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) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
   6  *  Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
   7  *  Copyright (c) 2012-2013 Red Hat, Inc
   8  *
   9  *  This code is partly based on hid-egalax.c:
  10  *
  11  *  Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
  12  *  Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
  13  *  Copyright (c) 2010 Canonical, Ltd.
  14  *
  15  *  This code is partly based on hid-3m-pct.c:
  16  *
  17  *  Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
  18  *  Copyright (c) 2010      Henrik Rydberg <rydberg@euromail.se>
  19  *  Copyright (c) 2010      Canonical, Ltd.
  20  *
  21  */
  22
  23 /*
  24  * This program is free software; you can redistribute it and/or modify it
  25  * under the terms of the GNU General Public License as published by the Free
  26  * Software Foundation; either version 2 of the License, or (at your option)
  27  * any later version.
  28  */
  29
  30 /*
  31  * This driver is regularly tested thanks to the tool hid-test[1].
  32  * This tool relies on hid-replay[2] and a database of hid devices[3].
  33  * Please run these regression tests before patching this module so that
  34  * your patch won't break existing known devices.
  35  *
  36  * [1] https://github.com/bentiss/hid-test
  37  * [2] https://github.com/bentiss/hid-replay
  38  * [3] https://github.com/bentiss/hid-devices
  39  */
  40
  41 #include <linux/device.h>
  42 #include <linux/hid.h>
  43 #include <linux/module.h>
  44 #include <linux/slab.h>
  45 #include <linux/usb.h>
  46 #include <linux/input/mt.h>
  47
  48
  49 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
  50 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
  51 MODULE_DESCRIPTION("HID multitouch panels");
  52 MODULE_LICENSE("GPL");
  53
  54 #include "hid-ids.h"
  55
  56 /* quirks to control the device */
  57 #define MT_QUIRK_NOT_SEEN_MEANS_UP      (1 << 0)
  58 #define MT_QUIRK_SLOT_IS_CONTACTID      (1 << 1)
  59 #define MT_QUIRK_CYPRESS                (1 << 2)
  60 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER  (1 << 3)
  61 #define MT_QUIRK_ALWAYS_VALID           (1 << 4)
  62 #define MT_QUIRK_VALID_IS_INRANGE       (1 << 5)
  63 #define MT_QUIRK_VALID_IS_CONFIDENCE    (1 << 6)
  64 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE    (1 << 8)
  65 #define MT_QUIRK_NO_AREA                (1 << 9)
  66 #define MT_QUIRK_IGNORE_DUPLICATES      (1 << 10)
  67 #define MT_QUIRK_HOVERING               (1 << 11)
  68 #define MT_QUIRK_CONTACT_CNT_ACCURATE   (1 << 12)
  69
  70 struct mt_slot {
  71         __s32 x, y, cx, cy, p, w, h;
  72         __s32 contactid;        /* the device ContactID assigned to this slot */
  73         bool touch_state;       /* is the touch valid? */
  74         bool inrange_state;     /* is the finger in proximity of the sensor? */
  75 };
  76
  77 struct mt_class {
  78         __s32 name;     /* MT_CLS */
  79         __s32 quirks;
  80         __s32 sn_move;  /* Signal/noise ratio for move events */
  81         __s32 sn_width; /* Signal/noise ratio for width events */
  82         __s32 sn_height;        /* Signal/noise ratio for height events */
  83         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
  84         __u8 maxcontacts;
  85         bool is_indirect;       /* true for touchpads */
  86 };
  87
  88 struct mt_fields {
  89         unsigned usages[HID_MAX_FIELDS];
  90         unsigned int length;
  91 };
  92
  93 struct mt_device {
  94         struct mt_slot curdata; /* placeholder of incoming data */
  95         struct mt_class mtclass;        /* our mt device class */
  96         struct mt_fields *fields;       /* temporary placeholder for storing the
  97                                            multitouch fields */
  98         int cc_index;   /* contact count field index in the report */
  99         int cc_value_index;     /* contact count value index in the field */
 100         unsigned last_slot_field;       /* the last field of a slot */
 101         unsigned mt_report_id;  /* the report ID of the multitouch device */
 102         __s8 inputmode;         /* InputMode HID feature, -1 if non-existent */
 103         __s8 inputmode_index;   /* InputMode HID feature index in the report */
 104         __s8 maxcontact_report_id;      /* Maximum Contact Number HID feature,
 105                                    -1 if non-existent */
 106         __u8 num_received;      /* how many contacts we received */
 107         __u8 num_expected;      /* expected last contact index */
 108         __u8 maxcontacts;
 109         __u8 touches_by_report; /* how many touches are present in one report:
 110                                 * 1 means we should use a serial protocol
 111                                 * > 1 means hybrid (multitouch) protocol */
 112         bool serial_maybe;      /* need to check for serial protocol */
 113         bool curvalid;          /* is the current contact valid? */
 114         unsigned mt_flags;      /* flags to pass to input-mt */
 115 };
 116
 117 static void mt_post_parse_default_settings(struct mt_device *td);
 118 static void mt_post_parse(struct mt_device *td);
 119
 120 /* classes of device behavior */
 121 #define MT_CLS_DEFAULT                          0x0001
 122
 123 #define MT_CLS_SERIAL                           0x0002
 124 #define MT_CLS_CONFIDENCE                       0x0003
 125 #define MT_CLS_CONFIDENCE_CONTACT_ID            0x0004
 126 #define MT_CLS_CONFIDENCE_MINUS_ONE             0x0005
 127 #define MT_CLS_DUAL_INRANGE_CONTACTID           0x0006
 128 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       0x0007
 129 #define MT_CLS_DUAL_NSMU_CONTACTID              0x0008
 130 #define MT_CLS_INRANGE_CONTACTNUMBER            0x0009
 131 #define MT_CLS_NSMU                             0x000a
 132 #define MT_CLS_DUAL_CONTACT_NUMBER              0x0010
 133 #define MT_CLS_DUAL_CONTACT_ID                  0x0011
 134
 135 /* vendor specific classes */
 136 #define MT_CLS_3M                               0x0101
 137 #define MT_CLS_CYPRESS                          0x0102
 138 #define MT_CLS_EGALAX                           0x0103
 139 #define MT_CLS_EGALAX_SERIAL                    0x0104
 140 #define MT_CLS_TOPSEED                          0x0105
 141 #define MT_CLS_PANASONIC                        0x0106
 142 #define MT_CLS_FLATFROG                         0x0107
 143 #define MT_CLS_GENERALTOUCH_TWOFINGERS          0x0108
 144 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS      0x0109
 145
 146 #define MT_DEFAULT_MAXCONTACT   10
 147 #define MT_MAX_MAXCONTACT       250
 148
 149 #define MT_USB_DEVICE(v, p)     HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
 150 #define MT_BT_DEVICE(v, p)      HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
 151
 152 /*
 153  * these device-dependent functions determine what slot corresponds
 154  * to a valid contact that was just read.
