drivers/hid/hid-multitouch.c

   1 /*
   2  *  HID driver for multitouch panels
   3  *
   4  *  Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
   5  *  Copyright (c) 2010-2012 Benjamin Tissoires <benjamin.tissoires@gmail.com>
   6  *  Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
   7  *
   8  *  This code is partly based on hid-egalax.c:
   9  *
  10  *  Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
  11  *  Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
  12  *  Copyright (c) 2010 Canonical, Ltd.
  13  *
  14  *  This code is partly based on hid-3m-pct.c:
  15  *
  16  *  Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
  17  *  Copyright (c) 2010      Henrik Rydberg <rydberg@euromail.se>
  18  *  Copyright (c) 2010      Canonical, Ltd.
  19  *
  20  */
  21
  22 /*
  23  * This program is free software; you can redistribute it and/or modify it
  24  * under the terms of the GNU General Public License as published by the Free
  25  * Software Foundation; either version 2 of the License, or (at your option)
  26  * any later version.
  27  */
  28
  29 #include <linux/device.h>
  30 #include <linux/hid.h>
  31 #include <linux/module.h>
  32 #include <linux/slab.h>
  33 #include <linux/usb.h>
  34 #include <linux/input/mt.h>
  35 #include "usbhid/usbhid.h"
  36
  37
  38 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
  39 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
  40 MODULE_DESCRIPTION("HID multitouch panels");
  41 MODULE_LICENSE("GPL");
  42
  43 #include "hid-ids.h"
  44
  45 /* quirks to control the device */
  46 #define MT_QUIRK_NOT_SEEN_MEANS_UP      (1 << 0)
  47 #define MT_QUIRK_SLOT_IS_CONTACTID      (1 << 1)
  48 #define MT_QUIRK_CYPRESS                (1 << 2)
  49 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER  (1 << 3)
  50 #define MT_QUIRK_ALWAYS_VALID           (1 << 4)
  51 #define MT_QUIRK_VALID_IS_INRANGE       (1 << 5)
  52 #define MT_QUIRK_VALID_IS_CONFIDENCE    (1 << 6)
  53 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE    (1 << 8)
  54
  55 struct mt_slot {
  56         __s32 x, y, p, w, h;
  57         __s32 contactid;        /* the device ContactID assigned to this slot */
  58         bool touch_state;       /* is the touch valid? */
  59         bool seen_in_this_frame;/* has this slot been updated */
  60 };
  61
  62 struct mt_class {
  63         __s32 name;     /* MT_CLS */
  64         __s32 quirks;
  65         __s32 sn_move;  /* Signal/noise ratio for move events */
  66         __s32 sn_width; /* Signal/noise ratio for width events */
  67         __s32 sn_height;        /* Signal/noise ratio for height events */
  68         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
  69         __u8 maxcontacts;
  70         bool is_indirect;       /* true for touchpads */
  71 };
  72
  73 struct mt_fields {
  74         unsigned usages[HID_MAX_FIELDS];
  75         unsigned int length;
  76 };
  77
  78 struct mt_device {
  79         struct mt_slot curdata; /* placeholder of incoming data */
  80         struct mt_class mtclass;        /* our mt device class */
  81         struct mt_fields *fields;       /* temporary placeholder for storing the
  82                                            multitouch fields */
  83         unsigned last_field_index;      /* last field index of the report */
  84         unsigned last_slot_field;       /* the last field of a slot */
  85         __s8 inputmode;         /* InputMode HID feature, -1 if non-existent */
  86         __s8 inputmode_index;   /* InputMode HID feature index in the report */
  87         __s8 maxcontact_report_id;      /* Maximum Contact Number HID feature,
  88                                    -1 if non-existent */
  89         __u8 num_received;      /* how many contacts we received */
  90         __u8 num_expected;      /* expected last contact index */
  91         __u8 maxcontacts;
  92         __u8 touches_by_report; /* how many touches are present in one report:
  93                                 * 1 means we should use a serial protocol
  94                                 * > 1 means hybrid (multitouch) protocol */
  95         bool curvalid;          /* is the current contact valid? */
  96         struct mt_slot *slots;
  97 };
  98
  99 /* classes of device behavior */
 100 #define MT_CLS_DEFAULT                          0x0001
 101
 102 #define MT_CLS_SERIAL                           0x0002
 103 #define MT_CLS_CONFIDENCE                       0x0003
 104 #define MT_CLS_CONFIDENCE_CONTACT_ID            0x0004
 105 #define MT_CLS_CONFIDENCE_MINUS_ONE             0x0005
 106 #define MT_CLS_DUAL_INRANGE_CONTACTID           0x0006
 107 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       0x0007
 108 #define MT_CLS_DUAL_NSMU_CONTACTID              0x0008
 109 #define MT_CLS_INRANGE_CONTACTNUMBER            0x0009
 110
 111 /* vendor specific classes */
 112 #define MT_CLS_3M                               0x0101
 113 #define MT_CLS_CYPRESS                          0x0102
 114 #define MT_CLS_EGALAX                           0x0103
 115 #define MT_CLS_EGALAX_SERIAL                    0x0104
 116 #define MT_CLS_TOPSEED                          0x0105
 117 #define MT_CLS_PANASONIC                        0x0106
 118
 119 #define MT_DEFAULT_MAXCONTACT   10
 120
 121 #define MT_USB_DEVICE(v, p)     HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
 122 #define MT_BT_DEVICE(v, p)      HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
 123
 124 /*
 125  * these device-dependent functions determine what slot corresponds
 126  * to a valid contact that was just read.
