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
  98         if (report->maxfield == HID_MAX_FIELDS) {
  99                 hid_err(report->device, "too many fields in report\n");
 100                 return NULL;
 101         }
 102
 103         field = kzalloc((sizeof(struct hid_field) +
 104                          usages * sizeof(struct hid_usage) +
 105                          values * sizeof(unsigned)), GFP_KERNEL);
 106         if (!field)
 107                 return NULL;
 108
 109         field->index = report->maxfield++;
 110         report->field[field->index] = field;
 111         field->usage = (struct hid_usage *)(field + 1);
 112         field->value = (s32 *)(field->usage + usages);
 113         field->report = report;
 114
 115         return field;
 116 }
 117
 118 /*
 119  * Open a collection. The type/usage is pushed on the stack.
 120  */
 121
 122 static int open_collection(struct hid_parser *parser, unsigned type)
 123 {
 124         struct hid_collection *collection;
 125         unsigned usage;
 126
 127         usage = parser->local.usage[0];
 128
 129         if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
 130                 hid_err(parser->device, "collection stack overflow\n");
 131                 return -EINVAL;
 132         }
 133
 134         if (parser->device->maxcollection == parser->device->collection_size) {
 135                 collection = kmalloc(sizeof(struct hid_collection) *
 136                                 parser->device->collection_size * 2, GFP_KERNEL);
 137                 if (collection == NULL) {
 138                         hid_err(parser->device, "failed to reallocate collection array\n");
 139                         return -ENOMEM;
 140                 }
 141                 memcpy(collection, parser->device->collection,
 142                         sizeof(struct hid_collection) *
 143                         parser->device->collection_size);
 144                 memset(collection + parser->device->collection_size, 0,
 145                         sizeof(struct hid_collection) *
 146                         parser->device->collection_size);
 147                 kfree(parser->device->collection);
 148                 parser->device->collection = collection;
 149                 parser->device->collection_size *= 2;
 150         }
 151
 152         parser->collection_stack[parser->collection_stack_ptr++] =
 153                 parser->device->maxcollection;
 154
 155         collection = parser->device->collection +
 156                 parser->device->maxcollection++;
 157         collection->type = type;
 158         collection->usage = usage;
 159         collection->level = parser->collection_stack_ptr - 1;
 160
 161         if (type == HID_COLLECTION_APPLICATION)
 162                 parser->device->maxapplication++;
 163
 164         return 0;
 165 }
 166
 167 /*
 168  * Close a collection.
 169  */
 170
 171 static int close_collection(struct hid_parser *parser)
 172 {
 173         if (!parser->collection_stack_ptr) {
 174                 hid_err(parser->device, "collection stack underflow\n");
 175                 return -EINVAL;
 176         }
 177         parser->collection_stack_ptr--;
 178         return 0;
 179 }
 180
 181 /*
 182  * Climb up the stack, search for the specified collection type
 183  * and return the usage.
 184  */
 185
 186 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
 187 {
 188         struct hid_collection *collection = parser->device->collection;
 189         int n;
 190
 191         for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
 192                 unsigned index = parser->collection_stack[n];
 193                 if (collection[index].type == type)
 194                         return collection[index].usage;
 195         }
 196         return 0; /* we know nothing about this usage type */
 197 }
 198
 199 /*
 200  * Add a usage to the temporary parser table.
 201  */
 202
 203 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
 204 {
 205         if (parser->local.usage_index >= HID_MAX_USAGES) {
 206                 hid_err(parser->device, "usage index exceeded\n");
 207                 return -1;
 208         }
 209         parser->local.usage[parser->local.usage_index] = usage;
 210         parser->local.collection_index[parser->local.usage_index] =
 211                 parser->collection_stack_ptr ?
 212                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
 213         parser->local.usage_index++;
 214         return 0;
 215 }
 216
 217 /*
 218  * Register a new field for this report.
 219  */
 220
 221 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
 222 {
 223         struct hid_report *report;
 224         struct hid_field *field;
 225         unsigned usages;
 226         unsigned offset;
 227         unsigned i;
 228
 229         report = hid_register_report(parser->device, report_type, parser->global.report_id);
 230         if (!report) {
 231                 hid_err(parser->device, "hid_register_report failed\n");
 232                 return -1;
 233         }
 234
 235         /* Handle both signed and unsigned cases properly */
 236         if ((parser->global.logical_minimum < 0 &&
 237                 parser->global.logical_maximum <
 238                 parser->global.logical_minimum) ||
 239                 (parser->global.logical_minimum >= 0 &&
 240                 (__u32)parser->global.logical_maximum <
 241                 (__u32)parser->global.logical_minimum)) {
 242                 dbg_hid("logical range invalid 0x%x 0x%x\n",
 243                         parser->global.logical_minimum,
 244                         parser->global.logical_maximum);
 245                 return -1;
 246         }
 247
 248         offset = report->size;
 249         report->size += parser->global.report_size * parser->global.report_count;
 250
 251         if (!parser->local.usage_index) /* Ignore padding fields */
 252                 return 0;
 253
 254         usages = max_t(unsigned, parser->local.usage_index,
 255                                  parser->global.report_count);
 256
 257         field = hid_register_field(report, usages, parser->global.report_count);
 258         if (!field)
 259                 return 0;
 260
 261         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
 262         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
 263         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
 264
 265         for (i = 0; i < usages; i++) {
 266                 unsigned j = i;
 267                 /* Duplicate the last usage we parsed if we have excess values */
 268                 if (i >= parser->local.usage_index)
 269                         j = parser->local.usage_index - 1;
 270                 field->usage[i].hid = parser->local.usage[j];
 271                 field->usage[i].collection_index =
 272                         parser->local.collection_index[j];
 273                 field->usage[i].usage_index = i;
 274         }
 275
 276         field->maxusage = usages;
 277         field->flags = flags;
 278         field->report_offset = offset;
 279         field->report_type = report_type;
 280         field->report_size = parser->global.report_size;
 281         field->report_count = parser->global.report_count;
 282         field->logical_minimum = parser->global.logical_minimum;
 283         field->logical_maximum = parser->global.logical_maximum;
 284         field->physical_minimum = parser->global.physical_minimum;
 285         field->physical_maximum = parser->global.physical_maximum;
 286         field->unit_exponent = parser->global.unit_exponent;
 287         field->unit = parser->global.unit;
 288
 289         return 0;
 290 }
 291
 292 /*
 293  * Read data value from item.
 294  */
 295
 296 static u32 item_udata(struct hid_item *item)
 297 {
 298         switch (item->size) {
 299         case 1: return item->data.u8;
 300         case 2: return item->data.u16;
 301         case 4: return item->data.u32;
 302         }
 303         return 0;
 304 }
 305
 306 static s32 item_sdata(struct hid_item *item)
 307 {
 308         switch (item->size) {
 309         case 1: return item->data.s8;
 310         case 2: return item->data.s16;
 311         case 4: return item->data.s32;
 312         }
 313         return 0;
 314 }
 315
 316 /*
 317  * Process a global item.
 318  */
 319
 320 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
 321 {
 322         __u32 raw_value;
 323         switch (item->tag) {
 324         case HID_GLOBAL_ITEM_TAG_PUSH:
 325
 326                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
 327                         hid_err(parser->device, "global environment stack overflow\n");
 328                         return -1;
 329                 }
 330
 331                 memcpy(parser->global_stack + parser->global_stack_ptr++,
 332                         &parser->global, sizeof(struct hid_global));
 333                 return 0;
 334
 335         case HID_GLOBAL_ITEM_TAG_POP:
 336
 337                 if (!parser->global_stack_ptr) {
 338                         hid_err(parser->device, "global environment stack underflow\n");
 339                         return -1;
 340                 }
 341
 342                 memcpy(&parser->global, parser->global_stack +
 343                         --parser->global_stack_ptr, sizeof(struct hid_global));
 344                 return 0;
 345
 346         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
 347                 parser->global.usage_page = item_udata(item);
 348                 return 0;
 349
 350         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
 351                 parser->global.logical_minimum = item_sdata(item);
 352                 return 0;
 353
 354         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
 355                 if (parser->global.logical_minimum < 0)
 356                         parser->global.logical_maximum = item_sdata(item);
 357                 else
 358                         parser->global.logical_maximum = item_udata(item);
 359                 return 0;
 360
 361         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
 362                 parser->global.physical_minimum = item_sdata(item);
 363                 return 0;
 364
 365         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
 366                 if (parser->global.physical_minimum < 0)
 367                         parser->global.physical_maximum = item_sdata(item);
 368                 else
 369                         parser->global.physical_maximum = item_udata(item);
 370                 return 0;
 371
 372         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
 373                 /* Units exponent negative numbers are given through a
 374                  * two's complement.
