linux/drivers/hid/hid-core.c
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   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(debug, "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 (report_enum->report_id_hash[id])
  67                return report_enum->report_id_hash[id];
  68
  69        report = kzalloc(sizeof(struct hid_report), GFP_KERNEL);
  70        if (!report)
  71                return NULL;
  72
  73        if (id != 0)
  74                report_enum->numbered = 1;
  75
  76        report->id = id;
  77        report->type = type;
  78        report->size = 0;
  79        report->device = device;
  80        report_enum->report_id_hash[id] = report;
  81
  82        list_add_tail(&report->list, &report_enum->report_list);
  83
  84        return report;
  85}
  86EXPORT_SYMBOL_GPL(hid_register_report);
  87
  88/*
  89 * Register a new field for this report.
  90 */
  91
  92static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
  93{
  94        struct hid_field *field;
  95        int i;
  96
  97        if (report->maxfield == HID_MAX_FIELDS) {
  98                hid_err(report->device, "too many fields in report\n");
  99                return NULL;
 100        }
 101
 102        field = kzalloc((sizeof(struct hid_field) +
 103                         usages * sizeof(struct hid_usage) +
 104                         values * sizeof(unsigned)), GFP_KERNEL);
 105        if (!field)
 106                return NULL;
 107
 108        field->index = report->maxfield++;
 109        report->field[field->index] = field;
 110        field->usage = (struct hid_usage *)(field + 1);
 111        field->value = (s32 *)(field->usage + usages);
 112        field->report = report;
 113
 114        for (i = 0; i < usages; i++)
 115                field->usage[i].usage_index = i;
 116
 117        return field;
 118}
 119
 120/*
 121 * Open a collection. The type/usage is pushed on the stack.
 122 */
 123
 124static int open_collection(struct hid_parser *parser, unsigned type)
 125{
 126        struct hid_collection *collection;
 127        unsigned usage;
 128
 129        usage = parser->local.usage[0];
 130
 131        if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
 132                hid_err(parser->device, "collection stack overflow\n");
 133                return -EINVAL;
 134        }
 135
 136        if (parser->device->maxcollection == parser->device->collection_size) {
 137                collection = kmalloc(sizeof(struct hid_collection) *
 138                                parser->device->collection_size * 2, GFP_KERNEL);
 139                if (collection == NULL) {
 140                        hid_err(parser->device, "failed to reallocate collection array\n");
 141                        return -ENOMEM;
 142                }
 143                memcpy(collection, parser->device->collection,
 144                        sizeof(struct hid_collection) *
 145                        parser->device->collection_size);
 146                memset(collection + parser->device->collection_size, 0,
 147                        sizeof(struct hid_collection) *
 148                        parser->device->collection_size);
 149                kfree(parser->device->collection);
 150                parser->device->collection = collection;
 151                parser->device->collection_size *= 2;
 152        }
 153
 154        parser->collection_stack[parser->collection_stack_ptr++] =
 155                parser->device->maxcollection;
 156
 157        collection = parser->device->collection +
 158                parser->device->maxcollection++;
 159        collection->type = type;
 160        collection->usage = usage;
 161        collection->level = parser->collection_stack_ptr - 1;
 162
 163        if (type == HID_COLLECTION_APPLICATION)
 164                parser->device->maxapplication++;
 165
 166        return 0;
 167}
 168
 169/*
 170 * Close a collection.
 171 */
 172
 173static int close_collection(struct hid_parser *parser)
 174{
 175        if (!parser->collection_stack_ptr) {
 176                hid_err(parser->device, "collection stack underflow\n");
 177                return -EINVAL;
 178        }
 179        parser->collection_stack_ptr--;
 180        return 0;
 181}
 182
 183/*
 184 * Climb up the stack, search for the specified collection type
 185 * and return the usage.
 186 */
 187
 188static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
 189{
 190        struct hid_collection *collection = parser->device->collection;
 191        int n;
 192
 193        for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
 194                unsigned index = parser->collection_stack[n];
 195                if (collection[index].type == type)
 196                        return collection[index].usage;
 197        }
 198        return 0; /* we know nothing about this usage type */
 199}
 200
 201/*
 202 * Add a usage to the temporary parser table.
 203 */
 204
 205static int hid_add_usage(struct hid_parser *parser, unsigned usage)
 206{
 207        if (parser->local.usage_index >= HID_MAX_USAGES) {
 208                hid_err(parser->device, "usage index exceeded\n");
 209                return -1;
 210        }
 211        parser->local.usage[parser->local.usage_index] = usage;
 212        parser->local.collection_index[parser->local.usage_index] =
 213                parser->collection_stack_ptr ?
 214                parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
 215        parser->local.usage_index++;
 216        return 0;
 217}
 218
 219/*
 220 * Register a new field for this report.
 221 */
 222
 223static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
 224{
 225        struct hid_report *report;
 226        struct hid_field *field;
 227        int usages;
 228        unsigned offset;
 229        int i;
 230
 231        report = hid_register_report(parser->device, report_type, parser->global.report_id);
 232        if (!report) {
 233                hid_err(parser->device, "hid_register_report failed\n");
 234                return -1;
 235        }
 236
 237        /* Handle both signed and unsigned cases properly */
 238        if ((parser->global.logical_minimum < 0 &&
 239                parser->global.logical_maximum <
 240                parser->global.logical_minimum) ||
 241                (parser->global.logical_minimum >= 0 &&
 242                (__u32)parser->global.logical_maximum <
 243                (__u32)parser->global.logical_minimum)) {
 244                dbg_hid("logical range invalid 0x%x 0x%x\n",
 245                        parser->global.logical_minimum,
 246                        parser->global.logical_maximum);
 247                return -1;
 248        }
 249
 250        offset = report->size;
 251        report->size += parser->global.report_size * parser->global.report_count;
 252
 253        if (!parser->local.usage_index) /* Ignore padding fields */
 254                return 0;
 255
 256        usages = max_t(int, parser->local.usage_index, parser->global.report_count);
 257
 258        field = hid_register_field(report, usages, parser->global.report_count);
 259        if (!field)
 260                return 0;
 261
 262        field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
 263        field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
 264        field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
 265
 266        for (i = 0; i < usages; i++) {
 267                int j = i;
 268                /* Duplicate the last usage we parsed if we have excess values */
 269                if (i >= parser->local.usage_index)
 270                        j = parser->local.usage_index - 1;
 271                field->usage[i].hid = parser->local.usage[j];
 272                field->usage[i].collection_index =
 273                        parser->local.collection_index[j];
 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        __u32 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                /* Units exponent negative numbers are given through a
 374                 * two's complement.
 375                 * See "6.2.2.7 Global Items" for more information. */
 376                raw_value = item_udata(item);
 377                if (!(raw_value & 0xfffffff0))
 378                        parser->global.unit_exponent = hid_snto32(raw_value, 4);
 379                else
 380                        parser->global.unit_exponent = raw_value;
 381                return 0;
 382
 383        case HID_GLOBAL_ITEM_TAG_UNIT:
 384                parser->global.unit = item_udata(item);
 385                return 0;
 386
 387        case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
 388                parser->global.report_size = item_udata(item);
 389                if (parser->global.report_size > 128) {
 390                        hid_err(parser->device, "invalid report_size %d\n",
 391                                        parser->global.report_size);
 392                        return -1;
 393                }
 394                return 0;
 395
 396        case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
 397                parser->global.report_count = item_udata(item);
 398                if (parser->global.report_count > HID_MAX_USAGES) {
 399                        hid_err(parser->device, "invalid report_count %d\n",
 400                                        parser->global.report_count);
 401                        return -1;
 402                }
 403                return 0;
 404
 405        case HID_GLOBAL_ITEM_TAG_REPORT_ID:
 406                parser->global.report_id = item_udata(item);
 407                if (parser->global.report_id == 0) {
 408                        hid_err(parser->device, "report_id 0 is invalid\n");
 409                        return -1;
 410                }
 411                return 0;
 412
 413        default:
 414                hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
 415                return -1;
 416        }
 417}
 418
 419/*
 420 * Process a local item.
