drivers/hid/hid-core.c

   1 /*
   2  *  HID support for Linux
   3  *
   4  *  Copyright (c) 1999 Andreas Gal
   5  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
   6  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
   7  *  Copyright (c) 2006-2012 Jiri Kosina
   8  */
   9
  10 /*
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the Free
  13  * Software Foundation; either version 2 of the License, or (at your option)
  14  * any later version.
  15  */
  16
  17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  18
  19 #include <linux/module.h>
  20 #include <linux/slab.h>
  21 #include <linux/init.h>
  22 #include <linux/kernel.h>
  23 #include <linux/list.h>
  24 #include <linux/mm.h>
  25 #include <linux/spinlock.h>
  26 #include <asm/unaligned.h>
  27 #include <asm/byteorder.h>
  28 #include <linux/input.h>
  29 #include <linux/wait.h>
  30 #include <linux/vmalloc.h>
  31 #include <linux/sched.h>
  32 #include <linux/semaphore.h>
  33
  34 #include <linux/hid.h>
  35 #include <linux/hiddev.h>
  36 #include <linux/hid-debug.h>
  37 #include <linux/hidraw.h>
  38
  39 #include "hid-ids.h"
  40
  41 /*
  42  * Version Information
  43  */
  44
  45 #define DRIVER_DESC "HID core driver"
  46 #define DRIVER_LICENSE "GPL"
  47
  48 int hid_debug = 0;
  49 module_param_named(debug, hid_debug, int, 0600);
  50 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
  51 EXPORT_SYMBOL_GPL(hid_debug);
  52
  53 static int hid_ignore_special_drivers = 0;
  54 module_param_named(ignore_special_drivers, hid_ignore_special_drivers, int, 0600);
  55 MODULE_PARM_DESC(ignore_special_drivers, "Ignore any special drivers and handle all devices by generic driver");
  56
  57 /*
  58  * Register a new report for a device.
  59  */
  60
  61 struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
  62 {
  63         struct hid_report_enum *report_enum = device->report_enum + type;
  64         struct hid_report *report;
  65
  66         if (id >= HID_MAX_IDS)
  67                 return NULL;
  68         if (report_enum->report_id_hash[id])
  69                 return report_enum->report_id_hash[id];
  70
  71         report = kzalloc(sizeof(struct hid_report), GFP_KERNEL);
  72         if (!report)
  73                 return NULL;
  74
  75         if (id != 0)
  76                 report_enum->numbered = 1;
  77
  78         report->id = id;
  79         report->type = type;
  80         report->size = 0;
  81         report->device = device;
  82         report_enum->report_id_hash[id] = report;
  83
  84         list_add_tail(&report->list, &report_enum->report_list);
  85
  86         return report;
  87 }
  88 EXPORT_SYMBOL_GPL(hid_register_report);
  89
  90 /*
  91  * Register a new field for this report.
  92  */
  93
  94 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages)
  95 {
  96         struct hid_field *field;
  97
  98         if (report->maxfield == HID_MAX_FIELDS) {
  99                 hid_err(report->device, "too many fields in report\n");
 100                 return NULL;
 101         }
 102
 103         field = kzalloc((sizeof(struct hid_field) +
 104                          usages * sizeof(struct hid_usage) +
 105                          usages * sizeof(unsigned)), GFP_KERNEL);
 106         if (!field)
 107                 return NULL;
 108
 109         field->index = report->maxfield++;
 110         report->field[field->index] = field;
 111         field->usage = (struct hid_usage *)(field + 1);
 112         field->value = (s32 *)(field->usage + usages);
 113         field->report = report;
 114
 115         return field;
 116 }
 117
 118 /*
 119  * Open a collection. The type/usage is pushed on the stack.
 120  */
 121
 122 static int open_collection(struct hid_parser *parser, unsigned type)
 123 {
 124         struct hid_collection *collection;
 125         unsigned usage;
 126
 127         usage = parser->local.usage[0];
 128
 129         if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
 130                 hid_err(parser->device, "collection stack overflow\n");
 131                 return -EINVAL;
 132         }
 133
 134         if (parser->device->maxcollection == parser->device->collection_size) {
 135                 collection = kmalloc(sizeof(struct hid_collection) *
 136                                 parser->device->collection_size * 2, GFP_KERNEL);
 137                 if (collection == NULL) {
 138                         hid_err(parser->device, "failed to reallocate collection array\n");
 139                         return -ENOMEM;
 140                 }
 141                 memcpy(collection, parser->device->collection,
 142                         sizeof(struct hid_collection) *
 143                         parser->device->collection_size);
 144                 memset(collection + parser->device->collection_size, 0,
 145                         sizeof(struct hid_collection) *
 146                         parser->device->collection_size);
 147                 kfree(parser->device->collection);
 148                 parser->device->collection = collection;
 149                 parser->device->collection_size *= 2;
 150         }
 151
 152         parser->collection_stack[parser->collection_stack_ptr++] =
 153                 parser->device->maxcollection;
 154
 155         collection = parser->device->collection +
 156                 parser->device->maxcollection++;
 157         collection->type = type;
 158         collection->usage = usage;
 159         collection->level = parser->collection_stack_ptr - 1;
 160
 161         if (type == HID_COLLECTION_APPLICATION)
 162                 parser->device->maxapplication++;
 163
 164         return 0;
 165 }
 166
 167 /*
 168  * Close a collection.
 169  */
 170
 171 static int close_collection(struct hid_parser *parser)
 172 {
 173         if (!parser->collection_stack_ptr) {
 174                 hid_err(parser->device, "collection stack underflow\n");
 175                 return -EINVAL;
 176         }
 177         parser->collection_stack_ptr--;
 178         return 0;
 179 }
 180
 181 /*
 182  * Climb up the stack, search for the specified collection type
 183  * and return the usage.
 184  */
 185
 186 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
 187 {
 188         struct hid_collection *collection = parser->device->collection;
 189         int n;
 190
 191         for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
 192                 unsigned index = parser->collection_stack[n];
 193                 if (collection[index].type == type)
 194                         return collection[index].usage;
 195         }
 196         return 0; /* we know nothing about this usage type */
 197 }
 198
 199 /*
 200  * Concatenate usage which defines 16 bits or less with the
 201  * currently defined usage page to form a 32 bit usage
 202  */
 203
 204 static void complete_usage(struct hid_parser *parser, unsigned int index)
 205 {
 206         parser->local.usage[index] &= 0xFFFF;
 207         parser->local.usage[index] |=
 208                 (parser->global.usage_page & 0xFFFF) << 16;
 209 }
 210
 211 /*
 212  * Add a usage to the temporary parser table.
 213  */
 214
 215 static int hid_add_usage(struct hid_parser *parser, unsigned usage, u8 size)
 216 {
 217         if (parser->local.usage_index >= HID_MAX_USAGES) {
 218                 hid_err(parser->device, "usage index exceeded\n");
 219                 return -1;
 220         }
 221         parser->local.usage[parser->local.usage_index] = usage;
 222
 223         /*
 224          * If Usage item only includes usage id, concatenate it with
 225          * currently defined usage page
 226          */
 227         if (size <= 2)
 228                 complete_usage(parser, parser->local.usage_index);
 229
 230         parser->local.usage_size[parser->local.usage_index] = size;
 231         parser->local.collection_index[parser->local.usage_index] =
 232                 parser->collection_stack_ptr ?
 233                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
 234         parser->local.usage_index++;
 235         return 0;
 236 }
 237
 238 /*
 239  * Register a new field for this report.
 240  */
 241
 242 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
 243 {
 244         struct hid_report *report;
 245         struct hid_field *field;
 246         unsigned usages;
 247         unsigned offset;
 248         unsigned i;
 249
 250         report = hid_register_report(parser->device, report_type, parser->global.report_id);
 251         if (!report) {
 252                 hid_err(parser->device, "hid_register_report failed\n");
 253                 return -1;
 254         }
 255
 256         /* Handle both signed and unsigned cases properly */
 257         if ((parser->global.logical_minimum < 0 &&
 258                 parser->global.logical_maximum <
 259                 parser->global.logical_minimum) ||
 260                 (parser->global.logical_minimum >= 0 &&
 261                 (__u32)parser->global.logical_maximum <
 262                 (__u32)parser->global.logical_minimum)) {
 263                 dbg_hid("logical range invalid 0x%x 0x%x\n",
 264                         parser->global.logical_minimum,
 265                         parser->global.logical_maximum);
 266                 return -1;
 267         }
 268
 269         offset = report->size;
 270         report->size += parser->global.report_size * parser->global.report_count;
 271
 272         /* Total size check: Allow for possible report index byte */
 273         if (report->size > (HID_MAX_BUFFER_SIZE - 1) << 3) {
 274                 hid_err(parser->device, "report is too long\n");
 275                 return -1;
 276         }
 277
 278         if (!parser->local.usage_index) /* Ignore padding fields */
 279                 return 0;
 280
 281         usages = max_t(unsigned, parser->local.usage_index,
 282                                  parser->global.report_count);
 283
 284         field = hid_register_field(report, usages);
 285         if (!field)
 286                 return 0;
 287
 288         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
 289         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
 290         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
 291
 292         for (i = 0; i < usages; i++) {
 293                 unsigned j = i;
 294                 /* Duplicate the last usage we parsed if we have excess values */
 295                 if (i >= parser->local.usage_index)
 296                         j = parser->local.usage_index - 1;
 297                 field->usage[i].hid = parser->local.usage[j];
 298                 field->usage[i].collection_index =
 299                         parser->local.collection_index[j];
 300                 field->usage[i].usage_index = i;
 301         }
 302
 303         field->maxusage = usages;
 304         field->flags = flags;
 305         field->report_offset = offset;
 306         field->report_type = report_type;
 307         field->report_size = parser->global.report_size;
 308         field->report_count = parser->global.report_count;
 309         field->logical_minimum = parser->global.logical_minimum;
 310         field->logical_maximum = parser->global.logical_maximum;
 311         field->physical_minimum = parser->global.physical_minimum;
 312         field->physical_maximum = parser->global.physical_maximum;
 313         field->unit_exponent = parser->global.unit_exponent;
 314         field->unit = parser->global.unit;
 315
 316         return 0;
 317 }
 318
 319 /*
 320  * Read data value from item.
 321  */
 322
 323 static u32 item_udata(struct hid_item *item)
 324 {
 325         switch (item->size) {
 326         case 1: return item->data.u8;
 327         case 2: return item->data.u16;
 328         case 4: return item->data.u32;
 329         }
 330         return 0;
 331 }
 332
 333 static s32 item_sdata(struct hid_item *item)
 334 {
 335         switch (item->size) {
 336         case 1: return item->data.s8;
 337         case 2: return item->data.s16;
 338         case 4: return item->data.s32;
 339         }
 340         return 0;
 341 }
 342
 343 /*
 344  * Process a global item.
