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 <[email protected]>
   6  *  Copyright (c) 2005 Michael Haboustak <[email protected]> for Concept2, Inc
   7  *  Copyright (c) 2006-2012 Jiri Kosina
   8  */
   9
  10 /*
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the Free
  13  * Software Foundation; either version 2 of the License, or (at your option)
  14  * any later version.
  15  */
  16
  17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  18
  19 #include <linux/module.h>
  20 #include <linux/slab.h>
  21 #include <linux/init.h>
  22 #include <linux/kernel.h>
  23 #include <linux/list.h>
  24 #include <linux/mm.h>
  25 #include <linux/spinlock.h>
  26 #include <asm/unaligned.h>
  27 #include <asm/byteorder.h>
  28 #include <linux/input.h>
  29 #include <linux/wait.h>
  30 #include <linux/vmalloc.h>
  31 #include <linux/sched.h>
  32 #include <linux/semaphore.h>
  33
  34 #include <linux/hid.h>
  35 #include <linux/hiddev.h>
  36 #include <linux/hid-debug.h>
  37 #include <linux/hidraw.h>
  38
  39 #include "hid-ids.h"
  40
  41 /*
  42  * Version Information
  43  */
  44
  45 #define DRIVER_DESC "HID core driver"
  46 #define DRIVER_LICENSE "GPL"
  47
  48 int hid_debug = 0;
  49 module_param_named(debug, hid_debug, int, 0600);
  50 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
  51 EXPORT_SYMBOL_GPL(hid_debug);
  52
  53 static int hid_ignore_special_drivers = 0;
  54 module_param_named(ignore_special_drivers, hid_ignore_special_drivers, int, 0600);
  55 MODULE_PARM_DESC(debug, "Ignore any special drivers and handle all devices by generic driver");
  56
  57 /*
  58  * Register a new report for a device.
  59  */
  60
  61 struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
  62 {
  63         struct hid_report_enum *report_enum = device->report_enum + type;
  64         struct hid_report *report;
  65
  66         if (id >= HID_MAX_IDS)
  67                 return NULL;
  68         if (report_enum->report_id_hash[id])
  69                 return report_enum->report_id_hash[id];
  70
  71         report = kzalloc(sizeof(struct hid_report), GFP_KERNEL);
  72         if (!report)
  73                 return NULL;
  74
  75         if (id != 0)
  76                 report_enum->numbered = 1;
  77
  78         report->id = id;
  79         report->type = type;
  80         report->size = 0;
  81         report->device = device;
  82         report_enum->report_id_hash[id] = report;
  83
  84         list_add_tail(&report->list, &report_enum->report_list);
  85
  86         return report;
  87 }
  88 EXPORT_SYMBOL_GPL(hid_register_report);
  89
  90 /*
  91  * Register a new field for this report.
  92  */
  93
  94 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
  95 {
  96         struct hid_field *field;
  97         int i;
  98
  99         if (report->maxfield == HID_MAX_FIELDS) {
 100                 hid_err(report->device, "too many fields in report\n");
 101                 return NULL;
 102         }
 103
 104         field = kzalloc((sizeof(struct hid_field) +
 105                          usages * sizeof(struct hid_usage) +
 106                          values * sizeof(unsigned)), GFP_KERNEL);
 107         if (!field)
 108                 return NULL;
 109
 110         field->index = report->maxfield++;
 111         report->field[field->index] = field;
 112         field->usage = (struct hid_usage *)(field + 1);
 113         field->value = (s32 *)(field->usage + usages);
 114         field->report = report;
 115
 116         for (i = 0; i < usages; i++)
 117                 field->usage[i].usage_index = i;
 118
 119         return field;
 120 }
 121
 122 /*
 123  * Open a collection. The type/usage is pushed on the stack.
 124  */
 125
 126 static int open_collection(struct hid_parser *parser, unsigned type)
 127 {
 128         struct hid_collection *collection;
 129         unsigned usage;
 130
 131         usage = parser->local.usage[0];
 132
 133         if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
 134                 hid_err(parser->device, "collection stack overflow\n");
 135                 return -EINVAL;
 136         }
 137
 138         if (parser->device->maxcollection == parser->device->collection_size) {
 139                 collection = kmalloc(sizeof(struct hid_collection) *
 140                                 parser->device->collection_size * 2, GFP_KERNEL);
 141                 if (collection == NULL) {
 142                         hid_err(parser->device, "failed to reallocate collection array\n");
 143                         return -ENOMEM;
 144                 }
 145                 memcpy(collection, parser->device->collection,
 146                         sizeof(struct hid_collection) *
 147                         parser->device->collection_size);
 148                 memset(collection + parser->device->collection_size, 0,
 149                         sizeof(struct hid_collection) *
 150                         parser->device->collection_size);
 151                 kfree(parser->device->collection);
 152                 parser->device->collection = collection;
 153                 parser->device->collection_size *= 2;
 154         }
 155
 156         parser->collection_stack[parser->collection_stack_ptr++] =
 157                 parser->device->maxcollection;
 158
 159         collection = parser->device->collection +
 160                 parser->device->maxcollection++;
 161         collection->type = type;
 162         collection->usage = usage;
 163         collection->level = parser->collection_stack_ptr - 1;
 164
 165         if (type == HID_COLLECTION_APPLICATION)
 166                 parser->device->maxapplication++;
 167
 168         return 0;
 169 }
 170
 171 /*
 172  * Close a collection.
 173  */
 174
 175 static int close_collection(struct hid_parser *parser)
 176 {
 177         if (!parser->collection_stack_ptr) {
 178                 hid_err(parser->device, "collection stack underflow\n");
 179                 return -EINVAL;
 180         }
 181         parser->collection_stack_ptr--;
 182         return 0;
 183 }
 184
 185 /*
 186  * Climb up the stack, search for the specified collection type
 187  * and return the usage.
 188  */
 189
 190 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
 191 {
 192         struct hid_collection *collection = parser->device->collection;
 193         int n;
 194
 195         for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
 196                 unsigned index = parser->collection_stack[n];
 197                 if (collection[index].type == type)
 198                         return collection[index].usage;
 199         }
 200         return 0; /* we know nothing about this usage type */
 201 }
 202
 203 /*
 204  * Add a usage to the temporary parser table.
 205  */
 206
 207 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
 208 {
 209         if (parser->local.usage_index >= HID_MAX_USAGES) {
 210                 hid_err(parser->device, "usage index exceeded\n");
 211                 return -1;
 212         }
 213         parser->local.usage[parser->local.usage_index] = usage;
 214         parser->local.collection_index[parser->local.usage_index] =
 215                 parser->collection_stack_ptr ?
 216                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
 217         parser->local.usage_index++;
 218         return 0;
 219 }
 220
 221 /*
 222  * Register a new field for this report.
 223  */
 224
 225 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
 226 {
 227         struct hid_report *report;
 228         struct hid_field *field;
 229         int usages;
 230         unsigned offset;
 231         int i;
 232
 233         report = hid_register_report(parser->device, report_type, parser->global.report_id);
 234         if (!report) {
 235                 hid_err(parser->device, "hid_register_report failed\n");
 236                 return -1;
 237         }
 238
 239         /* Handle both signed and unsigned cases properly */
 240         if ((parser->global.logical_minimum < 0 &&
 241                 parser->global.logical_maximum <
 242                 parser->global.logical_minimum) ||
 243                 (parser->global.logical_minimum >= 0 &&
 244                 (__u32)parser->global.logical_maximum <
 245                 (__u32)parser->global.logical_minimum)) {
 246                 dbg_hid("logical range invalid 0x%x 0x%x\n",
 247                         parser->global.logical_minimum,
 248                         parser->global.logical_maximum);
 249                 return -1;
 250         }
 251
 252         offset = report->size;
 253         report->size += parser->global.report_size * parser->global.report_count;
 254
 255         if (!parser->local.usage_index) /* Ignore padding fields */
 256                 return 0;
 257
 258         usages = max_t(int, parser->local.usage_index, parser->global.report_count);
 259
 260         field = hid_register_field(report, usages, parser->global.report_count);
 261         if (!field)
 262                 return 0;
 263
 264         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
 265         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
 266         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
 267
 268         for (i = 0; i < usages; i++) {
 269                 int j = i;
 270                 /* Duplicate the last usage we parsed if we have excess values */
 271                 if (i >= parser->local.usage_index)
 272                         j = parser->local.usage_index - 1;
 273                 field->usage[i].hid = parser->local.usage[j];
 274                 field->usage[i].collection_index =
 275                         parser->local.collection_index[j];
 276         }
 277
 278         field->maxusage = usages;
 279         field->flags = flags;
 280         field->report_offset = offset;
 281         field->report_type = report_type;
 282         field->report_size = parser->global.report_size;
 283         field->report_count = parser->global.report_count;
 284         field->logical_minimum = parser->global.logical_minimum;
 285         field->logical_maximum = parser->global.logical_maximum;
 286         field->physical_minimum = parser->global.physical_minimum;
 287         field->physical_maximum = parser->global.physical_maximum;
 288         field->unit_exponent = parser->global.unit_exponent;
 289         field->unit = parser->global.unit;
 290
 291         return 0;
 292 }
 293
 294 /*
 295  * Read data value from item.
