Pileus Git - ~andy/linux/blob - drivers/hid/hid-multitouch.c

   1 /*
   2  *  HID driver for multitouch panels
   3  *
   4  *  Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
   5  *  Copyright (c) 2010-2012 Benjamin Tissoires <benjamin.tissoires@gmail.com>
   6  *  Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
   7  *
   8  *  This code is partly based on hid-egalax.c:
   9  *
  10  *  Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
  11  *  Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
  12  *  Copyright (c) 2010 Canonical, Ltd.
  13  *
  14  *  This code is partly based on hid-3m-pct.c:
  15  *
  16  *  Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
  17  *  Copyright (c) 2010      Henrik Rydberg <rydberg@euromail.se>
  18  *  Copyright (c) 2010      Canonical, Ltd.
  19  *
  20  */
  21
  22 /*
  23  * This program is free software; you can redistribute it and/or modify it
  24  * under the terms of the GNU General Public License as published by the Free
  25  * Software Foundation; either version 2 of the License, or (at your option)
  26  * any later version.
  27  */
  28
  29 #include <linux/device.h>
  30 #include <linux/hid.h>
  31 #include <linux/module.h>
  32 #include <linux/slab.h>
  33 #include <linux/usb.h>
  34 #include <linux/input/mt.h>
  35 #include "usbhid/usbhid.h"
  36
  37
  38 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
  39 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
  40 MODULE_DESCRIPTION("HID multitouch panels");
  41 MODULE_LICENSE("GPL");
  42
  43 #include "hid-ids.h"
  44
  45 /* quirks to control the device */
  46 #define MT_QUIRK_NOT_SEEN_MEANS_UP      (1 << 0)
  47 #define MT_QUIRK_SLOT_IS_CONTACTID      (1 << 1)
  48 #define MT_QUIRK_CYPRESS                (1 << 2)
  49 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER  (1 << 3)
  50 #define MT_QUIRK_ALWAYS_VALID           (1 << 4)
  51 #define MT_QUIRK_VALID_IS_INRANGE       (1 << 5)
  52 #define MT_QUIRK_VALID_IS_CONFIDENCE    (1 << 6)
  53 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE    (1 << 8)
  54 #define MT_QUIRK_NO_AREA                (1 << 9)
  55 #define MT_QUIRK_IGNORE_DUPLICATES      (1 << 10)
  56 #define MT_QUIRK_HOVERING               (1 << 11)
  57
  58 struct mt_slot {
  59         __s32 x, y, cx, cy, p, w, h;
  60         __s32 contactid;        /* the device ContactID assigned to this slot */
  61         bool touch_state;       /* is the touch valid? */
  62         bool inrange_state;     /* is the finger in proximity of the sensor? */
  63 };
  64
  65 struct mt_class {
  66         __s32 name;     /* MT_CLS */
  67         __s32 quirks;
  68         __s32 sn_move;  /* Signal/noise ratio for move events */
  69         __s32 sn_width; /* Signal/noise ratio for width events */
  70         __s32 sn_height;        /* Signal/noise ratio for height events */
  71         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
  72         __u8 maxcontacts;
  73         bool is_indirect;       /* true for touchpads */
  74 };
  75
  76 struct mt_fields {
  77         unsigned usages[HID_MAX_FIELDS];
  78         unsigned int length;
  79 };
  80
  81 struct mt_device {
  82         struct mt_slot curdata; /* placeholder of incoming data */
  83         struct mt_class mtclass;        /* our mt device class */
  84         struct mt_fields *fields;       /* temporary placeholder for storing the
  85                                            multitouch fields */
  86         unsigned last_field_index;      /* last field index of the report */
  87         unsigned last_slot_field;       /* the last field of a slot */
  88         __s8 inputmode;         /* InputMode HID feature, -1 if non-existent */
  89         __s8 inputmode_index;   /* InputMode HID feature index in the report */
  90         __s8 maxcontact_report_id;      /* Maximum Contact Number HID feature,
  91                                    -1 if non-existent */
  92         __u8 num_received;      /* how many contacts we received */
  93         __u8 num_expected;      /* expected last contact index */
  94         __u8 maxcontacts;
  95         __u8 touches_by_report; /* how many touches are present in one report:
  96                                 * 1 means we should use a serial protocol
  97                                 * > 1 means hybrid (multitouch) protocol */
  98         bool serial_maybe;      /* need to check for serial protocol */
  99         bool curvalid;          /* is the current contact valid? */
 100         unsigned mt_flags;      /* flags to pass to input-mt */
 101 };
 102
 103 /* classes of device behavior */
 104 #define MT_CLS_DEFAULT                          0x0001
 105
 106 #define MT_CLS_SERIAL                           0x0002
 107 #define MT_CLS_CONFIDENCE                       0x0003
 108 #define MT_CLS_CONFIDENCE_CONTACT_ID            0x0004
 109 #define MT_CLS_CONFIDENCE_MINUS_ONE             0x0005
 110 #define MT_CLS_DUAL_INRANGE_CONTACTID           0x0006
 111 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       0x0007
 112 #define MT_CLS_DUAL_NSMU_CONTACTID              0x0008
 113 #define MT_CLS_INRANGE_CONTACTNUMBER            0x0009
 114
 115 /* vendor specific classes */
 116 #define MT_CLS_3M                               0x0101
 117 #define MT_CLS_CYPRESS                          0x0102
 118 #define MT_CLS_EGALAX                           0x0103
 119 #define MT_CLS_EGALAX_SERIAL                    0x0104
 120 #define MT_CLS_TOPSEED                          0x0105
 121 #define MT_CLS_PANASONIC                        0x0106
 122 #define MT_CLS_FLATFROG                         0x0107
 123 #define MT_CLS_GENERALTOUCH_TWOFINGERS          0x0108
 124 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS      0x0109
 125
 126 #define MT_DEFAULT_MAXCONTACT   10
 127 #define MT_MAX_MAXCONTACT       250
 128
 129 #define MT_USB_DEVICE(v, p)     HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
 130 #define MT_BT_DEVICE(v, p)      HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
 131
 132 /*
 133  * these device-dependent functions determine what slot corresponds
 134  * to a valid contact that was just read.
