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 <[email protected]>
   6  *  Copyright (c) 2005 Michael Haboustak <[email protected]> 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(debug, "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, unsigned values)
  95 {
  96         struct hid_field *field;
  97
  98         if (report->maxfield == HID_MAX_FIELDS) {
  99                 hid_err(report->device, "too many fields in report\n");
 100                 return NULL;
 101         }
 102
 103         field = kzalloc((sizeof(struct hid_field) +
 104                          usages * sizeof(struct hid_usage) +
 105                          values * sizeof(unsigned)), GFP_KERNEL);
 106         if (!field)
 107                 return NULL;
 108
 109         field->index = report->maxfield++;
 110         report->field[field->index] = field;
 111         field->usage = (struct hid_usage *)(field + 1);
 112         field->value = (s32 *)(field->usage + usages);
 113         field->report = report;
 114
 115         return field;
 116 }
 117
 118 /*
 119  * Open a collection. The type/usage is pushed on the stack.
 120  */
 121
 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  * Add a usage to the temporary parser table.
 201  */
 202
 203 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
 204 {
 205         if (parser->local.usage_index >= HID_MAX_USAGES) {
 206                 hid_err(parser->device, "usage index exceeded\n");
 207                 return -1;
 208         }
 209         parser->local.usage[parser->local.usage_index] = usage;
 210         parser->local.collection_index[parser->local.usage_index] =
 211                 parser->collection_stack_ptr ?
 212                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
 213         parser->local.usage_index++;
 214         return 0;
 215 }
 216
 217 /*
 218  * Register a new field for this report.
 219  */
 220
 221 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
 222 {
 223         struct hid_report *report;
 224         struct hid_field *field;
 225         unsigned usages;
 226         unsigned offset;
 227         unsigned i;
 228
 229         report = hid_register_report(parser->device, report_type, parser->global.report_id);
 230         if (!report) {
 231                 hid_err(parser->device, "hid_register_report failed\n");
 232                 return -1;
 233         }
 234
 235         /* Handle both signed and unsigned cases properly */
 236         if ((parser->global.logical_minimum < 0 &&
 237                 parser->global.logical_maximum <
 238                 parser->global.logical_minimum) ||
 239                 (parser->global.logical_minimum >= 0 &&
 240                 (__u32)parser->global.logical_maximum <
 241                 (__u32)parser->global.logical_minimum)) {
 242                 dbg_hid("logical range invalid 0x%x 0x%x\n",
 243                         parser->global.logical_minimum,
 244                         parser->global.logical_maximum);
 245                 return -1;
 246         }
 247
 248         offset = report->size;
 249         report->size += parser->global.report_size * parser->global.report_count;
 250
 251         if (!parser->local.usage_index) /* Ignore padding fields */
 252                 return 0;
 253
 254         usages = max_t(unsigned, parser->local.usage_index,
 255                                  parser->global.report_count);
 256
 257         field = hid_register_field(report, usages, parser->global.report_count);
 258         if (!field)
 259                 return 0;
 260
 261         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
 262         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
 263         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
 264
 265         for (i = 0; i < usages; i++) {
 266                 unsigned j = i;
 267                 /* Duplicate the last usage we parsed if we have excess values */
 268                 if (i >= parser->local.usage_index)
 269                         j = parser->local.usage_index - 1;
 270                 field->usage[i].hid = parser->local.usage[j];
 271                 field->usage[i].collection_index =
 272                         parser->local.collection_index[j];
 273                 field->usage[i].usage_index = i;
 274         }
 275
 276         field->maxusage = usages;
 277         field->flags = flags;
 278         field->report_offset = offset;
 279         field->report_type = report_type;
 280         field->report_size = parser->global.report_size;
 281         field->report_count = parser->global.report_count;
 282         field->logical_minimum = parser->global.logical_minimum;
 283         field->logical_maximum = parser->global.logical_maximum;
 284         field->physical_minimum = parser->global.physical_minimum;
 285         field->physical_maximum = parser->global.physical_maximum;
 286         field->unit_exponent = parser->global.unit_exponent;
 287         field->unit = parser->global.unit;
 288
 289         return 0;
 290 }
 291
 292 /*
 293  * Read data value from item.
 294  */
 295
 296 static u32 item_udata(struct hid_item *item)
 297 {
 298         switch (item->size) {
 299         case 1: return item->data.u8;
 300         case 2: return item->data.u16;
 301         case 4: return item->data.u32;
 302         }
 303         return 0;
 304 }
 305
 306 static s32 item_sdata(struct hid_item *item)
 307 {
 308         switch (item->size) {
 309         case 1: return item->data.s8;
 310         case 2: return item->data.s16;
 311         case 4: return item->data.s32;
 312         }
 313         return 0;
 314 }
 315
 316 /*
 317  * Process a global item.
 318  */
 319
 320 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
 321 {
 322         __s32 raw_value;
 323         switch (item->tag) {
 324         case HID_GLOBAL_ITEM_TAG_PUSH:
 325
 326                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
 327                         hid_err(parser->device, "global environment stack overflow\n");
 328                         return -1;
 329                 }
 330
 331                 memcpy(parser->global_stack + parser->global_stack_ptr++,
 332                         &parser->global, sizeof(struct hid_global));
 333                 return 0;
 334
 335         case HID_GLOBAL_ITEM_TAG_POP:
 336
 337                 if (!parser->global_stack_ptr) {
 338                         hid_err(parser->device, "global environment stack underflow\n");
 339                         return -1;
 340                 }
 341
 342                 memcpy(&parser->global, parser->global_stack +
 343                         --parser->global_stack_ptr, sizeof(struct hid_global));
 344                 return 0;
 345
 346         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
 347                 parser->global.usage_page = item_udata(item);
 348                 return 0;
 349
 350         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
 351                 parser->global.logical_minimum = item_sdata(item);
 352                 return 0;
 353
 354         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
 355                 if (parser->global.logical_minimum < 0)
 356                         parser->global.logical_maximum = item_sdata(item);
 357                 else
 358                         parser->global.logical_maximum = item_udata(item);
 359                 return 0;
 360
 361         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
 362                 parser->global.physical_minimum = item_sdata(item);
 363                 return 0;
 364
 365         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
 366                 if (parser->global.physical_minimum < 0)
 367                         parser->global.physical_maximum = item_sdata(item);
 368                 else
 369                         parser->global.physical_maximum = item_udata(item);
 370                 return 0;
 371
 372         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
 373                 /* Many devices provide unit exponent as a two's complement
 374                  * nibble due to the common misunderstanding of HID
 375                  * specification 1.11, 6.2.2.7 Global Items. Attempt to handle
 376                  * both this and the standard encoding. */
 377                 raw_value = item_sdata(item);
 378                 if (!(raw_value & 0xfffffff0))
 379                         parser->global.unit_exponent = hid_snto32(raw_value, 4);
 380                 else
 381                         parser->global.unit_exponent = raw_value;
 382                 return 0;
 383
 384         case HID_GLOBAL_ITEM_TAG_UNIT:
 385                 parser->global.unit = item_udata(item);
 386                 return 0;
 387
 388         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
 389                 parser->global.report_size = item_udata(item);
 390                 if (parser->global.report_size > 128) {
 391                         hid_err(parser->device, "invalid report_size %d\n",
 392                                         parser->global.report_size);
 393                         return -1;
 394                 }
 395                 return 0;
 396
 397         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
 398                 parser->global.report_count = item_udata(item);
 399                 if (parser->global.report_count > HID_MAX_USAGES) {
 400                         hid_err(parser->device, "invalid report_count %d\n",
 401                                         parser->global.report_count);
 402                         return -1;
 403                 }
 404                 return 0;
 405
 406         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
 407                 parser->global.report_id = item_udata(item);
 408                 if (parser->global.report_id == 0 ||
 409                     parser->global.report_id >= HID_MAX_IDS) {
 410                         hid_err(parser->device, "report_id %u is invalid\n",
 411                                 parser->global.report_id);
 412                         return -1;
 413                 }
 414                 return 0;
 415
 416         default:
 417                 hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
 418                 return -1;
 419         }
 420 }
 421
 422 /*
 423  * Process a local item.
 424  */
 425
 426 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 427 {
 428         __u32 data;
 429         unsigned n;
 430
 431         data = item_udata(item);
 432
 433         switch (item->tag) {
 434         case HID_LOCAL_ITEM_TAG_DELIMITER:
 435
 436                 if (data) {
 437                         /*
 438                          * We treat items before the first delimiter
 439                          * as global to all usage sets (branch 0).
