LXR linux/drivers/hid/hid-core.c

   1/*
   2 *  HID support for Linux
   3 *
   4 *  Copyright (c) 1999 Andreas Gal
   5 *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
   6 *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
   7 *  Copyright (c) 2006-2012 Jiri Kosina
   8 */
   9
  10/*
  11 * This program is free software; you can redistribute it and/or modify it
  12 * under the terms of the GNU General Public License as published by the Free
  13 * Software Foundation; either version 2 of the License, or (at your option)
  14 * any later version.
  15 */
  16
  17#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  18
  19#include <linux/module.h>
  20#include <linux/slab.h>
  21#include <linux/init.h>
  22#include <linux/kernel.h>
  23#include <linux/list.h>
  24#include <linux/mm.h>
  25#include <linux/spinlock.h>
  26#include <asm/unaligned.h>
  27#include <asm/byteorder.h>
  28#include <linux/input.h>
  29#include <linux/wait.h>
  30#include <linux/vmalloc.h>
  31#include <linux/sched.h>
  32#include <linux/semaphore.h>
  33
  34#include <linux/hid.h>
  35#include <linux/hiddev.h>
  36#include <linux/hid-debug.h>
  37#include <linux/hidraw.h>
  38
  39#include "hid-ids.h"
  40
  41/*
  42 * Version Information
  43 */
  44
  45#define DRIVER_DESC "HID core driver"
  46#define DRIVER_LICENSE "GPL"
  47
  48int hid_debug = 0;
  49module_param_named(debug, hid_debug, int, 0600);
  50MODULE_PARM_DESC(debug, "toggle HID debugging messages");
  51EXPORT_SYMBOL_GPL(hid_debug);
  52
  53static int hid_ignore_special_drivers = 0;
  54module_param_named(ignore_special_drivers, hid_ignore_special_drivers, int, 0600);
  55MODULE_PARM_DESC(ignore_special_drivers, "Ignore any special drivers and handle all devices by generic driver");
  56
  57/*
  58 * Register a new report for a device.
  59 */
  60
  61struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
  62{
  63        struct hid_report_enum *report_enum = device->report_enum + type;
  64        struct hid_report *report;
  65
  66        if (id >= HID_MAX_IDS)
  67                return NULL;
  68        if (report_enum->report_id_hash[id])
  69                return report_enum->report_id_hash[id];
  70
  71        report = kzalloc(sizeof(struct hid_report), GFP_KERNEL);
  72        if (!report)
  73                return NULL;
  74
  75        if (id != 0)
  76                report_enum->numbered = 1;
  77
  78        report->id = id;
  79        report->type = type;
  80        report->size = 0;
  81        report->device = device;
  82        report_enum->report_id_hash[id] = report;
  83
  84        list_add_tail(&report->list, &report_enum->report_list);
  85
  86        return report;
  87}
  88EXPORT_SYMBOL_GPL(hid_register_report);
  89
  90/*
  91 * Register a new field for this report.
  92 */
  93
  94static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
  95{
  96        struct hid_field *field;
  97
  98        if (report->maxfield == HID_MAX_FIELDS) {
  99                hid_err(report->device, "too many fields in report\n");
 100                return NULL;
 101        }
 102
 103        field = kzalloc((sizeof(struct hid_field) +
 104                         usages * sizeof(struct hid_usage) +
 105                         values * sizeof(unsigned)), GFP_KERNEL);
 106        if (!field)
 107                return NULL;
 108
 109        field->index = report->maxfield++;
 110        report->field[field->index] = field;
 111        field->usage = (struct hid_usage *)(field + 1);
 112        field->value = (s32 *)(field->usage + usages);
 113        field->report = report;
 114
 115        return field;
 116}
 117
 118/*
 119 * Open a collection. The type/usage is pushed on the stack.
 120 */
 121
 122static int open_collection(struct hid_parser *parser, unsigned type)
 123{
 124        struct hid_collection *collection;
 125        unsigned usage;
 126
 127        usage = parser->local.usage[0];
 128
 129        if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
 130                hid_err(parser->device, "collection stack overflow\n");
 131                return -EINVAL;
 132        }
 133
 134        if (parser->device->maxcollection == parser->device->collection_size) {
 135                collection = kmalloc(sizeof(struct hid_collection) *
 136                                parser->device->collection_size * 2, GFP_KERNEL);
 137                if (collection == NULL) {
 138                        hid_err(parser->device, "failed to reallocate collection array\n");
 139                        return -ENOMEM;
 140                }
 141                memcpy(collection, parser->device->collection,
 142                        sizeof(struct hid_collection) *
 143                        parser->device->collection_size);
 144                memset(collection + parser->device->collection_size, 0,
 145                        sizeof(struct hid_collection) *
 146                        parser->device->collection_size);
 147                kfree(parser->device->collection);
 148                parser->device->collection = collection;
 149                parser->device->collection_size *= 2;
 150        }
 151
 152        parser->collection_stack[parser->collection_stack_ptr++] =
 153                parser->device->maxcollection;
 154
 155        collection = parser->device->collection +
 156                parser->device->maxcollection++;
 157        collection->type = type;
 158        collection->usage = usage;
 159        collection->level = parser->collection_stack_ptr - 1;
 160
 161        if (type == HID_COLLECTION_APPLICATION)
 162                parser->device->maxapplication++;
 163
 164        return 0;
 165}
 166
 167/*
 168 * Close a collection.
 169 */
 170
 171static int close_collection(struct hid_parser *parser)
 172{
 173        if (!parser->collection_stack_ptr) {
 174                hid_err(parser->device, "collection stack underflow\n");
 175                return -EINVAL;
 176        }
 177        parser->collection_stack_ptr--;
 178        return 0;
 179}
 180
 181/*
 182 * Climb up the stack, search for the specified collection type
 183 * and return the usage.
 184 */
 185
 186static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
 187{
 188        struct hid_collection *collection = parser->device->collection;
 189        int n;
 190
 191        for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
 192                unsigned index = parser->collection_stack[n];
 193                if (collection[index].type == type)
 194                        return collection[index].usage;
 195        }
 196        return 0; /* we know nothing about this usage type */
 197}
 198
 199/*
 200 * Add a usage to the temporary parser table.
 201 */
 202
 203static int hid_add_usage(struct hid_parser *parser, unsigned usage)
 204{
 205        if (parser->local.usage_index >= HID_MAX_USAGES) {
 206                hid_err(parser->device, "usage index exceeded\n");
 207                return -1;
 208        }
 209        parser->local.usage[parser->local.usage_index] = usage;
 210        parser->local.collection_index[parser->local.usage_index] =
 211                parser->collection_stack_ptr ?
 212                parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
 213        parser->local.usage_index++;
 214        return 0;
 215}
 216
 217/*
 218 * Register a new field for this report.
 219 */
 220
 221static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
 222{
 223        struct hid_report *report;
 224        struct hid_field *field;
 225        unsigned usages;
 226        unsigned offset;
 227        unsigned i;
 228
 229        report = hid_register_report(parser->device, report_type, parser->global.report_id);
 230        if (!report) {
 231                hid_err(parser->device, "hid_register_report failed\n");
 232                return -1;
 233        }
 234
 235        /* Handle both signed and unsigned cases properly */
 236        if ((parser->global.logical_minimum < 0 &&
 237                parser->global.logical_maximum <
 238                parser->global.logical_minimum) ||
 239                (parser->global.logical_minimum >= 0 &&
 240                (__u32)parser->global.logical_maximum <
 241                (__u32)parser->global.logical_minimum)) {
 242                dbg_hid("logical range invalid 0x%x 0x%x\n",
 243                        parser->global.logical_minimum,
 244                        parser->global.logical_maximum);
 245                return -1;
 246        }
 247
 248        offset = report->size;
 249        report->size += parser->global.report_size * parser->global.report_count;
 250
 251        if (!parser->local.usage_index) /* Ignore padding fields */
 252                return 0;
 253
 254        usages = max_t(unsigned, parser->local.usage_index,
 255                                 parser->global.report_count);
 256
 257        field = hid_register_field(report, usages, parser->global.report_count);
 258        if (!field)
 259                return 0;
 260
 261        field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
 262        field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
 263        field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
 264
 265        for (i = 0; i < usages; i++) {
 266                unsigned j = i;
 267                /* Duplicate the last usage we parsed if we have excess values */
 268                if (i >= parser->local.usage_index)
 269                        j = parser->local.usage_index - 1;
 270                field->usage[i].hid = parser->local.usage[j];
 271                field->usage[i].collection_index =
 272                        parser->local.collection_index[j];
 273                field->usage[i].usage_index = i;
 274        }
 275
 276        field->maxusage = usages;
 277        field->flags = flags;
 278        field->report_offset = offset;
 279        field->report_type = report_type;
 280        field->report_size = parser->global.report_size;
 281        field->report_count = parser->global.report_count;
 282        field->logical_minimum = parser->global.logical_minimum;
 283        field->logical_maximum = parser->global.logical_maximum;
 284        field->physical_minimum = parser->global.physical_minimum;
 285        field->physical_maximum = parser->global.physical_maximum;
 286        field->unit_exponent = parser->global.unit_exponent;
 287        field->unit = parser->global.unit;
 288
 289        return 0;
 290}
 291
 292/*
 293 * Read data value from item.
