drivers/hid/hid-core.c

   1 /*
   2  *  HID support for Linux
   3  *
   4  *  Copyright (c) 1999 Andreas Gal
   5  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
   6  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
   7  *  Copyright (c) 2006-2012 Jiri Kosina
   8  */
   9
  10 /*
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the Free
  13  * Software Foundation; either version 2 of the License, or (at your option)
  14  * any later version.
  15  */
  16
  17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  18
  19 #include <linux/module.h>
  20 #include <linux/slab.h>
  21 #include <linux/init.h>
  22 #include <linux/kernel.h>
  23 #include <linux/list.h>
  24 #include <linux/mm.h>
  25 #include <linux/spinlock.h>
  26 #include <asm/unaligned.h>
  27 #include <asm/byteorder.h>
  28 #include <linux/input.h>
  29 #include <linux/wait.h>
  30 #include <linux/vmalloc.h>
  31 #include <linux/sched.h>
  32 #include <linux/semaphore.h>
  33
  34 #include <linux/hid.h>
  35 #include <linux/hiddev.h>
  36 #include <linux/hid-debug.h>
  37 #include <linux/hidraw.h>
  38
  39 #include "hid-ids.h"
  40
  41 /*
  42  * Version Information
  43  */
  44
  45 #define DRIVER_DESC "HID core driver"
  46 #define DRIVER_LICENSE "GPL"
  47
  48 int hid_debug = 0;
  49 module_param_named(debug, hid_debug, int, 0600);
  50 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
  51 EXPORT_SYMBOL_GPL(hid_debug);
  52
  53 static int hid_ignore_special_drivers = 0;
  54 module_param_named(ignore_special_drivers, hid_ignore_special_drivers, int, 0600);
  55 MODULE_PARM_DESC(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         int i;
  98
  99         if (report->maxfield == HID_MAX_FIELDS) {
 100                 hid_err(report->device, "too many fields in report\n");
 101                 return NULL;
 102         }
 103
 104         field = kzalloc((sizeof(struct hid_field) +
 105                          usages * sizeof(struct hid_usage) +
 106                          values * sizeof(unsigned)), GFP_KERNEL);
 107         if (!field)
 108                 return NULL;
 109
 110         field->index = report->maxfield++;
 111         report->field[field->index] = field;
 112         field->usage = (struct hid_usage *)(field + 1);
 113         field->value = (s32 *)(field->usage + usages);
 114         field->report = report;
 115
 116         for (i = 0; i < usages; i++)
 117                 field->usage[i].usage_index = i;
 118
 119         return field;
 120 }
 121
 122 /*
 123  * Open a collection. The type/usage is pushed on the stack.
 124  */
 125
 126 static int open_collection(struct hid_parser *parser, unsigned type)
 127 {
 128         struct hid_collection *collection;
 129         unsigned usage;
 130
 131         usage = parser->local.usage[0];
 132
 133         if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
 134                 hid_err(parser->device, "collection stack overflow\n");
 135                 return -EINVAL;
 136         }
 137
 138         if (parser->device->maxcollection == parser->device->collection_size) {
 139                 collection = kmalloc(sizeof(struct hid_collection) *
 140                                 parser->device->collection_size * 2, GFP_KERNEL);
 141                 if (collection == NULL) {
 142                         hid_err(parser->device, "failed to reallocate collection array\n");
 143                         return -ENOMEM;
 144                 }
 145                 memcpy(collection, parser->device->collection,
 146                         sizeof(struct hid_collection) *
 147                         parser->device->collection_size);
 148                 memset(collection + parser->device->collection_size, 0,
 149                         sizeof(struct hid_collection) *
 150                         parser->device->collection_size);
 151                 kfree(parser->device->collection);
 152                 parser->device->collection = collection;
 153                 parser->device->collection_size *= 2;
 154         }
 155
 156         parser->collection_stack[parser->collection_stack_ptr++] =
 157                 parser->device->maxcollection;
 158
 159         collection = parser->device->collection +
 160                 parser->device->maxcollection++;
 161         collection->type = type;
 162         collection->usage = usage;
 163         collection->level = parser->collection_stack_ptr - 1;
 164
 165         if (type == HID_COLLECTION_APPLICATION)
 166                 parser->device->maxapplication++;
 167
 168         return 0;
 169 }
 170
 171 /*
 172  * Close a collection.
 173  */
 174
 175 static int close_collection(struct hid_parser *parser)
 176 {
 177         if (!parser->collection_stack_ptr) {
 178                 hid_err(parser->device, "collection stack underflow\n");
 179                 return -EINVAL;
 180         }
 181         parser->collection_stack_ptr--;
 182         return 0;
 183 }
 184
 185 /*
 186  * Climb up the stack, search for the specified collection type
 187  * and return the usage.
 188  */
 189
 190 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
 191 {
 192         struct hid_collection *collection = parser->device->collection;
 193         int n;
 194
 195         for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
 196                 unsigned index = parser->collection_stack[n];
 197                 if (collection[index].type == type)
 198                         return collection[index].usage;
 199         }
 200         return 0; /* we know nothing about this usage type */
 201 }
 202
 203 /*
 204  * Add a usage to the temporary parser table.
 205  */
 206
 207 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
 208 {
 209         if (parser->local.usage_index >= HID_MAX_USAGES) {
 210                 hid_err(parser->device, "usage index exceeded\n");
 211                 return -1;
 212         }
 213         parser->local.usage[parser->local.usage_index] = usage;
 214         parser->local.collection_index[parser->local.usage_index] =
 215                 parser->collection_stack_ptr ?
 216                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
 217         parser->local.usage_index++;
 218         return 0;
 219 }
 220
 221 /*
 222  * Register a new field for this report.
 223  */
 224
 225 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
 226 {
 227         struct hid_report *report;
 228         struct hid_field *field;
 229         int usages;
 230         unsigned offset;
 231         int i;
 232
 233         report = hid_register_report(parser->device, report_type, parser->global.report_id);
 234         if (!report) {
 235                 hid_err(parser->device, "hid_register_report failed\n");
 236                 return -1;
 237         }
 238
 239         /* Handle both signed and unsigned cases properly */
 240         if ((parser->global.logical_minimum < 0 &&
 241                 parser->global.logical_maximum <
 242                 parser->global.logical_minimum) ||
 243                 (parser->global.logical_minimum >= 0 &&
 244                 (__u32)parser->global.logical_maximum <
 245                 (__u32)parser->global.logical_minimum)) {
 246                 dbg_hid("logical range invalid 0x%x 0x%x\n",
 247                         parser->global.logical_minimum,
 248                         parser->global.logical_maximum);
 249                 return -1;
 250         }
 251
 252         offset = report->size;
 253         report->size += parser->global.report_size * parser->global.report_count;
 254
 255         if (!parser->local.usage_index) /* Ignore padding fields */
 256                 return 0;
 257
 258         usages = max_t(int, parser->local.usage_index, parser->global.report_count);
 259
 260         field = hid_register_field(report, usages, parser->global.report_count);
 261         if (!field)
 262                 return 0;
 263
 264         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
 265         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
 266         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
 267
 268         for (i = 0; i < usages; i++) {
 269                 int j = i;
 270                 /* Duplicate the last usage we parsed if we have excess values */
 271                 if (i >= parser->local.usage_index)
 272                         j = parser->local.usage_index - 1;
 273                 field->usage[i].hid = parser->local.usage[j];
 274                 field->usage[i].collection_index =
 275                         parser->local.collection_index[j];
 276         }
 277
 278         field->maxusage = usages;
 279         field->flags = flags;
 280         field->report_offset = offset;
 281         field->report_type = report_type;
 282         field->report_size = parser->global.report_size;
 283         field->report_count = parser->global.report_count;
 284         field->logical_minimum = parser->global.logical_minimum;
 285         field->logical_maximum = parser->global.logical_maximum;
 286         field->physical_minimum = parser->global.physical_minimum;
 287         field->physical_maximum = parser->global.physical_maximum;
 288         field->unit_exponent = parser->global.unit_exponent;
 289         field->unit = parser->global.unit;
 290
 291         return 0;
 292 }
 293
 294 /*
 295  * Read data value from item.
 296  */
 297
 298 static u32 item_udata(struct hid_item *item)
 299 {
 300         switch (item->size) {
 301         case 1: return item->data.u8;
 302         case 2: return item->data.u16;
 303         case 4: return item->data.u32;
 304         }
 305         return 0;
 306 }
 307
 308 static s32 item_sdata(struct hid_item *item)
 309 {
 310         switch (item->size) {
 311         case 1: return item->data.s8;
 312         case 2: return item->data.s16;
 313         case 4: return item->data.s32;
 314         }
 315         return 0;
 316 }
 317
 318 /*
 319  * Process a global item.