 421 */
 422
 423static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 424{
 425        __u32 data;
 426        unsigned n;
 427
 428        data = item_udata(item);
 429
 430        switch (item->tag) {
 431        case HID_LOCAL_ITEM_TAG_DELIMITER:
 432
 433                if (data) {
 434                        /*
 435                         * We treat items before the first delimiter
 436                         * as global to all usage sets (branch 0).
 437                         * In the moment we process only these global
 438                         * items and the first delimiter set.
 439                         */
 440                        if (parser->local.delimiter_depth != 0) {
 441                                hid_err(parser->device, "nested delimiters\n");
 442                                return -1;
 443                        }
 444                        parser->local.delimiter_depth++;
 445                        parser->local.delimiter_branch++;
 446                } else {
 447                        if (parser->local.delimiter_depth < 1) {
 448                                hid_err(parser->device, "bogus close delimiter\n");
 449                                return -1;
 450                        }
 451                        parser->local.delimiter_depth--;
 452                }
 453                return 1;
 454
 455        case HID_LOCAL_ITEM_TAG_USAGE:
 456
 457                if (parser->local.delimiter_branch > 1) {
 458                        dbg_hid("alternative usage ignored\n");
 459                        return 0;
 460                }
 461
 462                if (item->size <= 2)
 463                        data = (parser->global.usage_page << 16) + data;
 464
 465                return hid_add_usage(parser, data);
 466
 467        case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 468
 469                if (parser->local.delimiter_branch > 1) {
 470                        dbg_hid("alternative usage ignored\n");
 471                        return 0;
 472                }
 473
 474                if (item->size <= 2)
 475                        data = (parser->global.usage_page << 16) + data;
 476
 477                parser->local.usage_minimum = data;
 478                return 0;
 479
 480        case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 481
 482                if (parser->local.delimiter_branch > 1) {
 483                        dbg_hid("alternative usage ignored\n");
 484                        return 0;
 485                }
 486
 487                if (item->size <= 2)
 488                        data = (parser->global.usage_page << 16) + data;
 489
 490                for (n = parser->local.usage_minimum; n <= data; n++)
 491                        if (hid_add_usage(parser, n)) {
 492                                dbg_hid("hid_add_usage failed\n");
 493                                return -1;
 494                        }
 495                return 0;
 496
 497        default:
 498
 499                dbg_hid("unknown local item tag 0x%x\n", item->tag);
 500                return 0;
 501        }
 502        return 0;
 503}
 504
 505/*
 506 * Process a main item.
 507 */
 508
 509static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
 510{
 511        __u32 data;
 512        int ret;
 513
 514        data = item_udata(item);
 515
 516        switch (item->tag) {
 517        case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 518                ret = open_collection(parser, data & 0xff);
 519                break;
 520        case HID_MAIN_ITEM_TAG_END_COLLECTION:
 521                ret = close_collection(parser);
 522                break;
 523        case HID_MAIN_ITEM_TAG_INPUT:
 524                ret = hid_add_field(parser, HID_INPUT_REPORT, data);
 525                break;
 526        case HID_MAIN_ITEM_TAG_OUTPUT:
 527                ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
 528                break;
 529        case HID_MAIN_ITEM_TAG_FEATURE:
 530                ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
 531                break;
 532        default:
 533                hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
 534                ret = 0;
 535        }
 536
 537        memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
 538
 539        return ret;
 540}
 541
 542/*
 543 * Process a reserved item.
 544 */
 545
 546static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
 547{
 548        dbg_hid("reserved item type, tag 0x%x\n", item->tag);
 549        return 0;
 550}
 551
 552/*
 553 * Free a report and all registered fields. The field->usage and
 554 * field->value table's are allocated behind the field, so we need
 555 * only to free(field) itself.
 556 */
 557
 558static void hid_free_report(struct hid_report *report)
 559{
 560        unsigned n;
 561
 562        for (n = 0; n < report->maxfield; n++)
 563                kfree(report->field[n]);
 564        kfree(report);
 565}
 566
 567/*
 568 * Close report. This function returns the device
 569 * state to the point prior to hid_open_report().
 570 */
 571static void hid_close_report(struct hid_device *device)
 572{
 573        unsigned i, j;
 574
 575        for (i = 0; i < HID_REPORT_TYPES; i++) {
 576                struct hid_report_enum *report_enum = device->report_enum + i;
 577
 578                for (j = 0; j < 256; j++) {
 579                        struct hid_report *report = report_enum->report_id_hash[j];
 580                        if (report)
 581                                hid_free_report(report);
 582                }
 583                memset(report_enum, 0, sizeof(*report_enum));
 584                INIT_LIST_HEAD(&report_enum->report_list);
 585        }
 586
 587        kfree(device->rdesc);
 588        device->rdesc = NULL;
 589        device->rsize = 0;
 590
 591        kfree(device->collection);
 592        device->collection = NULL;
 593        device->collection_size = 0;
 594        device->maxcollection = 0;
 595        device->maxapplication = 0;
 596
 597        device->status &= ~HID_STAT_PARSED;
 598}
 599
 600/*
 601 * Free a device structure, all reports, and all fields.
 602 */
 603
 604static void hid_device_release(struct device *dev)
 605{
 606        struct hid_device *hid = container_of(dev, struct hid_device, dev);
 607
 608        hid_close_report(hid);
 609        kfree(hid->dev_rdesc);
 610        kfree(hid);
 611}
 612
 613/*
 614 * Fetch a report description item from the data stream. We support long
 615 * items, though they are not used yet.
 616 */
 617
 618static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
 619{
 620        u8 b;
 621
 622        if ((end - start) <= 0)
 623                return NULL;
 624
 625        b = *start++;
 626
 627        item->type = (b >> 2) & 3;
 628        item->tag  = (b >> 4) & 15;
 629
 630        if (item->tag == HID_ITEM_TAG_LONG) {
 631
 632                item->format = HID_ITEM_FORMAT_LONG;
 633
 634                if ((end - start) < 2)
 635                        return NULL;
 636
 637                item->size = *start++;
 638                item->tag  = *start++;
 639
 640                if ((end - start) < item->size)
 641                        return NULL;
 642
 643                item->data.longdata = start;
 644                start += item->size;
 645                return start;
 646        }
 647
 648        item->format = HID_ITEM_FORMAT_SHORT;
 649        item->size = b & 3;
 650
 651        switch (item->size) {
 652        case 0:
 653                return start;
 654
 655        case 1:
 656                if ((end - start) < 1)
 657                        return NULL;
 658                item->data.u8 = *start++;
 659                return start;
 660
 661        case 2:
 662                if ((end - start) < 2)
 663                        return NULL;
 664                item->data.u16 = get_unaligned_le16(start);
 665                start = (__u8 *)((__le16 *)start + 1);
 666                return start;
 667
 668        case 3:
 669                item->size++;
 670                if ((end - start) < 4)
 671                        return NULL;
 672                item->data.u32 = get_unaligned_le32(start);
 673                start = (__u8 *)((__le32 *)start + 1);
 674                return start;
 675        }
 676
 677        return NULL;
 678}
 679
 680static void hid_scan_usage(struct hid_device *hid, u32 usage)
 681{
 682        if (usage == HID_DG_CONTACTID)
 683                hid->group = HID_GROUP_MULTITOUCH;
 684}
 685
 686/*
 687 * Scan a report descriptor before the device is added to the bus.