 375                  * See "6.2.2.7 Global Items" for more information. */
 376                 raw_value = item_udata(item);
 377                 if (!(raw_value & 0xfffffff0))
 378                         parser->global.unit_exponent = hid_snto32(raw_value, 4);
 379                 else
 380                         parser->global.unit_exponent = raw_value;
 381                 return 0;
 382
 383         case HID_GLOBAL_ITEM_TAG_UNIT:
 384                 parser->global.unit = item_udata(item);
 385                 return 0;
 386
 387         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
 388                 parser->global.report_size = item_udata(item);
 389                 if (parser->global.report_size > 128) {
 390                         hid_err(parser->device, "invalid report_size %d\n",
 391                                         parser->global.report_size);
 392                         return -1;
 393                 }
 394                 return 0;
 395
 396         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
 397                 parser->global.report_count = item_udata(item);
 398                 if (parser->global.report_count > HID_MAX_USAGES) {
 399                         hid_err(parser->device, "invalid report_count %d\n",
 400                                         parser->global.report_count);
 401                         return -1;
 402                 }
 403                 return 0;
 404
 405         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
 406                 parser->global.report_id = item_udata(item);
 407                 if (parser->global.report_id == 0 ||
 408                     parser->global.report_id >= HID_MAX_IDS) {
 409                         hid_err(parser->device, "report_id %u is invalid\n",
 410                                 parser->global.report_id);
 411                         return -1;
 412                 }
 413                 return 0;
 414
 415         default:
 416                 hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
 417                 return -1;
 418         }
 419 }
 420
 421 /*
 422  * Process a local item.
 423  */
 424
 425 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 426 {
 427         __u32 data;
 428         unsigned n;
 429
 430         data = item_udata(item);
 431
 432         switch (item->tag) {
 433         case HID_LOCAL_ITEM_TAG_DELIMITER:
 434
 435                 if (data) {
 436                         /*
 437                          * We treat items before the first delimiter
 438                          * as global to all usage sets (branch 0).
 439                          * In the moment we process only these global
 440                          * items and the first delimiter set.
 441                          */
 442                         if (parser->local.delimiter_depth != 0) {
 443                                 hid_err(parser->device, "nested delimiters\n");
 444                                 return -1;
 445                         }
 446                         parser->local.delimiter_depth++;
 447                         parser->local.delimiter_branch++;
 448                 } else {
 449                         if (parser->local.delimiter_depth < 1) {
 450                                 hid_err(parser->device, "bogus close delimiter\n");
 451                                 return -1;
 452                         }
 453                         parser->local.delimiter_depth--;
 454                 }
 455                 return 1;
 456
 457         case HID_LOCAL_ITEM_TAG_USAGE:
 458
 459                 if (parser->local.delimiter_branch > 1) {
 460                         dbg_hid("alternative usage ignored\n");
 461                         return 0;
 462                 }
 463
 464                 if (item->size <= 2)
 465                         data = (parser->global.usage_page << 16) + data;
 466
 467                 return hid_add_usage(parser, data);
 468
 469         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 470
 471                 if (parser->local.delimiter_branch > 1) {
 472                         dbg_hid("alternative usage ignored\n");
 473                         return 0;
 474                 }
 475
 476                 if (item->size <= 2)
 477                         data = (parser->global.usage_page << 16) + data;
 478
 479                 parser->local.usage_minimum = data;
 480                 return 0;
 481
 482         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 483
 484                 if (parser->local.delimiter_branch > 1) {
 485                         dbg_hid("alternative usage ignored\n");
 486                         return 0;
 487                 }
 488
 489                 if (item->size <= 2)
 490                         data = (parser->global.usage_page << 16) + data;
 491
 492                 for (n = parser->local.usage_minimum; n <= data; n++)
 493                         if (hid_add_usage(parser, n)) {
 494                                 dbg_hid("hid_add_usage failed\n");
 495                                 return -1;
 496                         }
 497                 return 0;
 498
 499         default:
 500
 501                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
 502                 return 0;
 503         }
 504         return 0;
 505 }
 506
 507 /*
 508  * Process a main item.
 509  */
 510
 511 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
 512 {
 513         __u32 data;
 514         int ret;
 515
 516         data = item_udata(item);
 517
 518         switch (item->tag) {
 519         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 520                 ret = open_collection(parser, data & 0xff);
 521                 break;
 522         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 523                 ret = close_collection(parser);
 524                 break;
 525         case HID_MAIN_ITEM_TAG_INPUT:
 526                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
 527                 break;
 528         case HID_MAIN_ITEM_TAG_OUTPUT:
 529                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
 530                 break;
 531         case HID_MAIN_ITEM_TAG_FEATURE:
 532                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
 533                 break;
 534         default:
 535                 hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
 536                 ret = 0;
 537         }
 538
 539         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
 540
 541         return ret;
 542 }
 543
 544 /*
 545  * Process a reserved item.
 546  */
 547
 548 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
 549 {
 550         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
 551         return 0;
 552 }
 553
 554 /*
 555  * Free a report and all registered fields. The field->usage and
 556  * field->value table's are allocated behind the field, so we need
 557  * only to free(field) itself.
 558  */
 559
 560 static void hid_free_report(struct hid_report *report)
 561 {
 562         unsigned n;
 563
 564         for (n = 0; n < report->maxfield; n++)
 565                 kfree(report->field[n]);
 566         kfree(report);
 567 }
 568
 569 /*
 570  * Close report. This function returns the device
 571  * state to the point prior to hid_open_report().
 572  */
 573 static void hid_close_report(struct hid_device *device)
 574 {
 575         unsigned i, j;
 576
 577         for (i = 0; i < HID_REPORT_TYPES; i++) {
 578                 struct hid_report_enum *report_enum = device->report_enum + i;
 579
 580                 for (j = 0; j < HID_MAX_IDS; j++) {
 581                         struct hid_report *report = report_enum->report_id_hash[j];
 582                         if (report)
 583                                 hid_free_report(report);
 584                 }
 585                 memset(report_enum, 0, sizeof(*report_enum));
 586                 INIT_LIST_HEAD(&report_enum->report_list);
 587         }
 588
 589         kfree(device->rdesc);
 590         device->rdesc = NULL;
 591         device->rsize = 0;
 592
 593         kfree(device->collection);
 594         device->collection = NULL;
 595         device->collection_size = 0;
 596         device->maxcollection = 0;
 597         device->maxapplication = 0;
 598
 599         device->status &= ~HID_STAT_PARSED;
 600 }
 601
 602 /*
 603  * Free a device structure, all reports, and all fields.
 604  */
 605
 606 static void hid_device_release(struct device *dev)
 607 {
 608         struct hid_device *hid = container_of(dev, struct hid_device, dev);
 609
 610         hid_close_report(hid);
 611         kfree(hid->dev_rdesc);
 612         kfree(hid);
 613 }
 614
 615 /*
 616  * Fetch a report description item from the data stream. We support long
 617  * items, though they are not used yet.