 296  */
 297
 298 static u32 item_udata(struct hid_item *item)
 299 {
 300         switch (item->size) {
 301         case 1: return item->data.u8;
 302         case 2: return item->data.u16;
 303         case 4: return item->data.u32;
 304         }
 305         return 0;
 306 }
 307
 308 static s32 item_sdata(struct hid_item *item)
 309 {
 310         switch (item->size) {
 311         case 1: return item->data.s8;
 312         case 2: return item->data.s16;
 313         case 4: return item->data.s32;
 314         }
 315         return 0;
 316 }
 317
 318 /*
 319  * Process a global item.
 320  */
 321
 322 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
 323 {
 324         __u32 raw_value;
 325         switch (item->tag) {
 326         case HID_GLOBAL_ITEM_TAG_PUSH:
 327
 328                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
 329                         hid_err(parser->device, "global environment stack overflow\n");
 330                         return -1;
 331                 }
 332
 333                 memcpy(parser->global_stack + parser->global_stack_ptr++,
 334                         &parser->global, sizeof(struct hid_global));
 335                 return 0;
 336
 337         case HID_GLOBAL_ITEM_TAG_POP:
 338
 339                 if (!parser->global_stack_ptr) {
 340                         hid_err(parser->device, "global environment stack underflow\n");
 341                         return -1;
 342                 }
 343
 344                 memcpy(&parser->global, parser->global_stack +
 345                         --parser->global_stack_ptr, sizeof(struct hid_global));
 346                 return 0;
 347
 348         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
 349                 parser->global.usage_page = item_udata(item);
 350                 return 0;
 351
 352         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
 353                 parser->global.logical_minimum = item_sdata(item);
 354                 return 0;
 355
 356         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
 357                 if (parser->global.logical_minimum < 0)
 358                         parser->global.logical_maximum = item_sdata(item);
 359                 else
 360                         parser->global.logical_maximum = item_udata(item);
 361                 return 0;
 362
 363         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
 364                 parser->global.physical_minimum = item_sdata(item);
 365                 return 0;
 366
 367         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
 368                 if (parser->global.physical_minimum < 0)
 369                         parser->global.physical_maximum = item_sdata(item);
 370                 else
 371                         parser->global.physical_maximum = item_udata(item);
 372                 return 0;
 373
 374         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
 375                 /* Units exponent negative numbers are given through a
 376                  * two's complement.
 377                  * See "6.2.2.7 Global Items" for more information. */
 378                 raw_value = item_udata(item);
 379                 if (!(raw_value & 0xfffffff0))
 380                         parser->global.unit_exponent = hid_snto32(raw_value, 4);
 381                 else
 382                         parser->global.unit_exponent = raw_value;
 383                 return 0;
 384
 385         case HID_GLOBAL_ITEM_TAG_UNIT:
 386                 parser->global.unit = item_udata(item);
 387                 return 0;
 388
 389         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
 390                 parser->global.report_size = item_udata(item);
 391                 if (parser->global.report_size > 128) {
 392                         hid_err(parser->device, "invalid report_size %d\n",
 393                                         parser->global.report_size);
 394                         return -1;
 395                 }
 396                 return 0;
 397
 398         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
 399                 parser->global.report_count = item_udata(item);
 400                 if (parser->global.report_count > HID_MAX_USAGES) {
 401                         hid_err(parser->device, "invalid report_count %d\n",
 402                                         parser->global.report_count);
 403                         return -1;
 404                 }
 405                 return 0;
 406
 407         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
 408                 parser->global.report_id = item_udata(item);
 409                 if (parser->global.report_id == 0 ||
 410                     parser->global.report_id >= HID_MAX_IDS) {
 411                         hid_err(parser->device, "report_id %u is invalid\n",
 412                                 parser->global.report_id);
 413                         return -1;
 414                 }
 415                 return 0;
 416
 417         default:
 418                 hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
 419                 return -1;
 420         }
 421 }
 422
 423 /*
 424  * Process a local item.
 425  */
 426
 427 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 428 {
 429         __u32 data;
 430         unsigned n;
 431
 432         data = item_udata(item);
 433
 434         switch (item->tag) {
 435         case HID_LOCAL_ITEM_TAG_DELIMITER:
 436
 437                 if (data) {
 438                         /*
 439                          * We treat items before the first delimiter
 440                          * as global to all usage sets (branch 0).
 441                          * In the moment we process only these global
 442                          * items and the first delimiter set.
 443                          */
 444                         if (parser->local.delimiter_depth != 0) {
 445                                 hid_err(parser->device, "nested delimiters\n");
 446                                 return -1;
 447                         }
 448                         parser->local.delimiter_depth++;
 449                         parser->local.delimiter_branch++;
 450                 } else {
 451                         if (parser->local.delimiter_depth < 1) {
 452                                 hid_err(parser->device, "bogus close delimiter\n");
 453                                 return -1;
 454                         }
 455                         parser->local.delimiter_depth--;
 456                 }
 457                 return 0;
 458
 459         case HID_LOCAL_ITEM_TAG_USAGE:
 460
 461                 if (parser->local.delimiter_branch > 1) {
 462                         dbg_hid("alternative usage ignored\n");
 463                         return 0;
 464                 }
 465
 466                 if (item->size <= 2)
 467                         data = (parser->global.usage_page << 16) + data;
 468
 469                 return hid_add_usage(parser, data);
 470
 471         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 472
 473                 if (parser->local.delimiter_branch > 1) {
 474                         dbg_hid("alternative usage ignored\n");
 475                         return 0;
 476                 }
 477
 478                 if (item->size <= 2)
 479                         data = (parser->global.usage_page << 16) + data;
 480
 481                 parser->local.usage_minimum = data;
 482                 return 0;
 483
 484         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 485
 486                 if (parser->local.delimiter_branch > 1) {
 487                         dbg_hid("alternative usage ignored\n");
 488                         return 0;
 489                 }
 490
 491                 if (item->size <= 2)
 492                         data = (parser->global.usage_page << 16) + data;
 493
 494                 for (n = parser->local.usage_minimum; n <= data; n++)
 495                         if (hid_add_usage(parser, n)) {
 496                                 dbg_hid("hid_add_usage failed\n");
 497                                 return -1;
 498                         }
 499                 return 0;
 500
 501         default:
 502
 503                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
 504                 return 0;
 505         }
 506         return 0;
 507 }
 508
 509 /*
 510  * Process a main item.
 511  */
 512
 513 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
 514 {
 515         __u32 data;
 516         int ret;
 517
 518         data = item_udata(item);
 519
 520         switch (item->tag) {
 521         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 522                 ret = open_collection(parser, data & 0xff);
 523                 break;
 524         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 525                 ret = close_collection(parser);
 526                 break;
 527         case HID_MAIN_ITEM_TAG_INPUT:
 528                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
 529                 break;
 530         case HID_MAIN_ITEM_TAG_OUTPUT:
 531                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
 532                 break;
 533         case HID_MAIN_ITEM_TAG_FEATURE:
 534                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
 535                 break;
 536         default:
 537                 hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
 538                 ret = 0;
 539         }
 540
 541         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
 542
 543         return ret;
 544 }
 545
 546 /*
 547  * Process a reserved item.
 548  */
 549
 550 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
 551 {
 552         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
 553         return 0;
 554 }
 555
 556 /*
 557  * Free a report and all registered fields. The field->usage and
 558  * field->value table's are allocated behind the field, so we need
 559  * only to free(field) itself.
 560  */
 561
 562 static void hid_free_report(struct hid_report *report)
 563 {
 564         unsigned n;
 565
 566         for (n = 0; n < report->maxfield; n++)
 567                 kfree(report->field[n]);
 568         kfree(report);
 569 }
 570
 571 /*
 572  * Close report. This function returns the device
 573  * state to the point prior to hid_open_report().
