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) 2006-2010 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 /*
  54  * Register a new report for a device.
  55  */
  56
  57 struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
  58 {
  59         struct hid_report_enum *report_enum = device->report_enum + type;
  60         struct hid_report *report;
  61
  62         if (report_enum->report_id_hash[id])
  63                 return report_enum->report_id_hash[id];
  64
  65         report = kzalloc(sizeof(struct hid_report), GFP_KERNEL);
  66         if (!report)
  67                 return NULL;
  68
  69         if (id != 0)
  70                 report_enum->numbered = 1;
  71
  72         report->id = id;
  73         report->type = type;
  74         report->size = 0;
  75         report->device = device;
  76         report_enum->report_id_hash[id] = report;
  77
  78         list_add_tail(&report->list, &report_enum->report_list);
  79
  80         return report;
  81 }
  82 EXPORT_SYMBOL_GPL(hid_register_report);
  83
  84 /*
  85  * Register a new field for this report.
  86  */
  87
  88 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
  89 {
  90         struct hid_field *field;
  91
  92         if (report->maxfield == HID_MAX_FIELDS) {
  93                 dbg_hid("too many fields in report\n");
  94                 return NULL;
  95         }
  96
  97         field = kzalloc((sizeof(struct hid_field) +
  98                          usages * sizeof(struct hid_usage) +
  99                          values * sizeof(unsigned)), GFP_KERNEL);
 100         if (!field)
 101                 return NULL;
 102
 103         field->index = report->maxfield++;
 104         report->field[field->index] = field;
 105         field->usage = (struct hid_usage *)(field + 1);
 106         field->value = (s32 *)(field->usage + usages);
 107         field->report = report;
 108
 109         return field;
 110 }
 111
 112 /*
 113  * Open a collection. The type/usage is pushed on the stack.
 114  */
 115
 116 static int open_collection(struct hid_parser *parser, unsigned type)
 117 {
 118         struct hid_collection *collection;
 119         unsigned usage;
 120
 121         usage = parser->local.usage[0];
 122
 123         if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
 124                 dbg_hid("collection stack overflow\n");
 125                 return -1;
 126         }
 127
 128         if (parser->device->maxcollection == parser->device->collection_size) {
 129                 collection = kmalloc(sizeof(struct hid_collection) *
 130                                 parser->device->collection_size * 2, GFP_KERNEL);
 131                 if (collection == NULL) {
 132                         dbg_hid("failed to reallocate collection array\n");
 133                         return -1;
 134                 }
 135                 memcpy(collection, parser->device->collection,
 136                         sizeof(struct hid_collection) *
 137                         parser->device->collection_size);
 138                 memset(collection + parser->device->collection_size, 0,
 139                         sizeof(struct hid_collection) *
 140                         parser->device->collection_size);
 141                 kfree(parser->device->collection);
 142                 parser->device->collection = collection;
 143                 parser->device->collection_size *= 2;
 144         }
 145
 146         parser->collection_stack[parser->collection_stack_ptr++] =
 147                 parser->device->maxcollection;
 148
 149         collection = parser->device->collection +
 150                 parser->device->maxcollection++;
 151         collection->type = type;
 152         collection->usage = usage;
 153         collection->level = parser->collection_stack_ptr - 1;
 154
 155         if (type == HID_COLLECTION_APPLICATION)
 156                 parser->device->maxapplication++;
 157
 158         return 0;
 159 }
 160
 161 /*
 162  * Close a collection.
 163  */
 164
 165 static int close_collection(struct hid_parser *parser)
 166 {
 167         if (!parser->collection_stack_ptr) {
 168                 dbg_hid("collection stack underflow\n");
 169                 return -1;
 170         }
 171         parser->collection_stack_ptr--;
 172         return 0;
 173 }
 174
 175 /*
 176  * Climb up the stack, search for the specified collection type
 177  * and return the usage.
 178  */
 179
 180 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
 181 {
 182         struct hid_collection *collection = parser->device->collection;
 183         int n;
 184
 185         for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
 186                 unsigned index = parser->collection_stack[n];
 187                 if (collection[index].type == type)
 188                         return collection[index].usage;
 189         }
 190         return 0; /* we know nothing about this usage type */
 191 }
 192
 193 /*
 194  * Add a usage to the temporary parser table.
 195  */
 196
 197 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
 198 {
 199         if (parser->local.usage_index >= HID_MAX_USAGES) {
 200                 dbg_hid("usage index exceeded\n");
 201                 return -1;
 202         }
 203         parser->local.usage[parser->local.usage_index] = usage;
 204         parser->local.collection_index[parser->local.usage_index] =
 205                 parser->collection_stack_ptr ?
 206                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
 207         parser->local.usage_index++;
 208         return 0;
 209 }
 210
 211 /*
 212  * Register a new field for this report.
 213  */
 214
 215 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
 216 {
 217         struct hid_report *report;
 218         struct hid_field *field;
 219         int usages;
 220         unsigned offset;
 221         int i;
 222
 223         report = hid_register_report(parser->device, report_type, parser->global.report_id);
 224         if (!report) {
 225                 dbg_hid("hid_register_report failed\n");
 226                 return -1;
 227         }
 228
 229         if (parser->global.logical_maximum < parser->global.logical_minimum) {
 230                 dbg_hid("logical range invalid %d %d\n", parser->global.logical_minimum, parser->global.logical_maximum);
 231                 return -1;
 232         }
 233
 234         offset = report->size;
 235         report->size += parser->global.report_size * parser->global.report_count;
 236
 237         if (!parser->local.usage_index) /* Ignore padding fields */
 238                 return 0;
 239
 240         usages = max_t(int, parser->local.usage_index, parser->global.report_count);
 241
 242         field = hid_register_field(report, usages, parser->global.report_count);
 243         if (!field)
 244                 return 0;
 245
 246         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
 247         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
 248         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
 249
 250         for (i = 0; i < usages; i++) {
 251                 int j = i;
 252                 /* Duplicate the last usage we parsed if we have excess values */
 253                 if (i >= parser->local.usage_index)
 254                         j = parser->local.usage_index - 1;
 255                 field->usage[i].hid = parser->local.usage[j];
 256                 field->usage[i].collection_index =
 257                         parser->local.collection_index[j];
 258         }
 259
 260         field->maxusage = usages;
 261         field->flags = flags;
 262         field->report_offset = offset;
 263         field->report_type = report_type;
 264         field->report_size = parser->global.report_size;
 265         field->report_count = parser->global.report_count;
 266         field->logical_minimum = parser->global.logical_minimum;
 267         field->logical_maximum = parser->global.logical_maximum;
 268         field->physical_minimum = parser->global.physical_minimum;
 269         field->physical_maximum = parser->global.physical_maximum;
 270         field->unit_exponent = parser->global.unit_exponent;
 271         field->unit = parser->global.unit;
 272
 273         return 0;
 274 }
 275
 276 /*
 277  * Read data value from item.