 618  */
 619
 620 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
 621 {
 622         u8 b;
 623
 624         if ((end - start) <= 0)
 625                 return NULL;
 626
 627         b = *start++;
 628
 629         item->type = (b >> 2) & 3;
 630         item->tag  = (b >> 4) & 15;
 631
 632         if (item->tag == HID_ITEM_TAG_LONG) {
 633
 634                 item->format = HID_ITEM_FORMAT_LONG;
 635
 636                 if ((end - start) < 2)
 637                         return NULL;
 638
 639                 item->size = *start++;
 640                 item->tag  = *start++;
 641
 642                 if ((end - start) < item->size)
 643                         return NULL;
 644
 645                 item->data.longdata = start;
 646                 start += item->size;
 647                 return start;
 648         }
 649
 650         item->format = HID_ITEM_FORMAT_SHORT;
 651         item->size = b & 3;
 652
 653         switch (item->size) {
 654         case 0:
 655                 return start;
 656
 657         case 1:
 658                 if ((end - start) < 1)
 659                         return NULL;
 660                 item->data.u8 = *start++;
 661                 return start;
 662
 663         case 2:
 664                 if ((end - start) < 2)
 665                         return NULL;
 666                 item->data.u16 = get_unaligned_le16(start);
 667                 start = (__u8 *)((__le16 *)start + 1);
 668                 return start;
 669
 670         case 3:
 671                 item->size++;
 672                 if ((end - start) < 4)
 673                         return NULL;
 674                 item->data.u32 = get_unaligned_le32(start);
 675                 start = (__u8 *)((__le32 *)start + 1);
 676                 return start;
 677         }
 678
 679         return NULL;
 680 }
 681
 682 static void hid_scan_usage(struct hid_device *hid, u32 usage)
 683 {
 684         if (usage == HID_DG_CONTACTID)
 685                 hid->group = HID_GROUP_MULTITOUCH;
 686 }
 687
 688 /*
 689  * Scan a report descriptor before the device is added to the bus.
 690  * Sets device groups and other properties that determine what driver
 691  * to load.
 692  */
 693 static int hid_scan_report(struct hid_device *hid)
 694 {
 695         unsigned int page = 0, delim = 0;
 696         __u8 *start = hid->dev_rdesc;
 697         __u8 *end = start + hid->dev_rsize;
 698         unsigned int u, u_min = 0, u_max = 0;
 699         struct hid_item item;
 700
 701         hid->group = HID_GROUP_GENERIC;
 702         while ((start = fetch_item(start, end, &item)) != NULL) {
 703                 if (item.format != HID_ITEM_FORMAT_SHORT)
 704                         return -EINVAL;
 705                 if (item.type == HID_ITEM_TYPE_GLOBAL) {
 706                         if (item.tag == HID_GLOBAL_ITEM_TAG_USAGE_PAGE)
 707                                 page = item_udata(&item) << 16;
 708                 } else if (item.type == HID_ITEM_TYPE_LOCAL) {
 709                         if (delim > 1)
 710                                 break;
 711                         u = item_udata(&item);
 712                         if (item.size <= 2)
 713                                 u += page;
 714                         switch (item.tag) {
 715                         case HID_LOCAL_ITEM_TAG_DELIMITER:
 716                                 delim += !!u;
 717                                 break;
 718                         case HID_LOCAL_ITEM_TAG_USAGE:
 719                                 hid_scan_usage(hid, u);
 720                                 break;
 721                         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 722                                 u_min = u;
 723                                 break;
 724                         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 725                                 u_max = u;
 726                                 for (u = u_min; u <= u_max; u++)
 727                                         hid_scan_usage(hid, u);
 728                                 break;
 729                         }
 730                 } else if (page == HID_UP_SENSOR &&
 731                         item.type == HID_ITEM_TYPE_MAIN &&
 732                         item.tag == HID_MAIN_ITEM_TAG_BEGIN_COLLECTION &&
 733                         (item_udata(&item) & 0xff) == HID_COLLECTION_PHYSICAL)
 734                         hid->group = HID_GROUP_SENSOR_HUB;
 735         }
 736
 737         return 0;
 738 }
 739
 740 /**
 741  * hid_parse_report - parse device report
 742  *
 743  * @device: hid device
 744  * @start: report start
 745  * @size: report size
 746  *
 747  * Allocate the device report as read by the bus driver. This function should
 748  * only be called from parse() in ll drivers.
 749  */
 750 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
 751 {
 752         hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
 753         if (!hid->dev_rdesc)
 754                 return -ENOMEM;
 755         hid->dev_rsize = size;
 756         return 0;
 757 }
 758 EXPORT_SYMBOL_GPL(hid_parse_report);
 759
 760 static const char * const hid_report_names[] = {
 761         "HID_INPUT_REPORT",
 762         "HID_OUTPUT_REPORT",
 763         "HID_FEATURE_REPORT",
 764 };
 765 /**
 766  * hid_validate_values - validate existing device report's value indexes
 767  *
 768  * @device: hid device
 769  * @type: which report type to examine
 770  * @id: which report ID to examine (0 for first)
 771  * @field_index: which report field to examine
 772  * @report_counts: expected number of values
 773  *
 774  * Validate the number of values in a given field of a given report, after
 775  * parsing.
 776  */
 777 struct hid_report *hid_validate_values(struct hid_device *hid,
 778                                        unsigned int type, unsigned int id,
 779                                        unsigned int field_index,
 780                                        unsigned int report_counts)
 781 {
 782         struct hid_report *report;
 783
 784         if (type > HID_FEATURE_REPORT) {
 785                 hid_err(hid, "invalid HID report type %u\n", type);
 786                 return NULL;
 787         }
 788
 789         if (id >= HID_MAX_IDS) {
 790                 hid_err(hid, "invalid HID report id %u\n", id);
 791                 return NULL;
 792         }
 793
 794         /*
 795          * Explicitly not using hid_get_report() here since it depends on
 796          * ->numbered being checked, which may not always be the case when
 797          * drivers go to access report values.
 798          */
 799         if (id == 0) {
 800                 /*
 801                  * Validating on id 0 means we should examine the first
 802                  * report in the list.
 803                  */
 804                 report = list_entry(
 805                                 hid->report_enum[type].report_list.next,
 806                                 struct hid_report, list);
 807         } else {
 808                 report = hid->report_enum[type].report_id_hash[id];
 809         }
 810         if (!report) {
 811                 hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
 812                 return NULL;
 813         }
 814         if (report->maxfield <= field_index) {
 815                 hid_err(hid, "not enough fields in %s %u\n",
 816                         hid_report_names[type], id);
 817                 return NULL;
 818         }
 819         if (report->field[field_index]->report_count < report_counts) {
 820                 hid_err(hid, "not enough values in %s %u field %u\n",
 821                         hid_report_names[type], id, field_index);
 822                 return NULL;
 823         }
 824         return report;
 825 }
 826 EXPORT_SYMBOL_GPL(hid_validate_values);
 827
 828 /**
 829  * hid_open_report - open a driver-specific device report
 830  *
 831  * @device: hid device
 832  *
 833  * Parse a report description into a hid_device structure. Reports are
 834  * enumerated, fields are attached to these reports.
 835  * 0 returned on success, otherwise nonzero error value.
 836  *
 837  * This function (or the equivalent hid_parse() macro) should only be
 838  * called from probe() in drivers, before starting the device.
 839  */
 840 int hid_open_report(struct hid_device *device)
 841 {
 842         struct hid_parser *parser;
 843         struct hid_item item;
 844         unsigned int size;
 845         __u8 *start;
 846         __u8 *buf;
 847         __u8 *end;
 848         int ret;
 849         static int (*dispatch_type[])(struct hid_parser *parser,
 850                                       struct hid_item *item) = {
 851                 hid_parser_main,
 852                 hid_parser_global,
 853                 hid_parser_local,
 854                 hid_parser_reserved
 855         };
 856
 857         if (WARN_ON(device->status & HID_STAT_PARSED))
 858                 return -EBUSY;
 859
 860         start = device->dev_rdesc;
 861         if (WARN_ON(!start))
 862                 return -ENODEV;
 863         size = device->dev_rsize;
 864
 865         buf = kmemdup(start, size, GFP_KERNEL);
 866         if (buf == NULL)
 867                 return -ENOMEM;
 868
 869         if (device->driver->report_fixup)
 870                 start = device->driver->report_fixup(device, buf, &size);
 871         else
 872                 start = buf;
 873
 874         start = kmemdup(start, size, GFP_KERNEL);
 875         kfree(buf);
 876         if (start == NULL)
 877                 return -ENOMEM;
 878
 879         device->rdesc = start;
 880         device->rsize = size;
 881
 882         parser = vzalloc(sizeof(struct hid_parser));
 883         if (!parser) {
 884                 ret = -ENOMEM;
 885                 goto err;
 886         }
 887
 888         parser->device = device;
 889
 890         end = start + size;
 891
 892         device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
 893                                      sizeof(struct hid_collection), GFP_KERNEL);
 894         if (!device->collection) {
 895                 ret = -ENOMEM;
 896                 goto err;
 897         }
 898         device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
 899
 900         ret = -EINVAL;
 901         while ((start = fetch_item(start, end, &item)) != NULL) {
 902
 903                 if (item.format != HID_ITEM_FORMAT_SHORT) {
 904                         hid_err(device, "unexpected long global item\n");
 905                         goto err;
 906                 }
 907
 908                 if (dispatch_type[item.type](parser, &item)) {
 909                         hid_err(device, "item %u %u %u %u parsing failed\n",
 910                                 item.format, (unsigned)item.size,
 911                                 (unsigned)item.type, (unsigned)item.tag);
 912                         goto err;
 913                 }
 914
 915                 if (start == end) {
 916                         if (parser->collection_stack_ptr) {
 917                                 hid_err(device, "unbalanced collection at end of report description\n");
 918                                 goto err;
 919                         }
 920                         if (parser->local.delimiter_depth) {
 921                                 hid_err(device, "unbalanced delimiter at end of report description\n");
 922                                 goto err;
 923                         }
 924                         vfree(parser);
 925                         device->status |= HID_STAT_PARSED;
 926                         return 0;
 927                 }
 928         }
 929
 930         hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
 931 err:
 932         vfree(parser);
 933         hid_close_report(device);
 934         return ret;
 935 }
 936 EXPORT_SYMBOL_GPL(hid_open_report);
 937
 938 /*
 939  * Convert a signed n-bit integer to signed 32-bit integer. Common
 940  * cases are done through the compiler, the screwed things has to be
 941  * done by hand.
