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         int i;
  96
  97         if (report->maxfield == HID_MAX_FIELDS) {
  98                 hid_err(report->device, "too many fields in report\n");
  99                 return NULL;
 100         }
 101
 102         field = kzalloc((sizeof(struct hid_field) +
 103                          usages * sizeof(struct hid_usage) +
 104                          values * sizeof(unsigned)), GFP_KERNEL);
 105         if (!field)
 106                 return NULL;
 107
 108         field->index = report->maxfield++;
 109         report->field[field->index] = field;
 110         field->usage = (struct hid_usage *)(field + 1);
 111         field->value = (s32 *)(field->usage + usages);
 112         field->report = report;
 113
 114         for (i = 0; i < usages; i++)
 115                 field->usage[i].usage_index = i;
 116
 117         return field;
 118 }
 119
 120 /*
 121  * Open a collection. The type/usage is pushed on the stack.
 122  */
 123
 124 static int open_collection(struct hid_parser *parser, unsigned type)
 125 {
 126         struct hid_collection *collection;
 127         unsigned usage;
 128
 129         usage = parser->local.usage[0];
 130
 131         if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
 132                 hid_err(parser->device, "collection stack overflow\n");
 133                 return -EINVAL;
 134         }
 135
 136         if (parser->device->maxcollection == parser->device->collection_size) {
 137                 collection = kmalloc(sizeof(struct hid_collection) *
 138                                 parser->device->collection_size * 2, GFP_KERNEL);
 139                 if (collection == NULL) {
 140                         hid_err(parser->device, "failed to reallocate collection array\n");
 141                         return -ENOMEM;
 142                 }
 143                 memcpy(collection, parser->device->collection,
 144                         sizeof(struct hid_collection) *
 145                         parser->device->collection_size);
 146                 memset(collection + parser->device->collection_size, 0,
 147                         sizeof(struct hid_collection) *
 148                         parser->device->collection_size);
 149                 kfree(parser->device->collection);
 150                 parser->device->collection = collection;
 151                 parser->device->collection_size *= 2;
 152         }
 153
 154         parser->collection_stack[parser->collection_stack_ptr++] =
 155                 parser->device->maxcollection;
 156
 157         collection = parser->device->collection +
 158                 parser->device->maxcollection++;
 159         collection->type = type;
 160         collection->usage = usage;
 161         collection->level = parser->collection_stack_ptr - 1;
 162
 163         if (type == HID_COLLECTION_APPLICATION)
 164                 parser->device->maxapplication++;
 165
 166         return 0;
 167 }
 168
 169 /*
 170  * Close a collection.
 171  */
 172
 173 static int close_collection(struct hid_parser *parser)
 174 {
 175         if (!parser->collection_stack_ptr) {
 176                 hid_err(parser->device, "collection stack underflow\n");
 177                 return -EINVAL;
 178         }
 179         parser->collection_stack_ptr--;
 180         return 0;
 181 }
 182
 183 /*
 184  * Climb up the stack, search for the specified collection type
 185  * and return the usage.
 186  */
 187
 188 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
 189 {
 190         struct hid_collection *collection = parser->device->collection;
 191         int n;
 192
 193         for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
 194                 unsigned index = parser->collection_stack[n];
 195                 if (collection[index].type == type)
 196                         return collection[index].usage;
 197         }
 198         return 0; /* we know nothing about this usage type */
 199 }
 200
 201 /*
 202  * Add a usage to the temporary parser table.
 203  */
 204
 205 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
 206 {
 207         if (parser->local.usage_index >= HID_MAX_USAGES) {
 208                 hid_err(parser->device, "usage index exceeded\n");
 209                 return -1;
 210         }
 211         parser->local.usage[parser->local.usage_index] = usage;
 212         parser->local.collection_index[parser->local.usage_index] =
 213                 parser->collection_stack_ptr ?
 214                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
 215         parser->local.usage_index++;
 216         return 0;
 217 }
 218
 219 /*
 220  * Register a new field for this report.
 221  */
 222
 223 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
 224 {
 225         struct hid_report *report;
 226         struct hid_field *field;
 227         int usages;
 228         unsigned offset;
 229         int i;
 230
 231         report = hid_register_report(parser->device, report_type, parser->global.report_id);
 232         if (!report) {
 233                 hid_err(parser->device, "hid_register_report failed\n");
 234                 return -1;
 235         }
 236
 237         /* Handle both signed and unsigned cases properly */
 238         if ((parser->global.logical_minimum < 0 &&
 239                 parser->global.logical_maximum <
 240                 parser->global.logical_minimum) ||
 241                 (parser->global.logical_minimum >= 0 &&
 242                 (__u32)parser->global.logical_maximum <
 243                 (__u32)parser->global.logical_minimum)) {
 244                 dbg_hid("logical range invalid 0x%x 0x%x\n",
 245                         parser->global.logical_minimum,
 246                         parser->global.logical_maximum);
 247                 return -1;
 248         }
 249
 250         offset = report->size;
 251         report->size += parser->global.report_size * parser->global.report_count;
 252
 253         if (!parser->local.usage_index) /* Ignore padding fields */
 254                 return 0;
 255
 256         usages = max_t(int, parser->local.usage_index, parser->global.report_count);
 257
 258         field = hid_register_field(report, usages, parser->global.report_count);
 259         if (!field)
 260                 return 0;
 261
 262         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
 263         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
 264         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
 265
 266         for (i = 0; i < usages; i++) {
 267                 int j = i;
 268                 /* Duplicate the last usage we parsed if we have excess values */
 269                 if (i >= parser->local.usage_index)
 270                         j = parser->local.usage_index - 1;
 271                 field->usage[i].hid = parser->local.usage[j];
 272                 field->usage[i].collection_index =
 273                         parser->local.collection_index[j];
 274         }
 275
 276         field->maxusage = usages;
 277         field->flags = flags;
 278         field->report_offset = offset;
 279         field->report_type = report_type;
 280         field->report_size = parser->global.report_size;
 281         field->report_count = parser->global.report_count;
 282         field->logical_minimum = parser->global.logical_minimum;
 283         field->logical_maximum = parser->global.logical_maximum;
 284         field->physical_minimum = parser->global.physical_minimum;
 285         field->physical_maximum = parser->global.physical_maximum;
 286         field->unit_exponent = parser->global.unit_exponent;
 287         field->unit = parser->global.unit;
 288
 289         return 0;
 290 }
 291
 292 /*
 293  * Read data value from item.
 294  */
 295
 296 static u32 item_udata(struct hid_item *item)
 297 {
 298         switch (item->size) {
 299         case 1: return item->data.u8;
 300         case 2: return item->data.u16;
 301         case 4: return item->data.u32;
 302         }
 303         return 0;
 304 }
 305
 306 static s32 item_sdata(struct hid_item *item)
 307 {
 308         switch (item->size) {
 309         case 1: return item->data.s8;
 310         case 2: return item->data.s16;
 311         case 4: return item->data.s32;
 312         }
 313         return 0;
 314 }
 315
 316 /*
 317  * Process a global item.
