drivers/hid/hid-core.c

   1 /*
   2  *  HID support for Linux
   3  *
   4  *  Copyright (c) 1999 Andreas Gal
   5  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
   6  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
   7  *  Copyright (c) 2006-2010 Jiri Kosina
   8  */
   9
  10 /*
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the Free
  13  * Software Foundation; either version 2 of the License, or (at your option)
  14  * any later version.
  15  */
  16
  17 #include <linux/module.h>
  18 #include <linux/slab.h>
  19 #include <linux/init.h>
  20 #include <linux/kernel.h>
  21 #include <linux/list.h>
  22 #include <linux/mm.h>
  23 #include <linux/spinlock.h>
  24 #include <asm/unaligned.h>
  25 #include <asm/byteorder.h>
  26 #include <linux/input.h>
  27 #include <linux/wait.h>
  28 #include <linux/vmalloc.h>
  29 #include <linux/sched.h>
  30
  31 #include <linux/hid.h>
  32 #include <linux/hiddev.h>
  33 #include <linux/hid-debug.h>
  34 #include <linux/hidraw.h>
  35
  36 #include "hid-ids.h"
  37
  38 /*
  39  * Version Information
  40  */
  41
  42 #define DRIVER_DESC "HID core driver"
  43 #define DRIVER_LICENSE "GPL"
  44
  45 int hid_debug = 0;
  46 module_param_named(debug, hid_debug, int, 0600);
  47 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
  48 EXPORT_SYMBOL_GPL(hid_debug);
  49
  50 /*
  51  * Register a new report for a device.
  52  */
  53
  54 struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
  55 {
  56         struct hid_report_enum *report_enum = device->report_enum + type;
  57         struct hid_report *report;
  58
  59         if (report_enum->report_id_hash[id])
  60                 return report_enum->report_id_hash[id];
  61
  62         if (!(report = kzalloc(sizeof(struct hid_report), GFP_KERNEL)))
  63                 return NULL;
  64
  65         if (id != 0)
  66                 report_enum->numbered = 1;
  67
  68         report->id = id;
  69         report->type = type;
  70         report->size = 0;
  71         report->device = device;
  72         report_enum->report_id_hash[id] = report;
  73
  74         list_add_tail(&report->list, &report_enum->report_list);
  75
  76         return report;
  77 }
  78 EXPORT_SYMBOL_GPL(hid_register_report);
  79
  80 /*
  81  * Register a new field for this report.
  82  */
  83
  84 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
  85 {
  86         struct hid_field *field;
  87
  88         if (report->maxfield == HID_MAX_FIELDS) {
  89                 dbg_hid("too many fields in report\n");
  90                 return NULL;
  91         }
  92
  93         if (!(field = kzalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
  94                 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
  95
  96         field->index = report->maxfield++;
  97         report->field[field->index] = field;
  98         field->usage = (struct hid_usage *)(field + 1);
  99         field->value = (s32 *)(field->usage + usages);
 100         field->report = report;
 101
 102         return field;
 103 }
 104
 105 /*
 106  * Open a collection. The type/usage is pushed on the stack.
 107  */
 108
 109 static int open_collection(struct hid_parser *parser, unsigned type)
 110 {
 111         struct hid_collection *collection;
 112         unsigned usage;
 113
 114         usage = parser->local.usage[0];
 115
 116         if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
 117                 dbg_hid("collection stack overflow\n");
 118                 return -1;
 119         }
 120
 121         if (parser->device->maxcollection == parser->device->collection_size) {
 122                 collection = kmalloc(sizeof(struct hid_collection) *
 123                                 parser->device->collection_size * 2, GFP_KERNEL);
 124                 if (collection == NULL) {
 125                         dbg_hid("failed to reallocate collection array\n");
 126                         return -1;
 127                 }
 128                 memcpy(collection, parser->device->collection,
 129                         sizeof(struct hid_collection) *
 130                         parser->device->collection_size);
 131                 memset(collection + parser->device->collection_size, 0,
 132                         sizeof(struct hid_collection) *
 133                         parser->device->collection_size);
 134                 kfree(parser->device->collection);
 135                 parser->device->collection = collection;
 136                 parser->device->collection_size *= 2;
 137         }
 138
 139         parser->collection_stack[parser->collection_stack_ptr++] =
 140                 parser->device->maxcollection;
 141
 142         collection = parser->device->collection +
 143                 parser->device->maxcollection++;
 144         collection->type = type;
 145         collection->usage = usage;
 146         collection->level = parser->collection_stack_ptr - 1;
 147
 148         if (type == HID_COLLECTION_APPLICATION)
 149                 parser->device->maxapplication++;
 150
 151         return 0;
 152 }
 153
 154 /*
 155  * Close a collection.