 440                          * In the moment we process only these global
 441                          * items and the first delimiter set.
 442                          */
 443                         if (parser->local.delimiter_depth != 0) {
 444                                 hid_err(parser->device, "nested delimiters\n");
 445                                 return -1;
 446                         }
 447                         parser->local.delimiter_depth++;
 448                         parser->local.delimiter_branch++;
 449                 } else {
 450                         if (parser->local.delimiter_depth < 1) {
 451                                 hid_err(parser->device, "bogus close delimiter\n");
 452                                 return -1;
 453                         }
 454                         parser->local.delimiter_depth--;
 455                 }
 456                 return 0;
 457
 458         case HID_LOCAL_ITEM_TAG_USAGE:
 459
 460                 if (parser->local.delimiter_branch > 1) {
 461                         dbg_hid("alternative usage ignored\n");
 462                         return 0;
 463                 }
 464
 465                 if (item->size <= 2)
 466                         data = (parser->global.usage_page << 16) + data;
 467
 468                 return hid_add_usage(parser, data);
 469
 470         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 471
 472                 if (parser->local.delimiter_branch > 1) {
 473                         dbg_hid("alternative usage ignored\n");
 474                         return 0;
 475                 }
 476
 477                 if (item->size <= 2)
 478                         data = (parser->global.usage_page << 16) + data;
 479
 480                 parser->local.usage_minimum = data;
 481                 return 0;
 482
 483         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 484
 485                 if (parser->local.delimiter_branch > 1) {
 486                         dbg_hid("alternative usage ignored\n");
 487                         return 0;
 488                 }
 489
 490                 if (item->size <= 2)
 491                         data = (parser->global.usage_page << 16) + data;
 492
 493                 for (n = parser->local.usage_minimum; n <= data; n++)
 494                         if (hid_add_usage(parser, n)) {
 495                                 dbg_hid("hid_add_usage failed\n");
 496                                 return -1;
 497                         }
 498                 return 0;
 499
 500         default:
 501
 502                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
 503                 return 0;
 504         }
 505         return 0;
 506 }
 507
 508 /*
 509  * Process a main item.
 510  */
 511
 512 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
 513 {
 514         __u32 data;
 515         int ret;
 516
 517         data = item_udata(item);
 518
 519         switch (item->tag) {
 520         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 521                 ret = open_collection(parser, data & 0xff);
 522                 break;
 523         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 524                 ret = close_collection(parser);
 525                 break;
 526         case HID_MAIN_ITEM_TAG_INPUT:
 527                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
 528                 break;
 529         case HID_MAIN_ITEM_TAG_OUTPUT:
 530                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
 531                 break;
 532         case HID_MAIN_ITEM_TAG_FEATURE:
 533                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
 534                 break;
 535         default:
 536                 hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
 537                 ret = 0;
 538         }
 539
 540         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
 541
 542         return ret;
 543 }
 544
 545 /*
 546  * Process a reserved item.
 547  */
 548
 549 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
 550 {
 551         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
 552         return 0;
 553 }
 554
 555 /*
 556  * Free a report and all registered fields. The field->usage and
 557  * field->value table's are allocated behind the field, so we need
 558  * only to free(field) itself.
 559  */
 560
 561 static void hid_free_report(struct hid_report *report)
 562 {
 563         unsigned n;
 564
 565         for (n = 0; n < report->maxfield; n++)
 566                 kfree(report->field[n]);
 567         kfree(report);
 568 }
 569
 570 /*
 571  * Close report. This function returns the device
 572  * state to the point prior to hid_open_report().
 573  */
 574 static void hid_close_report(struct hid_device *device)
 575 {
 576         unsigned i, j;
 577
 578         for (i = 0; i < HID_REPORT_TYPES; i++) {
 579                 struct hid_report_enum *report_enum = device->report_enum + i;
 580
 581                 for (j = 0; j < HID_MAX_IDS; j++) {
 582                         struct hid_report *report = report_enum->report_id_hash[j];
 583                         if (report)
 584                                 hid_free_report(report);
 585                 }
 586                 memset(report_enum, 0, sizeof(*report_enum));
 587                 INIT_LIST_HEAD(&report_enum->report_list);
 588         }
 589
 590         kfree(device->rdesc);
 591         device->rdesc = NULL;
 592         device->rsize = 0;
 593
 594         kfree(device->collection);
 595         device->collection = NULL;
 596         device->collection_size = 0;
 597         device->maxcollection = 0;
 598         device->maxapplication = 0;
 599
 600         device->status &= ~HID_STAT_PARSED;
 601 }
 602
 603 /*
 604  * Free a device structure, all reports, and all fields.
 605  */
 606
 607 static void hid_device_release(struct device *dev)
 608 {
 609         struct hid_device *hid = container_of(dev, struct hid_device, dev);
 610
 611         hid_close_report(hid);
 612         kfree(hid->dev_rdesc);
 613         kfree(hid);
 614 }
 615
 616 /*
 617  * Fetch a report description item from the data stream. We support long
 618  * items, though they are not used yet.
 619  */
 620
 621 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
 622 {
 623         u8 b;
 624
 625         if ((end - start) <= 0)
 626                 return NULL;
 627
 628         b = *start++;
 629
 630         item->type = (b >> 2) & 3;
 631         item->tag  = (b >> 4) & 15;
 632
 633         if (item->tag == HID_ITEM_TAG_LONG) {
 634
 635                 item->format = HID_ITEM_FORMAT_LONG;
 636
 637                 if ((end - start) < 2)
 638                         return NULL;
 639
 640                 item->size = *start++;
 641                 item->tag  = *start++;
 642
 643                 if ((end - start) < item->size)
 644                         return NULL;
 645
 646                 item->data.longdata = start;
 647                 start += item->size;
 648                 return start;
 649         }
 650
 651         item->format = HID_ITEM_FORMAT_SHORT;
 652         item->size = b & 3;
 653
 654         switch (item->size) {
 655         case 0:
 656                 return start;
 657
 658         case 1:
 659                 if ((end - start) < 1)
 660                         return NULL;
 661                 item->data.u8 = *start++;
 662                 return start;
 663
 664         case 2:
 665                 if ((end - start) < 2)
 666                         return NULL;
 667                 item->data.u16 = get_unaligned_le16(start);
 668                 start = (__u8 *)((__le16 *)start + 1);
 669                 return start;
 670
 671         case 3:
 672                 item->size++;
 673                 if ((end - start) < 4)
 674                         return NULL;
 675                 item->data.u32 = get_unaligned_le32(start);
 676                 start = (__u8 *)((__le32 *)start + 1);
 677                 return start;
 678         }
 679
 680         return NULL;
 681 }
 682
 683 static void hid_scan_input_usage(struct hid_parser *parser, u32 usage)
 684 {
 685         struct hid_device *hid = parser->device;
 686
 687         if (usage == HID_DG_CONTACTID)
 688                 hid->group = HID_GROUP_MULTITOUCH;
 689 }
 690
 691 static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage)
 692 {
 693         if (usage == 0xff0000c5 && parser->global.report_count == 256 &&
 694             parser->global.report_size == 8)
 695                 parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;
 696 }
 697
 698 static void hid_scan_collection(struct hid_parser *parser, unsigned type)
 699 {
 700         struct hid_device *hid = parser->device;
 701
 702         if (((parser->global.usage_page << 16) == HID_UP_SENSOR) &&
 703             type == HID_COLLECTION_PHYSICAL)
 704                 hid->group = HID_GROUP_SENSOR_HUB;
 705 }
 706
 707 static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)
 708 {
 709         __u32 data;
 710         int i;
 711
 712         data = item_udata(item);
 713
 714         switch (item->tag) {
 715         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 716                 hid_scan_collection(parser, data & 0xff);
 717                 break;
 718         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 719                 break;
 720         case HID_MAIN_ITEM_TAG_INPUT:
 721                 /* ignore constant inputs, they will be ignored by hid-input */
 722                 if (data & HID_MAIN_ITEM_CONSTANT)
 723                         break;
 724                 for (i = 0; i < parser->local.usage_index; i++)
 725                         hid_scan_input_usage(parser, parser->local.usage[i]);
 726                 break;
 727         case HID_MAIN_ITEM_TAG_OUTPUT:
 728                 break;
 729         case HID_MAIN_ITEM_TAG_FEATURE:
 730                 for (i = 0; i < parser->local.usage_index; i++)
 731                         hid_scan_feature_usage(parser, parser->local.usage[i]);
 732                 break;
 733         }
 734
 735         /* Reset the local parser environment */
 736         memset(&parser->local, 0, sizeof(parser->local));
 737
 738         return 0;
 739 }
 740
 741 /*
 742  * Scan a report descriptor before the device is added to the bus.