 135  */
 136
 137 static int cypress_compute_slot(struct mt_device *td)
 138 {
 139         if (td->curdata.contactid != 0 || td->num_received == 0)
 140                 return td->curdata.contactid;
 141         else
 142                 return -1;
 143 }
 144
 145 static struct mt_class mt_classes[] = {
 146         { .name = MT_CLS_DEFAULT,
 147                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 148         { .name = MT_CLS_SERIAL,
 149                 .quirks = MT_QUIRK_ALWAYS_VALID},
 150         { .name = MT_CLS_CONFIDENCE,
 151                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 152         { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
 153                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 154                         MT_QUIRK_SLOT_IS_CONTACTID },
 155         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 156                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 157                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 158         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 159                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 160                         MT_QUIRK_SLOT_IS_CONTACTID,
 161                 .maxcontacts = 2 },
 162         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 163                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 164                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 165                 .maxcontacts = 2 },
 166         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
 167                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 168                         MT_QUIRK_SLOT_IS_CONTACTID,
 169                 .maxcontacts = 2 },
 170         { .name = MT_CLS_INRANGE_CONTACTNUMBER,
 171                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 172                         MT_QUIRK_SLOT_IS_CONTACTNUMBER },
 173
 174         /*
 175          * vendor specific classes
 176          */
 177         { .name = MT_CLS_3M,
 178                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 179                         MT_QUIRK_SLOT_IS_CONTACTID,
 180                 .sn_move = 2048,
 181                 .sn_width = 128,
 182                 .sn_height = 128,
 183                 .maxcontacts = 60,
 184         },
 185         { .name = MT_CLS_CYPRESS,
 186                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 187                         MT_QUIRK_CYPRESS,
 188                 .maxcontacts = 10 },
 189         { .name = MT_CLS_EGALAX,
 190                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 191                         MT_QUIRK_VALID_IS_INRANGE,
 192                 .sn_move = 4096,
 193                 .sn_pressure = 32,
 194         },
 195         { .name = MT_CLS_EGALAX_SERIAL,
 196                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 197                         MT_QUIRK_ALWAYS_VALID,
 198                 .sn_move = 4096,
 199                 .sn_pressure = 32,
 200         },
 201         { .name = MT_CLS_TOPSEED,
 202                 .quirks = MT_QUIRK_ALWAYS_VALID,
 203                 .is_indirect = true,
 204                 .maxcontacts = 2,
 205         },
 206         { .name = MT_CLS_PANASONIC,
 207                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
 208                 .maxcontacts = 4 },
 209         { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
 210                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 211                         MT_QUIRK_VALID_IS_INRANGE |
 212                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 213                 .maxcontacts = 2
 214         },
 215         { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
 216                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 217                         MT_QUIRK_SLOT_IS_CONTACTNUMBER
 218         },
 219
 220         { .name = MT_CLS_FLATFROG,
 221                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 222                         MT_QUIRK_NO_AREA,
 223                 .sn_move = 2048,
 224                 .maxcontacts = 40,
 225         },
 226         { }
 227 };
 228
 229 static ssize_t mt_show_quirks(struct device *dev,
 230                            struct device_attribute *attr,
 231                            char *buf)
 232 {
 233         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 234         struct mt_device *td = hid_get_drvdata(hdev);
 235
 236         return sprintf(buf, "%u\n", td->mtclass.quirks);
 237 }
 238
 239 static ssize_t mt_set_quirks(struct device *dev,
 240                           struct device_attribute *attr,
 241                           const char *buf, size_t count)
 242 {
 243         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 244         struct mt_device *td = hid_get_drvdata(hdev);
 245
 246         unsigned long val;
 247
 248         if (kstrtoul(buf, 0, &val))
 249                 return -EINVAL;
 250
 251         td->mtclass.quirks = val;
 252
 253         return count;
 254 }
 255
 256 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
 257
 258 static struct attribute *sysfs_attrs[] = {
 259         &dev_attr_quirks.attr,
 260         NULL
 261 };
 262
 263 static struct attribute_group mt_attribute_group = {
 264         .attrs = sysfs_attrs
 265 };
 266
 267 static void mt_feature_mapping(struct hid_device *hdev,
 268                 struct hid_field *field, struct hid_usage *usage)
 269 {
 270         struct mt_device *td = hid_get_drvdata(hdev);
 271         int i;
 272
 273         switch (usage->hid) {
 274         case HID_DG_INPUTMODE:
 275                 td->inputmode = field->report->id;
 276                 td->inputmode_index = 0; /* has to be updated below */
 277
 278                 for (i=0; i < field->maxusage; i++) {
 279                         if (field->usage[i].hid == usage->hid) {
 280                                 td->inputmode_index = i;
 281                                 break;
 282                         }
 283                 }
 284
 285                 break;
 286         case HID_DG_CONTACTMAX:
 287                 td->maxcontact_report_id = field->report->id;
 288                 td->maxcontacts = field->value[0];
 289                 if (!td->maxcontacts &&
 290                     field->logical_maximum <= MT_MAX_MAXCONTACT)
 291                         td->maxcontacts = field->logical_maximum;
 292                 if (td->mtclass.maxcontacts)
 293                         /* check if the maxcontacts is given by the class */