 156  */
 157
 158 static int close_collection(struct hid_parser *parser)
 159 {
 160         if (!parser->collection_stack_ptr) {
 161                 dbg_hid("collection stack underflow\n");
 162                 return -1;
 163         }
 164         parser->collection_stack_ptr--;
 165         return 0;
 166 }
 167
 168 /*
 169  * Climb up the stack, search for the specified collection type
 170  * and return the usage.
 171  */
 172
 173 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
 174 {
 175         int n;
 176         for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
 177                 if (parser->device->collection[parser->collection_stack[n]].type == type)
 178                         return parser->device->collection[parser->collection_stack[n]].usage;
 179         return 0; /* we know nothing about this usage type */
 180 }
 181
 182 /*
 183  * Add a usage to the temporary parser table.
 184  */
 185
 186 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
 187 {
 188         if (parser->local.usage_index >= HID_MAX_USAGES) {
 189                 dbg_hid("usage index exceeded\n");
 190                 return -1;
 191         }
 192         parser->local.usage[parser->local.usage_index] = usage;
 193         parser->local.collection_index[parser->local.usage_index] =
 194                 parser->collection_stack_ptr ?
 195                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
 196         parser->local.usage_index++;
 197         return 0;
 198 }
 199
 200 /*
 201  * Register a new field for this report.
 202  */
 203
 204 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
 205 {
 206         struct hid_report *report;
 207         struct hid_field *field;
 208         int usages;
 209         unsigned offset;
 210         int i;
 211
 212         if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
 213                 dbg_hid("hid_register_report failed\n");
 214                 return -1;
 215         }
 216
 217         if (parser->global.logical_maximum < parser->global.logical_minimum) {
 218                 dbg_hid("logical range invalid %d %d\n", parser->global.logical_minimum, parser->global.logical_maximum);
 219                 return -1;
 220         }
 221
 222         offset = report->size;
 223         report->size += parser->global.report_size * parser->global.report_count;
 224
 225         if (!parser->local.usage_index) /* Ignore padding fields */
 226                 return 0;
 227
 228         usages = max_t(int, parser->local.usage_index, parser->global.report_count);
 229
 230         if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
 231                 return 0;
 232
 233         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
 234         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
 235         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
 236
 237         for (i = 0; i < usages; i++) {
 238                 int j = i;
 239                 /* Duplicate the last usage we parsed if we have excess values */
 240                 if (i >= parser->local.usage_index)
 241                         j = parser->local.usage_index - 1;
 242                 field->usage[i].hid = parser->local.usage[j];
 243                 field->usage[i].collection_index =
 244                         parser->local.collection_index[j];
 245         }
 246
 247         field->maxusage = usages;
 248         field->flags = flags;
 249         field->report_offset = offset;
 250         field->report_type = report_type;
 251         field->report_size = parser->global.report_size;
 252         field->report_count = parser->global.report_count;
 253         field->logical_minimum = parser->global.logical_minimum;
 254         field->logical_maximum = parser->global.logical_maximum;
 255         field->physical_minimum = parser->global.physical_minimum;
 256         field->physical_maximum = parser->global.physical_maximum;
 257         field->unit_exponent = parser->global.unit_exponent;
 258         field->unit = parser->global.unit;
 259
 260         return 0;
 261 }
 262
 263 /*
 264  * Read data value from item.
 265  */
 266
 267 static u32 item_udata(struct hid_item *item)
 268 {
 269         switch (item->size) {
 270         case 1: return item->data.u8;
 271         case 2: return item->data.u16;
 272         case 4: return item->data.u32;
 273         }
 274         return 0;
 275 }
 276
 277 static s32 item_sdata(struct hid_item *item)
 278 {
 279         switch (item->size) {
 280         case 1: return item->data.s8;
 281         case 2: return item->data.s16;
 282         case 4: return item->data.s32;
 283         }
 284         return 0;
 285 }
 286
 287 /*
 288  * Process a global item.
