drivers/hid/hid-core.c

   1 /*
   2  *  HID support for Linux
   3  *
   4  *  Copyright (c) 1999 Andreas Gal
   5  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
   6  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
   7  *  Copyright (c) 2006-2012 Jiri Kosina
   8  */
   9
  10 /*
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the Free
  13  * Software Foundation; either version 2 of the License, or (at your option)
  14  * any later version.
  15  */
  16
  17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  18
  19 #include <linux/module.h>
  20 #include <linux/slab.h>
  21 #include <linux/init.h>
  22 #include <linux/kernel.h>
  23 #include <linux/list.h>
  24 #include <linux/mm.h>
  25 #include <linux/spinlock.h>
  26 #include <asm/unaligned.h>
  27 #include <asm/byteorder.h>
  28 #include <linux/input.h>
  29 #include <linux/wait.h>
  30 #include <linux/vmalloc.h>
  31 #include <linux/sched.h>
  32 #include <linux/semaphore.h>
  33
  34 #include <linux/hid.h>
  35 #include <linux/hiddev.h>
  36 #include <linux/hid-debug.h>
  37 #include <linux/hidraw.h>
  38
  39 #include "hid-ids.h"
  40
  41 /*
  42  * Version Information
  43  */
  44
  45 #define DRIVER_DESC "HID core driver"
  46 #define DRIVER_LICENSE "GPL"
  47
  48 int hid_debug = 0;
  49 module_param_named(debug, hid_debug, int, 0600);
  50 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
  51 EXPORT_SYMBOL_GPL(hid_debug);
  52
  53 static int hid_ignore_special_drivers = 0;
  54 module_param_named(ignore_special_drivers, hid_ignore_special_drivers, int, 0600);
  55 MODULE_PARM_DESC(debug, "Ignore any special drivers and handle all devices by generic driver");
  56
  57 /*
  58  * Register a new report for a device.
  59  */
  60
  61 struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
  62 {
  63         struct hid_report_enum *report_enum = device->report_enum + type;
  64         struct hid_report *report;
  65
  66         if (report_enum->report_id_hash[id])
  67                 return report_enum->report_id_hash[id];
  68
  69         report = kzalloc(sizeof(struct hid_report), GFP_KERNEL);
  70         if (!report)
  71                 return NULL;
  72
  73         if (id != 0)
  74                 report_enum->numbered = 1;
  75
  76         report->id = id;
  77         report->type = type;
  78         report->size = 0;
  79         report->device = device;
  80         report_enum->report_id_hash[id] = report;
  81
  82         list_add_tail(&report->list, &report_enum->report_list);
  83
  84         return report;
  85 }
  86 EXPORT_SYMBOL_GPL(hid_register_report);
  87
  88 /*
  89  * Register a new field for this report.
  90  */
  91
  92 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
  93 {
  94         struct hid_field *field;
  95
  96         if (report->maxfield == HID_MAX_FIELDS) {
  97                 hid_err(report->device, "too many fields in report\n");
  98                 return NULL;
  99         }
 100
 101         field = kzalloc((sizeof(struct hid_field) +
 102                          usages * sizeof(struct hid_usage) +
 103                          values * sizeof(unsigned)), GFP_KERNEL);
 104         if (!field)
 105                 return NULL;
 106
 107         field->index = report->maxfield++;
 108         report->field[field->index] = field;
 109         field->usage = (struct hid_usage *)(field + 1);
 110         field->value = (s32 *)(field->usage + usages);
 111         field->report = report;
 112
 113         return field;
 114 }
 115
 116 /*
 117  * Open a collection. The type/usage is pushed on the stack.
 118  */
 119
 120 static int open_collection(struct hid_parser *parser, unsigned type)
 121 {
 122         struct hid_collection *collection;
 123         unsigned usage;
 124
 125         usage = parser->local.usage[0];
 126
 127         if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
 128                 hid_err(parser->device, "collection stack overflow\n");
 129                 return -1;
 130         }
 131
 132         if (parser->device->maxcollection == parser->device->collection_size) {
 133                 collection = kmalloc(sizeof(struct hid_collection) *
 134                                 parser->device->collection_size * 2, GFP_KERNEL);
 135                 if (collection == NULL) {
 136                         hid_err(parser->device, "failed to reallocate collection array\n");
 137                         return -1;
 138                 }
 139                 memcpy(collection, parser->device->collection,
 140                         sizeof(struct hid_collection) *
 141                         parser->device->collection_size);
 142                 memset(collection + parser->device->collection_size, 0,
 143                         sizeof(struct hid_collection) *
 144                         parser->device->collection_size);
 145                 kfree(parser->device->collection);
 146                 parser->device->collection = collection;
 147                 parser->device->collection_size *= 2;
 148         }
 149
 150         parser->collection_stack[parser->collection_stack_ptr++] =
 151                 parser->device->maxcollection;
 152
 153         collection = parser->device->collection +
 154                 parser->device->maxcollection++;
 155         collection->type = type;
 156         collection->usage = usage;
 157         collection->level = parser->collection_stack_ptr - 1;
 158
 159         if (type == HID_COLLECTION_APPLICATION)
 160                 parser->device->maxapplication++;
 161
 162         return 0;
 163 }
 164
 165 /*
 166  * Close a collection.
 167  */
 168
 169 static int close_collection(struct hid_parser *parser)
 170 {
 171         if (!parser->collection_stack_ptr) {
 172                 hid_err(parser->device, "collection stack underflow\n");
 173                 return -1;
 174         }
 175         parser->collection_stack_ptr--;
 176         return 0;
 177 }
 178
 179 /*
 180  * Climb up the stack, search for the specified collection type
 181  * and return the usage.
 182  */
 183
 184 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
 185 {
 186         struct hid_collection *collection = parser->device->collection;
 187         int n;
 188
 189         for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
 190                 unsigned index = parser->collection_stack[n];
 191                 if (collection[index].type == type)
 192                         return collection[index].usage;
 193         }
 194         return 0; /* we know nothing about this usage type */
 195 }
 196
 197 /*
 198  * Add a usage to the temporary parser table.
 199  */
 200
 201 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
 202 {
 203         if (parser->local.usage_index >= HID_MAX_USAGES) {
 204                 hid_err(parser->device, "usage index exceeded\n");
 205                 return -1;
 206         }
 207         parser->local.usage[parser->local.usage_index] = usage;
 208         parser->local.collection_index[parser->local.usage_index] =
 209                 parser->collection_stack_ptr ?
 210                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
 211         parser->local.usage_index++;
 212         return 0;
 213 }
 214
 215 /*
 216  * Register a new field for this report.
 217  */
 218
 219 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
 220 {
 221         struct hid_report *report;
 222         struct hid_field *field;
 223         int usages;
 224         unsigned offset;
 225         int i;
 226
 227         report = hid_register_report(parser->device, report_type, parser->global.report_id);
 228         if (!report) {
 229                 hid_err(parser->device, "hid_register_report failed\n");
 230                 return -1;
 231         }
 232
 233         if (parser->global.logical_maximum < parser->global.logical_minimum) {
 234                 hid_err(parser->device, "logical range invalid %d %d\n",
 235                                 parser->global.logical_minimum, parser->global.logical_maximum);
 236                 return -1;
 237         }
 238
 239         offset = report->size;
 240         report->size += parser->global.report_size * parser->global.report_count;
 241
 242         if (!parser->local.usage_index) /* Ignore padding fields */
 243                 return 0;
 244
 245         usages = max_t(int, parser->local.usage_index, parser->global.report_count);
 246
 247         field = hid_register_field(report, usages, parser->global.report_count);
 248         if (!field)
 249                 return 0;
 250
 251         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
 252         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
 253         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
 254
 255         for (i = 0; i < usages; i++) {
 256                 int j = i;
 257                 /* Duplicate the last usage we parsed if we have excess values */
 258                 if (i >= parser->local.usage_index)
 259                         j = parser->local.usage_index - 1;
 260                 field->usage[i].hid = parser->local.usage[j];
 261                 field->usage[i].collection_index =
 262                         parser->local.collection_index[j];
 263         }
 264
 265         field->maxusage = usages;
 266         field->flags = flags;
 267         field->report_offset = offset;
 268         field->report_type = report_type;
 269         field->report_size = parser->global.report_size;
 270         field->report_count = parser->global.report_count;
 271         field->logical_minimum = parser->global.logical_minimum;
 272         field->logical_maximum = parser->global.logical_maximum;
 273         field->physical_minimum = parser->global.physical_minimum;
 274         field->physical_maximum = parser->global.physical_maximum;
 275         field->unit_exponent = parser->global.unit_exponent;
 276         field->unit = parser->global.unit;
 277
 278         return 0;
 279 }
 280
 281 /*
 282  * Read data value from item.