 278  */
 279
 280 static u32 item_udata(struct hid_item *item)
 281 {
 282         switch (item->size) {
 283         case 1: return item->data.u8;
 284         case 2: return item->data.u16;
 285         case 4: return item->data.u32;
 286         }
 287         return 0;
 288 }
 289
 290 static s32 item_sdata(struct hid_item *item)
 291 {
 292         switch (item->size) {
 293         case 1: return item->data.s8;
 294         case 2: return item->data.s16;
 295         case 4: return item->data.s32;
 296         }
 297         return 0;
 298 }
 299
 300 /*
 301  * Process a global item.
 302  */
 303
 304 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
 305 {
 306         switch (item->tag) {
 307         case HID_GLOBAL_ITEM_TAG_PUSH:
 308
 309                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
 310                         dbg_hid("global environment stack overflow\n");
 311                         return -1;
 312                 }
 313
 314                 memcpy(parser->global_stack + parser->global_stack_ptr++,
 315                         &parser->global, sizeof(struct hid_global));
 316                 return 0;
 317
 318         case HID_GLOBAL_ITEM_TAG_POP:
 319
 320                 if (!parser->global_stack_ptr) {
 321                         dbg_hid("global environment stack underflow\n");
 322                         return -1;
 323                 }
 324
 325                 memcpy(&parser->global, parser->global_stack +
 326                         --parser->global_stack_ptr, sizeof(struct hid_global));
 327                 return 0;
 328
 329         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
 330                 parser->global.usage_page = item_udata(item);
 331                 return 0;
 332
 333         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
 334                 parser->global.logical_minimum = item_sdata(item);
 335                 return 0;
 336
 337         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
 338                 if (parser->global.logical_minimum < 0)
 339                         parser->global.logical_maximum = item_sdata(item);
 340                 else
 341                         parser->global.logical_maximum = item_udata(item);
 342                 return 0;
 343
 344         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
 345                 parser->global.physical_minimum = item_sdata(item);
 346                 return 0;
 347
 348         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
 349                 if (parser->global.physical_minimum < 0)
 350                         parser->global.physical_maximum = item_sdata(item);
 351                 else
 352                         parser->global.physical_maximum = item_udata(item);
 353                 return 0;
 354
 355         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
 356                 parser->global.unit_exponent = item_sdata(item);
 357                 return 0;
 358
 359         case HID_GLOBAL_ITEM_TAG_UNIT:
 360                 parser->global.unit = item_udata(item);
 361                 return 0;
 362
 363         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
 364                 parser->global.report_size = item_udata(item);
 365                 if (parser->global.report_size > 96) {
 366                         dbg_hid("invalid report_size %d\n",
 367                                         parser->global.report_size);
 368                         return -1;
 369                 }
 370                 return 0;
 371
 372         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
 373                 parser->global.report_count = item_udata(item);
 374                 if (parser->global.report_count > HID_MAX_USAGES) {
 375                         dbg_hid("invalid report_count %d\n",
 376                                         parser->global.report_count);
 377                         return -1;
 378                 }
 379                 return 0;
 380
 381         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
 382                 parser->global.report_id = item_udata(item);
 383                 if (parser->global.report_id == 0) {
 384                         dbg_hid("report_id 0 is invalid\n");
 385                         return -1;
 386                 }
 387                 return 0;
 388
 389         default:
 390                 dbg_hid("unknown global tag 0x%x\n", item->tag);
 391                 return -1;
 392         }
 393 }
 394
 395 /*
 396  * Process a local item.
 397  */
 398
 399 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 400 {
 401         __u32 data;
 402         unsigned n;
 403
 404         data = item_udata(item);
 405
 406         switch (item->tag) {
 407         case HID_LOCAL_ITEM_TAG_DELIMITER:
 408
 409                 if (data) {
 410                         /*
 411                          * We treat items before the first delimiter
 412                          * as global to all usage sets (branch 0).
 413                          * In the moment we process only these global
 414                          * items and the first delimiter set.
 415                          */
 416                         if (parser->local.delimiter_depth != 0) {
 417                                 dbg_hid("nested delimiters\n");
 418                                 return -1;
 419                         }
 420                         parser->local.delimiter_depth++;
 421                         parser->local.delimiter_branch++;
 422                 } else {
 423                         if (parser->local.delimiter_depth < 1) {
 424                                 dbg_hid("bogus close delimiter\n");
 425                                 return -1;
 426                         }
 427                         parser->local.delimiter_depth--;
 428                 }
 429                 return 1;
 430
 431         case HID_LOCAL_ITEM_TAG_USAGE:
 432
 433                 if (parser->local.delimiter_branch > 1) {
 434                         dbg_hid("alternative usage ignored\n");
 435                         return 0;
 436                 }
 437
 438                 if (item->size <= 2)
 439                         data = (parser->global.usage_page << 16) + data;
 440
 441                 return hid_add_usage(parser, data);
 442
 443         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 444
 445                 if (parser->local.delimiter_branch > 1) {
 446                         dbg_hid("alternative usage ignored\n");
 447                         return 0;
 448                 }
 449
 450                 if (item->size <= 2)
 451                         data = (parser->global.usage_page << 16) + data;
 452
 453                 parser->local.usage_minimum = data;
 454                 return 0;
 455
 456         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 457
 458                 if (parser->local.delimiter_branch > 1) {
 459                         dbg_hid("alternative usage ignored\n");
 460                         return 0;
 461                 }
 462
 463                 if (item->size <= 2)
 464                         data = (parser->global.usage_page << 16) + data;
 465
 466                 for (n = parser->local.usage_minimum; n <= data; n++)
 467                         if (hid_add_usage(parser, n)) {
 468                                 dbg_hid("hid_add_usage failed\n");
 469                                 return -1;
 470                         }
 471                 return 0;
 472
 473         default:
 474
 475                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
 476                 return 0;
 477         }
 478         return 0;
 479 }
 480
 481 /*
 482  * Process a main item.
 483  */
 484
 485 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
 486 {
 487         __u32 data;
 488         int ret;
 489
 490         data = item_udata(item);
 491
 492         switch (item->tag) {
 493         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 494                 ret = open_collection(parser, data & 0xff);
 495                 break;
 496         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 497                 ret = close_collection(parser);
 498                 break;
 499         case HID_MAIN_ITEM_TAG_INPUT:
 500                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
 501                 break;
 502         case HID_MAIN_ITEM_TAG_OUTPUT:
 503                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
 504                 break;
 505         case HID_MAIN_ITEM_TAG_FEATURE:
 506                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
 507                 break;
 508         default:
 509                 dbg_hid("unknown main item tag 0x%x\n", item->tag);
 510                 ret = 0;
 511         }
 512
 513         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
 514
 515         return ret;
 516 }
 517
 518 /*
 519  * Process a reserved item.
 520  */
 521
 522 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
 523 {
 524         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
 525         return 0;
 526 }
 527
 528 /*
 529  * Free a report and all registered fields. The field->usage and
 530  * field->value table's are allocated behind the field, so we need
 531  * only to free(field) itself.
 532  */
 533
 534 static void hid_free_report(struct hid_report *report)
 535 {
 536         unsigned n;
 537
 538         for (n = 0; n < report->maxfield; n++)
 539                 kfree(report->field[n]);
 540         kfree(report);
 541 }
 542
 543 /*
 544  * Free a device structure, all reports, and all fields.