 318  */
 319
 320 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
 321 {
 322         __u32 raw_value;
 323         switch (item->tag) {
 324         case HID_GLOBAL_ITEM_TAG_PUSH:
 325
 326                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
 327                         hid_err(parser->device, "global environment stack overflow\n");
 328                         return -1;
 329                 }
 330
 331                 memcpy(parser->global_stack + parser->global_stack_ptr++,
 332                         &parser->global, sizeof(struct hid_global));
 333                 return 0;
 334
 335         case HID_GLOBAL_ITEM_TAG_POP:
 336
 337                 if (!parser->global_stack_ptr) {
 338                         hid_err(parser->device, "global environment stack underflow\n");
 339                         return -1;
 340                 }
 341
 342                 memcpy(&parser->global, parser->global_stack +
 343                         --parser->global_stack_ptr, sizeof(struct hid_global));
 344                 return 0;
 345
 346         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
 347                 parser->global.usage_page = item_udata(item);
 348                 return 0;
 349
 350         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
 351                 parser->global.logical_minimum = item_sdata(item);
 352                 return 0;
 353
 354         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
 355                 if (parser->global.logical_minimum < 0)
 356                         parser->global.logical_maximum = item_sdata(item);
 357                 else
 358                         parser->global.logical_maximum = item_udata(item);
 359                 return 0;
 360
 361         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
 362                 parser->global.physical_minimum = item_sdata(item);
 363                 return 0;
 364
 365         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
 366                 if (parser->global.physical_minimum < 0)
 367                         parser->global.physical_maximum = item_sdata(item);
 368                 else
 369                         parser->global.physical_maximum = item_udata(item);
 370                 return 0;
 371
 372         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
 373                 /* Units exponent negative numbers are given through a
 374                  * two's complement.
 375                  * See "6.2.2.7 Global Items" for more information. */
 376                 raw_value = item_udata(item);
 377                 if (!(raw_value & 0xfffffff0))
 378                         parser->global.unit_exponent = hid_snto32(raw_value, 4);
 379                 else
 380                         parser->global.unit_exponent = raw_value;
 381                 return 0;
 382
 383         case HID_GLOBAL_ITEM_TAG_UNIT:
 384                 parser->global.unit = item_udata(item);
 385                 return 0;
 386
 387         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
 388                 parser->global.report_size = item_udata(item);
 389                 if (parser->global.report_size > 128) {
 390                         hid_err(parser->device, "invalid report_size %d\n",
 391                                         parser->global.report_size);
 392                         return -1;
 393                 }
 394                 return 0;
 395
 396         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
 397                 parser->global.report_count = item_udata(item);
 398                 if (parser->global.report_count > HID_MAX_USAGES) {
 399                         hid_err(parser->device, "invalid report_count %d\n",
 400                                         parser->global.report_count);
 401                         return -1;
 402                 }
 403                 return 0;
 404
 405         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
 406                 parser->global.report_id = item_udata(item);
 407                 if (parser->global.report_id == 0) {
 408                         hid_err(parser->device, "report_id 0 is invalid\n");
 409                         return -1;
 410                 }
 411                 return 0;
 412
 413         default:
 414                 hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
 415                 return -1;
 416         }
 417 }
 418
 419 /*
 420  * Process a local item.
 421  */
 422
 423 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 424 {
 425         __u32 data;
 426         unsigned n;
 427
 428         data = item_udata(item);
 429
 430         switch (item->tag) {
 431         case HID_LOCAL_ITEM_TAG_DELIMITER:
 432
 433                 if (data) {
 434                         /*
 435                          * We treat items before the first delimiter
 436                          * as global to all usage sets (branch 0).
 437                          * In the moment we process only these global
 438                          * items and the first delimiter set.
 439                          */
 440                         if (parser->local.delimiter_depth != 0) {
 441                                 hid_err(parser->device, "nested delimiters\n");
 442                                 return -1;
 443                         }
 444                         parser->local.delimiter_depth++;
 445                         parser->local.delimiter_branch++;
 446                 } else {
 447                         if (parser->local.delimiter_depth < 1) {
 448                                 hid_err(parser->device, "bogus close delimiter\n");
 449                                 return -1;
 450                         }
 451                         parser->local.delimiter_depth--;
 452                 }
 453                 return 1;
 454
 455         case HID_LOCAL_ITEM_TAG_USAGE:
 456
 457                 if (parser->local.delimiter_branch > 1) {
 458                         dbg_hid("alternative usage ignored\n");
 459                         return 0;
 460                 }
 461
 462                 if (item->size <= 2)
 463                         data = (parser->global.usage_page << 16) + data;
 464
 465                 return hid_add_usage(parser, data);
 466
 467         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 468
 469                 if (parser->local.delimiter_branch > 1) {
 470                         dbg_hid("alternative usage ignored\n");
 471                         return 0;
 472                 }
 473
 474                 if (item->size <= 2)
 475                         data = (parser->global.usage_page << 16) + data;
 476
 477                 parser->local.usage_minimum = data;
 478                 return 0;
 479
 480         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 481
 482                 if (parser->local.delimiter_branch > 1) {
 483                         dbg_hid("alternative usage ignored\n");
 484                         return 0;
 485                 }
 486
 487                 if (item->size <= 2)
 488                         data = (parser->global.usage_page << 16) + data;
 489
 490                 for (n = parser->local.usage_minimum; n <= data; n++)
 491                         if (hid_add_usage(parser, n)) {
 492                                 dbg_hid("hid_add_usage failed\n");
 493                                 return -1;
 494                         }
 495                 return 0;
 496
 497         default:
 498
 499                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
 500                 return 0;
 501         }
 502         return 0;
 503 }
 504
 505 /*
 506  * Process a main item.
 507  */
 508
 509 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
 510 {
 511         __u32 data;
 512         int ret;
 513
 514         data = item_udata(item);
 515
 516         switch (item->tag) {
 517         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 518                 ret = open_collection(parser, data & 0xff);
 519                 break;
 520         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 521                 ret = close_collection(parser);
 522                 break;
 523         case HID_MAIN_ITEM_TAG_INPUT:
 524                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
 525                 break;
 526         case HID_MAIN_ITEM_TAG_OUTPUT:
 527                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
 528                 break;
 529         case HID_MAIN_ITEM_TAG_FEATURE:
 530                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
 531                 break;
 532         default:
 533                 hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
 534                 ret = 0;
 535         }
 536
 537         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
 538
 539         return ret;
 540 }
 541
 542 /*
 543  * Process a reserved item.
 544  */
 545
 546 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
 547 {
 548         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
 549         return 0;
 550 }
 551
 552 /*
 553  * Free a report and all registered fields. The field->usage and
 554  * field->value table's are allocated behind the field, so we need
 555  * only to free(field) itself.
 556  */
 557
 558 static void hid_free_report(struct hid_report *report)
 559 {
 560         unsigned n;
 561
 562         for (n = 0; n < report->maxfield; n++)
 563                 kfree(report->field[n]);
 564         kfree(report);
 565 }
 566
 567 /*
 568  * Close report. This function returns the device
 569  * state to the point prior to hid_open_report().
 570  */
 571 static void hid_close_report(struct hid_device *device)
 572 {
 573         unsigned i, j;
 574
 575         for (i = 0; i < HID_REPORT_TYPES; i++) {
 576                 struct hid_report_enum *report_enum = device->report_enum + i;
 577
 578                 for (j = 0; j < 256; j++) {
 579                         struct hid_report *report = report_enum->report_id_hash[j];
 580                         if (report)
 581                                 hid_free_report(report);
 582                 }
 583                 memset(report_enum, 0, sizeof(*report_enum));
 584                 INIT_LIST_HEAD(&report_enum->report_list);
 585         }
 586
 587         kfree(device->rdesc);
 588         device->rdesc = NULL;
 589         device->rsize = 0;
 590
 591         kfree(device->collection);
 592         device->collection = NULL;
 593         device->collection_size = 0;
 594         device->maxcollection = 0;
 595         device->maxapplication = 0;
 596
 597         device->status &= ~HID_STAT_PARSED;
 598 }
 599
 600 /*
 601  * Free a device structure, all reports, and all fields.
 602  */
 603
 604 static void hid_device_release(struct device *dev)
 605 {
 606         struct hid_device *hid = container_of(dev, struct hid_device, dev);
 607
 608         hid_close_report(hid);
 609         kfree(hid->dev_rdesc);
 610         kfree(hid);
 611 }
 612
 613 /*
 614  * Fetch a report description item from the data stream. We support long
 615  * items, though they are not used yet.