 942  */
 943
 944 static s32 snto32(__u32 value, unsigned n)
 945 {
 946         switch (n) {
 947         case 8:  return ((__s8)value);
 948         case 16: return ((__s16)value);
 949         case 32: return ((__s32)value);
 950         }
 951         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
 952 }
 953
 954 s32 hid_snto32(__u32 value, unsigned n)
 955 {
 956         return snto32(value, n);
 957 }
 958 EXPORT_SYMBOL_GPL(hid_snto32);
 959
 960 /*
 961  * Convert a signed 32-bit integer to a signed n-bit integer.
 962  */
 963
 964 static u32 s32ton(__s32 value, unsigned n)
 965 {
 966         s32 a = value >> (n - 1);
 967         if (a && a != -1)
 968                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
 969         return value & ((1 << n) - 1);
 970 }
 971
 972 /*
 973  * Extract/implement a data field from/to a little endian report (bit array).
 974  *
 975  * Code sort-of follows HID spec:
 976  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
 977  *
 978  * While the USB HID spec allows unlimited length bit fields in "report
 979  * descriptors", most devices never use more than 16 bits.
 980  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
 981  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
 982  */
 983
 984 static __u32 extract(const struct hid_device *hid, __u8 *report,
 985                      unsigned offset, unsigned n)
 986 {
 987         u64 x;
 988
 989         if (n > 32)
 990                 hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
 991                          n, current->comm);
 992
 993         report += offset >> 3;  /* adjust byte index */
 994         offset &= 7;            /* now only need bit offset into one byte */
 995         x = get_unaligned_le64(report);
 996         x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
 997         return (u32) x;
 998 }
 999
1000 /*
1001  * "implement" : set bits in a little endian bit stream.
1002  * Same concepts as "extract" (see comments above).
1003  * The data mangled in the bit stream remains in little endian
1004  * order the whole time. It make more sense to talk about
1005  * endianness of register values by considering a register
1006  * a "cached" copy of the little endiad bit stream.
1007  */
1008 static void implement(const struct hid_device *hid, __u8 *report,
1009                       unsigned offset, unsigned n, __u32 value)
1010 {
1011         u64 x;
1012         u64 m = (1ULL << n) - 1;
1013
1014         if (n > 32)
1015                 hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
1016                          __func__, n, current->comm);
1017
1018         if (value > m)
1019                 hid_warn(hid, "%s() called with too large value %d! (%s)\n",
1020                          __func__, value, current->comm);
1021         WARN_ON(value > m);
1022         value &= m;
1023
1024         report += offset >> 3;
1025         offset &= 7;
1026
1027         x = get_unaligned_le64(report);
1028         x &= ~(m << offset);
1029         x |= ((u64)value) << offset;
1030         put_unaligned_le64(x, report);
1031 }
1032
1033 /*
1034  * Search an array for a value.
1035  */
1036
1037 static int search(__s32 *array, __s32 value, unsigned n)
1038 {
1039         while (n--) {
1040                 if (*array++ == value)
1041                         return 0;
1042         }
1043         return -1;
1044 }
1045
1046 /**
1047  * hid_match_report - check if driver's raw_event should be called
1048  *
1049  * @hid: hid device
1050  * @report_type: type to match against
1051  *
1052  * compare hid->driver->report_table->report_type to report->type
1053  */
1054 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
1055 {
1056         const struct hid_report_id *id = hid->driver->report_table;
1057
1058         if (!id) /* NULL means all */
1059                 return 1;
1060
1061         for (; id->report_type != HID_TERMINATOR; id++)
1062                 if (id->report_type == HID_ANY_ID ||
1063                                 id->report_type == report->type)
1064                         return 1;
1065         return 0;
1066 }
1067
1068 /**
1069  * hid_match_usage - check if driver's event should be called
1070  *
1071  * @hid: hid device
1072  * @usage: usage to match against
1073  *
1074  * compare hid->driver->usage_table->usage_{type,code} to
1075  * usage->usage_{type,code}
1076  */
1077 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1078 {
1079         const struct hid_usage_id *id = hid->driver->usage_table;
1080
1081         if (!id) /* NULL means all */
1082                 return 1;
1083
1084         for (; id->usage_type != HID_ANY_ID - 1; id++)
1085                 if ((id->usage_hid == HID_ANY_ID ||
1086                                 id->usage_hid == usage->hid) &&
1087                                 (id->usage_type == HID_ANY_ID ||
1088                                 id->usage_type == usage->type) &&
1089                                 (id->usage_code == HID_ANY_ID ||
1090                                  id->usage_code == usage->code))
1091                         return 1;
1092         return 0;
1093 }
1094
1095 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1096                 struct hid_usage *usage, __s32 value, int interrupt)
1097 {
1098         struct hid_driver *hdrv = hid->driver;
1099         int ret;
1100
1101         if (!list_empty(&hid->debug_list))
1102                 hid_dump_input(hid, usage, value);
1103
1104         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1105                 ret = hdrv->event(hid, field, usage, value);
1106                 if (ret != 0) {
1107                         if (ret < 0)
1108                                 hid_err(hid, "%s's event failed with %d\n",
1109                                                 hdrv->name, ret);
1110                         return;
1111                 }
1112         }
1113
1114         if (hid->claimed & HID_CLAIMED_INPUT)
1115                 hidinput_hid_event(hid, field, usage, value);
1116         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1117                 hid->hiddev_hid_event(hid, field, usage, value);
1118 }
1119
1120 /*
1121  * Analyse a received field, and fetch the data from it. The field
1122  * content is stored for next report processing (we do differential
1123  * reporting to the layer).
1124  */
1125
1126 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1127                             __u8 *data, int interrupt)
1128 {
1129         unsigned n;
1130         unsigned count = field->report_count;
1131         unsigned offset = field->report_offset;
1132         unsigned size = field->report_size;
1133         __s32 min = field->logical_minimum;
1134         __s32 max = field->logical_maximum;
1135         __s32 *value;
1136
1137         value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1138         if (!value)
1139                 return;
1140
1141         for (n = 0; n < count; n++) {
1142
1143                 value[n] = min < 0 ?
1144                         snto32(extract(hid, data, offset + n * size, size),
1145                                size) :
1146                         extract(hid, data, offset + n * size, size);
1147
1148                 /* Ignore report if ErrorRollOver */
1149                 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1150                     value[n] >= min && value[n] <= max &&
1151                     field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1152                         goto exit;
1153         }
1154
1155         for (n = 0; n < count; n++) {
1156
1157                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1158                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1159                         continue;
1160                 }
1161
1162                 if (field->value[n] >= min && field->value[n] <= max
1163                         && field->usage[field->value[n] - min].hid
1164                         && search(value, field->value[n], count))
1165                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1166
1167                 if (value[n] >= min && value[n] <= max
1168                         && field->usage[value[n] - min].hid
1169                         && search(field->value, value[n], count))
1170                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1171         }
1172
1173         memcpy(field->value, value, count * sizeof(__s32));
1174 exit:
1175         kfree(value);
1176 }
1177
1178 /*
1179  * Output the field into the report.
