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 0;
 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_input_usage(struct hid_parser *parser, u32 usage)
 681 {
 682         struct hid_device *hid = parser->device;
 683
 684         if (usage == HID_DG_CONTACTID)
 685                 hid->group = HID_GROUP_MULTITOUCH;
 686 }
 687
 688 static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage)
 689 {
 690         if (usage == 0xff0000c5 && parser->global.report_count == 256 &&
 691             parser->global.report_size == 8)
 692                 parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;
 693 }
 694
 695 static void hid_scan_collection(struct hid_parser *parser, unsigned type)
 696 {
 697         struct hid_device *hid = parser->device;
 698
 699         if (((parser->global.usage_page << 16) == HID_UP_SENSOR) &&
 700             type == HID_COLLECTION_PHYSICAL)
 701                 hid->group = HID_GROUP_SENSOR_HUB;
 702 }
 703
 704 static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)
 705 {
 706         __u32 data;
 707         int i;
 708
 709         data = item_udata(item);
 710
 711         switch (item->tag) {
 712         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 713                 hid_scan_collection(parser, data & 0xff);
 714                 break;
 715         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 716                 break;
 717         case HID_MAIN_ITEM_TAG_INPUT:
 718                 for (i = 0; i < parser->local.usage_index; i++)
 719                         hid_scan_input_usage(parser, parser->local.usage[i]);
 720                 break;
 721         case HID_MAIN_ITEM_TAG_OUTPUT:
 722                 break;
 723         case HID_MAIN_ITEM_TAG_FEATURE:
 724                 for (i = 0; i < parser->local.usage_index; i++)
 725                         hid_scan_feature_usage(parser, parser->local.usage[i]);
 726                 break;
 727         }
 728
 729         /* Reset the local parser environment */
 730         memset(&parser->local, 0, sizeof(parser->local));
 731
 732         return 0;
 733 }
 734
 735 /*
 736  * Scan a report descriptor before the device is added to the bus.
 737  * Sets device groups and other properties that determine what driver
 738  * to load.
 739  */
 740 static int hid_scan_report(struct hid_device *hid)
 741 {
 742         struct hid_parser *parser;
 743         struct hid_item item;
 744         __u8 *start = hid->dev_rdesc;
 745         __u8 *end = start + hid->dev_rsize;
 746         static int (*dispatch_type[])(struct hid_parser *parser,
 747                                       struct hid_item *item) = {
 748                 hid_scan_main,
 749                 hid_parser_global,
 750                 hid_parser_local,
 751                 hid_parser_reserved
 752         };
 753
 754         parser = vzalloc(sizeof(struct hid_parser));
 755         if (!parser)
 756                 return -ENOMEM;
 757
 758         parser->device = hid;
 759         hid->group = HID_GROUP_GENERIC;
 760
 761         /*
 762          * The parsing is simpler than the one in hid_open_report() as we should
 763          * be robust against hid errors. Those errors will be raised by
 764          * hid_open_report() anyway.
 765          */
 766         while ((start = fetch_item(start, end, &item)) != NULL)
 767                 dispatch_type[item.type](parser, &item);
 768
 769         /*
 770          * Handle special flags set during scanning.
 771          */
 772         if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) &&
 773             (hid->group == HID_GROUP_MULTITOUCH))
 774                 hid->group = HID_GROUP_MULTITOUCH_WIN_8;
 775
 776         vfree(parser);
 777         return 0;
 778 }
 779
 780 /**
 781  * hid_parse_report - parse device report
 782  *
 783  * @device: hid device
 784  * @start: report start
 785  * @size: report size
 786  *
 787  * Allocate the device report as read by the bus driver. This function should
 788  * only be called from parse() in ll drivers.
 789  */
 790 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
 791 {
 792         hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
 793         if (!hid->dev_rdesc)
 794                 return -ENOMEM;
 795         hid->dev_rsize = size;
 796         return 0;
 797 }
 798 EXPORT_SYMBOL_GPL(hid_parse_report);
 799
 800 /**
 801  * hid_open_report - open a driver-specific device report
 802  *
 803  * @device: hid device
 804  *
 805  * Parse a report description into a hid_device structure. Reports are
 806  * enumerated, fields are attached to these reports.
 807  * 0 returned on success, otherwise nonzero error value.
 808  *
 809  * This function (or the equivalent hid_parse() macro) should only be
 810  * called from probe() in drivers, before starting the device.