 688 * Sets device groups and other properties that determine what driver
 689 * to load.
 690 */
 691static int hid_scan_report(struct hid_device *hid)
 692{
 693        unsigned int page = 0, delim = 0;
 694        __u8 *start = hid->dev_rdesc;
 695        __u8 *end = start + hid->dev_rsize;
 696        unsigned int u, u_min = 0, u_max = 0;
 697        struct hid_item item;
 698
 699        hid->group = HID_GROUP_GENERIC;
 700        while ((start = fetch_item(start, end, &item)) != NULL) {
 701                if (item.format != HID_ITEM_FORMAT_SHORT)
 702                        return -EINVAL;
 703                if (item.type == HID_ITEM_TYPE_GLOBAL) {
 704                        if (item.tag == HID_GLOBAL_ITEM_TAG_USAGE_PAGE)
 705                                page = item_udata(&item) << 16;
 706                } else if (item.type == HID_ITEM_TYPE_LOCAL) {
 707                        if (delim > 1)
 708                                break;
 709                        u = item_udata(&item);
 710                        if (item.size <= 2)
 711                                u += page;
 712                        switch (item.tag) {
 713                        case HID_LOCAL_ITEM_TAG_DELIMITER:
 714                                delim += !!u;
 715                                break;
 716                        case HID_LOCAL_ITEM_TAG_USAGE:
 717                                hid_scan_usage(hid, u);
 718                                break;
 719                        case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 720                                u_min = u;
 721                                break;
 722                        case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 723                                u_max = u;
 724                                for (u = u_min; u <= u_max; u++)
 725                                        hid_scan_usage(hid, u);
 726                                break;
 727                        }
 728                } else if (page == HID_UP_SENSOR &&
 729                        item.type == HID_ITEM_TYPE_MAIN &&
 730                        item.tag == HID_MAIN_ITEM_TAG_BEGIN_COLLECTION &&
 731                        (item_udata(&item) & 0xff) == HID_COLLECTION_PHYSICAL)
 732                        hid->group = HID_GROUP_SENSOR_HUB;
 733        }
 734
 735        return 0;
 736}
 737
 738/**
 739 * hid_parse_report - parse device report
 740 *
 741 * @device: hid device
 742 * @start: report start
 743 * @size: report size
 744 *
 745 * Allocate the device report as read by the bus driver. This function should
 746 * only be called from parse() in ll drivers.
 747 */
 748int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
 749{
 750        hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
 751        if (!hid->dev_rdesc)
 752                return -ENOMEM;
 753        hid->dev_rsize = size;
 754        return 0;
 755}
 756EXPORT_SYMBOL_GPL(hid_parse_report);
 757
 758/**
 759 * hid_open_report - open a driver-specific device report
 760 *
 761 * @device: hid device
 762 *
 763 * Parse a report description into a hid_device structure. Reports are
 764 * enumerated, fields are attached to these reports.
 765 * 0 returned on success, otherwise nonzero error value.
 766 *
 767 * This function (or the equivalent hid_parse() macro) should only be
 768 * called from probe() in drivers, before starting the device.
 769 */
 770int hid_open_report(struct hid_device *device)
 771{
 772        struct hid_parser *parser;
 773        struct hid_item item;
 774        unsigned int size;
 775        __u8 *start;
 776        __u8 *buf;
 777        __u8 *end;
 778        int ret;
 779        static int (*dispatch_type[])(struct hid_parser *parser,
 780                                      struct hid_item *item) = {
 781                hid_parser_main,
 782                hid_parser_global,
 783                hid_parser_local,
 784                hid_parser_reserved
 785        };
 786
 787        if (WARN_ON(device->status & HID_STAT_PARSED))
 788                return -EBUSY;
 789
 790        start = device->dev_rdesc;
 791        if (WARN_ON(!start))
 792                return -ENODEV;
 793        size = device->dev_rsize;
 794
 795        buf = kmemdup(start, size, GFP_KERNEL);
 796        if (buf == NULL)
 797                return -ENOMEM;
 798
 799        if (device->driver->report_fixup)
 800                start = device->driver->report_fixup(device, buf, &size);
 801        else
 802                start = buf;
 803
 804        start = kmemdup(start, size, GFP_KERNEL);
 805        kfree(buf);
 806        if (start == NULL)
 807                return -ENOMEM;
 808
 809        device->rdesc = start;
 810        device->rsize = size;
 811
 812        parser = vzalloc(sizeof(struct hid_parser));
 813        if (!parser) {
 814                ret = -ENOMEM;
 815                goto err;
 816        }
 817
 818        parser->device = device;
 819
 820        end = start + size;
 821
 822        device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
 823                                     sizeof(struct hid_collection), GFP_KERNEL);
 824        if (!device->collection) {
 825                ret = -ENOMEM;
 826                goto err;
 827        }
 828        device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
 829
 830        ret = -EINVAL;
 831        while ((start = fetch_item(start, end, &item)) != NULL) {
 832
 833                if (item.format != HID_ITEM_FORMAT_SHORT) {
 834                        hid_err(device, "unexpected long global item\n");
 835                        goto err;
 836                }
 837
 838                if (dispatch_type[item.type](parser, &item)) {
 839                        hid_err(device, "item %u %u %u %u parsing failed\n",
 840                                item.format, (unsigned)item.size,
 841                                (unsigned)item.type, (unsigned)item.tag);
 842                        goto err;
 843                }
 844
 845                if (start == end) {
 846                        if (parser->collection_stack_ptr) {
 847                                hid_err(device, "unbalanced collection at end of report description\n");
 848                                goto err;
 849                        }
 850                        if (parser->local.delimiter_depth) {
 851                                hid_err(device, "unbalanced delimiter at end of report description\n");
 852                                goto err;
 853                        }
 854                        vfree(parser);
 855                        device->status |= HID_STAT_PARSED;
 856                        return 0;
 857                }
 858        }
 859
 860        hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
 861err:
 862        vfree(parser);
 863        hid_close_report(device);
 864        return ret;
 865}
 866EXPORT_SYMBOL_GPL(hid_open_report);
 867
 868/*
 869 * Convert a signed n-bit integer to signed 32-bit integer. Common
 870 * cases are done through the compiler, the screwed things has to be
 871 * done by hand.
 872 */
 873
 874static s32 snto32(__u32 value, unsigned n)
 875{
 876        switch (n) {
 877        case 8:  return ((__s8)value);
 878        case 16: return ((__s16)value);
 879        case 32: return ((__s32)value);
 880        }
 881        return value & (1 << (n - 1)) ? value | (-1 << n) : value;
 882}
 883
 884s32 hid_snto32(__u32 value, unsigned n)
 885{
 886        return snto32(value, n);
 887}
 888EXPORT_SYMBOL_GPL(hid_snto32);
 889
 890/*
 891 * Convert a signed 32-bit integer to a signed n-bit integer.
 892 */
 893
 894static u32 s32ton(__s32 value, unsigned n)
 895{
 896        s32 a = value >> (n - 1);
 897        if (a && a != -1)
 898                return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
 899        return value & ((1 << n) - 1);
 900}
 901
 902/*
 903 * Extract/implement a data field from/to a little endian report (bit array).
 904 *
 905 * Code sort-of follows HID spec:
 906 *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
 907 *
 908 * While the USB HID spec allows unlimited length bit fields in "report
 909 * descriptors", most devices never use more than 16 bits.
 910 * One model of UPS is claimed to report "LINEV" as a 32-bit field.