 289  */
 290
 291 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
 292 {
 293         switch (item->tag) {
 294         case HID_GLOBAL_ITEM_TAG_PUSH:
 295
 296                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
 297                         dbg_hid("global enviroment stack overflow\n");
 298                         return -1;
 299                 }
 300
 301                 memcpy(parser->global_stack + parser->global_stack_ptr++,
 302                         &parser->global, sizeof(struct hid_global));
 303                 return 0;
 304
 305         case HID_GLOBAL_ITEM_TAG_POP:
 306
 307                 if (!parser->global_stack_ptr) {
 308                         dbg_hid("global enviroment stack underflow\n");
 309                         return -1;
 310                 }
 311
 312                 memcpy(&parser->global, parser->global_stack +
 313                         --parser->global_stack_ptr, sizeof(struct hid_global));
 314                 return 0;
 315
 316         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
 317                 parser->global.usage_page = item_udata(item);
 318                 return 0;
 319
 320         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
 321                 parser->global.logical_minimum = item_sdata(item);
 322                 return 0;
 323
 324         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
 325                 if (parser->global.logical_minimum < 0)
 326                         parser->global.logical_maximum = item_sdata(item);
 327                 else
 328                         parser->global.logical_maximum = item_udata(item);
 329                 return 0;
 330
 331         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
 332                 parser->global.physical_minimum = item_sdata(item);
 333                 return 0;
 334
 335         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
 336                 if (parser->global.physical_minimum < 0)
 337                         parser->global.physical_maximum = item_sdata(item);
 338                 else
 339                         parser->global.physical_maximum = item_udata(item);
 340                 return 0;
 341
 342         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
 343                 parser->global.unit_exponent = item_sdata(item);
 344                 return 0;
 345
 346         case HID_GLOBAL_ITEM_TAG_UNIT:
 347                 parser->global.unit = item_udata(item);
 348                 return 0;
 349
 350         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
 351                 parser->global.report_size = item_udata(item);
 352                 if (parser->global.report_size > 32) {
 353                         dbg_hid("invalid report_size %d\n",
 354                                         parser->global.report_size);
 355                         return -1;
 356                 }
 357                 return 0;
 358
 359         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
 360                 parser->global.report_count = item_udata(item);
 361                 if (parser->global.report_count > HID_MAX_USAGES) {
 362                         dbg_hid("invalid report_count %d\n",
 363                                         parser->global.report_count);
 364                         return -1;
 365                 }
 366                 return 0;
 367
 368         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
 369                 parser->global.report_id = item_udata(item);
 370                 if (parser->global.report_id == 0) {
 371                         dbg_hid("report_id 0 is invalid\n");
 372                         return -1;
 373                 }
 374                 return 0;
 375
 376         default:
 377                 dbg_hid("unknown global tag 0x%x\n", item->tag);
 378                 return -1;
 379         }
 380 }
 381
 382 /*
 383  * Process a local item.
 384  */
 385
 386 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 387 {
 388         __u32 data;
 389         unsigned n;
 390
 391         data = item_udata(item);
 392
 393         switch (item->tag) {
 394         case HID_LOCAL_ITEM_TAG_DELIMITER:
 395
 396                 if (data) {
 397                         /*
 398                          * We treat items before the first delimiter
 399                          * as global to all usage sets (branch 0).
 400                          * In the moment we process only these global
 401                          * items and the first delimiter set.
 402                          */
 403                         if (parser->local.delimiter_depth != 0) {
 404                                 dbg_hid("nested delimiters\n");
 405                                 return -1;
 406                         }
 407                         parser->local.delimiter_depth++;
 408                         parser->local.delimiter_branch++;
 409                 } else {
 410                         if (parser->local.delimiter_depth < 1) {
 411                                 dbg_hid("bogus close delimiter\n");
 412                                 return -1;
 413                         }
 414                         parser->local.delimiter_depth--;
 415                 }
 416                 return 1;
 417
 418         case HID_LOCAL_ITEM_TAG_USAGE:
 419
 420                 if (parser->local.delimiter_branch > 1) {
 421                         dbg_hid("alternative usage ignored\n");
 422                         return 0;
 423                 }
 424
 425                 if (item->size <= 2)
 426                         data = (parser->global.usage_page << 16) + data;
 427
 428                 return hid_add_usage(parser, data);
 429
 430         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 431
 432                 if (parser->local.delimiter_branch > 1) {
 433                         dbg_hid("alternative usage ignored\n");
 434                         return 0;
 435                 }
 436
 437                 if (item->size <= 2)
 438                         data = (parser->global.usage_page << 16) + data;
 439
 440                 parser->local.usage_minimum = data;
 441                 return 0;
 442
 443         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 444
 445                 if (parser->local.delimiter_branch > 1) {
 446                         dbg_hid("alternative usage ignored\n");
 447                         return 0;
 448                 }
 449
 450                 if (item->size <= 2)
 451                         data = (parser->global.usage_page << 16) + data;
 452
 453                 for (n = parser->local.usage_minimum; n <= data; n++)
 454                         if (hid_add_usage(parser, n)) {
 455                                 dbg_hid("hid_add_usage failed\n");
 456                                 return -1;
 457                         }
 458                 return 0;
 459
 460         default:
 461
 462                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
 463                 return 0;
 464         }
 465         return 0;
 466 }
 467
 468 /*
 469  * Process a main item.