 811  */
 812 int hid_open_report(struct hid_device *device)
 813 {
 814         struct hid_parser *parser;
 815         struct hid_item item;
 816         unsigned int size;
 817         __u8 *start;
 818         __u8 *buf;
 819         __u8 *end;
 820         int ret;
 821         static int (*dispatch_type[])(struct hid_parser *parser,
 822                                       struct hid_item *item) = {
 823                 hid_parser_main,
 824                 hid_parser_global,
 825                 hid_parser_local,
 826                 hid_parser_reserved
 827         };
 828
 829         if (WARN_ON(device->status & HID_STAT_PARSED))
 830                 return -EBUSY;
 831
 832         start = device->dev_rdesc;
 833         if (WARN_ON(!start))
 834                 return -ENODEV;
 835         size = device->dev_rsize;
 836
 837         buf = kmemdup(start, size, GFP_KERNEL);
 838         if (buf == NULL)
 839                 return -ENOMEM;
 840
 841         if (device->driver->report_fixup)
 842                 start = device->driver->report_fixup(device, buf, &size);
 843         else
 844                 start = buf;
 845
 846         start = kmemdup(start, size, GFP_KERNEL);
 847         kfree(buf);
 848         if (start == NULL)
 849                 return -ENOMEM;
 850
 851         device->rdesc = start;
 852         device->rsize = size;
 853
 854         parser = vzalloc(sizeof(struct hid_parser));
 855         if (!parser) {
 856                 ret = -ENOMEM;
 857                 goto err;
 858         }
 859
 860         parser->device = device;
 861
 862         end = start + size;
 863
 864         device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
 865                                      sizeof(struct hid_collection), GFP_KERNEL);
 866         if (!device->collection) {
 867                 ret = -ENOMEM;
 868                 goto err;
 869         }
 870         device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
 871
 872         ret = -EINVAL;
 873         while ((start = fetch_item(start, end, &item)) != NULL) {
 874
 875                 if (item.format != HID_ITEM_FORMAT_SHORT) {
 876                         hid_err(device, "unexpected long global item\n");
 877                         goto err;
 878                 }
 879
 880                 if (dispatch_type[item.type](parser, &item)) {
 881                         hid_err(device, "item %u %u %u %u parsing failed\n",
 882                                 item.format, (unsigned)item.size,
 883                                 (unsigned)item.type, (unsigned)item.tag);
 884                         goto err;
 885                 }
 886
 887                 if (start == end) {
 888                         if (parser->collection_stack_ptr) {
 889                                 hid_err(device, "unbalanced collection at end of report description\n");
 890                                 goto err;
 891                         }
 892                         if (parser->local.delimiter_depth) {
 893                                 hid_err(device, "unbalanced delimiter at end of report description\n");
 894                                 goto err;
 895                         }
 896                         vfree(parser);
 897                         device->status |= HID_STAT_PARSED;
 898                         return 0;
 899                 }
 900         }
 901
 902         hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
 903 err:
 904         vfree(parser);
 905         hid_close_report(device);
 906         return ret;
 907 }
 908 EXPORT_SYMBOL_GPL(hid_open_report);
 909
 910 /*
 911  * Convert a signed n-bit integer to signed 32-bit integer. Common
 912  * cases are done through the compiler, the screwed things has to be
 913  * done by hand.
 914  */
 915
 916 static s32 snto32(__u32 value, unsigned n)
 917 {
 918         switch (n) {
 919         case 8:  return ((__s8)value);
 920         case 16: return ((__s16)value);
 921         case 32: return ((__s32)value);
 922         }
 923         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
 924 }
 925
 926 s32 hid_snto32(__u32 value, unsigned n)
 927 {
 928         return snto32(value, n);
 929 }
 930 EXPORT_SYMBOL_GPL(hid_snto32);
 931
 932 /*
 933  * Convert a signed 32-bit integer to a signed n-bit integer.
 934  */
 935
 936 static u32 s32ton(__s32 value, unsigned n)
 937 {
 938         s32 a = value >> (n - 1);
 939         if (a && a != -1)
 940                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
 941         return value & ((1 << n) - 1);
 942 }
 943
 944 /*
 945  * Extract/implement a data field from/to a little endian report (bit array).
 946  *
 947  * Code sort-of follows HID spec:
 948  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
 949  *
 950  * While the USB HID spec allows unlimited length bit fields in "report
 951  * descriptors", most devices never use more than 16 bits.
 952  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
 953  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
 954  */
 955
 956 static __u32 extract(const struct hid_device *hid, __u8 *report,
 957                      unsigned offset, unsigned n)
 958 {
 959         u64 x;
 960
 961         if (n > 32)
 962                 hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
 963                          n, current->comm);
 964
 965         report += offset >> 3;  /* adjust byte index */
 966         offset &= 7;            /* now only need bit offset into one byte */
 967         x = get_unaligned_le64(report);
 968         x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
 969         return (u32) x;
 970 }
 971
 972 /*
 973  * "implement" : set bits in a little endian bit stream.
 974  * Same concepts as "extract" (see comments above).
 975  * The data mangled in the bit stream remains in little endian
 976  * order the whole time. It make more sense to talk about
 977  * endianness of register values by considering a register
 978  * a "cached" copy of the little endiad bit stream.
 979  */
 980 static void implement(const struct hid_device *hid, __u8 *report,
 981                       unsigned offset, unsigned n, __u32 value)
 982 {
 983         u64 x;
 984         u64 m = (1ULL << n) - 1;
 985
 986         if (n > 32)
 987                 hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
 988                          __func__, n, current->comm);
 989
 990         if (value > m)
 991                 hid_warn(hid, "%s() called with too large value %d! (%s)\n",
 992                          __func__, value, current->comm);
 993         WARN_ON(value > m);
 994         value &= m;
 995
 996         report += offset >> 3;
 997         offset &= 7;
 998
 999         x = get_unaligned_le64(report);
1000         x &= ~(m << offset);
1001         x |= ((u64)value) << offset;
1002         put_unaligned_le64(x, report);
1003 }
1004
1005 /*
1006  * Search an array for a value.
1007  */
1008
1009 static int search(__s32 *array, __s32 value, unsigned n)
1010 {
1011         while (n--) {
1012                 if (*array++ == value)
1013                         return 0;
1014         }
1015         return -1;
1016 }
1017
1018 /**
1019  * hid_match_report - check if driver's raw_event should be called
1020  *
1021  * @hid: hid device
1022  * @report_type: type to match against
1023  *
1024  * compare hid->driver->report_table->report_type to report->type
1025  */
1026 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
1027 {
1028         const struct hid_report_id *id = hid->driver->report_table;
1029
1030         if (!id) /* NULL means all */
1031                 return 1;
1032
1033         for (; id->report_type != HID_TERMINATOR; id++)
1034                 if (id->report_type == HID_ANY_ID ||
1035                                 id->report_type == report->type)
1036                         return 1;
1037         return 0;
1038 }
1039
1040 /**
1041  * hid_match_usage - check if driver's event should be called
1042  *
1043  * @hid: hid device
1044  * @usage: usage to match against
1045  *
1046  * compare hid->driver->usage_table->usage_{type,code} to
1047  * usage->usage_{type,code}
1048  */
1049 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1050 {
1051         const struct hid_usage_id *id = hid->driver->usage_table;
1052
1053         if (!id) /* NULL means all */
1054                 return 1;
1055
1056         for (; id->usage_type != HID_ANY_ID - 1; id++)
1057                 if ((id->usage_hid == HID_ANY_ID ||
1058                                 id->usage_hid == usage->hid) &&
1059                                 (id->usage_type == HID_ANY_ID ||
1060                                 id->usage_type == usage->type) &&
1061                                 (id->usage_code == HID_ANY_ID ||
1062                                  id->usage_code == usage->code))
1063                         return 1;
1064         return 0;
1065 }
1066
1067 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1068                 struct hid_usage *usage, __s32 value, int interrupt)
1069 {
1070         struct hid_driver *hdrv = hid->driver;
1071         int ret;
1072
1073         if (!list_empty(&hid->debug_list))
1074                 hid_dump_input(hid, usage, value);
1075
1076         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1077                 ret = hdrv->event(hid, field, usage, value);
1078                 if (ret != 0) {
1079                         if (ret < 0)
1080                                 hid_err(hid, "%s's event failed with %d\n",
1081                                                 hdrv->name, ret);
1082                         return;
1083                 }
1084         }
1085
1086         if (hid->claimed & HID_CLAIMED_INPUT)
1087                 hidinput_hid_event(hid, field, usage, value);
1088         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1089                 hid->hiddev_hid_event(hid, field, usage, value);
1090 }
1091
1092 /*
1093  * Analyse a received field, and fetch the data from it. The field
1094  * content is stored for next report processing (we do differential
1095  * reporting to the layer).