 545  */
 546
 547 static void hid_device_release(struct device *dev)
 548 {
 549         struct hid_device *device = container_of(dev, struct hid_device, dev);
 550         unsigned i, j;
 551
 552         for (i = 0; i < HID_REPORT_TYPES; i++) {
 553                 struct hid_report_enum *report_enum = device->report_enum + i;
 554
 555                 for (j = 0; j < 256; j++) {
 556                         struct hid_report *report = report_enum->report_id_hash[j];
 557                         if (report)
 558                                 hid_free_report(report);
 559                 }
 560         }
 561
 562         kfree(device->rdesc);
 563         kfree(device->collection);
 564         kfree(device);
 565 }
 566
 567 /*
 568  * Fetch a report description item from the data stream. We support long
 569  * items, though they are not used yet.
 570  */
 571
 572 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
 573 {
 574         u8 b;
 575
 576         if ((end - start) <= 0)
 577                 return NULL;
 578
 579         b = *start++;
 580
 581         item->type = (b >> 2) & 3;
 582         item->tag  = (b >> 4) & 15;
 583
 584         if (item->tag == HID_ITEM_TAG_LONG) {
 585
 586                 item->format = HID_ITEM_FORMAT_LONG;
 587
 588                 if ((end - start) < 2)
 589                         return NULL;
 590
 591                 item->size = *start++;
 592                 item->tag  = *start++;
 593
 594                 if ((end - start) < item->size)
 595                         return NULL;
 596
 597                 item->data.longdata = start;
 598                 start += item->size;
 599                 return start;
 600         }
 601
 602         item->format = HID_ITEM_FORMAT_SHORT;
 603         item->size = b & 3;
 604
 605         switch (item->size) {
 606         case 0:
 607                 return start;
 608
 609         case 1:
 610                 if ((end - start) < 1)
 611                         return NULL;
 612                 item->data.u8 = *start++;
 613                 return start;
 614
 615         case 2:
 616                 if ((end - start) < 2)
 617                         return NULL;
 618                 item->data.u16 = get_unaligned_le16(start);
 619                 start = (__u8 *)((__le16 *)start + 1);
 620                 return start;
 621
 622         case 3:
 623                 item->size++;
 624                 if ((end - start) < 4)
 625                         return NULL;
 626                 item->data.u32 = get_unaligned_le32(start);
 627                 start = (__u8 *)((__le32 *)start + 1);
 628                 return start;
 629         }
 630
 631         return NULL;
 632 }
 633
 634 /**
 635  * hid_parse_report - parse device report
 636  *
 637  * @device: hid device
 638  * @start: report start
 639  * @size: report size
 640  *
 641  * Parse a report description into a hid_device structure. Reports are
 642  * enumerated, fields are attached to these reports.
 643  * 0 returned on success, otherwise nonzero error value.
 644  */
 645 int hid_parse_report(struct hid_device *device, __u8 *start,
 646                 unsigned size)
 647 {
 648         struct hid_parser *parser;
 649         struct hid_item item;
 650         __u8 *end;
 651         int ret;
 652         static int (*dispatch_type[])(struct hid_parser *parser,
 653                                       struct hid_item *item) = {
 654                 hid_parser_main,
 655                 hid_parser_global,
 656                 hid_parser_local,
 657                 hid_parser_reserved
 658         };
 659
 660         if (device->driver->report_fixup)
 661                 start = device->driver->report_fixup(device, start, &size);
 662
 663         device->rdesc = kmemdup(start, size, GFP_KERNEL);
 664         if (device->rdesc == NULL)
 665                 return -ENOMEM;
 666         device->rsize = size;
 667
 668         parser = vzalloc(sizeof(struct hid_parser));
 669         if (!parser) {
 670                 ret = -ENOMEM;
 671                 goto err;
 672         }
 673
 674         parser->device = device;
 675
 676         end = start + size;
 677         ret = -EINVAL;
 678         while ((start = fetch_item(start, end, &item)) != NULL) {
 679
 680                 if (item.format != HID_ITEM_FORMAT_SHORT) {
 681                         dbg_hid("unexpected long global item\n");
 682                         goto err;
 683                 }
 684
 685                 if (dispatch_type[item.type](parser, &item)) {
 686                         dbg_hid("item %u %u %u %u parsing failed\n",
 687                                 item.format, (unsigned)item.size,
 688                                 (unsigned)item.type, (unsigned)item.tag);
 689                         goto err;
 690                 }
 691
 692                 if (start == end) {
 693                         if (parser->collection_stack_ptr) {
 694                                 dbg_hid("unbalanced collection at end of report description\n");
 695                                 goto err;
 696                         }
 697                         if (parser->local.delimiter_depth) {
 698                                 dbg_hid("unbalanced delimiter at end of report description\n");
 699                                 goto err;
 700                         }
 701                         vfree(parser);
 702                         return 0;
 703                 }
 704         }
 705
 706         dbg_hid("item fetching failed at offset %d\n", (int)(end - start));
 707 err:
 708         vfree(parser);
 709         return ret;
 710 }
 711 EXPORT_SYMBOL_GPL(hid_parse_report);
 712
 713 /*
 714  * Convert a signed n-bit integer to signed 32-bit integer. Common
 715  * cases are done through the compiler, the screwed things has to be
 716  * done by hand.
 717  */
 718
 719 static s32 snto32(__u32 value, unsigned n)
 720 {
 721         switch (n) {
 722         case 8:  return ((__s8)value);
 723         case 16: return ((__s16)value);
 724         case 32: return ((__s32)value);
 725         }
 726         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
 727 }
 728
 729 /*
 730  * Convert a signed 32-bit integer to a signed n-bit integer.
 731  */
 732
 733 static u32 s32ton(__s32 value, unsigned n)
 734 {
 735         s32 a = value >> (n - 1);
 736         if (a && a != -1)
 737                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
 738         return value & ((1 << n) - 1);
 739 }
 740
 741 /*
 742  * Extract/implement a data field from/to a little endian report (bit array).
 743  *
 744  * Code sort-of follows HID spec:
 745  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
 746  *
 747  * While the USB HID spec allows unlimited length bit fields in "report
 748  * descriptors", most devices never use more than 16 bits.
 749  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
 750  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
 751  */
 752
 753 static __u32 extract(const struct hid_device *hid, __u8 *report,
 754                      unsigned offset, unsigned n)
 755 {
 756         u64 x;
 757
 758         if (n > 32)
 759                 hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
 760                          n, current->comm);
 761
 762         report += offset >> 3;  /* adjust byte index */
 763         offset &= 7;            /* now only need bit offset into one byte */
 764         x = get_unaligned_le64(report);
 765         x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
 766         return (u32) x;
 767 }
 768
 769 /*
 770  * "implement" : set bits in a little endian bit stream.
 771  * Same concepts as "extract" (see comments above).
 772  * The data mangled in the bit stream remains in little endian
 773  * order the whole time. It make more sense to talk about
 774  * endianness of register values by considering a register
 775  * a "cached" copy of the little endiad bit stream.