 320  */
 321
 322 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
 323 {
 324         __u32 raw_value;
 325         switch (item->tag) {
 326         case HID_GLOBAL_ITEM_TAG_PUSH:
 327
 328                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
 329                         hid_err(parser->device, "global environment stack overflow\n");
 330                         return -1;
 331                 }
 332
 333                 memcpy(parser->global_stack + parser->global_stack_ptr++,
 334                         &parser->global, sizeof(struct hid_global));
 335                 return 0;
 336
 337         case HID_GLOBAL_ITEM_TAG_POP:
 338
 339                 if (!parser->global_stack_ptr) {
 340                         hid_err(parser->device, "global environment stack underflow\n");
 341                         return -1;
 342                 }
 343
 344                 memcpy(&parser->global, parser->global_stack +
 345                         --parser->global_stack_ptr, sizeof(struct hid_global));
 346                 return 0;
 347
 348         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
 349                 parser->global.usage_page = item_udata(item);
 350                 return 0;
 351
 352         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
 353                 parser->global.logical_minimum = item_sdata(item);
 354                 return 0;
 355
 356         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
 357                 if (parser->global.logical_minimum < 0)
 358                         parser->global.logical_maximum = item_sdata(item);
 359                 else
 360                         parser->global.logical_maximum = item_udata(item);
 361                 return 0;
 362
 363         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
 364                 parser->global.physical_minimum = item_sdata(item);
 365                 return 0;
 366
 367         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
 368                 if (parser->global.physical_minimum < 0)
 369                         parser->global.physical_maximum = item_sdata(item);
 370                 else
 371                         parser->global.physical_maximum = item_udata(item);
 372                 return 0;
 373
 374         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
 375                 /* Units exponent negative numbers are given through a
 376                  * two's complement.
 377                  * See "6.2.2.7 Global Items" for more information. */
 378                 raw_value = item_udata(item);
 379                 if (!(raw_value & 0xfffffff0))
 380                         parser->global.unit_exponent = hid_snto32(raw_value, 4);
 381                 else
 382                         parser->global.unit_exponent = raw_value;
 383                 return 0;
 384
 385         case HID_GLOBAL_ITEM_TAG_UNIT:
 386                 parser->global.unit = item_udata(item);
 387                 return 0;
 388
 389         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
 390                 parser->global.report_size = item_udata(item);
 391                 if (parser->global.report_size > 128) {
 392                         hid_err(parser->device, "invalid report_size %d\n",
 393                                         parser->global.report_size);
 394                         return -1;
 395                 }
 396                 return 0;
 397
 398         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
 399                 parser->global.report_count = item_udata(item);
 400                 if (parser->global.report_count > HID_MAX_USAGES) {
 401                         hid_err(parser->device, "invalid report_count %d\n",
 402                                         parser->global.report_count);
 403                         return -1;
 404                 }
 405                 return 0;
 406
 407         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
 408                 parser->global.report_id = item_udata(item);
 409                 if (parser->global.report_id == 0 ||
 410                     parser->global.report_id >= HID_MAX_IDS) {
 411                         hid_err(parser->device, "report_id %u is invalid\n",
 412                                 parser->global.report_id);
 413                         return -1;
 414                 }
 415                 return 0;
 416
 417         default:
 418                 hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
 419                 return -1;
 420         }
 421 }
 422
 423 /*
 424  * Process a local item.
 425  */
 426
 427 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 428 {
 429         __u32 data;
 430         unsigned n;
 431
 432         data = item_udata(item);
 433
 434         switch (item->tag) {
 435         case HID_LOCAL_ITEM_TAG_DELIMITER:
 436
 437                 if (data) {
 438                         /*
 439                          * We treat items before the first delimiter
 440                          * as global to all usage sets (branch 0).
 441                          * In the moment we process only these global
 442                          * items and the first delimiter set.
 443                          */
 444                         if (parser->local.delimiter_depth != 0) {
 445                                 hid_err(parser->device, "nested delimiters\n");
 446                                 return -1;
 447                         }
 448                         parser->local.delimiter_depth++;
 449                         parser->local.delimiter_branch++;
 450                 } else {
 451                         if (parser->local.delimiter_depth < 1) {
 452                                 hid_err(parser->device, "bogus close delimiter\n");
 453                                 return -1;
 454                         }
 455                         parser->local.delimiter_depth--;
 456                 }
 457                 return 0;
 458
 459         case HID_LOCAL_ITEM_TAG_USAGE:
 460
 461                 if (parser->local.delimiter_branch > 1) {
 462                         dbg_hid("alternative usage ignored\n");
 463                         return 0;
 464                 }
 465
 466                 if (item->size <= 2)
 467                         data = (parser->global.usage_page << 16) + data;
 468
 469                 return hid_add_usage(parser, data);
 470
 471         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 472
 473                 if (parser->local.delimiter_branch > 1) {
 474                         dbg_hid("alternative usage ignored\n");
 475                         return 0;
 476                 }
 477
 478                 if (item->size <= 2)
 479                         data = (parser->global.usage_page << 16) + data;
 480
 481                 parser->local.usage_minimum = data;
 482                 return 0;
 483
 484         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 485
 486                 if (parser->local.delimiter_branch > 1) {
 487                         dbg_hid("alternative usage ignored\n");
 488                         return 0;
 489                 }
 490
 491                 if (item->size <= 2)
 492                         data = (parser->global.usage_page << 16) + data;
 493
 494                 for (n = parser->local.usage_minimum; n <= data; n++)
 495                         if (hid_add_usage(parser, n)) {
 496                                 dbg_hid("hid_add_usage failed\n");
 497                                 return -1;
 498                         }
 499                 return 0;
 500
 501         default:
 502
 503                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
 504                 return 0;
 505         }
 506         return 0;
 507 }
 508
 509 /*
 510  * Process a main item.
 511  */
 512
 513 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
 514 {
 515         __u32 data;
 516         int ret;
 517
 518         data = item_udata(item);
 519
 520         switch (item->tag) {
 521         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 522                 ret = open_collection(parser, data & 0xff);
 523                 break;
 524         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 525                 ret = close_collection(parser);
 526                 break;
 527         case HID_MAIN_ITEM_TAG_INPUT:
 528                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
 529                 break;
 530         case HID_MAIN_ITEM_TAG_OUTPUT:
 531                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
 532                 break;
 533         case HID_MAIN_ITEM_TAG_FEATURE:
 534                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
 535                 break;
 536         default:
 537                 hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
 538                 ret = 0;
 539         }
 540
 541         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
 542
 543         return ret;
 544 }
 545
 546 /*
 547  * Process a reserved item.
 548  */
 549
 550 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
 551 {
 552         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
 553         return 0;
 554 }
 555
 556 /*
 557  * Free a report and all registered fields. The field->usage and
 558  * field->value table's are allocated behind the field, so we need
 559  * only to free(field) itself.
 560  */
 561
 562 static void hid_free_report(struct hid_report *report)
 563 {
 564         unsigned n;
 565
 566         for (n = 0; n < report->maxfield; n++)
 567                 kfree(report->field[n]);
 568         kfree(report);
 569 }
 570
 571 /*
 572  * Close report. This function returns the device
 573  * state to the point prior to hid_open_report().
 574  */
 575 static void hid_close_report(struct hid_device *device)
 576 {
 577         unsigned i, j;
 578
 579         for (i = 0; i < HID_REPORT_TYPES; i++) {
 580                 struct hid_report_enum *report_enum = device->report_enum + i;
 581
 582                 for (j = 0; j < HID_MAX_IDS; j++) {
 583                         struct hid_report *report = report_enum->report_id_hash[j];
 584                         if (report)
 585                                 hid_free_report(report);
 586                 }
 587                 memset(report_enum, 0, sizeof(*report_enum));
 588                 INIT_LIST_HEAD(&report_enum->report_list);
 589         }
 590
 591         kfree(device->rdesc);
 592         device->rdesc = NULL;
 593         device->rsize = 0;
 594
 595         kfree(device->collection);
 596         device->collection = NULL;
 597         device->collection_size = 0;
 598         device->maxcollection = 0;
 599         device->maxapplication = 0;
 600
 601         device->status &= ~HID_STAT_PARSED;
 602 }
 603
 604 /*
 605  * Free a device structure, all reports, and all fields.