1096  */
1097
1098 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1099                             __u8 *data, int interrupt)
1100 {
1101         unsigned n;
1102         unsigned count = field->report_count;
1103         unsigned offset = field->report_offset;
1104         unsigned size = field->report_size;
1105         __s32 min = field->logical_minimum;
1106         __s32 max = field->logical_maximum;
1107         __s32 *value;
1108
1109         value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1110         if (!value)
1111                 return;
1112
1113         for (n = 0; n < count; n++) {
1114
1115                 value[n] = min < 0 ?
1116                         snto32(extract(hid, data, offset + n * size, size),
1117                                size) :
1118                         extract(hid, data, offset + n * size, size);
1119
1120                 /* Ignore report if ErrorRollOver */
1121                 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1122                     value[n] >= min && value[n] <= max &&
1123                     field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1124                         goto exit;
1125         }
1126
1127         for (n = 0; n < count; n++) {
1128
1129                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1130                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1131                         continue;
1132                 }
1133
1134                 if (field->value[n] >= min && field->value[n] <= max
1135                         && field->usage[field->value[n] - min].hid
1136                         && search(value, field->value[n], count))
1137                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1138
1139                 if (value[n] >= min && value[n] <= max
1140                         && field->usage[value[n] - min].hid
1141                         && search(field->value, value[n], count))
1142                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1143         }
1144
1145         memcpy(field->value, value, count * sizeof(__s32));
1146 exit:
1147         kfree(value);
1148 }
1149
1150 /*
1151  * Output the field into the report.
1152  */
1153
1154 static void hid_output_field(const struct hid_device *hid,
1155                              struct hid_field *field, __u8 *data)
1156 {
1157         unsigned count = field->report_count;
1158         unsigned offset = field->report_offset;
1159         unsigned size = field->report_size;
1160         unsigned n;
1161
1162         for (n = 0; n < count; n++) {
1163                 if (field->logical_minimum < 0) /* signed values */
1164                         implement(hid, data, offset + n * size, size,
1165                                   s32ton(field->value[n], size));
1166                 else                            /* unsigned values */
1167                         implement(hid, data, offset + n * size, size,
1168                                   field->value[n]);
1169         }
1170 }
1171
1172 /*
1173  * Create a report. 'data' has to be allocated using
1174  * hid_alloc_report_buf() so that it has proper size.
1175  */
1176
1177 void hid_output_report(struct hid_report *report, __u8 *data)
1178 {
1179         unsigned n;
1180
1181         if (report->id > 0)
1182                 *data++ = report->id;
1183
1184         memset(data, 0, ((report->size - 1) >> 3) + 1);
1185         for (n = 0; n < report->maxfield; n++)
1186                 hid_output_field(report->device, report->field[n], data);
1187 }
1188 EXPORT_SYMBOL_GPL(hid_output_report);
1189
1190 /*
1191  * Allocator for buffer that is going to be passed to hid_output_report()
1192  */
1193 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
1194 {
1195         /*
1196          * 7 extra bytes are necessary to achieve proper functionality
1197          * of implement() working on 8 byte chunks
1198          */
1199
1200         int len = ((report->size - 1) >> 3) + 1 + (report->id > 0) + 7;
1201
1202         return kmalloc(len, flags);
1203 }
1204 EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
1205
1206 /*
1207  * Set a field value. The report this field belongs to has to be
1208  * created and transferred to the device, to set this value in the
1209  * device.
