DG_TOUCHPAD)
 313                 return 0;
 314
 315         /* In case of an indirect device (touchpad), we need to add
 316          * specific BTN_TOOL_* to be handled by the synaptics xorg
 317          * driver.
 318          * We also consider that touchscreens providing buttons are touchpads.
 319          */
 320         if (field->application == HID_DG_TOUCHPAD ||
 321             (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON ||
 322             cls->is_indirect) {
 323                 set_bit(INPUT_PROP_POINTER, hi->input->propbit);
 324                 set_bit(BTN_TOOL_FINGER, hi->input->keybit);
 325                 set_bit(BTN_TOOL_DOUBLETAP, hi->input->keybit);
 326                 set_bit(BTN_TOOL_TRIPLETAP, hi->input->keybit);
 327                 set_bit(BTN_TOOL_QUADTAP, hi->input->keybit);
 328         }
 329
 330         /* eGalax devices provide a Digitizer.Stylus input which overrides
 331          * the correct Digitizers.Finger X/Y ranges.
 332          * Let's just ignore this input. */
 333         if (field->physical == HID_DG_STYLUS)
 334                 return -1;
 335
 336         switch (usage->hid & HID_USAGE_PAGE) {
 337
 338         case HID_UP_GENDESK:
 339                 switch (usage->hid) {
 340                 case HID_GD_X:
 341                         hid_map_usage(hi, usage, bit, max,
 342                                         EV_ABS, ABS_MT_POSITION_X);
 343                         set_abs(hi->input, ABS_MT_POSITION_X, field,
 344                                 cls->sn_move);
 345                         /* touchscreen emulation */
 346                         set_abs(hi->input, ABS_X, field, cls->sn_move);
 347                         mt_store_field(usage, td, hi);
 348                         td->last_field_index = field->index;
 349                         return 1;
 350                 case HID_GD_Y:
 351                         hid_map_usage(hi, usage, bit, max,
 352                                         EV_ABS, ABS_MT_POSITION_Y);
 353                         set_abs(hi->input, ABS_MT_POSITION_Y, field,
 354                                 cls->sn_move);
 355                         /* touchscreen emulation */
 356                         set_abs(hi->input, ABS_Y, field, cls->sn_move);
 357                         mt_store_field(usage, td, hi);
 358                         td->last_field_index = field->index;
 359                         return 1;
 360                 }
 361                 return 0;
 362
 363         case HID_UP_DIGITIZER:
 364                 switch (usage->hid) {
 365                 case HID_DG_INRANGE:
 366                         mt_store_field(usage, td, hi);
 367                         td->last_field_index = field->index;
 368                         return 1;
 369                 case HID_DG_CONFIDENCE:
 370                         mt_store_field(usage, td, hi);
 371                         td->last_field_index = field->index;
 372                         return 1;
 373                 case HID_DG_TIPSWITCH:
 374                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 375                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 376                         mt_store_field(usage, td, hi);
 377                         td->last_field_index = field->index;
 378                         return 1;
 379                 case HID_DG_CONTACTID:
 380                         if (!td->maxcontacts)
 381                                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 382                         input_mt_init_slots(hi->input, td->maxcontacts);
 383                         mt_store_field(usage, td, hi);
 384                         td->last_field_index = field->index;
 385                         td->touches_by_report++;
 386                         return 1;
 387                 case HID_DG_WIDTH:
 388                         hid_map_usage(hi, usage, bit, max,
 389                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 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                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 399                                 cls->sn_height);
 400                         input_set_abs_params(hi->input,
 401                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 402                         mt_store_field(usage, td, hi);
 403                         td->last_field_index = field->index;
 404                         return 1;
 405                 case HID_DG_TIPPRESSURE:
 406                         hid_map_usage(hi, usage, bit, max,
 407                                         EV_ABS, ABS_MT_PRESSURE);
 408                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 409                                 cls->sn_pressure);
 410                         /* touchscreen emulation */
 411                         set_abs(hi->input, ABS_PRESSURE, field,
 412                                 cls->sn_pressure);
 413                         mt_store_field(usage, td, hi);
 414                         td->last_field_index = field->index;
 415                         return 1;
 416                 case HID_DG_CONTACTCOUNT:
 417                         td->last_field_index = field->index;
 418                         return 1;
 419                 case HID_DG_CONTACTMAX:
 420                         /* we don't set td->last_slot_field as contactcount and
 421                          * contact max are global to the report */
 422                         td->last_field_index = field->index;
 423                         return -1;
 424                 }
 425                 case HID_DG_TOUCH:
 426                         /* Legacy devices use TIPSWITCH and not TOUCH.