 294 */
 295
 296static u32 item_udata(struct hid_item *item)
 297{
 298        switch (item->size) {
 299        case 1: return item->data.u8;
 300        case 2: return item->data.u16;
 301        case 4: return item->data.u32;
 302        }
 303        return 0;
 304}
 305
 306static s32 item_sdata(struct hid_item *item)
 307{
 308        switch (item->size) {
 309        case 1: return item->data.s8;
 310        case 2: return item->data.s16;
 311        case 4: return item->data.s32;
 312        }
 313        return 0;
 314}
 315
 316/*
 317 * Process a global item.
 318 */
 319
 320static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
 321{
 322        __s32 raw_value;
 323        switch (item->tag) {
 324        case HID_GLOBAL_ITEM_TAG_PUSH:
 325
 326                if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
 327                        hid_err(parser->device, "global environment stack overflow\n");
 328                        return -1;
 329                }
 330
 331                memcpy(parser->global_stack + parser->global_stack_ptr++,
 332                        &parser->global, sizeof(struct hid_global));
 333                return 0;
 334
 335        case HID_GLOBAL_ITEM_TAG_POP:
 336
 337                if (!parser->global_stack_ptr) {
 338                        hid_err(parser->device, "global environment stack underflow\n");
 339                        return -1;
 340                }
 341
 342                memcpy(&parser->global, parser->global_stack +
 343                        --parser->global_stack_ptr, sizeof(struct hid_global));
 344                return 0;
 345
 346        case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
 347                parser->global.usage_page = item_udata(item);
 348                return 0;
 349
 350        case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
 351                parser->global.logical_minimum = item_sdata(item);
 352                return 0;
 353
 354        case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
 355                if (parser->global.logical_minimum < 0)
 356                        parser->global.logical_maximum = item_sdata(item);
 357                else
 358                        parser->global.logical_maximum = item_udata(item);
 359                return 0;
 360
 361        case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
 362                parser->global.physical_minimum = item_sdata(item);
 363                return 0;
 364
 365        case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
 366                if (parser->global.physical_minimum < 0)
 367                        parser->global.physical_maximum = item_sdata(item);
 368                else
 369                        parser->global.physical_maximum = item_udata(item);
 370                return 0;
 371
 372        case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
 373                /* Many devices provide unit exponent as a two's complement
 374                 * nibble due to the common misunderstanding of HID
 375                 * specification 1.11, 6.2.2.7 Global Items. Attempt to handle
 376                 * both this and the standard encoding. */
 377                raw_value = item_sdata(item);
 378                if (!(raw_value & 0xfffffff0))
 379                        parser->global.unit_exponent = hid_snto32(raw_value, 4);
 380                else
 381                        parser->global.unit_exponent = raw_value;
 382                return 0;
 383
 384        case HID_GLOBAL_ITEM_TAG_UNIT:
 385                parser->global.unit = item_udata(item);
 386                return 0;
 387
 388        case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
 389                parser->global.report_size = item_udata(item);
 390                if (parser->global.report_size > 128) {
 391                        hid_err(parser->device, "invalid report_size %d\n",
 392                                        parser->global.report_size);
 393                        return -1;
 394                }
 395                return 0;
 396
 397        case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
 398                parser->global.report_count = item_udata(item);
 399                if (parser->global.report_count > HID_MAX_USAGES) {
 400                        hid_err(parser->device, "invalid report_count %d\n",
 401                                        parser->global.report_count);
 402                        return -1;
 403                }
 404                return 0;
 405
 406        case HID_GLOBAL_ITEM_TAG_REPORT_ID:
 407                parser->global.report_id = item_udata(item);
 408                if (parser->global.report_id == 0 ||
 409                    parser->global.report_id >= HID_MAX_IDS) {
 410                        hid_err(parser->device, "report_id %u is invalid\n",
 411                                parser->global.report_id);
 412                        return -1;
 413                }
 414                return 0;
 415
 416        default:
 417                hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
 418                return -1;
 419        }
 420}
 421
 422/*
 423 * Process a local item.
 424 */
 425
 426static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 427{
 428        __u32 data;
 429        unsigned n;
 430
 431        data = item_udata(item);
 432
 433        switch (item->tag) {
 434        case HID_LOCAL_ITEM_TAG_DELIMITER:
 435
 436                if (data) {
 437                        /*
 438                         * We treat items before the first delimiter
 439                         * as global to all usage sets (branch 0).
 440                         * In the moment we process only these global
 441                         * items and the first delimiter set.
 442                         */
 443                        if (parser->local.delimiter_depth != 0) {
 444                                hid_err(parser->device, "nested delimiters\n");
 445                                return -1;
 446                        }
 447                        parser->local.delimiter_depth++;
 448                        parser->local.delimiter_branch++;
 449                } else {
 450                        if (parser->local.delimiter_depth < 1) {
 451                                hid_err(parser->device, "bogus close delimiter\n");
 452                                return -1;
 453                        }
 454                        parser->local.delimiter_depth--;
 455                }
 456                return 0;
 457
 458        case HID_LOCAL_ITEM_TAG_USAGE:
 459
 460                if (parser->local.delimiter_branch > 1) {
 461                        dbg_hid("alternative usage ignored\n");
 462                        return 0;
 463                }
 464
 465                if (item->size <= 2)
 466                        data = (parser->global.usage_page << 16) + data;
 467
 468                return hid_add_usage(parser, data);
 469
 470        case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 471
 472                if (parser->local.delimiter_branch > 1) {
 473                        dbg_hid("alternative usage ignored\n");
 474                        return 0;
 475                }
 476
 477                if (item->size <= 2)
 478                        data = (parser->global.usage_page << 16) + data;
 479
 480                parser->local.usage_minimum = data;
 481                return 0;
 482
 483        case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 484
 485                if (parser->local.delimiter_branch > 1) {
 486                        dbg_hid("alternative usage ignored\n");
 487                        return 0;
 488                }
 489
 490                if (item->size <= 2)
 491                        data = (parser->global.usage_page << 16) + data;
 492
 493                for (n = parser->local.usage_minimum; n <= data; n++)
 494                        if (hid_add_usage(parser, n)) {
 495                                dbg_hid("hid_add_usage failed\n");
 496                                return -1;
 497                        }
 498                return 0;
 499
 500        default:
 501
 502                dbg_hid("unknown local item tag 0x%x\n", item->tag);
 503                return 0;
 504        }
 505        return 0;
 506}
 507
 508/*
 509 * Process a main item.
 510 */
 511
 512static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
 513{
 514        __u32 data;
 515        int ret;
 516
 517        data = item_udata(item);
 518
 519        switch (item->tag) {
 520        case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 521                ret = open_collection(parser, data & 0xff);
 522                break;
 523        case HID_MAIN_ITEM_TAG_END_COLLECTION:
 524                ret = close_collection(parser);
 525                break;
 526        case HID_MAIN_ITEM_TAG_INPUT:
 527                ret = hid_add_field(parser, HID_INPUT_REPORT, data);
 528                break;
 529        case HID_MAIN_ITEM_TAG_OUTPUT:
 530                ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
 531                break;
 532        case HID_MAIN_ITEM_TAG_FEATURE:
 533                ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
 534                break;
 535        default:
 536                hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
 537                ret = 0;
 538        }
 539
 540        memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
 541
 542        return ret;
 543}
 544
 545/*
 546 * Process a reserved item.
 547 */
 548
 549static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
 550{
 551        dbg_hid("reserved item type, tag 0x%x\n", item->tag);
 552        return 0;
 553}
 554
 555/*
 556 * Free a report and all registered fields. The field->usage and
 557 * field->value table's are allocated behind the field, so we need
 558 * only to free(field) itself.
 559 */
 560
 561static void hid_free_report(struct hid_report *report)
 562{
 563        unsigned n;
 564
 565        for (n = 0; n < report->maxfield; n++)
 566                kfree(report->field[n]);
 567        kfree(report);
 568}
 569
 570/*
 571 * Close report. This function returns the device
 572 * state to the point prior to hid_open_report().
 573 */
 574static void hid_close_report(struct hid_device *device)
 575{
 576        unsigned i, j;
 577
 578        for (i = 0; i < HID_REPORT_TYPES; i++) {
 579                struct hid_report_enum *report_enum = device->report_enum + i;
 580
 581                for (j = 0; j < HID_MAX_IDS; j++) {
 582                        struct hid_report *report = report_enum->report_id_hash[j];
 583                        if (report)
 584                                hid_free_report(report);
 585                }
 586                memset(report_enum, 0, sizeof(*report_enum));
 587                INIT_LIST_HEAD(&report_enum->report_list);
 588        }
 589
 590        kfree(device->rdesc);
 591        device->rdesc = NULL;
 592        device->rsize = 0;
 593
 594        kfree(device->collection);
 595        device->collection = NULL;
 596        device->collection_size = 0;
 597        device->maxcollection = 0;
 598        device->maxapplication = 0;
 599
 600        device->status &= ~HID_STAT_PARSED;
 601}
 602
 603/*
 604 * Free a device structure, all reports, and all fields.