 776  */
 777 static void implement(const struct hid_device *hid, __u8 *report,
 778                       unsigned offset, unsigned n, __u32 value)
 779 {
 780         u64 x;
 781         u64 m = (1ULL << n) - 1;
 782
 783         if (n > 32)
 784                 hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
 785                          __func__, n, current->comm);
 786
 787         if (value > m)
 788                 hid_warn(hid, "%s() called with too large value %d! (%s)\n",
 789                          __func__, value, current->comm);
 790         WARN_ON(value > m);
 791         value &= m;
 792
 793         report += offset >> 3;
 794         offset &= 7;
 795
 796         x = get_unaligned_le64(report);
 797         x &= ~(m << offset);
 798         x |= ((u64)value) << offset;
 799         put_unaligned_le64(x, report);
 800 }
 801
 802 /*
 803  * Search an array for a value.
 804  */
 805
 806 static int search(__s32 *array, __s32 value, unsigned n)
 807 {
 808         while (n--) {
 809                 if (*array++ == value)
 810                         return 0;
 811         }
 812         return -1;
 813 }
 814
 815 /**
 816  * hid_match_report - check if driver's raw_event should be called
 817  *
 818  * @hid: hid device
 819  * @report_type: type to match against
 820  *
 821  * compare hid->driver->report_table->report_type to report->type
 822  */
 823 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
 824 {
 825         const struct hid_report_id *id = hid->driver->report_table;
 826
 827         if (!id) /* NULL means all */
 828                 return 1;
 829
 830         for (; id->report_type != HID_TERMINATOR; id++)
 831                 if (id->report_type == HID_ANY_ID ||
 832                                 id->report_type == report->type)
 833                         return 1;
 834         return 0;
 835 }
 836
 837 /**
 838  * hid_match_usage - check if driver's event should be called
 839  *
 840  * @hid: hid device
 841  * @usage: usage to match against
 842  *
 843  * compare hid->driver->usage_table->usage_{type,code} to
 844  * usage->usage_{type,code}
 845  */
 846 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
 847 {
 848         const struct hid_usage_id *id = hid->driver->usage_table;
 849
 850         if (!id) /* NULL means all */
 851                 return 1;
 852
 853         for (; id->usage_type != HID_ANY_ID - 1; id++)
 854                 if ((id->usage_hid == HID_ANY_ID ||
 855                                 id->usage_hid == usage->hid) &&
 856                                 (id->usage_type == HID_ANY_ID ||
 857                                 id->usage_type == usage->type) &&
 858                                 (id->usage_code == HID_ANY_ID ||
 859                                  id->usage_code == usage->code))
 860                         return 1;
 861         return 0;
 862 }
 863
 864 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
 865                 struct hid_usage *usage, __s32 value, int interrupt)
 866 {
 867         struct hid_driver *hdrv = hid->driver;
 868         int ret;
 869
 870         hid_dump_input(hid, usage, value);
 871
 872         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
 873                 ret = hdrv->event(hid, field, usage, value);
 874                 if (ret != 0) {
 875                         if (ret < 0)
 876                                 dbg_hid("%s's event failed with %d\n",
 877                                                 hdrv->name, ret);
 878                         return;
 879                 }
 880         }
 881
 882         if (hid->claimed & HID_CLAIMED_INPUT)
 883                 hidinput_hid_event(hid, field, usage, value);
 884         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
 885                 hid->hiddev_hid_event(hid, field, usage, value);
 886 }
 887
 888 /*
 889  * Analyse a received field, and fetch the data from it. The field
 890  * content is stored for next report processing (we do differential
 891  * reporting to the layer).
 892  */
 893
 894 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
 895                             __u8 *data, int interrupt)
 896 {
 897         unsigned n;
 898         unsigned count = field->report_count;
 899         unsigned offset = field->report_offset;
 900         unsigned size = field->report_size;
 901         __s32 min = field->logical_minimum;
 902         __s32 max = field->logical_maximum;
 903         __s32 *value;
 904
 905         value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
 906         if (!value)
 907                 return;
 908
 909         for (n = 0; n < count; n++) {
 910
 911                 value[n] = min < 0 ?
 912                         snto32(extract(hid, data, offset + n * size, size),
 913                                size) :
 914                         extract(hid, data, offset + n * size, size);
 915
 916                 /* Ignore report if ErrorRollOver */
 917                 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
 918                     value[n] >= min && value[n] <= max &&
 919                     field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
 920                         goto exit;
 921         }
 922
 923         for (n = 0; n < count; n++) {
 924
 925                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
 926                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
 927                         continue;
 928                 }
 929
 930                 if (field->value[n] >= min && field->value[n] <= max
 931                         && field->usage[field->value[n] - min].hid
 932                         && search(value, field->value[n], count))
 933                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
 934
 935                 if (value[n] >= min && value[n] <= max
 936                         && field->usage[value[n] - min].hid
 937                         && search(field->value, value[n], count))
 938                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
 939         }
 940
 941         memcpy(field->value, value, count * sizeof(__s32));
 942 exit:
 943         kfree(value);
 944 }
 945
 946 /*
 947  * Output the field into the report.
 948  */
 949
 950 static void hid_output_field(const struct hid_device *hid,
 951                              struct hid_field *field, __u8 *data)
 952 {
 953         unsigned count = field->report_count;
 954         unsigned offset = field->report_offset;
 955         unsigned size = field->report_size;
 956         unsigned n;
 957
 958         for (n = 0; n < count; n++) {
 959                 if (field->logical_minimum < 0) /* signed values */
 960                         implement(hid, data, offset + n * size, size,
 961                                   s32ton(field->value[n], size));
 962                 else                            /* unsigned values */
 963                         implement(hid, data, offset + n * size, size,
 964                                   field->value[n]);
 965         }
 966 }
 967
 968 /*
 969  * Create a report.
 970  */
 971
 972 void hid_output_report(struct hid_report *report, __u8 *data)
 973 {
 974         unsigned n;
 975
 976         if (report->id > 0)
 977                 *data++ = report->id;
 978
 979         memset(data, 0, ((report->size - 1) >> 3) + 1);
 980         for (n = 0; n < report->maxfield; n++)
 981                 hid_output_field(report->device, report->field[n], data);
 982 }
 983 EXPORT_SYMBOL_GPL(hid_output_report);
 984
 985 /*
 986  * Set a field value. The report this field belongs to has to be
 987  * created and transferred to the device, to set this value in the
 988  * device.