 606  */
 607
 608 static void hid_device_release(struct device *dev)
 609 {
 610         struct hid_device *hid = container_of(dev, struct hid_device, dev);
 611
 612         hid_close_report(hid);
 613         kfree(hid->dev_rdesc);
 614         kfree(hid);
 615 }
 616
 617 /*
 618  * Fetch a report description item from the data stream. We support long
 619  * items, though they are not used yet.
 620  */
 621
 622 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
 623 {
 624         u8 b;
 625
 626         if ((end - start) <= 0)
 627                 return NULL;
 628
 629         b = *start++;
 630
 631         item->type = (b >> 2) & 3;
 632         item->tag  = (b >> 4) & 15;
 633
 634         if (item->tag == HID_ITEM_TAG_LONG) {
 635
 636                 item->format = HID_ITEM_FORMAT_LONG;
 637
 638                 if ((end - start) < 2)
 639                         return NULL;
 640
 641                 item->size = *start++;
 642                 item->tag  = *start++;
 643
 644                 if ((end - start) < item->size)
 645                         return NULL;
 646
 647                 item->data.longdata = start;
 648                 start += item->size;
 649                 return start;
 650         }
 651
 652         item->format = HID_ITEM_FORMAT_SHORT;
 653         item->size = b & 3;
 654
 655         switch (item->size) {
 656         case 0:
 657                 return start;
 658
 659         case 1:
 660                 if ((end - start) < 1)
 661                         return NULL;
 662                 item->data.u8 = *start++;
 663                 return start;
 664
 665         case 2:
 666                 if ((end - start) < 2)
 667                         return NULL;
 668                 item->data.u16 = get_unaligned_le16(start);
 669                 start = (__u8 *)((__le16 *)start + 1);
 670                 return start;
 671
 672         case 3:
 673                 item->size++;
 674                 if ((end - start) < 4)
 675                         return NULL;
 676                 item->data.u32 = get_unaligned_le32(start);
 677                 start = (__u8 *)((__le32 *)start + 1);
 678                 return start;
 679         }
 680
 681         return NULL;
 682 }
 683
 684 static void hid_scan_input_usage(struct hid_parser *parser, u32 usage)
 685 {
 686         struct hid_device *hid = parser->device;
 687
 688         if (usage == HID_DG_CONTACTID)
 689                 hid->group = HID_GROUP_MULTITOUCH;
 690 }
 691
 692 static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage)
 693 {
 694         if (usage == 0xff0000c5 && parser->global.report_count == 256 &&
 695             parser->global.report_size == 8)
 696                 parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;
 697 }
 698
 699 static void hid_scan_collection(struct hid_parser *parser, unsigned type)
 700 {
 701         struct hid_device *hid = parser->device;
 702
 703         if (((parser->global.usage_page << 16) == HID_UP_SENSOR) &&
 704             type == HID_COLLECTION_PHYSICAL)
 705                 hid->group = HID_GROUP_SENSOR_HUB;
 706 }
 707
 708 static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)
 709 {
 710         __u32 data;
 711         int i;
 712
 713         data = item_udata(item);
 714
 715         switch (item->tag) {
 716         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 717                 hid_scan_collection(parser, data & 0xff);
 718                 break;
 719         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 720                 break;
 721         case HID_MAIN_ITEM_TAG_INPUT:
 722                 for (i = 0; i < parser->local.usage_index; i++)
 723                         hid_scan_input_usage(parser, parser->local.usage[i]);
 724                 break;
 725         case HID_MAIN_ITEM_TAG_OUTPUT:
 726                 break;
 727         case HID_MAIN_ITEM_TAG_FEATURE:
 728                 for (i = 0; i < parser->local.usage_index; i++)
 729                         hid_scan_feature_usage(parser, parser->local.usage[i]);
 730                 break;
 731         }
 732
 733         /* Reset the local parser environment */
 734         memset(&parser->local, 0, sizeof(parser->local));
 735
 736         return 0;
 737 }
 738
 739 /*
 740  * Scan a report descriptor before the device is added to the bus.
 741  * Sets device groups and other properties that determine what driver
 742  * to load.
 743  */
 744 static int hid_scan_report(struct hid_device *hid)
 745 {
 746         struct hid_parser *parser;
 747         struct hid_item item;
 748         __u8 *start = hid->dev_rdesc;
 749         __u8 *end = start + hid->dev_rsize;
 750         static int (*dispatch_type[])(struct hid_parser *parser,
 751                                       struct hid_item *item) = {
 752                 hid_scan_main,
 753                 hid_parser_global,
 754                 hid_parser_local,
 755                 hid_parser_reserved
 756         };
 757
 758         parser = vzalloc(sizeof(struct hid_parser));
 759         if (!parser)
 760                 return -ENOMEM;
 761
 762         parser->device = hid;
 763         hid->group = HID_GROUP_GENERIC;
 764
 765         /*
 766          * The parsing is simpler than the one in hid_open_report() as we should
 767          * be robust against hid errors. Those errors will be raised by
 768          * hid_open_report() anyway.
 769          */
 770         while ((start = fetch_item(start, end, &item)) != NULL)
 771                 dispatch_type[item.type](parser, &item);
 772
 773         /*
 774          * Handle special flags set during scanning.
 775          */
 776         if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) &&
 777             (hid->group == HID_GROUP_MULTITOUCH))
 778                 hid->group = HID_GROUP_MULTITOUCH_WIN_8;
 779
 780         vfree(parser);
 781         return 0;
 782 }
 783
 784 /**
 785  * hid_parse_report - parse device report
 786  *
 787  * @device: hid device
 788  * @start: report start
 789  * @size: report size
 790  *
 791  * Allocate the device report as read by the bus driver. This function should
 792  * only be called from parse() in ll drivers.
 793  */
 794 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
 795 {
 796         hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
 797         if (!hid->dev_rdesc)
 798                 return -ENOMEM;
 799         hid->dev_rsize = size;
 800         return 0;
 801 }
 802 EXPORT_SYMBOL_GPL(hid_parse_report);
 803
 804 static const char * const hid_report_names[] = {
 805         "HID_INPUT_REPORT",
 806         "HID_OUTPUT_REPORT",
 807         "HID_FEATURE_REPORT",
 808 };
 809 /**
 810  * hid_validate_values - validate existing device report's value indexes
 811  *
 812  * @device: hid device
 813  * @type: which report type to examine
 814  * @id: which report ID to examine (0 for first)
 815  * @field_index: which report field to examine
 816  * @report_counts: expected number of values
 817  *
 818  * Validate the number of values in a given field of a given report, after
 819  * parsing.
 820  */
 821 struct hid_report *hid_validate_values(struct hid_device *hid,
 822                                        unsigned int type, unsigned int id,
 823                                        unsigned int field_index,
 824                                        unsigned int report_counts)
 825 {
 826         struct hid_report *report;
 827
 828         if (type > HID_FEATURE_REPORT) {
 829                 hid_err(hid, "invalid HID report type %u\n", type);
 830                 return NULL;
 831         }
 832
 833         if (id >= HID_MAX_IDS) {
 834                 hid_err(hid, "invalid HID report id %u\n", id);
 835                 return NULL;
 836         }
 837
 838         /*
 839          * Explicitly not using hid_get_report() here since it depends on
 840          * ->numbered being checked, which may not always be the case when
 841          * drivers go to access report values.
 842          */
 843         report = hid->report_enum[type].report_id_hash[id];
 844         if (!report) {
 845                 hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
 846                 return NULL;
 847         }
 848         if (report->maxfield <= field_index) {
 849                 hid_err(hid, "not enough fields in %s %u\n",
 850                         hid_report_names[type], id);
 851                 return NULL;
 852         }
 853         if (report->field[field_index]->report_count < report_counts) {
 854                 hid_err(hid, "not enough values in %s %u field %u\n",
 855                         hid_report_names[type], id, field_index);
 856                 return NULL;
 857         }
 858         return report;
 859 }
 860 EXPORT_SYMBOL_GPL(hid_validate_values);
 861
 862 /**
 863  * hid_open_report - open a driver-specific device report
 864  *
 865  * @device: hid device
 866  *
 867  * Parse a report description into a hid_device structure. Reports are
 868  * enumerated, fields are attached to these reports.
 869  * 0 returned on success, otherwise nonzero error value.
 870  *
 871  * This function (or the equivalent hid_parse() macro) should only be
 872  * called from probe() in drivers, before starting the device.