 605 */
 606
 607static void hid_device_release(struct device *dev)
 608{
 609        struct hid_device *hid = container_of(dev, struct hid_device, dev);
 610
 611        hid_close_report(hid);
 612        kfree(hid->dev_rdesc);
 613        kfree(hid);
 614}
 615
 616/*
 617 * Fetch a report description item from the data stream. We support long
 618 * items, though they are not used yet.
 619 */
 620
 621static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
 622{
 623        u8 b;
 624
 625        if ((end - start) <= 0)
 626                return NULL;
 627
 628        b = *start++;
 629
 630        item->type = (b >> 2) & 3;
 631        item->tag  = (b >> 4) & 15;
 632
 633        if (item->tag == HID_ITEM_TAG_LONG) {
 634
 635                item->format = HID_ITEM_FORMAT_LONG;
 636
 637                if ((end - start) < 2)
 638                        return NULL;
 639
 640                item->size = *start++;
 641                item->tag  = *start++;
 642
 643                if ((end - start) < item->size)
 644                        return NULL;
 645
 646                item->data.longdata = start;
 647                start += item->size;
 648                return start;
 649        }
 650
 651        item->format = HID_ITEM_FORMAT_SHORT;
 652        item->size = b & 3;
 653
 654        switch (item->size) {
 655        case 0:
 656                return start;
 657
 658        case 1:
 659                if ((end - start) < 1)
 660                        return NULL;
 661                item->data.u8 = *start++;
 662                return start;
 663
 664        case 2:
 665                if ((end - start) < 2)
 666                        return NULL;
 667                item->data.u16 = get_unaligned_le16(start);
 668                start = (__u8 *)((__le16 *)start + 1);
 669                return start;
 670
 671        case 3:
 672                item->size++;
 673                if ((end - start) < 4)
 674                        return NULL;
 675                item->data.u32 = get_unaligned_le32(start);
 676                start = (__u8 *)((__le32 *)start + 1);
 677                return start;
 678        }
 679
 680        return NULL;
 681}
 682
 683static void hid_scan_input_usage(struct hid_parser *parser, u32 usage)
 684{
 685        struct hid_device *hid = parser->device;
 686
 687        if (usage == HID_DG_CONTACTID)
 688                hid->group = HID_GROUP_MULTITOUCH;
 689}
 690
 691static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage)
 692{
 693        if (usage == 0xff0000c5 && parser->global.report_count == 256 &&
 694            parser->global.report_size == 8)
 695                parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;
 696}
 697
 698static void hid_scan_collection(struct hid_parser *parser, unsigned type)
 699{
 700        struct hid_device *hid = parser->device;
 701
 702        if (((parser->global.usage_page << 16) == HID_UP_SENSOR) &&
 703            type == HID_COLLECTION_PHYSICAL)
 704                hid->group = HID_GROUP_SENSOR_HUB;
 705}
 706
 707static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)
 708{
 709        __u32 data;
 710        int i;
 711
 712        data = item_udata(item);
 713
 714        switch (item->tag) {
 715        case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 716                hid_scan_collection(parser, data & 0xff);
 717                break;
 718        case HID_MAIN_ITEM_TAG_END_COLLECTION:
 719                break;
 720        case HID_MAIN_ITEM_TAG_INPUT:
 721                /* ignore constant inputs, they will be ignored by hid-input */
 722                if (data & HID_MAIN_ITEM_CONSTANT)
 723                        break;
 724                for (i = 0; i < parser->local.usage_index; i++)
 725                        hid_scan_input_usage(parser, parser->local.usage[i]);
 726                break;
 727        case HID_MAIN_ITEM_TAG_OUTPUT:
 728                break;
 729        case HID_MAIN_ITEM_TAG_FEATURE:
 730                for (i = 0; i < parser->local.usage_index; i++)
 731                        hid_scan_feature_usage(parser, parser->local.usage[i]);
 732                break;
 733        }
 734
 735        /* Reset the local parser environment */
 736        memset(&parser->local, 0, sizeof(parser->local));
 737
 738        return 0;
 739}
 740
 741/*
 742 * Scan a report descriptor before the device is added to the bus.
 743 * Sets device groups and other properties that determine what driver
 744 * to load.
 745 */
 746static int hid_scan_report(struct hid_device *hid)
 747{
 748        struct hid_parser *parser;
 749        struct hid_item item;
 750        __u8 *start = hid->dev_rdesc;
 751        __u8 *end = start + hid->dev_rsize;
 752        static int (*dispatch_type[])(struct hid_parser *parser,
 753                                      struct hid_item *item) = {
 754                hid_scan_main,
 755                hid_parser_global,
 756                hid_parser_local,
 757                hid_parser_reserved
 758        };
 759
 760        parser = vzalloc(sizeof(struct hid_parser));
 761        if (!parser)
 762                return -ENOMEM;
 763
 764        parser->device = hid;
 765        hid->group = HID_GROUP_GENERIC;
 766
 767        /*
 768         * The parsing is simpler than the one in hid_open_report() as we should
 769         * be robust against hid errors. Those errors will be raised by
 770         * hid_open_report() anyway.
 771         */
 772        while ((start = fetch_item(start, end, &item)) != NULL)
 773                dispatch_type[item.type](parser, &item);
 774
 775        /*
 776         * Handle special flags set during scanning.
 777         */
 778        if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) &&
 779            (hid->group == HID_GROUP_MULTITOUCH))
 780                hid->group = HID_GROUP_MULTITOUCH_WIN_8;
 781
 782        /*
 783        * Vendor specific handlings
 784        */
 785        if ((hid->vendor == USB_VENDOR_ID_SYNAPTICS) &&
 786            (hid->group == HID_GROUP_GENERIC) &&
 787            /* only bind to the mouse interface of composite USB devices */
 788            (hid->bus != BUS_USB || hid->type == HID_TYPE_USBMOUSE))
 789                /* hid-rmi should take care of them, not hid-generic */
 790                hid->group = HID_GROUP_RMI;
 791
 792        /*
 793         * Vendor specific handlings
 794         */
 795        switch (hid->vendor) {
 796        case USB_VENDOR_ID_WACOM:
 797                hid->group = HID_GROUP_WACOM;
 798                break;
 799        }
 800
 801        vfree(parser);
 802        return 0;
 803}
 804
 805/**
 806 * hid_parse_report - parse device report
 807 *
 808 * @device: hid device
 809 * @start: report start
 810 * @size: report size
 811 *
 812 * Allocate the device report as read by the bus driver. This function should
 813 * only be called from parse() in ll drivers.
 814 */
 815int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
 816{
 817        hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
 818        if (!hid->dev_rdesc)
 819                return -ENOMEM;
 820        hid->dev_rsize = size;
 821        return 0;
 822}
 823EXPORT_SYMBOL_GPL(hid_parse_report);
 824
 825static const char * const hid_report_names[] = {
 826        "HID_INPUT_REPORT",
 827        "HID_OUTPUT_REPORT",
 828        "HID_FEATURE_REPORT",
 829};
 830/**
 831 * hid_validate_values - validate existing device report's value indexes
 832 *
 833 * @device: hid device
 834 * @type: which report type to examine
 835 * @id: which report ID to examine (0 for first)
 836 * @field_index: which report field to examine
 837 * @report_counts: expected number of values
 838 *
 839 * Validate the number of values in a given field of a given report, after
 840 * parsing.
 841 */
 842struct hid_report *hid_validate_values(struct hid_device *hid,
 843                                       unsigned int type, unsigned int id,
 844                                       unsigned int field_index,
 845                                       unsigned int report_counts)
 846{
 847        struct hid_report *report;
 848
 849        if (type > HID_FEATURE_REPORT) {
 850                hid_err(hid, "invalid HID report type %u\n", type);
 851                return NULL;
 852        }
 853
 854        if (id >= HID_MAX_IDS) {
 855                hid_err(hid, "invalid HID report id %u\n", id);
 856                return NULL;
 857        }
 858
 859        /*
 860         * Explicitly not using hid_get_report() here since it depends on
 861         * ->numbered being checked, which may not always be the case when
 862         * drivers go to access report values.
 863         */
 864        if (id == 0) {
 865                /*
 866                 * Validating on id 0 means we should examine the first
 867                 * report in the list.
 868                 */
 869                report = list_entry(
 870                                hid->report_enum[type].report_list.next,
 871                                struct hid_report, list);
 872        } else {
 873                report = hid->report_enum[type].report_id_hash[id];
 874        }
 875        if (!report) {
 876                hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
 877                return NULL;
 878        }
 879        if (report->maxfield <= field_index) {
 880                hid_err(hid, "not enough fields in %s %u\n",
 881                        hid_report_names[type], id);
 882                return NULL;
 883        }
 884        if (report->field[field_index]->report_count < report_counts) {
 885                hid_err(hid, "not enough values in %s %u field %u\n",
 886                        hid_report_names[type], id, field_index);
 887                return NULL;
 888        }
 889        return report;
 890}
 891EXPORT_SYMBOL_GPL(hid_validate_values);
 892
 893/**
 894 * hid_open_report - open a driver-specific device report
 895 *
 896 * @device: hid device
 897 *
 898 * Parse a report description into a hid_device structure. Reports are
 899 * enumerated, fields are attached to these reports.