 470  */
 471
 472 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
 473 {
 474         __u32 data;
 475         int ret;
 476
 477         data = item_udata(item);
 478
 479         switch (item->tag) {
 480         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 481                 ret = open_collection(parser, data & 0xff);
 482                 break;
 483         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 484                 ret = close_collection(parser);
 485                 break;
 486         case HID_MAIN_ITEM_TAG_INPUT:
 487                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
 488                 break;
 489         case HID_MAIN_ITEM_TAG_OUTPUT:
 490                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
 491                 break;
 492         case HID_MAIN_ITEM_TAG_FEATURE:
 493                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
 494                 break;
 495         default:
 496                 dbg_hid("unknown main item tag 0x%x\n", item->tag);
 497                 ret = 0;
 498         }
 499
 500         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
 501
 502         return ret;
 503 }
 504
 505 /*
 506  * Process a reserved item.
 507  */
 508
 509 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
 510 {
 511         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
 512         return 0;
 513 }
 514
 515 /*
 516  * Free a report and all registered fields. The field->usage and
 517  * field->value table's are allocated behind the field, so we need
 518  * only to free(field) itself.
 519  */
 520
 521 static void hid_free_report(struct hid_report *report)
 522 {
 523         unsigned n;
 524
 525         for (n = 0; n < report->maxfield; n++)
 526                 kfree(report->field[n]);
 527         kfree(report);
 528 }
 529
 530 /*
 531  * Free a device structure, all reports, and all fields.
 532  */
 533
 534 static void hid_device_release(struct device *dev)
 535 {
 536         struct hid_device *device = container_of(dev, struct hid_device, dev);
 537         unsigned i, j;
 538
 539         for (i = 0; i < HID_REPORT_TYPES; i++) {
 540                 struct hid_report_enum *report_enum = device->report_enum + i;
 541
 542                 for (j = 0; j < 256; j++) {
 543                         struct hid_report *report = report_enum->report_id_hash[j];
 544                         if (report)
 545                                 hid_free_report(report);
 546                 }
 547         }
 548
 549         kfree(device->rdesc);
 550         kfree(device->collection);
 551         kfree(device);
 552 }
 553
 554 /*
 555  * Fetch a report description item from the data stream. We support long
 556  * items, though they are not used yet.
 557  */
 558
 559 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
 560 {
 561         u8 b;
 562
 563         if ((end - start) <= 0)
 564                 return NULL;
 565
 566         b = *start++;
 567
 568         item->type = (b >> 2) & 3;
 569         item->tag  = (b >> 4) & 15;
 570
 571         if (item->tag == HID_ITEM_TAG_LONG) {
 572
 573                 item->format = HID_ITEM_FORMAT_LONG;
 574
 575                 if ((end - start) < 2)
 576                         return NULL;
 577
 578                 item->size = *start++;
 579                 item->tag  = *start++;
 580
 581                 if ((end - start) < item->size)
 582                         return NULL;
 583
 584                 item->data.longdata = start;
 585                 start += item->size;
 586                 return start;
 587         }
 588
 589         item->format = HID_ITEM_FORMAT_SHORT;
 590         item->size = b & 3;
 591
 592         switch (item->size) {
 593         case 0:
 594                 return start;
 595
 596         case 1:
 597                 if ((end - start) < 1)
 598                         return NULL;
 599                 item->data.u8 = *start++;
 600                 return start;
 601
 602         case 2:
 603                 if ((end - start) < 2)
 604                         return NULL;
 605                 item->data.u16 = get_unaligned_le16(start);
 606                 start = (__u8 *)((__le16 *)start + 1);
 607                 return start;
 608
 609         case 3:
 610                 item->size++;
 611                 if ((end - start) < 4)
 612                         return NULL;
 613                 item->data.u32 = get_unaligned_le32(start);
 614                 start = (__u8 *)((__le32 *)start + 1);
 615                 return start;
 616         }
 617
 618         return NULL;
 619 }
 620
 621 /**
 622  * hid_parse_report - parse device report
 623  *
 624  * @device: hid device
 625  * @start: report start
 626  * @size: report size
 627  *
 628  * Parse a report description into a hid_device structure. Reports are
 629  * enumerated, fields are attached to these reports.