 294                         td->maxcontacts = td->mtclass.maxcontacts;
 295
 296                 break;
 297         case 0xff0000c5:
 298                 if (field->report_count == 256 && field->report_size == 8) {
 299                         /* Win 8 devices need special quirks */
 300                         __s32 *quirks = &td->mtclass.quirks;
 301                         *quirks |= MT_QUIRK_ALWAYS_VALID;
 302                         *quirks |= MT_QUIRK_IGNORE_DUPLICATES;
 303                         *quirks |= MT_QUIRK_HOVERING;
 304                         *quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 305                         *quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 306                         *quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 307                 }
 308                 break;
 309         }
 310 }
 311
 312 static void set_abs(struct input_dev *input, unsigned int code,
 313                 struct hid_field *field, int snratio)
 314 {
 315         int fmin = field->logical_minimum;
 316         int fmax = field->logical_maximum;
 317         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 318         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 319         input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
 320 }
 321
 322 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
 323                 struct hid_input *hi)
 324 {
 325         struct mt_fields *f = td->fields;
 326
 327         if (f->length >= HID_MAX_FIELDS)
 328                 return;
 329
 330         f->usages[f->length++] = usage->hid;
 331 }
 332
 333 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 334                 struct hid_field *field, struct hid_usage *usage,
 335                 unsigned long **bit, int *max)
 336 {
 337         struct mt_device *td = hid_get_drvdata(hdev);
 338         struct mt_class *cls = &td->mtclass;
 339         int code;
 340         struct hid_usage *prev_usage = NULL;
 341
 342         /* Only map fields from TouchScreen or TouchPad collections.
 343         * We need to ignore fields that belong to other collections
 344         * such as Mouse that might have the same GenericDesktop usages. */
 345         if (field->application == HID_DG_TOUCHSCREEN)
 346                 td->mt_flags |= INPUT_MT_DIRECT;
 347         else if (field->application != HID_DG_TOUCHPAD)
 348                 return 0;
 349
 350         /*
 351          * Model touchscreens providing buttons as touchpads.
 352          */
 353         if (field->application == HID_DG_TOUCHPAD ||
 354             (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
 355                 td->mt_flags |= INPUT_MT_POINTER;
 356
 357         /* eGalax devices provide a Digitizer.Stylus input which overrides
 358          * the correct Digitizers.Finger X/Y ranges.
 359          * Let's just ignore this input. */
 360         if (field->physical == HID_DG_STYLUS)
 361                 return -1;
 362
 363         if (usage->usage_index)
 364                 prev_usage = &field->usage[usage->usage_index - 1];
 365
 366         switch (usage->hid & HID_USAGE_PAGE) {
 367
 368         case HID_UP_GENDESK:
 369                 switch (usage->hid) {
 370                 case HID_GD_X:
 371                         if (prev_usage && (prev_usage->hid == usage->hid)) {
 372                                 hid_map_usage(hi, usage, bit, max,
 373                                         EV_ABS, ABS_MT_TOOL_X);
 374                                 set_abs(hi->input, ABS_MT_TOOL_X, field,
 375                                         cls->sn_move);
 376                         } else {
 377                                 hid_map_usage(hi, usage, bit, max,
 378                                         EV_ABS, ABS_MT_POSITION_X);
 379                                 set_abs(hi->input, ABS_MT_POSITION_X, field,
 380                                         cls->sn_move);
 381                         }
 382
 383                         mt_store_field(usage, td, hi);
 384                         td->last_field_index = field->index;
 385                         return 1;
 386                 case HID_GD_Y:
 387                         if (prev_usage && (prev_usage->hid == usage->hid)) {
 388                                 hid_map_usage(hi, usage, bit, max,
 389                                         EV_ABS, ABS_MT_TOOL_Y);
 390                                 set_abs(hi->input, ABS_MT_TOOL_Y, field,
 391                                         cls->sn_move);
 392                         } else {
 393                                 hid_map_usage(hi, usage, bit, max,
 394                                         EV_ABS, ABS_MT_POSITION_Y);
 395                                 set_abs(hi->input, ABS_MT_POSITION_Y, field,
 396                                         cls->sn_move);
 397                         }
 398
 399                         mt_store_field(usage, td, hi);
 400                         td->last_field_index = field->index;
 401                         return 1;
 402                 }
 403                 return 0;
 404
 405         case HID_UP_DIGITIZER:
 406                 switch (usage->hid) {
 407                 case HID_DG_INRANGE:
 408                         if (cls->quirks & MT_QUIRK_HOVERING) {
 409                                 hid_map_usage(hi, usage, bit, max,
 410                                         EV_ABS, ABS_MT_DISTANCE);
 411                                 input_set_abs_params(hi->input,
 412                                         ABS_MT_DISTANCE, 0, 1, 0, 0);
 413                         }
 414                         mt_store_field(usage, td, hi);
 415                         td->last_field_index = field->index;
 416                         return 1;
 417                 case HID_DG_CONFIDENCE:
 418                         mt_store_field(usage, td, hi);
 419                         td->last_field_index = field->index;
 420                         return 1;
 421                 case HID_DG_TIPSWITCH:
 422                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 423                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 424                         mt_store_field(usage, td, hi);
 425                         td->last_field_index = field->index;
 426                         return 1;
 427                 case HID_DG_CONTACTID:
 428                         mt_store_field(usage, td, hi);
 429                         td->last_field_index = field->index;
 430                         td->touches_by_report++;