1210  */
1211
1212 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1213 {
1214         unsigned size = field->report_size;
1215
1216         hid_dump_input(field->report->device, field->usage + offset, value);
1217
1218         if (offset >= field->report_count) {
1219                 hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1220                                 offset, field->report_count);
1221                 return -1;
1222         }
1223         if (field->logical_minimum < 0) {
1224                 if (value != snto32(s32ton(value, size), size)) {
1225                         hid_err(field->report->device, "value %d is out of range\n", value);
1226                         return -1;
1227                 }
1228         }
1229         field->value[offset] = value;
1230         return 0;
1231 }
1232 EXPORT_SYMBOL_GPL(hid_set_field);
1233
1234 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1235                 const u8 *data)
1236 {
1237         struct hid_report *report;
1238         unsigned int n = 0;     /* Normally report number is 0 */
1239
1240         /* Device uses numbered reports, data[0] is report number */
1241         if (report_enum->numbered)
1242                 n = *data;
1243
1244         report = report_enum->report_id_hash[n];
1245         if (report == NULL)
1246                 dbg_hid("undefined report_id %u received\n", n);
1247
1248         return report;
1249 }
1250
1251 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1252                 int interrupt)
1253 {
1254         struct hid_report_enum *report_enum = hid->report_enum + type;
1255         struct hid_report *report;
1256         struct hid_driver *hdrv;
1257         unsigned int a;
1258         int rsize, csize = size;
1259         u8 *cdata = data;
1260         int ret = 0;
1261
1262         report = hid_get_report(report_enum, data);
1263         if (!report)
1264                 goto out;
1265
1266         if (report_enum->numbered) {
1267                 cdata++;
1268                 csize--;
1269         }
1270
1271         rsize = ((report->size - 1) >> 3) + 1;
1272
1273         if (rsize > HID_MAX_BUFFER_SIZE)
1274                 rsize = HID_MAX_BUFFER_SIZE;
1275
1276         if (csize < rsize) {
1277                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1278                                 csize, rsize);
1279                 memset(cdata + csize, 0, rsize - csize);
1280         }
1281
1282         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1283                 hid->hiddev_report_event(hid, report);
1284         if (hid->claimed & HID_CLAIMED_HIDRAW) {
1285                 ret = hidraw_report_event(hid, data, size);
1286                 if (ret)
1287                         goto out;
1288         }
1289
1290         if (hid->claimed != HID_CLAIMED_HIDRAW) {
1291                 for (a = 0; a < report->maxfield; a++)
1292                         hid_input_field(hid, report->field[a], cdata, interrupt);
1293                 hdrv = hid->driver;
1294                 if (hdrv && hdrv->report)
1295                         hdrv->report(hid, report);
1296         }
1297
1298         if (hid->claimed & HID_CLAIMED_INPUT)
1299                 hidinput_report_event(hid, report);
1300 out:
1301         return ret;
1302 }
1303 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1304
1305 /**
1306  * hid_input_report - report data from lower layer (usb, bt...)
1307  *
1308  * @hid: hid device
1309  * @type: HID report type (HID_*_REPORT)
1310  * @data: report contents
1311  * @size: size of data parameter
1312  * @interrupt: distinguish between interrupt and control transfers
1313  *
1314  * This is data entry for lower layers.
1315  */
1316 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1317 {
1318         struct hid_report_enum *report_enum;
1319         struct hid_driver *hdrv;
1320         struct hid_report *report;
1321         int ret = 0;
1322
1323         if (!hid)
1324                 return -ENODEV;
1325
1326         if (down_trylock(&hid->driver_input_lock))
1327                 return -EBUSY;
1328
1329         if (!hid->driver) {
1330                 ret = -ENODEV;
1331                 goto unlock;
1332         }
1333         report_enum = hid->report_enum + type;
1334         hdrv = hid->driver;
1335
1336         if (!size) {
1337                 dbg_hid("empty report\n");
1338                 ret = -1;
1339                 goto unlock;
1340         }
1341
1342         /* Avoid unnecessary overhead if debugfs is disabled */
1343         if (!list_empty(&hid->debug_list))
1344                 hid_dump_report(hid, type, data, size);
1345
1346         report = hid_get_report(report_enum, data);
1347
1348         if (!report) {
1349                 ret = -1;
1350                 goto unlock;
1351         }
1352
1353         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1354                 ret = hdrv->raw_event(hid, report, data, size);
1355                 if (ret < 0) {
1356                         ret = ret < 0 ? ret : 0;
1357                         goto unlock;
1358                 }
1359         }
1360
1361         ret = hid_report_raw_event(hid, type, data, size, interrupt);
1362
1363 unlock:
1364         up(&hid->driver_input_lock);
1365         return ret;
1366 }
1367 EXPORT_SYMBOL_GPL(hid_input_report);
1368
1369 static bool hid_match_one_id(struct hid_device *hdev,
1370                 const struct hid_device_id *id)
1371 {
1372         return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1373                 (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1374                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1375                 (id->product == HID_ANY_ID || id->product == hdev->product);
1376 }
1377
1378 const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1379                 const struct hid_device_id *id)
1380 {
1381         for (; id->bus; id++)
1382                 if (hid_match_one_id(hdev, id))
1383                         return id;
1384
1385         return NULL;
1386 }
1387
1388 static const struct hid_device_id hid_hiddev_list[] = {
1389         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1390         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1391         { }
1392 };
1393
1394 static bool hid_hiddev(struct hid_device *hdev)
1395 {
1396         return !!hid_match_id(hdev, hid_hiddev_list);
1397 }
1398
1399
1400 static ssize_t
1401 read_report_descriptor(struct file *filp, struct kobject *kobj,
1402                 struct bin_attribute *attr,
1403                 char *buf, loff_t off, size_t count)
1404 {
1405         struct device *dev = container_of(kobj, struct device, kobj);
1406         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1407
1408         if (off >= hdev->rsize)
1409                 return 0;
1410
1411         if (off + count > hdev->rsize)
1412                 count = hdev->rsize - off;
1413
1414         memcpy(buf, hdev->rdesc + off, count);
1415
1416         return count;
1417 }
1418
1419 static struct bin_attribute dev_bin_attr_report_desc = {
1420         .attr = { .name = "report_descriptor", .mode = 0444 },
1421         .read = read_report_descriptor,
1422         .size = HID_MAX_DESCRIPTOR_SIZE,
1423 };
1424
1425 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1426 {
1427         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1428                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1429                 "Multi-Axis Controller"
1430         };
1431         const char *type, *bus;
1432         char buf[64];
1433         unsigned int i;
1434         int len;
1435         int ret;
1436
1437         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1438                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1439         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1440                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1441         if (hdev->bus != BUS_USB)
1442                 connect_mask &= ~HID_CONNECT_HIDDEV;
1443         if (hid_hiddev(hdev))
1444                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1445
1446         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1447                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1448                 hdev->claimed |= HID_CLAIMED_INPUT;
1449
1450         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1451                         !hdev->hiddev_connect(hdev,
1452                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1453                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1454         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1455                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1456
1457         /* Drivers with the ->raw_event callback set are not required to connect
1458          * to any other listener. */
1459         if (!hdev->claimed && !hdev->driver->raw_event) {
1460                 hid_err(hdev, "device has no listeners, quitting\n");
1461                 return -ENODEV;
1462         }
1463
1464         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1465                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1466                 hdev->ff_init(hdev);
1467
1468         len = 0;
1469         if (hdev->claimed & HID_CLAIMED_INPUT)
1470                 len += sprintf(buf + len, "input");
1471         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1472                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1473                                 hdev->minor);
1474         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1475                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1476                                 ((struct hidraw *)hdev->hidraw)->minor);
1477
1478         type = "Device";
1479         for (i = 0; i < hdev->maxcollection; i++) {
1480                 struct hid_collection *col = &hdev->collection[i];
1481                 if (col->type == HID_COLLECTION_APPLICATION &&
1482                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1483                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1484                         type = types[col->usage & 0xffff];
1485                         break;
1486                 }
1487         }
1488
1489         switch (hdev->bus) {
1490         case BUS_USB:
1491                 bus = "USB";
1492                 break;
1493         case BUS_BLUETOOTH:
1494                 bus = "BLUETOOTH";
1495                 break;
1496         default:
1497                 bus = "<UNKNOWN>";
1498         }
1499
1500         ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1501         if (ret)
1502                 hid_warn(hdev,
1503                          "can't create sysfs report descriptor attribute err: %d\n", ret);
1504
1505         hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1506                  buf, bus, hdev->version >> 8, hdev->version & 0xff,
1507                  type, hdev->name, hdev->phys);
1508
1509         return 0;
1510 }
1511 EXPORT_SYMBOL_GPL(hid_connect);
1512
1513 void hid_disconnect(struct hid_device *hdev)
1514 {
1515         device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1516         if (hdev->claimed & HID_CLAIMED_INPUT)
1517                 hidinput_disconnect(hdev);
1518         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1519                 hdev->hiddev_disconnect(hdev);
1520         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1521                 hidraw_disconnect(hdev);
1522 }
1523 EXPORT_SYMBOL_GPL(hid_disconnect);
1524
1525 /*
1526  * A list of devices for which there is a specialized driver on HID bus.
1527  *
1528  * Please note that for multitouch devices (driven by hid-multitouch driver),
1529  * there is a proper autodetection and autoloading in place (based on presence
1530  * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1531  * as we are doing the right thing in hid_scan_usage().
1532  *
1533  * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1534  * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1535  * used as a driver. See hid_scan_report().
1536  */
1537 static const struct hid_device_id hid_have_special_driver[] = {
1538         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1539         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1540         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1541         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1542         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1543         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1544         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1545         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1546         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1547         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1548         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1549         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1550         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1551         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1552         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1553         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1554         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1555         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1556         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1557         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1558         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1559         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1560         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1561         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1562         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1563         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1564         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1565         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1566         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1567         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1568         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1569         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1570         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1571         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1572         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1573         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1574         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1575         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1576         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1577         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1578         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1579         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1580         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1581         