1180  */
1181
1182 static void hid_output_field(const struct hid_device *hid,
1183                              struct hid_field *field, __u8 *data)
1184 {
1185         unsigned count = field->report_count;
1186         unsigned offset = field->report_offset;
1187         unsigned size = field->report_size;
1188         unsigned n;
1189
1190         for (n = 0; n < count; n++) {
1191                 if (field->logical_minimum < 0) /* signed values */
1192                         implement(hid, data, offset + n * size, size,
1193                                   s32ton(field->value[n], size));
1194                 else                            /* unsigned values */
1195                         implement(hid, data, offset + n * size, size,
1196                                   field->value[n]);
1197         }
1198 }
1199
1200 /*
1201  * Create a report. 'data' has to be allocated using
1202  * hid_alloc_report_buf() so that it has proper size.
1203  */
1204
1205 void hid_output_report(struct hid_report *report, __u8 *data)
1206 {
1207         unsigned n;
1208
1209         if (report->id > 0)
1210                 *data++ = report->id;
1211
1212         memset(data, 0, ((report->size - 1) >> 3) + 1);
1213         for (n = 0; n < report->maxfield; n++)
1214                 hid_output_field(report->device, report->field[n], data);
1215 }
1216 EXPORT_SYMBOL_GPL(hid_output_report);
1217
1218 /*
1219  * Allocator for buffer that is going to be passed to hid_output_report()
1220  */
1221 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
1222 {
1223         /*
1224          * 7 extra bytes are necessary to achieve proper functionality
1225          * of implement() working on 8 byte chunks
1226          */
1227
1228         int len = ((report->size - 1) >> 3) + 1 + (report->id > 0) + 7;
1229
1230         return kmalloc(len, flags);
1231 }
1232 EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
1233
1234 /*
1235  * Set a field value. The report this field belongs to has to be
1236  * created and transferred to the device, to set this value in the
1237  * device.
1238  */
1239
1240 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1241 {
1242         unsigned size;
1243
1244         if (!field)
1245                 return -1;
1246
1247         size = field->report_size;
1248
1249         hid_dump_input(field->report->device, field->usage + offset, value);
1250
1251         if (offset >= field->report_count) {
1252                 hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1253                                 offset, field->report_count);
1254                 return -1;
1255         }
1256         if (field->logical_minimum < 0) {
1257                 if (value != snto32(s32ton(value, size), size)) {
1258                         hid_err(field->report->device, "value %d is out of range\n", value);
1259                         return -1;
1260                 }
1261         }
1262         field->value[offset] = value;
1263         return 0;
1264 }
1265 EXPORT_SYMBOL_GPL(hid_set_field);
1266
1267 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1268                 const u8 *data)
1269 {
1270         struct hid_report *report;
1271         unsigned int n = 0;     /* Normally report number is 0 */
1272
1273         /* Device uses numbered reports, data[0] is report number */
1274         if (report_enum->numbered)
1275                 n = *data;
1276
1277         report = report_enum->report_id_hash[n];
1278         if (report == NULL)
1279                 dbg_hid("undefined report_id %u received\n", n);
1280
1281         return report;
1282 }
1283
1284 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1285                 int interrupt)
1286 {
1287         struct hid_report_enum *report_enum = hid->report_enum + type;
1288         struct hid_report *report;
1289         struct hid_driver *hdrv;
1290         unsigned int a;
1291         int rsize, csize = size;
1292         u8 *cdata = data;
1293         int ret = 0;
1294
1295         report = hid_get_report(report_enum, data);
1296         if (!report)
1297                 goto out;
1298
1299         if (report_enum->numbered) {
1300                 cdata++;
1301                 csize--;
1302         }
1303
1304         rsize = ((report->size - 1) >> 3) + 1;
1305
1306         if (rsize > HID_MAX_BUFFER_SIZE)
1307                 rsize = HID_MAX_BUFFER_SIZE;
1308
1309         if (csize < rsize) {
1310                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1311                                 csize, rsize);
1312                 memset(cdata + csize, 0, rsize - csize);
1313         }
1314
1315         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1316                 hid->hiddev_report_event(hid, report);
1317         if (hid->claimed & HID_CLAIMED_HIDRAW) {
1318                 ret = hidraw_report_event(hid, data, size);
1319                 if (ret)
1320                         goto out;
1321         }
1322
1323         if (hid->claimed != HID_CLAIMED_HIDRAW && report->maxfield) {
1324                 for (a = 0; a < report->maxfield; a++)
1325                         hid_input_field(hid, report->field[a], cdata, interrupt);
1326                 hdrv = hid->driver;
1327                 if (hdrv && hdrv->report)
1328                         hdrv->report(hid, report);
1329         }
1330
1331         if (hid->claimed & HID_CLAIMED_INPUT)
1332                 hidinput_report_event(hid, report);
1333 out:
1334         return ret;
1335 }
1336 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1337
1338 /**
1339  * hid_input_report - report data from lower layer (usb, bt...)
1340  *
1341  * @hid: hid device
1342  * @type: HID report type (HID_*_REPORT)
1343  * @data: report contents
1344  * @size: size of data parameter
1345  * @interrupt: distinguish between interrupt and control transfers
1346  *
1347  * This is data entry for lower layers.
1348  */
1349 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1350 {
1351         struct hid_report_enum *report_enum;
1352         struct hid_driver *hdrv;
1353         struct hid_report *report;
1354         int ret = 0;
1355
1356         if (!hid)
1357                 return -ENODEV;
1358
1359         if (down_trylock(&hid->driver_input_lock))
1360                 return -EBUSY;
1361
1362         if (!hid->driver) {
1363                 ret = -ENODEV;
1364                 goto unlock;
1365         }
1366         report_enum = hid->report_enum + type;
1367         hdrv = hid->driver;
1368
1369         if (!size) {
1370                 dbg_hid("empty report\n");
1371                 ret = -1;
1372                 goto unlock;
1373         }
1374
1375         /* Avoid unnecessary overhead if debugfs is disabled */
1376         if (!list_empty(&hid->debug_list))
1377                 hid_dump_report(hid, type, data, size);
1378
1379         report = hid_get_report(report_enum, data);
1380
1381         if (!report) {
1382                 ret = -1;
1383                 goto unlock;
1384         }
1385
1386         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1387                 ret = hdrv->raw_event(hid, report, data, size);
1388                 if (ret != 0) {
1389                         ret = ret < 0 ? ret : 0;
1390                         goto unlock;
1391                 }
1392         }
1393
1394         ret = hid_report_raw_event(hid, type, data, size, interrupt);
1395
1396 unlock:
1397         up(&hid->driver_input_lock);
1398         return ret;
1399 }
1400 EXPORT_SYMBOL_GPL(hid_input_report);
1401
1402 static bool hid_match_one_id(struct hid_device *hdev,
1403                 const struct hid_device_id *id)
1404 {
1405         return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1406                 (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1407                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1408                 (id->product == HID_ANY_ID || id->product == hdev->product);
1409 }
1410
1411 const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1412                 const struct hid_device_id *id)
1413 {
1414         for (; id->bus; id++)
1415                 if (hid_match_one_id(hdev, id))
1416                         return id;
1417
1418         return NULL;
1419 }
1420
1421 static const struct hid_device_id hid_hiddev_list[] = {
1422         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1423         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1424         { }
1425 };
1426
1427 static bool hid_hiddev(struct hid_device *hdev)
1428 {
1429         return !!hid_match_id(hdev, hid_hiddev_list);
1430 }
1431
1432
1433 static ssize_t
1434 read_report_descriptor(struct file *filp, struct kobject *kobj,
1435                 struct bin_attribute *attr,
1436                 char *buf, loff_t off, size_t count)
1437 {
1438         struct device *dev = container_of(kobj, struct device, kobj);
1439         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1440
1441         if (off >= hdev->rsize)
1442                 return 0;
1443
1444         if (off + count > hdev->rsize)
1445                 count = hdev->rsize - off;
1446
1447         memcpy(buf, hdev->rdesc + off, count);
1448
1449         return count;
1450 }
1451
1452 static struct bin_attribute dev_bin_attr_report_desc = {
1453         .attr = { .name = "report_descriptor", .mode = 0444 },
1454         .read = read_report_descriptor,
1455         .size = HID_MAX_DESCRIPTOR_SIZE,
1456 };
1457
1458 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1459 {
1460         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1461                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1462                 "Multi-Axis Controller"
1463         };
1464         const char *type, *bus;
1465         char buf[64];
1466         unsigned int i;
1467         int len;
1468         int ret;
1469
1470         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1471                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1472         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1473                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1474         if (hdev->bus != BUS_USB)
1475                 connect_mask &= ~HID_CONNECT_HIDDEV;
1476         if (hid_hiddev(hdev))
1477                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1478
1479         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1480                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1481                 hdev->claimed |= HID_CLAIMED_INPUT;
1482
1483         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1484                         !hdev->hiddev_connect(hdev,
1485                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1486                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1487         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1488                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1489
1490         /* Drivers with the ->raw_event callback set are not required to connect
1491          * to any other listener. */
1492         if (!hdev->claimed && !hdev->driver->raw_event) {
1493                 hid_err(hdev, "device has no listeners, quitting\n");
1494                 return -ENODEV;
1495         }
1496
1497         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1498                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1499                 hdev->ff_init(hdev);
1500
1501         len = 0;
1502         if (hdev->claimed & HID_CLAIMED_INPUT)
1503                 len += sprintf(buf + len, "input");
1504         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1505                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1506                                 hdev->minor);
1507         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1508                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1509                                 ((struct hidraw *)hdev->hidraw)->minor);
1510
1511         type = "Device";
1512         for (i = 0; i < hdev->maxcollection; i++) {
1513                 struct hid_collection *col = &hdev->collection[i];
1514                 if (col->type == HID_COLLECTION_APPLICATION &&
1515                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1516                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1517                         type = types[col->usage & 0xffff];
1518                         break;
1519                 }
1520         }
1521
1522         switch (hdev->bus) {
1523         case BUS_USB:
1524                 bus = "USB";
1525                 break;
1526         case BUS_BLUETOOTH:
1527                 bus = "BLUETOOTH";
1528                 break;
1529         default:
1530                 bus = "<UNKNOWN>";
1531         }
1532
1533         ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1534         if (ret)
1535                 hid_warn(hdev,
1536                          "can't create sysfs report descriptor attribute err: %d\n", ret);
1537
1538         hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1539                  buf, bus, hdev->version >> 8, hdev->version & 0xff,
1540                  type, hdev->name, hdev->phys);
1541
1542         return 0;
1543 }
1544 EXPORT_SYMBOL_GPL(hid_connect);
1545
1546 void hid_disconnect(struct hid_device *hdev)
1547 {
1548         device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1549         if (hdev->claimed & HID_CLAIMED_INPUT)
1550                 hidinput_disconnect(hdev);
1551         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1552                 hdev->hiddev_disconnect(hdev);
1553         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1554                 hidraw_disconnect(hdev);
1555 }
1556 EXPORT_SYMBOL_GPL(hid_disconnect);
1557
1558 /*
1559  * A list of devices for which there is a specialized driver on HID bus.
1560  *
1561  * Please note that for multitouch devices (driven by hid-multitouch driver),
1562  * there is a proper autodetection and autoloading in place (based on presence
1563  * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1564  * as we are doing the right thing in hid_scan_usage().
1565  *
1566  * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1567  * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1568  * used as a driver. See hid_scan_report().
1569  */
1570 static const struct hid_device_id hid_have_special_driver[] = {
1571         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1572         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1573         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1574         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1575         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0xf705) },