 431                         return 1;
 432                 case HID_DG_WIDTH:
 433                         hid_map_usage(hi, usage, bit, max,
 434                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 435                         if (!(cls->quirks & MT_QUIRK_NO_AREA))
 436                                 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 437                                         cls->sn_width);
 438                         mt_store_field(usage, td, hi);
 439                         td->last_field_index = field->index;
 440                         return 1;
 441                 case HID_DG_HEIGHT:
 442                         hid_map_usage(hi, usage, bit, max,
 443                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 444                         if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
 445                                 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 446                                         cls->sn_height);
 447                                 input_set_abs_params(hi->input,
 448                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 449                         }
 450                         mt_store_field(usage, td, hi);
 451                         td->last_field_index = field->index;
 452                         return 1;
 453                 case HID_DG_TIPPRESSURE:
 454                         hid_map_usage(hi, usage, bit, max,
 455                                         EV_ABS, ABS_MT_PRESSURE);
 456                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 457                                 cls->sn_pressure);
 458                         mt_store_field(usage, td, hi);
 459                         td->last_field_index = field->index;
 460                         return 1;
 461                 case HID_DG_CONTACTCOUNT:
 462                         td->last_field_index = field->index;
 463                         return 1;
 464                 case HID_DG_CONTACTMAX:
 465                         /* we don't set td->last_slot_field as contactcount and
 466                          * contact max are global to the report */
 467                         td->last_field_index = field->index;
 468                         return -1;
 469                 case HID_DG_TOUCH:
 470                         /* Legacy devices use TIPSWITCH and not TOUCH.
 471                          * Let's just ignore this field. */
 472                         return -1;
 473                 }
 474                 /* let hid-input decide for the others */
 475                 return 0;
 476
 477         case HID_UP_BUTTON:
 478                 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
 479                 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
 480                 input_set_capability(hi->input, EV_KEY, code);
 481                 return 1;
 482
 483         case 0xff000000:
 484                 /* we do not want to map these: no input-oriented meaning */
 485                 return -1;
 486         }
 487
 488         return 0;
 489 }
 490
 491 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 492                 struct hid_field *field, struct hid_usage *usage,
 493                 unsigned long **bit, int *max)
 494 {
 495         if (usage->type == EV_KEY || usage->type == EV_ABS)
 496                 set_bit(usage->type, hi->input->evbit);
 497
 498         return -1;
 499 }
 500
 501 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
 502 {
 503         __s32 quirks = td->mtclass.quirks;
 504
 505         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 506                 return td->curdata.contactid;
 507
 508         if (quirks & MT_QUIRK_CYPRESS)
 509                 return cypress_compute_slot(td);
 510
 511         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 512                 return td->num_received;
 513
 514         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 515                 return td->curdata.contactid - 1;
 516
 517         return input_mt_get_slot_by_key(input, td->curdata.contactid);
 518 }
 519
 520 /*
 521  * this function is called when a whole contact has been processed,
 522  * so that it can assign it to a slot and store the data there
 523  */
 524 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
 525 {
 526         if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
 527                 int slotnum = mt_compute_slot(td, input);
 528                 struct mt_slot *s = &td->curdata;
 529                 struct input_mt *mt = input->mt;
 530
 531                 if (slotnum < 0 || slotnum >= td->maxcontacts)
 532                         return;
 533
 534                 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
 535                         struct input_mt_slot *slot = &mt->slots[slotnum];
 536                         if (input_mt_is_active(slot) &&
 537                             input_mt_is_used(mt, slot))
 538                                 return;
 539                 }
 540
 541                 input_mt_slot(input, slotnum);
 542                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 543                         s->touch_state || s->inrange_state);
 544                 if (s->touch_state || s->inrange_state) {
 545                         /* this finger is in proximity of the sensor */
 546                         int wide = (s->w > s->h);
 547                         /* divided by two to match visual scale of touch */
 548                         int major = max(s->w, s->h) >> 1;
 549                         int minor = min(s->w, s->h) >> 1;
 550
 551                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 552                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 553                         input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
 554                         input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
 555                         input_event(input, EV_ABS, ABS_MT_DISTANCE,
 556                                 !s->touch_state);
 557                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 558                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 559                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 560                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 561                 }
 562         }
 563
 564         td->num_received++;
 565 }
 566
 567 /*
 568  * this function is called when a whole packet has been received and processed,
 569  * so that it can decide what to send to the input layer.