 911 * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
 912 */
 913
 914static __u32 extract(const struct hid_device *hid, __u8 *report,
 915                     unsigned offset, unsigned n)
 916{
 917        u64 x;
 918
 919        if (n > 32)
 920                hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
 921                         n, current->comm);
 922
 923        report += offset >> 3;  /* adjust byte index */
 924        offset &= 7;            /* now only need bit offset into one byte */
 925        x = get_unaligned_le64(report);
 926        x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
 927        return (u32) x;
 928}
 929
 930/*
 931 * "implement" : set bits in a little endian bit stream.
 932 * Same concepts as "extract" (see comments above).
 933 * The data mangled in the bit stream remains in little endian
 934 * order the whole time. It make more sense to talk about
 935 * endianness of register values by considering a register
 936 * a "cached" copy of the little endiad bit stream.
 937 */
 938static void implement(const struct hid_device *hid, __u8 *report,
 939                      unsigned offset, unsigned n, __u32 value)
 940{
 941        u64 x;
 942        u64 m = (1ULL << n) - 1;
 943
 944        if (n > 32)
 945                hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
 946                         __func__, n, current->comm);
 947
 948        if (value > m)
 949                hid_warn(hid, "%s() called with too large value %d! (%s)\n",
 950                         __func__, value, current->comm);
 951        WARN_ON(value > m);
 952        value &= m;
 953
 954        report += offset >> 3;
 955        offset &= 7;
 956
 957        x = get_unaligned_le64(report);
 958        x &= ~(m << offset);
 959        x |= ((u64)value) << offset;
 960        put_unaligned_le64(x, report);
 961}
 962
 963/*
 964 * Search an array for a value.
 965 */
 966
 967static int search(__s32 *array, __s32 value, unsigned n)
 968{
 969        while (n--) {
 970                if (*array++ == value)
 971                        return 0;
 972        }
 973        return -1;
 974}
 975
 976/**
 977 * hid_match_report - check if driver's raw_event should be called
 978 *
 979 * @hid: hid device
 980 * @report_type: type to match against
 981 *
 982 * compare hid->driver->report_table->report_type to report->type
 983 */
 984static int hid_match_report(struct hid_device *hid, struct hid_report *report)
 985{
 986        const struct hid_report_id *id = hid->driver->report_table;
 987
 988        if (!id) /* NULL means all */
 989                return 1;
 990
 991        for (; id->report_type != HID_TERMINATOR; id++)
 992                if (id->report_type == HID_ANY_ID ||
 993                                id->report_type == report->type)
 994                        return 1;
 995        return 0;
 996}
 997
 998/**
 999 * hid_match_usage - check if driver's event should be called
1000 *
1001 * @hid: hid device
1002 * @usage: usage to match against
1003 *
1004 * compare hid->driver->usage_table->usage_{type,code} to
1005 * usage->usage_{type,code}
1006 */
1007static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1008{
1009        const struct hid_usage_id *id = hid->driver->usage_table;
1010
1011        if (!id) /* NULL means all */
1012                return 1;
1013
1014        for (; id->usage_type != HID_ANY_ID - 1; id++)
1015                if ((id->usage_hid == HID_ANY_ID ||
1016                                id->usage_hid == usage->hid) &&
1017                                (id->usage_type == HID_ANY_ID ||
1018                                id->usage_type == usage->type) &&
1019                                (id->usage_code == HID_ANY_ID ||
1020                                 id->usage_code == usage->code))
1021                        return 1;
1022        return 0;
1023}
1024
1025static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1026                struct hid_usage *usage, __s32 value, int interrupt)
1027{
1028        struct hid_driver *hdrv = hid->driver;
1029        int ret;
1030
1031        if (!list_empty(&hid->debug_list))
1032                hid_dump_input(hid, usage, value);
1033
1034        if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1035                ret = hdrv->event(hid, field, usage, value);
1036                if (ret != 0) {
1037                        if (ret < 0)
1038                                hid_err(hid, "%s's event failed with %d\n",
1039                                                hdrv->name, ret);
1040                        return;
1041                }
1042        }
1043
1044        if (hid->claimed & HID_CLAIMED_INPUT)
1045                hidinput_hid_event(hid, field, usage, value);
1046        if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1047                hid->hiddev_hid_event(hid, field, usage, value);
1048}
1049
1050/*
1051 * Analyse a received field, and fetch the data from it. The field
1052 * content is stored for next report processing (we do differential
1053 * reporting to the layer).
1054 */
1055
1056static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1057                            __u8 *data, int interrupt)
1058{
1059        unsigned n;
1060        unsigned count = field->report_count;
1061        unsigned offset = field->report_offset;
1062        unsigned size = field->report_size;
1063        __s32 min = field->logical_minimum;
1064        __s32 max = field->logical_maximum;
1065        __s32 *value;
1066
1067        value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1068        if (!value)
1069                return;
1070
1071        for (n = 0; n < count; n++) {
1072
1073                value[n] = min < 0 ?
1074                        snto32(extract(hid, data, offset + n * size, size),
1075                               size) :
1076                        extract(hid, data, offset + n * size, size);
1077
1078                /* Ignore report if ErrorRollOver */
1079                if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1080                    value[n] >= min && value[n] <= max &&
1081                    field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1082                        goto exit;
1083        }
1084
1085        for (n = 0; n < count; n++) {
1086
1087                if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1088                        hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1089                        continue;
1090                }
1091
1092                if (field->value[n] >= min && field->value[n] <= max
1093                        && field->usage[field->value[n] - min].hid
1094                        && search(value, field->value[n], count))
1095                                hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1096
1097                if (value[n] >= min && value[n] <= max
1098                        && field->usage[value[n] - min].hid
1099                        && search(field->value, value[n], count))
1100                                hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1101        }
1102
1103        memcpy(field->value, value, count * sizeof(__s32));
1104exit:
1105        kfree(value);
1106}
1107
1108/*
1109 * Output the field into the report.
1110 */
1111
1112static void hid_output_field(const struct hid_device *hid,
1113                             struct hid_field *field, __u8 *data)
1114{
1115        unsigned count = field->report_count;
1116        unsigned offset = field->report_offset;
1117        unsigned size = field->report_size;
1118        unsigned n;
1119
1120        for (n = 0; n < count; n++) {
1121                if (field->logical_minimum < 0) /* signed values */
1122                        implement(hid, data, offset + n * size, size,
1123                                  s32ton(field->value[n], size));
1124                else                            /* unsigned values */
1125                        implement(hid, data, offset + n * size, size,
1126                                  field->value[n]);
1127        }
1128}
1129
1130/*
1131 * Create a report.
1132 */
1133
1134void hid_output_report(struct hid_report *report, __u8 *data)
1135{
1136        unsigned n;
1137
1138        if (report->id > 0)
1139                *data++ = report->id;
1140
1141        memset(data, 0, ((report->size - 1) >> 3) + 1);
1142        for (n = 0; n < report->maxfield; n++)
1143                hid_output_field(report->device, report->field[n], data);
1144}
1145EXPORT_SYMBOL_GPL(hid_output_report);
1146
1147/*
1148 * Set a field value. The report this field belongs to has to be
1149 * created and transferred to the device, to set this value in the
1150 * device.