 345  */
 346
 347 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
 348 {
 349         __s32 raw_value;
 350         switch (item->tag) {
 351         case HID_GLOBAL_ITEM_TAG_PUSH:
 352
 353                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
 354                         hid_err(parser->device, "global environment stack overflow\n");
 355                         return -1;
 356                 }
 357
 358                 memcpy(parser->global_stack + parser->global_stack_ptr++,
 359                         &parser->global, sizeof(struct hid_global));
 360                 return 0;
 361
 362         case HID_GLOBAL_ITEM_TAG_POP:
 363
 364                 if (!parser->global_stack_ptr) {
 365                         hid_err(parser->device, "global environment stack underflow\n");
 366                         return -1;
 367                 }
 368
 369                 memcpy(&parser->global, parser->global_stack +
 370                         --parser->global_stack_ptr, sizeof(struct hid_global));
 371                 return 0;
 372
 373         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
 374                 parser->global.usage_page = item_udata(item);
 375                 return 0;
 376
 377         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
 378                 parser->global.logical_minimum = item_sdata(item);
 379                 return 0;
 380
 381         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
 382                 if (parser->global.logical_minimum < 0)
 383                         parser->global.logical_maximum = item_sdata(item);
 384                 else
 385                         parser->global.logical_maximum = item_udata(item);
 386                 return 0;
 387
 388         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
 389                 parser->global.physical_minimum = item_sdata(item);
 390                 return 0;
 391
 392         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
 393                 if (parser->global.physical_minimum < 0)
 394                         parser->global.physical_maximum = item_sdata(item);
 395                 else
 396                         parser->global.physical_maximum = item_udata(item);
 397                 return 0;
 398
 399         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
 400                 /* Many devices provide unit exponent as a two's complement
 401                  * nibble due to the common misunderstanding of HID
 402                  * specification 1.11, 6.2.2.7 Global Items. Attempt to handle
 403                  * both this and the standard encoding. */
 404                 raw_value = item_sdata(item);
 405                 if (!(raw_value & 0xfffffff0))
 406                         parser->global.unit_exponent = hid_snto32(raw_value, 4);
 407                 else
 408                         parser->global.unit_exponent = raw_value;
 409                 return 0;
 410
 411         case HID_GLOBAL_ITEM_TAG_UNIT:
 412                 parser->global.unit = item_udata(item);
 413                 return 0;
 414
 415         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
 416                 parser->global.report_size = item_udata(item);
 417                 if (parser->global.report_size > 128) {
 418                         hid_err(parser->device, "invalid report_size %d\n",
 419                                         parser->global.report_size);
 420                         return -1;
 421                 }
 422                 return 0;
 423
 424         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
 425                 parser->global.report_count = item_udata(item);
 426                 if (parser->global.report_count > HID_MAX_USAGES) {
 427                         hid_err(parser->device, "invalid report_count %d\n",
 428                                         parser->global.report_count);
 429                         return -1;
 430                 }
 431                 return 0;
 432
 433         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
 434                 parser->global.report_id = item_udata(item);
 435                 if (parser->global.report_id == 0 ||
 436                     parser->global.report_id >= HID_MAX_IDS) {
 437                         hid_err(parser->device, "report_id %u is invalid\n",
 438                                 parser->global.report_id);
 439                         return -1;
 440                 }
 441                 return 0;
 442
 443         default:
 444                 hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
 445                 return -1;
 446         }
 447 }
 448
 449 /*
 450  * Process a local item.
 451  */
 452
 453 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 454 {
 455         __u32 data;
 456         unsigned n;
 457         __u32 count;
 458
 459         data = item_udata(item);
 460
 461         switch (item->tag) {
 462         case HID_LOCAL_ITEM_TAG_DELIMITER:
 463
 464                 if (data) {
 465                         /*
 466                          * We treat items before the first delimiter
 467                          * as global to all usage sets (branch 0).
 468                          * In the moment we process only these global
 469                          * items and the first delimiter set.
 470                          */
 471                         if (parser->local.delimiter_depth != 0) {
 472                                 hid_err(parser->device, "nested delimiters\n");
 473                                 return -1;
 474                         }
 475                         parser->local.delimiter_depth++;
 476                         parser->local.delimiter_branch++;
 477                 } else {
 478                         if (parser->local.delimiter_depth < 1) {
 479                                 hid_err(parser->device, "bogus close delimiter\n");
 480                                 return -1;
 481                         }
 482                         parser->local.delimiter_depth--;
 483                 }
 484                 return 0;
 485
 486         case HID_LOCAL_ITEM_TAG_USAGE:
 487
 488                 if (parser->local.delimiter_branch > 1) {
 489                         dbg_hid("alternative usage ignored\n");
 490                         return 0;
 491                 }
 492
 493                 return hid_add_usage(parser, data, item->size);
 494
 495         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 496
 497                 if (parser->local.delimiter_branch > 1) {
 498                         dbg_hid("alternative usage ignored\n");
 499                         return 0;
 500                 }
 501
 502                 parser->local.usage_minimum = data;
 503                 return 0;
 504
 505         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 506
 507                 if (parser->local.delimiter_branch > 1) {
 508                         dbg_hid("alternative usage ignored\n");
 509                         return 0;
 510                 }
 511
 512                 count = data - parser->local.usage_minimum;
 513                 if (count + parser->local.usage_index >= HID_MAX_USAGES) {
 514                         /*
 515                          * We do not warn if the name is not set, we are
 516                          * actually pre-scanning the device.
 517                          */
 518                         if (dev_name(&parser->device->dev))
 519                                 hid_warn(parser->device,
 520                                          "ignoring exceeding usage max\n");
 521                         data = HID_MAX_USAGES - parser->local.usage_index +
 522                                 parser->local.usage_minimum - 1;
 523                         if (data <= 0) {
 524                                 hid_err(parser->device,
 525                                         "no more usage index available\n");
 526                                 return -1;
 527                         }
 528                 }
 529
 530                 for (n = parser->local.usage_minimum; n <= data; n++)
 531                         if (hid_add_usage(parser, n, item->size)) {
 532                                 dbg_hid("hid_add_usage failed\n");
 533                                 return -1;
 534                         }
 535                 return 0;
 536
 537         default:
 538
 539                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
 540                 return 0;
 541         }
 542         return 0;
 543 }
 544
 545 /*
 546  * Concatenate Usage Pages into Usages where relevant:
 547  * As per specification, 6.2.2.8: "When the parser encounters a main item it
 548  * concatenates the last declared Usage Page with a Usage to form a complete
 549  * usage value."
 550  */
 551
 552 static void hid_concatenate_last_usage_page(struct hid_parser *parser)
 553 {
 554         int i;
 555         unsigned int usage_page;
 556         unsigned int current_page;
 557
 558         if (!parser->local.usage_index)
 559                 return;
 560
 561         usage_page = parser->global.usage_page;
 562
 563         /*
 564          * Concatenate usage page again only if last declared Usage Page
 565          * has not been already used in previous usages concatenation
 566          */
 567         for (i = parser->local.usage_index - 1; i >= 0; i--) {
 568                 if (parser->local.usage_size[i] > 2)
 569                         /* Ignore extended usages */
 570                         continue;
 571
 572                 current_page = parser->local.usage[i] >> 16;
 573                 if (current_page == usage_page)
 574                         break;
 575
 576                 complete_usage(parser, i);
 577         }
 578 }
 579
 580 /*
 581  * Process a main item.
 582  */
 583
 584 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
 585 {
 586         __u32 data;
 587         int ret;
 588
 589         hid_concatenate_last_usage_page(parser);
 590
 591         data = item_udata(item);
 592
 593         switch (item->tag) {
 594         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 595                 ret = open_collection(parser, data & 0xff);
 596                 break;
 597         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 598                 ret = close_collection(parser);
 599                 break;
 600         case HID_MAIN_ITEM_TAG_INPUT:
 601                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
 602                 break;
 603         case HID_MAIN_ITEM_TAG_OUTPUT:
 604                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
 605                 break;
 606         case HID_MAIN_ITEM_TAG_FEATURE:
 607                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
 608                 break;
 609         default:
 610                 hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
 611                 ret = 0;
 612         }
 613
 614         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
 615
 616         return ret;
 617 }
 618
 619 /*
 620  * Process a reserved item.
 621  */
 622
 623 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
 624 {
 625         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
 626         return 0;
 627 }
 628
 629 /*
 630  * Free a report and all registered fields. The field->usage and
 631  * field->value table's are allocated behind the field, so we need
 632  * only to free(field) itself.
 633  */
 634
 635 static void hid_free_report(struct hid_report *report)
 636 {
 637         unsigned n;
 638
 639         for (n = 0; n < report->maxfield; n++)
 640                 kfree(report->field[n]);
 641         kfree(report);
 642 }
 643
 644 /*
 645  * Close report. This function returns the device
 646  * state to the point prior to hid_open_report().
 647  */
 648 static void hid_close_report(struct hid_device *device)
 649 {
 650         unsigned i, j;
 651
 652         for (i = 0; i < HID_REPORT_TYPES; i++) {
 653                 struct hid_report_enum *report_enum = device->report_enum + i;
 654
 655                 for (j = 0; j < HID_MAX_IDS; j++) {
 656                         struct hid_report *report = report_enum->report_id_hash[j];
 657                         if (report)
 658                                 hid_free_report(report);
 659                 }
 660                 memset(report_enum, 0, sizeof(*report_enum));
 661                 INIT_LIST_HEAD(&report_enum->report_list);
 662         }
 663
 664         kfree(device->rdesc);
 665         device->rdesc = NULL;
 666         device->rsize = 0;
 667
 668         kfree(device->collection);
 669         device->collection = NULL;
 670         device->collection_size = 0;
 671         device->maxcollection = 0;
 672         device->maxapplication = 0;
 673
 674         device->status &= ~HID_STAT_PARSED;
 675 }
 676
 677 /*
 678  * Free a device structure, all reports, and all fields.
 679  */
 680
 681 static void hid_device_release(struct device *dev)
 682 {
 683         struct hid_device *hid = to_hid_device(dev);
 684
 685         hid_close_report(hid);
 686         kfree(hid->dev_rdesc);
 687         kfree(hid);
 688 }
 689
 690 /*
 691  * Fetch a report description item from the data stream. We support long
 692  * items, though they are not used yet.