 989  */
 990
 991 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
 992 {
 993         unsigned size = field->report_size;
 994
 995         hid_dump_input(field->report->device, field->usage + offset, value);
 996
 997         if (offset >= field->report_count) {
 998                 dbg_hid("offset (%d) exceeds report_count (%d)\n", offset, field->report_count);
 999                 return -1;
1000         }
1001         if (field->logical_minimum < 0) {
1002                 if (value != snto32(s32ton(value, size), size)) {
1003                         dbg_hid("value %d is out of range\n", value);
1004                         return -1;
1005                 }
1006         }
1007         field->value[offset] = value;
1008         return 0;
1009 }
1010 EXPORT_SYMBOL_GPL(hid_set_field);
1011
1012 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1013                 const u8 *data)
1014 {
1015         struct hid_report *report;
1016         unsigned int n = 0;     /* Normally report number is 0 */
1017
1018         /* Device uses numbered reports, data[0] is report number */
1019         if (report_enum->numbered)
1020                 n = *data;
1021
1022         report = report_enum->report_id_hash[n];
1023         if (report == NULL)
1024                 dbg_hid("undefined report_id %u received\n", n);
1025
1026         return report;
1027 }
1028
1029 void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1030                 int interrupt)
1031 {
1032         struct hid_report_enum *report_enum = hid->report_enum + type;
1033         struct hid_report *report;
1034         unsigned int a;
1035         int rsize, csize = size;
1036         u8 *cdata = data;
1037
1038         report = hid_get_report(report_enum, data);
1039         if (!report)
1040                 return;
1041
1042         if (report_enum->numbered) {
1043                 cdata++;
1044                 csize--;
1045         }
1046
1047         rsize = ((report->size - 1) >> 3) + 1;
1048
1049         if (rsize > HID_MAX_BUFFER_SIZE)
1050                 rsize = HID_MAX_BUFFER_SIZE;
1051
1052         if (csize < rsize) {
1053                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1054                                 csize, rsize);
1055                 memset(cdata + csize, 0, rsize - csize);
1056         }
1057
1058         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1059                 hid->hiddev_report_event(hid, report);
1060         if (hid->claimed & HID_CLAIMED_HIDRAW)
1061                 hidraw_report_event(hid, data, size);
1062
1063         for (a = 0; a < report->maxfield; a++)
1064                 hid_input_field(hid, report->field[a], cdata, interrupt);
1065
1066         if (hid->claimed & HID_CLAIMED_INPUT)
1067                 hidinput_report_event(hid, report);
1068 }
1069 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1070
1071 /**
1072  * hid_input_report - report data from lower layer (usb, bt...)
1073  *
1074  * @hid: hid device
1075  * @type: HID report type (HID_*_REPORT)
1076  * @data: report contents
1077  * @size: size of data parameter
1078  * @interrupt: distinguish between interrupt and control transfers
1079  *
1080  * This is data entry for lower layers.
1081  */
1082 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1083 {
1084         struct hid_report_enum *report_enum;
1085         struct hid_driver *hdrv;
1086         struct hid_report *report;
1087         char *buf;
1088         unsigned int i;
1089         int ret = 0;
1090
1091         if (!hid)
1092                 return -ENODEV;
1093
1094         if (down_trylock(&hid->driver_lock))
1095                 return -EBUSY;
1096
1097         if (!hid->driver) {
1098                 ret = -ENODEV;
1099                 goto unlock;
1100         }
1101         report_enum = hid->report_enum + type;
1102         hdrv = hid->driver;
1103
1104         if (!size) {
1105                 dbg_hid("empty report\n");
1106                 ret = -1;
1107                 goto unlock;
1108         }
1109
1110         buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
1111
1112         if (!buf)
1113                 goto nomem;
1114
1115         /* dump the report */
1116         snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1117                         "\nreport (size %u) (%snumbered) = ", size, report_enum->numbered ? "" : "un");
1118         hid_debug_event(hid, buf);
1119
1120         for (i = 0; i < size; i++) {
1121                 snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1122                                 " %02x", data[i]);
1123                 hid_debug_event(hid, buf);
1124         }
1125         hid_debug_event(hid, "\n");
1126         kfree(buf);
1127
1128 nomem:
1129         report = hid_get_report(report_enum, data);
1130
1131         if (!report) {
1132                 ret = -1;
1133                 goto unlock;
1134         }
1135
1136         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1137                 ret = hdrv->raw_event(hid, report, data, size);
1138                 if (ret != 0) {
1139                         ret = ret < 0 ? ret : 0;
1140                         goto unlock;
1141                 }
1142         }
1143
1144         hid_report_raw_event(hid, type, data, size, interrupt);
1145
1146 unlock:
1147         up(&hid->driver_lock);
1148         return ret;
1149 }
1150 EXPORT_SYMBOL_GPL(hid_input_report);
1151
1152 static bool hid_match_one_id(struct hid_device *hdev,
1153                 const struct hid_device_id *id)
1154 {
1155         return id->bus == hdev->bus &&
1156                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1157                 (id->product == HID_ANY_ID || id->product == hdev->product);
1158 }
1159
1160 static const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1161                 const struct hid_device_id *id)
1162 {
1163         for (; id->bus; id++)
1164                 if (hid_match_one_id(hdev, id))
1165                         return id;
1166
1167         return NULL;
1168 }
1169
1170 static const struct hid_device_id hid_hiddev_list[] = {
1171         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1172         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1173         { }
1174 };
1175
1176 static bool hid_hiddev(struct hid_device *hdev)
1177 {
1178         return !!hid_match_id(hdev, hid_hiddev_list);
1179 }
1180
1181
1182 static ssize_t
1183 read_report_descriptor(struct file *filp, struct kobject *kobj,
1184                 struct bin_attribute *attr,
1185                 char *buf, loff_t off, size_t count)
1186 {
1187         struct device *dev = container_of(kobj, struct device, kobj);
1188         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1189
1190         if (off >= hdev->rsize)
1191                 return 0;
1192
1193         if (off + count > hdev->rsize)
1194                 count = hdev->rsize - off;
1195
1196         memcpy(buf, hdev->rdesc + off, count);
1197
1198         return count;
1199 }
1200
1201 static struct bin_attribute dev_bin_attr_report_desc = {
1202         .attr = { .name = "report_descriptor", .mode = 0444 },
1203         .read = read_report_descriptor,
1204         .size = HID_MAX_DESCRIPTOR_SIZE,
1205 };
1206
1207 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1208 {
1209         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1210                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1211                 "Multi-Axis Controller"
1212         };
1213         const char *type, *bus;
1214         char buf[64];
1215         unsigned int i;
1216         int len;
1217         int ret;
1218
1219         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1220                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1221         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1222                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1223         if (hdev->bus != BUS_USB)
1224                 connect_mask &= ~HID_CONNECT_HIDDEV;
1225         if (hid_hiddev(hdev))
1226                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1227
1228         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1229                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1230                 hdev->claimed |= HID_CLAIMED_INPUT;
1231         if (hdev->quirks & HID_QUIRK_MULTITOUCH) {
1232                 /* this device should be handled by hid-multitouch, skip it */
1233                 hdev->quirks &= ~HID_QUIRK_MULTITOUCH;
1234                 return -ENODEV;
1235         }
1236
1237         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1238                         !hdev->hiddev_connect(hdev,
1239                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1240                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1241         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1242                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1243
1244         if (!hdev->claimed) {
1245                 hid_err(hdev, "claimed by neither input, hiddev nor hidraw\n");
1246                 return -ENODEV;
1247         }
1248
1249         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1250                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1251                 hdev->ff_init(hdev);
1252
1253         len = 0;
1254         if (hdev->claimed & HID_CLAIMED_INPUT)
1255                 len += sprintf(buf + len, "input");
1256         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1257                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1258                                 hdev->minor);
1259         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1260                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1261                                 ((struct hidraw *)hdev->hidraw)->minor);
1262
1263         type = "Device";
1264         for (i = 0; i < hdev->maxcollection; i++) {
1265                 struct hid_collection *col = &hdev->collection[i];
1266                 if (col->type == HID_COLLECTION_APPLICATION &&
1267                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1268                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1269                         type = types[col->usage & 0xffff];
1270                         break;
1271                 }
1272         }
1273
1274         switch (hdev->bus) {
1275         case BUS_USB:
1276                 bus = "USB";
1277                 break;
1278         case BUS_BLUETOOTH:
1279                 bus = "BLUETOOTH";
1280                 break;
1281         default:
1282                 bus = "<UNKNOWN>";
1283         }
1284
1285         ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1286         if (ret)
1287                 hid_warn(hdev,
1288                          "can't create sysfs report descriptor attribute err: %d\n", ret);
1289
1290         hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1291                  buf, bus, hdev->version >> 8, hdev->version & 0xff,
1292                  type, hdev->name, hdev->phys);
1293
1294         return 0;
1295 }
1296 EXPORT_SYMBOL_GPL(hid_connect);
1297
1298 void hid_disconnect(struct hid_device *hdev)
1299 {
1300         device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1301         if (hdev->claimed & HID_CLAIMED_INPUT)
1302                 hidinput_disconnect(hdev);
1303         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1304                 hdev->hiddev_disconnect(hdev);
1305         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1306                 hidraw_disconnect(hdev);
1307 }
1308 EXPORT_SYMBOL_GPL(hid_disconnect);
1309
1310 /* a list of devices for which there is a specialized driver on HID bus */
1311 static const struct hid_device_id hid_have_special_driver[] = {
1312         { HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M1968) },
1313         { HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M2256) },
1314         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1315         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1316         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1317         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1318         { HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR, USB_DEVICE_ID_ACTIONSTAR_1011) },
1319         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) },
1320         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1321         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1322         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1323         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1324         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1325         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1326         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1327         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1328         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1329         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1330         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1331         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1332         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1333         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1334         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1335         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1336         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1337         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1338         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1339         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1340         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1341         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1342         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1343         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1344         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1345         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1346         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1347         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1348         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1349         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1350         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1351         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1352         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1353         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1354         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1355         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1356         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1357         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1358         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1359         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1360         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1361         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1362         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1363         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1364         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1365         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1366         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1367         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1368         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1369         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1370         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1371         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1372         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1373         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1374         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1375         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1376         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1377         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1378         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1379         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1380         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1381         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1382         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1383         { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_T91MT) },