1151 */
1152
1153int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1154{
1155        unsigned size = field->report_size;
1156
1157        hid_dump_input(field->report->device, field->usage + offset, value);
1158
1159        if (offset >= field->report_count) {
1160                hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1161                                offset, field->report_count);
1162                return -1;
1163        }
1164        if (field->logical_minimum < 0) {
1165                if (value != snto32(s32ton(value, size), size)) {
1166                        hid_err(field->report->device, "value %d is out of range\n", value);
1167                        return -1;
1168                }
1169        }
1170        field->value[offset] = value;
1171        return 0;
1172}
1173EXPORT_SYMBOL_GPL(hid_set_field);
1174
1175static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1176                const u8 *data)
1177{
1178        struct hid_report *report;
1179        unsigned int n = 0;     /* Normally report number is 0 */
1180
1181        /* Device uses numbered reports, data[0] is report number */
1182        if (report_enum->numbered)
1183                n = *data;
1184
1185        report = report_enum->report_id_hash[n];
1186        if (report == NULL)
1187                dbg_hid("undefined report_id %u received\n", n);
1188
1189        return report;
1190}
1191
1192int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1193                int interrupt)
1194{
1195        struct hid_report_enum *report_enum = hid->report_enum + type;
1196        struct hid_report *report;
1197        struct hid_driver *hdrv;
1198        unsigned int a;
1199        int rsize, csize = size;
1200        u8 *cdata = data;
1201        int ret = 0;
1202
1203        report = hid_get_report(report_enum, data);
1204        if (!report)
1205                goto out;
1206
1207        if (report_enum->numbered) {
1208                cdata++;
1209                csize--;
1210        }
1211
1212        rsize = ((report->size - 1) >> 3) + 1;
1213
1214        if (rsize > HID_MAX_BUFFER_SIZE)
1215                rsize = HID_MAX_BUFFER_SIZE;
1216
1217        if (csize < rsize) {
1218                dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1219                                csize, rsize);
1220                memset(cdata + csize, 0, rsize - csize);
1221        }
1222
1223        if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1224                hid->hiddev_report_event(hid, report);
1225        if (hid->claimed & HID_CLAIMED_HIDRAW) {
1226                ret = hidraw_report_event(hid, data, size);
1227                if (ret)
1228                        goto out;
1229        }
1230
1231        if (hid->claimed != HID_CLAIMED_HIDRAW) {
1232                for (a = 0; a < report->maxfield; a++)
1233                        hid_input_field(hid, report->field[a], cdata, interrupt);
1234                hdrv = hid->driver;
1235                if (hdrv && hdrv->report)
1236                        hdrv->report(hid, report);
1237        }
1238
1239        if (hid->claimed & HID_CLAIMED_INPUT)
1240                hidinput_report_event(hid, report);
1241out:
1242        return ret;
1243}
1244EXPORT_SYMBOL_GPL(hid_report_raw_event);
1245
1246/**
1247 * hid_input_report - report data from lower layer (usb, bt...)
1248 *
1249 * @hid: hid device
1250 * @type: HID report type (HID_*_REPORT)
1251 * @data: report contents
1252 * @size: size of data parameter
1253 * @interrupt: distinguish between interrupt and control transfers
1254 *
1255 * This is data entry for lower layers.
1256 */
1257int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1258{
1259        struct hid_report_enum *report_enum;
1260        struct hid_driver *hdrv;
1261        struct hid_report *report;
1262        int ret = 0;
1263
1264        if (!hid)
1265                return -ENODEV;
1266
1267        if (down_trylock(&hid->driver_input_lock))
1268                return -EBUSY;
1269
1270        if (!hid->driver) {
1271                ret = -ENODEV;
1272                goto unlock;
1273        }
1274        report_enum = hid->report_enum + type;
1275        hdrv = hid->driver;
1276
1277        if (!size) {
1278                dbg_hid("empty report\n");
1279                ret = -1;
1280                goto unlock;
1281        }
1282
1283        /* Avoid unnecessary overhead if debugfs is disabled */
1284        if (!list_empty(&hid->debug_list))
1285                hid_dump_report(hid, type, data, size);
1286
1287        report = hid_get_report(report_enum, data);
1288
1289        if (!report) {
1290                ret = -1;
1291                goto unlock;
1292        }
1293
1294        if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1295                ret = hdrv->raw_event(hid, report, data, size);
1296                if (ret < 0) {
1297                        ret = ret < 0 ? ret : 0;
1298                        goto unlock;
1299                }
1300        }
1301
1302        ret = hid_report_raw_event(hid, type, data, size, interrupt);
1303
1304unlock:
1305        up(&hid->driver_input_lock);
1306        return ret;
1307}
1308EXPORT_SYMBOL_GPL(hid_input_report);
1309
1310static bool hid_match_one_id(struct hid_device *hdev,
1311                const struct hid_device_id *id)
1312{
1313        return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1314                (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1315                (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1316                (id->product == HID_ANY_ID || id->product == hdev->product);
1317}
1318
1319const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1320                const struct hid_device_id *id)
1321{
1322        for (; id->bus; id++)
1323                if (hid_match_one_id(hdev, id))
1324                        return id;
1325
1326        return NULL;
1327}
1328
1329static const struct hid_device_id hid_hiddev_list[] = {
1330        { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1331        { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1332        { }
1333};
1334
1335static bool hid_hiddev(struct hid_device *hdev)
1336{
1337        return !!hid_match_id(hdev, hid_hiddev_list);
1338}
1339
1340
1341static ssize_t
1342read_report_descriptor(struct file *filp, struct kobject *kobj,
1343                struct bin_attribute *attr,
1344                char *buf, loff_t off, size_t count)
1345{
1346        struct device *dev = container_of(kobj, struct device, kobj);
1347        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1348
1349        if (off >= hdev->rsize)
1350                return 0;
1351
1352        if (off + count > hdev->rsize)
1353                count = hdev->rsize - off;
1354
1355        memcpy(buf, hdev->rdesc + off, count);
1356
1357        return count;
1358}
1359
1360static struct bin_attribute dev_bin_attr_report_desc = {
1361        .attr = { .name = "report_descriptor", .mode = 0444 },
1362        .read = read_report_descriptor,
1363        .size = HID_MAX_DESCRIPTOR_SIZE,
1364};
1365
1366int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1367{
1368        static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1369                "Joystick", "Gamepad", "Keyboard", "Keypad",
1370                "Multi-Axis Controller"
1371        };
1372        const char *type, *bus;
1373        char buf[64];
1374        unsigned int i;
1375        int len;
1376        int ret;
1377
1378        if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1379                connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1380        if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1381                connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1382        if (hdev->bus != BUS_USB)
1383                connect_mask &= ~HID_CONNECT_HIDDEV;
1384        if (hid_hiddev(hdev))
1385                connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1386
1387        if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1388                                connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1389                hdev->claimed |= HID_CLAIMED_INPUT;
1390
1391        if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1392                        !hdev->hiddev_connect(hdev,
1393                                connect_mask & HID_CONNECT_HIDDEV_FORCE))
1394                hdev->claimed |= HID_CLAIMED_HIDDEV;
1395        if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1396                hdev->claimed |= HID_CLAIMED_HIDRAW;
1397
1398        /* Drivers with the ->raw_event callback set are not required to connect
1399         * to any other listener. */
1400        if (!hdev->claimed && !hdev->driver->raw_event) {
1401                hid_err(hdev, "device has no listeners, quitting\n");
1402                return -ENODEV;
1403        }
1404
1405        if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1406                        (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1407                hdev->ff_init(hdev);
1408
1409        len = 0;
1410        if (hdev->claimed & HID_CLAIMED_INPUT)
1411                len += sprintf(buf + len, "input");
1412        if (hdev->claimed & HID_CLAIMED_HIDDEV)
1413                len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1414                                hdev->minor);
1415        if (hdev->claimed & HID_CLAIMED_HIDRAW)
1416                len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1417                                ((struct hidraw *)hdev->hidraw)->minor);
1418
1419        type = "Device";
1420        for (i = 0; i < hdev->maxcollection; i++) {
1421                struct hid_collection *col = &hdev->collection[i];
1422                if (col->type == HID_COLLECTION_APPLICATION &&
1423                   (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1424                   (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1425                        type = types[col->usage & 0xffff];
1426                        break;
1427                }
1428        }
1429
1430        switch (hdev->bus) {
1431        case BUS_USB:
1432                bus = "USB";
1433                break;
1434        case BUS_BLUETOOTH:
1435                bus = "BLUETOOTH";
1436                break;
1437        default:
1438                bus = "<UNKNOWN>";
1439        }
1440
1441        ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1442        if (ret)
1443                hid_warn(hdev,
1444                         "can't create sysfs report descriptor attribute err: %d\n", ret);
1445
1446        hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1447                 buf, bus, hdev->version >> 8, hdev->version & 0xff,
1448                 type, hdev->name, hdev->phys);
1449
1450        return 0;
1451}
1452EXPORT_SYMBOL_GPL(hid_connect);
1453
1454void hid_disconnect(struct hid_device *hdev)
1455{
1456        device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1457        if (hdev->claimed & HID_CLAIMED_INPUT)
1458                hidinput_disconnect(hdev);
1459        if (hdev->claimed & HID_CLAIMED_HIDDEV)
1460                hdev->hiddev_disconnect(hdev);
1461        if (hdev->claimed & HID_CLAIMED_HIDRAW)
1462                hidraw_disconnect(hdev);
1463}
1464EXPORT_SYMBOL_GPL(hid_disconnect);
1465
1466/*
1467 * A list of devices for which there is a specialized driver on HID bus.