 427                          * Let's just ignore this field. */
 428                         return -1;
 429                 /* let hid-input decide for the others */
 430                 return 0;
 431
 432         case HID_UP_BUTTON:
 433                 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
 434                 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
 435                 input_set_capability(hi->input, EV_KEY, code);
 436                 return 1;
 437
 438         case 0xff000000:
 439                 /* we do not want to map these: no input-oriented meaning */
 440                 return -1;
 441         }
 442
 443         return 0;
 444 }
 445
 446 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 447                 struct hid_field *field, struct hid_usage *usage,
 448                 unsigned long **bit, int *max)
 449 {
 450         if (usage->type == EV_KEY || usage->type == EV_ABS)
 451                 set_bit(usage->type, hi->input->evbit);
 452
 453         return -1;
 454 }
 455
 456 static int mt_compute_slot(struct mt_device *td)
 457 {
 458         __s32 quirks = td->mtclass.quirks;
 459
 460         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 461                 return td->curdata.contactid;
 462
 463         if (quirks & MT_QUIRK_CYPRESS)
 464                 return cypress_compute_slot(td);
 465
 466         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 467                 return td->num_received;
 468
 469         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 470                 return td->curdata.contactid - 1;
 471
 472         return find_slot_from_contactid(td);
 473 }
 474
 475 /*
 476  * this function is called when a whole contact has been processed,
 477  * so that it can assign it to a slot and store the data there
 478  */
 479 static void mt_complete_slot(struct mt_device *td)
 480 {
 481         td->curdata.seen_in_this_frame = true;
 482         if (td->curvalid) {
 483                 int slotnum = mt_compute_slot(td);
 484
 485                 if (slotnum >= 0 && slotnum < td->maxcontacts)
 486                         td->slots[slotnum] = td->curdata;
 487         }
 488         td->num_received++;
 489 }
 490
 491
 492 /*
 493  * this function is called when a whole packet has been received and processed,
 494  * so that it can decide what to send to the input layer.
 495  */
 496 static void mt_emit_event(struct mt_device *td, struct input_dev *input)
 497 {
 498         int i;
 499
 500         for (i = 0; i < td->maxcontacts; ++i) {
 501                 struct mt_slot *s = &(td->slots[i]);
 502                 if ((td->mtclass.quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
 503                         !s->seen_in_this_frame) {
 504                         s->touch_state = false;
 505                 }
 506
 507                 input_mt_slot(input, i);
 508                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 509                         s->touch_state);
 510                 if (s->touch_state) {
 511                         /* this finger is on the screen */
 512                         int wide = (s->w > s->h);
 513                         /* divided by two to match visual scale of touch */
 514                         int major = max(s->w, s->h) >> 1;
 515                         int minor = min(s->w, s->h) >> 1;
 516
 517                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 518                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 519                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 520                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 521                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 522                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 523                 }
 524                 s->seen_in_this_frame = false;
 525
 526         }
 527
 528         input_mt_report_pointer_emulation(input, true);
 529         input_sync(input);
 530         td->num_received = 0;
 531 }
 532
 533
 534
 535 static int mt_event(struct hid_device *hid, struct hid_field *field,
 536                                 struct hid_usage *usage, __s32 value)
 537 {
 538         struct mt_device *td = hid_get_drvdata(hid);
 539         __s32 quirks = td->mtclass.quirks;
 540
 541         if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
 542                 switch (usage->hid) {
 543                 case HID_DG_INRANGE:
 544                         if (quirks & MT_QUIRK_ALWAYS_VALID)
 545                                 td->curvalid = true;
 546                         else if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 547                                 td->curvalid = value;
 548                         break;
 549                 case HID_DG_TIPSWITCH:
 550                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 551                                 td->curvalid = value;
 552                         td->curdata.touch_state = value;
 553                         break;
 554                 case HID_DG_CONFIDENCE:
 555                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 556                                 td->curvalid = value;