 616  */
 617
 618 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
 619 {
 620         u8 b;
 621
 622         if ((end - start) <= 0)
 623                 return NULL;
 624
 625         b = *start++;
 626
 627         item->type = (b >> 2) & 3;
 628         item->tag  = (b >> 4) & 15;
 629
 630         if (item->tag == HID_ITEM_TAG_LONG) {
 631
 632                 item->format = HID_ITEM_FORMAT_LONG;
 633
 634                 if ((end - start) < 2)
 635                         return NULL;
 636
 637                 item->size = *start++;
 638                 item->tag  = *start++;
 639
 640                 if ((end - start) < item->size)
 641                         return NULL;
 642
 643                 item->data.longdata = start;
 644                 start += item->size;
 645                 return start;
 646         }
 647
 648         item->format = HID_ITEM_FORMAT_SHORT;
 649         item->size = b & 3;
 650
 651         switch (item->size) {
 652         case 0:
 653                 return start;
 654
 655         case 1:
 656                 if ((end - start) < 1)
 657                         return NULL;
 658                 item->data.u8 = *start++;
 659                 return start;
 660
 661         case 2:
 662                 if ((end - start) < 2)
 663                         return NULL;
 664                 item->data.u16 = get_unaligned_le16(start);
 665                 start = (__u8 *)((__le16 *)start + 1);
 666                 return start;
 667
 668         case 3:
 669                 item->size++;
 670                 if ((end - start) < 4)
 671                         return NULL;
 672                 item->data.u32 = get_unaligned_le32(start);
 673                 start = (__u8 *)((__le32 *)start + 1);
 674                 return start;
 675         }
 676
 677         return NULL;
 678 }
 679
 680 static void hid_scan_usage(struct hid_device *hid, u32 usage)
 681 {
 682         if (usage == HID_DG_CONTACTID)
 683                 hid->group = HID_GROUP_MULTITOUCH;
 684 }
 685
 686 /*
 687  * Scan a report descriptor before the device is added to the bus.
 688  * Sets device groups and other properties that determine what driver
 689  * to load.
 690  */
 691 static int hid_scan_report(struct hid_device *hid)
 692 {
 693         unsigned int page = 0, delim = 0;
 694         __u8 *start = hid->dev_rdesc;
 695         __u8 *end = start + hid->dev_rsize;
 696         unsigned int u, u_min = 0, u_max = 0;
 697         struct hid_item item;
 698
 699         hid->group = HID_GROUP_GENERIC;
 700         while ((start = fetch_item(start, end, &item)) != NULL) {
 701                 if (item.format != HID_ITEM_FORMAT_SHORT)
 702                         return -EINVAL;
 703                 if (item.type == HID_ITEM_TYPE_GLOBAL) {
 704                         if (item.tag == HID_GLOBAL_ITEM_TAG_USAGE_PAGE)
 705                                 page = item_udata(&item) << 16;
 706                 } else if (item.type == HID_ITEM_TYPE_LOCAL) {
 707                         if (delim > 1)
 708                                 break;
 709                         u = item_udata(&item);
 710                         if (item.size <= 2)
 711                                 u += page;
 712                         switch (item.tag) {
 713                         case HID_LOCAL_ITEM_TAG_DELIMITER:
 714                                 delim += !!u;
 715                                 break;
 716                         case HID_LOCAL_ITEM_TAG_USAGE:
 717                                 hid_scan_usage(hid, u);
 718                                 break;
 719                         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 720                                 u_min = u;
 721                                 break;
 722                         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 723                                 u_max = u;
 724                                 for (u = u_min; u <= u_max; u++)
 725                                         hid_scan_usage(hid, u);
 726                                 break;
 727                         }
 728                 } else if (page == HID_UP_SENSOR &&
 729                         item.type == HID_ITEM_TYPE_MAIN &&
 730                         item.tag == HID_MAIN_ITEM_TAG_BEGIN_COLLECTION &&
 731                         (item_udata(&item) & 0xff) == HID_COLLECTION_PHYSICAL)
 732                         hid->group = HID_GROUP_SENSOR_HUB;
 733         }
 734
 735         return 0;
 736 }
 737
 738 /**
 739  * hid_parse_report - parse device report
 740  *
 741  * @device: hid device
 742  * @start: report start
 743  * @size: report size
 744  *
 745  * Allocate the device report as read by the bus driver. This function should
 746  * only be called from parse() in ll drivers.
 747  */
 748 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
 749 {
 750         hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
 751         if (!hid->dev_rdesc)
 752                 return -ENOMEM;
 753         hid->dev_rsize = size;
 754         return 0;
 755 }
 756 EXPORT_SYMBOL_GPL(hid_parse_report);
 757
 758 /**
 759  * hid_open_report - open a driver-specific device report
 760  *
 761  * @device: hid device
 762  *
 763  * Parse a report description into a hid_device structure. Reports are
 764  * enumerated, fields are attached to these reports.
 765  * 0 returned on success, otherwise nonzero error value.
 766  *
 767  * This function (or the equivalent hid_parse() macro) should only be
 768  * called from probe() in drivers, before starting the device.
 769  */
 770 int hid_open_report(struct hid_device *device)
 771 {
 772         struct hid_parser *parser;
 773         struct hid_item item;
 774         unsigned int size;
 775         __u8 *start;
 776         __u8 *buf;
 777         __u8 *end;
 778         int ret;
 779         static int (*dispatch_type[])(struct hid_parser *parser,
 780                                       struct hid_item *item) = {
 781                 hid_parser_main,
 782                 hid_parser_global,
 783                 hid_parser_local,
 784                 hid_parser_reserved
 785         };
 786
 787         if (WARN_ON(device->status & HID_STAT_PARSED))
 788                 return -EBUSY;
 789
 790         start = device->dev_rdesc;
 791         if (WARN_ON(!start))
 792                 return -ENODEV;
 793         size = device->dev_rsize;
 794
 795         buf = kmemdup(start, size, GFP_KERNEL);
 796         if (buf == NULL)
 797                 return -ENOMEM;
 798
 799         if (device->driver->report_fixup)
 800                 start = device->driver->report_fixup(device, buf, &size);
 801         else
 802                 start = buf;
 803
 804         start = kmemdup(start, size, GFP_KERNEL);
 805         kfree(buf);
 806         if (start == NULL)
 807                 return -ENOMEM;
 808
 809         device->rdesc = start;
 810         device->rsize = size;
 811
 812         parser = vzalloc(sizeof(struct hid_parser));
 813         if (!parser) {
 814                 ret = -ENOMEM;
 815                 goto err;
 816         }
 817
 818         parser->device = device;
 819
 820         end = start + size;
 821
 822         device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
 823                                      sizeof(struct hid_collection), GFP_KERNEL);
 824         if (!device->collection) {
 825                 ret = -ENOMEM;
 826                 goto err;
 827         }
 828         device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
 829
 830         ret = -EINVAL;
 831         while ((start = fetch_item(start, end, &item)) != NULL) {
 832
 833                 if (item.format != HID_ITEM_FORMAT_SHORT) {
 834                         hid_err(device, "unexpected long global item\n");
 835                         goto err;
 836                 }
 837
 838                 if (dispatch_type[item.type](parser, &item)) {
 839                         hid_err(device, "item %u %u %u %u parsing failed\n",
 840                                 item.format, (unsigned)item.size,
 841                                 (unsigned)item.type, (unsigned)item.tag);
 842                         goto err;
 843                 }
 844
 845                 if (start == end) {
 846                         if (parser->collection_stack_ptr) {
 847                                 hid_err(device, "unbalanced collection at end of report description\n");
 848                                 goto err;
 849                         }
 850                         if (parser->local.delimiter_depth) {
 851                                 hid_err(device, "unbalanced delimiter at end of report description\n");
 852                                 goto err;
 853                         }
 854                         vfree(parser);
 855                         device->status |= HID_STAT_PARSED;
 856                         return 0;
 857                 }
 858         }
 859
 860         hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
 861 err:
 862         vfree(parser);
 863         hid_close_report(device);
 864         return ret;
 865 }
 866 EXPORT_SYMBOL_GPL(hid_open_report);
 867
 868 /*
 869  * Convert a signed n-bit integer to signed 32-bit integer. Common
 870  * cases are done through the compiler, the screwed things has to be
 871  * done by hand.