 283  */
 284
 285 static u32 item_udata(struct hid_item *item)
 286 {
 287         switch (item->size) {
 288         case 1: return item->data.u8;
 289         case 2: return item->data.u16;
 290         case 4: return item->data.u32;
 291         }
 292         return 0;
 293 }
 294
 295 static s32 item_sdata(struct hid_item *item)
 296 {
 297         switch (item->size) {
 298         case 1: return item->data.s8;
 299         case 2: return item->data.s16;
 300         case 4: return item->data.s32;
 301         }
 302         return 0;
 303 }
 304
 305 /*
 306  * Process a global item.
 307  */
 308
 309 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
 310 {
 311         switch (item->tag) {
 312         case HID_GLOBAL_ITEM_TAG_PUSH:
 313
 314                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
 315                         hid_err(parser->device, "global environment stack overflow\n");
 316                         return -1;
 317                 }
 318
 319                 memcpy(parser->global_stack + parser->global_stack_ptr++,
 320                         &parser->global, sizeof(struct hid_global));
 321                 return 0;
 322
 323         case HID_GLOBAL_ITEM_TAG_POP:
 324
 325                 if (!parser->global_stack_ptr) {
 326                         hid_err(parser->device, "global environment stack underflow\n");
 327                         return -1;
 328                 }
 329
 330                 memcpy(&parser->global, parser->global_stack +
 331                         --parser->global_stack_ptr, sizeof(struct hid_global));
 332                 return 0;
 333
 334         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
 335                 parser->global.usage_page = item_udata(item);
 336                 return 0;
 337
 338         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
 339                 parser->global.logical_minimum = item_sdata(item);
 340                 return 0;
 341
 342         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
 343                 if (parser->global.logical_minimum < 0)
 344                         parser->global.logical_maximum = item_sdata(item);
 345                 else
 346                         parser->global.logical_maximum = item_udata(item);
 347                 return 0;
 348
 349         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
 350                 parser->global.physical_minimum = item_sdata(item);
 351                 return 0;
 352
 353         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
 354                 if (parser->global.physical_minimum < 0)
 355                         parser->global.physical_maximum = item_sdata(item);
 356                 else
 357                         parser->global.physical_maximum = item_udata(item);
 358                 return 0;
 359
 360         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
 361                 parser->global.unit_exponent = item_sdata(item);
 362                 return 0;
 363
 364         case HID_GLOBAL_ITEM_TAG_UNIT:
 365                 parser->global.unit = item_udata(item);
 366                 return 0;
 367
 368         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
 369                 parser->global.report_size = item_udata(item);
 370                 if (parser->global.report_size > 96) {
 371                         hid_err(parser->device, "invalid report_size %d\n",
 372                                         parser->global.report_size);
 373                         return -1;
 374                 }
 375                 return 0;
 376
 377         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
 378                 parser->global.report_count = item_udata(item);
 379                 if (parser->global.report_count > HID_MAX_USAGES) {
 380                         hid_err(parser->device, "invalid report_count %d\n",
 381                                         parser->global.report_count);
 382                         return -1;
 383                 }
 384                 return 0;
 385
 386         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
 387                 parser->global.report_id = item_udata(item);
 388                 if (parser->global.report_id == 0) {
 389                         hid_err(parser->device, "report_id 0 is invalid\n");
 390                         return -1;
 391                 }
 392                 return 0;
 393
 394         default:
 395                 hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
 396                 return -1;
 397         }
 398 }
 399
 400 /*
 401  * Process a local item.
 402  */
 403
 404 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 405 {
 406         __u32 data;
 407         unsigned n;
 408
 409         data = item_udata(item);
 410
 411         switch (item->tag) {
 412         case HID_LOCAL_ITEM_TAG_DELIMITER:
 413
 414                 if (data) {
 415                         /*
 416                          * We treat items before the first delimiter
 417                          * as global to all usage sets (branch 0).
 418                          * In the moment we process only these global
 419                          * items and the first delimiter set.
 420                          */
 421                         if (parser->local.delimiter_depth != 0) {
 422                                 hid_err(parser->device, "nested delimiters\n");
 423                                 return -1;
 424                         }
 425                         parser->local.delimiter_depth++;
 426                         parser->local.delimiter_branch++;
 427                 } else {
 428                         if (parser->local.delimiter_depth < 1) {
 429                                 hid_err(parser->device, "bogus close delimiter\n");
 430                                 return -1;
 431                         }
 432                         parser->local.delimiter_depth--;
 433                 }
 434                 return 1;
 435
 436         case HID_LOCAL_ITEM_TAG_USAGE:
 437
 438                 if (parser->local.delimiter_branch > 1) {
 439                         dbg_hid("alternative usage ignored\n");
 440                         return 0;
 441                 }
 442
 443                 if (item->size <= 2)
 444                         data = (parser->global.usage_page << 16) + data;
 445
 446                 return hid_add_usage(parser, data);
 447
 448         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 449
 450                 if (parser->local.delimiter_branch > 1) {
 451                         dbg_hid("alternative usage ignored\n");
 452                         return 0;
 453                 }
 454
 455                 if (item->size <= 2)
 456                         data = (parser->global.usage_page << 16) + data;
 457
 458                 parser->local.usage_minimum = data;
 459                 return 0;
 460
 461         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 462
 463                 if (parser->local.delimiter_branch > 1) {
 464                         dbg_hid("alternative usage ignored\n");
 465                         return 0;
 466                 }
 467
 468                 if (item->size <= 2)
 469                         data = (parser->global.usage_page << 16) + data;
 470
 471                 for (n = parser->local.usage_minimum; n <= data; n++)
 472                         if (hid_add_usage(parser, n)) {
 473                                 dbg_hid("hid_add_usage failed\n");
 474                                 return -1;
 475                         }
 476                 return 0;
 477
 478         default:
 479
 480                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
 481                 return 0;
 482         }
 483         return 0;
 484 }
 485
 486 /*
 487  * Process a main item.
 488  */
 489
 490 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
 491 {
 492         __u32 data;
 493         int ret;
 494
 495         data = item_udata(item);
 496
 497         switch (item->tag) {
 498         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 499                 ret = open_collection(parser, data & 0xff);
 500                 break;
 501         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 502                 ret = close_collection(parser);
 503                 break;
 504         case HID_MAIN_ITEM_TAG_INPUT:
 505                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
 506                 break;
 507         case HID_MAIN_ITEM_TAG_OUTPUT:
 508                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
 509                 break;
 510         case HID_MAIN_ITEM_TAG_FEATURE:
 511                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
 512                 break;
 513         default:
 514                 hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
 515                 ret = 0;
 516         }
 517
 518         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
 519
 520         return ret;
 521 }
 522
 523 /*
 524  * Process a reserved item.
 525  */
 526
 527 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
 528 {
 529         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
 530         return 0;
 531 }
 532
 533 /*
 534  * Free a report and all registered fields. The field->usage and
 535  * field->value table's are allocated behind the field, so we need
 536  * only to free(field) itself.
 537  */
 538
 539 static void hid_free_report(struct hid_report *report)
 540 {
 541         unsigned n;
 542
 543         for (n = 0; n < report->maxfield; n++)
 544                 kfree(report->field[n]);
 545         kfree(report);
 546 }
 547
 548 /*
 549  * Close report. This function returns the device
 550  * state to the point prior to hid_open_report().