 557                         break;
 558                 case HID_DG_CONTACTID:
 559                         td->curdata.contactid = value;
 560                         break;
 561                 case HID_DG_TIPPRESSURE:
 562                         td->curdata.p = value;
 563                         break;
 564                 case HID_GD_X:
 565                         td->curdata.x = value;
 566                         break;
 567                 case HID_GD_Y:
 568                         td->curdata.y = value;
 569                         break;
 570                 case HID_DG_WIDTH:
 571                         td->curdata.w = value;
 572                         break;
 573                 case HID_DG_HEIGHT:
 574                         td->curdata.h = value;
 575                         break;
 576                 case HID_DG_CONTACTCOUNT:
 577                         /*
 578                          * Includes multi-packet support where subsequent
 579                          * packets are sent with zero contactcount.
 580                          */
 581                         if (value)
 582                                 td->num_expected = value;
 583                         break;
 584                 case HID_DG_TOUCH:
 585                         /* do nothing */
 586                         break;
 587
 588                 default:
 589                         /* fallback to the generic hidinput handling */
 590                         return 0;
 591                 }
 592
 593                 if (usage->hid == td->last_slot_field)
 594                         mt_complete_slot(td);
 595
 596                 if (field->index == td->last_field_index
 597                         && td->num_received >= td->num_expected)
 598                         mt_emit_event(td, field->hidinput->input);
 599
 600         }
 601
 602         /* we have handled the hidinput part, now remains hiddev */
 603         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 604                 hid->hiddev_hid_event(hid, field, usage, value);
 605
 606         return 1;
 607 }
 608
 609 static void mt_set_input_mode(struct hid_device *hdev)
 610 {
 611         struct mt_device *td = hid_get_drvdata(hdev);
 612         struct hid_report *r;
 613         struct hid_report_enum *re;
 614
 615         if (td->inputmode < 0)
 616                 return;
 617
 618         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 619         r = re->report_id_hash[td->inputmode];
 620         if (r) {
 621                 r->field[0]->value[0] = 0x02;
 622                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
 623         }
 624 }
 625
 626 static void mt_set_maxcontacts(struct hid_device *hdev)
 627 {
 628         struct mt_device *td = hid_get_drvdata(hdev);
 629         struct hid_report *r;
 630         struct hid_report_enum *re;
 631         int fieldmax, max;
 632
 633         if (td->maxcontact_report_id < 0)
 634                 return;
 635
 636         if (!td->mtclass.maxcontacts)
 637                 return;
 638
 639         re = &hdev->report_enum[HID_FEATURE_REPORT];
 640         r = re->report_id_hash[td->maxcontact_report_id];
 641         if (r) {
 642                 max = td->mtclass.maxcontacts;
 643                 fieldmax = r->field[0]->logical_maximum;
 644                 max = min(fieldmax, max);
 645                 if (r->field[0]->value[0] != max) {
 646                         r->field[0]->value[0] = max;
 647                         usbhid_submit_report(hdev, r, USB_DIR_OUT);
 648                 }
 649         }
 650 }
 651
 652 static void mt_post_parse_default_settings(struct mt_device *td)
 653 {
 654         __s32 quirks = td->mtclass.quirks;
 655
 656         /* unknown serial device needs special quirks */
 657         if (td->touches_by_report == 1) {
 658                 quirks |= MT_QUIRK_ALWAYS_VALID;
 659                 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 660                 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 661                 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 662         }
 663
 664         td->mtclass.quirks = quirks;
 665 }
 666
 667 static void mt_post_parse(struct mt_device *td)
 668 {
 669         struct mt_fields *f = td->fields;
 670
 671         if (td->touches_by_report > 0) {
 672                 int field_count_per_touch = f->length / td->touches_by_report;
 673                 td->last_slot_field = f->usages[field_count_per_touch - 1];
 674         }
 675 }
 676
 677 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 678 {
 679         int ret, i;
 680         struct mt_device *td;
 681         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 682
 683         if (id) {
 684                 for (i = 0; mt_classes[i].name ; i++) {
 685                         if (id->driver_data == mt_classes[i].name) {
 686                                 mtclass = &(mt_classes[i]);
 687                                 break;
 688                         }
 689                 }
 690         }
 691
 692         /* This allows the driver to correctly support devices
 693          * that emit events over several HID messages.