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1582         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1583         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1584         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1585         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1586         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1587         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1588         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1589         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1590         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1591         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1592         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1593         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1594         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1595         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1596         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1597         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1598         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1599         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1600         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1601         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1602         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1603         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1604         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1605         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1606         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1607         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1608         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1609         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1610         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1611         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1612         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1613         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1614         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1615         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1616         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1617         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1618         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1619         { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1620         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1621         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1622         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1623         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1624         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1625         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1626         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1627         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1628         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1629         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1630         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1631         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1632         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1633         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1634         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1635         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1636         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1637         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1638         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
1639         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
1640         { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1641         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1642         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1643         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1644         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1645         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1646         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1647         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1648         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1649         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1650         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1651         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
1652         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
1653         { HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_580) },
1654         { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1655         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1656         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1657         { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1658         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
1659         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
1660         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1661         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1662         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1663         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1664         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1665         { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1666 #if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
1667         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1668 #endif
1669         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1670         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1671         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1672         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1673         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1674         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1675         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1676         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1677         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1678         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1679         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1680         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1681         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1682         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1683         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1684         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1685         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1686         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1687         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1688         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1689         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1690         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1691         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1692         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1693         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1694 #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1695         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1696         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1697 #endif
1698         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1699         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1700         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1701         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1702         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1703         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1704         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1705         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1706         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1707         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1708         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1709         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1710         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1711         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1712         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1713         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1714         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1715         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1716         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1717         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1718         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1719         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1720         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1721         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1722         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1723         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1724         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1725         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1726         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1727         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1728         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1729         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1730         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1731         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1732         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1733         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1734         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1735         { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1736 #if IS_ENABLED(CONFIG_HID_ROCCAT)
1737         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1738         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1739         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1740         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1741         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
1742         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
1743         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1744         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
1745         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1746         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1747         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1748 #endif
1749         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1750         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1751         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1752         { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1753         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
1754         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
1755         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1756         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1757         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1758         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1759         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1760         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
1761         { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
1762         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1763         { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
1764         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1765         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1766         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1767         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1768         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1769         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1770         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1771         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1772         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1773         { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1774         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1775         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1776         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1777         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1778         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1779         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1780         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1781         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1782         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1783         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1784         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1785         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1786         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1787         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1788         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1789         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1790         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1791         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
1792         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1793         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1794         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1795         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1796         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1797         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1798         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1799         { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1800         { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
1801         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1802         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1803         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1804
1805         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1806         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1807         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1808         { }
1809 };
1810
1811 struct hid_dynid {
1812         struct list_head list;
1813         struct hid_device_id id;
1814 };
1815
1816 /**
1817  * store_new_id - add a new HID device ID to this driver and re-probe devices
1818  * @driver: target device driver
1819  * @buf: buffer for scanning device ID data
1820  * @count: input size
1821  *
1822  * Adds a new dynamic hid device ID to this driver,
1823  * and causes the driver to probe for all devices again.