 551  */
 552 static void hid_close_report(struct hid_device *device)
 553 {
 554         unsigned i, j;
 555
 556         for (i = 0; i < HID_REPORT_TYPES; i++) {
 557                 struct hid_report_enum *report_enum = device->report_enum + i;
 558
 559                 for (j = 0; j < 256; j++) {
 560                         struct hid_report *report = report_enum->report_id_hash[j];
 561                         if (report)
 562                                 hid_free_report(report);
 563                 }
 564                 memset(report_enum, 0, sizeof(*report_enum));
 565                 INIT_LIST_HEAD(&report_enum->report_list);
 566         }
 567
 568         kfree(device->rdesc);
 569         device->rdesc = NULL;
 570         device->rsize = 0;
 571
 572         kfree(device->collection);
 573         device->collection = NULL;
 574         device->collection_size = 0;
 575         device->maxcollection = 0;
 576         device->maxapplication = 0;
 577
 578         device->status &= ~HID_STAT_PARSED;
 579 }
 580
 581 /*
 582  * Free a device structure, all reports, and all fields.
 583  */
 584
 585 static void hid_device_release(struct device *dev)
 586 {
 587         struct hid_device *hid = container_of(dev, struct hid_device, dev);
 588
 589         hid_close_report(hid);
 590         kfree(hid->dev_rdesc);
 591         kfree(hid);
 592 }
 593
 594 /*
 595  * Fetch a report description item from the data stream. We support long
 596  * items, though they are not used yet.
 597  */
 598
 599 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
 600 {
 601         u8 b;
 602
 603         if ((end - start) <= 0)
 604                 return NULL;
 605
 606         b = *start++;
 607
 608         item->type = (b >> 2) & 3;
 609         item->tag  = (b >> 4) & 15;
 610
 611         if (item->tag == HID_ITEM_TAG_LONG) {
 612
 613                 item->format = HID_ITEM_FORMAT_LONG;
 614
 615                 if ((end - start) < 2)
 616                         return NULL;
 617
 618                 item->size = *start++;
 619                 item->tag  = *start++;
 620
 621                 if ((end - start) < item->size)
 622                         return NULL;
 623
 624                 item->data.longdata = start;
 625                 start += item->size;
 626                 return start;
 627         }
 628
 629         item->format = HID_ITEM_FORMAT_SHORT;
 630         item->size = b & 3;
 631
 632         switch (item->size) {
 633         case 0:
 634                 return start;
 635
 636         case 1:
 637                 if ((end - start) < 1)
 638                         return NULL;
 639                 item->data.u8 = *start++;
 640                 return start;
 641
 642         case 2:
 643                 if ((end - start) < 2)
 644                         return NULL;
 645                 item->data.u16 = get_unaligned_le16(start);
 646                 start = (__u8 *)((__le16 *)start + 1);
 647                 return start;
 648
 649         case 3:
 650                 item->size++;
 651                 if ((end - start) < 4)
 652                         return NULL;
 653                 item->data.u32 = get_unaligned_le32(start);
 654                 start = (__u8 *)((__le32 *)start + 1);
 655                 return start;
 656         }
 657
 658         return NULL;
 659 }
 660
 661 static void hid_scan_usage(struct hid_device *hid, u32 usage)
 662 {
 663 }
 664
 665 /*
 666  * Scan a report descriptor before the device is added to the bus.
 667  * Sets device groups and other properties that determine what driver
 668  * to load.
 669  */
 670 static int hid_scan_report(struct hid_device *hid)
 671 {
 672         unsigned int page = 0, delim = 0;
 673         __u8 *start = hid->dev_rdesc;
 674         __u8 *end = start + hid->dev_rsize;
 675         unsigned int u, u_min = 0, u_max = 0;
 676         struct hid_item item;
 677
 678         hid->group = HID_GROUP_GENERIC;
 679         while ((start = fetch_item(start, end, &item)) != NULL) {
 680                 if (item.format != HID_ITEM_FORMAT_SHORT)
 681                         return -EINVAL;
 682                 if (item.type == HID_ITEM_TYPE_GLOBAL) {
 683                         if (item.tag == HID_GLOBAL_ITEM_TAG_USAGE_PAGE)
 684                                 page = item_udata(&item) << 16;
 685                 } else if (item.type == HID_ITEM_TYPE_LOCAL) {
 686                         if (delim > 1)
 687                                 break;
 688                         u = item_udata(&item);
 689                         if (item.size <= 2)
 690                                 u += page;
 691                         switch (item.tag) {
 692                         case HID_LOCAL_ITEM_TAG_DELIMITER:
 693                                 delim += !!u;
 694                                 break;
 695                         case HID_LOCAL_ITEM_TAG_USAGE:
 696                                 hid_scan_usage(hid, u);
 697                                 break;
 698                         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 699                                 u_min = u;
 700                                 break;
 701                         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 702                                 u_max = u;
 703                                 for (u = u_min; u <= u_max; u++)
 704                                         hid_scan_usage(hid, u);
 705                                 break;
 706                         }
 707                 }
 708         }
 709
 710         return 0;
 711 }
 712
 713 /**
 714  * hid_parse_report - parse device report
 715  *
 716  * @device: hid device
 717  * @start: report start
 718  * @size: report size
 719  *
 720  * Allocate the device report as read by the bus driver. This function should
 721  * only be called from parse() in ll drivers.
 722  */
 723 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
 724 {
 725         hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
 726         if (!hid->dev_rdesc)
 727                 return -ENOMEM;
 728         hid->dev_rsize = size;
 729         return 0;
 730 }
 731 EXPORT_SYMBOL_GPL(hid_parse_report);
 732
 733 /**
 734  * hid_open_report - open a driver-specific device report
 735  *
 736  * @device: hid device
 737  *
 738  * Parse a report description into a hid_device structure. Reports are
 739  * enumerated, fields are attached to these reports.
 740  * 0 returned on success, otherwise nonzero error value.
 741  *
 742  * This function (or the equivalent hid_parse() macro) should only be
 743  * called from probe() in drivers, before starting the device.
 744  */
 745 int hid_open_report(struct hid_device *device)
 746 {
 747         struct hid_parser *parser;
 748         struct hid_item item;
 749         unsigned int size;
 750         __u8 *start;
 751         __u8 *end;
 752         int ret;
 753         static int (*dispatch_type[])(struct hid_parser *parser,
 754                                       struct hid_item *item) = {
 755                 hid_parser_main,
 756                 hid_parser_global,
 757                 hid_parser_local,
 758                 hid_parser_reserved
 759         };
 760
 761         if (WARN_ON(device->status & HID_STAT_PARSED))
 762                 return -EBUSY;
 763
 764         start = device->dev_rdesc;
 765         if (WARN_ON(!start))
 766                 return -ENODEV;
 767         size = device->dev_rsize;
 768
 769         if (device->driver->report_fixup)
 770                 start = device->driver->report_fixup(device, start, &size);
 771
 772         device->rdesc = kmemdup(start, size, GFP_KERNEL);
 773         if (device->rdesc == NULL)
 774                 return -ENOMEM;
 775         device->rsize = size;
 776
 777         parser = vzalloc(sizeof(struct hid_parser));
 778         if (!parser) {
 779                 ret = -ENOMEM;
 780                 goto err;
 781         }
 782
 783         parser->device = device;
 784
 785         end = start + size;
 786
 787         device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
 788                                      sizeof(struct hid_collection), GFP_KERNEL);
 789         if (!device->collection) {
 790                 ret = -ENOMEM;
 791                 goto err;
 792         }
 793         device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
 794
 795         ret = -EINVAL;
 796         while ((start = fetch_item(start, end, &item)) != NULL) {
 797
 798                 if (item.format != HID_ITEM_FORMAT_SHORT) {
 799                         hid_err(device, "unexpected long global item\n");
 800                         goto err;
 801                 }
 802
 803                 if (dispatch_type[item.type](parser, &item)) {
 804                         hid_err(device, "item %u %u %u %u parsing failed\n",
 805                                 item.format, (unsigned)item.size,
 806                                 (unsigned)item.type, (unsigned)item.tag);
 807                         goto err;
 808                 }
 809
 810                 if (start == end) {
 811                         if (parser->collection_stack_ptr) {
 812                                 hid_err(device, "unbalanced collection at end of report description\n");
 813                                 goto err;
 814                         }
 815                         if (parser->local.delimiter_depth) {
 816                                 hid_err(device, "unbalanced delimiter at end of report description\n");
 817                                 goto err;
 818                         }
 819                         vfree(parser);
 820                         device->status |= HID_STAT_PARSED;
 821                         return 0;
 822                 }
 823         }
 824
 825         hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
 826 err:
 827         vfree(parser);
 828         hid_close_report(device);
 829         return ret;
 830 }
 831 EXPORT_SYMBOL_GPL(hid_open_report);
 832
 833 /*
 834  * Convert a signed n-bit integer to signed 32-bit integer. Common
 835  * cases are done through the compiler, the screwed things has to be
 836  * done by hand.