 574  */
 575 static void hid_close_report(struct hid_device *device)
 576 {
 577         unsigned i, j;
 578
 579         for (i = 0; i < HID_REPORT_TYPES; i++) {
 580                 struct hid_report_enum *report_enum = device->report_enum + i;
 581
 582                 for (j = 0; j < HID_MAX_IDS; j++) {
 583                         struct hid_report *report = report_enum->report_id_hash[j];
 584                         if (report)
 585                                 hid_free_report(report);
 586                 }
 587                 memset(report_enum, 0, sizeof(*report_enum));
 588                 INIT_LIST_HEAD(&report_enum->report_list);
 589         }
 590
 591         kfree(device->rdesc);
 592         device->rdesc = NULL;
 593         device->rsize = 0;
 594
 595         kfree(device->collection);
 596         device->collection = NULL;
 597         device->collection_size = 0;
 598         device->maxcollection = 0;
 599         device->maxapplication = 0;
 600
 601         device->status &= ~HID_STAT_PARSED;
 602 }
 603
 604 /*
 605  * Free a device structure, all reports, and all fields.
 606  */
 607
 608 static void hid_device_release(struct device *dev)
 609 {
 610         struct hid_device *hid = container_of(dev, struct hid_device, dev);
 611
 612         hid_close_report(hid);
 613         kfree(hid->dev_rdesc);
 614         kfree(hid);
 615 }
 616
 617 /*
 618  * Fetch a report description item from the data stream. We support long
 619  * items, though they are not used yet.
 620  */
 621
 622 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
 623 {
 624         u8 b;
 625
 626         if ((end - start) <= 0)
 627                 return NULL;
 628
 629         b = *start++;
 630
 631         item->type = (b >> 2) & 3;
 632         item->tag  = (b >> 4) & 15;
 633
 634         if (item->tag == HID_ITEM_TAG_LONG) {
 635
 636                 item->format = HID_ITEM_FORMAT_LONG;
 637
 638                 if ((end - start) < 2)
 639                         return NULL;
 640
 641                 item->size = *start++;
 642                 item->tag  = *start++;
 643
 644                 if ((end - start) < item->size)
 645                         return NULL;
 646
 647                 item->data.longdata = start;
 648                 start += item->size;
 649                 return start;
 650         }
 651
 652         item->format = HID_ITEM_FORMAT_SHORT;
 653         item->size = b & 3;
 654
 655         switch (item->size) {
 656         case 0:
 657                 return start;
 658
 659         case 1:
 660                 if ((end - start) < 1)
 661                         return NULL;
 662                 item->data.u8 = *start++;
 663                 return start;
 664
 665         case 2:
 666                 if ((end - start) < 2)
 667                         return NULL;
 668                 item->data.u16 = get_unaligned_le16(start);
 669                 start = (__u8 *)((__le16 *)start + 1);
 670                 return start;
 671
 672         case 3:
 673                 item->size++;
 674                 if ((end - start) < 4)
 675                         return NULL;
 676                 item->data.u32 = get_unaligned_le32(start);
 677                 start = (__u8 *)((__le32 *)start + 1);
 678                 return start;
 679         }
 680
 681         return NULL;
 682 }
 683
 684 static void hid_scan_input_usage(struct hid_parser *parser, u32 usage)
 685 {
 686         struct hid_device *hid = parser->device;
 687
 688         if (usage == HID_DG_CONTACTID)
 689                 hid->group = HID_GROUP_MULTITOUCH;
 690 }
 691
 692 static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage)
 693 {
 694         if (usage == 0xff0000c5 && parser->global.report_count == 256 &&
 695             parser->global.report_size == 8)
 696                 parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;
 697 }
 698
 699 static void hid_scan_collection(struct hid_parser *parser, unsigned type)
 700 {
 701         struct hid_device *hid = parser->device;
 702
 703         if (((parser->global.usage_page << 16) == HID_UP_SENSOR) &&
 704             type == HID_COLLECTION_PHYSICAL)
 705                 hid->group = HID_GROUP_SENSOR_HUB;
 706 }
 707
 708 static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)
 709 {
 710         __u32 data;
 711         int i;
 712
 713         data = item_udata(item);
 714
 715         switch (item->tag) {
 716         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 717                 hid_scan_collection(parser, data & 0xff);
 718                 break;
 719         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 720                 break;
 721         case HID_MAIN_ITEM_TAG_INPUT:
 722                 for (i = 0; i < parser->local.usage_index; i++)
 723                         hid_scan_input_usage(parser, parser->local.usage[i]);
 724                 break;
 725         case HID_MAIN_ITEM_TAG_OUTPUT:
 726                 break;
 727         case HID_MAIN_ITEM_TAG_FEATURE:
 728                 for (i = 0; i < parser->local.usage_index; i++)
 729                         hid_scan_feature_usage(parser, parser->local.usage[i]);
 730                 break;
 731         }
 732
 733         /* Reset the local parser environment */
 734         memset(&parser->local, 0, sizeof(parser->local));
 735
 736         return 0;
 737 }
 738
 739 /*
 740  * Scan a report descriptor before the device is added to the bus.
 741  * Sets device groups and other properties that determine what driver
 742  * to load.
 743  */
 744 static int hid_scan_report(struct hid_device *hid)
 745 {
 746         struct hid_parser *parser;
 747         struct hid_item item;
 748         __u8 *start = hid->dev_rdesc;
 749         __u8 *end = start + hid->dev_rsize;
 750         static int (*dispatch_type[])(struct hid_parser *parser,
 751                                       struct hid_item *item) = {
 752                 hid_scan_main,
 753                 hid_parser_global,
 754                 hid_parser_local,
 755                 hid_parser_reserved
 756         };
 757
 758         parser = vzalloc(sizeof(struct hid_parser));
 759         if (!parser)
 760                 return -ENOMEM;
 761
 762         parser->device = hid;
 763         hid->group = HID_GROUP_GENERIC;
 764
 765         /*
 766          * The parsing is simpler than the one in hid_open_report() as we should
 767          * be robust against hid errors. Those errors will be raised by
 768          * hid_open_report() anyway.
 769          */
 770         while ((start = fetch_item(start, end, &item)) != NULL)
 771                 dispatch_type[item.type](parser, &item);
 772
 773         /*
 774          * Handle special flags set during scanning.
 775          */
 776         if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) &&
 777             (hid->group == HID_GROUP_MULTITOUCH))
 778                 hid->group = HID_GROUP_MULTITOUCH_WIN_8;
 779
 780         vfree(parser);
 781         return 0;
 782 }
 783
 784 /**
 785  * hid_parse_report - parse device report
 786  *
 787  * @device: hid device
 788  * @start: report start
 789  * @size: report size
 790  *
 791  * Allocate the device report as read by the bus driver. This function should
 792  * only be called from parse() in ll drivers.
 793  */
 794 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
 795 {
 796         hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
 797         if (!hid->dev_rdesc)
 798                 return -ENOMEM;
 799         hid->dev_rsize = size;
 800         return 0;
 801 }
 802 EXPORT_SYMBOL_GPL(hid_parse_report);
 803
 804 /**
 805  * hid_open_report - open a driver-specific device report
 806  *
 807  * @device: hid device
 808  *
 809  * Parse a report description into a hid_device structure. Reports are
 810  * enumerated, fields are attached to these reports.
 811  * 0 returned on success, otherwise nonzero error value.
 812  *
 813  * This function (or the equivalent hid_parse() macro) should only be
 814  * called from probe() in drivers, before starting the device.