 743  * Sets device groups and other properties that determine what driver
 744  * to load.
 745  */
 746 static int hid_scan_report(struct hid_device *hid)
 747 {
 748         struct hid_parser *parser;
 749         struct hid_item item;
 750         __u8 *start = hid->dev_rdesc;
 751         __u8 *end = start + hid->dev_rsize;
 752         static int (*dispatch_type[])(struct hid_parser *parser,
 753                                       struct hid_item *item) = {
 754                 hid_scan_main,
 755                 hid_parser_global,
 756                 hid_parser_local,
 757                 hid_parser_reserved
 758         };
 759
 760         parser = vzalloc(sizeof(struct hid_parser));
 761         if (!parser)
 762                 return -ENOMEM;
 763
 764         parser->device = hid;
 765         hid->group = HID_GROUP_GENERIC;
 766
 767         /*
 768          * The parsing is simpler than the one in hid_open_report() as we should
 769          * be robust against hid errors. Those errors will be raised by
 770          * hid_open_report() anyway.
 771          */
 772         while ((start = fetch_item(start, end, &item)) != NULL)
 773                 dispatch_type[item.type](parser, &item);
 774
 775         /*
 776          * Handle special flags set during scanning.
 777          */
 778         if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) &&
 779             (hid->group == HID_GROUP_MULTITOUCH))
 780                 hid->group = HID_GROUP_MULTITOUCH_WIN_8;
 781
 782         /*
 783         * Vendor specific handlings
 784         */
 785         if ((hid->vendor == USB_VENDOR_ID_SYNAPTICS) &&
 786             (hid->group == HID_GROUP_GENERIC))
 787                 /* hid-rmi should take care of them, not hid-generic */
 788                 hid->group = HID_GROUP_RMI;
 789
 790         /*
 791          * Vendor specific handlings
 792          */
 793         switch (hid->vendor) {
 794         case USB_VENDOR_ID_WACOM:
 795                 hid->group = HID_GROUP_WACOM;
 796                 break;
 797         }
 798
 799         vfree(parser);
 800         return 0;
 801 }
 802
 803 /**
 804  * hid_parse_report - parse device report
 805  *
 806  * @device: hid device
 807  * @start: report start
 808  * @size: report size
 809  *
 810  * Allocate the device report as read by the bus driver. This function should
 811  * only be called from parse() in ll drivers.
 812  */
 813 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
 814 {
 815         hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
 816         if (!hid->dev_rdesc)
 817                 return -ENOMEM;
 818         hid->dev_rsize = size;
 819         return 0;
 820 }
 821 EXPORT_SYMBOL_GPL(hid_parse_report);
 822
 823 static const char * const hid_report_names[] = {
 824         "HID_INPUT_REPORT",
 825         "HID_OUTPUT_REPORT",
 826         "HID_FEATURE_REPORT",
 827 };
 828 /**
 829  * hid_validate_values - validate existing device report's value indexes
 830  *
 831  * @device: hid device
 832  * @type: which report type to examine
 833  * @id: which report ID to examine (0 for first)
 834  * @field_index: which report field to examine
 835  * @report_counts: expected number of values
 836  *
 837  * Validate the number of values in a given field of a given report, after
 838  * parsing.
 839  */
 840 struct hid_report *hid_validate_values(struct hid_device *hid,
 841                                        unsigned int type, unsigned int id,
 842                                        unsigned int field_index,
 843                                        unsigned int report_counts)
 844 {
 845         struct hid_report *report;
 846
 847         if (type > HID_FEATURE_REPORT) {
 848                 hid_err(hid, "invalid HID report type %u\n", type);
 849                 return NULL;
 850         }
 851
 852         if (id >= HID_MAX_IDS) {
 853                 hid_err(hid, "invalid HID report id %u\n", id);
 854                 return NULL;
 855         }
 856
 857         /*
 858          * Explicitly not using hid_get_report() here since it depends on
 859          * ->numbered being checked, which may not always be the case when
 860          * drivers go to access report values.
 861          */
 862         if (id == 0) {
 863                 /*
 864                  * Validating on id 0 means we should examine the first
 865                  * report in the list.
 866                  */
 867                 report = list_entry(
 868                                 hid->report_enum[type].report_list.next,
 869                                 struct hid_report, list);
 870         } else {
 871                 report = hid->report_enum[type].report_id_hash[id];
 872         }
 873         if (!report) {
 874                 hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
 875                 return NULL;
 876         }
 877         if (report->maxfield <= field_index) {
 878                 hid_err(hid, "not enough fields in %s %u\n",
 879                         hid_report_names[type], id);
 880                 return NULL;
 881         }
 882         if (report->field[field_index]->report_count < report_counts) {
 883                 hid_err(hid, "not enough values in %s %u field %u\n",
 884                         hid_report_names[type], id, field_index);
 885                 return NULL;
 886         }
 887         return report;
 888 }
 889 EXPORT_SYMBOL_GPL(hid_validate_values);
 890
 891 /**
 892  * hid_open_report - open a driver-specific device report
 893  *
 894  * @device: hid device
 895  *
 896  * Parse a report description into a hid_device structure. Reports are
 897  * enumerated, fields are attached to these reports.
 898  * 0 returned on success, otherwise nonzero error value.
 899  *
 900  * This function (or the equivalent hid_parse() macro) should only be
 901  * called from probe() in drivers, before starting the device.
 902  */
 903 int hid_open_report(struct hid_device *device)
 904 {
 905         struct hid_parser *parser;
 906         struct hid_item item;
 907         unsigned int size;
 908         __u8 *start;
 909         __u8 *buf;
 910         __u8 *end;
 911         int ret;
 912         static int (*dispatch_type[])(struct hid_parser *parser,
 913                                       struct hid_item *item) = {
 914                 hid_parser_main,
 915                 hid_parser_global,
 916                 hid_parser_local,
 917                 hid_parser_reserved
 918         };
 919
 920         if (WARN_ON(device->status & HID_STAT_PARSED))
 921                 return -EBUSY;
 922
 923         start = device->dev_rdesc;
 924         if (WARN_ON(!start))
 925                 return -ENODEV;
 926         size = device->dev_rsize;
 927
 928         buf = kmemdup(start, size, GFP_KERNEL);
 929         if (buf == NULL)
 930                 return -ENOMEM;
 931
 932         if (device->driver->report_fixup)
 933                 start = device->driver->report_fixup(device, buf, &size);
 934         else
 935                 start = buf;
 936
 937         start = kmemdup(start, size, GFP_KERNEL);
 938         kfree(buf);
 939         if (start == NULL)
 940                 return -ENOMEM;
 941
 942         device->rdesc = start;
 943         device->rsize = size;
 944
 945         parser = vzalloc(sizeof(struct hid_parser));
 946         if (!parser) {
 947                 ret = -ENOMEM;
 948                 goto err;
 949         }
 950
 951         parser->device = device;
 952
 953         end = start + size;
 954
 955         device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
 956                                      sizeof(struct hid_collection), GFP_KERNEL);
 957         if (!device->collection) {
 958                 ret = -ENOMEM;
 959                 goto err;
 960         }
 961         device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
 962
 963         ret = -EINVAL;
 964         while ((start = fetch_item(start, end, &item)) != NULL) {
 965
 966                 if (item.format != HID_ITEM_FORMAT_SHORT) {
 967                         hid_err(device, "unexpected long global item\n");
 968                         goto err;
 969                 }
 970
 971                 if (dispatch_type[item.type](parser, &item)) {
 972                         hid_err(device, "item %u %u %u %u parsing failed\n",
 973                                 item.format, (unsigned)item.size,
 974                                 (unsigned)item.type, (unsigned)item.tag);
 975                         goto err;
 976                 }
 977
 978                 if (start == end) {
 979                         if (parser->collection_stack_ptr) {
 980                                 hid_err(device, "unbalanced collection at end of report description\n");
 981                                 goto err;
 982                         }
 983                         if (parser->local.delimiter_depth) {
 984                                 hid_err(device, "unbalanced delimiter at end of report description\n");
 985                                 goto err;
 986                         }
 987                         vfree(parser);
 988                         device->status |= HID_STAT_PARSED;
 989                         return 0;
 990                 }
 991         }
 992
 993         hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
 994 err:
 995         vfree(parser);
 996         hid_close_report(device);
 997         return ret;
 998 }
 999 EXPORT_SYMBOL_GPL(hid_open_report);
1000
1001 /*
1002  * Convert a signed n-bit integer to signed 32-bit integer. Common
1003  * cases are done through the compiler, the screwed things has to be
1004  * done by hand.