 837  */
 838
 839 static s32 snto32(__u32 value, unsigned n)
 840 {
 841         switch (n) {
 842         case 8:  return ((__s8)value);
 843         case 16: return ((__s16)value);
 844         case 32: return ((__s32)value);
 845         }
 846         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
 847 }
 848
 849 /*
 850  * Convert a signed 32-bit integer to a signed n-bit integer.
 851  */
 852
 853 static u32 s32ton(__s32 value, unsigned n)
 854 {
 855         s32 a = value >> (n - 1);
 856         if (a && a != -1)
 857                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
 858         return value & ((1 << n) - 1);
 859 }
 860
 861 /*
 862  * Extract/implement a data field from/to a little endian report (bit array).
 863  *
 864  * Code sort-of follows HID spec:
 865  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
 866  *
 867  * While the USB HID spec allows unlimited length bit fields in "report
 868  * descriptors", most devices never use more than 16 bits.
 869  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
 870  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
 871  */
 872
 873 static __u32 extract(const struct hid_device *hid, __u8 *report,
 874                      unsigned offset, unsigned n)
 875 {
 876         u64 x;
 877
 878         if (n > 32)
 879                 hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
 880                          n, current->comm);
 881
 882         report += offset >> 3;  /* adjust byte index */
 883         offset &= 7;            /* now only need bit offset into one byte */
 884         x = get_unaligned_le64(report);
 885         x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
 886         return (u32) x;
 887 }
 888
 889 /*
 890  * "implement" : set bits in a little endian bit stream.
 891  * Same concepts as "extract" (see comments above).
 892  * The data mangled in the bit stream remains in little endian
 893  * order the whole time. It make more sense to talk about
 894  * endianness of register values by considering a register
 895  * a "cached" copy of the little endiad bit stream.
 896  */
 897 static void implement(const struct hid_device *hid, __u8 *report,
 898                       unsigned offset, unsigned n, __u32 value)
 899 {
 900         u64 x;
 901         u64 m = (1ULL << n) - 1;
 902
 903         if (n > 32)
 904                 hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
 905                          __func__, n, current->comm);
 906
 907         if (value > m)
 908                 hid_warn(hid, "%s() called with too large value %d! (%s)\n",
 909                          __func__, value, current->comm);
 910         WARN_ON(value > m);
 911         value &= m;
 912
 913         report += offset >> 3;
 914         offset &= 7;
 915
 916         x = get_unaligned_le64(report);
 917         x &= ~(m << offset);
 918         x |= ((u64)value) << offset;
 919         put_unaligned_le64(x, report);
 920 }
 921
 922 /*
 923  * Search an array for a value.
 924  */
 925
 926 static int search(__s32 *array, __s32 value, unsigned n)
 927 {
 928         while (n--) {
 929                 if (*array++ == value)
 930                         return 0;
 931         }
 932         return -1;
 933 }
 934
 935 /**
 936  * hid_match_report - check if driver's raw_event should be called
 937  *
 938  * @hid: hid device
 939  * @report_type: type to match against
 940  *
 941  * compare hid->driver->report_table->report_type to report->type
 942  */
 943 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
 944 {
 945         const struct hid_report_id *id = hid->driver->report_table;
 946
 947         if (!id) /* NULL means all */
 948                 return 1;
 949
 950         for (; id->report_type != HID_TERMINATOR; id++)
 951                 if (id->report_type == HID_ANY_ID ||
 952                                 id->report_type == report->type)
 953                         return 1;
 954         return 0;
 955 }
 956
 957 /**
 958  * hid_match_usage - check if driver's event should be called
 959  *
 960  * @hid: hid device
 961  * @usage: usage to match against
 962  *
 963  * compare hid->driver->usage_table->usage_{type,code} to
 964  * usage->usage_{type,code}
 965  */
 966 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
 967 {
 968         const struct hid_usage_id *id = hid->driver->usage_table;
 969
 970         if (!id) /* NULL means all */
 971                 return 1;
 972
 973         for (; id->usage_type != HID_ANY_ID - 1; id++)
 974                 if ((id->usage_hid == HID_ANY_ID ||
 975                                 id->usage_hid == usage->hid) &&
 976                                 (id->usage_type == HID_ANY_ID ||
 977                                 id->usage_type == usage->type) &&
 978                                 (id->usage_code == HID_ANY_ID ||
 979                                  id->usage_code == usage->code))
 980                         return 1;
 981         return 0;
 982 }
 983
 984 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
 985                 struct hid_usage *usage, __s32 value, int interrupt)
 986 {
 987         struct hid_driver *hdrv = hid->driver;
 988         int ret;
 989
 990         hid_dump_input(hid, usage, value);
 991
 992         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
 993                 ret = hdrv->event(hid, field, usage, value);
 994                 if (ret != 0) {
 995                         if (ret < 0)
 996                                 hid_err(hid, "%s's event failed with %d\n",
 997                                                 hdrv->name, ret);
 998                         return;
 999                 }
1000         }
1001
1002         if (hid->claimed & HID_CLAIMED_INPUT)
1003                 hidinput_hid_event(hid, field, usage, value);
1004         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1005                 hid->hiddev_hid_event(hid, field, usage, value);
1006 }
1007
1008 /*
1009  * Analyse a received field, and fetch the data from it. The field
1010  * content is stored for next report processing (we do differential
1011  * reporting to the layer).
1012  */
1013
1014 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1015                             __u8 *data, int interrupt)
1016 {
1017         unsigned n;
1018         unsigned count = field->report_count;
1019         unsigned offset = field->report_offset;
1020         unsigned size = field->report_size;
1021         __s32 min = field->logical_minimum;
1022         __s32 max = field->logical_maximum;
1023         __s32 *value;
1024
1025         value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1026         if (!value)
1027                 return;
1028
1029         for (n = 0; n < count; n++) {
1030
1031                 value[n] = min < 0 ?
1032                         snto32(extract(hid, data, offset + n * size, size),
1033                                size) :
1034                         extract(hid, data, offset + n * size, size);
1035
1036                 /* Ignore report if ErrorRollOver */
1037                 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1038                     value[n] >= min && value[n] <= max &&
1039                     field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1040                         goto exit;
1041         }
1042
1043         for (n = 0; n < count; n++) {
1044
1045                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1046                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1047                         continue;
1048                 }
1049
1050                 if (field->value[n] >= min && field->value[n] <= max
1051                         && field->usage[field->value[n] - min].hid
1052                         && search(value, field->value[n], count))
1053                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1054
1055                 if (value[n] >= min && value[n] <= max
1056                         && field->usage[value[n] - min].hid
1057                         && search(field->value, value[n], count))
1058                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1059         }
1060
1061         memcpy(field->value, value, count * sizeof(__s32));
1062 exit:
1063         kfree(value);
1064 }
1065
1066 /*
1067  * Output the field into the report.
1068  */
1069
1070 static void hid_output_field(const struct hid_device *hid,
1071                              struct hid_field *field, __u8 *data)
1072 {
1073         unsigned count = field->report_count;
1074         unsigned offset = field->report_offset;
1075         unsigned size = field->report_size;
1076         unsigned n;
1077
1078         for (n = 0; n < count; n++) {
1079                 if (field->logical_minimum < 0) /* signed values */
1080                         implement(hid, data, offset + n * size, size,
1081                                   s32ton(field->value[n], size));
1082                 else                            /* unsigned values */
1083                         implement(hid, data, offset + n * size, size,
1084                                   field->value[n]);
1085         }
1086 }
1087
1088 /*
1089  * Create a report.