 570  */
 571 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
 572 {
 573         input_mt_sync_frame(input);
 574         input_sync(input);
 575         td->num_received = 0;
 576 }
 577
 578 static int mt_event(struct hid_device *hid, struct hid_field *field,
 579                                 struct hid_usage *usage, __s32 value)
 580 {
 581         struct mt_device *td = hid_get_drvdata(hid);
 582         __s32 quirks = td->mtclass.quirks;
 583
 584         if (hid->claimed & HID_CLAIMED_INPUT) {
 585                 switch (usage->hid) {
 586                 case HID_DG_INRANGE:
 587                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 588                                 td->curvalid = value;
 589                         if (quirks & MT_QUIRK_HOVERING)
 590                                 td->curdata.inrange_state = value;
 591                         break;
 592                 case HID_DG_TIPSWITCH:
 593                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 594                                 td->curvalid = value;
 595                         td->curdata.touch_state = value;
 596                         break;
 597                 case HID_DG_CONFIDENCE:
 598                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 599                                 td->curvalid = value;
 600                         break;
 601                 case HID_DG_CONTACTID:
 602                         td->curdata.contactid = value;
 603                         break;
 604                 case HID_DG_TIPPRESSURE:
 605                         td->curdata.p = value;
 606                         break;
 607                 case HID_GD_X:
 608                         if (usage->code == ABS_MT_TOOL_X)
 609                                 td->curdata.cx = value;
 610                         else
 611                                 td->curdata.x = value;
 612                         break;
 613                 case HID_GD_Y:
 614                         if (usage->code == ABS_MT_TOOL_Y)
 615                                 td->curdata.cy = value;
 616                         else
 617                                 td->curdata.y = value;
 618                         break;
 619                 case HID_DG_WIDTH:
 620                         td->curdata.w = value;
 621                         break;
 622                 case HID_DG_HEIGHT:
 623                         td->curdata.h = value;
 624                         break;
 625                 case HID_DG_CONTACTCOUNT:
 626                         /*
 627                          * Includes multi-packet support where subsequent
 628                          * packets are sent with zero contactcount.
 629                          */
 630                         if (value)
 631                                 td->num_expected = value;
 632                         break;
 633                 case HID_DG_TOUCH:
 634                         /* do nothing */
 635                         break;
 636
 637                 default:
 638                         /* fallback to the generic hidinput handling */
 639                         return 0;
 640                 }
 641
 642                 if (usage->usage_index + 1 == field->report_count) {
 643                         /* we only take into account the last report. */
 644                         if (usage->hid == td->last_slot_field)
 645                                 mt_complete_slot(td, field->hidinput->input);
 646
 647                         if (field->index == td->last_field_index
 648                                 && td->num_received >= td->num_expected)
 649                                 mt_sync_frame(td, field->hidinput->input);
 650                 }
 651
 652         }
 653
 654         /* we have handled the hidinput part, now remains hiddev */
 655         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 656                 hid->hiddev_hid_event(hid, field, usage, value);
 657
 658         return 1;
 659 }
 660
 661 static void mt_set_input_mode(struct hid_device *hdev)
 662 {
 663         struct mt_device *td = hid_get_drvdata(hdev);
 664         struct hid_report *r;
 665         struct hid_report_enum *re;
 666
 667         if (td->inputmode < 0)
 668                 return;
 669
 670         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 671         r = re->report_id_hash[td->inputmode];
 672         if (r) {
 673                 r->field[0]->value[td->inputmode_index] = 0x02;
 674                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
 675         }
 676 }
 677
 678 static void mt_set_maxcontacts(struct hid_device *hdev)
 679 {
 680         struct mt_device *td = hid_get_drvdata(hdev);
 681         struct hid_report *r;
 682         struct hid_report_enum *re;
 683         int fieldmax, max;
 684
 685         if (td->maxcontact_report_id < 0)
 686                 return;
 687
 688         if (!td->mtclass.maxcontacts)
 689                 return;
 690
 691         re = &hdev->report_enum[HID_FEATURE_REPORT];
 692         r = re->report_id_hash[td->maxcontact_report_id];