1576         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1577         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1578         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1579         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1580         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1581         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1582         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1583         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1584         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1585         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1586         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1587         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1588         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1589         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1590         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1591         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1592         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1593         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1594         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1595         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1596         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1597         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1598         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1599         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1600         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1601         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1602         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1603         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1604         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1605         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1606         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1607         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1608         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1609         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1610         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1611         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1612         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1613         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1614         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1615         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1616         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1617         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1618         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1619         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1620         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1621         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1622         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1623         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1624         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1625         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1626         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1627         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1628         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1629         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1630         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1631         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1632         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1633         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1634         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1635         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1636         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1637         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1638         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1639         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1640         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1641         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1642         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1643         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1644         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1645         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1646         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1647         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1648         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1649         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1650         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1651         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1652         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1653         { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1654         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1655         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1656         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1657         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1658         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1659         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1660         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1661         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1662         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1663         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1664         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1665         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1666         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1667         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1668         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1669         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1670         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1671         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1672         { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1673         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1674         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1675         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1676         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1677         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1678         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1679         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1680         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1681         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1682         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1683         { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1684         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1685         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1686         { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1687         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1688         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1689         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1690         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X_2) },
1691         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1692         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1693         { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1694 #if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
1695         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1696 #endif
1697         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1698         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1699         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1700         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1701         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1702         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1703         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1704         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1705         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1706         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1707         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1708         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1709         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1710         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1711         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1712         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1713         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1714         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1715         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1716         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1717         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1718         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_VIBRATION_WHEEL) },
1719         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1720         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1721         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1722         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1723 #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1724         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1725         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1726 #endif
1727         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1728         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1729         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1730         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1731         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1732         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1733         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1734         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1735         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1736         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1737         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1738         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1739         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1740         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1741         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1742         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1743         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1744         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1745         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1746         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1747         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1748         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1749         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1750         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1751         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1752         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1753         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1754         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1755         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1756         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1757         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1758         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1759         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1760         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1761         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1762         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1763         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1764         { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1765 #if IS_ENABLED(CONFIG_HID_ROCCAT)
1766         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1767         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1768         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKUFX) },
1769         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1770         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1771         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
1772         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
1773         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEXTD) },
1774         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1775         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
1776         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1777         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1778         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1779 #endif
1780         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1781         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1782         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1783         { HID_USB_DEVICE(USB_VENDOR_ID_SIS2_TOUCH, USB_DEVICE_ID_SIS9200_TOUCH) },
1784         { HID_USB_DEVICE(USB_VENDOR_ID_SIS2_TOUCH, USB_DEVICE_ID_SIS817_TOUCH) },
1785         { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1786         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1787         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1788         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1789         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1790         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1791         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
1792         { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
1793         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1794         { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
1795         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1796         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1797         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1798         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1799         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1800         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1801         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1802         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1803         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1804         { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1805         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1806         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1807         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1808         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1809         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1810         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1811         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1812         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1813         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1814         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1815         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1816         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1817         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1818         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1819         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1820         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1821         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1822         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
1823         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1824         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1825         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1826         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1827         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1828         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1829         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1830         { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1831         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1832         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1833         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1834
1835         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1836         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1837         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1838         { }
1839 };
1840
1841 struct hid_dynid {
1842         struct list_head list;
1843         struct hid_device_id id;
1844 };
1845
1846 /**
1847  * store_new_id - add a new HID device ID to this driver and re-probe devices
1848  * @driver: target device driver
1849  * @buf: buffer for scanning device ID data
1850  * @count: input size
1851  *
1852  * Adds a new dynamic hid device ID to this driver,
1853  * and causes the driver to probe for all devices again.