 873  */
 874 int hid_open_report(struct hid_device *device)
 875 {
 876         struct hid_parser *parser;
 877         struct hid_item item;
 878         unsigned int size;
 879         __u8 *start;
 880         __u8 *buf;
 881         __u8 *end;
 882         int ret;
 883         static int (*dispatch_type[])(struct hid_parser *parser,
 884                                       struct hid_item *item) = {
 885                 hid_parser_main,
 886                 hid_parser_global,
 887                 hid_parser_local,
 888                 hid_parser_reserved
 889         };
 890
 891         if (WARN_ON(device->status & HID_STAT_PARSED))
 892                 return -EBUSY;
 893
 894         start = device->dev_rdesc;
 895         if (WARN_ON(!start))
 896                 return -ENODEV;
 897         size = device->dev_rsize;
 898
 899         buf = kmemdup(start, size, GFP_KERNEL);
 900         if (buf == NULL)
 901                 return -ENOMEM;
 902
 903         if (device->driver->report_fixup)
 904                 start = device->driver->report_fixup(device, buf, &size);
 905         else
 906                 start = buf;
 907
 908         start = kmemdup(start, size, GFP_KERNEL);
 909         kfree(buf);
 910         if (start == NULL)
 911                 return -ENOMEM;
 912
 913         device->rdesc = start;
 914         device->rsize = size;
 915
 916         parser = vzalloc(sizeof(struct hid_parser));
 917         if (!parser) {
 918                 ret = -ENOMEM;
 919                 goto err;
 920         }
 921
 922         parser->device = device;
 923
 924         end = start + size;
 925
 926         device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
 927                                      sizeof(struct hid_collection), GFP_KERNEL);
 928         if (!device->collection) {
 929                 ret = -ENOMEM;
 930                 goto err;
 931         }
 932         device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
 933
 934         ret = -EINVAL;
 935         while ((start = fetch_item(start, end, &item)) != NULL) {
 936
 937                 if (item.format != HID_ITEM_FORMAT_SHORT) {
 938                         hid_err(device, "unexpected long global item\n");
 939                         goto err;
 940                 }
 941
 942                 if (dispatch_type[item.type](parser, &item)) {
 943                         hid_err(device, "item %u %u %u %u parsing failed\n",
 944                                 item.format, (unsigned)item.size,
 945                                 (unsigned)item.type, (unsigned)item.tag);
 946                         goto err;
 947                 }
 948
 949                 if (start == end) {
 950                         if (parser->collection_stack_ptr) {
 951                                 hid_err(device, "unbalanced collection at end of report description\n");
 952                                 goto err;
 953                         }
 954                         if (parser->local.delimiter_depth) {
 955                                 hid_err(device, "unbalanced delimiter at end of report description\n");
 956                                 goto err;
 957                         }
 958                         vfree(parser);
 959                         device->status |= HID_STAT_PARSED;
 960                         return 0;
 961                 }
 962         }
 963
 964         hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
 965 err:
 966         vfree(parser);
 967         hid_close_report(device);
 968         return ret;
 969 }
 970 EXPORT_SYMBOL_GPL(hid_open_report);
 971
 972 /*
 973  * Convert a signed n-bit integer to signed 32-bit integer. Common
 974  * cases are done through the compiler, the screwed things has to be
 975  * done by hand.
 976  */
 977
 978 static s32 snto32(__u32 value, unsigned n)
 979 {
 980         switch (n) {
 981         case 8:  return ((__s8)value);
 982         case 16: return ((__s16)value);
 983         case 32: return ((__s32)value);
 984         }
 985         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
 986 }
 987
 988 s32 hid_snto32(__u32 value, unsigned n)
 989 {
 990         return snto32(value, n);
 991 }
 992 EXPORT_SYMBOL_GPL(hid_snto32);
 993
 994 /*
 995  * Convert a signed 32-bit integer to a signed n-bit integer.
 996  */
 997
 998 static u32 s32ton(__s32 value, unsigned n)
 999 {
1000         s32 a = value >> (n - 1);
1001         if (a && a != -1)
1002                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
1003         return value & ((1 << n) - 1);
1004 }
1005
1006 /*
1007  * Extract/implement a data field from/to a little endian report (bit array).
1008  *
1009  * Code sort-of follows HID spec:
1010  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
1011  *
1012  * While the USB HID spec allows unlimited length bit fields in "report
1013  * descriptors", most devices never use more than 16 bits.
1014  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
1015  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
1016  */
1017
1018 static __u32 extract(const struct hid_device *hid, __u8 *report,
1019                      unsigned offset, unsigned n)
1020 {
1021         u64 x;
1022
1023         if (n > 32)
1024                 hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
1025                          n, current->comm);
1026
1027         report += offset >> 3;  /* adjust byte index */
1028         offset &= 7;            /* now only need bit offset into one byte */
1029         x = get_unaligned_le64(report);
1030         x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
1031         return (u32) x;
1032 }
1033
1034 /*
1035  * "implement" : set bits in a little endian bit stream.
1036  * Same concepts as "extract" (see comments above).
1037  * The data mangled in the bit stream remains in little endian
1038  * order the whole time. It make more sense to talk about
1039  * endianness of register values by considering a register
1040  * a "cached" copy of the little endiad bit stream.
1041  */
1042 static void implement(const struct hid_device *hid, __u8 *report,
1043                       unsigned offset, unsigned n, __u32 value)
1044 {
1045         u64 x;
1046         u64 m = (1ULL << n) - 1;
1047
1048         if (n > 32)
1049                 hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
1050                          __func__, n, current->comm);
1051
1052         if (value > m)
1053                 hid_warn(hid, "%s() called with too large value %d! (%s)\n",
1054                          __func__, value, current->comm);
1055         WARN_ON(value > m);
1056         value &= m;
1057
1058         report += offset >> 3;
1059         offset &= 7;
1060
1061         x = get_unaligned_le64(report);
1062         x &= ~(m << offset);
1063         x |= ((u64)value) << offset;
1064         put_unaligned_le64(x, report);
1065 }
1066
1067 /*
1068  * Search an array for a value.
1069  */
1070
1071 static int search(__s32 *array, __s32 value, unsigned n)
1072 {
1073         while (n--) {
1074                 if (*array++ == value)
1075                         return 0;
1076         }
1077         return -1;
1078 }
1079
1080 /**
1081  * hid_match_report - check if driver's raw_event should be called
1082  *
1083  * @hid: hid device
1084  * @report_type: type to match against
1085  *
1086  * compare hid->driver->report_table->report_type to report->type
1087  */
1088 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
1089 {
1090         const struct hid_report_id *id = hid->driver->report_table;
1091
1092         if (!id) /* NULL means all */
1093                 return 1;
1094
1095         for (; id->report_type != HID_TERMINATOR; id++)
1096                 if (id->report_type == HID_ANY_ID ||
1097                                 id->report_type == report->type)
1098                         return 1;
1099         return 0;
1100 }
1101
1102 /**
1103  * hid_match_usage - check if driver's event should be called
1104  *
1105  * @hid: hid device
1106  * @usage: usage to match against
1107  *
1108  * compare hid->driver->usage_table->usage_{type,code} to
1109  * usage->usage_{type,code}
1110  */
1111 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1112 {
1113         const struct hid_usage_id *id = hid->driver->usage_table;
1114
1115         if (!id) /* NULL means all */
1116                 return 1;
1117
1118         for (; id->usage_type != HID_ANY_ID - 1; id++)
1119                 if ((id->usage_hid == HID_ANY_ID ||
1120                                 id->usage_hid == usage->hid) &&
1121                                 (id->usage_type == HID_ANY_ID ||
1122                                 id->usage_type == usage->type) &&
1123                                 (id->usage_code == HID_ANY_ID ||
1124                                  id->usage_code == usage->code))
1125                         return 1;
1126         return 0;
1127 }
1128
1129 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1130                 struct hid_usage *usage, __s32 value, int interrupt)
1131 {
1132         struct hid_driver *hdrv = hid->driver;
1133         int ret;
1134
1135         if (!list_empty(&hid->debug_list))
1136                 hid_dump_input(hid, usage, value);
1137
1138         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1139                 ret = hdrv->event(hid, field, usage, value);
1140                 if (ret != 0) {
1141                         if (ret < 0)
1142                                 hid_err(hid, "%s's event failed with %d\n",
1143                                                 hdrv->name, ret);
1144                         return;
1145                 }
1146         }
1147
1148         if (hid->claimed & HID_CLAIMED_INPUT)
1149                 hidinput_hid_event(hid, field, usage, value);
1150         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1151                 hid->hiddev_hid_event(hid, field, usage, value);
1152 }
1153
1154 /*
1155  * Analyse a received field, and fetch the data from it. The field
1156  * content is stored for next report processing (we do differential
1157  * reporting to the layer).