 693  */
 694
 695 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
 696 {
 697         u8 b;
 698
 699         if ((end - start) <= 0)
 700                 return NULL;
 701
 702         b = *start++;
 703
 704         item->type = (b >> 2) & 3;
 705         item->tag  = (b >> 4) & 15;
 706
 707         if (item->tag == HID_ITEM_TAG_LONG) {
 708
 709                 item->format = HID_ITEM_FORMAT_LONG;
 710
 711                 if ((end - start) < 2)
 712                         return NULL;
 713
 714                 item->size = *start++;
 715                 item->tag  = *start++;
 716
 717                 if ((end - start) < item->size)
 718                         return NULL;
 719
 720                 item->data.longdata = start;
 721                 start += item->size;
 722                 return start;
 723         }
 724
 725         item->format = HID_ITEM_FORMAT_SHORT;
 726         item->size = b & 3;
 727
 728         switch (item->size) {
 729         case 0:
 730                 return start;
 731
 732         case 1:
 733                 if ((end - start) < 1)
 734                         return NULL;
 735                 item->data.u8 = *start++;
 736                 return start;
 737
 738         case 2:
 739                 if ((end - start) < 2)
 740                         return NULL;
 741                 item->data.u16 = get_unaligned_le16(start);
 742                 start = (__u8 *)((__le16 *)start + 1);
 743                 return start;
 744
 745         case 3:
 746                 item->size++;
 747                 if ((end - start) < 4)
 748                         return NULL;
 749                 item->data.u32 = get_unaligned_le32(start);
 750                 start = (__u8 *)((__le32 *)start + 1);
 751                 return start;
 752         }
 753
 754         return NULL;
 755 }
 756
 757 static void hid_scan_input_usage(struct hid_parser *parser, u32 usage)
 758 {
 759         struct hid_device *hid = parser->device;
 760
 761         if (usage == HID_DG_CONTACTID)
 762                 hid->group = HID_GROUP_MULTITOUCH;
 763 }
 764
 765 static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage)
 766 {
 767         if (usage == 0xff0000c5 && parser->global.report_count == 256 &&
 768             parser->global.report_size == 8)
 769                 parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;
 770
 771         if (usage == 0xff0000c6 && parser->global.report_count == 1 &&
 772             parser->global.report_size == 8)
 773                 parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;
 774 }
 775
 776 static void hid_scan_collection(struct hid_parser *parser, unsigned type)
 777 {
 778         struct hid_device *hid = parser->device;
 779         int i;
 780
 781         if (((parser->global.usage_page << 16) == HID_UP_SENSOR) &&
 782             type == HID_COLLECTION_PHYSICAL)
 783                 hid->group = HID_GROUP_SENSOR_HUB;
 784
 785         if (hid->vendor == USB_VENDOR_ID_MICROSOFT &&
 786             (hid->product == USB_DEVICE_ID_MS_TYPE_COVER_PRO_3 ||
 787              hid->product == USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_2 ||
 788              hid->product == USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_JP ||
 789              hid->product == USB_DEVICE_ID_MS_TYPE_COVER_PRO_4_JP ||
 790              hid->product == USB_DEVICE_ID_MS_POWER_COVER) &&
 791             hid->group == HID_GROUP_MULTITOUCH)
 792                 hid->group = HID_GROUP_GENERIC;
 793
 794         if ((parser->global.usage_page << 16) == HID_UP_GENDESK)
 795                 for (i = 0; i < parser->local.usage_index; i++)
 796                         if (parser->local.usage[i] == HID_GD_POINTER)
 797                                 parser->scan_flags |= HID_SCAN_FLAG_GD_POINTER;
 798
 799         if ((parser->global.usage_page << 16) >= HID_UP_MSVENDOR)
 800                 parser->scan_flags |= HID_SCAN_FLAG_VENDOR_SPECIFIC;
 801 }
 802
 803 static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)
 804 {
 805         __u32 data;
 806         int i;
 807
 808         hid_concatenate_last_usage_page(parser);
 809
 810         data = item_udata(item);
 811
 812         switch (item->tag) {
 813         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 814                 hid_scan_collection(parser, data & 0xff);
 815                 break;
 816         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 817                 break;
 818         case HID_MAIN_ITEM_TAG_INPUT:
 819                 /* ignore constant inputs, they will be ignored by hid-input */
 820                 if (data & HID_MAIN_ITEM_CONSTANT)
 821                         break;
 822                 for (i = 0; i < parser->local.usage_index; i++)
 823                         hid_scan_input_usage(parser, parser->local.usage[i]);
 824                 break;
 825         case HID_MAIN_ITEM_TAG_OUTPUT:
 826                 break;
 827         case HID_MAIN_ITEM_TAG_FEATURE:
 828                 for (i = 0; i < parser->local.usage_index; i++)
 829                         hid_scan_feature_usage(parser, parser->local.usage[i]);
 830                 break;
 831         }
 832
 833         /* Reset the local parser environment */
 834         memset(&parser->local, 0, sizeof(parser->local));
 835
 836         return 0;
 837 }
 838
 839 /*
 840  * Scan a report descriptor before the device is added to the bus.
 841  * Sets device groups and other properties that determine what driver
 842  * to load.
 843  */
 844 static int hid_scan_report(struct hid_device *hid)
 845 {
 846         struct hid_parser *parser;
 847         struct hid_item item;
 848         __u8 *start = hid->dev_rdesc;
 849         __u8 *end = start + hid->dev_rsize;
 850         static int (*dispatch_type[])(struct hid_parser *parser,
 851                                       struct hid_item *item) = {
 852                 hid_scan_main,
 853                 hid_parser_global,
 854                 hid_parser_local,
 855                 hid_parser_reserved
 856         };
 857
 858         parser = vzalloc(sizeof(struct hid_parser));
 859         if (!parser)
 860                 return -ENOMEM;
 861
 862         parser->device = hid;
 863         hid->group = HID_GROUP_GENERIC;
 864
 865         /*
 866          * The parsing is simpler than the one in hid_open_report() as we should
 867          * be robust against hid errors. Those errors will be raised by
 868          * hid_open_report() anyway.
 869          */
 870         while ((start = fetch_item(start, end, &item)) != NULL)
 871                 dispatch_type[item.type](parser, &item);
 872
 873         /*
 874          * Handle special flags set during scanning.
 875          */
 876         if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) &&
 877             (hid->group == HID_GROUP_MULTITOUCH))
 878                 hid->group = HID_GROUP_MULTITOUCH_WIN_8;
 879
 880         /*
 881          * Vendor specific handlings
 882          */
 883         switch (hid->vendor) {
 884         case USB_VENDOR_ID_WACOM:
 885                 hid->group = HID_GROUP_WACOM;
 886                 break;
 887         case USB_VENDOR_ID_SYNAPTICS:
 888                 if (hid->group == HID_GROUP_GENERIC)
 889                         if ((parser->scan_flags & HID_SCAN_FLAG_VENDOR_SPECIFIC)
 890                             && (parser->scan_flags & HID_SCAN_FLAG_GD_POINTER))
 891                                 /*
 892                                  * hid-rmi should take care of them,
 893                                  * not hid-generic
 894                                  */
 895                                 hid->group = HID_GROUP_RMI;
 896                 break;
 897         }
 898
 899         vfree(parser);
 900         return 0;
 901 }
 902
 903 /**
 904  * hid_parse_report - parse device report
 905  *
 906  * @device: hid device
 907  * @start: report start
 908  * @size: report size
 909  *
 910  * Allocate the device report as read by the bus driver. This function should
 911  * only be called from parse() in ll drivers.
 912  */
 913 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
 914 {
 915         hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
 916         if (!hid->dev_rdesc)
 917                 return -ENOMEM;
 918         hid->dev_rsize = size;
 919         return 0;
 920 }
 921 EXPORT_SYMBOL_GPL(hid_parse_report);
 922
 923 static const char * const hid_report_names[] = {
 924         "HID_INPUT_REPORT",
 925         "HID_OUTPUT_REPORT",
 926         "HID_FEATURE_REPORT",
 927 };
 928 /**
 929  * hid_validate_values - validate existing device report's value indexes
 930  *
 931  * @device: hid device
 932  * @type: which report type to examine
 933  * @id: which report ID to examine (0 for first)
 934  * @field_index: which report field to examine
 935  * @report_counts: expected number of values
 936  *
 937  * Validate the number of values in a given field of a given report, after
 938  * parsing.
 939  */
 940 struct hid_report *hid_validate_values(struct hid_device *hid,
 941                                        unsigned int type, unsigned int id,
 942                                        unsigned int field_index,
 943                                        unsigned int report_counts)
 944 {
 945         struct hid_report *report;
 946
 947         if (type > HID_FEATURE_REPORT) {
 948                 hid_err(hid, "invalid HID report type %u\n", type);
 949                 return NULL;
 950         }
 951
 952         if (id >= HID_MAX_IDS) {
 953                 hid_err(hid, "invalid HID report id %u\n", id);
 954                 return NULL;
 955         }
 956
 957         /*
 958          * Explicitly not using hid_get_report() here since it depends on
 959          * ->numbered being checked, which may not always be the case when
 960          * drivers go to access report values.
 961          */
 962         if (id == 0) {
 963                 /*
 964                  * Validating on id 0 means we should examine the first
 965                  * report in the list.
 966                  */
 967                 report = list_entry(
 968                                 hid->report_enum[type].report_list.next,
 969                                 struct hid_report, list);
 970         } else {
 971                 report = hid->report_enum[type].report_id_hash[id];
 972         }
 973         if (!report) {
 974                 hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
 975                 return NULL;
 976         }
 977         if (report->maxfield <= field_index) {
 978                 hid_err(hid, "not enough fields in %s %u\n",
 979                         hid_report_names[type], id);
 980                 return NULL;
 981         }
 982         if (report->field[field_index]->report_count < report_counts) {
 983                 hid_err(hid, "not enough values in %s %u field %u\n",
 984                         hid_report_names[type], id, field_index);
 985                 return NULL;
 986         }
 987         return report;
 988 }
 989 EXPORT_SYMBOL_GPL(hid_validate_values);
 990
 991 /**
 992  * hid_open_report - open a driver-specific device report
 993  *
 994  * @device: hid device
 995  *
 996  * Parse a report description into a hid_device structure. Reports are
 997  * enumerated, fields are attached to these reports.
 998  * 0 returned on success, otherwise nonzero error value.
 999  *
1000  * This function (or the equivalent hid_parse() macro) should only be
1001  * called from probe() in drivers, before starting the device.