 815  */
 816 int hid_open_report(struct hid_device *device)
 817 {
 818         struct hid_parser *parser;
 819         struct hid_item item;
 820         unsigned int size;
 821         __u8 *start;
 822         __u8 *buf;
 823         __u8 *end;
 824         int ret;
 825         static int (*dispatch_type[])(struct hid_parser *parser,
 826                                       struct hid_item *item) = {
 827                 hid_parser_main,
 828                 hid_parser_global,
 829                 hid_parser_local,
 830                 hid_parser_reserved
 831         };
 832
 833         if (WARN_ON(device->status & HID_STAT_PARSED))
 834                 return -EBUSY;
 835
 836         start = device->dev_rdesc;
 837         if (WARN_ON(!start))
 838                 return -ENODEV;
 839         size = device->dev_rsize;
 840
 841         buf = kmemdup(start, size, GFP_KERNEL);
 842         if (buf == NULL)
 843                 return -ENOMEM;
 844
 845         if (device->driver->report_fixup)
 846                 start = device->driver->report_fixup(device, buf, &size);
 847         else
 848                 start = buf;
 849
 850         start = kmemdup(start, size, GFP_KERNEL);
 851         kfree(buf);
 852         if (start == NULL)
 853                 return -ENOMEM;
 854
 855         device->rdesc = start;
 856         device->rsize = size;
 857
 858         parser = vzalloc(sizeof(struct hid_parser));
 859         if (!parser) {
 860                 ret = -ENOMEM;
 861                 goto err;
 862         }
 863
 864         parser->device = device;
 865
 866         end = start + size;
 867
 868         device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
 869                                      sizeof(struct hid_collection), GFP_KERNEL);
 870         if (!device->collection) {
 871                 ret = -ENOMEM;
 872                 goto err;
 873         }
 874         device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
 875
 876         ret = -EINVAL;
 877         while ((start = fetch_item(start, end, &item)) != NULL) {
 878
 879                 if (item.format != HID_ITEM_FORMAT_SHORT) {
 880                         hid_err(device, "unexpected long global item\n");
 881                         goto err;
 882                 }
 883
 884                 if (dispatch_type[item.type](parser, &item)) {
 885                         hid_err(device, "item %u %u %u %u parsing failed\n",
 886                                 item.format, (unsigned)item.size,
 887                                 (unsigned)item.type, (unsigned)item.tag);
 888                         goto err;
 889                 }
 890
 891                 if (start == end) {
 892                         if (parser->collection_stack_ptr) {
 893                                 hid_err(device, "unbalanced collection at end of report description\n");
 894                                 goto err;
 895                         }
 896                         if (parser->local.delimiter_depth) {
 897                                 hid_err(device, "unbalanced delimiter at end of report description\n");
 898                                 goto err;
 899                         }
 900                         vfree(parser);
 901                         device->status |= HID_STAT_PARSED;
 902                         return 0;
 903                 }
 904         }
 905
 906         hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
 907 err:
 908         vfree(parser);
 909         hid_close_report(device);
 910         return ret;
 911 }
 912 EXPORT_SYMBOL_GPL(hid_open_report);
 913
 914 /*
 915  * Convert a signed n-bit integer to signed 32-bit integer. Common
 916  * cases are done through the compiler, the screwed things has to be
 917  * done by hand.
 918  */
 919
 920 static s32 snto32(__u32 value, unsigned n)
 921 {
 922         switch (n) {
 923         case 8:  return ((__s8)value);
 924         case 16: return ((__s16)value);
 925         case 32: return ((__s32)value);
 926         }
 927         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
 928 }
 929
 930 s32 hid_snto32(__u32 value, unsigned n)
 931 {
 932         return snto32(value, n);
 933 }
 934 EXPORT_SYMBOL_GPL(hid_snto32);
 935
 936 /*
 937  * Convert a signed 32-bit integer to a signed n-bit integer.
 938  */
 939
 940 static u32 s32ton(__s32 value, unsigned n)
 941 {
 942         s32 a = value >> (n - 1);
 943         if (a && a != -1)
 944                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
 945         return value & ((1 << n) - 1);
 946 }
 947
 948 /*
 949  * Extract/implement a data field from/to a little endian report (bit array).
 950  *
 951  * Code sort-of follows HID spec:
 952  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
 953  *
 954  * While the USB HID spec allows unlimited length bit fields in "report
 955  * descriptors", most devices never use more than 16 bits.
 956  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
 957  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
 958  */
 959
 960 static __u32 extract(const struct hid_device *hid, __u8 *report,
 961                      unsigned offset, unsigned n)
 962 {
 963         u64 x;
 964
 965         if (n > 32)
 966                 hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
 967                          n, current->comm);
 968
 969         report += offset >> 3;  /* adjust byte index */
 970         offset &= 7;            /* now only need bit offset into one byte */
 971         x = get_unaligned_le64(report);
 972         x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
 973         return (u32) x;
 974 }
 975
 976 /*
 977  * "implement" : set bits in a little endian bit stream.
 978  * Same concepts as "extract" (see comments above).
 979  * The data mangled in the bit stream remains in little endian
 980  * order the whole time. It make more sense to talk about
 981  * endianness of register values by considering a register
 982  * a "cached" copy of the little endiad bit stream.
 983  */
 984 static void implement(const struct hid_device *hid, __u8 *report,
 985                       unsigned offset, unsigned n, __u32 value)
 986 {
 987         u64 x;
 988         u64 m = (1ULL << n) - 1;
 989
 990         if (n > 32)
 991                 hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
 992                          __func__, n, current->comm);
 993
 994         if (value > m)
 995                 hid_warn(hid, "%s() called with too large value %d! (%s)\n",
 996                          __func__, value, current->comm);
 997         WARN_ON(value > m);
 998         value &= m;
 999
1000         report += offset >> 3;
1001         offset &= 7;
1002
1003         x = get_unaligned_le64(report);
1004         x &= ~(m << offset);
1005         x |= ((u64)value) << offset;
1006         put_unaligned_le64(x, report);
1007 }
1008
1009 /*
1010  * Search an array for a value.
1011  */
1012
1013 static int search(__s32 *array, __s32 value, unsigned n)
1014 {
1015         while (n--) {
1016                 if (*array++ == value)
1017                         return 0;
1018         }
1019         return -1;
1020 }
1021
1022 /**
1023  * hid_match_report - check if driver's raw_event should be called
1024  *
1025  * @hid: hid device
1026  * @report_type: type to match against
1027  *
1028  * compare hid->driver->report_table->report_type to report->type
1029  */
1030 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
1031 {
1032         const struct hid_report_id *id = hid->driver->report_table;
1033
1034         if (!id) /* NULL means all */
1035                 return 1;
1036
1037         for (; id->report_type != HID_TERMINATOR; id++)
1038                 if (id->report_type == HID_ANY_ID ||
1039                                 id->report_type == report->type)
1040                         return 1;
1041         return 0;
1042 }
1043
1044 /**
1045  * hid_match_usage - check if driver's event should be called
1046  *
1047  * @hid: hid device
1048  * @usage: usage to match against
1049  *
1050  * compare hid->driver->usage_table->usage_{type,code} to
1051  * usage->usage_{type,code}
1052  */
1053 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1054 {
1055         const struct hid_usage_id *id = hid->driver->usage_table;
1056
1057         if (!id) /* NULL means all */
1058                 return 1;
1059
1060         for (; id->usage_type != HID_ANY_ID - 1; id++)
1061                 if ((id->usage_hid == HID_ANY_ID ||
1062                                 id->usage_hid == usage->hid) &&
1063                                 (id->usage_type == HID_ANY_ID ||
1064                                 id->usage_type == usage->type) &&
1065                                 (id->usage_code == HID_ANY_ID ||
1066                                  id->usage_code == usage->code))
1067                         return 1;
1068         return 0;
1069 }
1070
1071 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1072                 struct hid_usage *usage, __s32 value, int interrupt)
1073 {
1074         struct hid_driver *hdrv = hid->driver;
1075         int ret;
1076
1077         if (!list_empty(&hid->debug_list))
1078                 hid_dump_input(hid, usage, value);
1079
1080         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1081                 ret = hdrv->event(hid, field, usage, value);
1082                 if (ret != 0) {
1083                         if (ret < 0)
1084                                 hid_err(hid, "%s's event failed with %d\n",
1085                                                 hdrv->name, ret);
1086                         return;
1087                 }
1088         }
1089
1090         if (hid->claimed & HID_CLAIMED_INPUT)
1091                 hidinput_hid_event(hid, field, usage, value);
1092         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1093                 hid->hiddev_hid_event(hid, field, usage, value);
1094 }
1095
1096 /*
1097  * Analyse a received field, and fetch the data from it. The field
1098  * content is stored for next report processing (we do differential
1099  * reporting to the layer).
1100  */
1101
1102 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1103                             __u8 *data, int interrupt)
1104 {
1105         unsigned n;
1106         unsigned count = field->report_count;
1107         unsigned offset = field->report_offset;
1108         unsigned size = field->report_size;
1109         __s32 min = field->logical_minimum;
1110         __s32 max = field->logical_maximum;
1111         __s32 *value;
1112
1113         value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1114         if (!value)
1115                 return;
1116
1117         for (n = 0; n < count; n++) {
1118
1119                 value[n] = min < 0 ?