 630  * 0 returned on success, otherwise nonzero error value.
 631  */
 632 int hid_parse_report(struct hid_device *device, __u8 *start,
 633                 unsigned size)
 634 {
 635         struct hid_parser *parser;
 636         struct hid_item item;
 637         __u8 *end;
 638         int ret;
 639         static int (*dispatch_type[])(struct hid_parser *parser,
 640                                       struct hid_item *item) = {
 641                 hid_parser_main,
 642                 hid_parser_global,
 643                 hid_parser_local,
 644                 hid_parser_reserved
 645         };
 646
 647         if (device->driver->report_fixup)
 648                 start = device->driver->report_fixup(device, start, &size);
 649
 650         device->rdesc = kmemdup(start, size, GFP_KERNEL);
 651         if (device->rdesc == NULL)
 652                 return -ENOMEM;
 653         device->rsize = size;
 654
 655         parser = vmalloc(sizeof(struct hid_parser));
 656         if (!parser) {
 657                 ret = -ENOMEM;
 658                 goto err;
 659         }
 660
 661         memset(parser, 0, sizeof(struct hid_parser));
 662         parser->device = device;
 663
 664         end = start + size;
 665         ret = -EINVAL;
 666         while ((start = fetch_item(start, end, &item)) != NULL) {
 667
 668                 if (item.format != HID_ITEM_FORMAT_SHORT) {
 669                         dbg_hid("unexpected long global item\n");
 670                         goto err;
 671                 }
 672
 673                 if (dispatch_type[item.type](parser, &item)) {
 674                         dbg_hid("item %u %u %u %u parsing failed\n",
 675                                 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
 676                         goto err;
 677                 }
 678
 679                 if (start == end) {
 680                         if (parser->collection_stack_ptr) {
 681                                 dbg_hid("unbalanced collection at end of report description\n");
 682                                 goto err;
 683                         }
 684                         if (parser->local.delimiter_depth) {
 685                                 dbg_hid("unbalanced delimiter at end of report description\n");
 686                                 goto err;
 687                         }
 688                         vfree(parser);
 689                         return 0;
 690                 }
 691         }
 692
 693         dbg_hid("item fetching failed at offset %d\n", (int)(end - start));
 694 err:
 695         vfree(parser);
 696         return ret;
 697 }
 698 EXPORT_SYMBOL_GPL(hid_parse_report);
 699
 700 /*
 701  * Convert a signed n-bit integer to signed 32-bit integer. Common
 702  * cases are done through the compiler, the screwed things has to be
 703  * done by hand.
 704  */
 705
 706 static s32 snto32(__u32 value, unsigned n)
 707 {
 708         switch (n) {
 709         case 8:  return ((__s8)value);
 710         case 16: return ((__s16)value);
 711         case 32: return ((__s32)value);
 712         }
 713         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
 714 }
 715
 716 /*
 717  * Convert a signed 32-bit integer to a signed n-bit integer.
 718  */
 719
 720 static u32 s32ton(__s32 value, unsigned n)
 721 {
 722         s32 a = value >> (n - 1);
 723         if (a && a != -1)
 724                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
 725         return value & ((1 << n) - 1);
 726 }
 727
 728 /*
 729  * Extract/implement a data field from/to a little endian report (bit array).
 730  *
 731  * Code sort-of follows HID spec:
 732  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
 733  *
 734  * While the USB HID spec allows unlimited length bit fields in "report
 735  * descriptors", most devices never use more than 16 bits.