 155  */
 156
 157 static int cypress_compute_slot(struct mt_device *td)
 158 {
 159         if (td->curdata.contactid != 0 || td->num_received == 0)
 160                 return td->curdata.contactid;
 161         else
 162                 return -1;
 163 }
 164
 165 static struct mt_class mt_classes[] = {
 166         { .name = MT_CLS_DEFAULT,
 167                 .quirks = MT_QUIRK_ALWAYS_VALID |
 168                         MT_QUIRK_CONTACT_CNT_ACCURATE },
 169         { .name = MT_CLS_NSMU,
 170                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 171         { .name = MT_CLS_SERIAL,
 172                 .quirks = MT_QUIRK_ALWAYS_VALID},
 173         { .name = MT_CLS_CONFIDENCE,
 174                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 175         { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
 176                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 177                         MT_QUIRK_SLOT_IS_CONTACTID },
 178         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 179                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 180                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 181         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 182                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 183                         MT_QUIRK_SLOT_IS_CONTACTID,
 184                 .maxcontacts = 2 },
 185         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 186                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 187                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 188                 .maxcontacts = 2 },
 189         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
 190                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 191                         MT_QUIRK_SLOT_IS_CONTACTID,
 192                 .maxcontacts = 2 },
 193         { .name = MT_CLS_INRANGE_CONTACTNUMBER,
 194                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 195                         MT_QUIRK_SLOT_IS_CONTACTNUMBER },
 196         { .name = MT_CLS_DUAL_CONTACT_NUMBER,
 197                 .quirks = MT_QUIRK_ALWAYS_VALID |
 198                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 199                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 200                 .maxcontacts = 2 },
 201         { .name = MT_CLS_DUAL_CONTACT_ID,
 202                 .quirks = MT_QUIRK_ALWAYS_VALID |
 203                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 204                         MT_QUIRK_SLOT_IS_CONTACTID,
 205                 .maxcontacts = 2 },
 206
 207         /*
 208          * vendor specific classes
 209          */
 210         { .name = MT_CLS_3M,
 211                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 212                         MT_QUIRK_SLOT_IS_CONTACTID,
 213                 .sn_move = 2048,
 214                 .sn_width = 128,
 215                 .sn_height = 128,
 216                 .maxcontacts = 60,
 217         },
 218         { .name = MT_CLS_CYPRESS,
 219                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 220                         MT_QUIRK_CYPRESS,
 221                 .maxcontacts = 10 },
 222         { .name = MT_CLS_EGALAX,
 223                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 224                         MT_QUIRK_VALID_IS_INRANGE,
 225                 .sn_move = 4096,
 226                 .sn_pressure = 32,
 227         },
 228         { .name = MT_CLS_EGALAX_SERIAL,
 229                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 230                         MT_QUIRK_ALWAYS_VALID,
 231                 .sn_move = 4096,
 232                 .sn_pressure = 32,
 233         },
 234         { .name = MT_CLS_TOPSEED,
 235                 .quirks = MT_QUIRK_ALWAYS_VALID,
 236                 .is_indirect = true,
 237                 .maxcontacts = 2,
 238         },
 239         { .name = MT_CLS_PANASONIC,
 240                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
 241                 .maxcontacts = 4 },
 242         { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
 243                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 244                         MT_QUIRK_VALID_IS_INRANGE |
 245                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 246                 .maxcontacts = 2
 247         },
 248         { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
 249                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 250                         MT_QUIRK_SLOT_IS_CONTACTNUMBER
 251         },
 252
 253         { .name = MT_CLS_FLATFROG,
 254                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 255                         MT_QUIRK_NO_AREA,
 256                 .sn_move = 2048,
 257                 .maxcontacts = 40,
 258         },
 259         { }
 260 };
 261
 262 static ssize_t mt_show_quirks(struct device *dev,
 263                            struct device_attribute *attr,
 264                            char *buf)
 265 {
 266         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 267         struct mt_device *td = hid_get_drvdata(hdev);
 268
 269         return sprintf(buf, "%u\n", td->mtclass.quirks);
 270 }
 271
 272 static ssize_t mt_set_quirks(struct device *dev,
 273                           struct device_attribute *attr,
 274                           const char *buf, size_t count)
 275 {
 276         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 277         struct mt_device *td = hid_get_drvdata(hdev);
 278
 279         unsigned long val;
 280
 281         if (kstrtoul(buf, 0, &val))
 282                 return -EINVAL;
 283
 284         td->mtclass.quirks = val;
 285
 286         if (td->cc_index < 0)
 287                 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 288
 289         return count;
 290 }
 291
 292 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
 293
 294 static struct attribute *sysfs_attrs[] = {
 295         &dev_attr_quirks.attr,
 296         NULL
 297 };
 298
 299 static struct attribute_group mt_attribute_group = {
 300         .attrs = sysfs_attrs
 301 };
 302
 303 static void mt_feature_mapping(struct hid_device *hdev,
 304                 struct hid_field *field, struct hid_usage *usage)
 305 {
 306         struct mt_device *td = hid_get_drvdata(hdev);
 307         int i;
 308
 309         switch (usage->hid) {
 310         case HID_DG_INPUTMODE:
 311                 td->inputmode = field->report->id;