 127  */
 128
 129 static int cypress_compute_slot(struct mt_device *td)
 130 {
 131         if (td->curdata.contactid != 0 || td->num_received == 0)
 132                 return td->curdata.contactid;
 133         else
 134                 return -1;
 135 }
 136
 137 static int find_slot_from_contactid(struct mt_device *td)
 138 {
 139         int i;
 140         for (i = 0; i < td->maxcontacts; ++i) {
 141                 if (td->slots[i].contactid == td->curdata.contactid &&
 142                         td->slots[i].touch_state)
 143                         return i;
 144         }
 145         for (i = 0; i < td->maxcontacts; ++i) {
 146                 if (!td->slots[i].seen_in_this_frame &&
 147                         !td->slots[i].touch_state)
 148                         return i;
 149         }
 150         /* should not occurs. If this happens that means
 151          * that the device sent more touches that it says
 152          * in the report descriptor. It is ignored then. */
 153         return -1;
 154 }
 155
 156 static struct mt_class mt_classes[] = {
 157         { .name = MT_CLS_DEFAULT,
 158                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 159         { .name = MT_CLS_SERIAL,
 160                 .quirks = MT_QUIRK_ALWAYS_VALID},
 161         { .name = MT_CLS_CONFIDENCE,
 162                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 163         { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
 164                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 165                         MT_QUIRK_SLOT_IS_CONTACTID },
 166         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 167                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 168                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 169         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 170                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 171                         MT_QUIRK_SLOT_IS_CONTACTID,
 172                 .maxcontacts = 2 },
 173         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 174                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 175                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 176                 .maxcontacts = 2 },
 177         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
 178                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 179                         MT_QUIRK_SLOT_IS_CONTACTID,
 180                 .maxcontacts = 2 },
 181         { .name = MT_CLS_INRANGE_CONTACTNUMBER,
 182                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 183                         MT_QUIRK_SLOT_IS_CONTACTNUMBER },
 184
 185         /*
 186          * vendor specific classes
 187          */
 188         { .name = MT_CLS_3M,
 189                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 190                         MT_QUIRK_SLOT_IS_CONTACTID,
 191                 .sn_move = 2048,
 192                 .sn_width = 128,
 193                 .sn_height = 128 },
 194         { .name = MT_CLS_CYPRESS,
 195                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 196                         MT_QUIRK_CYPRESS,
 197                 .maxcontacts = 10 },
 198         { .name = MT_CLS_EGALAX,
 199                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 200                         MT_QUIRK_VALID_IS_INRANGE,
 201                 .sn_move = 4096,
 202                 .sn_pressure = 32,
 203         },
 204         { .name = MT_CLS_EGALAX_SERIAL,
 205                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 206                         MT_QUIRK_ALWAYS_VALID,
 207                 .sn_move = 4096,
 208                 .sn_pressure = 32,
 209         },
 210         { .name = MT_CLS_TOPSEED,
 211                 .quirks = MT_QUIRK_ALWAYS_VALID,
 212                 .is_indirect = true,
 213                 .maxcontacts = 2,
 214         },
 215         { .name = MT_CLS_PANASONIC,
 216                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
 217                 .maxcontacts = 4 },
 218
 219         { }
 220 };
 221
 222 static ssize_t mt_show_quirks(struct device *dev,
 223                            struct device_attribute *attr,
 224                            char *buf)
 225 {
 226         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 227         struct mt_device *td = hid_get_drvdata(hdev);