1120                         snto32(extract(hid, data, offset + n * size, size),
1121                                size) :
1122                         extract(hid, data, offset + n * size, size);
1123
1124                 /* Ignore report if ErrorRollOver */
1125                 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1126                     value[n] >= min && value[n] <= max &&
1127                     field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1128                         goto exit;
1129         }
1130
1131         for (n = 0; n < count; n++) {
1132
1133                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1134                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1135                         continue;
1136                 }
1137
1138                 if (field->value[n] >= min && field->value[n] <= max
1139                         && field->usage[field->value[n] - min].hid
1140                         && search(value, field->value[n], count))
1141                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1142
1143                 if (value[n] >= min && value[n] <= max
1144                         && field->usage[value[n] - min].hid
1145                         && search(field->value, value[n], count))
1146                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1147         }
1148
1149         memcpy(field->value, value, count * sizeof(__s32));
1150 exit:
1151         kfree(value);
1152 }
1153
1154 /*
1155  * Output the field into the report.
1156  */
1157
1158 static void hid_output_field(const struct hid_device *hid,
1159                              struct hid_field *field, __u8 *data)
1160 {
1161         unsigned count = field->report_count;
1162         unsigned offset = field->report_offset;
1163         unsigned size = field->report_size;
1164         unsigned n;
1165
1166         for (n = 0; n < count; n++) {
1167                 if (field->logical_minimum < 0) /* signed values */
1168                         implement(hid, data, offset + n * size, size,
1169                                   s32ton(field->value[n], size));
1170                 else                            /* unsigned values */
1171                         implement(hid, data, offset + n * size, size,
1172                                   field->value[n]);
1173         }
1174 }
1175
1176 /*
1177  * Create a report. 'data' has to be allocated using
1178  * hid_alloc_report_buf() so that it has proper size.
1179  */
1180
1181 void hid_output_report(struct hid_report *report, __u8 *data)
1182 {
1183         unsigned n;
1184
1185         if (report->id > 0)
1186                 *data++ = report->id;
1187
1188         memset(data, 0, ((report->size - 1) >> 3) + 1);
1189         for (n = 0; n < report->maxfield; n++)
1190                 hid_output_field(report->device, report->field[n], data);
1191 }
1192 EXPORT_SYMBOL_GPL(hid_output_report);
1193
1194 /*
1195  * Allocator for buffer that is going to be passed to hid_output_report()
1196  */
1197 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
1198 {
1199         /*
1200          * 7 extra bytes are necessary to achieve proper functionality
1201          * of implement() working on 8 byte chunks
1202          */
1203
1204         int len = ((report->size - 1) >> 3) + 1 + (report->id > 0) + 7;
1205
1206         return kmalloc(len, flags);
1207 }
1208 EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
1209
1210 /*
1211  * Set a field value. The report this field belongs to has to be
1212  * created and transferred to the device, to set this value in the
1213  * device.
1214  */
1215
1216 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1217 {
1218         unsigned size;
1219
1220         if (!field)
1221                 return -1;
1222
1223         size = field->report_size;
1224
1225         hid_dump_input(field->report->device, field->usage + offset, value);
1226
1227         if (offset >= field->report_count) {
1228                 hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1229                                 offset, field->report_count);
1230                 return -1;
1231         }
1232         if (field->logical_minimum < 0) {
1233                 if (value != snto32(s32ton(value, size), size)) {
1234                         hid_err(field->report->device, "value %d is out of range\n", value);
1235                         return -1;
1236                 }
1237         }
1238         field->value[offset] = value;
1239         return 0;
1240 }
1241 EXPORT_SYMBOL_GPL(hid_set_field);
1242
1243 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1244                 const u8 *data)
1245 {
1246         struct hid_report *report;
1247         unsigned int n = 0;     /* Normally report number is 0 */
1248
1249         /* Device uses numbered reports, data[0] is report number */
1250         if (report_enum->numbered)
1251                 n = *data;
1252
1253         report = report_enum->report_id_hash[n];
1254         if (report == NULL)
1255                 dbg_hid("undefined report_id %u received\n", n);
1256
1257         return report;
1258 }
1259
1260 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1261                 int interrupt)
1262 {
1263         struct hid_report_enum *report_enum = hid->report_enum + type;
1264         struct hid_report *report;
1265         struct hid_driver *hdrv;
1266         unsigned int a;
1267         int rsize, csize = size;
1268         u8 *cdata = data;
1269         int ret = 0;
1270
1271         report = hid_get_report(report_enum, data);
1272         if (!report)
1273                 goto out;
1274
1275         if (report_enum->numbered) {
1276                 cdata++;
1277                 csize--;
1278         }
1279
1280         rsize = ((report->size - 1) >> 3) + 1;
1281
1282         if (rsize > HID_MAX_BUFFER_SIZE)
1283                 rsize = HID_MAX_BUFFER_SIZE;
1284
1285         if (csize < rsize) {
1286                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1287                                 csize, rsize);
1288                 memset(cdata + csize, 0, rsize - csize);
1289         }
1290
1291         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1292                 hid->hiddev_report_event(hid, report);
1293         if (hid->claimed & HID_CLAIMED_HIDRAW) {
1294                 ret = hidraw_report_event(hid, data, size);
1295                 if (ret)
1296                         goto out;
1297         }
1298
1299         if (hid->claimed != HID_CLAIMED_HIDRAW) {
1300                 for (a = 0; a < report->maxfield; a++)
1301                         hid_input_field(hid, report->field[a], cdata, interrupt);
1302                 hdrv = hid->driver;
1303                 if (hdrv && hdrv->report)
1304                         hdrv->report(hid, report);
1305         }
1306
1307         if (hid->claimed & HID_CLAIMED_INPUT)
1308                 hidinput_report_event(hid, report);
1309 out:
1310         return ret;
1311 }
1312 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1313
1314 /**
1315  * hid_input_report - report data from lower layer (usb, bt...)
1316  *
1317  * @hid: hid device
1318  * @type: HID report type (HID_*_REPORT)
1319  * @data: report contents
1320  * @size: size of data parameter
1321  * @interrupt: distinguish between interrupt and control transfers
1322  *
1323  * This is data entry for lower layers.