1002  */
1003 int hid_open_report(struct hid_device *device)
1004 {
1005         struct hid_parser *parser;
1006         struct hid_item item;
1007         unsigned int size;
1008         __u8 *start;
1009         __u8 *buf;
1010         __u8 *end;
1011         __u8 *next;
1012         int ret;
1013         static int (*dispatch_type[])(struct hid_parser *parser,
1014                                       struct hid_item *item) = {
1015                 hid_parser_main,
1016                 hid_parser_global,
1017                 hid_parser_local,
1018                 hid_parser_reserved
1019         };
1020
1021         if (WARN_ON(device->status & HID_STAT_PARSED))
1022                 return -EBUSY;
1023
1024         start = device->dev_rdesc;
1025         if (WARN_ON(!start))
1026                 return -ENODEV;
1027         size = device->dev_rsize;
1028
1029         buf = kmemdup(start, size, GFP_KERNEL);
1030         if (buf == NULL)
1031                 return -ENOMEM;
1032
1033         if (device->driver->report_fixup)
1034                 start = device->driver->report_fixup(device, buf, &size);
1035         else
1036                 start = buf;
1037
1038         start = kmemdup(start, size, GFP_KERNEL);
1039         kfree(buf);
1040         if (start == NULL)
1041                 return -ENOMEM;
1042
1043         device->rdesc = start;
1044         device->rsize = size;
1045
1046         parser = vzalloc(sizeof(struct hid_parser));
1047         if (!parser) {
1048                 ret = -ENOMEM;
1049                 goto err;
1050         }
1051
1052         parser->device = device;
1053
1054         end = start + size;
1055
1056         device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
1057                                      sizeof(struct hid_collection), GFP_KERNEL);
1058         if (!device->collection) {
1059                 ret = -ENOMEM;
1060                 goto err;
1061         }
1062         device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
1063
1064         ret = -EINVAL;
1065         while ((next = fetch_item(start, end, &item)) != NULL) {
1066                 start = next;
1067
1068                 if (item.format != HID_ITEM_FORMAT_SHORT) {
1069                         hid_err(device, "unexpected long global item\n");
1070                         goto err;
1071                 }
1072
1073                 if (dispatch_type[item.type](parser, &item)) {
1074                         hid_err(device, "item %u %u %u %u parsing failed\n",
1075                                 item.format, (unsigned)item.size,
1076                                 (unsigned)item.type, (unsigned)item.tag);
1077                         goto err;
1078                 }
1079
1080                 if (start == end) {
1081                         if (parser->collection_stack_ptr) {
1082                                 hid_err(device, "unbalanced collection at end of report description\n");
1083                                 goto err;
1084                         }
1085                         if (parser->local.delimiter_depth) {
1086                                 hid_err(device, "unbalanced delimiter at end of report description\n");
1087                                 goto err;
1088                         }
1089                         vfree(parser);
1090                         device->status |= HID_STAT_PARSED;
1091                         return 0;
1092                 }
1093         }
1094
1095         hid_err(device, "item fetching failed at offset %u/%u\n",
1096                 size - (unsigned int)(end - start), size);
1097 err:
1098         vfree(parser);
1099         hid_close_report(device);
1100         return ret;
1101 }
1102 EXPORT_SYMBOL_GPL(hid_open_report);
1103
1104 /*
1105  * Convert a signed n-bit integer to signed 32-bit integer. Common
1106  * cases are done through the compiler, the screwed things has to be
1107  * done by hand.
1108  */
1109
1110 static s32 snto32(__u32 value, unsigned n)
1111 {
1112         if (!value || !n)
1113                 return 0;
1114
1115         if (n > 32)
1116                 n = 32;
1117
1118         switch (n) {
1119         case 8:  return ((__s8)value);
1120         case 16: return ((__s16)value);
1121         case 32: return ((__s32)value);
1122         }
1123         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
1124 }
1125
1126 s32 hid_snto32(__u32 value, unsigned n)
1127 {
1128         return snto32(value, n);
1129 }
1130 EXPORT_SYMBOL_GPL(hid_snto32);
1131
1132 /*
1133  * Convert a signed 32-bit integer to a signed n-bit integer.
1134  */
1135
1136 static u32 s32ton(__s32 value, unsigned n)
1137 {
1138         s32 a = value >> (n - 1);
1139         if (a && a != -1)
1140                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
1141         return value & ((1 << n) - 1);
1142 }
1143
1144 /*
1145  * Extract/implement a data field from/to a little endian report (bit array).
1146  *
1147  * Code sort-of follows HID spec:
1148  *     http://www.usb.org/developers/hidpage/HID1_11.pdf
1149  *
1150  * While the USB HID spec allows unlimited length bit fields in "report
1151  * descriptors", most devices never use more than 16 bits.
1152  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
1153  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
1154  */
1155
1156 static u32 __extract(u8 *report, unsigned offset, int n)
1157 {
1158         unsigned int idx = offset / 8;
1159         unsigned int bit_nr = 0;
1160         unsigned int bit_shift = offset % 8;
1161         int bits_to_copy = 8 - bit_shift;
1162         u32 value = 0;
1163         u32 mask = n < 32 ? (1U << n) - 1 : ~0U;
1164
1165         while (n > 0) {
1166                 value |= ((u32)report[idx] >> bit_shift) << bit_nr;
1167                 n -= bits_to_copy;
1168                 bit_nr += bits_to_copy;
1169                 bits_to_copy = 8;
1170                 bit_shift = 0;
1171                 idx++;
1172         }
1173
1174         return value & mask;
1175 }
1176
1177 u32 hid_field_extract(const struct hid_device *hid, u8 *report,
1178                         unsigned offset, unsigned n)
1179 {
1180         if (n > 32) {
1181                 hid_warn(hid, "hid_field_extract() called with n (%d) > 32! (%s)\n",
1182                          n, current->comm);
1183                 n = 32;
1184         }
1185
1186         return __extract(report, offset, n);
1187 }
1188 EXPORT_SYMBOL_GPL(hid_field_extract);
1189
1190 /*
1191  * "implement" : set bits in a little endian bit stream.
1192  * Same concepts as "extract" (see comments above).
1193  * The data mangled in the bit stream remains in little endian
1194  * order the whole time. It make more sense to talk about
1195  * endianness of register values by considering a register
1196  * a "cached" copy of the little endian bit stream.
1197  */
1198
1199 static void __implement(u8 *report, unsigned offset, int n, u32 value)
1200 {
1201         unsigned int idx = offset / 8;
1202         unsigned int bit_shift = offset % 8;
1203         int bits_to_set = 8 - bit_shift;
1204
1205         while (n - bits_to_set >= 0) {
1206                 report[idx] &= ~(0xff << bit_shift);
1207                 report[idx] |= value << bit_shift;
1208                 value >>= bits_to_set;
1209                 n -= bits_to_set;
1210                 bits_to_set = 8;
1211                 bit_shift = 0;
1212                 idx++;
1213         }
1214
1215         /* last nibble */
1216         if (n) {
1217                 u8 bit_mask = ((1U << n) - 1);
1218                 report[idx] &= ~(bit_mask << bit_shift);
1219                 report[idx] |= value << bit_shift;
1220         }
1221 }
1222
1223 static void implement(const struct hid_device *hid, u8 *report,
1224                       unsigned offset, unsigned n, u32 value)
1225 {
1226         if (unlikely(n > 32)) {
1227                 hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
1228                          __func__, n, current->comm);
1229                 n = 32;
1230         } else if (n < 32) {
1231                 u32 m = (1U << n) - 1;
1232
1233                 if (unlikely(value > m)) {
1234                         hid_warn(hid,
1235                                  "%s() called with too large value %d (n: %d)! (%s)\n",
1236                                  __func__, value, n, current->comm);
1237                         WARN_ON(1);
1238                         value &= m;
1239                 }
1240         }
1241
1242         __implement(report, offset, n, value);
1243 }
1244
1245 /*
1246  * Search an array for a value.
1247  */
1248
1249 static int search(__s32 *array, __s32 value, unsigned n)
1250 {
1251         while (n--) {
1252                 if (*array++ == value)
1253                         return 0;
1254         }
1255         return -1;
1256 }
1257
1258 /**
1259  * hid_match_report - check if driver's raw_event should be called
1260  *
1261  * @hid: hid device
1262  * @report_type: type to match against
1263  *
1264  * compare hid->driver->report_table->report_type to report->type
1265  */
1266 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
1267 {
1268         const struct hid_report_id *id = hid->driver->report_table;
1269
1270         if (!id) /* NULL means all */
1271                 return 1;
1272
1273         for (; id->report_type != HID_TERMINATOR; id++)
1274                 if (id->report_type == HID_ANY_ID ||
1275                                 id->report_type == report->type)
1276                         return 1;
1277         return 0;
1278 }
1279
1280 /**
1281  * hid_match_usage - check if driver's event should be called
1282  *
1283  * @hid: hid device
1284  * @usage: usage to match against
1285  *
1286  * compare hid->driver->usage_table->usage_{type,code} to
1287  * usage->usage_{type,code}
1288  */
1289 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1290 {
1291         const struct hid_usage_id *id = hid->driver->usage_table;
1292
1293         if (!id) /* NULL means all */
1294                 return 1;
1295
1296         for (; id->usage_type != HID_ANY_ID - 1; id++)
1297                 if ((id->usage_hid == HID_ANY_ID ||
1298                                 id->usage_hid == usage->hid) &&
1299                                 (id->usage_type == HID_ANY_ID ||
1300                                 id->usage_type == usage->type) &&
1301                                 (id->usage_code == HID_ANY_ID ||
1302                                  id->usage_code == usage->code))
1303                         return 1;
1304         return 0;
1305 }
1306
1307 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1308                 struct hid_usage *usage, __s32 value, int interrupt)
1309 {
1310         struct hid_driver *hdrv = hid->driver;
1311         int ret;
1312
1313         if (!list_empty(&hid->debug_list))
1314                 hid_dump_input(hid, usage, value);
1315
1316         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1317                 ret = hdrv->event(hid, field, usage, value);
1318                 if (ret != 0) {
1319                         if (ret < 0)
1320                                 hid_err(hid, "%s's event failed with %d\n",
1321                                                 hdrv->name, ret);
1322                         return;
1323                 }
1324         }
1325
1326         if (hid->claimed & HID_CLAIMED_INPUT)
1327                 hidinput_hid_event(hid, field, usage, value);
1328         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1329                 hid->hiddev_hid_event(hid, field, usage, value);
1330 }
1331
1332 /*
1333  * Analyse a received field, and fetch the data from it. The field
1334  * content is stored for next report processing (we do differential
1335  * reporting to the layer).
1336  */
1337
1338 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1339                             __u8 *data, int interrupt)
1340 {
1341         unsigned n;
1342         unsigned count = field->report_count;
1343         unsigned offset = field->report_offset;
1344         unsigned size = field->report_size;
1345         __s32 min = field->logical_minimum;
1346         __s32 max = field->logical_maximum;
1347         __s32 *value;
1348
1349         value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1350         if (!value)
1351                 return;
1352
1353         for (n = 0; n < count; n++) {
1354
1355                 value[n] = min < 0 ?