1005  */
1006
1007 static s32 snto32(__u32 value, unsigned n)
1008 {
1009         switch (n) {
1010         case 8:  return ((__s8)value);
1011         case 16: return ((__s16)value);
1012         case 32: return ((__s32)value);
1013         }
1014         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
1015 }
1016
1017 s32 hid_snto32(__u32 value, unsigned n)
1018 {
1019         return snto32(value, n);
1020 }
1021 EXPORT_SYMBOL_GPL(hid_snto32);
1022
1023 /*
1024  * Convert a signed 32-bit integer to a signed n-bit integer.
1025  */
1026
1027 static u32 s32ton(__s32 value, unsigned n)
1028 {
1029         s32 a = value >> (n - 1);
1030         if (a && a != -1)
1031                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
1032         return value & ((1 << n) - 1);
1033 }
1034
1035 /*
1036  * Extract/implement a data field from/to a little endian report (bit array).
1037  *
1038  * Code sort-of follows HID spec:
1039  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
1040  *
1041  * While the USB HID spec allows unlimited length bit fields in "report
1042  * descriptors", most devices never use more than 16 bits.
1043  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
1044  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
1045  */
1046
1047 static __u32 extract(const struct hid_device *hid, __u8 *report,
1048                      unsigned offset, unsigned n)
1049 {
1050         u64 x;
1051
1052         if (n > 32)
1053                 hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
1054                          n, current->comm);
1055
1056         report += offset >> 3;  /* adjust byte index */
1057         offset &= 7;            /* now only need bit offset into one byte */
1058         x = get_unaligned_le64(report);
1059         x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
1060         return (u32) x;
1061 }
1062
1063 /*
1064  * "implement" : set bits in a little endian bit stream.
1065  * Same concepts as "extract" (see comments above).
1066  * The data mangled in the bit stream remains in little endian
1067  * order the whole time. It make more sense to talk about
1068  * endianness of register values by considering a register
1069  * a "cached" copy of the little endiad bit stream.
1070  */
1071 static void implement(const struct hid_device *hid, __u8 *report,
1072                       unsigned offset, unsigned n, __u32 value)
1073 {
1074         u64 x;
1075         u64 m = (1ULL << n) - 1;
1076
1077         if (n > 32)
1078                 hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
1079                          __func__, n, current->comm);
1080
1081         if (value > m)
1082                 hid_warn(hid, "%s() called with too large value %d! (%s)\n",
1083                          __func__, value, current->comm);
1084         WARN_ON(value > m);
1085         value &= m;
1086
1087         report += offset >> 3;
1088         offset &= 7;
1089
1090         x = get_unaligned_le64(report);
1091         x &= ~(m << offset);
1092         x |= ((u64)value) << offset;
1093         put_unaligned_le64(x, report);
1094 }
1095
1096 /*
1097  * Search an array for a value.
1098  */
1099
1100 static int search(__s32 *array, __s32 value, unsigned n)
1101 {
1102         while (n--) {
1103                 if (*array++ == value)
1104                         return 0;
1105         }
1106         return -1;
1107 }
1108
1109 /**
1110  * hid_match_report - check if driver's raw_event should be called
1111  *
1112  * @hid: hid device
1113  * @report_type: type to match against
1114  *
1115  * compare hid->driver->report_table->report_type to report->type
1116  */
1117 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
1118 {
1119         const struct hid_report_id *id = hid->driver->report_table;
1120
1121         if (!id) /* NULL means all */
1122                 return 1;
1123
1124         for (; id->report_type != HID_TERMINATOR; id++)
1125                 if (id->report_type == HID_ANY_ID ||
1126                                 id->report_type == report->type)
1127                         return 1;
1128         return 0;
1129 }
1130
1131 /**
1132  * hid_match_usage - check if driver's event should be called
1133  *
1134  * @hid: hid device
1135  * @usage: usage to match against
1136  *
1137  * compare hid->driver->usage_table->usage_{type,code} to
1138  * usage->usage_{type,code}
1139  */
1140 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1141 {
1142         const struct hid_usage_id *id = hid->driver->usage_table;
1143
1144         if (!id) /* NULL means all */
1145                 return 1;
1146
1147         for (; id->usage_type != HID_ANY_ID - 1; id++)
1148                 if ((id->usage_hid == HID_ANY_ID ||
1149                                 id->usage_hid == usage->hid) &&
1150                                 (id->usage_type == HID_ANY_ID ||
1151                                 id->usage_type == usage->type) &&
1152                                 (id->usage_code == HID_ANY_ID ||
1153                                  id->usage_code == usage->code))
1154                         return 1;
1155         return 0;
1156 }
1157
1158 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1159                 struct hid_usage *usage, __s32 value, int interrupt)
1160 {
1161         struct hid_driver *hdrv = hid->driver;
1162         int ret;
1163
1164         if (!list_empty(&hid->debug_list))
1165                 hid_dump_input(hid, usage, value);
1166
1167         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1168                 ret = hdrv->event(hid, field, usage, value);
1169                 if (ret != 0) {
1170                         if (ret < 0)
1171                                 hid_err(hid, "%s's event failed with %d\n",
1172                                                 hdrv->name, ret);
1173                         return;
1174                 }
1175         }
1176
1177         if (hid->claimed & HID_CLAIMED_INPUT)
1178                 hidinput_hid_event(hid, field, usage, value);
1179         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1180                 hid->hiddev_hid_event(hid, field, usage, value);
1181 }
1182
1183 /*
1184  * Analyse a received field, and fetch the data from it. The field
1185  * content is stored for next report processing (we do differential
1186  * reporting to the layer).
1187  */
1188
1189 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1190                             __u8 *data, int interrupt)
1191 {
1192         unsigned n;
1193         unsigned count = field->report_count;
1194         unsigned offset = field->report_offset;
1195         unsigned size = field->report_size;
1196         __s32 min = field->logical_minimum;
1197         __s32 max = field->logical_maximum;
1198         __s32 *value;
1199
1200         value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1201         if (!value)
1202                 return;
1203
1204         for (n = 0; n < count; n++) {
1205
1206                 value[n] = min < 0 ?
1207                         snto32(extract(hid, data, offset + n * size, size),
1208                                size) :
1209                         extract(hid, data, offset + n * size, size);
1210
1211                 /* Ignore report if ErrorRollOver */
1212                 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1213                     value[n] >= min && value[n] <= max &&
1214                     field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1215                         goto exit;
1216         }
1217
1218         for (n = 0; n < count; n++) {
1219
1220                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1221                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1222                         continue;
1223                 }
1224
1225                 if (field->value[n] >= min && field->value[n] <= max
1226                         && field->usage[field->value[n] - min].hid
1227                         && search(value, field->value[n], count))
1228                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1229
1230                 if (value[n] >= min && value[n] <= max
1231                         && field->usage[value[n] - min].hid
1232                         && search(field->value, value[n], count))
1233                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1234         }
1235
1236         memcpy(field->value, value, count * sizeof(__s32));
1237 exit:
1238         kfree(value);
1239 }
1240
1241 /*
1242  * Output the field into the report.
1243  */
1244
1245 static void hid_output_field(const struct hid_device *hid,
1246                              struct hid_field *field, __u8 *data)
1247 {
1248         unsigned count = field->report_count;
1249         unsigned offset = field->report_offset;
1250         unsigned size = field->report_size;
1251         unsigned n;
1252
1253         for (n = 0; n < count; n++) {
1254                 if (field->logical_minimum < 0) /* signed values */
1255                         implement(hid, data, offset + n * size, size,
1256                                   s32ton(field->value[n], size));
1257                 else                            /* unsigned values */
1258                         implement(hid, data, offset + n * size, size,
1259                                   field->value[n]);
1260         }
1261 }
1262
1263 /*
1264  * Create a report. 'data' has to be allocated using
1265  * hid_alloc_report_buf() so that it has proper size.