 872  */
 873
 874 static s32 snto32(__u32 value, unsigned n)
 875 {
 876         switch (n) {
 877         case 8:  return ((__s8)value);
 878         case 16: return ((__s16)value);
 879         case 32: return ((__s32)value);
 880         }
 881         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
 882 }
 883
 884 s32 hid_snto32(__u32 value, unsigned n)
 885 {
 886         return snto32(value, n);
 887 }
 888 EXPORT_SYMBOL_GPL(hid_snto32);
 889
 890 /*
 891  * Convert a signed 32-bit integer to a signed n-bit integer.
 892  */
 893
 894 static u32 s32ton(__s32 value, unsigned n)
 895 {
 896         s32 a = value >> (n - 1);
 897         if (a && a != -1)
 898                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
 899         return value & ((1 << n) - 1);
 900 }
 901
 902 /*
 903  * Extract/implement a data field from/to a little endian report (bit array).
 904  *
 905  * Code sort-of follows HID spec:
 906  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
 907  *
 908  * While the USB HID spec allows unlimited length bit fields in "report
 909  * descriptors", most devices never use more than 16 bits.
 910  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
 911  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
 912  */
 913
 914 static __u32 extract(const struct hid_device *hid, __u8 *report,
 915                      unsigned offset, unsigned n)
 916 {
 917         u64 x;
 918
 919         if (n > 32)
 920                 hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
 921                          n, current->comm);
 922
 923         report += offset >> 3;  /* adjust byte index */
 924         offset &= 7;            /* now only need bit offset into one byte */
 925         x = get_unaligned_le64(report);
 926         x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
 927         return (u32) x;
 928 }
 929
 930 /*
 931  * "implement" : set bits in a little endian bit stream.
 932  * Same concepts as "extract" (see comments above).
 933  * The data mangled in the bit stream remains in little endian
 934  * order the whole time. It make more sense to talk about
 935  * endianness of register values by considering a register
 936  * a "cached" copy of the little endiad bit stream.
 937  */
 938 static void implement(const struct hid_device *hid, __u8 *report,
 939                       unsigned offset, unsigned n, __u32 value)
 940 {
 941         u64 x;
 942         u64 m = (1ULL << n) - 1;
 943
 944         if (n > 32)
 945                 hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
 946                          __func__, n, current->comm);
 947
 948         if (value > m)
 949                 hid_warn(hid, "%s() called with too large value %d! (%s)\n",
 950                          __func__, value, current->comm);
 951         WARN_ON(value > m);
 952         value &= m;
 953
 954         report += offset >> 3;
 955         offset &= 7;
 956
 957         x = get_unaligned_le64(report);
 958         x &= ~(m << offset);
 959         x |= ((u64)value) << offset;
 960         put_unaligned_le64(x, report);
 961 }
 962
 963 /*
 964  * Search an array for a value.
 965  */
 966
 967 static int search(__s32 *array, __s32 value, unsigned n)
 968 {
 969         while (n--) {
 970                 if (*array++ == value)
 971                         return 0;
 972         }
 973         return -1;
 974 }
 975
 976 /**
 977  * hid_match_report - check if driver's raw_event should be called
 978  *
 979  * @hid: hid device
 980  * @report_type: type to match against
 981  *
 982  * compare hid->driver->report_table->report_type to report->type
 983  */
 984 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
 985 {
 986         const struct hid_report_id *id = hid->driver->report_table;
 987
 988         if (!id) /* NULL means all */
 989                 return 1;
 990
 991         for (; id->report_type != HID_TERMINATOR; id++)
 992                 if (id->report_type == HID_ANY_ID ||
 993                                 id->report_type == report->type)
 994                         return 1;
 995         return 0;
 996 }
 997
 998 /**
 999  * hid_match_usage - check if driver's event should be called
1000  *
1001  * @hid: hid device
1002  * @usage: usage to match against
1003  *
1004  * compare hid->driver->usage_table->usage_{type,code} to
1005  * usage->usage_{type,code}
1006  */
1007 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1008 {
1009         const struct hid_usage_id *id = hid->driver->usage_table;
1010
1011         if (!id) /* NULL means all */
1012                 return 1;
1013
1014         for (; id->usage_type != HID_ANY_ID - 1; id++)
1015                 if ((id->usage_hid == HID_ANY_ID ||
1016                                 id->usage_hid == usage->hid) &&
1017                                 (id->usage_type == HID_ANY_ID ||
1018                                 id->usage_type == usage->type) &&
1019                                 (id->usage_code == HID_ANY_ID ||
1020                                  id->usage_code == usage->code))
1021                         return 1;
1022         return 0;
1023 }
1024
1025 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1026                 struct hid_usage *usage, __s32 value, int interrupt)
1027 {
1028         struct hid_driver *hdrv = hid->driver;
1029         int ret;
1030
1031         if (!list_empty(&hid->debug_list))
1032                 hid_dump_input(hid, usage, value);
1033
1034         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1035                 ret = hdrv->event(hid, field, usage, value);
1036                 if (ret != 0) {
1037                         if (ret < 0)
1038                                 hid_err(hid, "%s's event failed with %d\n",
1039                                                 hdrv->name, ret);
1040                         return;
1041                 }
1042         }
1043
1044         if (hid->claimed & HID_CLAIMED_INPUT)
1045                 hidinput_hid_event(hid, field, usage, value);
1046         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1047                 hid->hiddev_hid_event(hid, field, usage, value);
1048 }
1049
1050 /*
1051  * Analyse a received field, and fetch the data from it. The field
1052  * content is stored for next report processing (we do differential
1053  * reporting to the layer).
1054  */
1055
1056 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1057                             __u8 *data, int interrupt)
1058 {
1059         unsigned n;
1060         unsigned count = field->report_count;
1061         unsigned offset = field->report_offset;
1062         unsigned size = field->report_size;
1063         __s32 min = field->logical_minimum;
1064         __s32 max = field->logical_maximum;
1065         __s32 *value;
1066
1067         value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1068         if (!value)
1069                 return;
1070
1071         for (n = 0; n < count; n++) {
1072
1073                 value[n] = min < 0 ?
1074                         snto32(extract(hid, data, offset + n * size, size),
1075                                size) :
1076                         extract(hid, data, offset + n * size, size);
1077
1078                 /* Ignore report if ErrorRollOver */
1079                 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1080                     value[n] >= min && value[n] <= max &&
1081                     field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1082                         goto exit;
1083         }
1084
1085         for (n = 0; n < count; n++) {
1086
1087                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1088                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1089                         continue;
1090                 }
1091
1092                 if (field->value[n] >= min && field->value[n] <= max
1093                         && field->usage[field->value[n] - min].hid
1094                         && search(value, field->value[n], count))
1095                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1096
1097                 if (value[n] >= min && value[n] <= max
1098                         && field->usage[value[n] - min].hid
1099                         && search(field->value, value[n], count))
1100                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1101         }
1102
1103         memcpy(field->value, value, count * sizeof(__s32));
1104 exit:
1105         kfree(value);
1106 }
1107
1108 /*
1109  * Output the field into the report.
1110  */
1111
1112 static void hid_output_field(const struct hid_device *hid,
1113                              struct hid_field *field, __u8 *data)
1114 {
1115         unsigned count = field->report_count;
1116         unsigned offset = field->report_offset;
1117         unsigned size = field->report_size;
1118         unsigned n;
1119
1120         for (n = 0; n < count; n++) {
1121                 if (field->logical_minimum < 0) /* signed values */
1122                         implement(hid, data, offset + n * size, size,
1123                                   s32ton(field->value[n], size));
1124                 else                            /* unsigned values */
1125                         implement(hid, data, offset + n * size, size,
1126                                   field->value[n]);
1127         }
1128 }
1129
1130 /*
1131  * Create a report.