1356                         snto32(hid_field_extract(hid, data, offset + n * size,
1357                                size), size) :
1358                         hid_field_extract(hid, data, offset + n * size, size);
1359
1360                 /* Ignore report if ErrorRollOver */
1361                 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1362                     value[n] >= min && value[n] <= max &&
1363                     value[n] - min < field->maxusage &&
1364                     field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1365                         goto exit;
1366         }
1367
1368         for (n = 0; n < count; n++) {
1369
1370                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1371                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1372                         continue;
1373                 }
1374
1375                 if (field->value[n] >= min && field->value[n] <= max
1376                         && field->value[n] - min < field->maxusage
1377                         && field->usage[field->value[n] - min].hid
1378                         && search(value, field->value[n], count))
1379                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1380
1381                 if (value[n] >= min && value[n] <= max
1382                         && value[n] - min < field->maxusage
1383                         && field->usage[value[n] - min].hid
1384                         && search(field->value, value[n], count))
1385                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1386         }
1387
1388         memcpy(field->value, value, count * sizeof(__s32));
1389 exit:
1390         kfree(value);
1391 }
1392
1393 /*
1394  * Output the field into the report.
1395  */
1396
1397 static void hid_output_field(const struct hid_device *hid,
1398                              struct hid_field *field, __u8 *data)
1399 {
1400         unsigned count = field->report_count;
1401         unsigned offset = field->report_offset;
1402         unsigned size = field->report_size;
1403         unsigned n;
1404
1405         for (n = 0; n < count; n++) {
1406                 if (field->logical_minimum < 0) /* signed values */
1407                         implement(hid, data, offset + n * size, size,
1408                                   s32ton(field->value[n], size));
1409                 else                            /* unsigned values */
1410                         implement(hid, data, offset + n * size, size,
1411                                   field->value[n]);
1412         }
1413 }
1414
1415 /*
1416  * Compute the size of a report.
1417  */
1418 static size_t hid_compute_report_size(struct hid_report *report)
1419 {
1420         if (report->size)
1421                 return ((report->size - 1) >> 3) + 1;
1422
1423         return 0;
1424 }
1425
1426 /*
1427  * Create a report. 'data' has to be allocated using
1428  * hid_alloc_report_buf() so that it has proper size.
1429  */
1430
1431 void hid_output_report(struct hid_report *report, __u8 *data)
1432 {
1433         unsigned n;
1434
1435         if (report->id > 0)
1436                 *data++ = report->id;
1437
1438         memset(data, 0, hid_compute_report_size(report));
1439         for (n = 0; n < report->maxfield; n++)
1440                 hid_output_field(report->device, report->field[n], data);
1441 }
1442 EXPORT_SYMBOL_GPL(hid_output_report);
1443
1444 /*
1445  * Allocator for buffer that is going to be passed to hid_output_report()
1446  */
1447 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
1448 {
1449         /*
1450          * 7 extra bytes are necessary to achieve proper functionality
1451          * of implement() working on 8 byte chunks
1452          */
1453
1454         u32 len = hid_report_len(report) + 7;
1455
1456         return kmalloc(len, flags);
1457 }
1458 EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
1459
1460 /*
1461  * Set a field value. The report this field belongs to has to be
1462  * created and transferred to the device, to set this value in the
1463  * device.
1464  */
1465
1466 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1467 {
1468         unsigned size;
1469
1470         if (!field)
1471                 return -1;
1472
1473         size = field->report_size;
1474
1475         hid_dump_input(field->report->device, field->usage + offset, value);
1476
1477         if (offset >= field->report_count) {
1478                 hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1479                                 offset, field->report_count);
1480                 return -1;
1481         }
1482         if (field->logical_minimum < 0) {
1483                 if (value != snto32(s32ton(value, size), size)) {
1484                         hid_err(field->report->device, "value %d is out of range\n", value);
1485                         return -1;
1486                 }
1487         }
1488         field->value[offset] = value;
1489         return 0;
1490 }
1491 EXPORT_SYMBOL_GPL(hid_set_field);
1492
1493 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1494                 const u8 *data)
1495 {
1496         struct hid_report *report;
1497         unsigned int n = 0;     /* Normally report number is 0 */
1498
1499         /* Device uses numbered reports, data[0] is report number */
1500         if (report_enum->numbered)
1501                 n = *data;
1502
1503         report = report_enum->report_id_hash[n];
1504         if (report == NULL)
1505                 dbg_hid("undefined report_id %u received\n", n);
1506
1507         return report;
1508 }
1509
1510 /*
1511  * Implement a generic .request() callback, using .raw_request()
1512  * DO NOT USE in hid drivers directly, but through hid_hw_request instead.
1513  */
1514 void __hid_request(struct hid_device *hid, struct hid_report *report,
1515                 int reqtype)
1516 {
1517         char *buf;
1518         int ret;
1519         u32 len;
1520
1521         buf = hid_alloc_report_buf(report, GFP_KERNEL);
1522         if (!buf)
1523                 return;
1524
1525         len = hid_report_len(report);
1526
1527         if (reqtype == HID_REQ_SET_REPORT)
1528                 hid_output_report(report, buf);
1529
1530         ret = hid->ll_driver->raw_request(hid, report->id, buf, len,
1531                                           report->type, reqtype);
1532         if (ret < 0) {
1533                 dbg_hid("unable to complete request: %d\n", ret);
1534                 goto out;
1535         }
1536
1537         if (reqtype == HID_REQ_GET_REPORT)
1538                 hid_input_report(hid, report->type, buf, ret, 0);
1539
1540 out:
1541         kfree(buf);
1542 }
1543 EXPORT_SYMBOL_GPL(__hid_request);
1544
1545 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, u32 size,
1546                 int interrupt)
1547 {
1548         struct hid_report_enum *report_enum = hid->report_enum + type;
1549         struct hid_report *report;
1550         struct hid_driver *hdrv;
1551         unsigned int a;
1552         u32 rsize, csize = size;
1553         u8 *cdata = data;
1554         int ret = 0;
1555
1556         report = hid_get_report(report_enum, data);
1557         if (!report)
1558                 goto out;
1559
1560         if (report_enum->numbered) {
1561                 cdata++;
1562                 csize--;
1563         }
1564
1565         rsize = hid_compute_report_size(report);
1566
1567         if (report_enum->numbered && rsize >= HID_MAX_BUFFER_SIZE)
1568                 rsize = HID_MAX_BUFFER_SIZE - 1;
1569         else if (rsize > HID_MAX_BUFFER_SIZE)
1570                 rsize = HID_MAX_BUFFER_SIZE;
1571
1572         if (csize < rsize) {
1573                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1574                                 csize, rsize);
1575                 memset(cdata + csize, 0, rsize - csize);
1576         }
1577
1578         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1579                 hid->hiddev_report_event(hid, report);
1580         if (hid->claimed & HID_CLAIMED_HIDRAW) {
1581                 ret = hidraw_report_event(hid, data, size);
1582                 if (ret)
1583                         goto out;
1584         }
1585
1586         if (hid->claimed != HID_CLAIMED_HIDRAW && report->maxfield) {
1587                 for (a = 0; a < report->maxfield; a++)
1588                         hid_input_field(hid, report->field[a], cdata, interrupt);
1589                 hdrv = hid->driver;
1590                 if (hdrv && hdrv->report)
1591                         hdrv->report(hid, report);
1592         }
1593
1594         if (hid->claimed & HID_CLAIMED_INPUT)
1595                 hidinput_report_event(hid, report);
1596 out:
1597         return ret;
1598 }
1599 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1600
1601 /**
1602  * hid_input_report - report data from lower layer (usb, bt...)
1603  *
1604  * @hid: hid device
1605  * @type: HID report type (HID_*_REPORT)
1606  * @data: report contents
1607  * @size: size of data parameter
1608  * @interrupt: distinguish between interrupt and control transfers
1609  *
1610  * This is data entry for lower layers.