1158  */
1159
1160 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1161                             __u8 *data, int interrupt)
1162 {
1163         unsigned n;
1164         unsigned count = field->report_count;
1165         unsigned offset = field->report_offset;
1166         unsigned size = field->report_size;
1167         __s32 min = field->logical_minimum;
1168         __s32 max = field->logical_maximum;
1169         __s32 *value;
1170
1171         value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1172         if (!value)
1173                 return;
1174
1175         for (n = 0; n < count; n++) {
1176
1177                 value[n] = min < 0 ?
1178                         snto32(extract(hid, data, offset + n * size, size),
1179                                size) :
1180                         extract(hid, data, offset + n * size, size);
1181
1182                 /* Ignore report if ErrorRollOver */
1183                 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1184                     value[n] >= min && value[n] <= max &&
1185                     field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1186                         goto exit;
1187         }
1188
1189         for (n = 0; n < count; n++) {
1190
1191                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1192                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1193                         continue;
1194                 }
1195
1196                 if (field->value[n] >= min && field->value[n] <= max
1197                         && field->usage[field->value[n] - min].hid
1198                         && search(value, field->value[n], count))
1199                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1200
1201                 if (value[n] >= min && value[n] <= max
1202                         && field->usage[value[n] - min].hid
1203                         && search(field->value, value[n], count))
1204                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1205         }
1206
1207         memcpy(field->value, value, count * sizeof(__s32));
1208 exit:
1209         kfree(value);
1210 }
1211
1212 /*
1213  * Output the field into the report.
1214  */
1215
1216 static void hid_output_field(const struct hid_device *hid,
1217                              struct hid_field *field, __u8 *data)
1218 {
1219         unsigned count = field->report_count;
1220         unsigned offset = field->report_offset;
1221         unsigned size = field->report_size;
1222         unsigned n;
1223
1224         for (n = 0; n < count; n++) {
1225                 if (field->logical_minimum < 0) /* signed values */
1226                         implement(hid, data, offset + n * size, size,
1227                                   s32ton(field->value[n], size));
1228                 else                            /* unsigned values */
1229                         implement(hid, data, offset + n * size, size,
1230                                   field->value[n]);
1231         }
1232 }
1233
1234 /*
1235  * Create a report. 'data' has to be allocated using
1236  * hid_alloc_report_buf() so that it has proper size.
1237  */
1238
1239 void hid_output_report(struct hid_report *report, __u8 *data)
1240 {
1241         unsigned n;
1242
1243         if (report->id > 0)
1244                 *data++ = report->id;
1245
1246         memset(data, 0, ((report->size - 1) >> 3) + 1);
1247         for (n = 0; n < report->maxfield; n++)
1248                 hid_output_field(report->device, report->field[n], data);
1249 }
1250 EXPORT_SYMBOL_GPL(hid_output_report);
1251
1252 /*
1253  * Allocator for buffer that is going to be passed to hid_output_report()
1254  */
1255 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
1256 {
1257         /*
1258          * 7 extra bytes are necessary to achieve proper functionality
1259          * of implement() working on 8 byte chunks
1260          */
1261
1262         int len = ((report->size - 1) >> 3) + 1 + (report->id > 0) + 7;
1263
1264         return kmalloc(len, flags);
1265 }
1266 EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
1267
1268 /*
1269  * Set a field value. The report this field belongs to has to be
1270  * created and transferred to the device, to set this value in the
1271  * device.
1272  */
1273
1274 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1275 {
1276         unsigned size;
1277
1278         if (!field)
1279                 return -1;
1280
1281         size = field->report_size;
1282
1283         hid_dump_input(field->report->device, field->usage + offset, value);
1284
1285         if (offset >= field->report_count) {
1286                 hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1287                                 offset, field->report_count);
1288                 return -1;
1289         }
1290         if (field->logical_minimum < 0) {
1291                 if (value != snto32(s32ton(value, size), size)) {
1292                         hid_err(field->report->device, "value %d is out of range\n", value);
1293                         return -1;
1294                 }
1295         }
1296         field->value[offset] = value;
1297         return 0;
1298 }
1299 EXPORT_SYMBOL_GPL(hid_set_field);
1300
1301 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1302                 const u8 *data)
1303 {
1304         struct hid_report *report;
1305         unsigned int n = 0;     /* Normally report number is 0 */
1306
1307         /* Device uses numbered reports, data[0] is report number */
1308         if (report_enum->numbered)
1309                 n = *data;
1310
1311         report = report_enum->report_id_hash[n];
1312         if (report == NULL)
1313                 dbg_hid("undefined report_id %u received\n", n);
1314
1315         return report;
1316 }
1317
1318 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1319                 int interrupt)
1320 {
1321         struct hid_report_enum *report_enum = hid->report_enum + type;
1322         struct hid_report *report;
1323         struct hid_driver *hdrv;
1324         unsigned int a;
1325         int rsize, csize = size;
1326         u8 *cdata = data;
1327         int ret = 0;
1328
1329         report = hid_get_report(report_enum, data);
1330         if (!report)
1331                 goto out;
1332
1333         if (report_enum->numbered) {
1334                 cdata++;
1335                 csize--;
1336         }
1337
1338         rsize = ((report->size - 1) >> 3) + 1;
1339
1340         if (rsize > HID_MAX_BUFFER_SIZE)
1341                 rsize = HID_MAX_BUFFER_SIZE;
1342
1343         if (csize < rsize) {
1344                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1345                                 csize, rsize);
1346                 memset(cdata + csize, 0, rsize - csize);
1347         }
1348
1349         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1350                 hid->hiddev_report_event(hid, report);
1351         if (hid->claimed & HID_CLAIMED_HIDRAW) {
1352                 ret = hidraw_report_event(hid, data, size);
1353                 if (ret)
1354                         goto out;
1355         }
1356
1357         if (hid->claimed != HID_CLAIMED_HIDRAW) {
1358                 for (a = 0; a < report->maxfield; a++)
1359                         hid_input_field(hid, report->field[a], cdata, interrupt);
1360                 hdrv = hid->driver;
1361                 if (hdrv && hdrv->report)
1362                         hdrv->report(hid, report);
1363         }
1364
1365         if (hid->claimed & HID_CLAIMED_INPUT)
1366                 hidinput_report_event(hid, report);
1367 out:
1368         return ret;
1369 }
1370 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1371
1372 /**
1373  * hid_input_report - report data from lower layer (usb, bt...)
1374  *
1375  * @hid: hid device
1376  * @type: HID report type (HID_*_REPORT)
1377  * @data: report contents
1378  * @size: size of data parameter
1379  * @interrupt: distinguish between interrupt and control transfers
1380  *
1381  * This is data entry for lower layers.