1132  */
1133
1134 void hid_output_report(struct hid_report *report, __u8 *data)
1135 {
1136         unsigned n;
1137
1138         if (report->id > 0)
1139                 *data++ = report->id;
1140
1141         memset(data, 0, ((report->size - 1) >> 3) + 1);
1142         for (n = 0; n < report->maxfield; n++)
1143                 hid_output_field(report->device, report->field[n], data);
1144 }
1145 EXPORT_SYMBOL_GPL(hid_output_report);
1146
1147 /*
1148  * Set a field value. The report this field belongs to has to be
1149  * created and transferred to the device, to set this value in the
1150  * device.
1151  */
1152
1153 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1154 {
1155         unsigned size = field->report_size;
1156
1157         hid_dump_input(field->report->device, field->usage + offset, value);
1158
1159         if (offset >= field->report_count) {
1160                 hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1161                                 offset, field->report_count);
1162                 return -1;
1163         }
1164         if (field->logical_minimum < 0) {
1165                 if (value != snto32(s32ton(value, size), size)) {
1166                         hid_err(field->report->device, "value %d is out of range\n", value);
1167                         return -1;
1168                 }
1169         }
1170         field->value[offset] = value;
1171         return 0;
1172 }
1173 EXPORT_SYMBOL_GPL(hid_set_field);
1174
1175 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1176                 const u8 *data)
1177 {
1178         struct hid_report *report;
1179         unsigned int n = 0;     /* Normally report number is 0 */
1180
1181         /* Device uses numbered reports, data[0] is report number */
1182         if (report_enum->numbered)
1183                 n = *data;
1184
1185         report = report_enum->report_id_hash[n];
1186         if (report == NULL)
1187                 dbg_hid("undefined report_id %u received\n", n);
1188
1189         return report;
1190 }
1191
1192 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1193                 int interrupt)
1194 {
1195         struct hid_report_enum *report_enum = hid->report_enum + type;
1196         struct hid_report *report;
1197         struct hid_driver *hdrv;
1198         unsigned int a;
1199         int rsize, csize = size;
1200         u8 *cdata = data;
1201         int ret = 0;
1202
1203         report = hid_get_report(report_enum, data);
1204         if (!report)
1205                 goto out;
1206
1207         if (report_enum->numbered) {
1208                 cdata++;
1209                 csize--;
1210         }
1211
1212         rsize = ((report->size - 1) >> 3) + 1;
1213
1214         if (rsize > HID_MAX_BUFFER_SIZE)
1215                 rsize = HID_MAX_BUFFER_SIZE;
1216
1217         if (csize < rsize) {
1218                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1219                                 csize, rsize);
1220                 memset(cdata + csize, 0, rsize - csize);
1221         }
1222
1223         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1224                 hid->hiddev_report_event(hid, report);
1225         if (hid->claimed & HID_CLAIMED_HIDRAW) {
1226                 ret = hidraw_report_event(hid, data, size);
1227                 if (ret)
1228                         goto out;
1229         }
1230
1231         if (hid->claimed != HID_CLAIMED_HIDRAW) {
1232                 for (a = 0; a < report->maxfield; a++)
1233                         hid_input_field(hid, report->field[a], cdata, interrupt);
1234                 hdrv = hid->driver;
1235                 if (hdrv && hdrv->report)
1236                         hdrv->report(hid, report);
1237         }
1238
1239         if (hid->claimed & HID_CLAIMED_INPUT)
1240                 hidinput_report_event(hid, report);
1241 out:
1242         return ret;
1243 }
1244 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1245
1246 /**
1247  * hid_input_report - report data from lower layer (usb, bt...)
1248  *
1249  * @hid: hid device
1250  * @type: HID report type (HID_*_REPORT)
1251  * @data: report contents
1252  * @size: size of data parameter
1253  * @interrupt: distinguish between interrupt and control transfers
1254  *
1255  * This is data entry for lower layers.
1256  */
1257 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1258 {
1259         struct hid_report_enum *report_enum;
1260         struct hid_driver *hdrv;
1261         struct hid_report *report;
1262         int ret = 0;
1263
1264         if (!hid)
1265                 return -ENODEV;
1266
1267         if (down_trylock(&hid->driver_input_lock))
1268                 return -EBUSY;
1269
1270         if (!hid->driver) {
1271                 ret = -ENODEV;
1272                 goto unlock;
1273         }
1274         report_enum = hid->report_enum + type;
1275         hdrv = hid->driver;
1276
1277         if (!size) {
1278                 dbg_hid("empty report\n");
1279                 ret = -1;
1280                 goto unlock;
1281         }
1282
1283         /* Avoid unnecessary overhead if debugfs is disabled */
1284         if (!list_empty(&hid->debug_list))
1285                 hid_dump_report(hid, type, data, size);
1286
1287         report = hid_get_report(report_enum, data);
1288
1289         if (!report) {
1290                 ret = -1;
1291                 goto unlock;
1292         }
1293
1294         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1295                 ret = hdrv->raw_event(hid, report, data, size);
1296                 if (ret != 0) {
1297                         ret = ret < 0 ? ret : 0;
1298                         goto unlock;
1299                 }
1300         }
1301
1302         ret = hid_report_raw_event(hid, type, data, size, interrupt);
1303
1304 unlock:
1305         up(&hid->driver_input_lock);
1306         return ret;
1307 }
1308 EXPORT_SYMBOL_GPL(hid_input_report);
1309
1310 static bool hid_match_one_id(struct hid_device *hdev,
1311                 const struct hid_device_id *id)
1312 {
1313         return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1314                 (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1315                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1316                 (id->product == HID_ANY_ID || id->product == hdev->product);
1317 }
1318
1319 const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1320                 const struct hid_device_id *id)
1321 {
1322         for (; id->bus; id++)
1323                 if (hid_match_one_id(hdev, id))
1324                         return id;
1325
1326         return NULL;
1327 }
1328
1329 static const struct hid_device_id hid_hiddev_list[] = {
1330         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1331         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1332         { }
1333 };
1334
1335 static bool hid_hiddev(struct hid_device *hdev)
1336 {
1337         return !!hid_match_id(hdev, hid_hiddev_list);
1338 }
1339
1340
1341 static ssize_t
1342 read_report_descriptor(struct file *filp, struct kobject *kobj,
1343                 struct bin_attribute *attr,
1344                 char *buf, loff_t off, size_t count)
1345 {
1346         struct device *dev = container_of(kobj, struct device, kobj);
1347         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1348
1349         if (off >= hdev->rsize)
1350                 return 0;
1351
1352         if (off + count > hdev->rsize)
1353                 count = hdev->rsize - off;
1354
1355         memcpy(buf, hdev->rdesc + off, count);
1356
1357         return count;
1358 }
1359
1360 static struct bin_attribute dev_bin_attr_report_desc = {
1361         .attr = { .name = "report_descriptor", .mode = 0444 },
1362         .read = read_report_descriptor,
1363         .size = HID_MAX_DESCRIPTOR_SIZE,
1364 };
1365
1366 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1367 {
1368         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1369                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1370                 "Multi-Axis Controller"
1371         };
1372         const char *type, *bus;
1373         char buf[64];
1374         unsigned int i;
1375         int len;
1376         int ret;
1377
1378         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1379                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1380         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1381                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1382         if (hdev->bus != BUS_USB)
1383                 connect_mask &= ~HID_CONNECT_HIDDEV;
1384         if (hid_hiddev(hdev))
1385                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1386
1387         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1388                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1389                 hdev->claimed |= HID_CLAIMED_INPUT;
1390
1391         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1392                         !hdev->hiddev_connect(hdev,
1393                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1394                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1395         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1396                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1397
1398         /* Drivers with the ->raw_event callback set are not required to connect
1399          * to any other listener. */
1400         if (!hdev->claimed && !hdev->driver->raw_event) {
1401                 hid_err(hdev, "device has no listeners, quitting\n");
1402                 return -ENODEV;
1403         }
1404
1405         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1406                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1407                 hdev->ff_init(hdev);
1408
1409         len = 0;
1410         if (hdev->claimed & HID_CLAIMED_INPUT)
1411                 len += sprintf(buf + len, "input");
1412         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1413                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1414                                 hdev->minor);
1415         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1416                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1417                                 ((struct hidraw *)hdev->hidraw)->minor);
1418
1419         type = "Device";
1420         for (i = 0; i < hdev->maxcollection; i++) {
1421                 struct hid_collection *col = &hdev->collection[i];
1422                 if (col->type == HID_COLLECTION_APPLICATION &&
1423                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1424                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1425                         type = types[col->usage & 0xffff];
1426                         break;
1427                 }
1428         }
1429
1430         switch (hdev->bus) {
1431         case BUS_USB:
1432                 bus = "USB";
1433                 break;
1434         case BUS_BLUETOOTH:
1435                 bus = "BLUETOOTH";
1436                 break;
1437         default:
1438                 bus = "<UNKNOWN>";
1439         }
1440
1441         ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1442         if (ret)
1443                 hid_warn(hdev,
1444                          "can't create sysfs report descriptor attribute err: %d\n", ret);
1445
1446         hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1447                  buf, bus, hdev->version >> 8, hdev->version & 0xff,
1448                  type, hdev->name, hdev->phys);
1449
1450         return 0;
1451 }
1452 EXPORT_SYMBOL_GPL(hid_connect);
1453
1454 void hid_disconnect(struct hid_device *hdev)
1455 {
1456         device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1457         if (hdev->claimed & HID_CLAIMED_INPUT)
1458                 hidinput_disconnect(hdev);
1459         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1460                 hdev->hiddev_disconnect(hdev);
1461         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1462                 hidraw_disconnect(hdev);
1463 }
1464 EXPORT_SYMBOL_GPL(hid_disconnect);
1465
1466 /*
1467  * A list of devices for which there is a specialized driver on HID bus.