1611  */
1612 int hid_input_report(struct hid_device *hid, int type, u8 *data, u32 size, int interrupt)
1613 {
1614         struct hid_report_enum *report_enum;
1615         struct hid_driver *hdrv;
1616         struct hid_report *report;
1617         int ret = 0;
1618
1619         if (!hid)
1620                 return -ENODEV;
1621
1622         if (down_trylock(&hid->driver_input_lock))
1623                 return -EBUSY;
1624
1625         if (!hid->driver) {
1626                 ret = -ENODEV;
1627                 goto unlock;
1628         }
1629         report_enum = hid->report_enum + type;
1630         hdrv = hid->driver;
1631
1632         if (!size) {
1633                 dbg_hid("empty report\n");
1634                 ret = -1;
1635                 goto unlock;
1636         }
1637
1638         /* Avoid unnecessary overhead if debugfs is disabled */
1639         if (!list_empty(&hid->debug_list))
1640                 hid_dump_report(hid, type, data, size);
1641
1642         report = hid_get_report(report_enum, data);
1643
1644         if (!report) {
1645                 ret = -1;
1646                 goto unlock;
1647         }
1648
1649         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1650                 ret = hdrv->raw_event(hid, report, data, size);
1651                 if (ret < 0)
1652                         goto unlock;
1653         }
1654
1655         ret = hid_report_raw_event(hid, type, data, size, interrupt);
1656
1657 unlock:
1658         up(&hid->driver_input_lock);
1659         return ret;
1660 }
1661 EXPORT_SYMBOL_GPL(hid_input_report);
1662
1663 static bool hid_match_one_id(struct hid_device *hdev,
1664                 const struct hid_device_id *id)
1665 {
1666         return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1667                 (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1668                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1669                 (id->product == HID_ANY_ID || id->product == hdev->product);
1670 }
1671
1672 const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1673                 const struct hid_device_id *id)
1674 {
1675         for (; id->bus; id++)
1676                 if (hid_match_one_id(hdev, id))
1677                         return id;
1678
1679         return NULL;
1680 }
1681
1682 static const struct hid_device_id hid_hiddev_list[] = {
1683         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1684         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1685         { }
1686 };
1687
1688 static bool hid_hiddev(struct hid_device *hdev)
1689 {
1690         return !!hid_match_id(hdev, hid_hiddev_list);
1691 }
1692
1693
1694 static ssize_t
1695 read_report_descriptor(struct file *filp, struct kobject *kobj,
1696                 struct bin_attribute *attr,
1697                 char *buf, loff_t off, size_t count)
1698 {
1699         struct device *dev = kobj_to_dev(kobj);
1700         struct hid_device *hdev = to_hid_device(dev);
1701
1702         if (off >= hdev->rsize)
1703                 return 0;
1704
1705         if (off + count > hdev->rsize)
1706                 count = hdev->rsize - off;
1707
1708         memcpy(buf, hdev->rdesc + off, count);
1709
1710         return count;
1711 }
1712
1713 static ssize_t
1714 show_country(struct device *dev, struct device_attribute *attr,
1715                 char *buf)
1716 {
1717         struct hid_device *hdev = to_hid_device(dev);
1718
1719         return sprintf(buf, "%02x\n", hdev->country & 0xff);
1720 }
1721
1722 static struct bin_attribute dev_bin_attr_report_desc = {
1723         .attr = { .name = "report_descriptor", .mode = 0444 },
1724         .read = read_report_descriptor,
1725         .size = HID_MAX_DESCRIPTOR_SIZE,
1726 };
1727
1728 static struct device_attribute dev_attr_country = {
1729         .attr = { .name = "country", .mode = 0444 },
1730         .show = show_country,
1731 };
1732
1733 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1734 {
1735         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1736                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1737                 "Multi-Axis Controller"
1738         };
1739         const char *type, *bus;
1740         char buf[64] = "";
1741         unsigned int i;
1742         int len;
1743         int ret;
1744
1745         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1746                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1747         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1748                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1749         if (hdev->bus != BUS_USB)
1750                 connect_mask &= ~HID_CONNECT_HIDDEV;
1751         if (hid_hiddev(hdev))
1752                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1753
1754         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1755                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1756                 hdev->claimed |= HID_CLAIMED_INPUT;
1757
1758         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1759                         !hdev->hiddev_connect(hdev,
1760                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1761                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1762         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1763                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1764
1765         if (connect_mask & HID_CONNECT_DRIVER)
1766                 hdev->claimed |= HID_CLAIMED_DRIVER;
1767
1768         /* Drivers with the ->raw_event callback set are not required to connect
1769          * to any other listener. */
1770         if (!hdev->claimed && !hdev->driver->raw_event) {
1771                 hid_err(hdev, "device has no listeners, quitting\n");
1772                 return -ENODEV;
1773         }
1774
1775         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1776                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1777                 hdev->ff_init(hdev);
1778
1779         len = 0;
1780         if (hdev->claimed & HID_CLAIMED_INPUT)
1781                 len += sprintf(buf + len, "input");
1782         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1783                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1784                                 hdev->minor);
1785         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1786                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1787                                 ((struct hidraw *)hdev->hidraw)->minor);
1788
1789         type = "Device";
1790         for (i = 0; i < hdev->maxcollection; i++) {
1791                 struct hid_collection *col = &hdev->collection[i];
1792                 if (col->type == HID_COLLECTION_APPLICATION &&
1793                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1794                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1795                         type = types[col->usage & 0xffff];
1796                         break;
1797                 }
1798         }
1799
1800         switch (hdev->bus) {
1801         case BUS_USB:
1802                 bus = "USB";
1803                 break;
1804         case BUS_BLUETOOTH:
1805                 bus = "BLUETOOTH";
1806                 break;
1807         case BUS_I2C:
1808                 bus = "I2C";
1809                 break;
1810         case BUS_VIRTUAL:
1811                 bus = "VIRTUAL";
1812                 break;
1813         default:
1814                 bus = "<UNKNOWN>";
1815         }
1816
1817         ret = device_create_file(&hdev->dev, &dev_attr_country);
1818         if (ret)
1819                 hid_warn(hdev,
1820                          "can't create sysfs country code attribute err: %d\n", ret);
1821
1822         hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1823                  buf, bus, hdev->version >> 8, hdev->version & 0xff,
1824                  type, hdev->name, hdev->phys);
1825
1826         return 0;
1827 }
1828 EXPORT_SYMBOL_GPL(hid_connect);
1829
1830 void hid_disconnect(struct hid_device *hdev)
1831 {
1832         device_remove_file(&hdev->dev, &dev_attr_country);
1833         if (hdev->claimed & HID_CLAIMED_INPUT)
1834                 hidinput_disconnect(hdev);
1835         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1836                 hdev->hiddev_disconnect(hdev);
1837         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1838                 hidraw_disconnect(hdev);
1839         hdev->claimed = 0;
1840 }
1841 EXPORT_SYMBOL_GPL(hid_disconnect);
1842
1843 /*
1844  * A list of devices for which there is a specialized driver on HID bus.
1845  *
1846  * Please note that for multitouch devices (driven by hid-multitouch driver),
1847  * there is a proper autodetection and autoloading in place (based on presence
1848  * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1849  * as we are doing the right thing in hid_scan_usage().
1850  *
1851  * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1852  * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1853  * used as a driver. See hid_scan_report().
1854  */
1855 static const struct hid_device_id hid_have_special_driver[] = {
1856         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1857         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1858         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1859         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1860         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0xf705) },
1861         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) },
1862         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1863         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1864         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1865         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1866         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1867         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1868         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1869         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1870         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1871         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1872         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1873         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1874         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1875         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1876         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1877         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1878         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1879         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1880         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1881         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1882         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1883         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1884         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1885         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1886         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1887         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1888         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1889         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1890         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1891         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1892         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1893         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1894         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1895         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1896         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1897         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1898         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1899         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1900         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1901         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1902         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1903         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1904         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1905         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1906         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1907         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1908         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1909         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1910         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1911         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1912         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1913         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1914         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1915         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1916         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1917         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1918         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1919         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1920         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1921         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1922         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1923         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1924         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1925         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1926         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1927         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1928         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1929         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1930         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1931         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1932         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_ANSI) },
1933         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_ISO) },
1934         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_JIS) },
1935         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1936         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1937         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1938         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1939         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1940         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_JIS) },
1941         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_ANSI) },
1942         { HID_BLUETOOTH_DEVICE(BT_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_ANSI) },
1943         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_NUMPAD_ANSI) },
1944         { HID_BLUETOOTH_DEVICE(BT_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_NUMPAD_ANSI) },
1945         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1946         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1947         { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_NOTEBOOK_KEYBOARD) },
1948         { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1949         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1950         { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185BFM, 0x2208) },
1951         { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185PC, 0x5506) },
1952         { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185V2PC, 0x1850) },
1953         { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185V2BFM, 0x5500) },
1954         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1955         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1956         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1957         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1958         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1959         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1960         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1961         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1962         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) },
1963         { HID_USB_DEVICE(USB_VENDOR_ID_CORSAIR, USB_DEVICE_ID_CORSAIR_K90) },
1964         { HID_USB_DEVICE(USB_VENDOR_ID_CORSAIR, USB_DEVICE_ID_CORSAIR_SCIMITAR_PRO_RGB) },
1965         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1966         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_CP2112) },
1967         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1968         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1969         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1970         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1971         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1972         { HID_USB_DEVICE(USB_VENDOR_ID_DELCOM, USB_DEVICE_ID_DELCOM_VISUAL_IND) },
1973         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1974         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1975         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, USB_DEVICE_ID_DREAM_CHEEKY_WN) },
1976         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, USB_DEVICE_ID_DREAM_CHEEKY_FA) },
1977         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1978         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
1979         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
1980         { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1981         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1982         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1983         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1984         { HID_USB_DEVICE(USB_VENDOR_ID_GEMBIRD, USB_DEVICE_ID_GEMBIRD_JPD_DUALFORCE2) },
1985         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1986         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1987         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1988         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1989         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1990         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1991         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1992         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
1993         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
1994         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
1995         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
1996         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
1997         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2) },
1998         { HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_TABLET) },
1999         { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_JESS_ZEN_AIO_KBD) },
2000         { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
2001         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
2002         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
2003         { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
2004         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
2005         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_MANTICORE) },
2006         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
2007         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
2008         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
2009         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
2010         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X_V2) },
2011         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
2012         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_PENSKETCH_M912) },
2013         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
2014         { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
2015 #if IS_ENABLED(CONFIG_HID_LENOVO)
2016         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
2017         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CUSBKBD) },
2018         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CBTKBD) },
2019         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPPRODOCK) },
2020 #endif
2021         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
2022         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
2023         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
2024         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
2025         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
2026         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_T651) },
2027         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
2028         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
2029         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
2030         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
2031         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
2032         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
2033         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DUAL_ACTION) },
2034         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
2035         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
2036         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
2037         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
2038         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G29_WHEEL) },
2039         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G920_WHEEL) },
2040         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
2041         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
2042         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
2043         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
2044         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
2045         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
2046         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_VIBRATION_WHEEL) },
2047         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
2048         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
2049         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
2050         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
2051 #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
2052         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
2053         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
2054 #endif
2055         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
2056         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
2057         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
2058         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
2059         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
2060         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
2061         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_LUXAFOR) },
2062         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
2063         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_KEYBOARD) },
2064         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
2065         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
2066         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
2067         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE7K) },
2068         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
2069         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
2070         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
2071         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
2072         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_OFFICE_KB) },
2073         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3) },
2074         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_2) },
2075         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_JP) },
2076         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_4_JP) },
2077         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_7K) },
2078         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_600) },
2079         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3KV1) },
2080         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_POWER_COVER) },
2081         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
2082         { HID_USB_DEVICE(USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL) },
2083         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
2084         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
2085         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
2086         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
2087         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
2088         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
2089         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
2090         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
2091         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
2092         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
2093         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
2094         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
2095         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
2096         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
2097         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
2098         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
2099         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
2100         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
2101         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
2102         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
2103         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
2104         { HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_6000) },
2105         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
2106         { HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS, HID_ANY_ID) },
2107         { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
2108         { HID_USB_DEVICE(USB_VENDOR_ID_RISO_KAGAKU, USB_DEVICE_ID_RI_KA_WEBMAIL) },
2109 #if IS_ENABLED(CONFIG_HID_ROCCAT)
2110         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
2111         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
2112         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKUFX) },
2113         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
2114         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
2115         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
2116         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
2117         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEXTD) },
2118         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
2119         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
2120         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
2121         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
2122         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK) },
2123         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_GLOW) },
2124         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_PRO) },
2125         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
2126 #endif
2127 #if IS_ENABLED(CONFIG_HID_SAITEK)
2128         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
2129         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7_OLD) },
2130         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7) },
2131         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT9) },
2132         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_MMO7) },
2133         { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_RAT5) },
2134         { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_RAT9) },
2135 #endif
2136         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
2137         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
2138         { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
2139         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SMK, USB_DEVICE_ID_SMK_PS3_BDREMOTE) },
2140         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
2141         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
2142         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_MOTION_CONTROLLER) },
2143         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_MOTION_CONTROLLER) },
2144         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
2145         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
2146         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
2147         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
2148         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
2149         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
2150         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
2151         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER_2) },
2152         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER_2) },
2153         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER_DONGLE) },
2154         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
2155         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
2156         { HID_USB_DEVICE(USB_VENDOR_ID_SINO_LITE, USB_DEVICE_ID_SINO_LITE_CONTROLLER) },
2157         { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
2158         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
2159         { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
2160         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
2161         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
2162         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
2163         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
2164         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
2165         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
2166         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
2167         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
2168         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
2169         { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
2170         { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_PRO) },
2171         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
2172         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
2173         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
2174         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
2175         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
2176         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
2177         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
2178         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
2179         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
2180         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
2181         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_YIYNOVA_TABLET) },
2182         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UGEE_TABLET_81) },
2183         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UGEE_TABLET_45) },
2184         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_DRAWIMAGE_G3) },
2185         { HID_USB_DEVICE(USB_VENDOR_ID_UGTIZER, USB_DEVICE_ID_UGTIZER_TABLET_GP0610) },
2186         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
2187         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
2188         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
2189         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
2190         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
2191         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
2192         { HID_USB_DEVICE(USB_VENDOR_ID_PLAYDOTCOM, USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII) },
2193         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
2194         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
2195         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
2196         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
2197         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
2198         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
2199         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
2200         { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
2201         { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
2202         { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_THT_2P_ARCADE) },
2203         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
2204         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
2205         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
2206
2207         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
2208         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
2209         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
2210         { HID_USB_DEVICE(USB_VENDOR_ID_RAZER, USB_DEVICE_ID_RAZER_BLADE_14) },
2211         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM6533) },
2212         { }
2213 };
2214
2215 struct hid_dynid {
2216         struct list_head list;
2217         struct hid_device_id id;
2218 };
2219
2220 /**
2221  * store_new_id - add a new HID device ID to this driver and re-probe devices
2222  * @driver: target device driver
2223  * @buf: buffer for scanning device ID data
2224  * @count: input size
2225  *
2226  * Adds a new dynamic hid device ID to this driver,
2227  * and causes the driver to probe for all devices again.