 693         if (r) {
 694                 max = td->mtclass.maxcontacts;
 695                 fieldmax = r->field[0]->logical_maximum;
 696                 max = min(fieldmax, max);
 697                 if (r->field[0]->value[0] != max) {
 698                         r->field[0]->value[0] = max;
 699                         usbhid_submit_report(hdev, r, USB_DIR_OUT);
 700                 }
 701         }
 702 }
 703
 704 static void mt_post_parse_default_settings(struct mt_device *td)
 705 {
 706         __s32 quirks = td->mtclass.quirks;
 707
 708         /* unknown serial device needs special quirks */
 709         if (td->touches_by_report == 1) {
 710                 quirks |= MT_QUIRK_ALWAYS_VALID;
 711                 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 712                 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 713                 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 714         }
 715
 716         td->mtclass.quirks = quirks;
 717 }
 718
 719 static void mt_post_parse(struct mt_device *td)
 720 {
 721         struct mt_fields *f = td->fields;
 722
 723         if (td->touches_by_report > 0) {
 724                 int field_count_per_touch = f->length / td->touches_by_report;
 725                 td->last_slot_field = f->usages[field_count_per_touch - 1];
 726         }
 727 }
 728
 729 static void mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
 730
 731 {
 732         struct mt_device *td = hid_get_drvdata(hdev);
 733         struct mt_class *cls = &td->mtclass;
 734         struct input_dev *input = hi->input;
 735
 736         /* Only initialize slots for MT input devices */
 737         if (!test_bit(ABS_MT_POSITION_X, input->absbit))
 738                 return;
 739
 740         if (!td->maxcontacts)
 741                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 742
 743         mt_post_parse(td);
 744         if (td->serial_maybe)
 745                 mt_post_parse_default_settings(td);
 746
 747         if (cls->is_indirect)
 748                 td->mt_flags |= INPUT_MT_POINTER;
 749
 750         if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 751                 td->mt_flags |= INPUT_MT_DROP_UNUSED;
 752
 753         input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
 754
 755         td->mt_flags = 0;
 756 }
 757
 758 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 759 {
 760         int ret, i;
 761         struct mt_device *td;
 762         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 763
 764         for (i = 0; mt_classes[i].name ; i++) {
 765                 if (id->driver_data == mt_classes[i].name) {
 766                         mtclass = &(mt_classes[i]);
 767                         break;
 768                 }
 769         }
 770
 771         /* This allows the driver to correctly support devices
 772          * that emit events over several HID messages.
 773          */
 774         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 775
 776         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 777         if (!td) {
 778                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 779                 return -ENOMEM;
 780         }
 781         td->mtclass = *mtclass;
 782         td->inputmode = -1;
 783         td->maxcontact_report_id = -1;
 784         hid_set_drvdata(hdev, td);
 785
 786         td->fields = kzalloc(sizeof(struct mt_fields), GFP_KERNEL);
 787         if (!td->fields) {
 788                 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
 789                 ret = -ENOMEM;
 790                 goto fail;
 791         }
 792
 793         if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
 794                 td->serial_maybe = true;
 795
 796         ret = hid_parse(hdev);
 797         if (ret != 0)
 798                 goto fail;
 799
 800         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 801         if (ret)
 802                 goto fail;
 803
 804         ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
 805
 806         mt_set_maxcontacts(hdev);
 807         mt_set_input_mode(hdev);
 808
 809         kfree(td->fields);
 810         td->fields = NULL;
 811
 812         return 0;
 813
 814 fail:
 815         kfree(td->fields);
 816         kfree(td);
 817         return ret;
 818 }
 819
 820 #ifdef CONFIG_PM
 821 static int mt_reset_resume(struct hid_device *hdev)
 822 {
 823         mt_set_maxcontacts(hdev);
 824         mt_set_input_mode(hdev);
 825         return 0;
 826 }
 827
 828 static int mt_resume(struct hid_device *hdev)
 829 {
 830         struct usb_interface *intf;
 831         struct usb_host_interface *interface;
 832         struct usb_device *dev;
 833
 834         if (hdev->bus != BUS_USB)
 835                 return 0;
 836
 837         intf = to_usb_interface(hdev->dev.parent);
 838         interface = intf->cur_altsetting;
 839         dev = hid_to_usb_dev(hdev);
 840
 841         /* Some Elan legacy devices require SET_IDLE to be set on resume.
 842          * It should be safe to send it to other devices too.