1468  *
1469  * Please note that for multitouch devices (driven by hid-multitouch driver),
1470  * there is a proper autodetection and autoloading in place (based on presence
1471  * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1472  * as we are doing the right thing in hid_scan_usage().
1473  *
1474  * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1475  * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1476  * used as a driver. See hid_scan_report().
1477  */
1478 static const struct hid_device_id hid_have_special_driver[] = {
1479         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1480         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1481         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1482         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1483         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1484         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1485         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1486         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1487         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1488         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1489         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1490         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1491         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1492         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1493         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1494         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1495         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1496         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1497         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1498         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1499         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1500         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1501         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1502         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1503         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1504         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1505         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1506         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1507         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1508         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1509         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1510         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1511         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1512         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1513         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1514         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1515         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1516         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1517         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1518         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1519         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1520         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1521         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1522         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1523         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1524         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1525         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1526         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1527         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1528         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1529         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1530         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1531         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1532         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1533         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1534         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1535         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1536         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1537         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1538         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1539         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1540         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1541         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1542         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1543         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1544         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1545         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1546         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1547         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1548         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1549         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1550         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1551         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1552         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1553         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1554         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1555         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1556         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1557         { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1558         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1559         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1560         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1561         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1562         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1563         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1564         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1565         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1566         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1567         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1568         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1569         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1570         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1571         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1572         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1573         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1574         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1575         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1576         { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1577         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1578         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1579         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1580         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1581         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1582         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1583         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1584         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1585         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1586         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1587         { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1588         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1589         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1590         { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1591         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1592         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1593         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1594         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1595         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1596         { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1597 #if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
1598         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1599 #endif
1600         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1601         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1602         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1603         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1604         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1605         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1606         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1607         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1608         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1609         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1610         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1611         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1612         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1613         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1614         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1615         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1616         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1617         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1618         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1619         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1620         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1621         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1622         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1623         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1624         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1625 #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1626         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1627         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1628 #endif
1629         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1630         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1631         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1632         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1633         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1634         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1635         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1636         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1637         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1638         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1639         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1640         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1641         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1642         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1643         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1644         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1645         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1646         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1647         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1648         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1649         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1650         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1651         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1652         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1653         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1654         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1655         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1656         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1657         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1658         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1659         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1660         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1661         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1662         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1663         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1664         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1665         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1666         { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1667 #if IS_ENABLED(CONFIG_HID_ROCCAT)
1668         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1669         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1670         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1671         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1672         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
1673         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1674         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
1675         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1676         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1677         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1678 #endif
1679         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1680         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1681         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1682         { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1683         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1684         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1685         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1686         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1687         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1688         { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
1689         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1690         { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
1691         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1692         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1693         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1694         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1695         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1696         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1697         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1698         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1699         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1700         { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1701         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1702         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1703         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1704         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1705         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1706         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1707         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1708         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1709         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1710         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1711         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1712         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1713         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1714         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1715         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1716         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1717         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1718         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
1719         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1720         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1721         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1722         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1723         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1724         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1725         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1726         { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1727         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1728         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1729         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1730
1731         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1732         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1733         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1734         { }
1735 };
1736
1737 struct hid_dynid {
1738         struct list_head list;
1739         struct hid_device_id id;
1740 };
1741
1742 /**
1743  * store_new_id - add a new HID device ID to this driver and re-probe devices
1744  * @driver: target device driver
1745  * @buf: buffer for scanning device ID data
1746  * @count: input size
1747  *
1748  * Adds a new dynamic hid device ID to this driver,
1749  * and causes the driver to probe for all devices again.