1468 *
1469 * Please note that for multitouch devices (driven by hid-multitouch driver),
1470 * there is a proper autodetection and autoloading in place (based on presence
1471 * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1472 * as we are doing the right thing in hid_scan_usage().
1473 *
1474 * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1475 * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1476 * used as a driver. See hid_scan_report().
1477 */
1478static const struct hid_device_id hid_have_special_driver[] = {
1479        { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1480        { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1481        { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1482        { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1483        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1484        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1485        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1486        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1487        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1488        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1489        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1490        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1491        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1492        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1493        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1494        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1495        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1496        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1497        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1498        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1499        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1500        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1501        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1502        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1503        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1504        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1505        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1506        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1507        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1508        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1509        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1510        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1511        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1512        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1513        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1514        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1515        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1516        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1517        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1518        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1519        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1520        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1521        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1522        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1523        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1524        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1525        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1526        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1527        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1528        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1529        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1530        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1531        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1532        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1533        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1534        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1535        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1536        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1537        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1538        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1539        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1540        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1541        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1542        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1543        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1544        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1545        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1546        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1547        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1548        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1549        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1550        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1551        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1552        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1553        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1554        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1555        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1556        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1557        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1558        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1559        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1560        { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1561        { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1562        { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1563        { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1564        { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1565        { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1566        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1567        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1568        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1569        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1570        { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1571        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1572        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1573        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1574        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1575        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1576        { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1577        { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1578        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1579        { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
1580        { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
1581        { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1582        { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1583        { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1584        { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1585        { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1586        { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1587        { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1588        { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1589        { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1590        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1591        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1592        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
1593        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
1594        { HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_580) },
1595        { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1596        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1597        { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1598        { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1599        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
1600        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1601        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1602        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1603        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1604        { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1605        { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1606#if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
1607        { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1608#endif
1609        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1610        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1611        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1612        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1613        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1614        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1615        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1616        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1617        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1618        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1619        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1620        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1621        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1622        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1623        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1624        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1625        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1626        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1627        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1628        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1629        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1630        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1631        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1632        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1633        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1634#if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1635        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1636        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1637#endif
1638        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1639        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1640        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1641        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1642        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1643        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1644        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1645        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1646        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1647        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1648        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1649        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1650        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1651        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1652        { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1653        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1654        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1655        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1656        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1657        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1658        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1659        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1660        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1661        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1662        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1663        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1664        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1665        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1666        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1667        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1668        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1669        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1670        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1671        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1672        { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1673        { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1674        { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1675        { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1676#if IS_ENABLED(CONFIG_HID_ROCCAT)
1677        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1678        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1679        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1680        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1681        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
1682        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1683        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
1684        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1685        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1686        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1687#endif
1688        { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1689        { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1690        { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1691        { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1692        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
1693        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
1694        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1695        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1696        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1697        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1698        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1699        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
1700        { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
1701        { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1702        { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
1703        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1704        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1705        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1706        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1707        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1708        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1709        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1710        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1711        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1712        { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1713        { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1714        { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1715        { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1716        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1717        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1718        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1719        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1720        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1721        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1722        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1723        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1724        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1725        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1726        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1727        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1728        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1729        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1730        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
1731        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1732        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1733        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1734        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1735        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1736        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1737        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1738        { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1739        { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1740        { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1741        { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1742
1743        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1744        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1745        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1746        { }
1747};
1748
1749struct hid_dynid {
1750        struct list_head list;
1751        struct hid_device_id id;
1752};
1753
1754/**
1755 * store_new_id - add a new HID device ID to this driver and re-probe devices
1756 * @driver: target device driver
1757 * @buf: buffer for scanning device ID data
1758 * @count: input size
1759 *
1760 * Adds a new dynamic hid device ID to this driver,
1761 * and causes the driver to probe for all devices again.
1762 */
1763static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1764                size_t count)
1765{
1766        struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1767        struct hid_dynid *dynid;
1768        __u32 bus, vendor, product;
1769        unsigned long driver_data = 0;
1770        int ret;
1771
1772        ret = sscanf(buf, "%x %x %x %lx",
1773                        &bus, &vendor, &product, &driver_data);
1774        if (ret < 3)
1775                return -EINVAL;
1776
1777        dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1778        if (!dynid)
1779                return -ENOMEM;
1780
1781        dynid->id.bus = bus;
1782        dynid->id.group = HID_GROUP_ANY;
1783        dynid->id.vendor = vendor;
1784        dynid->id.product = product;
1785        dynid->id.driver_data = driver_data;
1786
1787        spin_lock(&hdrv->dyn_lock);
1788        list_add_tail(&dynid->list, &hdrv->dyn_list);
1789        spin_unlock(&hdrv->dyn_lock);
1790
1791        ret = driver_attach(&hdrv->driver);
1792
1793        return ret ? : count;
1794}
1795static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1796
1797static void hid_free_dynids(struct hid_driver *hdrv)
1798{
1799        struct hid_dynid *dynid, *n;
1800
1801        spin_lock(&hdrv->dyn_lock);
1802        list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1803                list_del(&dynid->list);
1804                kfree(dynid);
1805        }
1806        spin_unlock(&hdrv->dyn_lock);
1807}
1808
1809static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1810                struct hid_driver *hdrv)
1811{
1812        struct hid_dynid *dynid;
1813
1814        spin_lock(&hdrv->dyn_lock);
1815        list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1816                if (hid_match_one_id(hdev, &dynid->id)) {
1817                        spin_unlock(&hdrv->dyn_lock);
1818                        return &dynid->id;
1819                }
1820        }
1821        spin_unlock(&hdrv->dyn_lock);
1822
1823        return hid_match_id(hdev, hdrv->id_table);
1824}
1825
1826static int hid_bus_match(struct device *dev, struct device_driver *drv)
1827{
1828        struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1829        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1830
1831        return hid_match_device(hdev, hdrv) != NULL;
1832}
1833
1834static int hid_device_probe(struct device *dev)
1835{
1836        struct hid_driver *hdrv = container_of(dev->driver,
1837                        struct hid_driver, driver);