 843          * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
 844
 845         usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 846                         HID_REQ_SET_IDLE,
 847                         USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 848                         0, interface->desc.bInterfaceNumber,
 849                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 850
 851         return 0;
 852 }
 853 #endif
 854
 855 static void mt_remove(struct hid_device *hdev)
 856 {
 857         struct mt_device *td = hid_get_drvdata(hdev);
 858         sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
 859         hid_hw_stop(hdev);
 860         kfree(td);
 861         hid_set_drvdata(hdev, NULL);
 862 }
 863
 864 static const struct hid_device_id mt_devices[] = {
 865
 866         /* 3M panels */
 867         { .driver_data = MT_CLS_3M,
 868                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 869                         USB_DEVICE_ID_3M1968) },
 870         { .driver_data = MT_CLS_3M,
 871                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 872                         USB_DEVICE_ID_3M2256) },
 873         { .driver_data = MT_CLS_3M,
 874                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 875                         USB_DEVICE_ID_3M3266) },
 876
 877         /* ActionStar panels */
 878         { .driver_data = MT_CLS_DEFAULT,
 879                 MT_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 880                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 881
 882         /* Atmel panels */
 883         { .driver_data = MT_CLS_SERIAL,
 884                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 885                         USB_DEVICE_ID_ATMEL_MULTITOUCH) },
 886         { .driver_data = MT_CLS_SERIAL,
 887                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 888                         USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
 889
 890         /* Baanto multitouch devices */
 891         { .driver_data = MT_CLS_DEFAULT,
 892                 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
 893                         USB_DEVICE_ID_BAANTO_MT_190W2) },
 894         /* Cando panels */
 895         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 896                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 897                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 898         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 899                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 900                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 901         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 902                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 903                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 904         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 905                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 906                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 907
 908         /* Chunghwa Telecom touch panels */
 909         {  .driver_data = MT_CLS_DEFAULT,
 910                 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
 911                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
 912
 913         /* CVTouch panels */
 914         { .driver_data = MT_CLS_DEFAULT,
 915                 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
 916                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
 917
 918         /* Cypress panel */
 919         { .driver_data = MT_CLS_CYPRESS,
 920                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 921                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 922
 923         /* eGalax devices (resistive) */
 924         { .driver_data = MT_CLS_EGALAX,
 925                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 926                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
 927         { .driver_data = MT_CLS_EGALAX,
 928                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 929                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
 930
 931         /* eGalax devices (capacitive) */
 932         { .driver_data = MT_CLS_EGALAX,
 933                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 934                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
 935         { .driver_data = MT_CLS_EGALAX_SERIAL,
 936                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 937                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
 938         { .driver_data = MT_CLS_EGALAX_SERIAL,
 939                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 940                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
 941         { .driver_data = MT_CLS_EGALAX_SERIAL,
 942                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 943                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
 944         { .driver_data = MT_CLS_EGALAX_SERIAL,
 945                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 946                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
 947         { .driver_data = MT_CLS_EGALAX,
 948                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 949                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
 950         { .driver_data = MT_CLS_EGALAX_SERIAL,
 951                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 952                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
 953         { .driver_data = MT_CLS_EGALAX,
 954                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 955                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
 956         { .driver_data = MT_CLS_EGALAX_SERIAL,
 957                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 958                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
 959         { .driver_data = MT_CLS_EGALAX,
 960                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 961                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
 962         { .driver_data = MT_CLS_EGALAX,
 963                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 964                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
 965         { .driver_data = MT_CLS_EGALAX_SERIAL,
 966                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 967                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
 968         { .driver_data = MT_CLS_EGALAX_SERIAL,
 969                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 970                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
 971         { .driver_data = MT_CLS_EGALAX_SERIAL,
 972                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 973                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
 974         { .driver_data = MT_CLS_EGALAX,
 975                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 976                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
 977         { .driver_data = MT_CLS_EGALAX,
 978                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 979                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
 980         { .driver_data = MT_CLS_EGALAX,
 981                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 982                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
 983
 984         /* Elo TouchSystems IntelliTouch Plus panel */
 985         { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
 986                 MT_USB_DEVICE(USB_VENDOR_ID_ELO,
 987                         USB_DEVICE_ID_ELO_TS2515) },
 988
 989         /* Flatfrog Panels */
 990         { .driver_data = MT_CLS_FLATFROG,
 991                 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
 992                         USB_DEVICE_ID_MULTITOUCH_3200) },
 993
 994         /* GeneralTouch panel */
 995         { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
 996                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 997                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
 998         { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
 999                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1000                         USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1001
1002         /* Gametel game controller */
1003         { .driver_data = MT_CLS_DEFAULT,
1004                 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1005                         USB_DEVICE_ID_GAMETEL_MT_MODE) },
1006
1007         /* GoodTouch panels */
1008         { .driver_data = MT_CLS_DEFAULT,
1009                 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1010                         USB_DEVICE_ID_GOODTOUCH_000f) },
1011
1012         /* Hanvon panels */
1013         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1014                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1015                         USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1016
1017         /* Ideacom panel */
1018         { .driver_data = MT_CLS_SERIAL,
1019                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