 312                 td->inputmode_index = 0; /* has to be updated below */
 313
 314                 for (i=0; i < field->maxusage; i++) {
 315                         if (field->usage[i].hid == usage->hid) {
 316                                 td->inputmode_index = i;
 317                                 break;
 318                         }
 319                 }
 320
 321                 break;
 322         case HID_DG_CONTACTMAX:
 323                 td->maxcontact_report_id = field->report->id;
 324                 td->maxcontacts = field->value[0];
 325                 if (!td->maxcontacts &&
 326                     field->logical_maximum <= MT_MAX_MAXCONTACT)
 327                         td->maxcontacts = field->logical_maximum;
 328                 if (td->mtclass.maxcontacts)
 329                         /* check if the maxcontacts is given by the class */
 330                         td->maxcontacts = td->mtclass.maxcontacts;
 331
 332                 break;
 333         case 0xff0000c5:
 334                 if (field->report_count == 256 && field->report_size == 8) {
 335                         /* Win 8 devices need special quirks */
 336                         __s32 *quirks = &td->mtclass.quirks;
 337                         *quirks |= MT_QUIRK_ALWAYS_VALID;
 338                         *quirks |= MT_QUIRK_IGNORE_DUPLICATES;
 339                         *quirks |= MT_QUIRK_HOVERING;
 340                         *quirks |= MT_QUIRK_CONTACT_CNT_ACCURATE;
 341                         *quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 342                         *quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 343                         *quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 344                 }
 345                 break;
 346         }
 347 }
 348
 349 static void set_abs(struct input_dev *input, unsigned int code,
 350                 struct hid_field *field, int snratio)
 351 {
 352         int fmin = field->logical_minimum;
 353         int fmax = field->logical_maximum;
 354         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 355         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 356         input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
 357 }
 358
 359 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
 360                 struct hid_input *hi)
 361 {
 362         struct mt_fields *f = td->fields;
 363
 364         if (f->length >= HID_MAX_FIELDS)
 365                 return;
 366
 367         f->usages[f->length++] = usage->hid;
 368 }
 369
 370 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 371                 struct hid_field *field, struct hid_usage *usage,
 372                 unsigned long **bit, int *max)
 373 {
 374         struct mt_device *td = hid_get_drvdata(hdev);
 375         struct mt_class *cls = &td->mtclass;
 376         int code;
 377         struct hid_usage *prev_usage = NULL;
 378
 379         if (field->application == HID_DG_TOUCHSCREEN)
 380                 td->mt_flags |= INPUT_MT_DIRECT;
 381
 382         /*
 383          * Model touchscreens providing buttons as touchpads.
 384          */
 385         if (field->application == HID_DG_TOUCHPAD ||
 386             (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
 387                 td->mt_flags |= INPUT_MT_POINTER;
 388
 389         if (usage->usage_index)
 390                 prev_usage = &field->usage[usage->usage_index - 1];
 391
 392         switch (usage->hid & HID_USAGE_PAGE) {
 393
 394         case HID_UP_GENDESK:
 395                 switch (usage->hid) {
 396                 case HID_GD_X:
 397                         if (prev_usage && (prev_usage->hid == usage->hid)) {
 398                                 hid_map_usage(hi, usage, bit, max,
 399                                         EV_ABS, ABS_MT_TOOL_X);
 400                                 set_abs(hi->input, ABS_MT_TOOL_X, field,
 401                                         cls->sn_move);
 402                         } else {
 403                                 hid_map_usage(hi, usage, bit, max,
 404                                         EV_ABS, ABS_MT_POSITION_X);
 405                                 set_abs(hi->input, ABS_MT_POSITION_X, field,
 406                                         cls->sn_move);
 407                         }
 408
 409                         mt_store_field(usage, td, hi);
 410                         return 1;
 411                 case HID_GD_Y:
 412                         if (prev_usage && (prev_usage->hid == usage->hid)) {
 413                                 hid_map_usage(hi, usage, bit, max,
 414                                         EV_ABS, ABS_MT_TOOL_Y);
 415                                 set_abs(hi->input, ABS_MT_TOOL_Y, field,
 416                                         cls->sn_move);
 417                         } else {
 418                                 hid_map_usage(hi, usage, bit, max,
 419                                         EV_ABS, ABS_MT_POSITION_Y);
 420                                 set_abs(hi->input, ABS_MT_POSITION_Y, field,
 421                                         cls->sn_move);
 422                         }
 423
 424                         mt_store_field(usage, td, hi);
 425                         return 1;
 426                 }
 427                 return 0;
 428
 429         case HID_UP_DIGITIZER:
 430                 switch (usage->hid) {
 431                 case HID_DG_INRANGE:
 432                         if (cls->quirks & MT_QUIRK_HOVERING) {
 433                                 hid_map_usage(hi, usage, bit, max,
 434                                         EV_ABS, ABS_MT_DISTANCE);
 435                                 input_set_abs_params(hi->input,
 436                                         ABS_MT_DISTANCE, 0, 1, 0, 0);
 437                         }
 438                         mt_store_field(usage, td, hi);
 439                         return 1;
 440                 case HID_DG_CONFIDENCE:
 441                         mt_store_field(usage, td, hi);
 442                         return 1;
 443                 case HID_DG_TIPSWITCH:
 444                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 445                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 446                         mt_store_field(usage, td, hi);
 447                         return 1;
 448                 case HID_DG_CONTACTID:
 449                         mt_store_field(usage, td, hi);
 450                         td->touches_by_report++;
 451                         td->mt_report_id = field->report->id;