 736  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
 737  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
 738  */
 739
 740 static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
 741 {
 742         u64 x;
 743
 744         if (n > 32)
 745                 printk(KERN_WARNING "HID: extract() called with n (%d) > 32! (%s)\n",
 746                                 n, current->comm);
 747
 748         report += offset >> 3;  /* adjust byte index */
 749         offset &= 7;            /* now only need bit offset into one byte */
 750         x = get_unaligned_le64(report);
 751         x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
 752         return (u32) x;
 753 }
 754
 755 /*
 756  * "implement" : set bits in a little endian bit stream.
 757  * Same concepts as "extract" (see comments above).
 758  * The data mangled in the bit stream remains in little endian
 759  * order the whole time. It make more sense to talk about
 760  * endianness of register values by considering a register
 761  * a "cached" copy of the little endiad bit stream.
 762  */
 763 static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
 764 {
 765         u64 x;
 766         u64 m = (1ULL << n) - 1;
 767
 768         if (n > 32)
 769                 printk(KERN_WARNING "HID: implement() called with n (%d) > 32! (%s)\n",
 770                                 n, current->comm);
 771
 772         if (value > m)
 773                 printk(KERN_WARNING "HID: implement() called with too large value %d! (%s)\n",
 774                                 value, current->comm);
 775         WARN_ON(value > m);
 776         value &= m;
 777
 778         report += offset >> 3;
 779         offset &= 7;
 780
 781         x = get_unaligned_le64(report);
 782         x &= ~(m << offset);
 783         x |= ((u64)value) << offset;
 784         put_unaligned_le64(x, report);
 785 }
 786
 787 /*
 788  * Search an array for a value.
 789  */
 790
 791 static __inline__ int search(__s32 *array, __s32 value, unsigned n)
 792 {
 793         while (n--) {
 794                 if (*array++ == value)
 795                         return 0;
 796         }
 797         return -1;
 798 }
 799
 800 /**
 801  * hid_match_report - check if driver's raw_event should be called
 802  *
 803  * @hid: hid device
 804  * @report_type: type to match against
 805  *
 806  * compare hid->driver->report_table->report_type to report->type
 807  */
 808 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
 809 {
 810         const struct hid_report_id *id = hid->driver->report_table;
 811
 812         if (!id) /* NULL means all */
 813                 return 1;
 814
 815         for (; id->report_type != HID_TERMINATOR; id++)
 816                 if (id->report_type == HID_ANY_ID ||
 817                                 id->report_type == report->type)
 818                         return 1;
 819         return 0;
 820 }
 821
 822 /**
 823  * hid_match_usage - check if driver's event should be called
 824  *
 825  * @hid: hid device
 826  * @usage: usage to match against
 827  *
 828  * compare hid->driver->usage_table->usage_{type,code} to
 829  * usage->usage_{type,code}
 830  */
 831 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
 832 {
 833         const struct hid_usage_id *id = hid->driver->usage_table;
 834
 835         if (!id) /* NULL means all */
 836                 return 1;
 837
 838         for (; id->usage_type != HID_ANY_ID - 1; id++)
 839                 if ((id->usage_hid == HID_ANY_ID ||
 840                                 id->usage_hid == usage->hid) &&
 841                                 (id->usage_type == HID_ANY_ID ||
 842                                 id->usage_type == usage->type) &&
 843                                 (id->usage_code == HID_ANY_ID ||
 844                                  id->usage_code == usage->code))
 845                         return 1;
 846         return 0;
 847 }
 848
 849 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
 850                 struct hid_usage *usage, __s32 value, int interrupt)
 851 {
 852         struct hid_driver *hdrv = hid->driver;
 853         int ret;
 854
 855         hid_dump_input(hid, usage, value);
 856
 857         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
 858                 ret = hdrv->event(hid, field, usage, value);
 859                 if (ret != 0) {
 860                         if (ret < 0)
 861                                 dbg_hid("%s's event failed with %d\n",
 862                                                 hdrv->name, ret);
 863                         return;
 864                 }
 865         }
 866
 867         if (hid->claimed & HID_CLAIMED_INPUT)
 868                 hidinput_hid_event(hid, field, usage, value);
 869         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
 870                 hid->hiddev_hid_event(hid, field, usage, value);
 871 }
 872
 873 /*
 874  * Analyse a received field, and fetch the data from it. The field
 875  * content is stored for next report processing (we do differential
 876  * reporting to the layer).