1838        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1839        const struct hid_device_id *id;
1840        int ret = 0;
1841
1842        if (down_interruptible(&hdev->driver_lock))
1843                return -EINTR;
1844        if (down_interruptible(&hdev->driver_input_lock)) {
1845                ret = -EINTR;
1846                goto unlock_driver_lock;
1847        }
1848        hdev->io_started = false;
1849
1850        if (!hdev->driver) {
1851                id = hid_match_device(hdev, hdrv);
1852                if (id == NULL) {
1853                        ret = -ENODEV;
1854                        goto unlock;
1855                }
1856
1857                hdev->driver = hdrv;
1858                if (hdrv->probe) {
1859                        ret = hdrv->probe(hdev, id);
1860                } else { /* default probe */
1861                        ret = hid_open_report(hdev);
1862                        if (!ret)
1863                                ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1864                }
1865                if (ret) {
1866                        hid_close_report(hdev);
1867                        hdev->driver = NULL;
1868                }
1869        }
1870unlock:
1871        if (!hdev->io_started)
1872                up(&hdev->driver_input_lock);
1873unlock_driver_lock:
1874        up(&hdev->driver_lock);
1875        return ret;
1876}
1877
1878static int hid_device_remove(struct device *dev)
1879{
1880        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1881        struct hid_driver *hdrv;
1882        int ret = 0;
1883
1884        if (down_interruptible(&hdev->driver_lock))
1885                return -EINTR;
1886        if (down_interruptible(&hdev->driver_input_lock)) {
1887                ret = -EINTR;
1888                goto unlock_driver_lock;
1889        }
1890        hdev->io_started = false;
1891
1892        hdrv = hdev->driver;
1893        if (hdrv) {
1894                if (hdrv->remove)
1895                        hdrv->remove(hdev);
1896                else /* default remove */
1897                        hid_hw_stop(hdev);
1898                hid_close_report(hdev);
1899                hdev->driver = NULL;
1900        }
1901
1902        if (!hdev->io_started)
1903                up(&hdev->driver_input_lock);
1904unlock_driver_lock:
1905        up(&hdev->driver_lock);
1906        return ret;
1907}
1908
1909static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
1910                             char *buf)
1911{
1912        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1913        int len;
1914
1915        len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
1916                       hdev->bus, hdev->group, hdev->vendor, hdev->product);
1917
1918        return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
1919}
1920
1921static struct device_attribute hid_dev_attrs[] = {
1922        __ATTR_RO(modalias),
1923        __ATTR_NULL,
1924};
1925
1926static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1927{
1928        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1929
1930        if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
1931                        hdev->bus, hdev->vendor, hdev->product))
1932                return -ENOMEM;
1933
1934        if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
1935                return -ENOMEM;
1936
1937        if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
1938                return -ENOMEM;
1939
1940        if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
1941                return -ENOMEM;
1942
1943        if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
1944                           hdev->bus, hdev->group, hdev->vendor, hdev->product))
1945                return -ENOMEM;
1946
1947        return 0;
1948}
1949
1950static struct bus_type hid_bus_type = {
1951        .name           = "hid",
1952        .dev_attrs      = hid_dev_attrs,
1953        .match          = hid_bus_match,
1954        .probe          = hid_device_probe,
1955        .remove         = hid_device_remove,
1956        .uevent         = hid_uevent,
1957};
1958
1959/* a list of devices that shouldn't be handled by HID core at all */
1960static const struct hid_device_id hid_ignore_list[] = {
1961        { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
1962        { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
1963        { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
1964        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
1965        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
1966        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
1967        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
1968        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
1969        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
1970        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
1971        { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
1972        { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
1973        { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
1974        { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
1975        { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
1976        { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
1977        { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
1978        { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
1979        { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
1980        { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
1981        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
1982        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
1983        { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
1984        { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
1985        { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
1986        { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
1987        { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
1988        { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
1989        { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
1990        { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
1991        { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
1992        { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
1993        { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
1994        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
1995        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
1996        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
1997        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
1998        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
1999        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
2000        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
2001        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
2002        { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2003        { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2004        { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2005        { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2006        { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2007        { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2008        { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2009        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2010        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2011        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2012        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2013        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2014        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2015        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2016        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2017        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2018        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2019        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2020        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2021        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2022        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2023        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2024        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2025        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2026        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2027        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2028        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2029        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2030        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2031        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2032        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2033        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2034        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2035        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2036        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2037        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2038        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2039        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2040        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2041        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2042        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2043        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2044        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2045        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2046        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2047        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2048        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2049        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2050        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2051        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2052        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2053        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2054        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2055        { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2056        { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
2057        { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
2058        { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2059        { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2060        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2061        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2062        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2063        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2064        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2065        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2066        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2067        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2068        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2069        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2070        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2071        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2072        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2073        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2074        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2075        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2076        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2077        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2078        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2079        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2080        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2081        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2082        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2083        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2084        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2085        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2086        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2087        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2088        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2089        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2090        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2091        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2092        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2093        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2094        { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2095        { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2096        { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2097        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2098        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2099        { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2100        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2101        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2102        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2103        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2104        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2105        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2106        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2107        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2108        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2109        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2110        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2111        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2112        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2113        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2114        { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2115        { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2116#if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2117        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2118        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2119        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2120        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2121        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2122        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2123        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2124        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2125#endif
2126        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2127        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2128        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2129        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2130        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2131        { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
2132        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2133        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2134        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2135        { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2136        { }
2137};
2138
2139/**
2140 * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2141 *
2142 * There are composite devices for which we want to ignore only a certain
2143 * interface. This is a list of devices for which only the mouse interface will
2144 * be ignored. This allows a dedicated driver to take care of the interface.
2145 */
2146static const struct hid_device_id hid_mouse_ignore_list[] = {
2147        /* appletouch driver */
2148        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2149        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2150        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2151        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2152        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2153        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2154        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2155        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2156        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2157        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2158        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2159        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2160        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2161        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2162        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2163        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2164        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2165        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2166        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2167        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2168        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2169        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2170        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2171        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2172        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2173        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2174        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2175        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2176        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2177        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2178        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2179        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2180        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2181        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2182        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2183        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2184        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2185        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2186        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2187        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2188        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2189        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2190        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2191        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2192        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2193        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2194        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2195        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2196        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2197        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2198        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2199        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2200        { }
2201};
2202
2203bool hid_ignore(struct hid_device *hdev)
2204{
2205        if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2206                return false;
2207        if (hdev->quirks & HID_QUIRK_IGNORE)
2208                return true;
2209
2210        switch (hdev->vendor) {
2211        case USB_VENDOR_ID_CODEMERCS:
2212                /* ignore all Code Mercenaries IOWarrior devices */
2213                if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2214                                hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2215                        return true;
2216                break;
2217        case USB_VENDOR_ID_LOGITECH:
2218                if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2219                                hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2220                        return true;
2221                /*
2222                 * The Keene FM transmitter USB device has the same USB ID as
2223                 * the Logitech AudioHub Speaker, but it should ignore the hid.
2224                 * Check if the name is that of the Keene device.
2225                 * For reference: the name of the AudioHub is
2226                 * "HOLTEK  AudioHub Speaker".