 452                         return 1;
 453                 case HID_DG_WIDTH:
 454                         hid_map_usage(hi, usage, bit, max,
 455                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 456                         if (!(cls->quirks & MT_QUIRK_NO_AREA))
 457                                 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 458                                         cls->sn_width);
 459                         mt_store_field(usage, td, hi);
 460                         return 1;
 461                 case HID_DG_HEIGHT:
 462                         hid_map_usage(hi, usage, bit, max,
 463                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 464                         if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
 465                                 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 466                                         cls->sn_height);
 467                                 input_set_abs_params(hi->input,
 468                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 469                         }
 470                         mt_store_field(usage, td, hi);
 471                         return 1;
 472                 case HID_DG_TIPPRESSURE:
 473                         hid_map_usage(hi, usage, bit, max,
 474                                         EV_ABS, ABS_MT_PRESSURE);
 475                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 476                                 cls->sn_pressure);
 477                         mt_store_field(usage, td, hi);
 478                         return 1;
 479                 case HID_DG_CONTACTCOUNT:
 480                         td->cc_index = field->index;
 481                         td->cc_value_index = usage->usage_index;
 482                         return 1;
 483                 case HID_DG_CONTACTMAX:
 484                         /* we don't set td->last_slot_field as contactcount and
 485                          * contact max are global to the report */
 486                         return -1;
 487                 case HID_DG_TOUCH:
 488                         /* Legacy devices use TIPSWITCH and not TOUCH.
 489                          * Let's just ignore this field. */
 490                         return -1;
 491                 }
 492                 /* let hid-input decide for the others */
 493                 return 0;
 494
 495         case HID_UP_BUTTON:
 496                 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
 497                 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
 498                 input_set_capability(hi->input, EV_KEY, code);
 499                 return 1;
 500
 501         case 0xff000000:
 502                 /* we do not want to map these: no input-oriented meaning */
 503                 return -1;
 504         }
 505
 506         return 0;
 507 }
 508
 509 static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 510                 struct hid_field *field, struct hid_usage *usage,
 511                 unsigned long **bit, int *max)
 512 {
 513         if (usage->type == EV_KEY || usage->type == EV_ABS)
 514                 set_bit(usage->type, hi->input->evbit);
 515
 516         return -1;
 517 }
 518
 519 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
 520 {
 521         __s32 quirks = td->mtclass.quirks;
 522
 523         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 524                 return td->curdata.contactid;
 525
 526         if (quirks & MT_QUIRK_CYPRESS)
 527                 return cypress_compute_slot(td);
 528
 529         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 530                 return td->num_received;
 531
 532         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 533                 return td->curdata.contactid - 1;
 534
 535         return input_mt_get_slot_by_key(input, td->curdata.contactid);
 536 }
 537
 538 /*
 539  * this function is called when a whole contact has been processed,
 540  * so that it can assign it to a slot and store the data there
 541  */
 542 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
 543 {
 544         if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
 545             td->num_received >= td->num_expected)
 546                 return;
 547
 548         if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
 549                 int slotnum = mt_compute_slot(td, input);
 550                 struct mt_slot *s = &td->curdata;
 551                 struct input_mt *mt = input->mt;
 552
 553                 if (slotnum < 0 || slotnum >= td->maxcontacts)
 554                         return;
 555
 556                 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
 557                         struct input_mt_slot *slot = &mt->slots[slotnum];
 558                         if (input_mt_is_active(slot) &&
 559                             input_mt_is_used(mt, slot))
 560                                 return;
 561                 }
 562
 563                 input_mt_slot(input, slotnum);
 564                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 565                         s->touch_state || s->inrange_state);
 566                 if (s->touch_state || s->inrange_state) {
 567                         /* this finger is in proximity of the sensor */
 568                         int wide = (s->w > s->h);
 569                         /* divided by two to match visual scale of touch */
 570                         int major = max(s->w, s->h) >> 1;
 571                         int minor = min(s->w, s->h) >> 1;
 572
 573                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 574                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 575                         input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
 576                         input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
 577                         input_event(input, EV_ABS, ABS_MT_DISTANCE,
 578                                 !s->touch_state);
 579                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 580                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 581                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 582                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 583                 }
 584         }
 585
 586         td->num_received++;
 587 }
 588
 589 /*
 590  * this function is called when a whole packet has been received and processed,
 591  * so that it can decide what to send to the input layer.