1090  */
1091
1092 void hid_output_report(struct hid_report *report, __u8 *data)
1093 {
1094         unsigned n;
1095
1096         if (report->id > 0)
1097                 *data++ = report->id;
1098
1099         memset(data, 0, ((report->size - 1) >> 3) + 1);
1100         for (n = 0; n < report->maxfield; n++)
1101                 hid_output_field(report->device, report->field[n], data);
1102 }
1103 EXPORT_SYMBOL_GPL(hid_output_report);
1104
1105 /*
1106  * Set a field value. The report this field belongs to has to be
1107  * created and transferred to the device, to set this value in the
1108  * device.
1109  */
1110
1111 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1112 {
1113         unsigned size = field->report_size;
1114
1115         hid_dump_input(field->report->device, field->usage + offset, value);
1116
1117         if (offset >= field->report_count) {
1118                 hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1119                                 offset, field->report_count);
1120                 return -1;
1121         }
1122         if (field->logical_minimum < 0) {
1123                 if (value != snto32(s32ton(value, size), size)) {
1124                         hid_err(field->report->device, "value %d is out of range\n", value);
1125                         return -1;
1126                 }
1127         }
1128         field->value[offset] = value;
1129         return 0;
1130 }
1131 EXPORT_SYMBOL_GPL(hid_set_field);
1132
1133 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1134                 const u8 *data)
1135 {
1136         struct hid_report *report;
1137         unsigned int n = 0;     /* Normally report number is 0 */
1138
1139         /* Device uses numbered reports, data[0] is report number */
1140         if (report_enum->numbered)
1141                 n = *data;
1142
1143         report = report_enum->report_id_hash[n];
1144         if (report == NULL)
1145                 dbg_hid("undefined report_id %u received\n", n);
1146
1147         return report;
1148 }
1149
1150 void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1151                 int interrupt)
1152 {
1153         struct hid_report_enum *report_enum = hid->report_enum + type;
1154         struct hid_report *report;
1155         unsigned int a;
1156         int rsize, csize = size;
1157         u8 *cdata = data;
1158
1159         report = hid_get_report(report_enum, data);
1160         if (!report)
1161                 return;
1162
1163         if (report_enum->numbered) {
1164                 cdata++;
1165                 csize--;
1166         }
1167
1168         rsize = ((report->size - 1) >> 3) + 1;
1169
1170         if (rsize > HID_MAX_BUFFER_SIZE)
1171                 rsize = HID_MAX_BUFFER_SIZE;
1172
1173         if (csize < rsize) {
1174                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1175                                 csize, rsize);
1176                 memset(cdata + csize, 0, rsize - csize);
1177         }
1178
1179         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1180                 hid->hiddev_report_event(hid, report);
1181         if (hid->claimed & HID_CLAIMED_HIDRAW)
1182                 hidraw_report_event(hid, data, size);
1183
1184         for (a = 0; a < report->maxfield; a++)
1185                 hid_input_field(hid, report->field[a], cdata, interrupt);
1186
1187         if (hid->claimed & HID_CLAIMED_INPUT)
1188                 hidinput_report_event(hid, report);
1189 }
1190 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1191
1192 /**
1193  * hid_input_report - report data from lower layer (usb, bt...)
1194  *
1195  * @hid: hid device
1196  * @type: HID report type (HID_*_REPORT)
1197  * @data: report contents
1198  * @size: size of data parameter
1199  * @interrupt: distinguish between interrupt and control transfers
1200  *
1201  * This is data entry for lower layers.
1202  */
1203 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1204 {
1205         struct hid_report_enum *report_enum;
1206         struct hid_driver *hdrv;
1207         struct hid_report *report;
1208         char *buf;
1209         unsigned int i;
1210         int ret = 0;
1211
1212         if (!hid)
1213                 return -ENODEV;
1214
1215         if (down_trylock(&hid->driver_lock))
1216                 return -EBUSY;
1217
1218         if (!hid->driver) {
1219                 ret = -ENODEV;
1220                 goto unlock;
1221         }
1222         report_enum = hid->report_enum + type;
1223         hdrv = hid->driver;
1224
1225         if (!size) {
1226                 dbg_hid("empty report\n");
1227                 ret = -1;
1228                 goto unlock;
1229         }
1230
1231         buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
1232
1233         if (!buf)
1234                 goto nomem;
1235
1236         /* dump the report */
1237         snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1238                         "\nreport (size %u) (%snumbered) = ", size, report_enum->numbered ? "" : "un");
1239         hid_debug_event(hid, buf);
1240
1241         for (i = 0; i < size; i++) {
1242                 snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1243                                 " %02x", data[i]);
1244                 hid_debug_event(hid, buf);
1245         }
1246         hid_debug_event(hid, "\n");
1247         kfree(buf);
1248
1249 nomem:
1250         report = hid_get_report(report_enum, data);
1251
1252         if (!report) {
1253                 ret = -1;
1254                 goto unlock;
1255         }
1256
1257         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1258                 ret = hdrv->raw_event(hid, report, data, size);
1259                 if (ret != 0) {
1260                         ret = ret < 0 ? ret : 0;
1261                         goto unlock;
1262                 }
1263         }
1264
1265         hid_report_raw_event(hid, type, data, size, interrupt);
1266
1267 unlock:
1268         up(&hid->driver_lock);
1269         return ret;
1270 }
1271 EXPORT_SYMBOL_GPL(hid_input_report);
1272
1273 static bool hid_match_one_id(struct hid_device *hdev,
1274                 const struct hid_device_id *id)
1275 {
1276         return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1277                 (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1278                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1279                 (id->product == HID_ANY_ID || id->product == hdev->product);
1280 }
1281
1282 const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1283                 const struct hid_device_id *id)
1284 {
1285         for (; id->bus; id++)
1286                 if (hid_match_one_id(hdev, id))
1287                         return id;
1288
1289         return NULL;
1290 }
1291
1292 static const struct hid_device_id hid_hiddev_list[] = {
1293         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1294         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1295         { }
1296 };
1297
1298 static bool hid_hiddev(struct hid_device *hdev)
1299 {
1300         return !!hid_match_id(hdev, hid_hiddev_list);
1301 }
1302
1303
1304 static ssize_t
1305 read_report_descriptor(struct file *filp, struct kobject *kobj,
1306                 struct bin_attribute *attr,
1307                 char *buf, loff_t off, size_t count)
1308 {
1309         struct device *dev = container_of(kobj, struct device, kobj);
1310         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1311
1312         if (off >= hdev->rsize)
1313                 return 0;
1314
1315         if (off + count > hdev->rsize)
1316                 count = hdev->rsize - off;
1317
1318         memcpy(buf, hdev->rdesc + off, count);
1319
1320         return count;
1321 }
1322
1323 static struct bin_attribute dev_bin_attr_report_desc = {
1324         .attr = { .name = "report_descriptor", .mode = 0444 },
1325         .read = read_report_descriptor,
1326         .size = HID_MAX_DESCRIPTOR_SIZE,
1327 };
1328
1329 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1330 {
1331         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1332                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1333                 "Multi-Axis Controller"
1334         };
1335         const char *type, *bus;
1336         char buf[64];
1337         unsigned int i;
1338         int len;
1339         int ret;
1340
1341         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1342                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1343         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1344                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1345         if (hdev->bus != BUS_USB)
1346                 connect_mask &= ~HID_CONNECT_HIDDEV;
1347         if (hid_hiddev(hdev))
1348                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1349
1350         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1351                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1352                 hdev->claimed |= HID_CLAIMED_INPUT;
1353         if (hdev->quirks & HID_QUIRK_MULTITOUCH) {
1354                 /* this device should be handled by hid-multitouch, skip it */
1355                 return -ENODEV;
1356         }
1357
1358         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1359                         !hdev->hiddev_connect(hdev,
1360                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1361                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1362         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1363                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1364
1365         if (!hdev->claimed) {
1366                 hid_err(hdev, "claimed by neither input, hiddev nor hidraw\n");
1367                 return -ENODEV;
1368         }
1369
1370         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1371                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1372                 hdev->ff_init(hdev);
1373
1374         len = 0;
1375         if (hdev->claimed & HID_CLAIMED_INPUT)
1376                 len += sprintf(buf + len, "input");
1377         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1378                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1379                                 hdev->minor);
1380         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1381                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1382                                 ((struct hidraw *)hdev->hidraw)->minor);
1383
1384         type = "Device";
1385         for (i = 0; i < hdev->maxcollection; i++) {
1386                 struct hid_collection *col = &hdev->collection[i];
1387                 if (col->type == HID_COLLECTION_APPLICATION &&
1388                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1389                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1390                         type = types[col->usage & 0xffff];
1391                         break;
1392                 }
1393         }
1394
1395         switch (hdev->bus) {
1396         case BUS_USB:
1397                 bus = "USB";
1398                 break;
1399         case BUS_BLUETOOTH:
1400                 bus = "BLUETOOTH";
1401                 break;
1402         default:
1403                 bus = "<UNKNOWN>";
1404         }
1405
1406         ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1407         if (ret)
1408                 hid_warn(hdev,
1409                          "can't create sysfs report descriptor attribute err: %d\n", ret);
1410
1411         hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1412                  buf, bus, hdev->version >> 8, hdev->version & 0xff,
1413                  type, hdev->name, hdev->phys);
1414
1415         return 0;
1416 }
1417 EXPORT_SYMBOL_GPL(hid_connect);
1418
1419 void hid_disconnect(struct hid_device *hdev)
1420 {
1421         device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1422         if (hdev->claimed & HID_CLAIMED_INPUT)
1423                 hidinput_disconnect(hdev);
1424         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1425                 hdev->hiddev_disconnect(hdev);
1426         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1427                 hidraw_disconnect(hdev);
1428 }
1429 EXPORT_SYMBOL_GPL(hid_disconnect);
1430
1431 /* a list of devices for which there is a specialized driver on HID bus */
1432 static const struct hid_device_id hid_have_special_driver[] = {
1433         { HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M1968) },
1434         { HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M2256) },
1435         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1436         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1437         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1438         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1439         { HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR, USB_DEVICE_ID_ACTIONSTAR_1011) },
1440         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) },
1441         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1442         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1443         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1444         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1445         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1446         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1447         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1448         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1449         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1450         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1451         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1452         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1453         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1454         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1455         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1456         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1457         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1458         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1459         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1460         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1461         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1462         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1463         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1464         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1465         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1466         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1467         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1468         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1469         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1470         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1471         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1472         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1473         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1474         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1475         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1476         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1477         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1478         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1479         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1480         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1481         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1482         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1483         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1484         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1485         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1486         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1487         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1488         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1489         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1490         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1491         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1492         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1493         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1494         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1495         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1496         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1497         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1498         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1499         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1500         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1501         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1502         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1503         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1504         { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_T91MT) },