1750  */
1751 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1752                 size_t count)
1753 {
1754         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1755         struct hid_dynid *dynid;
1756         __u32 bus, vendor, product;
1757         unsigned long driver_data = 0;
1758         int ret;
1759
1760         ret = sscanf(buf, "%x %x %x %lx",
1761                         &bus, &vendor, &product, &driver_data);
1762         if (ret < 3)
1763                 return -EINVAL;
1764
1765         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1766         if (!dynid)
1767                 return -ENOMEM;
1768
1769         dynid->id.bus = bus;
1770         dynid->id.group = HID_GROUP_ANY;
1771         dynid->id.vendor = vendor;
1772         dynid->id.product = product;
1773         dynid->id.driver_data = driver_data;
1774
1775         spin_lock(&hdrv->dyn_lock);
1776         list_add_tail(&dynid->list, &hdrv->dyn_list);
1777         spin_unlock(&hdrv->dyn_lock);
1778
1779         ret = driver_attach(&hdrv->driver);
1780
1781         return ret ? : count;
1782 }
1783 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1784
1785 static void hid_free_dynids(struct hid_driver *hdrv)
1786 {
1787         struct hid_dynid *dynid, *n;
1788
1789         spin_lock(&hdrv->dyn_lock);
1790         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1791                 list_del(&dynid->list);
1792                 kfree(dynid);
1793         }
1794         spin_unlock(&hdrv->dyn_lock);
1795 }
1796
1797 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1798                 struct hid_driver *hdrv)
1799 {
1800         struct hid_dynid *dynid;
1801
1802         spin_lock(&hdrv->dyn_lock);
1803         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1804                 if (hid_match_one_id(hdev, &dynid->id)) {
1805                         spin_unlock(&hdrv->dyn_lock);
1806                         return &dynid->id;
1807                 }
1808         }
1809         spin_unlock(&hdrv->dyn_lock);
1810
1811         return hid_match_id(hdev, hdrv->id_table);
1812 }
1813
1814 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1815 {
1816         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1817         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1818
1819         return hid_match_device(hdev, hdrv) != NULL;
1820 }
1821
1822 static int hid_device_probe(struct device *dev)
1823 {
1824         struct hid_driver *hdrv = container_of(dev->driver,
1825                         struct hid_driver, driver);
1826         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1827         const struct hid_device_id *id;
1828         int ret = 0;
1829
1830         if (down_interruptible(&hdev->driver_lock))
1831                 return -EINTR;
1832         if (down_interruptible(&hdev->driver_input_lock)) {
1833                 ret = -EINTR;
1834                 goto unlock_driver_lock;
1835         }
1836         hdev->io_started = false;
1837
1838         if (!hdev->driver) {
1839                 id = hid_match_device(hdev, hdrv);
1840                 if (id == NULL) {
1841                         ret = -ENODEV;
1842                         goto unlock;
1843                 }
1844
1845                 hdev->driver = hdrv;
1846                 if (hdrv->probe) {
1847                         ret = hdrv->probe(hdev, id);
1848                 } else { /* default probe */
1849                         ret = hid_open_report(hdev);
1850                         if (!ret)
1851                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1852                 }
1853                 if (ret) {
1854                         hid_close_report(hdev);
1855                         hdev->driver = NULL;
1856                 }
1857         }
1858 unlock:
1859         if (!hdev->io_started)
1860                 up(&hdev->driver_input_lock);
1861 unlock_driver_lock:
1862         up(&hdev->driver_lock);
1863         return ret;
1864 }
1865
1866 static int hid_device_remove(struct device *dev)
1867 {
1868         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1869         struct hid_driver *hdrv;
1870         int ret = 0;
1871
1872         if (down_interruptible(&hdev->driver_lock))
1873                 return -EINTR;
1874         if (down_interruptible(&hdev->driver_input_lock)) {
1875                 ret = -EINTR;
1876                 goto unlock_driver_lock;
1877         }
1878         hdev->io_started = false;
1879
1880         hdrv = hdev->driver;
1881         if (hdrv) {
1882                 if (hdrv->remove)
1883                         hdrv->remove(hdev);
1884                 else /* default remove */
1885                         hid_hw_stop(hdev);
1886                 hid_close_report(hdev);
1887                 hdev->driver = NULL;
1888         }
1889
1890         if (!hdev->io_started)
1891                 up(&hdev->driver_input_lock);
1892 unlock_driver_lock:
1893         up(&hdev->driver_lock);
1894         return ret;
1895 }
1896
1897 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
1898                              char *buf)
1899 {
1900         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1901         int len;
1902
1903         len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
1904                        hdev->bus, hdev->group, hdev->vendor, hdev->product);
1905
1906         return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
1907 }
1908
1909 static struct device_attribute hid_dev_attrs[] = {
1910         __ATTR_RO(modalias),
1911         __ATTR_NULL,
1912 };
1913
1914 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1915 {
1916         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1917
1918         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
1919                         hdev->bus, hdev->vendor, hdev->product))
1920                 return -ENOMEM;
1921
1922         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
1923                 return -ENOMEM;
1924
1925         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
1926                 return -ENOMEM;
1927
1928         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
1929                 return -ENOMEM;
1930
1931         if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
1932                            hdev->bus, hdev->group, hdev->vendor, hdev->product))
1933                 return -ENOMEM;
1934
1935         return 0;
1936 }
1937
1938 static struct bus_type hid_bus_type = {
1939         .name           = "hid",
1940         .dev_attrs      = hid_dev_attrs,
1941         .match          = hid_bus_match,
1942         .probe          = hid_device_probe,
1943         .remove         = hid_device_remove,
1944         .uevent         = hid_uevent,
1945 };
1946
1947 /* a list of devices that shouldn't be handled by HID core at all */
1948 static const struct hid_device_id hid_ignore_list[] = {
1949         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
1950         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
1951         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
1952         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
1953         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
1954         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
1955         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
1956         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
1957         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
1958         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
1959         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
1960         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
1961         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
1962         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
1963         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
1964         { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
1965         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
1966         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
1967         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
1968         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
1969         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
1970         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
1971         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
1972         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
1973         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
1974         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
1975         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
1976         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
1977         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
1978         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
1979         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
1980         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
1981         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
1982         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
1983         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
1984         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
1985         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
1986         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
1987         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
1988         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
1989         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
1990         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
1991         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
1992         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
1993         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
1994         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
1995         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
1996         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
1997         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
1998         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
1999         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2000         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2001         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2002         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2003         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2004         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2005         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2006         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2007         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2008         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2009         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2010         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2011         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2012         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2013         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2014         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2015         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2016         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2017         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2018         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2019         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2020         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2021         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2022         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2023         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2024         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2025         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2026         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2027         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2028         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2029         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2030         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2031         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2032         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2033         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2034         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2035         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2036         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2037         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2038         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2039         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2040         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2041         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2042         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2043         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2044         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2045         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2046         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2047         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2048         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2049         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2050         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2051         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2052         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2053         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2054         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2055         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2056         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2057         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2058         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2059         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2060         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2061         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2062         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2063         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2064         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2065         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2066         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2067         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2068         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2069         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2070         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2071         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2072         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2073         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2074         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2075         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2076         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2077         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2078         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2079         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2080         { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2081         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2082         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2083         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2084         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2085         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2086         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2087         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2088         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2089         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2090         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2091         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2092         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2093         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2094         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2095         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2096         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2097         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2098         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2099         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2100         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2101         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2102 #if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2103         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2104         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2105         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2106         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2107         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2108         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2109         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2110         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2111 #endif
2112         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2113         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2114         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2115         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2116         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2117         { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
2118         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2119         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2120         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2121         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2122         { }
2123 };
2124
2125 /**
2126  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2127  *
2128  * There are composite devices for which we want to ignore only a certain
2129  * interface. This is a list of devices for which only the mouse interface will
2130  * be ignored. This allows a dedicated driver to take care of the interface.
2131  */
2132 static const struct hid_device_id hid_mouse_ignore_list[] = {
2133         /* appletouch driver */
2134         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2135         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2136         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2137         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2138         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2139         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2140         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2141         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2142         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2143         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2144         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2145         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2146         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2147         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2148         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2149         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2150         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2151         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2152         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2153         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2154         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2155         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2156         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2157         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2158         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2159         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2160         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2161         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2162         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2163         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2164         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2165         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2166         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2167         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2168         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2169         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2170         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2171         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2172         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2173         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2174         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2175         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2176         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2177         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2178         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2179         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2180         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2181         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2182         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2183         { }
2184 };
2185
2186 bool hid_ignore(struct hid_device *hdev)
2187 {
2188         if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2189                 return false;
2190         if (hdev->quirks & HID_QUIRK_IGNORE)
2191                 return true;
2192
2193         switch (hdev->vendor) {
2194         case USB_VENDOR_ID_CODEMERCS:
2195                 /* ignore all Code Mercenaries IOWarrior devices */
2196                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2197                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2198                         return true;
2199                 break;
2200         case USB_VENDOR_ID_LOGITECH:
2201                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2202                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2203                         return true;
2204                 /*
2205                  * The Keene FM transmitter USB device has the same USB ID as
2206                  * the Logitech AudioHub Speaker, but it should ignore the hid.
2207                  * Check if the name is that of the Keene device.
2208                  * For reference: the name of the AudioHub is
2209                  * "HOLTEK  AudioHub Speaker".