 900 * 0 returned on success, otherwise nonzero error value.
 901 *
 902 * This function (or the equivalent hid_parse() macro) should only be
 903 * called from probe() in drivers, before starting the device.
 904 */
 905int hid_open_report(struct hid_device *device)
 906{
 907        struct hid_parser *parser;
 908        struct hid_item item;
 909        unsigned int size;
 910        __u8 *start;
 911        __u8 *buf;
 912        __u8 *end;
 913        int ret;
 914        static int (*dispatch_type[])(struct hid_parser *parser,
 915                                      struct hid_item *item) = {
 916                hid_parser_main,
 917                hid_parser_global,
 918                hid_parser_local,
 919                hid_parser_reserved
 920        };
 921
 922        if (WARN_ON(device->status & HID_STAT_PARSED))
 923                return -EBUSY;
 924
 925        start = device->dev_rdesc;
 926        if (WARN_ON(!start))
 927                return -ENODEV;
 928        size = device->dev_rsize;
 929
 930        buf = kmemdup(start, size, GFP_KERNEL);
 931        if (buf == NULL)
 932                return -ENOMEM;
 933
 934        if (device->driver->report_fixup)
 935                start = device->driver->report_fixup(device, buf, &size);
 936        else
 937                start = buf;
 938
 939        start = kmemdup(start, size, GFP_KERNEL);
 940        kfree(buf);
 941        if (start == NULL)
 942                return -ENOMEM;
 943
 944        device->rdesc = start;
 945        device->rsize = size;
 946
 947        parser = vzalloc(sizeof(struct hid_parser));
 948        if (!parser) {
 949                ret = -ENOMEM;
 950                goto err;
 951        }
 952
 953        parser->device = device;
 954
 955        end = start + size;
 956
 957        device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
 958                                     sizeof(struct hid_collection), GFP_KERNEL);
 959        if (!device->collection) {
 960                ret = -ENOMEM;
 961                goto err;
 962        }
 963        device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
 964
 965        ret = -EINVAL;
 966        while ((start = fetch_item(start, end, &item)) != NULL) {
 967
 968                if (item.format != HID_ITEM_FORMAT_SHORT) {
 969                        hid_err(device, "unexpected long global item\n");
 970                        goto err;
 971                }
 972
 973                if (dispatch_type[item.type](parser, &item)) {
 974                        hid_err(device, "item %u %u %u %u parsing failed\n",
 975                                item.format, (unsigned)item.size,
 976                                (unsigned)item.type, (unsigned)item.tag);
 977                        goto err;
 978                }
 979
 980                if (start == end) {
 981                        if (parser->collection_stack_ptr) {
 982                                hid_err(device, "unbalanced collection at end of report description\n");
 983                                goto err;
 984                        }
 985                        if (parser->local.delimiter_depth) {
 986                                hid_err(device, "unbalanced delimiter at end of report description\n");
 987                                goto err;
 988                        }
 989                        vfree(parser);
 990                        device->status |= HID_STAT_PARSED;
 991                        return 0;
 992                }
 993        }
 994
 995        hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
 996err:
 997        vfree(parser);
 998        hid_close_report(device);
 999        return ret;
1000}

1001EXPORT_SYMBOL_GPL(hid_open_report);
1002
1003/*
1004 * Convert a signed n-bit integer to signed 32-bit integer. Common
1005 * cases are done through the compiler, the screwed things has to be
1006 * done by hand.
1007 */
1008
1009static s32 snto32(__u32 value, unsigned n)
1010{
1011        switch (n) {
1012        case 8:  return ((__s8)value);
1013        case 16: return ((__s16)value);
1014        case 32: return ((__s32)value);
1015        }
1016        return value & (1 << (n - 1)) ? value | (-1 << n) : value;
1017}
1018
1019s32 hid_snto32(__u32 value, unsigned n)
1020{
1021        return snto32(value, n);
1022}
1023EXPORT_SYMBOL_GPL(hid_snto32);
1024
1025/*
1026 * Convert a signed 32-bit integer to a signed n-bit integer.
1027 */
1028
1029static u32 s32ton(__s32 value, unsigned n)
1030{
1031        s32 a = value >> (n - 1);
1032        if (a && a != -1)
1033                return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
1034        return value & ((1 << n) - 1);
1035}
1036
1037/*
1038 * Extract/implement a data field from/to a little endian report (bit array).
1039 *
1040 * Code sort-of follows HID spec:
1041 *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
1042 *
1043 * While the USB HID spec allows unlimited length bit fields in "report
1044 * descriptors", most devices never use more than 16 bits.
1045 * One model of UPS is claimed to report "LINEV" as a 32-bit field.
1046 * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
1047 */
1048
1049static __u32 extract(const struct hid_device *hid, __u8 *report,
1050                     unsigned offset, unsigned n)
1051{
1052        u64 x;
1053
1054        if (n > 32)
1055                hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
1056                         n, current->comm);
1057
1058        report += offset >> 3;  /* adjust byte index */
1059        offset &= 7;            /* now only need bit offset into one byte */
1060        x = get_unaligned_le64(report);
1061        x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
1062        return (u32) x;
1063}
1064
1065/*
1066 * "implement" : set bits in a little endian bit stream.
1067 * Same concepts as "extract" (see comments above).
1068 * The data mangled in the bit stream remains in little endian
1069 * order the whole time. It make more sense to talk about
1070 * endianness of register values by considering a register
1071 * a "cached" copy of the little endiad bit stream.
1072 */
1073static void implement(const struct hid_device *hid, __u8 *report,
1074                      unsigned offset, unsigned n, __u32 value)
1075{
1076        u64 x;
1077        u64 m = (1ULL << n) - 1;
1078
1079        if (n > 32)
1080                hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
1081                         __func__, n, current->comm);
1082
1083        if (value > m)
1084                hid_warn(hid, "%s() called with too large value %d! (%s)\n",
1085                         __func__, value, current->comm);
1086        WARN_ON(value > m);
1087        value &= m;
1088
1089        report += offset >> 3;
1090        offset &= 7;
1091
1092        x = get_unaligned_le64(report);
1093        x &= ~(m << offset);
1094        x |= ((u64)value) << offset;
1095        put_unaligned_le64(x, report);
1096}
1097
1098/*
1099 * Search an array for a value.
1100 */
1101
1102static int search(__s32 *array, __s32 value, unsigned n)
1103{
1104        while (n--) {
1105                if (*array++ == value)
1106                        return 0;
1107        }
1108        return -1;
1109}
1110
1111/**
1112 * hid_match_report - check if driver's raw_event should be called
1113 *
1114 * @hid: hid device
1115 * @report_type: type to match against
1116 *
1117 * compare hid->driver->report_table->report_type to report->type
1118 */
1119static int hid_match_report(struct hid_device *hid, struct hid_report *report)
1120{
1121        const struct hid_report_id *id = hid->driver->report_table;
1122
1123        if (!id) /* NULL means all */
1124                return 1;
1125
1126        for (; id->report_type != HID_TERMINATOR; id++)
1127                if (id->report_type == HID_ANY_ID ||
1128                                id->report_type == report->type)
1129                        return 1;
1130        return 0;
1131}
1132
1133/**
1134 * hid_match_usage - check if driver's event should be called
1135 *
1136 * @hid: hid device
1137 * @usage: usage to match against
1138 *
1139 * compare hid->driver->usage_table->usage_{type,code} to
1140 * usage->usage_{type,code}
1141 */
1142static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1143{
1144        const struct hid_usage_id *id = hid->driver->usage_table;
1145
1146        if (!id) /* NULL means all */
1147                return 1;
1148
1149        for (; id->usage_type != HID_ANY_ID - 1; id++)
1150                if ((id->usage_hid == HID_ANY_ID ||
1151                                id->usage_hid == usage->hid) &&
1152                                (id->usage_type == HID_ANY_ID ||
1153                                id->usage_type == usage->type) &&
1154                                (id->usage_code == HID_ANY_ID ||
1155                                 id->usage_code == usage->code))
1156                        return 1;
1157        return 0;
1158}
1159
1160static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1161                struct hid_usage *usage, __s32 value, int interrupt)
1162{
1163        struct hid_driver *hdrv = hid->driver;
1164        int ret;
1165
1166        if (!list_empty(&hid->debug_list))
1167                hid_dump_input(hid, usage, value);
1168
1169        if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1170                ret = hdrv->event(hid, field, usage, value);
1171                if (ret != 0) {
1172                        if (ret < 0)
1173                                hid_err(hid, "%s's event failed with %d\n",
1174                                                hdrv->name, ret);
1175                        return;
1176                }
1177        }
1178
1179        if (hid->claimed & HID_CLAIMED_INPUT)
1180                hidinput_hid_event(hid, field, usage, value);
1181        if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1182                hid->hiddev_hid_event(hid, field, usage, value);
1183}
1184
1185/*
1186 * Analyse a received field, and fetch the data from it. The field
1187 * content is stored for next report processing (we do differential
1188 * reporting to the layer).