1382  */
1383 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1384 {
1385         struct hid_report_enum *report_enum;
1386         struct hid_driver *hdrv;
1387         struct hid_report *report;
1388         int ret = 0;
1389
1390         if (!hid)
1391                 return -ENODEV;
1392
1393         if (down_trylock(&hid->driver_input_lock))
1394                 return -EBUSY;
1395
1396         if (!hid->driver) {
1397                 ret = -ENODEV;
1398                 goto unlock;
1399         }
1400         report_enum = hid->report_enum + type;
1401         hdrv = hid->driver;
1402
1403         if (!size) {
1404                 dbg_hid("empty report\n");
1405                 ret = -1;
1406                 goto unlock;
1407         }
1408
1409         /* Avoid unnecessary overhead if debugfs is disabled */
1410         if (!list_empty(&hid->debug_list))
1411                 hid_dump_report(hid, type, data, size);
1412
1413         report = hid_get_report(report_enum, data);
1414
1415         if (!report) {
1416                 ret = -1;
1417                 goto unlock;
1418         }
1419
1420         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1421                 ret = hdrv->raw_event(hid, report, data, size);
1422                 if (ret < 0) {
1423                         ret = ret < 0 ? ret : 0;
1424                         goto unlock;
1425                 }
1426         }
1427
1428         ret = hid_report_raw_event(hid, type, data, size, interrupt);
1429
1430 unlock:
1431         up(&hid->driver_input_lock);
1432         return ret;
1433 }
1434 EXPORT_SYMBOL_GPL(hid_input_report);
1435
1436 static bool hid_match_one_id(struct hid_device *hdev,
1437                 const struct hid_device_id *id)
1438 {
1439         return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1440                 (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1441                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1442                 (id->product == HID_ANY_ID || id->product == hdev->product);
1443 }
1444
1445 const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1446                 const struct hid_device_id *id)
1447 {
1448         for (; id->bus; id++)
1449                 if (hid_match_one_id(hdev, id))
1450                         return id;
1451
1452         return NULL;
1453 }
1454
1455 static const struct hid_device_id hid_hiddev_list[] = {
1456         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1457         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1458         { }
1459 };
1460
1461 static bool hid_hiddev(struct hid_device *hdev)
1462 {
1463         return !!hid_match_id(hdev, hid_hiddev_list);
1464 }
1465
1466
1467 static ssize_t
1468 read_report_descriptor(struct file *filp, struct kobject *kobj,
1469                 struct bin_attribute *attr,
1470                 char *buf, loff_t off, size_t count)
1471 {
1472         struct device *dev = container_of(kobj, struct device, kobj);
1473         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1474
1475         if (off >= hdev->rsize)
1476                 return 0;
1477
1478         if (off + count > hdev->rsize)
1479                 count = hdev->rsize - off;
1480
1481         memcpy(buf, hdev->rdesc + off, count);
1482
1483         return count;
1484 }
1485
1486 static struct bin_attribute dev_bin_attr_report_desc = {
1487         .attr = { .name = "report_descriptor", .mode = 0444 },
1488         .read = read_report_descriptor,
1489         .size = HID_MAX_DESCRIPTOR_SIZE,
1490 };
1491
1492 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1493 {
1494         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1495                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1496                 "Multi-Axis Controller"
1497         };
1498         const char *type, *bus;
1499         char buf[64];
1500         unsigned int i;
1501         int len;
1502         int ret;
1503
1504         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1505                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1506         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1507                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1508         if (hdev->bus != BUS_USB)
1509                 connect_mask &= ~HID_CONNECT_HIDDEV;
1510         if (hid_hiddev(hdev))
1511                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1512
1513         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1514                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1515                 hdev->claimed |= HID_CLAIMED_INPUT;
1516
1517         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1518                         !hdev->hiddev_connect(hdev,
1519                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1520                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1521         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1522                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1523
1524         /* Drivers with the ->raw_event callback set are not required to connect
1525          * to any other listener. */
1526         if (!hdev->claimed && !hdev->driver->raw_event) {
1527                 hid_err(hdev, "device has no listeners, quitting\n");
1528                 return -ENODEV;
1529         }
1530
1531         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1532                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1533                 hdev->ff_init(hdev);
1534
1535         len = 0;
1536         if (hdev->claimed & HID_CLAIMED_INPUT)
1537                 len += sprintf(buf + len, "input");
1538         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1539                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1540                                 hdev->minor);
1541         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1542                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1543                                 ((struct hidraw *)hdev->hidraw)->minor);
1544
1545         type = "Device";
1546         for (i = 0; i < hdev->maxcollection; i++) {
1547                 struct hid_collection *col = &hdev->collection[i];
1548                 if (col->type == HID_COLLECTION_APPLICATION &&
1549                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1550                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1551                         type = types[col->usage & 0xffff];
1552                         break;
1553                 }
1554         }
1555
1556         switch (hdev->bus) {
1557         case BUS_USB:
1558                 bus = "USB";
1559                 break;
1560         case BUS_BLUETOOTH:
1561                 bus = "BLUETOOTH";
1562                 break;
1563         default:
1564                 bus = "<UNKNOWN>";
1565         }
1566
1567         ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1568         if (ret)
1569                 hid_warn(hdev,
1570                          "can't create sysfs report descriptor attribute err: %d\n", ret);
1571
1572         hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1573                  buf, bus, hdev->version >> 8, hdev->version & 0xff,
1574                  type, hdev->name, hdev->phys);
1575
1576         return 0;
1577 }
1578 EXPORT_SYMBOL_GPL(hid_connect);
1579
1580 void hid_disconnect(struct hid_device *hdev)
1581 {
1582         device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1583         if (hdev->claimed & HID_CLAIMED_INPUT)
1584                 hidinput_disconnect(hdev);
1585         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1586                 hdev->hiddev_disconnect(hdev);
1587         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1588                 hidraw_disconnect(hdev);
1589 }
1590 EXPORT_SYMBOL_GPL(hid_disconnect);
1591
1592 /*
1593  * A list of devices for which there is a specialized driver on HID bus.
1594  *
1595  * Please note that for multitouch devices (driven by hid-multitouch driver),
1596  * there is a proper autodetection and autoloading in place (based on presence
1597  * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1598  * as we are doing the right thing in hid_scan_usage().
1599  *
1600  * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1601  * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1602  * used as a driver. See hid_scan_report().
1603  */
1604 static const struct hid_device_id hid_have_special_driver[] = {
1605         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1606         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1607         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1608         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1609         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1610         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1611         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1612         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1613         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1614         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1615         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1616         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1617         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1618         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1619         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1620         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1621         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1622         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1623         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1624         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1625         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1626         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1627         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1628         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1629         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1630         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1631         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1632         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1633         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1634         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1635         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1636         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1637         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1638         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1639         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1640         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1641         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1642         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1643         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1644         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1645         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1646         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1647         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1648         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1649         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1650         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1651         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1652         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1653         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1654         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1655         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1656         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1657         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1658         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1659         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1660         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1661         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1662         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1663         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1664         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1665         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1666         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1667         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1668         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1669         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1670         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1671         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1672         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1673         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1674         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1675         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1676         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1677         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1678         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1679         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1680         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1681         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1682         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1683         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1684         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1685         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1686         { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1687         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1688         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1689         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1690         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1691         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1692         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1693         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1694         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1695         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1696         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1697         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1698         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1699         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1700         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1701         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1702         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1703         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1704         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1705         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
1706         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
1707         { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1708         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1709         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1710         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1711         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1712         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1713         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1714         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1715         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1716         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1717         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1718         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
1719         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
1720         { HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_580) },
1721         { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1722         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1723         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1724         { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1725         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
1726         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
1727         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1728         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1729         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1730         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1731         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1732         { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1733 #if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
1734         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1735 #endif
1736         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1737         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1738         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1739         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1740         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1741         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1742         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1743         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1744         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1745         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1746         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1747         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1748         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1749         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1750         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1751         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1752         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1753         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1754         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1755         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1756         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1757         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1758         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1759         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1760         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1761 #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1762         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1763         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1764 #endif
1765         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1766         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1767         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1768         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1769         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1770         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1771         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1772         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1773         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1774         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1775         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1776         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1777         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1778         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1779         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1780         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1781         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1782         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1783         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1784         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1785         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1786         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1787         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1788         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1789         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1790         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1791         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1792         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1793         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1794         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1795         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1796         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1797         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1798         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1799         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1800         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1801         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1802         { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1803 #if IS_ENABLED(CONFIG_HID_ROCCAT)
1804         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1805         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1806         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1807         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1808         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
1809         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
1810         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1811         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
1812         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1813         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1814         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1815 #endif
1816         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1817         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1818         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1819         { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1820         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
1821         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
1822         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1823         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1824         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1825         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1826         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1827         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
1828         { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
1829         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1830         { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
1831         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1832         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1833         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1834         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1835         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1836         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1837         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1838         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1839         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1840         { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1841         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1842         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1843         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1844         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1845         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1846         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1847         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1848         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1849         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1850         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1851         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1852         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1853         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1854         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1855         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1856         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1857         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1858         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
1859         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1860         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1861         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1862         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1863         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1864         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1865         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1866         { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1867         { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
1868         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1869         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1870         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1871
1872         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1873         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1874         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1875         { }
1876 };
1877
1878 struct hid_dynid {
1879         struct list_head list;
1880         struct hid_device_id id;
1881 };
1882
1883 /**
1884  * store_new_id - add a new HID device ID to this driver and re-probe devices
1885  * @driver: target device driver
1886  * @buf: buffer for scanning device ID data
1887  * @count: input size
1888  *
1889  * Adds a new dynamic hid device ID to this driver,
1890  * and causes the driver to probe for all devices again.