1854  */
1855 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1856                 size_t count)
1857 {
1858         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1859         struct hid_dynid *dynid;
1860         __u32 bus, vendor, product;
1861         unsigned long driver_data = 0;
1862         int ret;
1863
1864         ret = sscanf(buf, "%x %x %x %lx",
1865                         &bus, &vendor, &product, &driver_data);
1866         if (ret < 3)
1867                 return -EINVAL;
1868
1869         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1870         if (!dynid)
1871                 return -ENOMEM;
1872
1873         dynid->id.bus = bus;
1874         dynid->id.group = HID_GROUP_ANY;
1875         dynid->id.vendor = vendor;
1876         dynid->id.product = product;
1877         dynid->id.driver_data = driver_data;
1878
1879         spin_lock(&hdrv->dyn_lock);
1880         list_add_tail(&dynid->list, &hdrv->dyn_list);
1881         spin_unlock(&hdrv->dyn_lock);
1882
1883         ret = driver_attach(&hdrv->driver);
1884
1885         return ret ? : count;
1886 }
1887 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1888
1889 static void hid_free_dynids(struct hid_driver *hdrv)
1890 {
1891         struct hid_dynid *dynid, *n;
1892
1893         spin_lock(&hdrv->dyn_lock);
1894         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1895                 list_del(&dynid->list);
1896                 kfree(dynid);
1897         }
1898         spin_unlock(&hdrv->dyn_lock);
1899 }
1900
1901 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1902                 struct hid_driver *hdrv)
1903 {
1904         struct hid_dynid *dynid;
1905
1906         spin_lock(&hdrv->dyn_lock);
1907         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1908                 if (hid_match_one_id(hdev, &dynid->id)) {
1909                         spin_unlock(&hdrv->dyn_lock);
1910                         return &dynid->id;
1911                 }
1912         }
1913         spin_unlock(&hdrv->dyn_lock);
1914
1915         return hid_match_id(hdev, hdrv->id_table);
1916 }
1917
1918 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1919 {
1920         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1921         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1922
1923         return hid_match_device(hdev, hdrv) != NULL;
1924 }
1925
1926 static int hid_device_probe(struct device *dev)
1927 {
1928         struct hid_driver *hdrv = container_of(dev->driver,
1929                         struct hid_driver, driver);
1930         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1931         const struct hid_device_id *id;
1932         int ret = 0;
1933
1934         if (down_interruptible(&hdev->driver_lock))
1935                 return -EINTR;
1936         if (down_interruptible(&hdev->driver_input_lock)) {
1937                 ret = -EINTR;
1938                 goto unlock_driver_lock;
1939         }
1940         hdev->io_started = false;
1941
1942         if (!hdev->driver) {
1943                 id = hid_match_device(hdev, hdrv);
1944                 if (id == NULL) {
1945                         ret = -ENODEV;
1946                         goto unlock;
1947                 }
1948
1949                 hdev->driver = hdrv;
1950                 if (hdrv->probe) {
1951                         ret = hdrv->probe(hdev, id);
1952                 } else { /* default probe */
1953                         ret = hid_open_report(hdev);
1954                         if (!ret)
1955                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1956                 }
1957                 if (ret) {
1958                         hid_close_report(hdev);
1959                         hdev->driver = NULL;
1960                 }
1961         }
1962 unlock:
1963         if (!hdev->io_started)
1964                 up(&hdev->driver_input_lock);
1965 unlock_driver_lock:
1966         up(&hdev->driver_lock);
1967         return ret;
1968 }
1969
1970 static int hid_device_remove(struct device *dev)
1971 {
1972         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1973         struct hid_driver *hdrv;
1974         int ret = 0;
1975
1976         if (down_interruptible(&hdev->driver_lock))
1977                 return -EINTR;
1978         if (down_interruptible(&hdev->driver_input_lock)) {
1979                 ret = -EINTR;
1980                 goto unlock_driver_lock;
1981         }
1982         hdev->io_started = false;
1983
1984         hdrv = hdev->driver;
1985         if (hdrv) {
1986                 if (hdrv->remove)
1987                         hdrv->remove(hdev);
1988                 else /* default remove */
1989                         hid_hw_stop(hdev);
1990                 hid_close_report(hdev);
1991                 hdev->driver = NULL;
1992         }
1993
1994         if (!hdev->io_started)
1995                 up(&hdev->driver_input_lock);
1996 unlock_driver_lock:
1997         up(&hdev->driver_lock);
1998         return ret;
1999 }
2000
2001 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
2002                              char *buf)
2003 {
2004         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2005         int len;
2006
2007         len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
2008                        hdev->bus, hdev->group, hdev->vendor, hdev->product);
2009
2010         return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
2011 }
2012
2013 static struct device_attribute hid_dev_attrs[] = {
2014         __ATTR_RO(modalias),
2015         __ATTR_NULL,
2016 };
2017
2018 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
2019 {
2020         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2021
2022         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
2023                         hdev->bus, hdev->vendor, hdev->product))
2024                 return -ENOMEM;
2025
2026         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
2027                 return -ENOMEM;
2028
2029         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
2030                 return -ENOMEM;
2031
2032         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
2033                 return -ENOMEM;
2034
2035         if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
2036                            hdev->bus, hdev->group, hdev->vendor, hdev->product))
2037                 return -ENOMEM;
2038
2039         return 0;
2040 }
2041
2042 static struct bus_type hid_bus_type = {
2043         .name           = "hid",
2044         .dev_attrs      = hid_dev_attrs,
2045         .match          = hid_bus_match,
2046         .probe          = hid_device_probe,
2047         .remove         = hid_device_remove,
2048         .uevent         = hid_uevent,
2049 };
2050
2051 /* a list of devices that shouldn't be handled by HID core at all */
2052 static const struct hid_device_id hid_ignore_list[] = {
2053         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
2054         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
2055         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
2056         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
2057         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
2058         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
2059         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
2060         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
2061         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
2062         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
2063         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
2064         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
2065         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
2066         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
2067         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
2068         { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
2069         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
2070         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
2071         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
2072         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
2073         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
2074         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
2075         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
2076         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
2077         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
2078         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
2079         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
2080         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
2081         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
2082         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
2083         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
2084         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
2085         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
2086         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
2087         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
2088         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
2089         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
2090         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
2091         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
2092         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
2093         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
2094         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2095         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2096         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2097         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2098         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2099         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2100         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2101         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2102         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2103         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2104         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2105         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2106         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2107         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2108         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2109         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2110         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2111         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2112         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2113         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2114         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2115         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2116         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2117         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2118         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2119         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2120         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2121         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2122         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2123         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2124         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2125         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2126         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2127         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2128         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2129         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2130         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2131         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2132         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2133         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2134         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2135         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2136         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2137         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2138         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2139         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2140         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2141         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2142         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2143         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2144         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2145         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2146         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2147         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2148         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2149         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2150         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2151         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2152         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2153         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2154         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2155         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2156         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2157         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2158         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2159         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2160         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2161         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2162         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2163         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2164         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2165         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2166         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2167         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2168         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2169         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2170         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2171         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2172         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2173         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2174         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2175         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2176         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2177         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2178         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2179         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2180         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2181         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2182         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2183         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2184         { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2185         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2186         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2187         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2188         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2189         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2190         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2191         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2192         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2193         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2194         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2195         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2196         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2197         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2198         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2199         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2200         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2201         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2202         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2203         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2204         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2205         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2206 #if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2207         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2208         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2209         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2210         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2211         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2212         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2213         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2214         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2215 #endif
2216         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2217         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2218         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2219         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2220         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2221         { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
2222         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2223         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2224         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2225         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2226         { }
2227 };
2228
2229 /**
2230  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2231  *
2232  * There are composite devices for which we want to ignore only a certain
2233  * interface. This is a list of devices for which only the mouse interface will
2234  * be ignored. This allows a dedicated driver to take care of the interface.
2235  */
2236 static const struct hid_device_id hid_mouse_ignore_list[] = {
2237         /* appletouch driver */
2238         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2239         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2240         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2241         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2242         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2243         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2244         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2245         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2246         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2247         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2248         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2249         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2250         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2251         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2252         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2253         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2254         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2255         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2256         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2257         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2258         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2259         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2260         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2261         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2262         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2263         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2264         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2265         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2266         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2267         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2268         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2269         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2270         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2271         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2272         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2273         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2274         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2275         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2276         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2277         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2278         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2279         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2280         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2281         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2282         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2283         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2284         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2285         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2286         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2287         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2288         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2289         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2290         { }
2291 };
2292
2293 bool hid_ignore(struct hid_device *hdev)
2294 {
2295         if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2296                 return false;
2297         if (hdev->quirks & HID_QUIRK_IGNORE)
2298                 return true;
2299
2300         switch (hdev->vendor) {
2301         case USB_VENDOR_ID_CODEMERCS:
2302                 /* ignore all Code Mercenaries IOWarrior devices */
2303                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2304                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2305                         return true;
2306                 break;
2307         case USB_VENDOR_ID_LOGITECH:
2308                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2309                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2310                         return true;
2311                 /*
2312                  * The Keene FM transmitter USB device has the same USB ID as
2313                  * the Logitech AudioHub Speaker, but it should ignore the hid.