 228
 229         return sprintf(buf, "%u\n", td->mtclass.quirks);
 230 }
 231
 232 static ssize_t mt_set_quirks(struct device *dev,
 233                           struct device_attribute *attr,
 234                           const char *buf, size_t count)
 235 {
 236         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 237         struct mt_device *td = hid_get_drvdata(hdev);
 238
 239         unsigned long val;
 240
 241         if (kstrtoul(buf, 0, &val))
 242                 return -EINVAL;
 243
 244         td->mtclass.quirks = val;
 245
 246         return count;
 247 }
 248
 249 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
 250
 251 static struct attribute *sysfs_attrs[] = {
 252         &dev_attr_quirks.attr,
 253         NULL
 254 };
 255
 256 static struct attribute_group mt_attribute_group = {
 257         .attrs = sysfs_attrs
 258 };
 259
 260 static void mt_feature_mapping(struct hid_device *hdev,
 261                 struct hid_field *field, struct hid_usage *usage)
 262 {
 263         struct mt_device *td = hid_get_drvdata(hdev);
 264         int i;
 265
 266         switch (usage->hid) {
 267         case HID_DG_INPUTMODE:
 268                 td->inputmode = field->report->id;
 269                 td->inputmode_index = 0; /* has to be updated below */
 270
 271                 for (i=0; i < field->maxusage; i++) {
 272                         if (field->usage[i].hid == usage->hid) {
 273                                 td->inputmode_index = i;
 274                                 break;
 275                         }
 276                 }
 277
 278                 break;
 279         case HID_DG_CONTACTMAX:
 280                 td->maxcontact_report_id = field->report->id;
 281                 td->maxcontacts = field->value[0];
 282                 if (td->mtclass.maxcontacts)
 283                         /* check if the maxcontacts is given by the class */
 284                         td->maxcontacts = td->mtclass.maxcontacts;
 285
 286                 break;
 287         }
 288 }
 289
 290 static void set_abs(struct input_dev *input, unsigned int code,
 291                 struct hid_field *field, int snratio)
 292 {
 293         int fmin = field->logical_minimum;
 294         int fmax = field->logical_maximum;
 295         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 296         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 297 }
 298
 299 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
 300                 struct hid_input *hi)
 301 {
 302         struct mt_fields *f = td->fields;
 303
 304         if (f->length >= HID_MAX_FIELDS)
 305                 return;
 306
 307         f->usages[f->length++] = usage->hid;
 308 }
 309
 310 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 311                 struct hid_field *field, struct hid_usage *usage,
 312                 unsigned long **bit, int *max)
 313 {
 314         struct mt_device *td = hid_get_drvdata(hdev);
 315         struct mt_class *cls = &td->mtclass;
 316         int code;
 317
 318         /* Only map fields from TouchScreen or TouchPad collections.
 319         * We need to ignore fields that belong to other collections
 320         * such as Mouse that might have the same GenericDesktop usages. */
 321         if (field->application == HID_DG_TOUCHSCREEN)
 322                 set_bit(INPUT_PROP_DIRECT, hi->input->propbit);
 323         else if (field->application != HID_DG_TOUCHPAD)
 324                 return 0;
 325
 326         /* In case of an indirect device (touchpad), we need to add
 327          * specific BTN_TOOL_* to be handled by the synaptics xorg
 328          * driver.
 329          * We also consider that touchscreens providing buttons are touchpads.
 330          */
 331         if (field->application == HID_DG_TOUCHPAD ||
 332             (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON ||
 333             cls->is_indirect) {
 334                 set_bit(INPUT_PROP_POINTER, hi->input->propbit);
 335                 set_bit(BTN_TOOL_FINGER, hi->input->keybit);
 336                 set_bit(BTN_TOOL_DOUBLETAP, hi->input->keybit);
 337                 set_bit(BTN_TOOL_TRIPLETAP, hi->input->keybit);
 338                 set_bit(BTN_TOOL_QUADTAP, hi->input->keybit);
 339         }
 340
 341         /* eGalax devices provide a Digitizer.Stylus input which overrides
 342          * the correct Digitizers.Finger X/Y ranges.