 592  */
 593 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
 594 {
 595         input_mt_sync_frame(input);
 596         input_sync(input);
 597         td->num_received = 0;
 598 }
 599
 600 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
 601                                 struct hid_usage *usage, __s32 value)
 602 {
 603         /* we will handle the hidinput part later, now remains hiddev */
 604         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 605                 hid->hiddev_hid_event(hid, field, usage, value);
 606
 607         return 1;
 608 }
 609
 610 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
 611                                 struct hid_usage *usage, __s32 value)
 612 {
 613         struct mt_device *td = hid_get_drvdata(hid);
 614         __s32 quirks = td->mtclass.quirks;
 615
 616         if (hid->claimed & HID_CLAIMED_INPUT) {
 617                 switch (usage->hid) {
 618                 case HID_DG_INRANGE:
 619                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 620                                 td->curvalid = value;
 621                         if (quirks & MT_QUIRK_HOVERING)
 622                                 td->curdata.inrange_state = value;
 623                         break;
 624                 case HID_DG_TIPSWITCH:
 625                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 626                                 td->curvalid = value;
 627                         td->curdata.touch_state = value;
 628                         break;
 629                 case HID_DG_CONFIDENCE:
 630                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 631                                 td->curvalid = value;
 632                         break;
 633                 case HID_DG_CONTACTID:
 634                         td->curdata.contactid = value;
 635                         break;
 636                 case HID_DG_TIPPRESSURE:
 637                         td->curdata.p = value;
 638                         break;
 639                 case HID_GD_X:
 640                         if (usage->code == ABS_MT_TOOL_X)
 641                                 td->curdata.cx = value;
 642                         else
 643                                 td->curdata.x = value;
 644                         break;
 645                 case HID_GD_Y:
 646                         if (usage->code == ABS_MT_TOOL_Y)
 647                                 td->curdata.cy = value;
 648                         else
 649                                 td->curdata.y = value;
 650                         break;
 651                 case HID_DG_WIDTH:
 652                         td->curdata.w = value;
 653                         break;
 654                 case HID_DG_HEIGHT:
 655                         td->curdata.h = value;
 656                         break;
 657                 case HID_DG_CONTACTCOUNT:
 658                         break;
 659                 case HID_DG_TOUCH:
 660                         /* do nothing */
 661                         break;
 662
 663                 default:
 664                         return;
 665                 }
 666
 667                 if (usage->usage_index + 1 == field->report_count) {
 668                         /* we only take into account the last report. */
 669                         if (usage->hid == td->last_slot_field)
 670                                 mt_complete_slot(td, field->hidinput->input);
 671                 }
 672
 673         }
 674 }
 675
 676 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
 677 {
 678         struct mt_device *td = hid_get_drvdata(hid);
 679         struct hid_field *field;
 680         unsigned count;
 681         int r, n;
 682
 683         /*
 684          * Includes multi-packet support where subsequent
 685          * packets are sent with zero contactcount.
 686          */
 687         if (td->cc_index >= 0) {
 688                 struct hid_field *field = report->field[td->cc_index];
 689                 int value = field->value[td->cc_value_index];
 690                 if (value)
 691                         td->num_expected = value;
 692         }
 693
 694         for (r = 0; r < report->maxfield; r++) {
 695                 field = report->field[r];
 696                 count = field->report_count;
 697
 698                 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
 699                         continue;
 700
 701                 for (n = 0; n < count; n++)
 702                         mt_process_mt_event(hid, field, &field->usage[n],
 703                                         field->value[n]);
 704         }
 705
 706         if (td->num_received >= td->num_expected)
 707                 mt_sync_frame(td, report->field[0]->hidinput->input);
 708 }
 709
 710 static void mt_touch_input_configured(struct hid_device *hdev,
 711                                         struct hid_input *hi)
 712 {
 713         struct mt_device *td = hid_get_drvdata(hdev);
 714         struct mt_class *cls = &td->mtclass;
 715         struct input_dev *input = hi->input;
 716
 717         if (!td->maxcontacts)
 718                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 719
 720         mt_post_parse(td);
 721         if (td->serial_maybe)
 722                 mt_post_parse_default_settings(td);
 723
 724         if (cls->is_indirect)
 725                 td->mt_flags |= INPUT_MT_POINTER;
 726
 727         if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 728                 td->mt_flags |= INPUT_MT_DROP_UNUSED;
 729
 730         input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
 731
 732         td->mt_flags = 0;
 733 }
 734
 735 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 736                 struct hid_field *field, struct hid_usage *usage,
 737                 unsigned long **bit, int *max)
 738 {
 739         /* Only map fields from TouchScreen or TouchPad collections.
 740         * We need to ignore fields that belong to other collections
 741         * such as Mouse that might have the same GenericDesktop usages. */
 742         if (field->application != HID_DG_TOUCHSCREEN &&
 743             field->application != HID_DG_TOUCHPAD)
 744                 return 0;
 745
 746         /* eGalax devices provide a Digitizer.Stylus input which overrides
 747          * the correct Digitizers.Finger X/Y ranges.