 877  */
 878
 879 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
 880                             __u8 *data, int interrupt)
 881 {
 882         unsigned n;
 883         unsigned count = field->report_count;
 884         unsigned offset = field->report_offset;
 885         unsigned size = field->report_size;
 886         __s32 min = field->logical_minimum;
 887         __s32 max = field->logical_maximum;
 888         __s32 *value;
 889
 890         if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC)))
 891                 return;
 892
 893         for (n = 0; n < count; n++) {
 894
 895                         value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
 896                                                     extract(data, offset + n * size, size);
 897
 898                         if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
 899                             && value[n] >= min && value[n] <= max
 900                             && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
 901                                 goto exit;
 902         }
 903
 904         for (n = 0; n < count; n++) {
 905
 906                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
 907                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
 908                         continue;
 909                 }
 910
 911                 if (field->value[n] >= min && field->value[n] <= max
 912                         && field->usage[field->value[n] - min].hid
 913                         && search(value, field->value[n], count))
 914                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
 915
 916                 if (value[n] >= min && value[n] <= max
 917                         && field->usage[value[n] - min].hid
 918                         && search(field->value, value[n], count))
 919                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
 920         }
 921
 922         memcpy(field->value, value, count * sizeof(__s32));
 923 exit:
 924         kfree(value);
 925 }
 926
 927 /*
 928  * Output the field into the report.
 929  */
 930
 931 static void hid_output_field(struct hid_field *field, __u8 *data)
 932 {
 933         unsigned count = field->report_count;
 934         unsigned offset = field->report_offset;
 935         unsigned size = field->report_size;
 936         unsigned n;
 937
 938         for (n = 0; n < count; n++) {
 939                 if (field->logical_minimum < 0) /* signed values */
 940                         implement(data, offset + n * size, size, s32ton(field->value[n], size));
 941                 else                            /* unsigned values */
 942                         implement(data, offset + n * size, size, field->value[n]);
 943         }
 944 }
 945
 946 /*
 947  * Create a report.
 948  */
 949
 950 void hid_output_report(struct hid_report *report, __u8 *data)
 951 {
 952         unsigned n;
 953
 954         if (report->id > 0)
 955                 *data++ = report->id;
 956
 957         memset(data, 0, ((report->size - 1) >> 3) + 1);
 958         for (n = 0; n < report->maxfield; n++)
 959                 hid_output_field(report->field[n], data);
 960 }
 961 EXPORT_SYMBOL_GPL(hid_output_report);
 962
 963 /*
 964  * Set a field value. The report this field belongs to has to be
 965  * created and transferred to the device, to set this value in the
 966  * device.
 967  */
 968
 969 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
 970 {
 971         unsigned size = field->report_size;
 972
 973         hid_dump_input(field->report->device, field->usage + offset, value);
 974
 975         if (offset >= field->report_count) {
 976                 dbg_hid("offset (%d) exceeds report_count (%d)\n", offset, field->report_count);
 977                 return -1;
 978         }
 979         if (field->logical_minimum < 0) {
 980                 if (value != snto32(s32ton(value, size), size)) {
 981                         dbg_hid("value %d is out of range\n", value);
 982                         return -1;
 983                 }
 984         }
 985         field->value[offset] = value;
 986         return 0;
 987 }
 988 EXPORT_SYMBOL_GPL(hid_set_field);
 989
 990 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
 991                 const u8 *data)
 992 {
 993         struct hid_report *report;
 994         unsigned int n = 0;     /* Normally report number is 0 */
 995
 996         /* Device uses numbered reports, data[0] is report number */
 997         if (report_enum->numbered)
 998                 n = *data;
 999
1000         report = report_enum->report_id_hash[n];
1001         if (report == NULL)
1002                 dbg_hid("undefined report_id %u received\n", n);
1003
1004         return report;
1005 }
1006
1007 void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1008                 int interrupt)
1009 {
1010         struct hid_report_enum *report_enum = hid->report_enum + type;
1011         struct hid_report *report;
1012         unsigned int a;
1013         int rsize, csize = size;
1014         u8 *cdata = data;
1015
1016         report = hid_get_report(report_enum, data);
1017         if (!report)
1018                 return;
1019
1020         if (report_enum->numbered) {
1021                 cdata++;
1022                 csize--;
1023         }
1024
1025         rsize = ((report->size - 1) >> 3) + 1;
1026
1027         if (csize < rsize) {
1028                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1029                                 csize, rsize);
1030                 memset(cdata + csize, 0, rsize - csize);
1031         }
1032
1033         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1034                 hid->hiddev_report_event(hid, report);
1035         if (hid->claimed & HID_CLAIMED_HIDRAW)
1036                 hidraw_report_event(hid, data, size);
1037
1038         for (a = 0; a < report->maxfield; a++)
1039                 hid_input_field(hid, report->field[a], cdata, interrupt);
1040
1041         if (hid->claimed & HID_CLAIMED_INPUT)
1042                 hidinput_report_event(hid, report);
1043 }
1044 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1045
1046 /**
1047  * hid_input_report - report data from lower layer (usb, bt...)