1266  */
1267
1268 void hid_output_report(struct hid_report *report, __u8 *data)
1269 {
1270         unsigned n;
1271
1272         if (report->id > 0)
1273                 *data++ = report->id;
1274
1275         memset(data, 0, ((report->size - 1) >> 3) + 1);
1276         for (n = 0; n < report->maxfield; n++)
1277                 hid_output_field(report->device, report->field[n], data);
1278 }
1279 EXPORT_SYMBOL_GPL(hid_output_report);
1280
1281 static int hid_report_len(struct hid_report *report)
1282 {
1283         /* equivalent to DIV_ROUND_UP(report->size, 8) + !!(report->id > 0) */
1284         return ((report->size - 1) >> 3) + 1 + (report->id > 0);
1285 }
1286
1287 /*
1288  * Allocator for buffer that is going to be passed to hid_output_report()
1289  */
1290 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
1291 {
1292         /*
1293          * 7 extra bytes are necessary to achieve proper functionality
1294          * of implement() working on 8 byte chunks
1295          */
1296
1297         int len = hid_report_len(report) + 7;
1298
1299         return kmalloc(len, flags);
1300 }
1301 EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
1302
1303 /*
1304  * Set a field value. The report this field belongs to has to be
1305  * created and transferred to the device, to set this value in the
1306  * device.
1307  */
1308
1309 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1310 {
1311         unsigned size;
1312
1313         if (!field)
1314                 return -1;
1315
1316         size = field->report_size;
1317
1318         hid_dump_input(field->report->device, field->usage + offset, value);
1319
1320         if (offset >= field->report_count) {
1321                 hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1322                                 offset, field->report_count);
1323                 return -1;
1324         }
1325         if (field->logical_minimum < 0) {
1326                 if (value != snto32(s32ton(value, size), size)) {
1327                         hid_err(field->report->device, "value %d is out of range\n", value);
1328                         return -1;
1329                 }
1330         }
1331         field->value[offset] = value;
1332         return 0;
1333 }
1334 EXPORT_SYMBOL_GPL(hid_set_field);
1335
1336 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1337                 const u8 *data)
1338 {
1339         struct hid_report *report;
1340         unsigned int n = 0;     /* Normally report number is 0 */
1341
1342         /* Device uses numbered reports, data[0] is report number */
1343         if (report_enum->numbered)
1344                 n = *data;
1345
1346         report = report_enum->report_id_hash[n];
1347         if (report == NULL)
1348                 dbg_hid("undefined report_id %u received\n", n);
1349
1350         return report;
1351 }
1352
1353 /*
1354  * Implement a generic .request() callback, using .raw_request()
1355  * DO NOT USE in hid drivers directly, but through hid_hw_request instead.
1356  */
1357 void __hid_request(struct hid_device *hid, struct hid_report *report,
1358                 int reqtype)
1359 {
1360         char *buf;
1361         int ret;
1362         int len;
1363
1364         buf = hid_alloc_report_buf(report, GFP_KERNEL);
1365         if (!buf)
1366                 return;
1367
1368         len = hid_report_len(report);
1369
1370         if (reqtype == HID_REQ_SET_REPORT)
1371                 hid_output_report(report, buf);
1372
1373         ret = hid->ll_driver->raw_request(hid, report->id, buf, len,
1374                                           report->type, reqtype);
1375         if (ret < 0) {
1376                 dbg_hid("unable to complete request: %d\n", ret);
1377                 goto out;
1378         }
1379
1380         if (reqtype == HID_REQ_GET_REPORT)
1381                 hid_input_report(hid, report->type, buf, ret, 0);
1382
1383 out:
1384         kfree(buf);
1385 }
1386 EXPORT_SYMBOL_GPL(__hid_request);
1387
1388 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1389                 int interrupt)
1390 {
1391         struct hid_report_enum *report_enum = hid->report_enum + type;
1392         struct hid_report *report;
1393         struct hid_driver *hdrv;
1394         unsigned int a;
1395         int rsize, csize = size;
1396         u8 *cdata = data;
1397         int ret = 0;
1398
1399         report = hid_get_report(report_enum, data);
1400         if (!report)
1401                 goto out;
1402
1403         if (report_enum->numbered) {
1404                 cdata++;
1405                 csize--;
1406         }
1407
1408         rsize = ((report->size - 1) >> 3) + 1;
1409
1410         if (rsize > HID_MAX_BUFFER_SIZE)
1411                 rsize = HID_MAX_BUFFER_SIZE;
1412
1413         if (csize < rsize) {
1414                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1415                                 csize, rsize);
1416                 memset(cdata + csize, 0, rsize - csize);
1417         }
1418
1419         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1420                 hid->hiddev_report_event(hid, report);
1421         if (hid->claimed & HID_CLAIMED_HIDRAW) {
1422                 ret = hidraw_report_event(hid, data, size);
1423                 if (ret)
1424                         goto out;
1425         }
1426
1427         if (hid->claimed != HID_CLAIMED_HIDRAW && report->maxfield) {
1428                 for (a = 0; a < report->maxfield; a++)
1429                         hid_input_field(hid, report->field[a], cdata, interrupt);
1430                 hdrv = hid->driver;
1431                 if (hdrv && hdrv->report)
1432                         hdrv->report(hid, report);
1433         }
1434
1435         if (hid->claimed & HID_CLAIMED_INPUT)
1436                 hidinput_report_event(hid, report);
1437 out:
1438         return ret;
1439 }
1440 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1441
1442 /**
1443  * hid_input_report - report data from lower layer (usb, bt...)
1444  *
1445  * @hid: hid device
1446  * @type: HID report type (HID_*_REPORT)
1447  * @data: report contents
1448  * @size: size of data parameter
1449  * @interrupt: distinguish between interrupt and control transfers
1450  *
1451  * This is data entry for lower layers.
1452  */
1453 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1454 {
1455         struct hid_report_enum *report_enum;
1456         struct hid_driver *hdrv;
1457         struct hid_report *report;
1458         int ret = 0;
1459
1460         if (!hid)
1461                 return -ENODEV;
1462
1463         if (down_trylock(&hid->driver_input_lock))
1464                 return -EBUSY;
1465
1466         if (!hid->driver) {
1467                 ret = -ENODEV;
1468                 goto unlock;
1469         }
1470         report_enum = hid->report_enum + type;
1471         hdrv = hid->driver;
1472
1473         if (!size) {
1474                 dbg_hid("empty report\n");
1475                 ret = -1;
1476                 goto unlock;
1477         }
1478
1479         /* Avoid unnecessary overhead if debugfs is disabled */
1480         if (!list_empty(&hid->debug_list))
1481                 hid_dump_report(hid, type, data, size);
1482
1483         report = hid_get_report(report_enum, data);
1484
1485         if (!report) {
1486                 ret = -1;
1487                 goto unlock;
1488         }
1489
1490         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1491                 ret = hdrv->raw_event(hid, report, data, size);
1492                 if (ret < 0)
1493                         goto unlock;
1494         }
1495
1496         ret = hid_report_raw_event(hid, type, data, size, interrupt);
1497
1498 unlock:
1499         up(&hid->driver_input_lock);
1500         return ret;
1501 }
1502 EXPORT_SYMBOL_GPL(hid_input_report);
1503
1504 static bool hid_match_one_id(struct hid_device *hdev,
1505                 const struct hid_device_id *id)
1506 {
1507         return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1508                 (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1509                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1510                 (id->product == HID_ANY_ID || id->product == hdev->product);
1511 }
1512
1513 const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1514                 const struct hid_device_id *id)
1515 {
1516         for (; id->bus; id++)
1517                 if (hid_match_one_id(hdev, id))
1518                         return id;
1519
1520         return NULL;
1521 }
1522
1523 static const struct hid_device_id hid_hiddev_list[] = {
1524         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1525         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1526         { }
1527 };
1528
1529 static bool hid_hiddev(struct hid_device *hdev)
1530 {
1531         return !!hid_match_id(hdev, hid_hiddev_list);
1532 }
1533
1534
1535 static ssize_t
1536 read_report_descriptor(struct file *filp, struct kobject *kobj,
1537                 struct bin_attribute *attr,
1538                 char *buf, loff_t off, size_t count)
1539 {
1540         struct device *dev = container_of(kobj, struct device, kobj);
1541         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1542
1543         if (off >= hdev->rsize)
1544                 return 0;
1545
1546         if (off + count > hdev->rsize)
1547                 count = hdev->rsize - off;
1548
1549         memcpy(buf, hdev->rdesc + off, count);
1550
1551         return count;
1552 }
1553
1554 static struct bin_attribute dev_bin_attr_report_desc = {
1555         .attr = { .name = "report_descriptor", .mode = 0444 },
1556         .read = read_report_descriptor,
1557         .size = HID_MAX_DESCRIPTOR_SIZE,
1558 };
1559
1560 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1561 {
1562         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1563                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1564                 "Multi-Axis Controller"
1565         };
1566         const char *type, *bus;
1567         char buf[64];
1568         unsigned int i;
1569         int len;
1570         int ret;
1571
1572         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1573                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1574         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1575                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1576         if (hdev->bus != BUS_USB)
1577                 connect_mask &= ~HID_CONNECT_HIDDEV;
1578         if (hid_hiddev(hdev))
1579                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1580
1581         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1582                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1583                 hdev->claimed |= HID_CLAIMED_INPUT;
1584
1585         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1586                         !hdev->hiddev_connect(hdev,
1587                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1588                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1589         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1590                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1591
1592         /* Drivers with the ->raw_event callback set are not required to connect
1593          * to any other listener. */
1594         if (!hdev->claimed && !hdev->driver->raw_event) {
1595                 hid_err(hdev, "device has no listeners, quitting\n");
1596                 return -ENODEV;
1597         }
1598
1599         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1600                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1601                 hdev->ff_init(hdev);
1602
1603         len = 0;
1604         if (hdev->claimed & HID_CLAIMED_INPUT)
1605                 len += sprintf(buf + len, "input");
1606         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1607                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1608                                 hdev->minor);
1609         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1610                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1611                                 ((struct hidraw *)hdev->hidraw)->minor);
1612
1613         type = "Device";
1614         for (i = 0; i < hdev->maxcollection; i++) {
1615                 struct hid_collection *col = &hdev->collection[i];
1616                 if (col->type == HID_COLLECTION_APPLICATION &&
1617                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1618                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1619                         type = types[col->usage & 0xffff];
1620                         break;
1621                 }
1622         }
1623
1624         switch (hdev->bus) {
1625         case BUS_USB:
1626                 bus = "USB";
1627                 break;
1628         case BUS_BLUETOOTH:
1629                 bus = "BLUETOOTH";
1630                 break;
1631         default:
1632                 bus = "<UNKNOWN>";
1633         }
1634
1635         ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1636         if (ret)
1637                 hid_warn(hdev,
1638                          "can't create sysfs report descriptor attribute err: %d\n", ret);
1639
1640         hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1641                  buf, bus, hdev->version >> 8, hdev->version & 0xff,
1642                  type, hdev->name, hdev->phys);
1643
1644         return 0;
1645 }
1646 EXPORT_SYMBOL_GPL(hid_connect);
1647
1648 void hid_disconnect(struct hid_device *hdev)
1649 {
1650         device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1651         if (hdev->claimed & HID_CLAIMED_INPUT)
1652                 hidinput_disconnect(hdev);
1653         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1654                 hdev->hiddev_disconnect(hdev);
1655         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1656                 hidraw_disconnect(hdev);
1657 }
1658 EXPORT_SYMBOL_GPL(hid_disconnect);
1659
1660 /*
1661  * A list of devices for which there is a specialized driver on HID bus.
1662  *
1663  * Please note that for multitouch devices (driven by hid-multitouch driver),
1664  * there is a proper autodetection and autoloading in place (based on presence
1665  * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1666  * as we are doing the right thing in hid_scan_usage().
1667  *
1668  * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1669  * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1670  * used as a driver. See hid_scan_report().
1671  */
1672 static const struct hid_device_id hid_have_special_driver[] = {
1673         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1674         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1675         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1676         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1677         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0xf705) },