1020                         USB_DEVICE_ID_IDEACOM_IDC6650) },
1021         { .driver_data = MT_CLS_SERIAL,
1022                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
1023                         USB_DEVICE_ID_IDEACOM_IDC6651) },
1024
1025         /* Ilitek dual touch panel */
1026         {  .driver_data = MT_CLS_DEFAULT,
1027                 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1028                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1029
1030         /* IRTOUCH panels */
1031         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1032                 MT_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
1033                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
1034
1035         /* LG Display panels */
1036         { .driver_data = MT_CLS_DEFAULT,
1037                 MT_USB_DEVICE(USB_VENDOR_ID_LG,
1038                         USB_DEVICE_ID_LG_MULTITOUCH) },
1039
1040         /* Lumio panels */
1041         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1042                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
1043                         USB_DEVICE_ID_CRYSTALTOUCH) },
1044         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1045                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
1046                         USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
1047
1048         /* MosArt panels */
1049         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1050                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1051                         USB_DEVICE_ID_ASUS_T91MT)},
1052         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1053                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1054                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1055         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1056                 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1057                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1058
1059         /* Panasonic panels */
1060         { .driver_data = MT_CLS_PANASONIC,
1061                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1062                         USB_DEVICE_ID_PANABOARD_UBT780) },
1063         { .driver_data = MT_CLS_PANASONIC,
1064                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1065                         USB_DEVICE_ID_PANABOARD_UBT880) },
1066
1067         /* Novatek Panel */
1068         { .driver_data = MT_CLS_DEFAULT,
1069                 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1070                         USB_DEVICE_ID_NOVATEK_PCT) },
1071
1072         /* PenMount panels */
1073         { .driver_data = MT_CLS_CONFIDENCE,
1074                 MT_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
1075                         USB_DEVICE_ID_PENMOUNT_PCI) },
1076
1077         /* PixArt optical touch screen */
1078         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1079                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1080                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1081         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1082                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1083                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1084         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1085                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1086                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1087
1088         /* PixCir-based panels */
1089         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1090                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON,
1091                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
1092         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1093                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1094                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1095
1096         /* Quanta-based panels */
1097         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1098                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1099                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1100         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1101                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1102                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1103         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1104                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1105                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) },
1106
1107         /* Stantum panels */
1108         { .driver_data = MT_CLS_CONFIDENCE,
1109                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM,
1110                         USB_DEVICE_ID_MTP)},
1111         { .driver_data = MT_CLS_CONFIDENCE,
1112                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1113                         USB_DEVICE_ID_MTP_STM)},
1114         { .driver_data = MT_CLS_CONFIDENCE,
1115                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
1116                         USB_DEVICE_ID_MTP_SITRONIX)},
1117
1118         /* TopSeed panels */
1119         { .driver_data = MT_CLS_TOPSEED,
1120                 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1121                         USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1122
1123         /* Touch International panels */
1124         { .driver_data = MT_CLS_DEFAULT,
1125                 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1126                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1127
1128         /* Unitec panels */
1129         { .driver_data = MT_CLS_DEFAULT,
1130                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1131                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1132         { .driver_data = MT_CLS_DEFAULT,
1133                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1134                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1135         /* XAT */
1136         { .driver_data = MT_CLS_DEFAULT,
1137                 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1138                         USB_DEVICE_ID_XAT_CSR) },
1139
1140         /* Xiroku */
1141         { .driver_data = MT_CLS_DEFAULT,
1142                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1143                         USB_DEVICE_ID_XIROKU_SPX) },
1144         { .driver_data = MT_CLS_DEFAULT,
1145                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1146                         USB_DEVICE_ID_XIROKU_MPX) },
1147         { .driver_data = MT_CLS_DEFAULT,
1148                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1149                         USB_DEVICE_ID_XIROKU_CSR) },
1150         { .driver_data = MT_CLS_DEFAULT,
1151                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1152                         USB_DEVICE_ID_XIROKU_SPX1) },
1153         { .driver_data = MT_CLS_DEFAULT,
1154                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1155                         USB_DEVICE_ID_XIROKU_MPX1) },
1156         { .driver_data = MT_CLS_DEFAULT,
1157                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1158                         USB_DEVICE_ID_XIROKU_CSR1) },
1159         { .driver_data = MT_CLS_DEFAULT,
1160                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1161                         USB_DEVICE_ID_XIROKU_SPX2) },
1162         { .driver_data = MT_CLS_DEFAULT,
1163                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1164                         USB_DEVICE_ID_XIROKU_MPX2) },
1165         { .driver_data = MT_CLS_DEFAULT,
1166                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1167                         USB_DEVICE_ID_XIROKU_CSR2) },
1168
1169         /* Zytronic panels */
1170         { .driver_data = MT_CLS_SERIAL,
1171                 MT_USB_DEVICE(USB_VENDOR_ID_ZYTRONIC,
1172                         USB_DEVICE_ID_ZYTRONIC_ZXY100) },
1173
1174         /* Generic MT device */
1175         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1176         { }
1177 };
1178 MODULE_DEVICE_TABLE(hid, mt_devices);
1179
1180 static const struct hid_usage_id mt_grabbed_usages[] = {
1181         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1182         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1183 };
1184
1185 static struct hid_driver mt_driver = {
1186         .name = "hid-multitouch",
1187         .id_table = mt_devices,
1188         .probe = mt_probe,
1189         .remove = mt_remove,
1190         .input_mapping = mt_input_mapping,
1191         .input_mapped = mt_input_mapped,
1192         .input_configured = mt_input_configured,
1193         .feature_mapping = mt_feature_mapping,
1194         .usage_table = mt_grabbed_usages,
1195         .event = mt_event,
1196 #ifdef CONFIG_PM
1197         .reset_resume = mt_reset_resume,
1198         .resume = mt_resume,
1199 #endif
1200 };
1201
1202 static int __init mt_init(void)
1203 {
1204         return hid_register_driver(&mt_driver);
1205 }
1206
1207 static void __exit mt_exit(void)
1208 {
1209         hid_unregister_driver(&mt_driver);
1210 }
1211
1212 module_init(mt_init);
1213 module_exit(mt_exit);