 748          * Let's just ignore this input. */
 749         if (field->physical == HID_DG_STYLUS)
 750                 return -1;
 751
 752         return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
 753 }
 754
 755 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 756                 struct hid_field *field, struct hid_usage *usage,
 757                 unsigned long **bit, int *max)
 758 {
 759         return mt_touch_input_mapped(hdev, hi, field, usage, bit, max);
 760 }
 761
 762 static int mt_event(struct hid_device *hid, struct hid_field *field,
 763                                 struct hid_usage *usage, __s32 value)
 764 {
 765         struct mt_device *td = hid_get_drvdata(hid);
 766
 767         if (field->report->id == td->mt_report_id)
 768                 return mt_touch_event(hid, field, usage, value);
 769
 770         /* ignore other reports */
 771         return 1;
 772 }
 773
 774 static void mt_report(struct hid_device *hid, struct hid_report *report)
 775 {
 776         struct mt_device *td = hid_get_drvdata(hid);
 777
 778         if (!(hid->claimed & HID_CLAIMED_INPUT))
 779                 return;
 780
 781         if (report->id == td->mt_report_id)
 782                 mt_touch_report(hid, report);
 783 }
 784
 785 static void mt_set_input_mode(struct hid_device *hdev)
 786 {
 787         struct mt_device *td = hid_get_drvdata(hdev);
 788         struct hid_report *r;
 789         struct hid_report_enum *re;
 790
 791         if (td->inputmode < 0)
 792                 return;
 793
 794         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 795         r = re->report_id_hash[td->inputmode];
 796         if (r) {
 797                 r->field[0]->value[td->inputmode_index] = 0x02;
 798                 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
 799         }
 800 }
 801
 802 static void mt_set_maxcontacts(struct hid_device *hdev)
 803 {
 804         struct mt_device *td = hid_get_drvdata(hdev);
 805         struct hid_report *r;
 806         struct hid_report_enum *re;
 807         int fieldmax, max;
 808
 809         if (td->maxcontact_report_id < 0)
 810                 return;
 811
 812         if (!td->mtclass.maxcontacts)
 813                 return;
 814
 815         re = &hdev->report_enum[HID_FEATURE_REPORT];
 816         r = re->report_id_hash[td->maxcontact_report_id];
 817         if (r) {
 818                 max = td->mtclass.maxcontacts;
 819                 fieldmax = r->field[0]->logical_maximum;
 820                 max = min(fieldmax, max);
 821                 if (r->field[0]->value[0] != max) {
 822                         r->field[0]->value[0] = max;
 823                         hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
 824                 }
 825         }
 826 }
 827
 828 static void mt_post_parse_default_settings(struct mt_device *td)
 829 {
 830         __s32 quirks = td->mtclass.quirks;
 831
 832         /* unknown serial device needs special quirks */
 833         if (td->touches_by_report == 1) {
 834                 quirks |= MT_QUIRK_ALWAYS_VALID;
 835                 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 836                 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 837                 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 838                 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 839         }
 840
 841         td->mtclass.quirks = quirks;
 842 }
 843
 844 static void mt_post_parse(struct mt_device *td)
 845 {
 846         struct mt_fields *f = td->fields;
 847         struct mt_class *cls = &td->mtclass;
 848
 849         if (td->touches_by_report > 0) {
 850                 int field_count_per_touch = f->length / td->touches_by_report;
 851                 td->last_slot_field = f->usages[field_count_per_touch - 1];
 852         }
 853
 854         if (td->cc_index < 0)
 855                 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 856 }
 857
 858 static void mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
 859 {
 860         struct input_dev *input = hi->input;
 861
 862         /* Only initialize slots for MT input devices */
 863         if (!test_bit(ABS_MT_POSITION_X, input->absbit))
 864                 return;
 865
 866         mt_touch_input_configured(hdev, hi);
 867 }
 868
 869 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 870 {
 871         int ret, i;
 872         struct mt_device *td;
 873         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 874
 875         for (i = 0; mt_classes[i].name ; i++) {
 876                 if (id->driver_data == mt_classes[i].name) {
 877                         mtclass = &(mt_classes[i]);
 878                         break;
 879                 }
 880         }
 881
 882         /* This allows the driver to correctly support devices
 883          * that emit events over several HID messages.
 884          */
 885         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 886
 887         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 888         if (!td) {
 889                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 890                 return -ENOMEM;
 891         }
 892         td->mtclass = *mtclass;
 893         td->inputmode = -1;
 894         td->maxcontact_report_id = -1;
 895         td->cc_index = -1;
 896         hid_set_drvdata(hdev, td);
 897
 898         td->fields = kzalloc(sizeof(struct mt_fields), GFP_KERNEL);
 899         if (!td->fields) {
 900                 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
 901                 ret = -ENOMEM;
 902                 goto fail;
 903         }
 904
 905         if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
 906                 td->serial_maybe = true;
 907
 908         ret = hid_parse(hdev);
 909         if (ret != 0)
 910                 goto fail;
 911
 912         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 913         if (ret)
 914                 goto fail;
 915
 916         ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
 917
 918         mt_set_maxcontacts(hdev);
 919         mt_set_input_mode(hdev);
 920
 921         kfree(td->fields);
 922         td->fields = NULL;
 923
 924         return 0;
 925
 926 fail:
 927         kfree(td->fields);
 928         kfree(td);
 929         return ret;
 930 }
 931
 932 #ifdef CONFIG_PM
 933 static int mt_reset_resume(struct hid_device *hdev)
 934 {
 935         mt_set_maxcontacts(hdev);
 936         mt_set_input_mode(hdev);
 937         return 0;
 938 }
 939
 940 static int mt_resume(struct hid_device *hdev)
 941 {
 942         /* Some Elan legacy devices require SET_IDLE to be set on resume.
 943          * It should be safe to send it to other devices too.