1678         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1679         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1680         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1681         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1682         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1683         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1684         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1685         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1686         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1687         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1688         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1689         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1690         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1691         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1692         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1693         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1694         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1695         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1696         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1697         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1698         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1699         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1700         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1701         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1702         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1703         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1704         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1705         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1706         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1707         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1708         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1709         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1710         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1711         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1712         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1713         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1714         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1715         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1716         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1717         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1718         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1719         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1720         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1721         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1722         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1723         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1724         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1725         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1726         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1727         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1728         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1729         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1730         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1731         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1732         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1733         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1734         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1735         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1736         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1737         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1738         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1739         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1740         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1741         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1742         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1743         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1744         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1745         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1746         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1747         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1748         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1749         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1750         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1751         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1752         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1753         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_JIS) },
1754         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1755         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1756         { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1757         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1758         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1759         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1760         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1761         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1762         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1763         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1764         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1765         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1766         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1767         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_CP2112) },
1768         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1769         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1770         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1771         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1772         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1773         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1774         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1775         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1776         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
1777         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
1778         { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1779         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1780         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1781         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1782         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1783         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1784         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1785         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1786         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1787         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1788         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1789         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
1790         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
1791         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
1792         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
1793         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
1794         { HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_580) },
1795         { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1796         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1797         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1798         { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1799         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
1800         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_MANTICORE) },
1801         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
1802         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1803         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1804         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1805         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1806         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1807         { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1808 #if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
1809         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1810 #endif
1811         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1812         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1813         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1814         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1815         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1816         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1817         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1818         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1819         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1820         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1821         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1822         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1823         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1824         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1825         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1826         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1827         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1828         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1829         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1830         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1831         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1832         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_VIBRATION_WHEEL) },
1833         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1834         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1835         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1836         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1837 #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1838         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1839         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1840 #endif
1841         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1842         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1843         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1844         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1845         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1846         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1847         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1848         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1849         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1850         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1851         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1852         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1853         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1854         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1855         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_OFFICE_KB) },
1856         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1857         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1858         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1859         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1860         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1861         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1862         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1863         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1864         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1865         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1866         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1867         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1868         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1869         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1870         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1871         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1872         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1873         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1874         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1875         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1876         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1877         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1878         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1879         { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1880 #if IS_ENABLED(CONFIG_HID_ROCCAT)
1881         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1882         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1883         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKUFX) },
1884         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1885         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1886         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
1887         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
1888         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEXTD) },
1889         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1890         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
1891         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1892         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1893         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK) },
1894         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_GLOW) },
1895         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_PRO) },
1896         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1897 #endif
1898 #if IS_ENABLED(CONFIG_HID_SAITEK)
1899         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1900         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7) },
1901         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_MMO7) },
1902 #endif
1903         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1904         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1905         { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1906         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
1907         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
1908         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1909         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1910         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1911         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1912         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
1913         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
1914         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1915         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
1916         { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
1917         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1918         { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
1919         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1920         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1921         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1922         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1923         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1924         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1925         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1926         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1927         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1928         { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1929         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1930         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1931         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1932         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1933         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1934         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1935         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1936         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1937         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1938         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1939         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1940         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1941         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1942         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1943         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1944         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1945         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1946         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1947         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1948         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1949         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1950         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1951         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1952         { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1953         { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
1954         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1955         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1956         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1957
1958         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1959         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1960         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1961         { }
1962 };
1963
1964 struct hid_dynid {
1965         struct list_head list;
1966         struct hid_device_id id;
1967 };
1968
1969 /**
1970  * store_new_id - add a new HID device ID to this driver and re-probe devices
1971  * @driver: target device driver
1972  * @buf: buffer for scanning device ID data
1973  * @count: input size
1974  *
1975  * Adds a new dynamic hid device ID to this driver,
1976  * and causes the driver to probe for all devices again.