1505         { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1506         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1507         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1508         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1509         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1510         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1511         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
1512         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
1513         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1514         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1515         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1516         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1517         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1518         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1519         { HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1520         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1521         { HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, USB_DEVICE_ID_CVTOUCH_SCREEN) },
1522         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1523         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1524         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1525         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1526         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
1527         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1528         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1529         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1530         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1531         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1532         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1533         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1534         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1535         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1536         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1537         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1538         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1539         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2515) },
1540         { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1541         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1542         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_FRUCTEL, USB_DEVICE_ID_GAMETEL_MT_MODE) },
1543         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1544         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1545         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1546         { HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, USB_DEVICE_ID_GOODTOUCH_000f) },
1547         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1548         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1549         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1550         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1551         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1552         { HID_USB_DEVICE(USB_VENDOR_ID_HANVON, USB_DEVICE_ID_HANVON_MULTITOUCH) },
1553         { HID_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT, USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1554         { HID_USB_DEVICE(USB_VENDOR_ID_IDEACOM, USB_DEVICE_ID_IDEACOM_IDC6650) },
1555         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1556         { HID_USB_DEVICE(USB_VENDOR_ID_ILITEK, USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1557         { HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS, USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
1558         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1559         { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1560         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1561         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1562         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1563         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1564         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1565         { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1566         { HID_USB_DEVICE(USB_VENDOR_ID_LG, USB_DEVICE_ID_LG_MULTITOUCH) },
1567         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1568         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1569         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1570         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1571         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1572         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1573         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1574         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1575         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1576         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1577         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1578         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1579         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1580         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1581         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1582         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1583         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1584         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1585         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1586         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1587         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1588         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1589         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1590         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1591 #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1592         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1593         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1594 #endif
1595         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1596         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1597         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1598         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1599         { HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, USB_DEVICE_ID_CRYSTALTOUCH) },
1600         { HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
1601         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1602         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1603         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1604         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1605         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1606         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1607         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1608         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1609         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1610         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1611         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1612         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1613         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1614         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1615         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1616         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1617         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1618         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1619         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1620         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1621         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1622         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1623         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1624         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1625         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1626         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1627         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1628         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1629         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1630         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1631         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1632         { HID_USB_DEVICE(USB_VENDOR_ID_PANASONIC, USB_DEVICE_ID_PANABOARD_UBT780) },
1633         { HID_USB_DEVICE(USB_VENDOR_ID_PANASONIC, USB_DEVICE_ID_PANABOARD_UBT880) },
1634         { HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_PCI) },
1635         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1636         { HID_USB_DEVICE(USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1637         { HID_USB_DEVICE(USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1638         { HID_USB_DEVICE(USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1639         { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1640         { HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1641         { HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_PIXART_IMAGING_INC_OPTICAL_TOUCH_SCREEN) },
1642         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1643         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1644         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1645         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1646         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1647         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1648         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1649         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1650         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1651         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1652         { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1653         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1654         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1655         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1656         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1657         { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, USB_DEVICE_ID_MTP) },
1658         { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, USB_DEVICE_ID_MTP_STM) },
1659         { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX, USB_DEVICE_ID_MTP_SITRONIX) },
1660         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1661         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1662         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1663         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1664         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1665         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1666         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1667         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1668         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1669         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1670         { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1671         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1672         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1673         { HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1674         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1675         { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1676         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1677         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1678         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1679         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1680         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1681         { HID_USB_DEVICE(USB_VENDOR_ID_UNITEC, USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1682         { HID_USB_DEVICE(USB_VENDOR_ID_UNITEC, USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1683         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1684         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1685         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1686         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1687         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1688         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1689         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1690         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
1691         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1692         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1693         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1694         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1695         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1696         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1697         { HID_USB_DEVICE(USB_VENDOR_ID_XAT, USB_DEVICE_ID_XAT_CSR) },
1698         { HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, USB_DEVICE_ID_XIROKU_SPX) },
1699         { HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, USB_DEVICE_ID_XIROKU_MPX) },
1700         { HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, USB_DEVICE_ID_XIROKU_CSR) },
1701         { HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, USB_DEVICE_ID_XIROKU_SPX1) },
1702         { HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, USB_DEVICE_ID_XIROKU_MPX1) },
1703         { HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, USB_DEVICE_ID_XIROKU_CSR1) },
1704         { HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, USB_DEVICE_ID_XIROKU_SPX2) },
1705         { HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, USB_DEVICE_ID_XIROKU_MPX2) },
1706         { HID_USB_DEVICE(USB_VENDOR_ID_XIROKU, USB_DEVICE_ID_XIROKU_CSR2) },
1707         { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1708         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1709         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1710         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1711
1712         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1713         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1714         { }
1715 };
1716
1717 struct hid_dynid {
1718         struct list_head list;
1719         struct hid_device_id id;
1720 };
1721
1722 /**
1723  * store_new_id - add a new HID device ID to this driver and re-probe devices
1724  * @driver: target device driver
1725  * @buf: buffer for scanning device ID data
1726  * @count: input size
1727  *
1728  * Adds a new dynamic hid device ID to this driver,
1729  * and causes the driver to probe for all devices again.