1324  */
1325 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1326 {
1327         struct hid_report_enum *report_enum;
1328         struct hid_driver *hdrv;
1329         struct hid_report *report;
1330         int ret = 0;
1331
1332         if (!hid)
1333                 return -ENODEV;
1334
1335         if (down_trylock(&hid->driver_input_lock))
1336                 return -EBUSY;
1337
1338         if (!hid->driver) {
1339                 ret = -ENODEV;
1340                 goto unlock;
1341         }
1342         report_enum = hid->report_enum + type;
1343         hdrv = hid->driver;
1344
1345         if (!size) {
1346                 dbg_hid("empty report\n");
1347                 ret = -1;
1348                 goto unlock;
1349         }
1350
1351         /* Avoid unnecessary overhead if debugfs is disabled */
1352         if (!list_empty(&hid->debug_list))
1353                 hid_dump_report(hid, type, data, size);
1354
1355         report = hid_get_report(report_enum, data);
1356
1357         if (!report) {
1358                 ret = -1;
1359                 goto unlock;
1360         }
1361
1362         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1363                 ret = hdrv->raw_event(hid, report, data, size);
1364                 if (ret < 0) {
1365                         ret = ret < 0 ? ret : 0;
1366                         goto unlock;
1367                 }
1368         }
1369
1370         ret = hid_report_raw_event(hid, type, data, size, interrupt);
1371
1372 unlock:
1373         up(&hid->driver_input_lock);
1374         return ret;
1375 }
1376 EXPORT_SYMBOL_GPL(hid_input_report);
1377
1378 static bool hid_match_one_id(struct hid_device *hdev,
1379                 const struct hid_device_id *id)
1380 {
1381         return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1382                 (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1383                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1384                 (id->product == HID_ANY_ID || id->product == hdev->product);
1385 }
1386
1387 const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1388                 const struct hid_device_id *id)
1389 {
1390         for (; id->bus; id++)
1391                 if (hid_match_one_id(hdev, id))
1392                         return id;
1393
1394         return NULL;
1395 }
1396
1397 static const struct hid_device_id hid_hiddev_list[] = {
1398         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1399         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1400         { }
1401 };
1402
1403 static bool hid_hiddev(struct hid_device *hdev)
1404 {
1405         return !!hid_match_id(hdev, hid_hiddev_list);
1406 }
1407
1408
1409 static ssize_t
1410 read_report_descriptor(struct file *filp, struct kobject *kobj,
1411                 struct bin_attribute *attr,
1412                 char *buf, loff_t off, size_t count)
1413 {
1414         struct device *dev = container_of(kobj, struct device, kobj);
1415         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1416
1417         if (off >= hdev->rsize)
1418                 return 0;
1419
1420         if (off + count > hdev->rsize)
1421                 count = hdev->rsize - off;
1422
1423         memcpy(buf, hdev->rdesc + off, count);
1424
1425         return count;
1426 }
1427
1428 static struct bin_attribute dev_bin_attr_report_desc = {
1429         .attr = { .name = "report_descriptor", .mode = 0444 },
1430         .read = read_report_descriptor,
1431         .size = HID_MAX_DESCRIPTOR_SIZE,
1432 };
1433
1434 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1435 {
1436         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1437                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1438                 "Multi-Axis Controller"
1439         };
1440         const char *type, *bus;
1441         char buf[64];
1442         unsigned int i;
1443         int len;
1444         int ret;
1445
1446         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1447                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1448         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1449                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1450         if (hdev->bus != BUS_USB)
1451                 connect_mask &= ~HID_CONNECT_HIDDEV;
1452         if (hid_hiddev(hdev))
1453                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1454
1455         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1456                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1457                 hdev->claimed |= HID_CLAIMED_INPUT;
1458
1459         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1460                         !hdev->hiddev_connect(hdev,
1461                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1462                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1463         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1464                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1465
1466         /* Drivers with the ->raw_event callback set are not required to connect
1467          * to any other listener. */
1468         if (!hdev->claimed && !hdev->driver->raw_event) {
1469                 hid_err(hdev, "device has no listeners, quitting\n");
1470                 return -ENODEV;
1471         }
1472
1473         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1474                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1475                 hdev->ff_init(hdev);
1476
1477         len = 0;
1478         if (hdev->claimed & HID_CLAIMED_INPUT)
1479                 len += sprintf(buf + len, "input");
1480         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1481                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1482                                 hdev->minor);
1483         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1484                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1485                                 ((struct hidraw *)hdev->hidraw)->minor);
1486
1487         type = "Device";
1488         for (i = 0; i < hdev->maxcollection; i++) {
1489                 struct hid_collection *col = &hdev->collection[i];
1490                 if (col->type == HID_COLLECTION_APPLICATION &&
1491                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1492                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1493                         type = types[col->usage & 0xffff];
1494                         break;
1495                 }
1496         }
1497
1498         switch (hdev->bus) {
1499         case BUS_USB:
1500                 bus = "USB";
1501                 break;
1502         case BUS_BLUETOOTH:
1503                 bus = "BLUETOOTH";
1504                 break;
1505         default:
1506                 bus = "<UNKNOWN>";
1507         }
1508
1509         ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1510         if (ret)
1511                 hid_warn(hdev,
1512                          "can't create sysfs report descriptor attribute err: %d\n", ret);
1513
1514         hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1515                  buf, bus, hdev->version >> 8, hdev->version & 0xff,
1516                  type, hdev->name, hdev->phys);
1517
1518         return 0;
1519 }
1520 EXPORT_SYMBOL_GPL(hid_connect);
1521
1522 void hid_disconnect(struct hid_device *hdev)
1523 {
1524         device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1525         if (hdev->claimed & HID_CLAIMED_INPUT)
1526                 hidinput_disconnect(hdev);
1527         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1528                 hdev->hiddev_disconnect(hdev);
1529         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1530                 hidraw_disconnect(hdev);
1531 }
1532 EXPORT_SYMBOL_GPL(hid_disconnect);
1533
1534 /*
1535  * A list of devices for which there is a specialized driver on HID bus.
1536  *
1537  * Please note that for multitouch devices (driven by hid-multitouch driver),
1538  * there is a proper autodetection and autoloading in place (based on presence
1539  * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1540  * as we are doing the right thing in hid_scan_usage().
1541  *
1542  * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1543  * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1544  * used as a driver. See hid_scan_report().
1545  */
1546 static const struct hid_device_id hid_have_special_driver[] = {
1547         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1548         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1549         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1550         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1551         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1552         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1553         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1554         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1555         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1556         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1557         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1558         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1559         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1560         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1561         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1562         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1563         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1564         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1565         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1566         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1567         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1568         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1569         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1570         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1571         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1572         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1573         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1574         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1575         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1576         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1577         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1578         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1579         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1580         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1581         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1582         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1583         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1584         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1585         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1586         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1587         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1588         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1589         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1590         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1591         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1592         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1593         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1594         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1595         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1596         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1597         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1598         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1599         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1600         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1601         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1602         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1603         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1604         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1605         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1606         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1607         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1608         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1609         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1610         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1611         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1612         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1613         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1614         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1615         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1616         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1617         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1618         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1619         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1620         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1621         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1622         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1623         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1624         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1625         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1626         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1627         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1628         { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1629         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1630         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1631         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1632         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1633         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1634         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1635         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1636         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1637         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1638         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1639         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1640         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1641         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1642         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1643         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1644         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1645         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1646         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1647         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
1648         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
1649         { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1650         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1651         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1652         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1653         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1654         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1655         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1656         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1657         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1658         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1659         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1660         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
1661         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
1662         { HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_580) },
1663         { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1664         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1665         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1666         { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1667         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
1668         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
1669         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1670         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1671         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1672         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1673         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1674         { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1675 #if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
1676         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1677 #endif
1678         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1679         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1680         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1681         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1682         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1683         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1684         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1685         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1686         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1687         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1688         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1689         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1690         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1691         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1692         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1693         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1694         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1695         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1696         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1697         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1698         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1699         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1700         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1701         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1702         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1703 #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1704         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1705         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1706 #endif
1707         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1708         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1709         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1710         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1711         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1712         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1713         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1714         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1715         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1716         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1717         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1718         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1719         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1720         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1721         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1722         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1723         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1724         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1725         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1726         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1727         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1728         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1729         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1730         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1731         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1732         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1733         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1734         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1735         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1736         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1737         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1738         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1739         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1740         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1741         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1742         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1743         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1744         { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1745 #if IS_ENABLED(CONFIG_HID_ROCCAT)
1746         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1747         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1748         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1749         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1750         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
1751         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
1752         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1753         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
1754         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1755         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1756         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1757 #endif
1758         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1759         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1760         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1761         { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1762         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
1763         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
1764         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1765         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1766         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1767         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1768         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1769         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
1770         { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
1771         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1772         { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
1773         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1774         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1775         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1776         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1777         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1778         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1779         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1780         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1781         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1782         { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1783         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1784         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1785         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1786         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1787         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1788         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1789         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1790         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1791         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1792         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1793         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1794         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1795         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1796         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1797         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1798         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1799         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1800         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
1801         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1802         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1803         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1804         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1805         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1806         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1807         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1808         { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1809         { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
1810         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1811         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1812         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1813
1814         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1815         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1816         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1817         { }
1818 };
1819
1820 struct hid_dynid {
1821         struct list_head list;
1822         struct hid_device_id id;
1823 };
1824
1825 /**
1826  * store_new_id - add a new HID device ID to this driver and re-probe devices
1827  * @driver: target device driver
1828  * @buf: buffer for scanning device ID data
1829  * @count: input size
1830  *
1831  * Adds a new dynamic hid device ID to this driver,
1832  * and causes the driver to probe for all devices again.