 694          */
 695         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 696
 697         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 698         if (!td) {
 699                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 700                 return -ENOMEM;
 701         }
 702         td->mtclass = *mtclass;
 703         td->inputmode = -1;
 704         td->maxcontact_report_id = -1;
 705         hid_set_drvdata(hdev, td);
 706
 707         td->fields = kzalloc(sizeof(struct mt_fields), GFP_KERNEL);
 708         if (!td->fields) {
 709                 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
 710                 ret = -ENOMEM;
 711                 goto fail;
 712         }
 713
 714         ret = hid_parse(hdev);
 715         if (ret != 0)
 716                 goto fail;
 717
 718         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 719         if (ret)
 720                 goto fail;
 721
 722         mt_post_parse(td);
 723
 724         if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
 725                 mt_post_parse_default_settings(td);
 726
 727         td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
 728                                 GFP_KERNEL);
 729         if (!td->slots) {
 730                 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
 731                 hid_hw_stop(hdev);
 732                 ret = -ENOMEM;
 733                 goto fail;
 734         }
 735
 736         ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
 737
 738         mt_set_maxcontacts(hdev);
 739         mt_set_input_mode(hdev);
 740
 741         kfree(td->fields);
 742         td->fields = NULL;
 743
 744         return 0;
 745
 746 fail:
 747         kfree(td->fields);
 748         kfree(td);
 749         return ret;
 750 }
 751
 752 #ifdef CONFIG_PM
 753 static int mt_reset_resume(struct hid_device *hdev)
 754 {
 755         mt_set_maxcontacts(hdev);
 756         mt_set_input_mode(hdev);
 757         return 0;
 758 }
 759 #endif
 760
 761 static void mt_remove(struct hid_device *hdev)
 762 {
 763         struct mt_device *td = hid_get_drvdata(hdev);
 764         sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
 765         hid_hw_stop(hdev);
 766         kfree(td->slots);
 767         kfree(td);
 768         hid_set_drvdata(hdev, NULL);
 769 }
 770
 771 static const struct hid_device_id mt_devices[] = {
 772
 773         /* 3M panels */
 774         { .driver_data = MT_CLS_3M,
 775                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 776                         USB_DEVICE_ID_3M1968) },
 777         { .driver_data = MT_CLS_3M,
 778                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 779                         USB_DEVICE_ID_3M2256) },
 780         { .driver_data = MT_CLS_3M,
 781                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 782                         USB_DEVICE_ID_3M3266) },
 783
 784         /* ActionStar panels */
 785         { .driver_data = MT_CLS_DEFAULT,
 786                 MT_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 787                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 788
 789         /* Atmel panels */
 790         { .driver_data = MT_CLS_SERIAL,
 791                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 792                         USB_DEVICE_ID_ATMEL_MULTITOUCH) },
 793         { .driver_data = MT_CLS_SERIAL,
 794                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 795                         USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
 796
 797         /* Baanto multitouch devices */
 798         { .driver_data = MT_CLS_DEFAULT,
 799                 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
 800                         USB_DEVICE_ID_BAANTO_MT_190W2) },
 801         /* Cando panels */
 802         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 803                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 804                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 805         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 806                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 807                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 808         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 809                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 810                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 811         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 812                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 813                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 814
 815         /* Chunghwa Telecom touch panels */
 816         {  .driver_data = MT_CLS_DEFAULT,
 817                 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
 818                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
 819
 820         /* CVTouch panels */
 821         { .driver_data = MT_CLS_DEFAULT,
 822                 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
 823                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
 824
 825         /* Cypress panel */
 826         { .driver_data = MT_CLS_CYPRESS,
 827                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 828                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 829
 830         /* eGalax devices (resistive) */
 831         { .driver_data = MT_CLS_EGALAX,
 832                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 833                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
 834         { .driver_data = MT_CLS_EGALAX,
 835                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 836                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
 837
 838         /* eGalax devices (capacitive) */
 839         { .driver_data = MT_CLS_EGALAX,
 840                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 841                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
 842         { .driver_data = MT_CLS_EGALAX_SERIAL,