1730  */
1731 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1732                 size_t count)
1733 {
1734         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1735         struct hid_dynid *dynid;
1736         __u32 bus, vendor, product;
1737         unsigned long driver_data = 0;
1738         int ret;
1739
1740         ret = sscanf(buf, "%x %x %x %lx",
1741                         &bus, &vendor, &product, &driver_data);
1742         if (ret < 3)
1743                 return -EINVAL;
1744
1745         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1746         if (!dynid)
1747                 return -ENOMEM;
1748
1749         dynid->id.bus = bus;
1750         dynid->id.group = HID_GROUP_ANY;
1751         dynid->id.vendor = vendor;
1752         dynid->id.product = product;
1753         dynid->id.driver_data = driver_data;
1754
1755         spin_lock(&hdrv->dyn_lock);
1756         list_add_tail(&dynid->list, &hdrv->dyn_list);
1757         spin_unlock(&hdrv->dyn_lock);
1758
1759         ret = driver_attach(&hdrv->driver);
1760
1761         return ret ? : count;
1762 }
1763 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1764
1765 static void hid_free_dynids(struct hid_driver *hdrv)
1766 {
1767         struct hid_dynid *dynid, *n;
1768
1769         spin_lock(&hdrv->dyn_lock);
1770         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1771                 list_del(&dynid->list);
1772                 kfree(dynid);
1773         }
1774         spin_unlock(&hdrv->dyn_lock);
1775 }
1776
1777 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1778                 struct hid_driver *hdrv)
1779 {
1780         struct hid_dynid *dynid;
1781
1782         spin_lock(&hdrv->dyn_lock);
1783         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1784                 if (hid_match_one_id(hdev, &dynid->id)) {
1785                         spin_unlock(&hdrv->dyn_lock);
1786                         return &dynid->id;
1787                 }
1788         }
1789         spin_unlock(&hdrv->dyn_lock);
1790
1791         return hid_match_id(hdev, hdrv->id_table);
1792 }
1793
1794 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1795 {
1796         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1797         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1798
1799         if ((hdev->quirks & HID_QUIRK_MULTITOUCH) &&
1800                 !strncmp(hdrv->name, "hid-multitouch", 14))
1801                 return 1;
1802
1803         if (!hid_match_device(hdev, hdrv))
1804                 return 0;
1805
1806         /* generic wants all that don't have specialized driver */
1807         if (!strncmp(hdrv->name, "generic-", 8) && !hid_ignore_special_drivers)
1808                 return !hid_match_id(hdev, hid_have_special_driver);
1809
1810         return 1;
1811 }
1812
1813 static int hid_device_probe(struct device *dev)
1814 {
1815         struct hid_driver *hdrv = container_of(dev->driver,
1816                         struct hid_driver, driver);
1817         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1818         const struct hid_device_id *id;
1819         int ret = 0;
1820
1821         if (down_interruptible(&hdev->driver_lock))
1822                 return -EINTR;
1823
1824         if (!hdev->driver) {
1825                 id = hid_match_device(hdev, hdrv);
1826                 if (id == NULL) {
1827                         if (!((hdev->quirks & HID_QUIRK_MULTITOUCH) &&
1828                                 !strncmp(hdrv->name, "hid-multitouch", 14))) {
1829                                 ret = -ENODEV;
1830                                 goto unlock;
1831                         }
1832                 }
1833
1834                 hdev->driver = hdrv;
1835                 if (hdrv->probe) {
1836                         ret = hdrv->probe(hdev, id);
1837                 } else { /* default probe */
1838                         ret = hid_open_report(hdev);
1839                         if (!ret)
1840                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1841                 }
1842                 if (ret) {
1843                         hid_close_report(hdev);
1844                         hdev->driver = NULL;
1845                 }
1846         }
1847 unlock:
1848         up(&hdev->driver_lock);
1849         return ret;
1850 }
1851
1852 static int hid_device_remove(struct device *dev)
1853 {
1854         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1855         struct hid_driver *hdrv;
1856
1857         if (down_interruptible(&hdev->driver_lock))
1858                 return -EINTR;
1859
1860         hdrv = hdev->driver;
1861         if (hdrv) {
1862                 if (hdrv->remove)
1863                         hdrv->remove(hdev);
1864                 else /* default remove */
1865                         hid_hw_stop(hdev);
1866                 hid_close_report(hdev);
1867                 hdev->driver = NULL;
1868         }
1869
1870         up(&hdev->driver_lock);
1871         return 0;
1872 }
1873
1874 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
1875                              char *buf)
1876 {
1877         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1878         int len;
1879
1880         len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
1881                        hdev->bus, hdev->group, hdev->vendor, hdev->product);
1882
1883         return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
1884 }
1885
1886 static struct device_attribute hid_dev_attrs[] = {
1887         __ATTR_RO(modalias),
1888         __ATTR_NULL,
1889 };
1890
1891 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1892 {
1893         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1894
1895         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
1896                         hdev->bus, hdev->vendor, hdev->product))
1897                 return -ENOMEM;
1898
1899         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
1900                 return -ENOMEM;
1901
1902         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
1903                 return -ENOMEM;
1904
1905         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
1906                 return -ENOMEM;
1907
1908         if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
1909                            hdev->bus, hdev->group, hdev->vendor, hdev->product))
1910                 return -ENOMEM;
1911
1912         return 0;
1913 }
1914
1915 static struct bus_type hid_bus_type = {
1916         .name           = "hid",
1917         .dev_attrs      = hid_dev_attrs,
1918         .match          = hid_bus_match,
1919         .probe          = hid_device_probe,
1920         .remove         = hid_device_remove,
1921         .uevent         = hid_uevent,
1922 };
1923
1924 /* a list of devices that shouldn't be handled by HID core at all */
1925 static const struct hid_device_id hid_ignore_list[] = {
1926         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
1927         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
1928         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
1929         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
1930         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
1931         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
1932         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
1933         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
1934         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
1935         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
1936         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
1937         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
1938         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
1939         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
1940         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
1941         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
1942         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
1943         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
1944         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
1945         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
1946         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
1947         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
1948         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
1949         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
1950         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
1951         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
1952         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
1953         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
1954         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
1955         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
1956         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
1957         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
1958         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
1959         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
1960         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
1961         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
1962         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
1963         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
1964         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
1965         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
1966         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
1967         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
1968         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
1969         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
1970         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
1971         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
1972         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
1973         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
1974         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
1975         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
1976         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
1977         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
1978         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
1979         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
1980         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
1981         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
1982         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
1983         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
1984         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
1985         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
1986         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
1987         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
1988         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
1989         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
1990         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
1991         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
1992         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
1993         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
1994         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
1995         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
1996         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
1997         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
1998         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
1999         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2000         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2001         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2002         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2003         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2004         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2005         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2006         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2007         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2008         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2009         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2010         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2011         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2012         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2013         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2014         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2015         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2016         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2017         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2018         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2019         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2020         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2021         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2022         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2023         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2024         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2025         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2026         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2027         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2028         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2029         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2030         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2031         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2032         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2033         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2034         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2035         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2036         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2037         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2038         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2039         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2040         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2041         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2042         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2043         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2044         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2045         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2046         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2047         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2048         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2049         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2050         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2051         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2052         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2053         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2054         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2055         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2056         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2057         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2058         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2059         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2060         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2061         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2062         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2063         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2064         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2065         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2066         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2067         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2068         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2069         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2070         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2071         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2072         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2073         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2074         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2075         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2076 #if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2077         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2078         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2079         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2080         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2081         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2082         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2083         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2084         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2085 #endif
2086         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2087         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2088         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2089         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2090         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2091         { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
2092         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2093         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2094         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2095         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2096         { }
2097 };
2098
2099 /**
2100  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2101  *
2102  * There are composite devices for which we want to ignore only a certain
2103  * interface. This is a list of devices for which only the mouse interface will
2104  * be ignored. This allows a dedicated driver to take care of the interface.