2210                  */
2211                 if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2212                         !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2213                                 return true;
2214                 break;
2215         case USB_VENDOR_ID_SOUNDGRAPH:
2216                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2217                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2218                         return true;
2219                 break;
2220         case USB_VENDOR_ID_HANWANG:
2221                 if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2222                     hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2223                         return true;
2224                 break;
2225         case USB_VENDOR_ID_JESS:
2226                 if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2227                                 hdev->type == HID_TYPE_USBNONE)
2228                         return true;
2229                 break;
2230         case USB_VENDOR_ID_DWAV:
2231                 /* These are handled by usbtouchscreen. hdev->type is probably
2232                  * HID_TYPE_USBNONE, but we say !HID_TYPE_USBMOUSE to match
2233                  * usbtouchscreen. */
2234                 if ((hdev->product == USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER ||
2235                      hdev->product == USB_DEVICE_ID_DWAV_TOUCHCONTROLLER) &&
2236                     hdev->type != HID_TYPE_USBMOUSE)
2237                         return true;
2238                 break;
2239         case USB_VENDOR_ID_VELLEMAN:
2240                 /* These are not HID devices.  They are handled by comedi. */
2241                 if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2242                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2243                     (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2244                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2245                         return true;
2246                 break;
2247         case USB_VENDOR_ID_ATMEL_V_USB:
2248                 /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2249                  * it has the same USB ID as many Atmel V-USB devices. This
2250                  * usb radio is handled by radio-ma901.c driver so we want
2251                  * ignore the hid. Check the name, bus, product and ignore
2252                  * if we have MA901 usb radio.
2253                  */
2254                 if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2255                         hdev->bus == BUS_USB &&
2256                         strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2257                         return true;
2258                 break;
2259         }
2260
2261         if (hdev->type == HID_TYPE_USBMOUSE &&
2262                         hid_match_id(hdev, hid_mouse_ignore_list))
2263                 return true;
2264
2265         return !!hid_match_id(hdev, hid_ignore_list);
2266 }
2267 EXPORT_SYMBOL_GPL(hid_ignore);
2268
2269 int hid_add_device(struct hid_device *hdev)
2270 {
2271         static atomic_t id = ATOMIC_INIT(0);
2272         int ret;
2273
2274         if (WARN_ON(hdev->status & HID_STAT_ADDED))
2275                 return -EBUSY;
2276
2277         /* we need to kill them here, otherwise they will stay allocated to
2278          * wait for coming driver */
2279         if (hid_ignore(hdev))
2280                 return -ENODEV;
2281
2282         /*
2283          * Read the device report descriptor once and use as template
2284          * for the driver-specific modifications.
2285          */
2286         ret = hdev->ll_driver->parse(hdev);
2287         if (ret)
2288                 return ret;
2289         if (!hdev->dev_rdesc)
2290                 return -ENODEV;
2291
2292         /*
2293          * Scan generic devices for group information
2294          */
2295         if (hid_ignore_special_drivers ||
2296             !hid_match_id(hdev, hid_have_special_driver)) {
2297                 ret = hid_scan_report(hdev);
2298                 if (ret)
2299                         hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2300         }
2301
2302         /* XXX hack, any other cleaner solution after the driver core
2303          * is converted to allow more than 20 bytes as the device name? */
2304         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2305                      hdev->vendor, hdev->product, atomic_inc_return(&id));
2306
2307         hid_debug_register(hdev, dev_name(&hdev->dev));
2308         ret = device_add(&hdev->dev);
2309         if (!ret)
2310                 hdev->status |= HID_STAT_ADDED;
2311         else
2312                 hid_debug_unregister(hdev);
2313
2314         return ret;
2315 }
2316 EXPORT_SYMBOL_GPL(hid_add_device);
2317
2318 /**
2319  * hid_allocate_device - allocate new hid device descriptor
2320  *
2321  * Allocate and initialize hid device, so that hid_destroy_device might be
2322  * used to free it.
2323  *
2324  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2325  * error value.
2326  */
2327 struct hid_device *hid_allocate_device(void)
2328 {
2329         struct hid_device *hdev;
2330         int ret = -ENOMEM;
2331
2332         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2333         if (hdev == NULL)
2334                 return ERR_PTR(ret);
2335
2336         device_initialize(&hdev->dev);
2337         hdev->dev.release = hid_device_release;
2338         hdev->dev.bus = &hid_bus_type;
2339
2340         hid_close_report(hdev);
2341
2342         init_waitqueue_head(&hdev->debug_wait);
2343         INIT_LIST_HEAD(&hdev->debug_list);
2344         mutex_init(&hdev->debug_list_lock);
2345         sema_init(&hdev->driver_lock, 1);
2346         sema_init(&hdev->driver_input_lock, 1);
2347
2348         return hdev;
2349 }
2350 EXPORT_SYMBOL_GPL(hid_allocate_device);
2351
2352 static void hid_remove_device(struct hid_device *hdev)
2353 {
2354         if (hdev->status & HID_STAT_ADDED) {
2355                 device_del(&hdev->dev);
2356                 hid_debug_unregister(hdev);
2357                 hdev->status &= ~HID_STAT_ADDED;
2358         }
2359         kfree(hdev->dev_rdesc);
2360         hdev->dev_rdesc = NULL;
2361         hdev->dev_rsize = 0;
2362 }
2363
2364 /**
2365  * hid_destroy_device - free previously allocated device
2366  *
2367  * @hdev: hid device
2368  *
2369  * If you allocate hid_device through hid_allocate_device, you should ever
2370  * free by this function.
2371  */
2372 void hid_destroy_device(struct hid_device *hdev)
2373 {
2374         hid_remove_device(hdev);
2375         put_device(&hdev->dev);
2376 }
2377 EXPORT_SYMBOL_GPL(hid_destroy_device);
2378
2379 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2380                 const char *mod_name)
2381 {
2382         int ret;
2383
2384         hdrv->driver.name = hdrv->name;
2385         hdrv->driver.bus = &hid_bus_type;
2386         hdrv->driver.owner = owner;
2387         hdrv->driver.mod_name = mod_name;
2388
2389         INIT_LIST_HEAD(&hdrv->dyn_list);
2390         spin_lock_init(&hdrv->dyn_lock);
2391
2392         ret = driver_register(&hdrv->driver);
2393         if (ret)
2394                 return ret;
2395
2396         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2397         if (ret)
2398                 driver_unregister(&hdrv->driver);
2399
2400         return ret;
2401 }
2402 EXPORT_SYMBOL_GPL(__hid_register_driver);
2403
2404 void hid_unregister_driver(struct hid_driver *hdrv)
2405 {
2406         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2407         driver_unregister(&hdrv->driver);
2408         hid_free_dynids(hdrv);
2409 }
2410 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2411
2412 int hid_check_keys_pressed(struct hid_device *hid)
2413 {
2414         struct hid_input *hidinput;
2415         int i;
2416
2417         if (!(hid->claimed & HID_CLAIMED_INPUT))
2418                 return 0;
2419
2420         list_for_each_entry(hidinput, &hid->inputs, list) {
2421                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2422                         if (hidinput->input->key[i])
2423                                 return 1;
2424         }
2425
2426         return 0;
2427 }
2428
2429 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2430
2431 static int __init hid_init(void)
2432 {
2433         int ret;
2434
2435         if (hid_debug)
2436                 pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2437                         "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2438
2439         ret = bus_register(&hid_bus_type);
2440         if (ret) {
2441                 pr_err("can't register hid bus\n");
2442                 goto err;
2443         }
2444
2445         ret = hidraw_init();
2446         if (ret)
2447                 goto err_bus;
2448
2449         hid_debug_init();
2450
2451         return 0;
2452 err_bus:
2453         bus_unregister(&hid_bus_type);
2454 err:
2455         return ret;
2456 }
2457
2458 static void __exit hid_exit(void)
2459 {
2460         hid_debug_exit();
2461         hidraw_exit();
2462         bus_unregister(&hid_bus_type);
2463 }
2464
2465 module_init(hid_init);
2466 module_exit(hid_exit);
2467
2468 MODULE_AUTHOR("Andreas Gal");
2469 MODULE_AUTHOR("Vojtech Pavlik");
2470 MODULE_AUTHOR("Jiri Kosina");
2471 MODULE_LICENSE(DRIVER_LICENSE);
2472