1189 */
1190
1191static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1192                            __u8 *data, int interrupt)
1193{
1194        unsigned n;
1195        unsigned count = field->report_count;
1196        unsigned offset = field->report_offset;
1197        unsigned size = field->report_size;
1198        __s32 min = field->logical_minimum;
1199        __s32 max = field->logical_maximum;
1200        __s32 *value;
1201
1202        value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1203        if (!value)
1204                return;
1205
1206        for (n = 0; n < count; n++) {
1207
1208                value[n] = min < 0 ?
1209                        snto32(extract(hid, data, offset + n * size, size),
1210                               size) :
1211                        extract(hid, data, offset + n * size, size);
1212
1213                /* Ignore report if ErrorRollOver */
1214                if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1215                    value[n] >= min && value[n] <= max &&
1216                    field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1217                        goto exit;
1218        }
1219
1220        for (n = 0; n < count; n++) {
1221
1222                if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1223                        hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1224                        continue;
1225                }
1226
1227                if (field->value[n] >= min && field->value[n] <= max
1228                        && field->usage[field->value[n] - min].hid
1229                        && search(value, field->value[n], count))
1230                                hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1231
1232                if (value[n] >= min && value[n] <= max
1233                        && field->usage[value[n] - min].hid
1234                        && search(field->value, value[n], count))
1235                                hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1236        }
1237
1238        memcpy(field->value, value, count * sizeof(__s32));
1239exit:
1240        kfree(value);
1241}
1242
1243/*
1244 * Output the field into the report.
1245 */
1246
1247static void hid_output_field(const struct hid_device *hid,
1248                             struct hid_field *field, __u8 *data)
1249{
1250        unsigned count = field->report_count;
1251        unsigned offset = field->report_offset;
1252        unsigned size = field->report_size;
1253        unsigned n;
1254
1255        for (n = 0; n < count; n++) {
1256                if (field->logical_minimum < 0) /* signed values */
1257                        implement(hid, data, offset + n * size, size,
1258                                  s32ton(field->value[n], size));
1259                else                            /* unsigned values */
1260                        implement(hid, data, offset + n * size, size,
1261                                  field->value[n]);
1262        }
1263}
1264
1265/*
1266 * Create a report. 'data' has to be allocated using
1267 * hid_alloc_report_buf() so that it has proper size.
1268 */
1269
1270void hid_output_report(struct hid_report *report, __u8 *data)
1271{
1272        unsigned n;
1273
1274        if (report->id > 0)
1275                *data++ = report->id;
1276
1277        memset(data, 0, ((report->size - 1) >> 3) + 1);
1278        for (n = 0; n < report->maxfield; n++)
1279                hid_output_field(report->device, report->field[n], data);
1280}
1281EXPORT_SYMBOL_GPL(hid_output_report);
1282
1283static int hid_report_len(struct hid_report *report)
1284{
1285        /* equivalent to DIV_ROUND_UP(report->size, 8) + !!(report->id > 0) */
1286        return ((report->size - 1) >> 3) + 1 + (report->id > 0);
1287}
1288
1289/*
1290 * Allocator for buffer that is going to be passed to hid_output_report()
1291 */
1292u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
1293{
1294        /*
1295         * 7 extra bytes are necessary to achieve proper functionality
1296         * of implement() working on 8 byte chunks
1297         */
1298
1299        int len = hid_report_len(report) + 7;
1300
1301        return kmalloc(len, flags);
1302}
1303EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
1304
1305/*
1306 * Set a field value. The report this field belongs to has to be
1307 * created and transferred to the device, to set this value in the
1308 * device.
1309 */
1310
1311int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1312{
1313        unsigned size;
1314
1315        if (!field)
1316                return -1;
1317
1318        size = field->report_size;
1319
1320        hid_dump_input(field->report->device, field->usage + offset, value);
1321
1322        if (offset >= field->report_count) {
1323                hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1324                                offset, field->report_count);
1325                return -1;
1326        }
1327        if (field->logical_minimum < 0) {
1328                if (value != snto32(s32ton(value, size), size)) {
1329                        hid_err(field->report->device, "value %d is out of range\n", value);
1330                        return -1;
1331                }
1332        }
1333        field->value[offset] = value;
1334        return 0;
1335}
1336EXPORT_SYMBOL_GPL(hid_set_field);
1337
1338static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1339                const u8 *data)
1340{
1341        struct hid_report *report;
1342        unsigned int n = 0;     /* Normally report number is 0 */
1343
1344        /* Device uses numbered reports, data[0] is report number */
1345        if (report_enum->numbered)
1346                n = *data;
1347
1348        report = report_enum->report_id_hash[n];
1349        if (report == NULL)
1350                dbg_hid("undefined report_id %u received\n", n);
1351
1352        return report;
1353}
1354
1355/*
1356 * Implement a generic .request() callback, using .raw_request()
1357 * DO NOT USE in hid drivers directly, but through hid_hw_request instead.
1358 */
1359void __hid_request(struct hid_device *hid, struct hid_report *report,
1360                int reqtype)
1361{
1362        char *buf;
1363        int ret;
1364        int len;
1365
1366        buf = hid_alloc_report_buf(report, GFP_KERNEL);
1367        if (!buf)
1368                return;
1369
1370        len = hid_report_len(report);
1371
1372        if (reqtype == HID_REQ_SET_REPORT)
1373                hid_output_report(report, buf);
1374
1375        ret = hid->ll_driver->raw_request(hid, report->id, buf, len,
1376                                          report->type, reqtype);
1377        if (ret < 0) {
1378                dbg_hid("unable to complete request: %d\n", ret);
1379                goto out;
1380        }
1381
1382        if (reqtype == HID_REQ_GET_REPORT)
1383                hid_input_report(hid, report->type, buf, ret, 0);
1384
1385out:
1386        kfree(buf);
1387}
1388EXPORT_SYMBOL_GPL(__hid_request);
1389
1390int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1391                int interrupt)
1392{
1393        struct hid_report_enum *report_enum = hid->report_enum + type;
1394        struct hid_report *report;
1395        struct hid_driver *hdrv;
1396        unsigned int a;
1397        int rsize, csize = size;
1398        u8 *cdata = data;
1399        int ret = 0;
1400
1401        report = hid_get_report(report_enum, data);
1402        if (!report)
1403                goto out;
1404
1405        if (report_enum->numbered) {
1406                cdata++;
1407                csize--;
1408        }
1409
1410        rsize = ((report->size - 1) >> 3) + 1;
1411
1412        if (rsize > HID_MAX_BUFFER_SIZE)
1413                rsize = HID_MAX_BUFFER_SIZE;
1414
1415        if (csize < rsize) {
1416                dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1417                                csize, rsize);
1418                memset(cdata + csize, 0, rsize - csize);
1419        }
1420
1421        if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1422                hid->hiddev_report_event(hid, report);
1423        if (hid->claimed & HID_CLAIMED_HIDRAW) {
1424                ret = hidraw_report_event(hid, data, size);
1425                if (ret)
1426                        goto out;
1427        }
1428
1429        if (hid->claimed != HID_CLAIMED_HIDRAW && report->maxfield) {
1430                for (a = 0; a < report->maxfield; a++)
1431                        hid_input_field(hid, report->field[a], cdata, interrupt);
1432                hdrv = hid->driver;
1433                if (hdrv && hdrv->report)
1434                        hdrv->report(hid, report);
1435        }
1436
1437        if (hid->claimed & HID_CLAIMED_INPUT)
1438                hidinput_report_event(hid, report);
1439out:
1440        return ret;
1441}
1442EXPORT_SYMBOL_GPL(hid_report_raw_event);
1443
1444/**
1445 * hid_input_report - report data from lower layer (usb, bt...)
1446 *
1447 * @hid: hid device
1448 * @type: HID report type (HID_*_REPORT)
1449 * @data: report contents
1450 * @size: size of data parameter
1451 * @interrupt: distinguish between interrupt and control transfers
1452 *
1453 * This is data entry for lower layers.