 343          * Let's just ignore this input. */
 344         if (field->physical == HID_DG_STYLUS)
 345                 return -1;
 346
 347         switch (usage->hid & HID_USAGE_PAGE) {
 348
 349         case HID_UP_GENDESK:
 350                 switch (usage->hid) {
 351                 case HID_GD_X:
 352                         hid_map_usage(hi, usage, bit, max,
 353                                         EV_ABS, ABS_MT_POSITION_X);
 354                         set_abs(hi->input, ABS_MT_POSITION_X, field,
 355                                 cls->sn_move);
 356                         /* touchscreen emulation */
 357                         set_abs(hi->input, ABS_X, field, cls->sn_move);
 358                         mt_store_field(usage, td, hi);
 359                         td->last_field_index = field->index;
 360                         return 1;
 361                 case HID_GD_Y:
 362                         hid_map_usage(hi, usage, bit, max,
 363                                         EV_ABS, ABS_MT_POSITION_Y);
 364                         set_abs(hi->input, ABS_MT_POSITION_Y, field,
 365                                 cls->sn_move);
 366                         /* touchscreen emulation */
 367                         set_abs(hi->input, ABS_Y, field, cls->sn_move);
 368                         mt_store_field(usage, td, hi);
 369                         td->last_field_index = field->index;
 370                         return 1;
 371                 }
 372                 return 0;
 373
 374         case HID_UP_DIGITIZER:
 375                 switch (usage->hid) {
 376                 case HID_DG_INRANGE:
 377                         mt_store_field(usage, td, hi);
 378                         td->last_field_index = field->index;
 379                         return 1;
 380                 case HID_DG_CONFIDENCE:
 381                         mt_store_field(usage, td, hi);
 382                         td->last_field_index = field->index;
 383                         return 1;
 384                 case HID_DG_TIPSWITCH:
 385                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 386                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 387                         mt_store_field(usage, td, hi);
 388                         td->last_field_index = field->index;
 389                         return 1;
 390                 case HID_DG_CONTACTID:
 391                         if (!td->maxcontacts)
 392                                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 393                         input_mt_init_slots(hi->input, td->maxcontacts);
 394                         mt_store_field(usage, td, hi);
 395                         td->last_field_index = field->index;
 396                         td->touches_by_report++;
 397                         return 1;
 398                 case HID_DG_WIDTH:
 399                         hid_map_usage(hi, usage, bit, max,
 400                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 401                         set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 402                                 cls->sn_width);
 403                         mt_store_field(usage, td, hi);
 404                         td->last_field_index = field->index;
 405                         return 1;
 406                 case HID_DG_HEIGHT:
 407                         hid_map_usage(hi, usage, bit, max,
 408                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 409                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 410                                 cls->sn_height);
 411                         input_set_abs_params(hi->input,
 412                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 413                         mt_store_field(usage, td, hi);
 414                         td->last_field_index = field->index;
 415                         return 1;
 416                 case HID_DG_TIPPRESSURE:
 417                         hid_map_usage(hi, usage, bit, max,
 418                                         EV_ABS, ABS_MT_PRESSURE);
 419                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 420                                 cls->sn_pressure);
 421                         /* touchscreen emulation */
 422                         set_abs(hi->input, ABS_PRESSURE, field,
 423                                 cls->sn_pressure);
 424                         mt_store_field(usage, td, hi);
 425                         td->last_field_index = field->index;
 426                         return 1;
 427                 case HID_DG_CONTACTCOUNT:
 428                         td->last_field_index = field->index;
 429                         return 1;
 430                 case HID_DG_CONTACTMAX:
 431                         /* we don't set td->last_slot_field as contactcount and
 432                          * contact max are global to the report */
 433                         td->last_field_index = field->index;
 434                         return -1;
 435                 }
 436                 case HID_DG_TOUCH:
 437                         /* Legacy devices use TIPSWITCH and not TOUCH.
 438                          * Let's just ignore this field. */
 439                         return -1;
 440                 /* let hid-input decide for the others */
 441                 return 0;
 442
 443         case HID_UP_BUTTON:
 444                 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
 445                 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
 446                 input_set_capability(hi->input, EV_KEY, code);
 447                 return 1;
 448
 449         case 0xff000000:
 450                 /* we do not want to map these: no input-oriented meaning */
 451                 return -1;
 452         }
 453
 454         return 0;
 455 }
 456
 457 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 458                 struct hid_field *field, struct hid_usage *usage,
 459                 unsigned long **bit, int *max)
 460 {
 461         if (usage->type == EV_KEY || usage->type == EV_ABS)
 462                 set_bit(usage->type, hi->input->evbit);
 463
 464         return -1;
 465 }
 466
 467 static int mt_compute_slot(struct mt_device *td)
 468 {
 469         __s32 quirks = td->mtclass.quirks;
 470
 471         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 472                 return td->curdata.contactid;
 473
 474         if (quirks & MT_QUIRK_CYPRESS)
 475                 return cypress_compute_slot(td);
 476
 477         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 478                 return td->num_received;
 479
 480         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 481                 return td->curdata.contactid - 1;
 482
 483         return find_slot_from_contactid(td);
 484 }
 485
 486 /*
 487  * this function is called when a whole contact has been processed,
 488  * so that it can assign it to a slot and store the data there
 489  */
 490 static void mt_complete_slot(struct mt_device *td)
 491 {
 492         td->curdata.seen_in_this_frame = true;
 493         if (td->curvalid) {
 494                 int slotnum = mt_compute_slot(td);
 495
 496                 if (slotnum >= 0 && slotnum < td->maxcontacts)
 497                         td->slots[slotnum] = td->curdata;
 498         }
 499         td->num_received++;
 500 }
 501
 502
 503 /*
 504  * this function is called when a whole packet has been received and processed,
 505  * so that it can decide what to send to the input layer.