1824  */
1825 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1826                 size_t count)
1827 {
1828         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1829         struct hid_dynid *dynid;
1830         __u32 bus, vendor, product;
1831         unsigned long driver_data = 0;
1832         int ret;
1833
1834         ret = sscanf(buf, "%x %x %x %lx",
1835                         &bus, &vendor, &product, &driver_data);
1836         if (ret < 3)
1837                 return -EINVAL;
1838
1839         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1840         if (!dynid)
1841                 return -ENOMEM;
1842
1843         dynid->id.bus = bus;
1844         dynid->id.group = HID_GROUP_ANY;
1845         dynid->id.vendor = vendor;
1846         dynid->id.product = product;
1847         dynid->id.driver_data = driver_data;
1848
1849         spin_lock(&hdrv->dyn_lock);
1850         list_add_tail(&dynid->list, &hdrv->dyn_list);
1851         spin_unlock(&hdrv->dyn_lock);
1852
1853         ret = driver_attach(&hdrv->driver);
1854
1855         return ret ? : count;
1856 }
1857 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1858
1859 static void hid_free_dynids(struct hid_driver *hdrv)
1860 {
1861         struct hid_dynid *dynid, *n;
1862
1863         spin_lock(&hdrv->dyn_lock);
1864         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1865                 list_del(&dynid->list);
1866                 kfree(dynid);
1867         }
1868         spin_unlock(&hdrv->dyn_lock);
1869 }
1870
1871 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1872                 struct hid_driver *hdrv)
1873 {
1874         struct hid_dynid *dynid;
1875
1876         spin_lock(&hdrv->dyn_lock);
1877         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1878                 if (hid_match_one_id(hdev, &dynid->id)) {
1879                         spin_unlock(&hdrv->dyn_lock);
1880                         return &dynid->id;
1881                 }
1882         }
1883         spin_unlock(&hdrv->dyn_lock);
1884
1885         return hid_match_id(hdev, hdrv->id_table);
1886 }
1887
1888 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1889 {
1890         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1891         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1892
1893         return hid_match_device(hdev, hdrv) != NULL;
1894 }
1895
1896 static int hid_device_probe(struct device *dev)
1897 {
1898         struct hid_driver *hdrv = container_of(dev->driver,
1899                         struct hid_driver, driver);
1900         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1901         const struct hid_device_id *id;
1902         int ret = 0;
1903
1904         if (down_interruptible(&hdev->driver_lock))
1905                 return -EINTR;
1906         if (down_interruptible(&hdev->driver_input_lock)) {
1907                 ret = -EINTR;
1908                 goto unlock_driver_lock;
1909         }
1910         hdev->io_started = false;
1911
1912         if (!hdev->driver) {
1913                 id = hid_match_device(hdev, hdrv);
1914                 if (id == NULL) {
1915                         ret = -ENODEV;
1916                         goto unlock;
1917                 }
1918
1919                 hdev->driver = hdrv;
1920                 if (hdrv->probe) {
1921                         ret = hdrv->probe(hdev, id);
1922                 } else { /* default probe */
1923                         ret = hid_open_report(hdev);
1924                         if (!ret)
1925                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1926                 }
1927                 if (ret) {
1928                         hid_close_report(hdev);
1929                         hdev->driver = NULL;
1930                 }
1931         }
1932 unlock:
1933         if (!hdev->io_started)
1934                 up(&hdev->driver_input_lock);
1935 unlock_driver_lock:
1936         up(&hdev->driver_lock);
1937         return ret;
1938 }
1939
1940 static int hid_device_remove(struct device *dev)
1941 {
1942         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1943         struct hid_driver *hdrv;
1944         int ret = 0;
1945
1946         if (down_interruptible(&hdev->driver_lock))
1947                 return -EINTR;
1948         if (down_interruptible(&hdev->driver_input_lock)) {
1949                 ret = -EINTR;
1950                 goto unlock_driver_lock;
1951         }
1952         hdev->io_started = false;
1953
1954         hdrv = hdev->driver;
1955         if (hdrv) {
1956                 if (hdrv->remove)
1957                         hdrv->remove(hdev);
1958                 else /* default remove */
1959                         hid_hw_stop(hdev);
1960                 hid_close_report(hdev);
1961                 hdev->driver = NULL;
1962         }
1963
1964         if (!hdev->io_started)
1965                 up(&hdev->driver_input_lock);
1966 unlock_driver_lock:
1967         up(&hdev->driver_lock);
1968         return ret;
1969 }
1970
1971 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
1972                              char *buf)
1973 {
1974         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1975         int len;
1976
1977         len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
1978                        hdev->bus, hdev->group, hdev->vendor, hdev->product);
1979
1980         return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
1981 }
1982
1983 static struct device_attribute hid_dev_attrs[] = {
1984         __ATTR_RO(modalias),
1985         __ATTR_NULL,
1986 };
1987
1988 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1989 {
1990         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1991
1992         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
1993                         hdev->bus, hdev->vendor, hdev->product))
1994                 return -ENOMEM;
1995
1996         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
1997                 return -ENOMEM;
1998
1999         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
2000                 return -ENOMEM;
2001
2002         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
2003                 return -ENOMEM;
2004
2005         if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
2006                            hdev->bus, hdev->group, hdev->vendor, hdev->product))
2007                 return -ENOMEM;
2008
2009         return 0;
2010 }
2011
2012 static struct bus_type hid_bus_type = {
2013         .name           = "hid",
2014         .dev_attrs      = hid_dev_attrs,
2015         .match          = hid_bus_match,
2016         .probe          = hid_device_probe,
2017         .remove         = hid_device_remove,
2018         .uevent         = hid_uevent,
2019 };
2020
2021 /* a list of devices that shouldn't be handled by HID core at all */
2022 static const struct hid_device_id hid_ignore_list[] = {
2023         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
2024         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
2025         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
2026         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
2027         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
2028         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
2029         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
2030         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
2031         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
2032         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
2033         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
2034         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
2035         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
2036         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
2037         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
2038         { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
2039         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
2040         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
2041         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
2042         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
2043         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
2044         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
2045         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
2046         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
2047         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
2048         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
2049         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
2050         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
2051         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
2052         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
2053         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
2054         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
2055         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
2056         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
2057         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
2058         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
2059         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
2060         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
2061         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
2062         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
2063         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
2064         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2065         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2066         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2067         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2068         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2069         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2070         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2071         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2072         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2073         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2074         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2075         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2076         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2077         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2078         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2079         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2080         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2081         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2082         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2083         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2084         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2085         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2086         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2087         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2088         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2089         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2090         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2091         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2092         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2093         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2094         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2095         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2096         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2097         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2098         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2099         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2100         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2101         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2102         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2103         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2104         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2105         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2106         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2107         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2108         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2109         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2110         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2111         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2112         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2113         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2114         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2115         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2116         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2117         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2118         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
2119         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