1454 */
1455int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1456{
1457        struct hid_report_enum *report_enum;
1458        struct hid_driver *hdrv;
1459        struct hid_report *report;
1460        int ret = 0;
1461
1462        if (!hid)
1463                return -ENODEV;
1464
1465        if (down_trylock(&hid->driver_input_lock))
1466                return -EBUSY;
1467
1468        if (!hid->driver) {
1469                ret = -ENODEV;
1470                goto unlock;
1471        }
1472        report_enum = hid->report_enum + type;
1473        hdrv = hid->driver;
1474
1475        if (!size) {
1476                dbg_hid("empty report\n");
1477                ret = -1;
1478                goto unlock;
1479        }
1480
1481        /* Avoid unnecessary overhead if debugfs is disabled */
1482        if (!list_empty(&hid->debug_list))
1483                hid_dump_report(hid, type, data, size);
1484
1485        report = hid_get_report(report_enum, data);
1486
1487        if (!report) {
1488                ret = -1;
1489                goto unlock;
1490        }
1491
1492        if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1493                ret = hdrv->raw_event(hid, report, data, size);
1494                if (ret < 0)
1495                        goto unlock;
1496        }
1497
1498        ret = hid_report_raw_event(hid, type, data, size, interrupt);
1499
1500unlock:
1501        up(&hid->driver_input_lock);
1502        return ret;
1503}
1504EXPORT_SYMBOL_GPL(hid_input_report);
1505
1506static bool hid_match_one_id(struct hid_device *hdev,
1507                const struct hid_device_id *id)
1508{
1509        return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1510                (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1511                (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1512                (id->product == HID_ANY_ID || id->product == hdev->product);
1513}
1514
1515const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1516                const struct hid_device_id *id)
1517{
1518        for (; id->bus; id++)
1519                if (hid_match_one_id(hdev, id))
1520                        return id;
1521
1522        return NULL;
1523}
1524
1525static const struct hid_device_id hid_hiddev_list[] = {
1526        { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1527        { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1528        { }
1529};
1530
1531static bool hid_hiddev(struct hid_device *hdev)
1532{
1533        return !!hid_match_id(hdev, hid_hiddev_list);
1534}
1535
1536
1537static ssize_t
1538read_report_descriptor(struct file *filp, struct kobject *kobj,
1539                struct bin_attribute *attr,
1540                char *buf, loff_t off, size_t count)
1541{
1542        struct device *dev = container_of(kobj, struct device, kobj);
1543        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1544
1545        if (off >= hdev->rsize)
1546                return 0;
1547
1548        if (off + count > hdev->rsize)
1549                count = hdev->rsize - off;
1550
1551        memcpy(buf, hdev->rdesc + off, count);
1552
1553        return count;
1554}
1555
1556static struct bin_attribute dev_bin_attr_report_desc = {
1557        .attr = { .name = "report_descriptor", .mode = 0444 },
1558        .read = read_report_descriptor,
1559        .size = HID_MAX_DESCRIPTOR_SIZE,
1560};
1561
1562int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1563{
1564        static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1565                "Joystick", "Gamepad", "Keyboard", "Keypad",
1566                "Multi-Axis Controller"
1567        };
1568        const char *type, *bus;
1569        char buf[64];
1570        unsigned int i;
1571        int len;
1572        int ret;
1573
1574        if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1575                connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1576        if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1577                connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1578        if (hdev->bus != BUS_USB)
1579                connect_mask &= ~HID_CONNECT_HIDDEV;
1580        if (hid_hiddev(hdev))
1581                connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1582
1583        if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1584                                connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1585                hdev->claimed |= HID_CLAIMED_INPUT;
1586
1587        if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1588                        !hdev->hiddev_connect(hdev,
1589                                connect_mask & HID_CONNECT_HIDDEV_FORCE))
1590                hdev->claimed |= HID_CLAIMED_HIDDEV;
1591        if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1592                hdev->claimed |= HID_CLAIMED_HIDRAW;
1593
1594        if (connect_mask & HID_CONNECT_DRIVER)
1595                hdev->claimed |= HID_CLAIMED_DRIVER;
1596
1597        /* Drivers with the ->raw_event callback set are not required to connect
1598         * to any other listener. */
1599        if (!hdev->claimed && !hdev->driver->raw_event) {
1600                hid_err(hdev, "device has no listeners, quitting\n");
1601                return -ENODEV;
1602        }
1603
1604        if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1605                        (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1606                hdev->ff_init(hdev);
1607
1608        len = 0;
1609        if (hdev->claimed & HID_CLAIMED_INPUT)
1610                len += sprintf(buf + len, "input");
1611        if (hdev->claimed & HID_CLAIMED_HIDDEV)
1612                len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1613                                hdev->minor);
1614        if (hdev->claimed & HID_CLAIMED_HIDRAW)
1615                len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1616                                ((struct hidraw *)hdev->hidraw)->minor);
1617
1618        type = "Device";
1619        for (i = 0; i < hdev->maxcollection; i++) {
1620                struct hid_collection *col = &hdev->collection[i];
1621                if (col->type == HID_COLLECTION_APPLICATION &&
1622                   (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1623                   (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1624                        type = types[col->usage & 0xffff];
1625                        break;
1626                }
1627        }
1628
1629        switch (hdev->bus) {
1630        case BUS_USB:
1631                bus = "USB";
1632                break;
1633        case BUS_BLUETOOTH:
1634                bus = "BLUETOOTH";
1635                break;
1636        default:
1637                bus = "<UNKNOWN>";
1638        }
1639
1640        ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1641        if (ret)
1642                hid_warn(hdev,
1643                         "can't create sysfs report descriptor attribute err: %d\n", ret);
1644
1645        hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1646                 buf, bus, hdev->version >> 8, hdev->version & 0xff,
1647                 type, hdev->name, hdev->phys);
1648
1649        return 0;
1650}
1651EXPORT_SYMBOL_GPL(hid_connect);
1652
1653void hid_disconnect(struct hid_device *hdev)
1654{
1655        device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1656        if (hdev->claimed & HID_CLAIMED_INPUT)
1657                hidinput_disconnect(hdev);
1658        if (hdev->claimed & HID_CLAIMED_HIDDEV)
1659                hdev->hiddev_disconnect(hdev);
1660        if (hdev->claimed & HID_CLAIMED_HIDRAW)
1661                hidraw_disconnect(hdev);
1662        hdev->claimed = 0;
1663}
1664EXPORT_SYMBOL_GPL(hid_disconnect);
1665
1666/*
1667 * A list of devices for which there is a specialized driver on HID bus.
1668 *
1669 * Please note that for multitouch devices (driven by hid-multitouch driver),
1670 * there is a proper autodetection and autoloading in place (based on presence
1671 * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1672 * as we are doing the right thing in hid_scan_usage().
1673 *
1674 * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1675 * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1676 * used as a driver. See hid_scan_report().
1677 */
1678static const struct hid_device_id hid_have_special_driver[] = {
1679        { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1680        { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1681        { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1682        { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1683        { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0xf705) },
1684        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1685        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1686        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1687        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1688        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1689        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1690        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1691        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1692        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1693        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1694        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1695        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1696        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1697        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1698        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1699        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1700        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1701        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1702        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1703        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1704        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1705        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1706        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1707        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1708        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1709        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1710        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1711        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1712        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1713        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1714        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1715        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1716        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1717        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1718        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1719        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1720        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1721        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1722        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1723        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1724        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1725        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1726        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1727        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1728        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1729        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1730        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1731        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1732        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1733        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1734        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1735        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1736        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1737        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1738        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1739        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1740        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1741        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1742        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1743        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1744        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1745        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1746        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1747        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1748        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1749        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1750        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1751        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1752        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1753        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1754        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1755        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1756        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1757        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1758        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1759        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_JIS) },
1760        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1761        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1762        { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1763        { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1764        { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1765        { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1766        { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1767        { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1768        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1769        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1770        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1771        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1772        { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1773        { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_CP2112) },
1774        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1775        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1776        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1777        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1778        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1779        { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1780        { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1781        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1782        { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
1783        { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
1784        { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1785        { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1786        { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1787        { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1788        { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1789        { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1790        { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1791        { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1792        { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1793        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1794        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1795        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
1796        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
1797        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
1798        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
1799        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
1800        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2) },
1801        { HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_TABLET) },
1802        { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1803        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1804        { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1805        { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1806        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
1807        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_MANTICORE) },
1808        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
1809        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1810        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1811        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1812        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1813        { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1814        { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1815#if IS_ENABLED(CONFIG_HID_LENOVO)
1816        { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1817        { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CUSBKBD) },
1818        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CBTKBD) },
1819#endif
1820        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1821        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1822        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1823        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1824        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1825        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1826        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1827        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1828        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1829        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1830        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1831        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1832        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1833        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1834        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1835        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1836        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1837        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1838        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1839        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1840        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1841        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_VIBRATION_WHEEL) },
1842        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1843        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1844        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1845        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1846#if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1847        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1848        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1849#endif
1850        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1851        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1852        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1853        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1854        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1855        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1856        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1857        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1858        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1859        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1860        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1861        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1862        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1863        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1864        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_OFFICE_KB) },
1865        { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1866        { HID_USB_DEVICE(USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL) },
1867        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1868        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1869        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1870        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1871        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1872        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1873        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1874        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1875        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1876        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1877        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1878        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1879        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1880        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1881        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1882        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1883        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1884        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1885        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1886        { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1887        { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1888        { HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_6000) },
1889        { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1890        { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1891#if IS_ENABLED(CONFIG_HID_ROCCAT)
1892        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1893        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1894        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKUFX) },
1895        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1896        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1897        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
1898        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
1899        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEXTD) },
1900        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1901        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
1902        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1903        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1904        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK) },
1905        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_GLOW) },
1906        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_PRO) },
1907        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1908#endif
1909#if IS_ENABLED(CONFIG_HID_SAITEK)
1910        { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1911        { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7) },
1912        { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_MMO7) },
1913#endif
1914        { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1915        { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1916        { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1917        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
1918        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
1919        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1920        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1921        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1922        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1923        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
1924        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
1925        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1926        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
1927        { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
1928        { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1929        { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
1930        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1931        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1932        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1933        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1934        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1935        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1936        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1937        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1938        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1939        { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1940        { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1941        { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1942        { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1943        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1944        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1945        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1946        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1947        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1948        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1949        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1950        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1951        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1952        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1953        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1954        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1955        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1956        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1957        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1958        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1959        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1960        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1961        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1962        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1963        { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1964        { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
1965        { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1966        { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1967        { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1968
1969        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1970        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1971        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1972        { }
1973};
1974
1975struct hid_dynid {
1976        struct list_head list;
1977        struct hid_device_id id;
1978};
1979
1980/**
1981 * store_new_id - add a new HID device ID to this driver and re-probe devices
1982 * @driver: target device driver
1983 * @buf: buffer for scanning device ID data
1984 * @count: input size
1985 *
1986 * Adds a new dynamic hid device ID to this driver,
1987 * and causes the driver to probe for all devices again.