 506  */
 507 static void mt_emit_event(struct mt_device *td, struct input_dev *input)
 508 {
 509         int i;
 510
 511         for (i = 0; i < td->maxcontacts; ++i) {
 512                 struct mt_slot *s = &(td->slots[i]);
 513                 if ((td->mtclass.quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
 514                         !s->seen_in_this_frame) {
 515                         s->touch_state = false;
 516                 }
 517
 518                 input_mt_slot(input, i);
 519                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 520                         s->touch_state);
 521                 if (s->touch_state) {
 522                         /* this finger is on the screen */
 523                         int wide = (s->w > s->h);
 524                         /* divided by two to match visual scale of touch */
 525                         int major = max(s->w, s->h) >> 1;
 526                         int minor = min(s->w, s->h) >> 1;
 527
 528                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 529                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 530                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 531                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 532                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 533                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 534                 }
 535                 s->seen_in_this_frame = false;
 536
 537         }
 538
 539         input_mt_report_pointer_emulation(input, true);
 540         input_sync(input);
 541         td->num_received = 0;
 542 }
 543
 544
 545
 546 static int mt_event(struct hid_device *hid, struct hid_field *field,
 547                                 struct hid_usage *usage, __s32 value)
 548 {
 549         struct mt_device *td = hid_get_drvdata(hid);
 550         __s32 quirks = td->mtclass.quirks;
 551
 552         if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
 553                 switch (usage->hid) {
 554                 case HID_DG_INRANGE:
 555                         if (quirks & MT_QUIRK_ALWAYS_VALID)
 556                                 td->curvalid = true;
 557                         else if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 558                                 td->curvalid = value;
 559                         break;
 560                 case HID_DG_TIPSWITCH:
 561                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 562                                 td->curvalid = value;
 563                         td->curdata.touch_state = value;
 564                         break;
 565                 case HID_DG_CONFIDENCE:
 566                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 567                                 td->curvalid = value;
 568                         break;
 569                 case HID_DG_CONTACTID:
 570                         td->curdata.contactid = value;
 571                         break;
 572                 case HID_DG_TIPPRESSURE:
 573                         td->curdata.p = value;
 574                         break;
 575                 case HID_GD_X:
 576                         td->curdata.x = value;
 577                         break;
 578                 case HID_GD_Y:
 579                         td->curdata.y = value;
 580                         break;
 581                 case HID_DG_WIDTH:
 582                         td->curdata.w = value;
 583                         break;
 584                 case HID_DG_HEIGHT:
 585                         td->curdata.h = value;
 586                         break;
 587                 case HID_DG_CONTACTCOUNT:
 588                         /*
 589                          * Includes multi-packet support where subsequent
 590                          * packets are sent with zero contactcount.
 591                          */
 592                         if (value)
 593                                 td->num_expected = value;
 594                         break;
 595                 case HID_DG_TOUCH:
 596                         /* do nothing */
 597                         break;
 598
 599                 default:
 600                         /* fallback to the generic hidinput handling */
 601                         return 0;
 602                 }
 603
 604                 if (usage->hid == td->last_slot_field)
 605                         mt_complete_slot(td);
 606
 607                 if (field->index == td->last_field_index
 608                         && td->num_received >= td->num_expected)
 609                         mt_emit_event(td, field->hidinput->input);
 610
 611         }
 612
 613         /* we have handled the hidinput part, now remains hiddev */
 614         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 615                 hid->hiddev_hid_event(hid, field, usage, value);
 616
 617         return 1;
 618 }
 619
 620 static void mt_set_input_mode(struct hid_device *hdev)
 621 {
 622         struct mt_device *td = hid_get_drvdata(hdev);
 623         struct hid_report *r;
 624         struct hid_report_enum *re;
 625
 626         if (td->inputmode < 0)
 627                 return;
 628
 629         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 630         r = re->report_id_hash[td->inputmode];
 631         if (r) {
 632                 r->field[0]->value[td->inputmode_index] = 0x02;
 633                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
 634         }
 635 }
 636
 637 static void mt_set_maxcontacts(struct hid_device *hdev)
 638 {
 639         struct mt_device *td = hid_get_drvdata(hdev);
 640         struct hid_report *r;
 641         struct hid_report_enum *re;
 642         int fieldmax, max;
 643
 644         if (td->maxcontact_report_id < 0)
 645                 return;
 646
 647         if (!td->mtclass.maxcontacts)
 648                 return;
 649
 650         re = &hdev->report_enum[HID_FEATURE_REPORT];
 651         r = re->report_id_hash[td->maxcontact_report_id];
 652         if (r) {
 653                 max = td->mtclass.maxcontacts;
 654                 fieldmax = r->field[0]->logical_maximum;
 655                 max = min(fieldmax, max);
 656                 if (r->field[0]->value[0] != max) {
 657                         r->field[0]->value[0] = max;
 658                         usbhid_submit_report(hdev, r, USB_DIR_OUT);
 659                 }
 660         }
 661 }
 662
 663 static void mt_post_parse_default_settings(struct mt_device *td)
 664 {
 665         __s32 quirks = td->mtclass.quirks;
 666
 667         /* unknown serial device needs special quirks */
 668         if (td->touches_by_report == 1) {
 669                 quirks |= MT_QUIRK_ALWAYS_VALID;
 670                 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 671                 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 672                 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 673         }
 674
 675         td->mtclass.quirks = quirks;
 676 }
 677
 678 static void mt_post_parse(struct mt_device *td)
 679 {
 680         struct mt_fields *f = td->fields;
 681
 682         if (td->touches_by_report > 0) {
 683                 int field_count_per_touch = f->length / td->touches_by_report;
 684                 td->last_slot_field = f->usages[field_count_per_touch - 1];
 685         }
 686 }
 687
 688 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 689 {
 690         int ret, i;
 691         struct mt_device *td;
 692         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 693
 694         for (i = 0; mt_classes[i].name ; i++) {
 695                 if (id->driver_data == mt_classes[i].name) {
 696                         mtclass = &(mt_classes[i]);
 697                         break;
 698                 }
 699         }
 700
 701         /* This allows the driver to correctly support devices
 702          * that emit events over several HID messages.