1977  */
1978 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1979                 size_t count)
1980 {
1981         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1982         struct hid_dynid *dynid;
1983         __u32 bus, vendor, product;
1984         unsigned long driver_data = 0;
1985         int ret;
1986
1987         ret = sscanf(buf, "%x %x %x %lx",
1988                         &bus, &vendor, &product, &driver_data);
1989         if (ret < 3)
1990                 return -EINVAL;
1991
1992         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1993         if (!dynid)
1994                 return -ENOMEM;
1995
1996         dynid->id.bus = bus;
1997         dynid->id.group = HID_GROUP_ANY;
1998         dynid->id.vendor = vendor;
1999         dynid->id.product = product;
2000         dynid->id.driver_data = driver_data;
2001
2002         spin_lock(&hdrv->dyn_lock);
2003         list_add_tail(&dynid->list, &hdrv->dyn_list);
2004         spin_unlock(&hdrv->dyn_lock);
2005
2006         ret = driver_attach(&hdrv->driver);
2007
2008         return ret ? : count;
2009 }
2010 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
2011
2012 static void hid_free_dynids(struct hid_driver *hdrv)
2013 {
2014         struct hid_dynid *dynid, *n;
2015
2016         spin_lock(&hdrv->dyn_lock);
2017         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
2018                 list_del(&dynid->list);
2019                 kfree(dynid);
2020         }
2021         spin_unlock(&hdrv->dyn_lock);
2022 }
2023
2024 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
2025                 struct hid_driver *hdrv)
2026 {
2027         struct hid_dynid *dynid;
2028
2029         spin_lock(&hdrv->dyn_lock);
2030         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
2031                 if (hid_match_one_id(hdev, &dynid->id)) {
2032                         spin_unlock(&hdrv->dyn_lock);
2033                         return &dynid->id;
2034                 }
2035         }
2036         spin_unlock(&hdrv->dyn_lock);
2037
2038         return hid_match_id(hdev, hdrv->id_table);
2039 }
2040
2041 static int hid_bus_match(struct device *dev, struct device_driver *drv)
2042 {
2043         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
2044         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2045
2046         return hid_match_device(hdev, hdrv) != NULL;
2047 }
2048
2049 static int hid_device_probe(struct device *dev)
2050 {
2051         struct hid_driver *hdrv = container_of(dev->driver,
2052                         struct hid_driver, driver);
2053         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2054         const struct hid_device_id *id;
2055         int ret = 0;
2056
2057         if (down_interruptible(&hdev->driver_lock))
2058                 return -EINTR;
2059         if (down_interruptible(&hdev->driver_input_lock)) {
2060                 ret = -EINTR;
2061                 goto unlock_driver_lock;
2062         }
2063         hdev->io_started = false;
2064
2065         if (!hdev->driver) {
2066                 id = hid_match_device(hdev, hdrv);
2067                 if (id == NULL) {
2068                         ret = -ENODEV;
2069                         goto unlock;
2070                 }
2071
2072                 hdev->driver = hdrv;
2073                 if (hdrv->probe) {
2074                         ret = hdrv->probe(hdev, id);
2075                 } else { /* default probe */
2076                         ret = hid_open_report(hdev);
2077                         if (!ret)
2078                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
2079                 }
2080                 if (ret) {
2081                         hid_close_report(hdev);
2082                         hdev->driver = NULL;
2083                 }
2084         }
2085 unlock:
2086         if (!hdev->io_started)
2087                 up(&hdev->driver_input_lock);
2088 unlock_driver_lock:
2089         up(&hdev->driver_lock);
2090         return ret;
2091 }
2092
2093 static int hid_device_remove(struct device *dev)
2094 {
2095         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2096         struct hid_driver *hdrv;
2097         int ret = 0;
2098
2099         if (down_interruptible(&hdev->driver_lock))
2100                 return -EINTR;
2101         if (down_interruptible(&hdev->driver_input_lock)) {
2102                 ret = -EINTR;
2103                 goto unlock_driver_lock;
2104         }
2105         hdev->io_started = false;
2106
2107         hdrv = hdev->driver;
2108         if (hdrv) {
2109                 if (hdrv->remove)
2110                         hdrv->remove(hdev);
2111                 else /* default remove */
2112                         hid_hw_stop(hdev);
2113                 hid_close_report(hdev);
2114                 hdev->driver = NULL;
2115         }
2116
2117         if (!hdev->io_started)
2118                 up(&hdev->driver_input_lock);
2119 unlock_driver_lock:
2120         up(&hdev->driver_lock);
2121         return ret;
2122 }
2123
2124 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
2125                              char *buf)
2126 {
2127         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2128         int len;
2129
2130         len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
2131                        hdev->bus, hdev->group, hdev->vendor, hdev->product);
2132
2133         return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
2134 }
2135 static DEVICE_ATTR_RO(modalias);
2136
2137 static struct attribute *hid_dev_attrs[] = {
2138         &dev_attr_modalias.attr,
2139         NULL,
2140 };
2141 ATTRIBUTE_GROUPS(hid_dev);
2142
2143 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
2144 {
2145         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2146
2147         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
2148                         hdev->bus, hdev->vendor, hdev->product))
2149                 return -ENOMEM;
2150
2151         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
2152                 return -ENOMEM;
2153
2154         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
2155                 return -ENOMEM;
2156
2157         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
2158                 return -ENOMEM;
2159
2160         if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
2161                            hdev->bus, hdev->group, hdev->vendor, hdev->product))
2162                 return -ENOMEM;
2163
2164         return 0;
2165 }
2166
2167 static struct bus_type hid_bus_type = {
2168         .name           = "hid",
2169         .dev_groups     = hid_dev_groups,
2170         .match          = hid_bus_match,
2171         .probe          = hid_device_probe,
2172         .remove         = hid_device_remove,
2173         .uevent         = hid_uevent,
2174 };
2175
2176 /* a list of devices that shouldn't be handled by HID core at all */
2177 static const struct hid_device_id hid_ignore_list[] = {
2178         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
2179         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
2180         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
2181         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
2182         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
2183         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
2184         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
2185         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
2186         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
2187         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
2188         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
2189         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
2190         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
2191         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
2192         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
2193         { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
2194         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
2195         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
2196         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
2197         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI4713) },
2198         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
2199         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
2200         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
2201         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
2202         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
2203         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
2204         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
2205         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
2206         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
2207         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
2208         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
2209         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
2210         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
2211         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
2212         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
2213         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
2214         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
2215         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
2216         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
2217         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
2218         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
2219         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
2220         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2221         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2222         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2223         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2224         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2225         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2226         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2227         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2228         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2229         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2230         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2231         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2232         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2233         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2234         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2235         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2236         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2237         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2238         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2239         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2240         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2241         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2242         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2243         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2244         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2245         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2246         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2247         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2248         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2249         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2250         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2251         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2252         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2253         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2254         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2255         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2256         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2257         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2258         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2259         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2260         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2261         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2262         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2263         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2264         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2265         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2266         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2267         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2268         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2269         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2270         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2271         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2272         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2273         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2274         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
2275         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
2276         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2277         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2278         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2279         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2280         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2281         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2282         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2283         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2284         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2285         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2286         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2287         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2288         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2289         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2290         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2291         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2292         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2293         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2294         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2295         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2296         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2297         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2298         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2299         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2300         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2301         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2302         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2303         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2304         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2305         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2306         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2307         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2308         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2309         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2310         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2311         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2312         { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2313         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2314         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2315         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2316         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2317         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2318         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2319         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2320         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2321         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2322         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2323         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2324         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2325         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2326         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2327         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2328         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2329         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2330         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2331         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2332         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2333         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2334 #if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2335         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2336         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2337         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2338         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2339         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2340         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2341         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2342         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2343 #endif
2344         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2345         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2346         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2347         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2348         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2349         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2350         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2351         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2352         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2353         { HID_USB_DEVICE(USB_VENDOR_ID_RISO_KAGAKU, USB_DEVICE_ID_RI_KA_WEBMAIL) },
2354         { }
2355 };
2356
2357 /**
2358  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2359  *
2360  * There are composite devices for which we want to ignore only a certain
2361  * interface. This is a list of devices for which only the mouse interface will
2362  * be ignored. This allows a dedicated driver to take care of the interface.
2363  */
2364 static const struct hid_device_id hid_mouse_ignore_list[] = {
2365         /* appletouch driver */
2366         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2367         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2368         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2369         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2370         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2371         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2372         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2373         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2374         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2375         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2376         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2377         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2378         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2379         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2380         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2381         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2382         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2383         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2384         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2385         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2386         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2387         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2388         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2389         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2390         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2391         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2392         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2393         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2394         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2395         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2396         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2397         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2398         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2399         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2400         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2401         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2402         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2403         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2404         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2405         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2406         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2407         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2408         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2409         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2410         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2411         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2412         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2413         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2414         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2415         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2416         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2417         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2418         { }
2419 };
2420
2421 bool hid_ignore(struct hid_device *hdev)
2422 {
2423         if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2424                 return false;
2425         if (hdev->quirks & HID_QUIRK_IGNORE)
2426                 return true;
2427
2428         switch (hdev->vendor) {
2429         case USB_VENDOR_ID_CODEMERCS:
2430                 /* ignore all Code Mercenaries IOWarrior devices */
2431                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2432                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2433                         return true;
2434                 break;
2435         case USB_VENDOR_ID_LOGITECH:
2436                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2437                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2438                         return true;
2439                 /*
2440                  * The Keene FM transmitter USB device has the same USB ID as
2441                  * the Logitech AudioHub Speaker, but it should ignore the hid.