1891  */
1892 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1893                 size_t count)
1894 {
1895         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1896         struct hid_dynid *dynid;
1897         __u32 bus, vendor, product;
1898         unsigned long driver_data = 0;
1899         int ret;
1900
1901         ret = sscanf(buf, "%x %x %x %lx",
1902                         &bus, &vendor, &product, &driver_data);
1903         if (ret < 3)
1904                 return -EINVAL;
1905
1906         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1907         if (!dynid)
1908                 return -ENOMEM;
1909
1910         dynid->id.bus = bus;
1911         dynid->id.group = HID_GROUP_ANY;
1912         dynid->id.vendor = vendor;
1913         dynid->id.product = product;
1914         dynid->id.driver_data = driver_data;
1915
1916         spin_lock(&hdrv->dyn_lock);
1917         list_add_tail(&dynid->list, &hdrv->dyn_list);
1918         spin_unlock(&hdrv->dyn_lock);
1919
1920         ret = driver_attach(&hdrv->driver);
1921
1922         return ret ? : count;
1923 }
1924 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1925
1926 static void hid_free_dynids(struct hid_driver *hdrv)
1927 {
1928         struct hid_dynid *dynid, *n;
1929
1930         spin_lock(&hdrv->dyn_lock);
1931         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1932                 list_del(&dynid->list);
1933                 kfree(dynid);
1934         }
1935         spin_unlock(&hdrv->dyn_lock);
1936 }
1937
1938 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1939                 struct hid_driver *hdrv)
1940 {
1941         struct hid_dynid *dynid;
1942
1943         spin_lock(&hdrv->dyn_lock);
1944         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1945                 if (hid_match_one_id(hdev, &dynid->id)) {
1946                         spin_unlock(&hdrv->dyn_lock);
1947                         return &dynid->id;
1948                 }
1949         }
1950         spin_unlock(&hdrv->dyn_lock);
1951
1952         return hid_match_id(hdev, hdrv->id_table);
1953 }
1954
1955 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1956 {
1957         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1958         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1959
1960         return hid_match_device(hdev, hdrv) != NULL;
1961 }
1962
1963 static int hid_device_probe(struct device *dev)
1964 {
1965         struct hid_driver *hdrv = container_of(dev->driver,
1966                         struct hid_driver, driver);
1967         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1968         const struct hid_device_id *id;
1969         int ret = 0;
1970
1971         if (down_interruptible(&hdev->driver_lock))
1972                 return -EINTR;
1973         if (down_interruptible(&hdev->driver_input_lock)) {
1974                 ret = -EINTR;
1975                 goto unlock_driver_lock;
1976         }
1977         hdev->io_started = false;
1978
1979         if (!hdev->driver) {
1980                 id = hid_match_device(hdev, hdrv);
1981                 if (id == NULL) {
1982                         ret = -ENODEV;
1983                         goto unlock;
1984                 }
1985
1986                 hdev->driver = hdrv;
1987                 if (hdrv->probe) {
1988                         ret = hdrv->probe(hdev, id);
1989                 } else { /* default probe */
1990                         ret = hid_open_report(hdev);
1991                         if (!ret)
1992                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1993                 }
1994                 if (ret) {
1995                         hid_close_report(hdev);
1996                         hdev->driver = NULL;
1997                 }
1998         }
1999 unlock:
2000         if (!hdev->io_started)
2001                 up(&hdev->driver_input_lock);
2002 unlock_driver_lock:
2003         up(&hdev->driver_lock);
2004         return ret;
2005 }
2006
2007 static int hid_device_remove(struct device *dev)
2008 {
2009         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2010         struct hid_driver *hdrv;
2011         int ret = 0;
2012
2013         if (down_interruptible(&hdev->driver_lock))
2014                 return -EINTR;
2015         if (down_interruptible(&hdev->driver_input_lock)) {
2016                 ret = -EINTR;
2017                 goto unlock_driver_lock;
2018         }
2019         hdev->io_started = false;
2020
2021         hdrv = hdev->driver;
2022         if (hdrv) {
2023                 if (hdrv->remove)
2024                         hdrv->remove(hdev);
2025                 else /* default remove */
2026                         hid_hw_stop(hdev);
2027                 hid_close_report(hdev);
2028                 hdev->driver = NULL;
2029         }
2030
2031         if (!hdev->io_started)
2032                 up(&hdev->driver_input_lock);
2033 unlock_driver_lock:
2034         up(&hdev->driver_lock);
2035         return ret;
2036 }
2037
2038 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
2039                              char *buf)
2040 {
2041         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2042         int len;
2043
2044         len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
2045                        hdev->bus, hdev->group, hdev->vendor, hdev->product);
2046
2047         return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
2048 }
2049 static DEVICE_ATTR_RO(modalias);
2050
2051 static struct attribute *hid_dev_attrs[] = {
2052         &dev_attr_modalias.attr,
2053         NULL,
2054 };
2055 ATTRIBUTE_GROUPS(hid_dev);
2056
2057 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
2058 {
2059         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2060
2061         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
2062                         hdev->bus, hdev->vendor, hdev->product))
2063                 return -ENOMEM;
2064
2065         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
2066                 return -ENOMEM;
2067
2068         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
2069                 return -ENOMEM;
2070
2071         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
2072                 return -ENOMEM;
2073
2074         if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
2075                            hdev->bus, hdev->group, hdev->vendor, hdev->product))
2076                 return -ENOMEM;
2077
2078         return 0;
2079 }
2080
2081 static struct bus_type hid_bus_type = {
2082         .name           = "hid",
2083         .dev_groups     = hid_dev_groups,
2084         .match          = hid_bus_match,
2085         .probe          = hid_device_probe,
2086         .remove         = hid_device_remove,
2087         .uevent         = hid_uevent,
2088 };
2089
2090 /* a list of devices that shouldn't be handled by HID core at all */
2091 static const struct hid_device_id hid_ignore_list[] = {
2092         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
2093         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
2094         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
2095         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
2096         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
2097         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
2098         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
2099         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
2100         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
2101         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
2102         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
2103         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
2104         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
2105         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
2106         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
2107         { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
2108         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
2109         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
2110         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
2111         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
2112         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
2113         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
2114         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
2115         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
2116         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
2117         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
2118         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
2119         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
2120         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
2121         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
2122         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
2123         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
2124         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
2125         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
2126         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
2127         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
2128         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
2129         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
2130         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
2131         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
2132         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
2133         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2134         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2135         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2136         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2137         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2138         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2139         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2140         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2141         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2142         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2143         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2144         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2145         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2146         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2147         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2148         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2149         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2150         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2151         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2152         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2153         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2154         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2155         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2156         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2157         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2158         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2159         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2160         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2161         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2162         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2163         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2164         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2165         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2166         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2167         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2168         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2169         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2170         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2171         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2172         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2173         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2174         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2175         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2176         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2177         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2178         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2179         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2180         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2181         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2182         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2183         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2184         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2185         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2186         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2187         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
2188         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
2189         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2190         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2191         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2192         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2193         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2194         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2195         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2196         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2197         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2198         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2199         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2200         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2201         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2202         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2203         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2204         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2205         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2206         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2207         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2208         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2209         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2210         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2211         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2212         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2213         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2214         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2215         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2216         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2217         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2218         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2219         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2220         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2221         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2222         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2223         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2224         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2225         { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2226         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2227         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2228         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2229         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2230         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2231         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2232         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2233         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2234         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2235         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2236         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2237         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2238         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2239         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2240         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2241         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2242         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2243         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2244         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2245         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2246         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2247 #if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2248         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2249         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2250         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2251         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2252         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2253         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2254         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2255         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2256 #endif
2257         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2258         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2259         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2260         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2261         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2262         { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
2263         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2264         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2265         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2266         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2267         { }
2268 };
2269
2270 /**
2271  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2272  *
2273  * There are composite devices for which we want to ignore only a certain
2274  * interface. This is a list of devices for which only the mouse interface will
2275  * be ignored. This allows a dedicated driver to take care of the interface.
2276  */
2277 static const struct hid_device_id hid_mouse_ignore_list[] = {
2278         /* appletouch driver */
2279         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2280         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2281         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2282         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2283         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2284         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2285         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2286         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2287         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2288         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2289         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2290         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2291         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2292         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2293         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2294         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2295         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2296         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2297         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2298         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2299         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2300         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2301         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2302         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2303         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2304         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2305         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2306         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2307         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2308         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2309         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2310         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2311         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2312         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2313         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2314         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2315         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2316         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2317         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2318         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2319         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2320         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2321         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2322         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2323         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2324         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2325         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2326         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2327         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2328         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2329         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2330         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2331         { }
2332 };
2333
2334 bool hid_ignore(struct hid_device *hdev)
2335 {
2336         if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2337                 return false;
2338         if (hdev->quirks & HID_QUIRK_IGNORE)
2339                 return true;
2340
2341         switch (hdev->vendor) {
2342         case USB_VENDOR_ID_CODEMERCS:
2343                 /* ignore all Code Mercenaries IOWarrior devices */
2344                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2345                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2346                         return true;
2347                 break;
2348         case USB_VENDOR_ID_LOGITECH:
2349                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2350                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2351                         return true;
2352                 /*
2353                  * The Keene FM transmitter USB device has the same USB ID as
2354                  * the Logitech AudioHub Speaker, but it should ignore the hid.