1833  */
1834 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1835                 size_t count)
1836 {
1837         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1838         struct hid_dynid *dynid;
1839         __u32 bus, vendor, product;
1840         unsigned long driver_data = 0;
1841         int ret;
1842
1843         ret = sscanf(buf, "%x %x %x %lx",
1844                         &bus, &vendor, &product, &driver_data);
1845         if (ret < 3)
1846                 return -EINVAL;
1847
1848         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1849         if (!dynid)
1850                 return -ENOMEM;
1851
1852         dynid->id.bus = bus;
1853         dynid->id.group = HID_GROUP_ANY;
1854         dynid->id.vendor = vendor;
1855         dynid->id.product = product;
1856         dynid->id.driver_data = driver_data;
1857
1858         spin_lock(&hdrv->dyn_lock);
1859         list_add_tail(&dynid->list, &hdrv->dyn_list);
1860         spin_unlock(&hdrv->dyn_lock);
1861
1862         ret = driver_attach(&hdrv->driver);
1863
1864         return ret ? : count;
1865 }
1866 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1867
1868 static void hid_free_dynids(struct hid_driver *hdrv)
1869 {
1870         struct hid_dynid *dynid, *n;
1871
1872         spin_lock(&hdrv->dyn_lock);
1873         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1874                 list_del(&dynid->list);
1875                 kfree(dynid);
1876         }
1877         spin_unlock(&hdrv->dyn_lock);
1878 }
1879
1880 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1881                 struct hid_driver *hdrv)
1882 {
1883         struct hid_dynid *dynid;
1884
1885         spin_lock(&hdrv->dyn_lock);
1886         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1887                 if (hid_match_one_id(hdev, &dynid->id)) {
1888                         spin_unlock(&hdrv->dyn_lock);
1889                         return &dynid->id;
1890                 }
1891         }
1892         spin_unlock(&hdrv->dyn_lock);
1893
1894         return hid_match_id(hdev, hdrv->id_table);
1895 }
1896
1897 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1898 {
1899         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1900         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1901
1902         return hid_match_device(hdev, hdrv) != NULL;
1903 }
1904
1905 static int hid_device_probe(struct device *dev)
1906 {
1907         struct hid_driver *hdrv = container_of(dev->driver,
1908                         struct hid_driver, driver);
1909         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1910         const struct hid_device_id *id;
1911         int ret = 0;
1912
1913         if (down_interruptible(&hdev->driver_lock))
1914                 return -EINTR;
1915         if (down_interruptible(&hdev->driver_input_lock)) {
1916                 ret = -EINTR;
1917                 goto unlock_driver_lock;
1918         }
1919         hdev->io_started = false;
1920
1921         if (!hdev->driver) {
1922                 id = hid_match_device(hdev, hdrv);
1923                 if (id == NULL) {
1924                         ret = -ENODEV;
1925                         goto unlock;
1926                 }
1927
1928                 hdev->driver = hdrv;
1929                 if (hdrv->probe) {
1930                         ret = hdrv->probe(hdev, id);
1931                 } else { /* default probe */
1932                         ret = hid_open_report(hdev);
1933                         if (!ret)
1934                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1935                 }
1936                 if (ret) {
1937                         hid_close_report(hdev);
1938                         hdev->driver = NULL;
1939                 }
1940         }
1941 unlock:
1942         if (!hdev->io_started)
1943                 up(&hdev->driver_input_lock);
1944 unlock_driver_lock:
1945         up(&hdev->driver_lock);
1946         return ret;
1947 }
1948
1949 static int hid_device_remove(struct device *dev)
1950 {
1951         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1952         struct hid_driver *hdrv;
1953         int ret = 0;
1954
1955         if (down_interruptible(&hdev->driver_lock))
1956                 return -EINTR;
1957         if (down_interruptible(&hdev->driver_input_lock)) {
1958                 ret = -EINTR;
1959                 goto unlock_driver_lock;
1960         }
1961         hdev->io_started = false;
1962
1963         hdrv = hdev->driver;
1964         if (hdrv) {
1965                 if (hdrv->remove)
1966                         hdrv->remove(hdev);
1967                 else /* default remove */
1968                         hid_hw_stop(hdev);
1969                 hid_close_report(hdev);
1970                 hdev->driver = NULL;
1971         }
1972
1973         if (!hdev->io_started)
1974                 up(&hdev->driver_input_lock);
1975 unlock_driver_lock:
1976         up(&hdev->driver_lock);
1977         return ret;
1978 }
1979
1980 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
1981                              char *buf)
1982 {
1983         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1984         int len;
1985
1986         len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
1987                        hdev->bus, hdev->group, hdev->vendor, hdev->product);
1988
1989         return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
1990 }
1991
1992 static struct device_attribute hid_dev_attrs[] = {
1993         __ATTR_RO(modalias),
1994         __ATTR_NULL,
1995 };
1996
1997 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1998 {
1999         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2000
2001         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
2002                         hdev->bus, hdev->vendor, hdev->product))
2003                 return -ENOMEM;
2004
2005         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
2006                 return -ENOMEM;
2007
2008         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
2009                 return -ENOMEM;
2010
2011         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
2012                 return -ENOMEM;
2013
2014         if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
2015                            hdev->bus, hdev->group, hdev->vendor, hdev->product))
2016                 return -ENOMEM;
2017
2018         return 0;
2019 }
2020
2021 static struct bus_type hid_bus_type = {
2022         .name           = "hid",
2023         .dev_attrs      = hid_dev_attrs,
2024         .match          = hid_bus_match,
2025         .probe          = hid_device_probe,
2026         .remove         = hid_device_remove,
2027         .uevent         = hid_uevent,
2028 };
2029
2030 /* a list of devices that shouldn't be handled by HID core at all */
2031 static const struct hid_device_id hid_ignore_list[] = {
2032         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
2033         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
2034         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
2035         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
2036         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
2037         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
2038         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
2039         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
2040         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
2041         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
2042         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
2043         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
2044         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
2045         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
2046         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
2047         { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
2048         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
2049         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
2050         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
2051         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
2052         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
2053         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
2054         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
2055         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
2056         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
2057         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
2058         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
2059         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
2060         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
2061         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
2062         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
2063         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
2064         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
2065         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
2066         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
2067         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
2068         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
2069         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
2070         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
2071         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
2072         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
2073         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2074         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2075         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2076         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2077         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2078         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2079         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2080         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2081         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2082         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2083         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2084         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2085         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2086         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2087         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2088         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2089         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2090         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2091         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2092         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2093         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2094         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2095         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2096         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2097         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2098         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2099         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2100         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2101         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2102         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2103         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2104         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2105         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2106         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2107         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2108         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2109         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2110         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2111         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2112         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2113         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2114         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2115         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2116         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2117         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2118         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2119         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2120         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2121         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2122         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2123         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2124         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2125         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2126         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2127         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
2128         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
2129         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2130         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2131         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2132         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2133         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2134         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2135         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2136         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2137         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2138         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2139         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2140         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2141         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2142         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2143         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2144         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2145         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2146         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2147         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2148         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2149         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2150         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2151         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2152         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2153         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2154         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2155         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2156         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2157         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2158         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2159         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2160         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2161         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2162         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2163         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2164         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2165         { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2166         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2167         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2168         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2169         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2170         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2171         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2172         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2173         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2174         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2175         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2176         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2177         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2178         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2179         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2180         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2181         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2182         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2183         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2184         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2185         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2186         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2187 #if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2188         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2189         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2190         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2191         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2192         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2193         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2194         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2195         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2196 #endif
2197         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2198         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2199         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2200         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2201         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2202         { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
2203         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2204         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2205         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2206         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2207         { }
2208 };
2209
2210 /**
2211  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2212  *
2213  * There are composite devices for which we want to ignore only a certain
2214  * interface. This is a list of devices for which only the mouse interface will
2215  * be ignored. This allows a dedicated driver to take care of the interface.
2216  */
2217 static const struct hid_device_id hid_mouse_ignore_list[] = {
2218         /* appletouch driver */
2219         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2220         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2221         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2222         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2223         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2224         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2225         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2226         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2227         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2228         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2229         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2230         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2231         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2232         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2233         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2234         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2235         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2236         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2237         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2238         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2239         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2240         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2241         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2242         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2243         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2244         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2245         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2246         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2247         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2248         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2249         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2250         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2251         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2252         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2253         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2254         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2255         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2256         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2257         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2258         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2259         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2260         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2261         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2262         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2263         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2264         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2265         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2266         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2267         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2268         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2269         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2270         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2271         { }
2272 };
2273
2274 bool hid_ignore(struct hid_device *hdev)
2275 {
2276         if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2277                 return false;
2278         if (hdev->quirks & HID_QUIRK_IGNORE)
2279                 return true;
2280
2281         switch (hdev->vendor) {
2282         case USB_VENDOR_ID_CODEMERCS:
2283                 /* ignore all Code Mercenaries IOWarrior devices */
2284                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2285                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2286                         return true;
2287                 break;
2288         case USB_VENDOR_ID_LOGITECH:
2289                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2290                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2291                         return true;
2292                 /*
2293                  * The Keene FM transmitter USB device has the same USB ID as
2294                  * the Logitech AudioHub Speaker, but it should ignore the hid.
2295                  * Check if the name is that of the Keene device.