1384         { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1385         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1386         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1387         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1388         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1389         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1390         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
1391         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
1392         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1393         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1394         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1395         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1396         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1397         { HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1398         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1399         { HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, USB_DEVICE_ID_CVTOUCH_SCREEN) },
1400         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1401         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1402         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1403         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1404         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
1405         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1406         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1407         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1408         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1409         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1410         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1411         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1412         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1413         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1414         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1415         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2515) },
1416         { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1417         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1418         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1419         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1420         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1421         { HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, USB_DEVICE_ID_GOODTOUCH_000f) },
1422         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1423         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1424         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1425         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1426         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1427         { HID_USB_DEVICE(USB_VENDOR_ID_HANVON, USB_DEVICE_ID_HANVON_MULTITOUCH) },
1428         { HID_USB_DEVICE(USB_VENDOR_ID_IDEACOM, USB_DEVICE_ID_IDEACOM_IDC6650) },
1429         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1430         { HID_USB_DEVICE(USB_VENDOR_ID_ILITEK, USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1431         { HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS, USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
1432         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1433         { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1434         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1435         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1436         { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1437         { HID_USB_DEVICE(USB_VENDOR_ID_LG, USB_DEVICE_ID_LG_MULTITOUCH) },
1438         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1439         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1440         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1441         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1442         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1443         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1444         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1445         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1446         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1447         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1448         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1449         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1450         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1451         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1452         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1453         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1454         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1455         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1456         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1457         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1458         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1459         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1460         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1461         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1462         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1463         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1464         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1465         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1466         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1467         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1468         { HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, USB_DEVICE_ID_CRYSTALTOUCH) },
1469         { HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
1470         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1471         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1472         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1473         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1474         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1475         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1476         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1477         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1478         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1479         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1480         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1481         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1482         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1483         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1484         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1485         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1486         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1487         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1488         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1489         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1490         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1491         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1492         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1493         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1494         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1495         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1496         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1497         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1498         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1499         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1500         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1501         { HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_PCI) },
1502         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1503         { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1504         { HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1505         { HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_PIXART_IMAGING_INC_OPTICAL_TOUCH_SCREEN) },
1506         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1507         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1508         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1509         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1510         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1511         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1512         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1513         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1514         { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1515         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1516         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1517         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1518         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1519         { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, USB_DEVICE_ID_MTP) },
1520         { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, USB_DEVICE_ID_MTP_STM) },
1521         { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX, USB_DEVICE_ID_MTP_SITRONIX) },
1522         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1523         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1524         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1525         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1526         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1527         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1528         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1529         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1530         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1531         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1532         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1533         { HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1534         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1535         { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1536         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1537         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1538         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1539         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1540         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1541         { HID_USB_DEVICE(USB_VENDOR_ID_UNITEC, USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1542         { HID_USB_DEVICE(USB_VENDOR_ID_UNITEC, USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1543         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1544         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1545         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1546         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1547         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1548         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1549         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1550         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1551         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1552         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1553         { HID_USB_DEVICE(USB_VENDOR_ID_XAT, USB_DEVICE_ID_XAT_CSR) },
1554         { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1555         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1556         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1557         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1558
1559         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1560         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1561         { }
1562 };
1563
1564 struct hid_dynid {
1565         struct list_head list;
1566         struct hid_device_id id;
1567 };
1568
1569 /**
1570  * store_new_id - add a new HID device ID to this driver and re-probe devices
1571  * @driver: target device driver
1572  * @buf: buffer for scanning device ID data
1573  * @count: input size
1574  *
1575  * Adds a new dynamic hid device ID to this driver,
1576  * and causes the driver to probe for all devices again.