2355                  * Check if the name is that of the Keene device.
2356                  * For reference: the name of the AudioHub is
2357                  * "HOLTEK  AudioHub Speaker".
2358                  */
2359                 if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2360                         !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2361                                 return true;
2362                 break;
2363         case USB_VENDOR_ID_SOUNDGRAPH:
2364                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2365                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2366                         return true;
2367                 break;
2368         case USB_VENDOR_ID_HANWANG:
2369                 if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2370                     hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2371                         return true;
2372                 break;
2373         case USB_VENDOR_ID_JESS:
2374                 if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2375                                 hdev->type == HID_TYPE_USBNONE)
2376                         return true;
2377                 break;
2378         case USB_VENDOR_ID_DWAV:
2379                 /* These are handled by usbtouchscreen. hdev->type is probably
2380                  * HID_TYPE_USBNONE, but we say !HID_TYPE_USBMOUSE to match
2381                  * usbtouchscreen. */
2382                 if ((hdev->product == USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER ||
2383                      hdev->product == USB_DEVICE_ID_DWAV_TOUCHCONTROLLER) &&
2384                     hdev->type != HID_TYPE_USBMOUSE)
2385                         return true;
2386                 break;
2387         case USB_VENDOR_ID_VELLEMAN:
2388                 /* These are not HID devices.  They are handled by comedi. */
2389                 if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2390                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2391                     (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2392                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2393                         return true;
2394                 break;
2395         case USB_VENDOR_ID_ATMEL_V_USB:
2396                 /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2397                  * it has the same USB ID as many Atmel V-USB devices. This
2398                  * usb radio is handled by radio-ma901.c driver so we want
2399                  * ignore the hid. Check the name, bus, product and ignore
2400                  * if we have MA901 usb radio.
2401                  */
2402                 if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2403                         hdev->bus == BUS_USB &&
2404                         strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2405                         return true;
2406                 break;
2407         }
2408
2409         if (hdev->type == HID_TYPE_USBMOUSE &&
2410                         hid_match_id(hdev, hid_mouse_ignore_list))
2411                 return true;
2412
2413         return !!hid_match_id(hdev, hid_ignore_list);
2414 }
2415 EXPORT_SYMBOL_GPL(hid_ignore);
2416
2417 int hid_add_device(struct hid_device *hdev)
2418 {
2419         static atomic_t id = ATOMIC_INIT(0);
2420         int ret;
2421
2422         if (WARN_ON(hdev->status & HID_STAT_ADDED))
2423                 return -EBUSY;
2424
2425         /* we need to kill them here, otherwise they will stay allocated to
2426          * wait for coming driver */
2427         if (hid_ignore(hdev))
2428                 return -ENODEV;
2429
2430         /*
2431          * Read the device report descriptor once and use as template
2432          * for the driver-specific modifications.
2433          */
2434         ret = hdev->ll_driver->parse(hdev);
2435         if (ret)
2436                 return ret;
2437         if (!hdev->dev_rdesc)
2438                 return -ENODEV;
2439
2440         /*
2441          * Scan generic devices for group information
2442          */
2443         if (hid_ignore_special_drivers ||
2444             !hid_match_id(hdev, hid_have_special_driver)) {
2445                 ret = hid_scan_report(hdev);
2446                 if (ret)
2447                         hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2448         }
2449
2450         /* XXX hack, any other cleaner solution after the driver core
2451          * is converted to allow more than 20 bytes as the device name? */
2452         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2453                      hdev->vendor, hdev->product, atomic_inc_return(&id));
2454
2455         hid_debug_register(hdev, dev_name(&hdev->dev));
2456         ret = device_add(&hdev->dev);
2457         if (!ret)
2458                 hdev->status |= HID_STAT_ADDED;
2459         else
2460                 hid_debug_unregister(hdev);
2461
2462         return ret;
2463 }
2464 EXPORT_SYMBOL_GPL(hid_add_device);
2465
2466 /**
2467  * hid_allocate_device - allocate new hid device descriptor
2468  *
2469  * Allocate and initialize hid device, so that hid_destroy_device might be
2470  * used to free it.
2471  *
2472  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2473  * error value.
2474  */
2475 struct hid_device *hid_allocate_device(void)
2476 {
2477         struct hid_device *hdev;
2478         int ret = -ENOMEM;
2479
2480         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2481         if (hdev == NULL)
2482                 return ERR_PTR(ret);
2483
2484         device_initialize(&hdev->dev);
2485         hdev->dev.release = hid_device_release;
2486         hdev->dev.bus = &hid_bus_type;
2487
2488         hid_close_report(hdev);
2489
2490         init_waitqueue_head(&hdev->debug_wait);
2491         INIT_LIST_HEAD(&hdev->debug_list);
2492         spin_lock_init(&hdev->debug_list_lock);
2493         sema_init(&hdev->driver_lock, 1);
2494         sema_init(&hdev->driver_input_lock, 1);
2495
2496         return hdev;
2497 }
2498 EXPORT_SYMBOL_GPL(hid_allocate_device);
2499
2500 static void hid_remove_device(struct hid_device *hdev)
2501 {
2502         if (hdev->status & HID_STAT_ADDED) {
2503                 device_del(&hdev->dev);
2504                 hid_debug_unregister(hdev);
2505                 hdev->status &= ~HID_STAT_ADDED;
2506         }
2507         kfree(hdev->dev_rdesc);
2508         hdev->dev_rdesc = NULL;
2509         hdev->dev_rsize = 0;
2510 }
2511
2512 /**
2513  * hid_destroy_device - free previously allocated device
2514  *
2515  * @hdev: hid device
2516  *
2517  * If you allocate hid_device through hid_allocate_device, you should ever
2518  * free by this function.
2519  */
2520 void hid_destroy_device(struct hid_device *hdev)
2521 {
2522         hid_remove_device(hdev);
2523         put_device(&hdev->dev);
2524 }
2525 EXPORT_SYMBOL_GPL(hid_destroy_device);
2526
2527 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2528                 const char *mod_name)
2529 {
2530         int ret;
2531
2532         hdrv->driver.name = hdrv->name;
2533         hdrv->driver.bus = &hid_bus_type;
2534         hdrv->driver.owner = owner;
2535         hdrv->driver.mod_name = mod_name;
2536
2537         INIT_LIST_HEAD(&hdrv->dyn_list);
2538         spin_lock_init(&hdrv->dyn_lock);
2539
2540         ret = driver_register(&hdrv->driver);
2541         if (ret)
2542                 return ret;
2543
2544         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2545         if (ret)
2546                 driver_unregister(&hdrv->driver);
2547
2548         return ret;
2549 }
2550 EXPORT_SYMBOL_GPL(__hid_register_driver);
2551
2552 void hid_unregister_driver(struct hid_driver *hdrv)
2553 {
2554         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2555         driver_unregister(&hdrv->driver);
2556         hid_free_dynids(hdrv);
2557 }
2558 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2559
2560 int hid_check_keys_pressed(struct hid_device *hid)
2561 {
2562         struct hid_input *hidinput;
2563         int i;
2564
2565         if (!(hid->claimed & HID_CLAIMED_INPUT))
2566                 return 0;
2567
2568         list_for_each_entry(hidinput, &hid->inputs, list) {
2569                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2570                         if (hidinput->input->key[i])
2571                                 return 1;
2572         }
2573
2574         return 0;
2575 }
2576
2577 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2578
2579 static int __init hid_init(void)
2580 {
2581         int ret;
2582
2583         if (hid_debug)
2584                 pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2585                         "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2586
2587         ret = bus_register(&hid_bus_type);
2588         if (ret) {
2589                 pr_err("can't register hid bus\n");
2590                 goto err;
2591         }
2592
2593         ret = hidraw_init();
2594         if (ret)
2595                 goto err_bus;
2596
2597         hid_debug_init();
2598
2599         return 0;
2600 err_bus:
2601         bus_unregister(&hid_bus_type);
2602 err:
2603         return ret;
2604 }
2605
2606 static void __exit hid_exit(void)
2607 {
2608         hid_debug_exit();
2609         hidraw_exit();
2610         bus_unregister(&hid_bus_type);
2611 }
2612
2613 module_init(hid_init);
2614 module_exit(hid_exit);
2615
2616 MODULE_AUTHOR("Andreas Gal");
2617 MODULE_AUTHOR("Vojtech Pavlik");
2618 MODULE_AUTHOR("Jiri Kosina");
2619 MODULE_LICENSE(DRIVER_LICENSE);
2620