2228  */
2229 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
2230                 size_t count)
2231 {
2232         struct hid_driver *hdrv = to_hid_driver(drv);
2233         struct hid_dynid *dynid;
2234         __u32 bus, vendor, product;
2235         unsigned long driver_data = 0;
2236         int ret;
2237
2238         ret = sscanf(buf, "%x %x %x %lx",
2239                         &bus, &vendor, &product, &driver_data);
2240         if (ret < 3)
2241                 return -EINVAL;
2242
2243         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
2244         if (!dynid)
2245                 return -ENOMEM;
2246
2247         dynid->id.bus = bus;
2248         dynid->id.group = HID_GROUP_ANY;
2249         dynid->id.vendor = vendor;
2250         dynid->id.product = product;
2251         dynid->id.driver_data = driver_data;
2252
2253         spin_lock(&hdrv->dyn_lock);
2254         list_add_tail(&dynid->list, &hdrv->dyn_list);
2255         spin_unlock(&hdrv->dyn_lock);
2256
2257         ret = driver_attach(&hdrv->driver);
2258
2259         return ret ? : count;
2260 }
2261 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
2262
2263 static void hid_free_dynids(struct hid_driver *hdrv)
2264 {
2265         struct hid_dynid *dynid, *n;
2266
2267         spin_lock(&hdrv->dyn_lock);
2268         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
2269                 list_del(&dynid->list);
2270                 kfree(dynid);
2271         }
2272         spin_unlock(&hdrv->dyn_lock);
2273 }
2274
2275 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
2276                 struct hid_driver *hdrv)
2277 {
2278         struct hid_dynid *dynid;
2279
2280         spin_lock(&hdrv->dyn_lock);
2281         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
2282                 if (hid_match_one_id(hdev, &dynid->id)) {
2283                         spin_unlock(&hdrv->dyn_lock);
2284                         return &dynid->id;
2285                 }
2286         }
2287         spin_unlock(&hdrv->dyn_lock);
2288
2289         return hid_match_id(hdev, hdrv->id_table);
2290 }
2291
2292 static int hid_bus_match(struct device *dev, struct device_driver *drv)
2293 {
2294         struct hid_driver *hdrv = to_hid_driver(drv);
2295         struct hid_device *hdev = to_hid_device(dev);
2296
2297         return hid_match_device(hdev, hdrv) != NULL;
2298 }
2299
2300 static int hid_device_probe(struct device *dev)
2301 {
2302         struct hid_driver *hdrv = to_hid_driver(dev->driver);
2303         struct hid_device *hdev = to_hid_device(dev);
2304         const struct hid_device_id *id;
2305         int ret = 0;
2306
2307         if (down_interruptible(&hdev->driver_lock))
2308                 return -EINTR;
2309         if (down_interruptible(&hdev->driver_input_lock)) {
2310                 ret = -EINTR;
2311                 goto unlock_driver_lock;
2312         }
2313         hdev->io_started = false;
2314
2315         if (!hdev->driver) {
2316                 id = hid_match_device(hdev, hdrv);
2317                 if (id == NULL) {
2318                         ret = -ENODEV;
2319                         goto unlock;
2320                 }
2321
2322                 hdev->driver = hdrv;
2323                 if (hdrv->probe) {
2324                         ret = hdrv->probe(hdev, id);
2325                 } else { /* default probe */
2326                         ret = hid_open_report(hdev);
2327                         if (!ret)
2328                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
2329                 }
2330                 if (ret) {
2331                         hid_close_report(hdev);
2332                         hdev->driver = NULL;
2333                 }
2334         }
2335 unlock:
2336         if (!hdev->io_started)
2337                 up(&hdev->driver_input_lock);
2338 unlock_driver_lock:
2339         up(&hdev->driver_lock);
2340         return ret;
2341 }
2342
2343 static int hid_device_remove(struct device *dev)
2344 {
2345         struct hid_device *hdev = to_hid_device(dev);
2346         struct hid_driver *hdrv;
2347         int ret = 0;
2348
2349         if (down_interruptible(&hdev->driver_lock))
2350                 return -EINTR;
2351         if (down_interruptible(&hdev->driver_input_lock)) {
2352                 ret = -EINTR;
2353                 goto unlock_driver_lock;
2354         }
2355         hdev->io_started = false;
2356
2357         hdrv = hdev->driver;
2358         if (hdrv) {
2359                 if (hdrv->remove)
2360                         hdrv->remove(hdev);
2361                 else /* default remove */
2362                         hid_hw_stop(hdev);
2363                 hid_close_report(hdev);
2364                 hdev->driver = NULL;
2365         }
2366
2367         if (!hdev->io_started)
2368                 up(&hdev->driver_input_lock);
2369 unlock_driver_lock:
2370         up(&hdev->driver_lock);
2371         return ret;
2372 }
2373
2374 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
2375                              char *buf)
2376 {
2377         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2378
2379         return scnprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
2380                          hdev->bus, hdev->group, hdev->vendor, hdev->product);
2381 }
2382 static DEVICE_ATTR_RO(modalias);
2383
2384 static struct attribute *hid_dev_attrs[] = {
2385         &dev_attr_modalias.attr,
2386         NULL,
2387 };
2388 static struct bin_attribute *hid_dev_bin_attrs[] = {
2389         &dev_bin_attr_report_desc,
2390         NULL
2391 };
2392 static const struct attribute_group hid_dev_group = {
2393         .attrs = hid_dev_attrs,
2394         .bin_attrs = hid_dev_bin_attrs,
2395 };
2396 __ATTRIBUTE_GROUPS(hid_dev);
2397
2398 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
2399 {
2400         struct hid_device *hdev = to_hid_device(dev);
2401
2402         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
2403                         hdev->bus, hdev->vendor, hdev->product))
2404                 return -ENOMEM;
2405
2406         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
2407                 return -ENOMEM;
2408
2409         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
2410                 return -ENOMEM;
2411
2412         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
2413                 return -ENOMEM;
2414
2415         if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
2416                            hdev->bus, hdev->group, hdev->vendor, hdev->product))
2417                 return -ENOMEM;
2418
2419         return 0;
2420 }
2421
2422 static struct bus_type hid_bus_type = {
2423         .name           = "hid",
2424         .dev_groups     = hid_dev_groups,
2425         .match          = hid_bus_match,
2426         .probe          = hid_device_probe,
2427         .remove         = hid_device_remove,
2428         .uevent         = hid_uevent,
2429 };
2430
2431 /* a list of devices that shouldn't be handled by HID core at all */
2432 static const struct hid_device_id hid_ignore_list[] = {
2433         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
2434         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
2435         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
2436         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
2437         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
2438         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
2439         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
2440         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
2441         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
2442         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
2443         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
2444         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
2445         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
2446         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
2447         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
2448         { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
2449         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
2450         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
2451         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
2452         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI4713) },
2453         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
2454         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
2455         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
2456         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
2457         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
2458         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
2459         { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, 0x0400) },
2460         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
2461         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
2462         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
2463         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
2464         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
2465         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
2466         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2467         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2468         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2469         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2470         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2471         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2472         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2473         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2474         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2475         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2476         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2477         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2478         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2479         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2480         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2481         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2482         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2483         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2484         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2485         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2486         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2487         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2488         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2489         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2490         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2491         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2492         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2493         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2494         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2495         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2496         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2497         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2498         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2499         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2500         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2501         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2502         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2503         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2504         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2505         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2506         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2507         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2508         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2509         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2510         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2511         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2512         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2513         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2514         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2515         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2516         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2517         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2518         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2519         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2520         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
2521         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
2522         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_GN9350E) },
2523         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2524         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2525         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2526         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2527         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2528         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2529         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2530         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2531         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2532         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2533         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2534         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2535         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2536         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2537         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2538         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERANALYSERCASSY) },
2539         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CONVERTERCONTROLLERCASSY) },
2540         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETESTCASSY) },
2541         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2542         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2543         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2544         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2545         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2546         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2547         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2548         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2549         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2550         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2551         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2552         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2553         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2554         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2555         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2556         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2557         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2558         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2559         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2560         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2561         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2562         { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2563         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2564         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2565         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2566         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2567         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICK16F1454) },
2568         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICK16F1454_V2) },
2569         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2570         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2571         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2572         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2573         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2574         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2575         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2576         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2577         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2578         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2579         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2580         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2581         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2582         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2583         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2584         { HID_USB_DEVICE(USB_VENDOR_ID_PETZL, USB_DEVICE_ID_PETZL_HEADLAMP) },
2585         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2586         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2587 #if IS_ENABLED(CONFIG_MOUSE_SYNAPTICS_USB)
2588         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2589         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2590         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2591         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2592         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2593         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2594         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2595         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2596 #endif
2597         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2598         { }
2599 };
2600
2601 /**
2602  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2603  *
2604  * There are composite devices for which we want to ignore only a certain
2605  * interface. This is a list of devices for which only the mouse interface will
2606  * be ignored. This allows a dedicated driver to take care of the interface.