2296                  * For reference: the name of the AudioHub is
2297                  * "HOLTEK  AudioHub Speaker".
2298                  */
2299                 if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2300                         !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2301                                 return true;
2302                 break;
2303         case USB_VENDOR_ID_SOUNDGRAPH:
2304                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2305                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2306                         return true;
2307                 break;
2308         case USB_VENDOR_ID_HANWANG:
2309                 if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2310                     hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2311                         return true;
2312                 break;
2313         case USB_VENDOR_ID_JESS:
2314                 if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2315                                 hdev->type == HID_TYPE_USBNONE)
2316                         return true;
2317                 break;
2318         case USB_VENDOR_ID_DWAV:
2319                 /* These are handled by usbtouchscreen. hdev->type is probably
2320                  * HID_TYPE_USBNONE, but we say !HID_TYPE_USBMOUSE to match
2321                  * usbtouchscreen. */
2322                 if ((hdev->product == USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER ||
2323                      hdev->product == USB_DEVICE_ID_DWAV_TOUCHCONTROLLER) &&
2324                     hdev->type != HID_TYPE_USBMOUSE)
2325                         return true;
2326                 break;
2327         case USB_VENDOR_ID_VELLEMAN:
2328                 /* These are not HID devices.  They are handled by comedi. */
2329                 if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2330                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2331                     (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2332                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2333                         return true;
2334                 break;
2335         case USB_VENDOR_ID_ATMEL_V_USB:
2336                 /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2337                  * it has the same USB ID as many Atmel V-USB devices. This
2338                  * usb radio is handled by radio-ma901.c driver so we want
2339                  * ignore the hid. Check the name, bus, product and ignore
2340                  * if we have MA901 usb radio.
2341                  */
2342                 if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2343                         hdev->bus == BUS_USB &&
2344                         strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2345                         return true;
2346                 break;
2347         }
2348
2349         if (hdev->type == HID_TYPE_USBMOUSE &&
2350                         hid_match_id(hdev, hid_mouse_ignore_list))
2351                 return true;
2352
2353         return !!hid_match_id(hdev, hid_ignore_list);
2354 }
2355 EXPORT_SYMBOL_GPL(hid_ignore);
2356
2357 int hid_add_device(struct hid_device *hdev)
2358 {
2359         static atomic_t id = ATOMIC_INIT(0);
2360         int ret;
2361
2362         if (WARN_ON(hdev->status & HID_STAT_ADDED))
2363                 return -EBUSY;
2364
2365         /* we need to kill them here, otherwise they will stay allocated to
2366          * wait for coming driver */
2367         if (hid_ignore(hdev))
2368                 return -ENODEV;
2369
2370         /*
2371          * Read the device report descriptor once and use as template
2372          * for the driver-specific modifications.
2373          */
2374         ret = hdev->ll_driver->parse(hdev);
2375         if (ret)
2376                 return ret;
2377         if (!hdev->dev_rdesc)
2378                 return -ENODEV;
2379
2380         /*
2381          * Scan generic devices for group information
2382          */
2383         if (hid_ignore_special_drivers ||
2384             !hid_match_id(hdev, hid_have_special_driver)) {
2385                 ret = hid_scan_report(hdev);
2386                 if (ret)
2387                         hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2388         }
2389
2390         /* XXX hack, any other cleaner solution after the driver core
2391          * is converted to allow more than 20 bytes as the device name? */
2392         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2393                      hdev->vendor, hdev->product, atomic_inc_return(&id));
2394
2395         hid_debug_register(hdev, dev_name(&hdev->dev));
2396         ret = device_add(&hdev->dev);
2397         if (!ret)
2398                 hdev->status |= HID_STAT_ADDED;
2399         else
2400                 hid_debug_unregister(hdev);
2401
2402         return ret;
2403 }
2404 EXPORT_SYMBOL_GPL(hid_add_device);
2405
2406 /**
2407  * hid_allocate_device - allocate new hid device descriptor
2408  *
2409  * Allocate and initialize hid device, so that hid_destroy_device might be
2410  * used to free it.
2411  *
2412  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2413  * error value.
2414  */
2415 struct hid_device *hid_allocate_device(void)
2416 {
2417         struct hid_device *hdev;
2418         int ret = -ENOMEM;
2419
2420         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2421         if (hdev == NULL)
2422                 return ERR_PTR(ret);
2423
2424         device_initialize(&hdev->dev);
2425         hdev->dev.release = hid_device_release;
2426         hdev->dev.bus = &hid_bus_type;
2427
2428         hid_close_report(hdev);
2429
2430         init_waitqueue_head(&hdev->debug_wait);
2431         INIT_LIST_HEAD(&hdev->debug_list);
2432         spin_lock_init(&hdev->debug_list_lock);
2433         sema_init(&hdev->driver_lock, 1);
2434         sema_init(&hdev->driver_input_lock, 1);
2435
2436         return hdev;
2437 }
2438 EXPORT_SYMBOL_GPL(hid_allocate_device);
2439
2440 static void hid_remove_device(struct hid_device *hdev)
2441 {
2442         if (hdev->status & HID_STAT_ADDED) {
2443                 device_del(&hdev->dev);
2444                 hid_debug_unregister(hdev);
2445                 hdev->status &= ~HID_STAT_ADDED;
2446         }
2447         kfree(hdev->dev_rdesc);
2448         hdev->dev_rdesc = NULL;
2449         hdev->dev_rsize = 0;
2450 }
2451
2452 /**
2453  * hid_destroy_device - free previously allocated device
2454  *
2455  * @hdev: hid device
2456  *
2457  * If you allocate hid_device through hid_allocate_device, you should ever
2458  * free by this function.
2459  */
2460 void hid_destroy_device(struct hid_device *hdev)
2461 {
2462         hid_remove_device(hdev);
2463         put_device(&hdev->dev);
2464 }
2465 EXPORT_SYMBOL_GPL(hid_destroy_device);
2466
2467 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2468                 const char *mod_name)
2469 {
2470         int ret;
2471
2472         hdrv->driver.name = hdrv->name;
2473         hdrv->driver.bus = &hid_bus_type;
2474         hdrv->driver.owner = owner;
2475         hdrv->driver.mod_name = mod_name;
2476
2477         INIT_LIST_HEAD(&hdrv->dyn_list);
2478         spin_lock_init(&hdrv->dyn_lock);
2479
2480         ret = driver_register(&hdrv->driver);
2481         if (ret)
2482                 return ret;
2483
2484         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2485         if (ret)
2486                 driver_unregister(&hdrv->driver);
2487
2488         return ret;
2489 }
2490 EXPORT_SYMBOL_GPL(__hid_register_driver);
2491
2492 void hid_unregister_driver(struct hid_driver *hdrv)
2493 {
2494         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2495         driver_unregister(&hdrv->driver);
2496         hid_free_dynids(hdrv);
2497 }
2498 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2499
2500 int hid_check_keys_pressed(struct hid_device *hid)
2501 {
2502         struct hid_input *hidinput;
2503         int i;
2504
2505         if (!(hid->claimed & HID_CLAIMED_INPUT))
2506                 return 0;
2507
2508         list_for_each_entry(hidinput, &hid->inputs, list) {
2509                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2510                         if (hidinput->input->key[i])
2511                                 return 1;
2512         }
2513
2514         return 0;
2515 }
2516
2517 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2518
2519 static int __init hid_init(void)
2520 {
2521         int ret;
2522
2523         if (hid_debug)
2524                 pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2525                         "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2526
2527         ret = bus_register(&hid_bus_type);
2528         if (ret) {
2529                 pr_err("can't register hid bus\n");
2530                 goto err;
2531         }
2532
2533         ret = hidraw_init();
2534         if (ret)
2535                 goto err_bus;
2536
2537         hid_debug_init();
2538
2539         return 0;
2540 err_bus:
2541         bus_unregister(&hid_bus_type);
2542 err:
2543         return ret;
2544 }
2545
2546 static void __exit hid_exit(void)
2547 {
2548         hid_debug_exit();
2549         hidraw_exit();
2550         bus_unregister(&hid_bus_type);
2551 }
2552
2553 module_init(hid_init);
2554 module_exit(hid_exit);
2555
2556 MODULE_AUTHOR("Andreas Gal");
2557 MODULE_AUTHOR("Vojtech Pavlik");
2558 MODULE_AUTHOR("Jiri Kosina");
2559 MODULE_LICENSE(DRIVER_LICENSE);
2560