 703          */
 704         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 705
 706         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 707         if (!td) {
 708                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 709                 return -ENOMEM;
 710         }
 711         td->mtclass = *mtclass;
 712         td->inputmode = -1;
 713         td->maxcontact_report_id = -1;
 714         hid_set_drvdata(hdev, td);
 715
 716         td->fields = kzalloc(sizeof(struct mt_fields), GFP_KERNEL);
 717         if (!td->fields) {
 718                 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
 719                 ret = -ENOMEM;
 720                 goto fail;
 721         }
 722
 723         ret = hid_parse(hdev);
 724         if (ret != 0)
 725                 goto fail;
 726
 727         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 728         if (ret)
 729                 goto fail;
 730
 731         mt_post_parse(td);
 732
 733         if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
 734                 mt_post_parse_default_settings(td);
 735
 736         td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
 737                                 GFP_KERNEL);
 738         if (!td->slots) {
 739                 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
 740                 hid_hw_stop(hdev);
 741                 ret = -ENOMEM;
 742                 goto fail;
 743         }
 744
 745         ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
 746
 747         mt_set_maxcontacts(hdev);
 748         mt_set_input_mode(hdev);
 749
 750         kfree(td->fields);
 751         td->fields = NULL;
 752
 753         return 0;
 754
 755 fail:
 756         kfree(td->fields);
 757         kfree(td);
 758         return ret;
 759 }
 760
 761 #ifdef CONFIG_PM
 762 static int mt_reset_resume(struct hid_device *hdev)
 763 {
 764         mt_set_maxcontacts(hdev);
 765         mt_set_input_mode(hdev);
 766         return 0;
 767 }
 768
 769 static int mt_resume(struct hid_device *hdev)
 770 {
 771         struct usb_interface *intf;
 772         struct usb_host_interface *interface;
 773         struct usb_device *dev;
 774
 775         if (hdev->bus != BUS_USB)
 776                 return 0;
 777
 778         intf = to_usb_interface(hdev->dev.parent);
 779         interface = intf->cur_altsetting;
 780         dev = hid_to_usb_dev(hdev);
 781
 782         /* Some Elan legacy devices require SET_IDLE to be set on resume.
 783          * It should be safe to send it to other devices too.
 784          * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
 785
 786         usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 787                         HID_REQ_SET_IDLE,
 788                         USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 789                         0, interface->desc.bInterfaceNumber,
 790                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 791
 792         return 0;
 793 }
 794 #endif
 795
 796 static void mt_remove(struct hid_device *hdev)
 797 {
 798         struct mt_device *td = hid_get_drvdata(hdev);
 799         sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
 800         hid_hw_stop(hdev);
 801         kfree(td->slots);
 802         kfree(td);
 803         hid_set_drvdata(hdev, NULL);
 804 }
 805
 806 static const struct hid_device_id mt_devices[] = {
 807
 808         /* 3M panels */
 809         { .driver_data = MT_CLS_3M,
 810                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 811                         USB_DEVICE_ID_3M1968) },
 812         { .driver_data = MT_CLS_3M,
 813                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 814                         USB_DEVICE_ID_3M2256) },
 815         { .driver_data = MT_CLS_3M,
 816                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 817                         USB_DEVICE_ID_3M3266) },
 818
 819         /* ActionStar panels */
 820         { .driver_data = MT_CLS_DEFAULT,
 821                 MT_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 822                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 823
 824         /* Atmel panels */
 825         { .driver_data = MT_CLS_SERIAL,
 826                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 827                         USB_DEVICE_ID_ATMEL_MULTITOUCH) },
 828         { .driver_data = MT_CLS_SERIAL,
 829                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 830                         USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
 831
 832         /* Baanto multitouch devices */
 833         { .driver_data = MT_CLS_DEFAULT,
 834                 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
 835                         USB_DEVICE_ID_BAANTO_MT_190W2) },
 836         /* Cando panels */
 837         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 838                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 839                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 840         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 841                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 842                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 843         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 844                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 845                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 846         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 847                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 848                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 849
 850         /* Chunghwa Telecom touch panels */
 851         {  .driver_data = MT_CLS_DEFAULT,
 852                 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
 853                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
 854
 855         /* CVTouch panels */
 856         { .driver_data = MT_CLS_DEFAULT,
 857                 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
 858                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
 859
 860         /* Cypress panel */
 861         { .driver_data = MT_CLS_CYPRESS,
 862                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 863                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 864
 865         /* eGalax devices (resistive) */
 866         { .driver_data = MT_CLS_EGALAX,
 867                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 868                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
 869         { .driver_data = MT_CLS_EGALAX,
 870                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 871                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
 872
 873         /* eGalax devices (capacitive) */
 874         { .driver_data = MT_CLS_EGALAX,