1988 */
1989static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1990                size_t count)
1991{
1992        struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1993        struct hid_dynid *dynid;
1994        __u32 bus, vendor, product;
1995        unsigned long driver_data = 0;
1996        int ret;
1997
1998        ret = sscanf(buf, "%x %x %x %lx",
1999                        &bus, &vendor, &product, &driver_data);
2000        if (ret < 3)

2001                return -EINVAL;
2002
2003        dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
2004        if (!dynid)
2005                return -ENOMEM;
2006
2007        dynid->id.bus = bus;
2008        dynid->id.group = HID_GROUP_ANY;
2009        dynid->id.vendor = vendor;
2010        dynid->id.product = product;
2011        dynid->id.driver_data = driver_data;
2012
2013        spin_lock(&hdrv->dyn_lock);
2014        list_add_tail(&dynid->list, &hdrv->dyn_list);
2015        spin_unlock(&hdrv->dyn_lock);
2016
2017        ret = driver_attach(&hdrv->driver);
2018
2019        return ret ? : count;
2020}
2021static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
2022
2023static void hid_free_dynids(struct hid_driver *hdrv)
2024{
2025        struct hid_dynid *dynid, *n;
2026
2027        spin_lock(&hdrv->dyn_lock);
2028        list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
2029                list_del(&dynid->list);
2030                kfree(dynid);
2031        }
2032        spin_unlock(&hdrv->dyn_lock);
2033}
2034
2035static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
2036                struct hid_driver *hdrv)
2037{
2038        struct hid_dynid *dynid;
2039
2040        spin_lock(&hdrv->dyn_lock);
2041        list_for_each_entry(dynid, &hdrv->dyn_list, list) {
2042                if (hid_match_one_id(hdev, &dynid->id)) {
2043                        spin_unlock(&hdrv->dyn_lock);
2044                        return &dynid->id;
2045                }
2046        }
2047        spin_unlock(&hdrv->dyn_lock);
2048
2049        return hid_match_id(hdev, hdrv->id_table);
2050}
2051
2052static int hid_bus_match(struct device *dev, struct device_driver *drv)
2053{
2054        struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
2055        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2056
2057        return hid_match_device(hdev, hdrv) != NULL;
2058}
2059
2060static int hid_device_probe(struct device *dev)
2061{
2062        struct hid_driver *hdrv = container_of(dev->driver,
2063                        struct hid_driver, driver);
2064        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2065        const struct hid_device_id *id;
2066        int ret = 0;
2067
2068        if (down_interruptible(&hdev->driver_lock))
2069                return -EINTR;
2070        if (down_interruptible(&hdev->driver_input_lock)) {
2071                ret = -EINTR;
2072                goto unlock_driver_lock;
2073        }
2074        hdev->io_started = false;
2075
2076        if (!hdev->driver) {
2077                id = hid_match_device(hdev, hdrv);
2078                if (id == NULL) {
2079                        ret = -ENODEV;
2080                        goto unlock;
2081                }
2082
2083                hdev->driver = hdrv;
2084                if (hdrv->probe) {
2085                        ret = hdrv->probe(hdev, id);
2086                } else { /* default probe */
2087                        ret = hid_open_report(hdev);
2088                        if (!ret)
2089                                ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
2090                }
2091                if (ret) {
2092                        hid_close_report(hdev);
2093                        hdev->driver = NULL;
2094                }
2095        }
2096unlock:
2097        if (!hdev->io_started)
2098                up(&hdev->driver_input_lock);
2099unlock_driver_lock:
2100        up(&hdev->driver_lock);
2101        return ret;
2102}
2103
2104static int hid_device_remove(struct device *dev)
2105{
2106        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2107        struct hid_driver *hdrv;
2108        int ret = 0;
2109
2110        if (down_interruptible(&hdev->driver_lock))
2111                return -EINTR;
2112        if (down_interruptible(&hdev->driver_input_lock)) {
2113                ret = -EINTR;
2114                goto unlock_driver_lock;
2115        }
2116        hdev->io_started = false;
2117
2118        hdrv = hdev->driver;
2119        if (hdrv) {
2120                if (hdrv->remove)
2121                        hdrv->remove(hdev);
2122                else /* default remove */
2123                        hid_hw_stop(hdev);
2124                hid_close_report(hdev);
2125                hdev->driver = NULL;
2126        }
2127
2128        if (!hdev->io_started)
2129                up(&hdev->driver_input_lock);
2130unlock_driver_lock:
2131        up(&hdev->driver_lock);
2132        return ret;
2133}
2134
2135static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
2136                             char *buf)
2137{
2138        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2139        int len;
2140
2141        len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
2142                       hdev->bus, hdev->group, hdev->vendor, hdev->product);
2143
2144        return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
2145}
2146static DEVICE_ATTR_RO(modalias);
2147
2148static struct attribute *hid_dev_attrs[] = {
2149        &dev_attr_modalias.attr,
2150        NULL,
2151};
2152ATTRIBUTE_GROUPS(hid_dev);
2153
2154static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
2155{
2156        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2157
2158        if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
2159                        hdev->bus, hdev->vendor, hdev->product))
2160                return -ENOMEM;
2161
2162        if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
2163                return -ENOMEM;
2164
2165        if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
2166                return -ENOMEM;
2167
2168        if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
2169                return -ENOMEM;
2170
2171        if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
2172                           hdev->bus, hdev->group, hdev->vendor, hdev->product))
2173                return -ENOMEM;
2174
2175        return 0;
2176}
2177
2178static struct bus_type hid_bus_type = {
2179        .name           = "hid",
2180        .dev_groups     = hid_dev_groups,
2181        .match          = hid_bus_match,
2182        .probe          = hid_device_probe,
2183        .remove         = hid_device_remove,
2184        .uevent         = hid_uevent,
2185};
2186
2187/* a list of devices that shouldn't be handled by HID core at all */
2188static const struct hid_device_id hid_ignore_list[] = {
2189        { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
2190        { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
2191        { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
2192        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
2193        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
2194        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
2195        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
2196        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
2197        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
2198        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
2199        { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
2200        { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
2201        { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
2202        { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
2203        { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
2204        { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
2205        { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
2206        { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
2207        { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
2208        { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI4713) },
2209        { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
2210        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
2211        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
2212        { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
2213        { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
2214        { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
2215        { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
2216        { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
2217        { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
2218        { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
2219        { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
2220        { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
2221        { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
2222        { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
2223        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
2224        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
2225        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
2226        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
2227        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
2228        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
2229        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
2230        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
2231        { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2232        { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2233        { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2234        { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2235        { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2236        { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2237        { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2238        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2239        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2240        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2241        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2242        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2243        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2244        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2245        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2246        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2247        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2248        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2249        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2250        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2251        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2252        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2253        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2254        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2255        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2256        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2257        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2258        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2259        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2260        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2261        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2262        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2263        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2264        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2265        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2266        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2267        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2268        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2269        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2270        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2271        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2272        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2273        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2274        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2275        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2276        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2277        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2278        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2279        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2280        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2281        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2282        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2283        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2284        { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2285        { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
2286        { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
2287        { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_GN9350E) },
2288        { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2289        { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2290        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2291        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2292        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2293        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2294        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2295        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2296        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2297        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2298        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2299        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2300        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2301        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2302        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2303        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2304        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2305        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2306        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2307        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2308        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2309        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2310        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2311        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2312        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2313        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2314        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2315        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2316        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2317        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2318        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2319        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2320        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2321        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2322        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2323        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2324        { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2325        { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2326        { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2327        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2328        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2329        { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2330        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2331        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2332        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2333        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2334        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2335        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2336        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2337        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2338        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2339        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2340        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2341        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2342        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2343        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2344        { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2345        { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2346#if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2347        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2348        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2349        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2350        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2351        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2352        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2353        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2354        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2355#endif
2356        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2357        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2358        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2359        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2360        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2361        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2362        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2363        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2364        { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2365        { HID_USB_DEVICE(USB_VENDOR_ID_RISO_KAGAKU, USB_DEVICE_ID_RI_KA_WEBMAIL) },
2366        { }
2367};
2368
2369/**
2370 * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2371 *
2372 * There are composite devices for which we want to ignore only a certain
2373 * interface. This is a list of devices for which only the mouse interface will
2374 * be ignored. This allows a dedicated driver to take care of the interface.