 944          * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
 945
 946         hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
 947
 948         return 0;
 949 }
 950 #endif
 951
 952 static void mt_remove(struct hid_device *hdev)
 953 {
 954         struct mt_device *td = hid_get_drvdata(hdev);
 955         sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
 956         hid_hw_stop(hdev);
 957         kfree(td);
 958         hid_set_drvdata(hdev, NULL);
 959 }
 960
 961 static const struct hid_device_id mt_devices[] = {
 962
 963         /* 3M panels */
 964         { .driver_data = MT_CLS_3M,
 965                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 966                         USB_DEVICE_ID_3M1968) },
 967         { .driver_data = MT_CLS_3M,
 968                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 969                         USB_DEVICE_ID_3M2256) },
 970         { .driver_data = MT_CLS_3M,
 971                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 972                         USB_DEVICE_ID_3M3266) },
 973
 974         /* ActionStar panels */
 975         { .driver_data = MT_CLS_NSMU,
 976                 MT_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 977                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 978
 979         /* Atmel panels */
 980         { .driver_data = MT_CLS_SERIAL,
 981                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 982                         USB_DEVICE_ID_ATMEL_MULTITOUCH) },
 983         { .driver_data = MT_CLS_SERIAL,
 984                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 985                         USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
 986
 987         /* Baanto multitouch devices */
 988         { .driver_data = MT_CLS_NSMU,
 989                 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
 990                         USB_DEVICE_ID_BAANTO_MT_190W2) },
 991         /* Cando panels */
 992         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 993                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 994                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 995         { .driver_data = MT_CLS_DUAL_CONTACT_NUMBER,
 996                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 997                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 998         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 999                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1000                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
1001         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1002                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1003                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1004
1005         /* Chunghwa Telecom touch panels */
1006         {  .driver_data = MT_CLS_NSMU,
1007                 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1008                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1009
1010         /* CVTouch panels */
1011         { .driver_data = MT_CLS_NSMU,
1012                 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1013                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
1014
1015         /* Cypress panel */
1016         { .driver_data = MT_CLS_CYPRESS,
1017                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
1018                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
1019
1020         /* eGalax devices (resistive) */
1021         { .driver_data = MT_CLS_EGALAX,
1022                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1023                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1024         { .driver_data = MT_CLS_EGALAX,
1025                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1026                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1027
1028         /* eGalax devices (capacitive) */
1029         { .driver_data = MT_CLS_EGALAX,
1030                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1031                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1032         { .driver_data = MT_CLS_EGALAX_SERIAL,
1033                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1034                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1035         { .driver_data = MT_CLS_EGALAX_SERIAL,
1036                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1037                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1038         { .driver_data = MT_CLS_EGALAX_SERIAL,
1039                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1040                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1041         { .driver_data = MT_CLS_EGALAX_SERIAL,
1042                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1043                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1044         { .driver_data = MT_CLS_EGALAX,
1045                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1046                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1047         { .driver_data = MT_CLS_EGALAX_SERIAL,
1048                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1049                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1050         { .driver_data = MT_CLS_EGALAX,
1051                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1052                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1053         { .driver_data = MT_CLS_EGALAX_SERIAL,
1054                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1055                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1056         { .driver_data = MT_CLS_EGALAX,
1057                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1058                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1059         { .driver_data = MT_CLS_EGALAX,
1060                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1061                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1062         { .driver_data = MT_CLS_EGALAX_SERIAL,
1063                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1064                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1065         { .driver_data = MT_CLS_EGALAX_SERIAL,
1066                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1067                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1068         { .driver_data = MT_CLS_EGALAX_SERIAL,
1069                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1070                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1071         { .driver_data = MT_CLS_EGALAX,
1072                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1073                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1074         { .driver_data = MT_CLS_EGALAX,
1075                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1076                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1077         { .driver_data = MT_CLS_EGALAX,
1078                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1079                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1080
1081         /* Elo TouchSystems IntelliTouch Plus panel */
1082         { .driver_data = MT_CLS_DUAL_CONTACT_ID,
1083                 MT_USB_DEVICE(USB_VENDOR_ID_ELO,
1084                         USB_DEVICE_ID_ELO_TS2515) },
1085
1086         /* Flatfrog Panels */
1087         { .driver_data = MT_CLS_FLATFROG,
1088                 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1089                         USB_DEVICE_ID_MULTITOUCH_3200) },
1090
1091         /* GeneralTouch panel */
1092         { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1093                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1094                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1095         { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1096                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1097                         USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1098
1099         /* Gametel game controller */
1100         { .driver_data = MT_CLS_NSMU,
1101                 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1102                         USB_DEVICE_ID_GAMETEL_MT_MODE) },
1103
1104         /* GoodTouch panels */
1105         { .driver_data = MT_CLS_NSMU,
1106                 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1107                         USB_DEVICE_ID_GOODTOUCH_000f) },
1108
1109         /* Hanvon panels */
1110         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1111                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1112                         USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1113
1114         /* Ideacom panel */
1115         { .driver_data = MT_CLS_SERIAL,
1116                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
1117                         USB_DEVICE_ID_IDEACOM_IDC6650) },
1118         { .driver_data = MT_CLS_SERIAL,
1119                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