2227                 */
2228                if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2229                        !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2230                                return true;
2231                break;
2232        case USB_VENDOR_ID_SOUNDGRAPH:
2233                if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2234                    hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2235                        return true;
2236                break;
2237        case USB_VENDOR_ID_HANWANG:
2238                if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2239                    hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2240                        return true;
2241                break;
2242        case USB_VENDOR_ID_JESS:
2243                if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2244                                hdev->type == HID_TYPE_USBNONE)
2245                        return true;
2246                break;
2247        case USB_VENDOR_ID_DWAV:
2248                /* These are handled by usbtouchscreen. hdev->type is probably
2249                 * HID_TYPE_USBNONE, but we say !HID_TYPE_USBMOUSE to match
2250                 * usbtouchscreen. */
2251                if ((hdev->product == USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER ||
2252                     hdev->product == USB_DEVICE_ID_DWAV_TOUCHCONTROLLER) &&
2253                    hdev->type != HID_TYPE_USBMOUSE)
2254                        return true;
2255                break;
2256        case USB_VENDOR_ID_VELLEMAN:
2257                /* These are not HID devices.  They are handled by comedi. */
2258                if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2259                     hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2260                    (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2261                     hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2262                        return true;
2263                break;
2264        case USB_VENDOR_ID_ATMEL_V_USB:
2265                /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2266                 * it has the same USB ID as many Atmel V-USB devices. This
2267                 * usb radio is handled by radio-ma901.c driver so we want
2268                 * ignore the hid. Check the name, bus, product and ignore
2269                 * if we have MA901 usb radio.
2270                 */
2271                if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2272                        hdev->bus == BUS_USB &&
2273                        strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2274                        return true;
2275                break;
2276        }
2277
2278        if (hdev->type == HID_TYPE_USBMOUSE &&
2279                        hid_match_id(hdev, hid_mouse_ignore_list))
2280                return true;
2281
2282        return !!hid_match_id(hdev, hid_ignore_list);
2283}
2284EXPORT_SYMBOL_GPL(hid_ignore);
2285
2286int hid_add_device(struct hid_device *hdev)
2287{
2288        static atomic_t id = ATOMIC_INIT(0);
2289        int ret;
2290
2291        if (WARN_ON(hdev->status & HID_STAT_ADDED))
2292                return -EBUSY;
2293
2294        /* we need to kill them here, otherwise they will stay allocated to
2295         * wait for coming driver */
2296        if (hid_ignore(hdev))
2297                return -ENODEV;
2298
2299        /*
2300         * Read the device report descriptor once and use as template
2301         * for the driver-specific modifications.
2302         */
2303        ret = hdev->ll_driver->parse(hdev);
2304        if (ret)
2305                return ret;
2306        if (!hdev->dev_rdesc)
2307                return -ENODEV;
2308
2309        /*
2310         * Scan generic devices for group information
2311         */
2312        if (hid_ignore_special_drivers ||
2313            !hid_match_id(hdev, hid_have_special_driver)) {
2314                ret = hid_scan_report(hdev);
2315                if (ret)
2316                        hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2317        }
2318
2319        /* XXX hack, any other cleaner solution after the driver core
2320         * is converted to allow more than 20 bytes as the device name? */
2321        dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2322                     hdev->vendor, hdev->product, atomic_inc_return(&id));
2323
2324        hid_debug_register(hdev, dev_name(&hdev->dev));
2325        ret = device_add(&hdev->dev);
2326        if (!ret)
2327                hdev->status |= HID_STAT_ADDED;
2328        else
2329                hid_debug_unregister(hdev);
2330
2331        return ret;
2332}
2333EXPORT_SYMBOL_GPL(hid_add_device);
2334
2335/**
2336 * hid_allocate_device - allocate new hid device descriptor
2337 *
2338 * Allocate and initialize hid device, so that hid_destroy_device might be
2339 * used to free it.
2340 *
2341 * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2342 * error value.
2343 */
2344struct hid_device *hid_allocate_device(void)
2345{
2346        struct hid_device *hdev;
2347        int ret = -ENOMEM;
2348
2349        hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2350        if (hdev == NULL)
2351                return ERR_PTR(ret);
2352
2353        device_initialize(&hdev->dev);
2354        hdev->dev.release = hid_device_release;
2355        hdev->dev.bus = &hid_bus_type;
2356
2357        hid_close_report(hdev);
2358
2359        init_waitqueue_head(&hdev->debug_wait);
2360        INIT_LIST_HEAD(&hdev->debug_list);
2361        spin_lock_init(&hdev->debug_list_lock);
2362        sema_init(&hdev->driver_lock, 1);
2363        sema_init(&hdev->driver_input_lock, 1);
2364
2365        return hdev;
2366}
2367EXPORT_SYMBOL_GPL(hid_allocate_device);
2368
2369static void hid_remove_device(struct hid_device *hdev)
2370{
2371        if (hdev->status & HID_STAT_ADDED) {
2372                device_del(&hdev->dev);
2373                hid_debug_unregister(hdev);
2374                hdev->status &= ~HID_STAT_ADDED;
2375        }
2376        kfree(hdev->dev_rdesc);
2377        hdev->dev_rdesc = NULL;
2378        hdev->dev_rsize = 0;
2379}
2380
2381/**
2382 * hid_destroy_device - free previously allocated device
2383 *
2384 * @hdev: hid device
2385 *
2386 * If you allocate hid_device through hid_allocate_device, you should ever
2387 * free by this function.
2388 */
2389void hid_destroy_device(struct hid_device *hdev)
2390{
2391        hid_remove_device(hdev);
2392        put_device(&hdev->dev);
2393}
2394EXPORT_SYMBOL_GPL(hid_destroy_device);
2395
2396int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2397                const char *mod_name)
2398{
2399        int ret;
2400
2401        hdrv->driver.name = hdrv->name;
2402        hdrv->driver.bus = &hid_bus_type;
2403        hdrv->driver.owner = owner;
2404        hdrv->driver.mod_name = mod_name;
2405
2406        INIT_LIST_HEAD(&hdrv->dyn_list);
2407        spin_lock_init(&hdrv->dyn_lock);
2408
2409        ret = driver_register(&hdrv->driver);
2410        if (ret)
2411                return ret;
2412
2413        ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2414        if (ret)
2415                driver_unregister(&hdrv->driver);
2416
2417        return ret;
2418}
2419EXPORT_SYMBOL_GPL(__hid_register_driver);
2420
2421void hid_unregister_driver(struct hid_driver *hdrv)
2422{
2423        driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2424        driver_unregister(&hdrv->driver);
2425        hid_free_dynids(hdrv);
2426}
2427EXPORT_SYMBOL_GPL(hid_unregister_driver);
2428
2429int hid_check_keys_pressed(struct hid_device *hid)
2430{
2431        struct hid_input *hidinput;
2432        int i;
2433
2434        if (!(hid->claimed & HID_CLAIMED_INPUT))
2435                return 0;
2436
2437        list_for_each_entry(hidinput, &hid->inputs, list) {
2438                for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2439                        if (hidinput->input->key[i])
2440                                return 1;
2441        }
2442
2443        return 0;
2444}
2445
2446EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2447
2448static int __init hid_init(void)
2449{
2450        int ret;
2451
2452        if (hid_debug)
2453                pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2454                        "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2455
2456        ret = bus_register(&hid_bus_type);
2457        if (ret) {
2458                pr_err("can't register hid bus\n");
2459                goto err;
2460        }
2461
2462        ret = hidraw_init();
2463        if (ret)
2464                goto err_bus;
2465
2466        hid_debug_init();
2467
2468        return 0;
2469err_bus:
2470        bus_unregister(&hid_bus_type);
2471err:
2472        return ret;
2473}
2474
2475static void __exit hid_exit(void)
2476{
2477        hid_debug_exit();
2478        hidraw_exit();
2479        bus_unregister(&hid_bus_type);
2480}
2481
2482module_init(hid_init);
2483module_exit(hid_exit);
2484
2485MODULE_AUTHOR("Andreas Gal");
2486MODULE_AUTHOR("Vojtech Pavlik");
2487MODULE_AUTHOR("Jiri Kosina");
2488MODULE_LICENSE(DRIVER_LICENSE);
2489
2490
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