2442                  * Check if the name is that of the Keene device.
2443                  * For reference: the name of the AudioHub is
2444                  * "HOLTEK  AudioHub Speaker".
2445                  */
2446                 if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2447                         !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2448                                 return true;
2449                 break;
2450         case USB_VENDOR_ID_SOUNDGRAPH:
2451                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2452                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2453                         return true;
2454                 break;
2455         case USB_VENDOR_ID_HANWANG:
2456                 if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2457                     hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2458                         return true;
2459                 break;
2460         case USB_VENDOR_ID_JESS:
2461                 if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2462                                 hdev->type == HID_TYPE_USBNONE)
2463                         return true;
2464                 break;
2465         case USB_VENDOR_ID_VELLEMAN:
2466                 /* These are not HID devices.  They are handled by comedi. */
2467                 if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2468                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2469                     (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2470                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2471                         return true;
2472                 break;
2473         case USB_VENDOR_ID_ATMEL_V_USB:
2474                 /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2475                  * it has the same USB ID as many Atmel V-USB devices. This
2476                  * usb radio is handled by radio-ma901.c driver so we want
2477                  * ignore the hid. Check the name, bus, product and ignore
2478                  * if we have MA901 usb radio.
2479                  */
2480                 if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2481                         hdev->bus == BUS_USB &&
2482                         strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2483                         return true;
2484                 break;
2485         }
2486
2487         if (hdev->type == HID_TYPE_USBMOUSE &&
2488                         hid_match_id(hdev, hid_mouse_ignore_list))
2489                 return true;
2490
2491         return !!hid_match_id(hdev, hid_ignore_list);
2492 }
2493 EXPORT_SYMBOL_GPL(hid_ignore);
2494
2495 int hid_add_device(struct hid_device *hdev)
2496 {
2497         static atomic_t id = ATOMIC_INIT(0);
2498         int ret;
2499
2500         if (WARN_ON(hdev->status & HID_STAT_ADDED))
2501                 return -EBUSY;
2502
2503         /* we need to kill them here, otherwise they will stay allocated to
2504          * wait for coming driver */
2505         if (hid_ignore(hdev))
2506                 return -ENODEV;
2507
2508         /*
2509          * Check for the mandatory transport channel.
2510          */
2511          if (!hdev->ll_driver->raw_request) {
2512                 hid_err(hdev, "transport driver missing .raw_request()\n");
2513                 return -EINVAL;
2514          }
2515
2516         /*
2517          * Read the device report descriptor once and use as template
2518          * for the driver-specific modifications.
2519          */
2520         ret = hdev->ll_driver->parse(hdev);
2521         if (ret)
2522                 return ret;
2523         if (!hdev->dev_rdesc)
2524                 return -ENODEV;
2525
2526         /*
2527          * Scan generic devices for group information
2528          */
2529         if (hid_ignore_special_drivers ||
2530             !hid_match_id(hdev, hid_have_special_driver)) {
2531                 ret = hid_scan_report(hdev);
2532                 if (ret)
2533                         hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2534         }
2535
2536         /* XXX hack, any other cleaner solution after the driver core
2537          * is converted to allow more than 20 bytes as the device name? */
2538         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2539                      hdev->vendor, hdev->product, atomic_inc_return(&id));
2540
2541         hid_debug_register(hdev, dev_name(&hdev->dev));
2542         ret = device_add(&hdev->dev);
2543         if (!ret)
2544                 hdev->status |= HID_STAT_ADDED;
2545         else
2546                 hid_debug_unregister(hdev);
2547
2548         return ret;
2549 }
2550 EXPORT_SYMBOL_GPL(hid_add_device);
2551
2552 /**
2553  * hid_allocate_device - allocate new hid device descriptor
2554  *
2555  * Allocate and initialize hid device, so that hid_destroy_device might be
2556  * used to free it.
2557  *
2558  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2559  * error value.
2560  */
2561 struct hid_device *hid_allocate_device(void)
2562 {
2563         struct hid_device *hdev;
2564         int ret = -ENOMEM;
2565
2566         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2567         if (hdev == NULL)
2568                 return ERR_PTR(ret);
2569
2570         device_initialize(&hdev->dev);
2571         hdev->dev.release = hid_device_release;
2572         hdev->dev.bus = &hid_bus_type;
2573
2574         hid_close_report(hdev);
2575
2576         init_waitqueue_head(&hdev->debug_wait);
2577         INIT_LIST_HEAD(&hdev->debug_list);
2578         spin_lock_init(&hdev->debug_list_lock);
2579         sema_init(&hdev->driver_lock, 1);
2580         sema_init(&hdev->driver_input_lock, 1);
2581
2582         return hdev;
2583 }
2584 EXPORT_SYMBOL_GPL(hid_allocate_device);
2585
2586 static void hid_remove_device(struct hid_device *hdev)
2587 {
2588         if (hdev->status & HID_STAT_ADDED) {
2589                 device_del(&hdev->dev);
2590                 hid_debug_unregister(hdev);
2591                 hdev->status &= ~HID_STAT_ADDED;
2592         }
2593         kfree(hdev->dev_rdesc);
2594         hdev->dev_rdesc = NULL;
2595         hdev->dev_rsize = 0;
2596 }
2597
2598 /**
2599  * hid_destroy_device - free previously allocated device
2600  *
2601  * @hdev: hid device
2602  *
2603  * If you allocate hid_device through hid_allocate_device, you should ever
2604  * free by this function.
2605  */
2606 void hid_destroy_device(struct hid_device *hdev)
2607 {
2608         hid_remove_device(hdev);
2609         put_device(&hdev->dev);
2610 }
2611 EXPORT_SYMBOL_GPL(hid_destroy_device);
2612
2613 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2614                 const char *mod_name)
2615 {
2616         int ret;
2617
2618         hdrv->driver.name = hdrv->name;
2619         hdrv->driver.bus = &hid_bus_type;
2620         hdrv->driver.owner = owner;
2621         hdrv->driver.mod_name = mod_name;
2622
2623         INIT_LIST_HEAD(&hdrv->dyn_list);
2624         spin_lock_init(&hdrv->dyn_lock);
2625
2626         ret = driver_register(&hdrv->driver);
2627         if (ret)
2628                 return ret;
2629
2630         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2631         if (ret)
2632                 driver_unregister(&hdrv->driver);
2633
2634         return ret;
2635 }
2636 EXPORT_SYMBOL_GPL(__hid_register_driver);
2637
2638 void hid_unregister_driver(struct hid_driver *hdrv)
2639 {
2640         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2641         driver_unregister(&hdrv->driver);
2642         hid_free_dynids(hdrv);
2643 }
2644 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2645
2646 int hid_check_keys_pressed(struct hid_device *hid)
2647 {
2648         struct hid_input *hidinput;
2649         int i;
2650
2651         if (!(hid->claimed & HID_CLAIMED_INPUT))
2652                 return 0;
2653
2654         list_for_each_entry(hidinput, &hid->inputs, list) {
2655                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2656                         if (hidinput->input->key[i])
2657                                 return 1;
2658         }
2659
2660         return 0;
2661 }
2662
2663 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2664
2665 static int __init hid_init(void)
2666 {
2667         int ret;
2668
2669         if (hid_debug)
2670                 pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2671                         "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2672
2673         ret = bus_register(&hid_bus_type);
2674         if (ret) {
2675                 pr_err("can't register hid bus\n");
2676                 goto err;
2677         }
2678
2679         ret = hidraw_init();
2680         if (ret)
2681                 goto err_bus;
2682
2683         hid_debug_init();
2684
2685         return 0;
2686 err_bus:
2687         bus_unregister(&hid_bus_type);
2688 err:
2689         return ret;
2690 }
2691
2692 static void __exit hid_exit(void)
2693 {
2694         hid_debug_exit();
2695         hidraw_exit();
2696         bus_unregister(&hid_bus_type);
2697 }
2698
2699 module_init(hid_init);
2700 module_exit(hid_exit);
2701
2702 MODULE_AUTHOR("Andreas Gal");
2703 MODULE_AUTHOR("Vojtech Pavlik");
2704 MODULE_AUTHOR("Jiri Kosina");
2705 MODULE_LICENSE(DRIVER_LICENSE);
2706