2120         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2121         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2122         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2123         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2124         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2125         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2126         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2127         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2128         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2129         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2130         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2131         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2132         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2133         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2134         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2135         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2136         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2137         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2138         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2139         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2140         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2141         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2142         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2143         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2144         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2145         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2146         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2147         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2148         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2149         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2150         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2151         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2152         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2153         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2154         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2155         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2156         { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2157         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2158         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2159         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2160         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2161         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2162         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2163         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2164         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2165         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2166         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2167         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2168         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2169         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2170         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2171         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2172         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2173         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2174         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2175         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2176         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2177         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2178 #if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2179         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2180         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2181         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2182         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2183         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2184         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2185         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2186         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2187 #endif
2188         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2189         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2190         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2191         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2192         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2193         { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
2194         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2195         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2196         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2197         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2198         { }
2199 };
2200
2201 /**
2202  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2203  *
2204  * There are composite devices for which we want to ignore only a certain
2205  * interface. This is a list of devices for which only the mouse interface will
2206  * be ignored. This allows a dedicated driver to take care of the interface.
2207  */
2208 static const struct hid_device_id hid_mouse_ignore_list[] = {
2209         /* appletouch driver */
2210         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2211         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2212         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2213         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2214         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2215         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2216         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2217         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2218         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2219         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2220         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2221         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2222         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2223         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2224         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2225         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2226         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2227         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2228         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2229         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2230         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2231         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2232         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2233         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2234         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2235         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2236         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2237         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2238         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2239         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2240         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2241         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2242         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2243         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2244         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2245         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2246         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2247         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2248         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2249         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2250         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2251         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2252         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2253         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2254         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2255         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2256         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2257         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2258         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2259         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2260         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2261         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2262         { }
2263 };
2264
2265 bool hid_ignore(struct hid_device *hdev)
2266 {
2267         if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2268                 return false;
2269         if (hdev->quirks & HID_QUIRK_IGNORE)
2270                 return true;
2271
2272         switch (hdev->vendor) {
2273         case USB_VENDOR_ID_CODEMERCS:
2274                 /* ignore all Code Mercenaries IOWarrior devices */
2275                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2276                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2277                         return true;
2278                 break;
2279         case USB_VENDOR_ID_LOGITECH:
2280                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2281                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2282                         return true;
2283                 /*
2284                  * The Keene FM transmitter USB device has the same USB ID as
2285                  * the Logitech AudioHub Speaker, but it should ignore the hid.
2286                  * Check if the name is that of the Keene device.
2287                  * For reference: the name of the AudioHub is
2288                  * "HOLTEK  AudioHub Speaker".
2289                  */
2290                 if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2291                         !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2292                                 return true;
2293                 break;
2294         case USB_VENDOR_ID_SOUNDGRAPH:
2295                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2296                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2297                         return true;
2298                 break;
2299         case USB_VENDOR_ID_HANWANG:
2300                 if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2301                     hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2302                         return true;
2303                 break;
2304         case USB_VENDOR_ID_JESS:
2305                 if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2306                                 hdev->type == HID_TYPE_USBNONE)
2307                         return true;
2308                 break;
2309         case USB_VENDOR_ID_DWAV:
2310                 /* These are handled by usbtouchscreen. hdev->type is probably
2311                  * HID_TYPE_USBNONE, but we say !HID_TYPE_USBMOUSE to match
2312                  * usbtouchscreen. */
2313                 if ((hdev->product == USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER ||
2314                      hdev->product == USB_DEVICE_ID_DWAV_TOUCHCONTROLLER) &&
2315                     hdev->type != HID_TYPE_USBMOUSE)
2316                         return true;
2317                 break;
2318         case USB_VENDOR_ID_VELLEMAN:
2319                 /* These are not HID devices.  They are handled by comedi. */
2320                 if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2321                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2322                     (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2323                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2324                         return true;
2325                 break;
2326         case USB_VENDOR_ID_ATMEL_V_USB:
2327                 /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2328                  * it has the same USB ID as many Atmel V-USB devices. This
2329                  * usb radio is handled by radio-ma901.c driver so we want
2330                  * ignore the hid. Check the name, bus, product and ignore
2331                  * if we have MA901 usb radio.
2332                  */
2333                 if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2334                         hdev->bus == BUS_USB &&
2335                         strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2336                         return true;
2337                 break;
2338         }
2339
2340         if (hdev->type == HID_TYPE_USBMOUSE &&
2341                         hid_match_id(hdev, hid_mouse_ignore_list))
2342                 return true;
2343
2344         return !!hid_match_id(hdev, hid_ignore_list);
2345 }
2346 EXPORT_SYMBOL_GPL(hid_ignore);
2347
2348 int hid_add_device(struct hid_device *hdev)
2349 {
2350         static atomic_t id = ATOMIC_INIT(0);
2351         int ret;
2352
2353         if (WARN_ON(hdev->status & HID_STAT_ADDED))
2354                 return -EBUSY;
2355
2356         /* we need to kill them here, otherwise they will stay allocated to
2357          * wait for coming driver */
2358         if (hid_ignore(hdev))
2359                 return -ENODEV;
2360
2361         /*
2362          * Read the device report descriptor once and use as template
2363          * for the driver-specific modifications.