1577  */
1578 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1579                 size_t count)
1580 {
1581         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1582         struct hid_dynid *dynid;
1583         __u32 bus, vendor, product;
1584         unsigned long driver_data = 0;
1585         int ret;
1586
1587         ret = sscanf(buf, "%x %x %x %lx",
1588                         &bus, &vendor, &product, &driver_data);
1589         if (ret < 3)
1590                 return -EINVAL;
1591
1592         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1593         if (!dynid)
1594                 return -ENOMEM;
1595
1596         dynid->id.bus = bus;
1597         dynid->id.vendor = vendor;
1598         dynid->id.product = product;
1599         dynid->id.driver_data = driver_data;
1600
1601         spin_lock(&hdrv->dyn_lock);
1602         list_add_tail(&dynid->list, &hdrv->dyn_list);
1603         spin_unlock(&hdrv->dyn_lock);
1604
1605         ret = 0;
1606         if (get_driver(&hdrv->driver)) {
1607                 ret = driver_attach(&hdrv->driver);
1608                 put_driver(&hdrv->driver);
1609         }
1610
1611         return ret ? : count;
1612 }
1613 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1614
1615 static void hid_free_dynids(struct hid_driver *hdrv)
1616 {
1617         struct hid_dynid *dynid, *n;
1618
1619         spin_lock(&hdrv->dyn_lock);
1620         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1621                 list_del(&dynid->list);
1622                 kfree(dynid);
1623         }
1624         spin_unlock(&hdrv->dyn_lock);
1625 }
1626
1627 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1628                 struct hid_driver *hdrv)
1629 {
1630         struct hid_dynid *dynid;
1631
1632         spin_lock(&hdrv->dyn_lock);
1633         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1634                 if (hid_match_one_id(hdev, &dynid->id)) {
1635                         spin_unlock(&hdrv->dyn_lock);
1636                         return &dynid->id;
1637                 }
1638         }
1639         spin_unlock(&hdrv->dyn_lock);
1640
1641         return hid_match_id(hdev, hdrv->id_table);
1642 }
1643
1644 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1645 {
1646         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1647         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1648
1649         if (!hid_match_device(hdev, hdrv))
1650                 return 0;
1651
1652         /* generic wants all that don't have specialized driver */
1653         if (!strncmp(hdrv->name, "generic-", 8))
1654                 return !hid_match_id(hdev, hid_have_special_driver);
1655
1656         return 1;
1657 }
1658
1659 static int hid_device_probe(struct device *dev)
1660 {
1661         struct hid_driver *hdrv = container_of(dev->driver,
1662                         struct hid_driver, driver);
1663         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1664         const struct hid_device_id *id;
1665         int ret = 0;
1666
1667         if (down_interruptible(&hdev->driver_lock))
1668                 return -EINTR;
1669
1670         if (!hdev->driver) {
1671                 id = hid_match_device(hdev, hdrv);
1672                 if (id == NULL) {
1673                         ret = -ENODEV;
1674                         goto unlock;
1675                 }
1676
1677                 hdev->driver = hdrv;
1678                 if (hdrv->probe) {
1679                         ret = hdrv->probe(hdev, id);
1680                 } else { /* default probe */
1681                         ret = hid_parse(hdev);
1682                         if (!ret)
1683                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1684                 }
1685                 if (ret)
1686                         hdev->driver = NULL;
1687         }
1688 unlock:
1689         up(&hdev->driver_lock);
1690         return ret;
1691 }
1692
1693 static int hid_device_remove(struct device *dev)
1694 {
1695         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1696         struct hid_driver *hdrv;
1697
1698         if (down_interruptible(&hdev->driver_lock))
1699                 return -EINTR;
1700
1701         hdrv = hdev->driver;
1702         if (hdrv) {
1703                 if (hdrv->remove)
1704                         hdrv->remove(hdev);
1705                 else /* default remove */
1706                         hid_hw_stop(hdev);
1707                 hdev->driver = NULL;
1708         }
1709
1710         up(&hdev->driver_lock);
1711         return 0;
1712 }
1713
1714 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1715 {
1716         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1717
1718         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
1719                         hdev->bus, hdev->vendor, hdev->product))
1720                 return -ENOMEM;
1721
1722         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
1723                 return -ENOMEM;
1724
1725         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
1726                 return -ENOMEM;
1727
1728         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
1729                 return -ENOMEM;
1730
1731         if (add_uevent_var(env, "MODALIAS=hid:b%04Xv%08Xp%08X",
1732                         hdev->bus, hdev->vendor, hdev->product))
1733                 return -ENOMEM;
1734
1735         return 0;
1736 }
1737
1738 static struct bus_type hid_bus_type = {
1739         .name           = "hid",
1740         .match          = hid_bus_match,
1741         .probe          = hid_device_probe,
1742         .remove         = hid_device_remove,
1743         .uevent         = hid_uevent,
1744 };
1745
1746 /* a list of devices that shouldn't be handled by HID core at all */
1747 static const struct hid_device_id hid_ignore_list[] = {
1748         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
1749         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
1750         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
1751         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
1752         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
1753         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
1754         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
1755         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
1756         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
1757         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
1758         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
1759         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
1760         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
1761         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
1762         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
1763         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
1764         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
1765         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
1766         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
1767         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
1768         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
1769         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
1770         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
1771         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
1772         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
1773         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
1774         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
1775         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
1776         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
1777         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
1778         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
1779         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
1780         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
1781         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
1782         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
1783         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
1784         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
1785         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
1786         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
1787         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
1788         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
1789         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
1790         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
1791         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
1792         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
1793         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
1794         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
1795         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
1796         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
1797         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
1798         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
1799         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
1800         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
1801         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
1802         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
1803         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
1804         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
1805         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
1806         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
1807         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
1808         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
1809         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
1810         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
1811         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
1812         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
1813         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
1814         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
1815         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
1816         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
1817         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
1818         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
1819         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
1820         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
1821         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
1822         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
1823         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
1824         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
1825         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
1826         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
1827         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
1828         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
1829         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
1830         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
1831         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
1832         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
1833         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
1834         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
1835         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
1836         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
1837         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
1838         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
1839         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
1840         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
1841         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
1842         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
1843         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
1844         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
1845         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
1846         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
1847         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
1848         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
1849         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
1850         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
1851         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
1852         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
1853         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
1854         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
1855         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
1856         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
1857         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
1858         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
1859         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
1860         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
1861         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
1862         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
1863         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
1864         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
1865         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
1866         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
1867         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
1868         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
1869         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
1870         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
1871         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
1872         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
1873         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
1874         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
1875         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
1876         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
1877         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
1878         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
1879         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
1880         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
1881         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
1882         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
1883         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
1884         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
1885         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
1886         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
1887         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
1888         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
1889         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
1890         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
1891         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
1892         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
1893         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
1894         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
1895         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
1896         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
1897         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
1898         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
1899         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
1900         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
1901         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
1902         { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
1903         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
1904         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
1905         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
1906         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
1907         { }
1908 };
1909
1910 /**
1911  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
1912  *
1913  * There are composite devices for which we want to ignore only a certain
1914  * interface. This is a list of devices for which only the mouse interface will
1915  * be ignored. This allows a dedicated driver to take care of the interface.