 843                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 844                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
 845         { .driver_data = MT_CLS_EGALAX_SERIAL,
 846                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 847                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
 848         { .driver_data = MT_CLS_EGALAX_SERIAL,
 849                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 850                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
 851         { .driver_data = MT_CLS_EGALAX_SERIAL,
 852                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 853                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
 854         { .driver_data = MT_CLS_EGALAX,
 855                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 856                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
 857         { .driver_data = MT_CLS_EGALAX_SERIAL,
 858                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 859                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
 860         { .driver_data = MT_CLS_EGALAX,
 861                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 862                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
 863         { .driver_data = MT_CLS_EGALAX_SERIAL,
 864                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 865                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
 866         { .driver_data = MT_CLS_EGALAX,
 867                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 868                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
 869         { .driver_data = MT_CLS_EGALAX,
 870                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 871                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
 872         { .driver_data = MT_CLS_EGALAX_SERIAL,
 873                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 874                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
 875         { .driver_data = MT_CLS_EGALAX_SERIAL,
 876                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 877                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
 878
 879         /* Elo TouchSystems IntelliTouch Plus panel */
 880         { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
 881                 MT_USB_DEVICE(USB_VENDOR_ID_ELO,
 882                         USB_DEVICE_ID_ELO_TS2515) },
 883
 884         /* GeneralTouch panel */
 885         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 886                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 887                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
 888
 889         /* Gametel game controller */
 890         { .driver_data = MT_CLS_DEFAULT,
 891                 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
 892                         USB_DEVICE_ID_GAMETEL_MT_MODE) },
 893
 894         /* GoodTouch panels */
 895         { .driver_data = MT_CLS_DEFAULT,
 896                 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
 897                         USB_DEVICE_ID_GOODTOUCH_000f) },
 898
 899         /* Hanvon panels */
 900         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 901                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
 902                         USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
 903
 904         /* Ideacom panel */
 905         { .driver_data = MT_CLS_SERIAL,
 906                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
 907                         USB_DEVICE_ID_IDEACOM_IDC6650) },
 908         { .driver_data = MT_CLS_SERIAL,
 909                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
 910                         USB_DEVICE_ID_IDEACOM_IDC6651) },
 911
 912         /* Ilitek dual touch panel */
 913         {  .driver_data = MT_CLS_DEFAULT,
 914                 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
 915                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
 916
 917         /* IRTOUCH panels */
 918         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 919                 MT_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
 920                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
 921
 922         /* LG Display panels */
 923         { .driver_data = MT_CLS_DEFAULT,
 924                 MT_USB_DEVICE(USB_VENDOR_ID_LG,
 925                         USB_DEVICE_ID_LG_MULTITOUCH) },
 926
 927         /* Lumio panels */
 928         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 929                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 930                         USB_DEVICE_ID_CRYSTALTOUCH) },
 931         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 932                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 933                         USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
 934
 935         /* MosArt panels */
 936         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 937                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
 938                         USB_DEVICE_ID_ASUS_T91MT)},
 939         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 940                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
 941                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
 942         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 943                 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
 944                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
 945
 946         /* Panasonic panels */
 947         { .driver_data = MT_CLS_PANASONIC,
 948                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
 949                         USB_DEVICE_ID_PANABOARD_UBT780) },
 950         { .driver_data = MT_CLS_PANASONIC,
 951                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
 952                         USB_DEVICE_ID_PANABOARD_UBT880) },