2364          */
2365         ret = hdev->ll_driver->parse(hdev);
2366         if (ret)
2367                 return ret;
2368         if (!hdev->dev_rdesc)
2369                 return -ENODEV;
2370
2371         /*
2372          * Scan generic devices for group information
2373          */
2374         if (hid_ignore_special_drivers ||
2375             !hid_match_id(hdev, hid_have_special_driver)) {
2376                 ret = hid_scan_report(hdev);
2377                 if (ret)
2378                         hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2379         }
2380
2381         /* XXX hack, any other cleaner solution after the driver core
2382          * is converted to allow more than 20 bytes as the device name? */
2383         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2384                      hdev->vendor, hdev->product, atomic_inc_return(&id));
2385
2386         hid_debug_register(hdev, dev_name(&hdev->dev));
2387         ret = device_add(&hdev->dev);
2388         if (!ret)
2389                 hdev->status |= HID_STAT_ADDED;
2390         else
2391                 hid_debug_unregister(hdev);
2392
2393         return ret;
2394 }
2395 EXPORT_SYMBOL_GPL(hid_add_device);
2396
2397 /**
2398  * hid_allocate_device - allocate new hid device descriptor
2399  *
2400  * Allocate and initialize hid device, so that hid_destroy_device might be
2401  * used to free it.
2402  *
2403  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2404  * error value.
2405  */
2406 struct hid_device *hid_allocate_device(void)
2407 {
2408         struct hid_device *hdev;
2409         int ret = -ENOMEM;
2410
2411         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2412         if (hdev == NULL)
2413                 return ERR_PTR(ret);
2414
2415         device_initialize(&hdev->dev);
2416         hdev->dev.release = hid_device_release;
2417         hdev->dev.bus = &hid_bus_type;
2418
2419         hid_close_report(hdev);
2420
2421         init_waitqueue_head(&hdev->debug_wait);
2422         INIT_LIST_HEAD(&hdev->debug_list);
2423         spin_lock_init(&hdev->debug_list_lock);
2424         sema_init(&hdev->driver_lock, 1);
2425         sema_init(&hdev->driver_input_lock, 1);
2426
2427         return hdev;
2428 }
2429 EXPORT_SYMBOL_GPL(hid_allocate_device);
2430
2431 static void hid_remove_device(struct hid_device *hdev)
2432 {
2433         if (hdev->status & HID_STAT_ADDED) {
2434                 device_del(&hdev->dev);
2435                 hid_debug_unregister(hdev);
2436                 hdev->status &= ~HID_STAT_ADDED;
2437         }
2438         kfree(hdev->dev_rdesc);
2439         hdev->dev_rdesc = NULL;
2440         hdev->dev_rsize = 0;
2441 }
2442
2443 /**
2444  * hid_destroy_device - free previously allocated device
2445  *
2446  * @hdev: hid device
2447  *
2448  * If you allocate hid_device through hid_allocate_device, you should ever
2449  * free by this function.
2450  */
2451 void hid_destroy_device(struct hid_device *hdev)
2452 {
2453         hid_remove_device(hdev);
2454         put_device(&hdev->dev);
2455 }
2456 EXPORT_SYMBOL_GPL(hid_destroy_device);
2457
2458 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2459                 const char *mod_name)
2460 {
2461         int ret;
2462
2463         hdrv->driver.name = hdrv->name;
2464         hdrv->driver.bus = &hid_bus_type;
2465         hdrv->driver.owner = owner;
2466         hdrv->driver.mod_name = mod_name;
2467
2468         INIT_LIST_HEAD(&hdrv->dyn_list);
2469         spin_lock_init(&hdrv->dyn_lock);
2470
2471         ret = driver_register(&hdrv->driver);
2472         if (ret)
2473                 return ret;
2474
2475         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2476         if (ret)
2477                 driver_unregister(&hdrv->driver);
2478
2479         return ret;
2480 }
2481 EXPORT_SYMBOL_GPL(__hid_register_driver);
2482
2483 void hid_unregister_driver(struct hid_driver *hdrv)
2484 {
2485         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2486         driver_unregister(&hdrv->driver);
2487         hid_free_dynids(hdrv);
2488 }
2489 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2490
2491 int hid_check_keys_pressed(struct hid_device *hid)
2492 {
2493         struct hid_input *hidinput;
2494         int i;
2495
2496         if (!(hid->claimed & HID_CLAIMED_INPUT))
2497                 return 0;
2498
2499         list_for_each_entry(hidinput, &hid->inputs, list) {
2500                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2501                         if (hidinput->input->key[i])
2502                                 return 1;
2503         }
2504
2505         return 0;
2506 }
2507
2508 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2509
2510 static int __init hid_init(void)
2511 {
2512         int ret;
2513
2514         if (hid_debug)
2515                 pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2516                         "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2517
2518         ret = bus_register(&hid_bus_type);
2519         if (ret) {
2520                 pr_err("can't register hid bus\n");
2521                 goto err;
2522         }
2523
2524         ret = hidraw_init();
2525         if (ret)
2526                 goto err_bus;
2527
2528         hid_debug_init();
2529
2530         return 0;
2531 err_bus:
2532         bus_unregister(&hid_bus_type);
2533 err:
2534         return ret;
2535 }
2536
2537 static void __exit hid_exit(void)
2538 {
2539         hid_debug_exit();
2540         hidraw_exit();
2541         bus_unregister(&hid_bus_type);
2542 }
2543
2544 module_init(hid_init);
2545 module_exit(hid_exit);
2546
2547 MODULE_AUTHOR("Andreas Gal");
2548 MODULE_AUTHOR("Vojtech Pavlik");
2549 MODULE_AUTHOR("Jiri Kosina");
2550 MODULE_LICENSE(DRIVER_LICENSE);
2551