2375 */
2376static const struct hid_device_id hid_mouse_ignore_list[] = {
2377        /* appletouch driver */
2378        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2379        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2380        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2381        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2382        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2383        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2384        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2385        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2386        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2387        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2388        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2389        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2390        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2391        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2392        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2393        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2394        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2395        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2396        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2397        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2398        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2399        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2400        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2401        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2402        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2403        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2404        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2405        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2406        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2407        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2408        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2409        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2410        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2411        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2412        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2413        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2414        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2415        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2416        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2417        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2418        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2419        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2420        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2421        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2422        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2423        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2424        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2425        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2426        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2427        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2428        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2429        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2430        { }
2431};
2432
2433bool hid_ignore(struct hid_device *hdev)
2434{
2435        if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2436                return false;
2437        if (hdev->quirks & HID_QUIRK_IGNORE)
2438                return true;
2439
2440        switch (hdev->vendor) {
2441        case USB_VENDOR_ID_CODEMERCS:
2442                /* ignore all Code Mercenaries IOWarrior devices */
2443                if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2444                                hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2445                        return true;
2446                break;
2447        case USB_VENDOR_ID_LOGITECH:
2448                if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2449                                hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2450                        return true;
2451                /*
2452                 * The Keene FM transmitter USB device has the same USB ID as
2453                 * the Logitech AudioHub Speaker, but it should ignore the hid.
2454                 * Check if the name is that of the Keene device.
2455                 * For reference: the name of the AudioHub is
2456                 * "HOLTEK  AudioHub Speaker".
2457                 */
2458                if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2459                        !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2460                                return true;
2461                break;
2462        case USB_VENDOR_ID_SOUNDGRAPH:
2463                if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2464                    hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2465                        return true;
2466                break;
2467        case USB_VENDOR_ID_HANWANG:
2468                if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2469                    hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2470                        return true;
2471                break;
2472        case USB_VENDOR_ID_JESS:
2473                if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2474                                hdev->type == HID_TYPE_USBNONE)
2475                        return true;
2476                break;
2477        case USB_VENDOR_ID_VELLEMAN:
2478                /* These are not HID devices.  They are handled by comedi. */
2479                if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2480                     hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2481                    (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2482                     hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2483                        return true;
2484                break;
2485        case USB_VENDOR_ID_ATMEL_V_USB:
2486                /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2487                 * it has the same USB ID as many Atmel V-USB devices. This
2488                 * usb radio is handled by radio-ma901.c driver so we want
2489                 * ignore the hid. Check the name, bus, product and ignore
2490                 * if we have MA901 usb radio.
2491                 */
2492                if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2493                        hdev->bus == BUS_USB &&
2494                        strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2495                        return true;
2496                break;
2497        }
2498
2499        if (hdev->type == HID_TYPE_USBMOUSE &&
2500                        hid_match_id(hdev, hid_mouse_ignore_list))
2501                return true;
2502
2503        return !!hid_match_id(hdev, hid_ignore_list);
2504}
2505EXPORT_SYMBOL_GPL(hid_ignore);
2506
2507int hid_add_device(struct hid_device *hdev)
2508{
2509        static atomic_t id = ATOMIC_INIT(0);
2510        int ret;
2511
2512        if (WARN_ON(hdev->status & HID_STAT_ADDED))
2513                return -EBUSY;
2514
2515        /* we need to kill them here, otherwise they will stay allocated to
2516         * wait for coming driver */
2517        if (hid_ignore(hdev))
2518                return -ENODEV;
2519
2520        /*
2521         * Check for the mandatory transport channel.
2522         */
2523         if (!hdev->ll_driver->raw_request) {
2524                hid_err(hdev, "transport driver missing .raw_request()\n");
2525                return -EINVAL;
2526         }
2527
2528        /*
2529         * Read the device report descriptor once and use as template
2530         * for the driver-specific modifications.
2531         */
2532        ret = hdev->ll_driver->parse(hdev);
2533        if (ret)
2534                return ret;
2535        if (!hdev->dev_rdesc)
2536                return -ENODEV;
2537
2538        /*
2539         * Scan generic devices for group information
2540         */
2541        if (hid_ignore_special_drivers ||
2542            !hid_match_id(hdev, hid_have_special_driver)) {
2543                ret = hid_scan_report(hdev);
2544                if (ret)
2545                        hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2546        }
2547
2548        /* XXX hack, any other cleaner solution after the driver core
2549         * is converted to allow more than 20 bytes as the device name? */
2550        dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2551                     hdev->vendor, hdev->product, atomic_inc_return(&id));
2552
2553        hid_debug_register(hdev, dev_name(&hdev->dev));
2554        ret = device_add(&hdev->dev);
2555        if (!ret)
2556                hdev->status |= HID_STAT_ADDED;
2557        else
2558                hid_debug_unregister(hdev);
2559
2560        return ret;
2561}
2562EXPORT_SYMBOL_GPL(hid_add_device);
2563
2564/**
2565 * hid_allocate_device - allocate new hid device descriptor
2566 *
2567 * Allocate and initialize hid device, so that hid_destroy_device might be
2568 * used to free it.
2569 *
2570 * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2571 * error value.
2572 */
2573struct hid_device *hid_allocate_device(void)
2574{
2575        struct hid_device *hdev;
2576        int ret = -ENOMEM;
2577
2578        hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2579        if (hdev == NULL)
2580                return ERR_PTR(ret);
2581
2582        device_initialize(&hdev->dev);
2583        hdev->dev.release = hid_device_release;
2584        hdev->dev.bus = &hid_bus_type;
2585
2586        hid_close_report(hdev);
2587
2588        init_waitqueue_head(&hdev->debug_wait);
2589        INIT_LIST_HEAD(&hdev->debug_list);
2590        spin_lock_init(&hdev->debug_list_lock);
2591        sema_init(&hdev->driver_lock, 1);
2592        sema_init(&hdev->driver_input_lock, 1);
2593
2594        return hdev;
2595}
2596EXPORT_SYMBOL_GPL(hid_allocate_device);
2597
2598static void hid_remove_device(struct hid_device *hdev)
2599{
2600        if (hdev->status & HID_STAT_ADDED) {
2601                device_del(&hdev->dev);
2602                hid_debug_unregister(hdev);
2603                hdev->status &= ~HID_STAT_ADDED;
2604        }
2605        kfree(hdev->dev_rdesc);
2606        hdev->dev_rdesc = NULL;
2607        hdev->dev_rsize = 0;
2608}
2609
2610/**
2611 * hid_destroy_device - free previously allocated device
2612 *
2613 * @hdev: hid device
2614 *
2615 * If you allocate hid_device through hid_allocate_device, you should ever
2616 * free by this function.
2617 */
2618void hid_destroy_device(struct hid_device *hdev)
2619{
2620        hid_remove_device(hdev);
2621        put_device(&hdev->dev);
2622}
2623EXPORT_SYMBOL_GPL(hid_destroy_device);
2624
2625int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2626                const char *mod_name)
2627{
2628        int ret;
2629
2630        hdrv->driver.name = hdrv->name;
2631        hdrv->driver.bus = &hid_bus_type;
2632        hdrv->driver.owner = owner;
2633        hdrv->driver.mod_name = mod_name;
2634
2635        INIT_LIST_HEAD(&hdrv->dyn_list);
2636        spin_lock_init(&hdrv->dyn_lock);
2637
2638        ret = driver_register(&hdrv->driver);
2639        if (ret)
2640                return ret;
2641
2642        ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2643        if (ret)
2644                driver_unregister(&hdrv->driver);
2645
2646        return ret;
2647}
2648EXPORT_SYMBOL_GPL(__hid_register_driver);
2649
2650void hid_unregister_driver(struct hid_driver *hdrv)
2651{
2652        driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2653        driver_unregister(&hdrv->driver);
2654        hid_free_dynids(hdrv);
2655}
2656EXPORT_SYMBOL_GPL(hid_unregister_driver);
2657
2658int hid_check_keys_pressed(struct hid_device *hid)
2659{
2660        struct hid_input *hidinput;
2661        int i;
2662
2663        if (!(hid->claimed & HID_CLAIMED_INPUT))
2664                return 0;
2665
2666        list_for_each_entry(hidinput, &hid->inputs, list) {
2667                for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2668                        if (hidinput->input->key[i])
2669                                return 1;
2670        }
2671
2672        return 0;
2673}
2674
2675EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2676
2677static int __init hid_init(void)
2678{
2679        int ret;
2680
2681        if (hid_debug)
2682                pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2683                        "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2684
2685        ret = bus_register(&hid_bus_type);
2686        if (ret) {
2687                pr_err("can't register hid bus\n");
2688                goto err;
2689        }
2690
2691        ret = hidraw_init();
2692        if (ret)
2693                goto err_bus;
2694
2695        hid_debug_init();
2696
2697        return 0;
2698err_bus:
2699        bus_unregister(&hid_bus_type);
2700err:
2701        return ret;
2702}
2703
2704static void __exit hid_exit(void)
2705{
2706        hid_debug_exit();
2707        hidraw_exit();
2708        bus_unregister(&hid_bus_type);
2709}
2710
2711module_init(hid_init);
2712module_exit(hid_exit);
2713
2714MODULE_AUTHOR("Andreas Gal");
2715MODULE_AUTHOR("Vojtech Pavlik");
2716MODULE_AUTHOR("Jiri Kosina");
2717MODULE_LICENSE(DRIVER_LICENSE);
2718
2719