 953
 954         /* Novatek Panel */
 955         { .driver_data = MT_CLS_DEFAULT,
 956                 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
 957                         USB_DEVICE_ID_NOVATEK_PCT) },
 958
 959         /* PenMount panels */
 960         { .driver_data = MT_CLS_CONFIDENCE,
 961                 MT_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
 962                         USB_DEVICE_ID_PENMOUNT_PCI) },
 963
 964         /* PixArt optical touch screen */
 965         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
 966                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
 967                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
 968         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
 969                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
 970                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
 971         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
 972                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
 973                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
 974
 975         /* PixCir-based panels */
 976         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 977                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON,
 978                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
 979         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 980                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 981                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
 982
 983         /* Quanta-based panels */
 984         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
 985                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
 986                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
 987         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
 988                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
 989                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
 990         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
 991                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
 992                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) },
 993
 994         /* Stantum panels */
 995         { .driver_data = MT_CLS_CONFIDENCE,
 996                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 997                         USB_DEVICE_ID_MTP)},
 998         { .driver_data = MT_CLS_CONFIDENCE,
 999                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1000                         USB_DEVICE_ID_MTP_STM)},
1001         { .driver_data = MT_CLS_CONFIDENCE,
1002                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
1003                         USB_DEVICE_ID_MTP_SITRONIX)},
1004
1005         /* TopSeed panels */
1006         { .driver_data = MT_CLS_TOPSEED,
1007                 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1008                         USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1009
1010         /* Touch International panels */
1011         { .driver_data = MT_CLS_DEFAULT,
1012                 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1013                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1014
1015         /* Unitec panels */
1016         { .driver_data = MT_CLS_DEFAULT,
1017                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1018                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1019         { .driver_data = MT_CLS_DEFAULT,
1020                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1021                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1022         /* XAT */
1023         { .driver_data = MT_CLS_DEFAULT,
1024                 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1025                         USB_DEVICE_ID_XAT_CSR) },
1026
1027         /* Xiroku */
1028         { .driver_data = MT_CLS_DEFAULT,
1029                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1030                         USB_DEVICE_ID_XIROKU_SPX) },
1031         { .driver_data = MT_CLS_DEFAULT,
1032                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1033                         USB_DEVICE_ID_XIROKU_MPX) },
1034         { .driver_data = MT_CLS_DEFAULT,
1035                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1036                         USB_DEVICE_ID_XIROKU_CSR) },
1037         { .driver_data = MT_CLS_DEFAULT,
1038                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1039                         USB_DEVICE_ID_XIROKU_SPX1) },
1040         { .driver_data = MT_CLS_DEFAULT,
1041                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1042                         USB_DEVICE_ID_XIROKU_MPX1) },
1043         { .driver_data = MT_CLS_DEFAULT,
1044                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1045                         USB_DEVICE_ID_XIROKU_CSR1) },
1046         { .driver_data = MT_CLS_DEFAULT,
1047                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1048                         USB_DEVICE_ID_XIROKU_SPX2) },
1049         { .driver_data = MT_CLS_DEFAULT,
1050                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1051                         USB_DEVICE_ID_XIROKU_MPX2) },
1052         { .driver_data = MT_CLS_DEFAULT,
1053                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1054                         USB_DEVICE_ID_XIROKU_CSR2) },
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         .feature_mapping = mt_feature_mapping,
1075         .usage_table = mt_grabbed_usages,
1076         .event = mt_event,
1077 #ifdef CONFIG_PM
1078         .reset_resume = mt_reset_resume,
1079 #endif
1080 };
1081
1082 static int __init mt_init(void)
1083 {
1084         return hid_register_driver(&mt_driver);
1085 }
1086
1087 static void __exit mt_exit(void)
1088 {
1089         hid_unregister_driver(&mt_driver);
1090 }
1091
1092 module_init(mt_init);
1093 module_exit(mt_exit);