1120                         USB_DEVICE_ID_IDEACOM_IDC6651) },
1121
1122         /* Ilitek dual touch panel */
1123         {  .driver_data = MT_CLS_NSMU,
1124                 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1125                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1126
1127         /* IRTOUCH panels */
1128         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1129                 MT_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
1130                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
1131
1132         /* LG Display panels */
1133         { .driver_data = MT_CLS_DEFAULT,
1134                 MT_USB_DEVICE(USB_VENDOR_ID_LG,
1135                         USB_DEVICE_ID_LG_MULTITOUCH) },
1136
1137         /* Lumio panels */
1138         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1139                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
1140                         USB_DEVICE_ID_CRYSTALTOUCH) },
1141         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1142                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
1143                         USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
1144
1145         /* MosArt panels */
1146         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1147                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1148                         USB_DEVICE_ID_ASUS_T91MT)},
1149         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1150                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1151                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1152         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1153                 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1154                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1155
1156         /* Nexio panels */
1157         { .driver_data = MT_CLS_DEFAULT,
1158                 MT_USB_DEVICE(USB_VENDOR_ID_NEXIO,
1159                         USB_DEVICE_ID_NEXIO_MULTITOUCH_420)},
1160
1161         /* Panasonic panels */
1162         { .driver_data = MT_CLS_PANASONIC,
1163                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1164                         USB_DEVICE_ID_PANABOARD_UBT780) },
1165         { .driver_data = MT_CLS_PANASONIC,
1166                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1167                         USB_DEVICE_ID_PANABOARD_UBT880) },
1168
1169         /* Novatek Panel */
1170         { .driver_data = MT_CLS_NSMU,
1171                 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1172                         USB_DEVICE_ID_NOVATEK_PCT) },
1173
1174         /* PenMount panels */
1175         { .driver_data = MT_CLS_CONFIDENCE,
1176                 MT_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
1177                         USB_DEVICE_ID_PENMOUNT_PCI) },
1178
1179         /* PixArt optical touch screen */
1180         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1181                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1182                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1183         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1184                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1185                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1186         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1187                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1188                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1189
1190         /* PixCir-based panels */
1191         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1192                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON,
1193                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
1194         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1195                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1196                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1197
1198         /* Quanta-based panels */
1199         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1200                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1201                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1202         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1203                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1204                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1205         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1206                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1207                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) },
1208
1209         /* Stantum panels */
1210         { .driver_data = MT_CLS_CONFIDENCE,
1211                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM,
1212                         USB_DEVICE_ID_MTP)},
1213         { .driver_data = MT_CLS_CONFIDENCE,
1214                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1215                         USB_DEVICE_ID_MTP_STM)},
1216         { .driver_data = MT_CLS_DEFAULT,
1217                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
1218                         USB_DEVICE_ID_MTP_SITRONIX)},
1219
1220         /* TopSeed panels */
1221         { .driver_data = MT_CLS_TOPSEED,
1222                 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1223                         USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1224
1225         /* Touch International panels */
1226         { .driver_data = MT_CLS_NSMU,
1227                 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1228                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1229
1230         /* Unitec panels */
1231         { .driver_data = MT_CLS_NSMU,
1232                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1233                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1234         { .driver_data = MT_CLS_NSMU,
1235                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1236                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1237         /* XAT */
1238         { .driver_data = MT_CLS_NSMU,
1239                 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1240                         USB_DEVICE_ID_XAT_CSR) },
1241
1242         /* Xiroku */
1243         { .driver_data = MT_CLS_NSMU,
1244                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1245                         USB_DEVICE_ID_XIROKU_SPX) },
1246         { .driver_data = MT_CLS_NSMU,
1247                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1248                         USB_DEVICE_ID_XIROKU_MPX) },
1249         { .driver_data = MT_CLS_NSMU,
1250                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1251                         USB_DEVICE_ID_XIROKU_CSR) },
1252         { .driver_data = MT_CLS_NSMU,
1253                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1254                         USB_DEVICE_ID_XIROKU_SPX1) },
1255         { .driver_data = MT_CLS_NSMU,
1256                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1257                         USB_DEVICE_ID_XIROKU_MPX1) },
1258         { .driver_data = MT_CLS_NSMU,
1259                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1260                         USB_DEVICE_ID_XIROKU_CSR1) },
1261         { .driver_data = MT_CLS_NSMU,
1262                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1263                         USB_DEVICE_ID_XIROKU_SPX2) },
1264         { .driver_data = MT_CLS_NSMU,
1265                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1266                         USB_DEVICE_ID_XIROKU_MPX2) },
1267         { .driver_data = MT_CLS_NSMU,
1268                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1269                         USB_DEVICE_ID_XIROKU_CSR2) },
1270
1271         /* Zytronic panels */
1272         { .driver_data = MT_CLS_SERIAL,
1273                 MT_USB_DEVICE(USB_VENDOR_ID_ZYTRONIC,
1274                         USB_DEVICE_ID_ZYTRONIC_ZXY100) },
1275
1276         /* Generic MT device */
1277         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1278         { }
1279 };
1280 MODULE_DEVICE_TABLE(hid, mt_devices);
1281
1282 static const struct hid_usage_id mt_grabbed_usages[] = {
1283         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1284         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1285 };
1286
1287 static struct hid_driver mt_driver = {
1288         .name = "hid-multitouch",
1289         .id_table = mt_devices,
1290         .probe = mt_probe,
1291         .remove = mt_remove,
1292         .input_mapping = mt_input_mapping,
1293         .input_mapped = mt_input_mapped,
1294         .input_configured = mt_input_configured,
1295         .feature_mapping = mt_feature_mapping,
1296         .usage_table = mt_grabbed_usages,
1297         .event = mt_event,
1298         .report = mt_report,
1299 #ifdef CONFIG_PM
1300         .reset_resume = mt_reset_resume,
1301         .resume = mt_resume,
1302 #endif
1303 };
1304 module_hid_driver(mt_driver);