2607  */
2608 static const struct hid_device_id hid_mouse_ignore_list[] = {
2609         /* appletouch driver */
2610         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2611         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2612         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2613         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2614         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2615         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2616         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2617         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2618         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2619         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2620         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2621         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2622         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2623         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2624         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2625         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2626         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2627         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2628         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2629         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2630         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2631         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2632         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2633         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2634         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2635         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2636         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2637         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2638         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2639         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2640         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2641         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2642         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2643         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2644         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2645         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2646         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2647         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2648         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2649         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2650         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2651         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2652         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2653         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2654         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2655         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2656         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2657         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2658         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2659         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2660         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_ANSI) },
2661         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_ISO) },
2662         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_JIS) },
2663         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2664         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2665         { }
2666 };
2667
2668 bool hid_ignore(struct hid_device *hdev)
2669 {
2670         if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2671                 return false;
2672         if (hdev->quirks & HID_QUIRK_IGNORE)
2673                 return true;
2674
2675         switch (hdev->vendor) {
2676         case USB_VENDOR_ID_CODEMERCS:
2677                 /* ignore all Code Mercenaries IOWarrior devices */
2678                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2679                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2680                         return true;
2681                 break;
2682         case USB_VENDOR_ID_LOGITECH:
2683                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2684                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2685                         return true;
2686                 /*
2687                  * The Keene FM transmitter USB device has the same USB ID as
2688                  * the Logitech AudioHub Speaker, but it should ignore the hid.
2689                  * Check if the name is that of the Keene device.
2690                  * For reference: the name of the AudioHub is
2691                  * "HOLTEK  AudioHub Speaker".
2692                  */
2693                 if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2694                         !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2695                                 return true;
2696                 break;
2697         case USB_VENDOR_ID_SOUNDGRAPH:
2698                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2699                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2700                         return true;
2701                 break;
2702         case USB_VENDOR_ID_HANWANG:
2703                 if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2704                     hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2705                         return true;
2706                 break;
2707         case USB_VENDOR_ID_JESS:
2708                 if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2709                                 hdev->type == HID_TYPE_USBNONE)
2710                         return true;
2711                 break;
2712         case USB_VENDOR_ID_VELLEMAN:
2713                 /* These are not HID devices.  They are handled by comedi. */
2714                 if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2715                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2716                     (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2717                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2718                         return true;
2719                 break;
2720         case USB_VENDOR_ID_ATMEL_V_USB:
2721                 /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2722                  * it has the same USB ID as many Atmel V-USB devices. This
2723                  * usb radio is handled by radio-ma901.c driver so we want
2724                  * ignore the hid. Check the name, bus, product and ignore
2725                  * if we have MA901 usb radio.
2726                  */
2727                 if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2728                         hdev->bus == BUS_USB &&
2729                         strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2730                         return true;
2731                 break;
2732         case USB_VENDOR_ID_ELAN:
2733                 /*
2734                  * Many Elan devices have a product id of 0x0401 and are handled
2735                  * by the elan_i2c input driver. But the ACPI HID ELAN0800 dev
2736                  * is not (and cannot be) handled by that driver ->
2737                  * Ignore all 0x0401 devs except for the ELAN0800 dev.
2738                  */
2739                 if (hdev->product == 0x0401 &&
2740                     strncmp(hdev->name, "ELAN0800", 8) != 0)
2741                         return true;
2742                 break;
2743         }
2744
2745         if (hdev->type == HID_TYPE_USBMOUSE &&
2746                         hid_match_id(hdev, hid_mouse_ignore_list))
2747                 return true;
2748
2749         return !!hid_match_id(hdev, hid_ignore_list);
2750 }
2751 EXPORT_SYMBOL_GPL(hid_ignore);
2752
2753 int hid_add_device(struct hid_device *hdev)
2754 {
2755         static atomic_t id = ATOMIC_INIT(0);
2756         int ret;
2757
2758         if (WARN_ON(hdev->status & HID_STAT_ADDED))
2759                 return -EBUSY;
2760
2761         /* we need to kill them here, otherwise they will stay allocated to
2762          * wait for coming driver */
2763         if (hid_ignore(hdev))
2764                 return -ENODEV;
2765
2766         /*
2767          * Check for the mandatory transport channel.
2768          */
2769          if (!hdev->ll_driver->raw_request) {
2770                 hid_err(hdev, "transport driver missing .raw_request()\n");
2771                 return -EINVAL;
2772          }
2773
2774         /*
2775          * Read the device report descriptor once and use as template
2776          * for the driver-specific modifications.
2777          */
2778         ret = hdev->ll_driver->parse(hdev);
2779         if (ret)
2780                 return ret;
2781         if (!hdev->dev_rdesc)
2782                 return -ENODEV;
2783
2784         /*
2785          * Scan generic devices for group information
2786          */
2787         if (hid_ignore_special_drivers) {
2788                 hdev->group = HID_GROUP_GENERIC;
2789         } else if (!hdev->group &&
2790                    !hid_match_id(hdev, hid_have_special_driver)) {
2791                 ret = hid_scan_report(hdev);
2792                 if (ret)
2793                         hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2794         }
2795
2796         /* XXX hack, any other cleaner solution after the driver core
2797          * is converted to allow more than 20 bytes as the device name? */
2798         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2799                      hdev->vendor, hdev->product, atomic_inc_return(&id));
2800
2801         hid_debug_register(hdev, dev_name(&hdev->dev));
2802         ret = device_add(&hdev->dev);
2803         if (!ret)
2804                 hdev->status |= HID_STAT_ADDED;
2805         else
2806                 hid_debug_unregister(hdev);
2807
2808         return ret;
2809 }
2810 EXPORT_SYMBOL_GPL(hid_add_device);
2811
2812 /**
2813  * hid_allocate_device - allocate new hid device descriptor
2814  *
2815  * Allocate and initialize hid device, so that hid_destroy_device might be
2816  * used to free it.
2817  *
2818  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2819  * error value.
2820  */
2821 struct hid_device *hid_allocate_device(void)
2822 {
2823         struct hid_device *hdev;
2824         int ret = -ENOMEM;
2825
2826         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2827         if (hdev == NULL)
2828                 return ERR_PTR(ret);
2829
2830         device_initialize(&hdev->dev);
2831         hdev->dev.release = hid_device_release;
2832         hdev->dev.bus = &hid_bus_type;
2833         device_enable_async_suspend(&hdev->dev);
2834
2835         hid_close_report(hdev);
2836
2837         init_waitqueue_head(&hdev->debug_wait);
2838         INIT_LIST_HEAD(&hdev->debug_list);
2839         spin_lock_init(&hdev->debug_list_lock);
2840         sema_init(&hdev->driver_lock, 1);
2841         sema_init(&hdev->driver_input_lock, 1);
2842
2843         return hdev;
2844 }
2845 EXPORT_SYMBOL_GPL(hid_allocate_device);
2846
2847 static void hid_remove_device(struct hid_device *hdev)
2848 {
2849         if (hdev->status & HID_STAT_ADDED) {
2850                 device_del(&hdev->dev);
2851                 hid_debug_unregister(hdev);
2852                 hdev->status &= ~HID_STAT_ADDED;
2853         }
2854         kfree(hdev->dev_rdesc);
2855         hdev->dev_rdesc = NULL;
2856         hdev->dev_rsize = 0;
2857 }
2858
2859 /**
2860  * hid_destroy_device - free previously allocated device
2861  *
2862  * @hdev: hid device
2863  *
2864  * If you allocate hid_device through hid_allocate_device, you should ever
2865  * free by this function.
2866  */
2867 void hid_destroy_device(struct hid_device *hdev)
2868 {
2869         hid_remove_device(hdev);
2870         put_device(&hdev->dev);
2871 }
2872 EXPORT_SYMBOL_GPL(hid_destroy_device);
2873
2874 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2875                 const char *mod_name)
2876 {
2877         int ret;
2878
2879         hdrv->driver.name = hdrv->name;
2880         hdrv->driver.bus = &hid_bus_type;
2881         hdrv->driver.owner = owner;
2882         hdrv->driver.mod_name = mod_name;
2883
2884         INIT_LIST_HEAD(&hdrv->dyn_list);
2885         spin_lock_init(&hdrv->dyn_lock);
2886
2887         ret = driver_register(&hdrv->driver);
2888         if (ret)
2889                 return ret;
2890
2891         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2892         if (ret)
2893                 driver_unregister(&hdrv->driver);
2894
2895         return ret;
2896 }
2897 EXPORT_SYMBOL_GPL(__hid_register_driver);
2898
2899 void hid_unregister_driver(struct hid_driver *hdrv)
2900 {
2901         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2902         driver_unregister(&hdrv->driver);
2903         hid_free_dynids(hdrv);
2904 }
2905 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2906
2907 int hid_check_keys_pressed(struct hid_device *hid)
2908 {
2909         struct hid_input *hidinput;
2910         int i;
2911
2912         if (!(hid->claimed & HID_CLAIMED_INPUT))
2913                 return 0;
2914
2915         list_for_each_entry(hidinput, &hid->inputs, list) {
2916                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2917                         if (hidinput->input->key[i])
2918                                 return 1;
2919         }
2920
2921         return 0;
2922 }
2923
2924 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2925
2926 static int __init hid_init(void)
2927 {
2928         int ret;
2929
2930         if (hid_debug)
2931                 pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2932                         "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2933
2934         ret = bus_register(&hid_bus_type);
2935         if (ret) {
2936                 pr_err("can't register hid bus\n");
2937                 goto err;
2938         }
2939
2940         ret = hidraw_init();
2941         if (ret)
2942                 goto err_bus;
2943
2944         hid_debug_init();
2945
2946         return 0;
2947 err_bus:
2948         bus_unregister(&hid_bus_type);
2949 err:
2950         return ret;
2951 }
2952
2953 static void __exit hid_exit(void)
2954 {
2955         hid_debug_exit();
2956         hidraw_exit();
2957         bus_unregister(&hid_bus_type);
2958 }
2959
2960 module_init(hid_init);
2961 module_exit(hid_exit);
2962
2963 MODULE_AUTHOR("Andreas Gal");
2964 MODULE_AUTHOR("Vojtech Pavlik");
2965 MODULE_AUTHOR("Jiri Kosina");
2966 MODULE_LICENSE(DRIVER_LICENSE);
2967