2314                  * Check if the name is that of the Keene device.
2315                  * For reference: the name of the AudioHub is
2316                  * "HOLTEK  AudioHub Speaker".
2317                  */
2318                 if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2319                         !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2320                                 return true;
2321                 break;
2322         case USB_VENDOR_ID_SOUNDGRAPH:
2323                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2324                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2325                         return true;
2326                 break;
2327         case USB_VENDOR_ID_HANWANG:
2328                 if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2329                     hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2330                         return true;
2331                 break;
2332         case USB_VENDOR_ID_JESS:
2333                 if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2334                                 hdev->type == HID_TYPE_USBNONE)
2335                         return true;
2336                 break;
2337         case USB_VENDOR_ID_VELLEMAN:
2338                 /* These are not HID devices.  They are handled by comedi. */
2339                 if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2340                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2341                     (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2342                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2343                         return true;
2344                 break;
2345         case USB_VENDOR_ID_ATMEL_V_USB:
2346                 /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2347                  * it has the same USB ID as many Atmel V-USB devices. This
2348                  * usb radio is handled by radio-ma901.c driver so we want
2349                  * ignore the hid. Check the name, bus, product and ignore
2350                  * if we have MA901 usb radio.
2351                  */
2352                 if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2353                         hdev->bus == BUS_USB &&
2354                         strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2355                         return true;
2356                 break;
2357         }
2358
2359         if (hdev->type == HID_TYPE_USBMOUSE &&
2360                         hid_match_id(hdev, hid_mouse_ignore_list))
2361                 return true;
2362
2363         return !!hid_match_id(hdev, hid_ignore_list);
2364 }
2365 EXPORT_SYMBOL_GPL(hid_ignore);
2366
2367 int hid_add_device(struct hid_device *hdev)
2368 {
2369         static atomic_t id = ATOMIC_INIT(0);
2370         int ret;
2371
2372         if (WARN_ON(hdev->status & HID_STAT_ADDED))
2373                 return -EBUSY;
2374
2375         /* we need to kill them here, otherwise they will stay allocated to
2376          * wait for coming driver */
2377         if (hid_ignore(hdev))
2378                 return -ENODEV;
2379
2380         /*
2381          * Read the device report descriptor once and use as template
2382          * for the driver-specific modifications.
2383          */
2384         ret = hdev->ll_driver->parse(hdev);
2385         if (ret)
2386                 return ret;
2387         if (!hdev->dev_rdesc)
2388                 return -ENODEV;
2389
2390         /*
2391          * Scan generic devices for group information
2392          */
2393         if (hid_ignore_special_drivers ||
2394             !hid_match_id(hdev, hid_have_special_driver)) {
2395                 ret = hid_scan_report(hdev);
2396                 if (ret)
2397                         hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2398         }
2399
2400         /* XXX hack, any other cleaner solution after the driver core
2401          * is converted to allow more than 20 bytes as the device name? */
2402         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2403                      hdev->vendor, hdev->product, atomic_inc_return(&id));
2404
2405         hid_debug_register(hdev, dev_name(&hdev->dev));
2406         ret = device_add(&hdev->dev);
2407         if (!ret)
2408                 hdev->status |= HID_STAT_ADDED;
2409         else
2410                 hid_debug_unregister(hdev);
2411
2412         return ret;
2413 }
2414 EXPORT_SYMBOL_GPL(hid_add_device);
2415
2416 /**
2417  * hid_allocate_device - allocate new hid device descriptor
2418  *
2419  * Allocate and initialize hid device, so that hid_destroy_device might be
2420  * used to free it.
2421  *
2422  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2423  * error value.
2424  */
2425 struct hid_device *hid_allocate_device(void)
2426 {
2427         struct hid_device *hdev;
2428         int ret = -ENOMEM;
2429
2430         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2431         if (hdev == NULL)
2432                 return ERR_PTR(ret);
2433
2434         device_initialize(&hdev->dev);
2435         hdev->dev.release = hid_device_release;
2436         hdev->dev.bus = &hid_bus_type;
2437
2438         hid_close_report(hdev);
2439
2440         init_waitqueue_head(&hdev->debug_wait);
2441         INIT_LIST_HEAD(&hdev->debug_list);
2442         spin_lock_init(&hdev->debug_list_lock);
2443         sema_init(&hdev->driver_lock, 1);
2444         sema_init(&hdev->driver_input_lock, 1);
2445
2446         return hdev;
2447 }
2448 EXPORT_SYMBOL_GPL(hid_allocate_device);
2449
2450 static void hid_remove_device(struct hid_device *hdev)
2451 {
2452         if (hdev->status & HID_STAT_ADDED) {
2453                 device_del(&hdev->dev);
2454                 hid_debug_unregister(hdev);
2455                 hdev->status &= ~HID_STAT_ADDED;
2456         }
2457         kfree(hdev->dev_rdesc);
2458         hdev->dev_rdesc = NULL;
2459         hdev->dev_rsize = 0;
2460 }
2461
2462 /**
2463  * hid_destroy_device - free previously allocated device
2464  *
2465  * @hdev: hid device
2466  *
2467  * If you allocate hid_device through hid_allocate_device, you should ever
2468  * free by this function.
2469  */
2470 void hid_destroy_device(struct hid_device *hdev)
2471 {
2472         hid_remove_device(hdev);
2473         put_device(&hdev->dev);
2474 }
2475 EXPORT_SYMBOL_GPL(hid_destroy_device);
2476
2477 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2478                 const char *mod_name)
2479 {
2480         int ret;
2481
2482         hdrv->driver.name = hdrv->name;
2483         hdrv->driver.bus = &hid_bus_type;
2484         hdrv->driver.owner = owner;
2485         hdrv->driver.mod_name = mod_name;
2486
2487         INIT_LIST_HEAD(&hdrv->dyn_list);
2488         spin_lock_init(&hdrv->dyn_lock);
2489
2490         ret = driver_register(&hdrv->driver);
2491         if (ret)
2492                 return ret;
2493
2494         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2495         if (ret)
2496                 driver_unregister(&hdrv->driver);
2497
2498         return ret;
2499 }
2500 EXPORT_SYMBOL_GPL(__hid_register_driver);
2501
2502 void hid_unregister_driver(struct hid_driver *hdrv)
2503 {
2504         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2505         driver_unregister(&hdrv->driver);
2506         hid_free_dynids(hdrv);
2507 }
2508 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2509
2510 int hid_check_keys_pressed(struct hid_device *hid)
2511 {
2512         struct hid_input *hidinput;
2513         int i;
2514
2515         if (!(hid->claimed & HID_CLAIMED_INPUT))
2516                 return 0;
2517
2518         list_for_each_entry(hidinput, &hid->inputs, list) {
2519                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2520                         if (hidinput->input->key[i])
2521                                 return 1;
2522         }
2523
2524         return 0;
2525 }
2526
2527 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2528
2529 static int __init hid_init(void)
2530 {
2531         int ret;
2532
2533         if (hid_debug)
2534                 pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2535                         "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2536
2537         ret = bus_register(&hid_bus_type);
2538         if (ret) {
2539                 pr_err("can't register hid bus\n");
2540                 goto err;
2541         }
2542
2543         ret = hidraw_init();
2544         if (ret)
2545                 goto err_bus;
2546
2547         hid_debug_init();
2548
2549         return 0;
2550 err_bus:
2551         bus_unregister(&hid_bus_type);
2552 err:
2553         return ret;
2554 }
2555
2556 static void __exit hid_exit(void)
2557 {
2558         hid_debug_exit();
2559         hidraw_exit();
2560         bus_unregister(&hid_bus_type);
2561 }
2562
2563 module_init(hid_init);
2564 module_exit(hid_exit);
2565
2566 MODULE_AUTHOR("Andreas Gal");
2567 MODULE_AUTHOR("Vojtech Pavlik");
2568 MODULE_AUTHOR("Jiri Kosina");
2569 MODULE_LICENSE(DRIVER_LICENSE);
2570