 875                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 876                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
 877         { .driver_data = MT_CLS_EGALAX_SERIAL,
 878                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 879                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
 880         { .driver_data = MT_CLS_EGALAX_SERIAL,
 881                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 882                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
 883         { .driver_data = MT_CLS_EGALAX_SERIAL,
 884                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 885                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
 886         { .driver_data = MT_CLS_EGALAX_SERIAL,
 887                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 888                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
 889         { .driver_data = MT_CLS_EGALAX,
 890                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 891                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
 892         { .driver_data = MT_CLS_EGALAX_SERIAL,
 893                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 894                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
 895         { .driver_data = MT_CLS_EGALAX,
 896                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 897                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
 898         { .driver_data = MT_CLS_EGALAX_SERIAL,
 899                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 900                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
 901         { .driver_data = MT_CLS_EGALAX,
 902                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 903                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
 904         { .driver_data = MT_CLS_EGALAX,
 905                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 906                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
 907         { .driver_data = MT_CLS_EGALAX_SERIAL,
 908                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 909                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
 910         { .driver_data = MT_CLS_EGALAX_SERIAL,
 911                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 912                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
 913         { .driver_data = MT_CLS_EGALAX_SERIAL,
 914                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 915                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
 916         { .driver_data = MT_CLS_EGALAX,
 917                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 918                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
 919         { .driver_data = MT_CLS_EGALAX,
 920                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 921                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
 922         { .driver_data = MT_CLS_EGALAX,
 923                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 924                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
 925
 926         /* Elo TouchSystems IntelliTouch Plus panel */
 927         { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
 928                 MT_USB_DEVICE(USB_VENDOR_ID_ELO,
 929                         USB_DEVICE_ID_ELO_TS2515) },
 930
 931         /* GeneralTouch panel */
 932         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 933                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 934                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
 935
 936         /* Gametel game controller */
 937         { .driver_data = MT_CLS_DEFAULT,
 938                 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
 939                         USB_DEVICE_ID_GAMETEL_MT_MODE) },
 940
 941         /* GoodTouch panels */
 942         { .driver_data = MT_CLS_DEFAULT,
 943                 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
 944                         USB_DEVICE_ID_GOODTOUCH_000f) },
 945
 946         /* Hanvon panels */
 947         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 948                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
 949                         USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
 950
 951         /* Ideacom panel */
 952         { .driver_data = MT_CLS_SERIAL,
 953                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
 954                         USB_DEVICE_ID_IDEACOM_IDC6650) },
 955         { .driver_data = MT_CLS_SERIAL,
 956                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
 957                         USB_DEVICE_ID_IDEACOM_IDC6651) },
 958
 959         /* Ilitek dual touch panel */
 960         {  .driver_data = MT_CLS_DEFAULT,
 961                 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
 962                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
 963
 964         /* IRTOUCH panels */
 965         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 966                 MT_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
 967                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
 968
 969         /* LG Display panels */
 970         { .driver_data = MT_CLS_DEFAULT,
 971                 MT_USB_DEVICE(USB_VENDOR_ID_LG,
 972                         USB_DEVICE_ID_LG_MULTITOUCH) },
 973
 974         /* Lumio panels */
 975         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 976                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 977                         USB_DEVICE_ID_CRYSTALTOUCH) },
 978         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 979                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 980                         USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
 981
 982         /* MosArt panels */
 983         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 984                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
 985                         USB_DEVICE_ID_ASUS_T91MT)},
 986         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 987                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
 988                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
 989         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 990                 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
 991                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
 992
 993         /* Panasonic panels */
 994         { .driver_data = MT_CLS_PANASONIC,
 995                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
 996                         USB_DEVICE_ID_PANABOARD_UBT780) },
 997         { .driver_data = MT_CLS_PANASONIC,
 998                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