2105  */
2106 static const struct hid_device_id hid_mouse_ignore_list[] = {
2107         /* appletouch driver */
2108         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2109         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2110         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2111         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2112         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2113         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2114         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2115         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2116         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2117         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2118         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2119         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2120         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2121         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2122         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2123         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2124         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2125         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2126         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2127         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2128         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2129         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2130         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2131         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2132         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2133         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2134         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2135         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2136         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2137         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2138         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2139         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2140         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2141         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2142         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2143         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2144         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2145         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2146         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2147         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2148         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2149         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2150         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2151         { }
2152 };
2153
2154 static bool hid_ignore(struct hid_device *hdev)
2155 {
2156         switch (hdev->vendor) {
2157         case USB_VENDOR_ID_CODEMERCS:
2158                 /* ignore all Code Mercenaries IOWarrior devices */
2159                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2160                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2161                         return true;
2162                 break;
2163         case USB_VENDOR_ID_LOGITECH:
2164                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2165                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2166                         return true;
2167                 /*
2168                  * The Keene FM transmitter USB device has the same USB ID as
2169                  * the Logitech AudioHub Speaker, but it should ignore the hid.
2170                  * Check if the name is that of the Keene device.
2171                  * For reference: the name of the AudioHub is
2172                  * "HOLTEK  AudioHub Speaker".
2173                  */
2174                 if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2175                         !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2176                                 return true;
2177                 break;
2178         case USB_VENDOR_ID_SOUNDGRAPH:
2179                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2180                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2181                         return true;
2182                 break;
2183         case USB_VENDOR_ID_HANWANG:
2184                 if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2185                     hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2186                         return true;
2187                 break;
2188         case USB_VENDOR_ID_JESS:
2189                 if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2190                                 hdev->type == HID_TYPE_USBNONE)
2191                         return true;
2192         break;
2193         }
2194
2195         if (hdev->type == HID_TYPE_USBMOUSE &&
2196                         hid_match_id(hdev, hid_mouse_ignore_list))
2197                 return true;
2198
2199         return !!hid_match_id(hdev, hid_ignore_list);
2200 }
2201
2202 int hid_add_device(struct hid_device *hdev)
2203 {
2204         static atomic_t id = ATOMIC_INIT(0);
2205         int ret;
2206
2207         if (WARN_ON(hdev->status & HID_STAT_ADDED))
2208                 return -EBUSY;
2209
2210         /* we need to kill them here, otherwise they will stay allocated to
2211          * wait for coming driver */
2212         if (!(hdev->quirks & HID_QUIRK_NO_IGNORE)
2213             && (hid_ignore(hdev) || (hdev->quirks & HID_QUIRK_IGNORE)))
2214                 return -ENODEV;
2215
2216         /*
2217          * Read the device report descriptor once and use as template
2218          * for the driver-specific modifications.
2219          */
2220         ret = hdev->ll_driver->parse(hdev);
2221         if (ret)
2222                 return ret;
2223         if (!hdev->dev_rdesc)
2224                 return -ENODEV;
2225
2226         /*
2227          * Scan generic devices for group information
2228          */
2229         if (hid_ignore_special_drivers ||
2230             !hid_match_id(hdev, hid_have_special_driver)) {
2231                 ret = hid_scan_report(hdev);
2232                 if (ret)
2233                         hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2234         }
2235
2236         /* XXX hack, any other cleaner solution after the driver core
2237          * is converted to allow more than 20 bytes as the device name? */
2238         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2239                      hdev->vendor, hdev->product, atomic_inc_return(&id));
2240
2241         hid_debug_register(hdev, dev_name(&hdev->dev));
2242         ret = device_add(&hdev->dev);
2243         if (!ret)
2244                 hdev->status |= HID_STAT_ADDED;
2245         else
2246                 hid_debug_unregister(hdev);
2247
2248         return ret;
2249 }
2250 EXPORT_SYMBOL_GPL(hid_add_device);
2251
2252 /**
2253  * hid_allocate_device - allocate new hid device descriptor
2254  *
2255  * Allocate and initialize hid device, so that hid_destroy_device might be
2256  * used to free it.
2257  *
2258  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2259  * error value.
2260  */
2261 struct hid_device *hid_allocate_device(void)
2262 {
2263         struct hid_device *hdev;
2264         int ret = -ENOMEM;
2265
2266         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2267         if (hdev == NULL)
2268                 return ERR_PTR(ret);
2269
2270         device_initialize(&hdev->dev);
2271         hdev->dev.release = hid_device_release;
2272         hdev->dev.bus = &hid_bus_type;
2273
2274         hid_close_report(hdev);
2275
2276         init_waitqueue_head(&hdev->debug_wait);
2277         INIT_LIST_HEAD(&hdev->debug_list);
2278         sema_init(&hdev->driver_lock, 1);
2279
2280         return hdev;
2281 }
2282 EXPORT_SYMBOL_GPL(hid_allocate_device);
2283
2284 static void hid_remove_device(struct hid_device *hdev)
2285 {
2286         if (hdev->status & HID_STAT_ADDED) {
2287                 device_del(&hdev->dev);
2288                 hid_debug_unregister(hdev);
2289                 hdev->status &= ~HID_STAT_ADDED;
2290         }
2291         kfree(hdev->dev_rdesc);
2292         hdev->dev_rdesc = NULL;
2293         hdev->dev_rsize = 0;
2294 }
2295
2296 /**
2297  * hid_destroy_device - free previously allocated device
2298  *
2299  * @hdev: hid device
2300  *
2301  * If you allocate hid_device through hid_allocate_device, you should ever
2302  * free by this function.
2303  */
2304 void hid_destroy_device(struct hid_device *hdev)
2305 {
2306         hid_remove_device(hdev);
2307         put_device(&hdev->dev);
2308 }
2309 EXPORT_SYMBOL_GPL(hid_destroy_device);
2310
2311 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2312                 const char *mod_name)
2313 {
2314         int ret;
2315
2316         hdrv->driver.name = hdrv->name;
2317         hdrv->driver.bus = &hid_bus_type;
2318         hdrv->driver.owner = owner;
2319         hdrv->driver.mod_name = mod_name;
2320
2321         INIT_LIST_HEAD(&hdrv->dyn_list);
2322         spin_lock_init(&hdrv->dyn_lock);
2323
2324         ret = driver_register(&hdrv->driver);
2325         if (ret)
2326                 return ret;
2327
2328         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2329         if (ret)
2330                 driver_unregister(&hdrv->driver);
2331
2332         return ret;
2333 }
2334 EXPORT_SYMBOL_GPL(__hid_register_driver);
2335
2336 void hid_unregister_driver(struct hid_driver *hdrv)
2337 {
2338         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2339         driver_unregister(&hdrv->driver);
2340         hid_free_dynids(hdrv);
2341 }
2342 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2343
2344 int hid_check_keys_pressed(struct hid_device *hid)
2345 {
2346         struct hid_input *hidinput;
2347         int i;
2348
2349         if (!(hid->claimed & HID_CLAIMED_INPUT))
2350                 return 0;
2351
2352         list_for_each_entry(hidinput, &hid->inputs, list) {
2353                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2354                         if (hidinput->input->key[i])
2355                                 return 1;
2356         }
2357
2358         return 0;
2359 }
2360
2361 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2362
2363 static int __init hid_init(void)
2364 {
2365         int ret;
2366
2367         if (hid_debug)
2368                 pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2369                         "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2370
2371         ret = bus_register(&hid_bus_type);
2372         if (ret) {
2373                 pr_err("can't register hid bus\n");
2374                 goto err;
2375         }
2376
2377         ret = hidraw_init();
2378         if (ret)
2379                 goto err_bus;
2380
2381         hid_debug_init();
2382
2383         return 0;
2384 err_bus:
2385         bus_unregister(&hid_bus_type);
2386 err:
2387         return ret;
2388 }
2389
2390 static void __exit hid_exit(void)
2391 {
2392         hid_debug_exit();
2393         hidraw_exit();
2394         bus_unregister(&hid_bus_type);
2395 }
2396
2397 module_init(hid_init);
2398 module_exit(hid_exit);
2399
2400 MODULE_AUTHOR("Andreas Gal");
2401 MODULE_AUTHOR("Vojtech Pavlik");
2402 MODULE_AUTHOR("Jiri Kosina");
2403 MODULE_LICENSE(DRIVER_LICENSE);
2404