1916  */
1917 static const struct hid_device_id hid_mouse_ignore_list[] = {
1918         /* appletouch driver */
1919         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1920         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1921         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1922         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1923         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1924         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1925         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1926         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1927         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1928         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1929         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1930         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1931         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1932         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1933         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1934         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1935         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1936         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1937         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1938         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1939         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1940         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1941         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1942         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1943         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1944         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1945         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1946         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1947         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1948         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1949         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1950         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1951         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1952         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1953         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1954         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1955         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1956         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1957         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1958         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1959         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1960         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1961         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1962         { }
1963 };
1964
1965 static bool hid_ignore(struct hid_device *hdev)
1966 {
1967         switch (hdev->vendor) {
1968         case USB_VENDOR_ID_CODEMERCS:
1969                 /* ignore all Code Mercenaries IOWarrior devices */
1970                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
1971                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
1972                         return true;
1973                 break;
1974         case USB_VENDOR_ID_LOGITECH:
1975                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
1976                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
1977                         return true;
1978                 break;
1979         case USB_VENDOR_ID_SOUNDGRAPH:
1980                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
1981                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
1982                         return true;
1983                 break;
1984         case USB_VENDOR_ID_HANWANG:
1985                 if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
1986                     hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
1987                         return true;
1988                 break;
1989         case USB_VENDOR_ID_JESS:
1990                 if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
1991                                 hdev->type == HID_TYPE_USBNONE)
1992                         return true;
1993         break;
1994         }
1995
1996         if (hdev->type == HID_TYPE_USBMOUSE &&
1997                         hid_match_id(hdev, hid_mouse_ignore_list))
1998                 return true;
1999
2000         return !!hid_match_id(hdev, hid_ignore_list);
2001 }
2002
2003 int hid_add_device(struct hid_device *hdev)
2004 {
2005         static atomic_t id = ATOMIC_INIT(0);
2006         int ret;
2007
2008         if (WARN_ON(hdev->status & HID_STAT_ADDED))
2009                 return -EBUSY;
2010
2011         /* we need to kill them here, otherwise they will stay allocated to
2012          * wait for coming driver */
2013         if (!(hdev->quirks & HID_QUIRK_NO_IGNORE)
2014             && (hid_ignore(hdev) || (hdev->quirks & HID_QUIRK_IGNORE)))
2015                 return -ENODEV;
2016
2017         /* XXX hack, any other cleaner solution after the driver core
2018          * is converted to allow more than 20 bytes as the device name? */
2019         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2020                      hdev->vendor, hdev->product, atomic_inc_return(&id));
2021
2022         hid_debug_register(hdev, dev_name(&hdev->dev));
2023         ret = device_add(&hdev->dev);
2024         if (!ret)
2025                 hdev->status |= HID_STAT_ADDED;
2026         else
2027                 hid_debug_unregister(hdev);
2028
2029         return ret;
2030 }
2031 EXPORT_SYMBOL_GPL(hid_add_device);
2032
2033 /**
2034  * hid_allocate_device - allocate new hid device descriptor
2035  *
2036  * Allocate and initialize hid device, so that hid_destroy_device might be
2037  * used to free it.
2038  *
2039  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2040  * error value.
2041  */
2042 struct hid_device *hid_allocate_device(void)
2043 {
2044         struct hid_device *hdev;
2045         unsigned int i;
2046         int ret = -ENOMEM;
2047
2048         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2049         if (hdev == NULL)
2050                 return ERR_PTR(ret);
2051
2052         device_initialize(&hdev->dev);
2053         hdev->dev.release = hid_device_release;
2054         hdev->dev.bus = &hid_bus_type;
2055
2056         hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
2057                         sizeof(struct hid_collection), GFP_KERNEL);
2058         if (hdev->collection == NULL)
2059                 goto err;
2060         hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
2061
2062         for (i = 0; i < HID_REPORT_TYPES; i++)
2063                 INIT_LIST_HEAD(&hdev->report_enum[i].report_list);
2064
2065         init_waitqueue_head(&hdev->debug_wait);
2066         INIT_LIST_HEAD(&hdev->debug_list);
2067         sema_init(&hdev->driver_lock, 1);
2068
2069         return hdev;
2070 err:
2071         put_device(&hdev->dev);
2072         return ERR_PTR(ret);
2073 }
2074 EXPORT_SYMBOL_GPL(hid_allocate_device);
2075
2076 static void hid_remove_device(struct hid_device *hdev)
2077 {
2078         if (hdev->status & HID_STAT_ADDED) {
2079                 device_del(&hdev->dev);
2080                 hid_debug_unregister(hdev);
2081                 hdev->status &= ~HID_STAT_ADDED;
2082         }
2083 }
2084
2085 /**
2086  * hid_destroy_device - free previously allocated device
2087  *
2088  * @hdev: hid device
2089  *
2090  * If you allocate hid_device through hid_allocate_device, you should ever
2091  * free by this function.
2092  */
2093 void hid_destroy_device(struct hid_device *hdev)
2094 {
2095         hid_remove_device(hdev);
2096         put_device(&hdev->dev);
2097 }
2098 EXPORT_SYMBOL_GPL(hid_destroy_device);
2099
2100 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2101                 const char *mod_name)
2102 {
2103         int ret;
2104
2105         hdrv->driver.name = hdrv->name;
2106         hdrv->driver.bus = &hid_bus_type;
2107         hdrv->driver.owner = owner;
2108         hdrv->driver.mod_name = mod_name;
2109
2110         INIT_LIST_HEAD(&hdrv->dyn_list);
2111         spin_lock_init(&hdrv->dyn_lock);
2112
2113         ret = driver_register(&hdrv->driver);
2114         if (ret)
2115                 return ret;
2116
2117         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2118         if (ret)
2119                 driver_unregister(&hdrv->driver);
2120
2121         return ret;
2122 }
2123 EXPORT_SYMBOL_GPL(__hid_register_driver);
2124
2125 void hid_unregister_driver(struct hid_driver *hdrv)
2126 {
2127         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2128         driver_unregister(&hdrv->driver);
2129         hid_free_dynids(hdrv);
2130 }
2131 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2132
2133 int hid_check_keys_pressed(struct hid_device *hid)
2134 {
2135         struct hid_input *hidinput;
2136         int i;
2137
2138         if (!(hid->claimed & HID_CLAIMED_INPUT))
2139                 return 0;
2140
2141         list_for_each_entry(hidinput, &hid->inputs, list) {
2142                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2143                         if (hidinput->input->key[i])
2144                                 return 1;
2145         }
2146
2147         return 0;
2148 }
2149
2150 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2151
2152 static int __init hid_init(void)
2153 {
2154         int ret;
2155
2156         if (hid_debug)
2157                 pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2158                         "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2159
2160         ret = bus_register(&hid_bus_type);
2161         if (ret) {
2162                 pr_err("can't register hid bus\n");
2163                 goto err;
2164         }
2165
2166         ret = hidraw_init();
2167         if (ret)
2168                 goto err_bus;
2169
2170         hid_debug_init();
2171
2172         return 0;
2173 err_bus:
2174         bus_unregister(&hid_bus_type);
2175 err:
2176         return ret;
2177 }
2178
2179 static void __exit hid_exit(void)
2180 {
2181         hid_debug_exit();
2182         hidraw_exit();
2183         bus_unregister(&hid_bus_type);
2184 }
2185
2186 module_init(hid_init);
2187 module_exit(hid_exit);
2188
2189 MODULE_AUTHOR("Andreas Gal");
2190 MODULE_AUTHOR("Vojtech Pavlik");
2191 MODULE_AUTHOR("Jiri Kosina");
2192 MODULE_LICENSE(DRIVER_LICENSE);
2193