 999                         USB_DEVICE_ID_PANABOARD_UBT880) },
1000
1001         /* Novatek Panel */
1002         { .driver_data = MT_CLS_DEFAULT,
1003                 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1004                         USB_DEVICE_ID_NOVATEK_PCT) },
1005
1006         /* PenMount panels */
1007         { .driver_data = MT_CLS_CONFIDENCE,
1008                 MT_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
1009                         USB_DEVICE_ID_PENMOUNT_PCI) },
1010
1011         /* PixArt optical touch screen */
1012         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1013                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1014                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1015         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1016                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1017                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1018         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1019                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1020                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1021
1022         /* PixCir-based panels */
1023         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1024                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON,
1025                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
1026         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1027                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1028                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1029
1030         /* Quanta-based panels */
1031         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1032                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1033                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1034         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1035                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1036                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1037         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1038                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1039                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) },
1040
1041         /* Stantum panels */
1042         { .driver_data = MT_CLS_CONFIDENCE,
1043                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM,
1044                         USB_DEVICE_ID_MTP)},
1045         { .driver_data = MT_CLS_CONFIDENCE,
1046                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1047                         USB_DEVICE_ID_MTP_STM)},
1048         { .driver_data = MT_CLS_CONFIDENCE,
1049                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
1050                         USB_DEVICE_ID_MTP_SITRONIX)},
1051
1052         /* TopSeed panels */
1053         { .driver_data = MT_CLS_TOPSEED,
1054                 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1055                         USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1056
1057         /* Touch International panels */
1058         { .driver_data = MT_CLS_DEFAULT,
1059                 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1060                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1061
1062         /* Unitec panels */
1063         { .driver_data = MT_CLS_DEFAULT,
1064                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1065                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1066         { .driver_data = MT_CLS_DEFAULT,
1067                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1068                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1069         /* XAT */
1070         { .driver_data = MT_CLS_DEFAULT,
1071                 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1072                         USB_DEVICE_ID_XAT_CSR) },
1073
1074         /* Xiroku */
1075         { .driver_data = MT_CLS_DEFAULT,
1076                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1077                         USB_DEVICE_ID_XIROKU_SPX) },
1078         { .driver_data = MT_CLS_DEFAULT,
1079                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1080                         USB_DEVICE_ID_XIROKU_MPX) },
1081         { .driver_data = MT_CLS_DEFAULT,
1082                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1083                         USB_DEVICE_ID_XIROKU_CSR) },
1084         { .driver_data = MT_CLS_DEFAULT,
1085                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1086                         USB_DEVICE_ID_XIROKU_SPX1) },
1087         { .driver_data = MT_CLS_DEFAULT,
1088                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1089                         USB_DEVICE_ID_XIROKU_MPX1) },
1090         { .driver_data = MT_CLS_DEFAULT,
1091                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1092                         USB_DEVICE_ID_XIROKU_CSR1) },
1093         { .driver_data = MT_CLS_DEFAULT,
1094                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1095                         USB_DEVICE_ID_XIROKU_SPX2) },
1096         { .driver_data = MT_CLS_DEFAULT,
1097                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1098                         USB_DEVICE_ID_XIROKU_MPX2) },
1099         { .driver_data = MT_CLS_DEFAULT,
1100                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1101                         USB_DEVICE_ID_XIROKU_CSR2) },
1102
1103         /* Zytronic panels */
1104         { .driver_data = MT_CLS_SERIAL,
1105                 MT_USB_DEVICE(USB_VENDOR_ID_ZYTRONIC,
1106                         USB_DEVICE_ID_ZYTRONIC_ZXY100) },
1107
1108         /* Generic MT device */
1109         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1110         { }
1111 };
1112 MODULE_DEVICE_TABLE(hid, mt_devices);
1113
1114 static const struct hid_usage_id mt_grabbed_usages[] = {
1115         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1116         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1117 };
1118
1119 static struct hid_driver mt_driver = {
1120         .name = "hid-multitouch",
1121         .id_table = mt_devices,
1122         .probe = mt_probe,
1123         .remove = mt_remove,
1124         .input_mapping = mt_input_mapping,
1125         .input_mapped = mt_input_mapped,
1126         .feature_mapping = mt_feature_mapping,
1127         .usage_table = mt_grabbed_usages,
1128         .event = mt_event,
1129 #ifdef CONFIG_PM
1130         .reset_resume = mt_reset_resume,
1131         .resume = mt_resume,
1132 #endif
1133 };
1134
1135 static int __init mt_init(void)
1136 {
1137         return hid_register_driver(&mt_driver);
1138 }
1139
1140 static void __exit mt_exit(void)
1141 {
1142         hid_unregister_driver(&mt_driver);
1143 }
1144
1145 module_init(mt_init);
1146 module_exit(mt_exit);