1048  *
1049  * @hid: hid device
1050  * @type: HID report type (HID_*_REPORT)
1051  * @data: report contents
1052  * @size: size of data parameter
1053  * @interrupt: distinguish between interrupt and control transfers
1054  *
1055  * This is data entry for lower layers.
1056  */
1057 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1058 {
1059         struct hid_report_enum *report_enum;
1060         struct hid_driver *hdrv;
1061         struct hid_report *report;
1062         char *buf;
1063         unsigned int i;
1064         int ret;
1065
1066         if (!hid || !hid->driver)
1067                 return -ENODEV;
1068         report_enum = hid->report_enum + type;
1069         hdrv = hid->driver;
1070
1071         if (!size) {
1072                 dbg_hid("empty report\n");
1073                 return -1;
1074         }
1075
1076         buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
1077
1078         if (!buf)
1079                 goto nomem;
1080
1081         /* dump the report */
1082         snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1083                         "\nreport (size %u) (%snumbered) = ", size, report_enum->numbered ? "" : "un");
1084         hid_debug_event(hid, buf);
1085
1086         for (i = 0; i < size; i++) {
1087                 snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1088                                 " %02x", data[i]);
1089                 hid_debug_event(hid, buf);
1090         }
1091         hid_debug_event(hid, "\n");
1092         kfree(buf);
1093
1094 nomem:
1095         report = hid_get_report(report_enum, data);
1096
1097         if (!report)
1098                 return -1;
1099
1100         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1101                 ret = hdrv->raw_event(hid, report, data, size);
1102                 if (ret != 0)
1103                         return ret < 0 ? ret : 0;
1104         }
1105
1106         hid_report_raw_event(hid, type, data, size, interrupt);
1107
1108         return 0;
1109 }
1110 EXPORT_SYMBOL_GPL(hid_input_report);
1111
1112 static bool hid_match_one_id(struct hid_device *hdev,
1113                 const struct hid_device_id *id)
1114 {
1115         return id->bus == hdev->bus &&
1116                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1117                 (id->product == HID_ANY_ID || id->product == hdev->product);
1118 }
1119
1120 static const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1121                 const struct hid_device_id *id)
1122 {
1123         for (; id->bus; id++)
1124                 if (hid_match_one_id(hdev, id))
1125                         return id;
1126
1127         return NULL;
1128 }
1129
1130 static const struct hid_device_id hid_hiddev_list[] = {
1131         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1132         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1133         { }
1134 };
1135
1136 static bool hid_hiddev(struct hid_device *hdev)
1137 {
1138         return !!hid_match_id(hdev, hid_hiddev_list);
1139 }
1140
1141 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1142 {
1143         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1144                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1145                 "Multi-Axis Controller"
1146         };
1147         const char *type, *bus;
1148         char buf[64];
1149         unsigned int i;
1150         int len;
1151
1152         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1153                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1154         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1155                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1156         if (hdev->bus != BUS_USB)
1157                 connect_mask &= ~HID_CONNECT_HIDDEV;
1158         if (hid_hiddev(hdev))
1159                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1160
1161         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1162                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1163                 hdev->claimed |= HID_CLAIMED_INPUT;
1164         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1165                         !hdev->hiddev_connect(hdev,
1166                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1167                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1168         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1169                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1170
1171         if (!hdev->claimed) {
1172                 dev_err(&hdev->dev, "claimed by neither input, hiddev nor "
1173                                 "hidraw\n");
1174                 return -ENODEV;
1175         }
1176
1177         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1178                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1179                 hdev->ff_init(hdev);
1180
1181         len = 0;
1182         if (hdev->claimed & HID_CLAIMED_INPUT)
1183                 len += sprintf(buf + len, "input");
1184         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1185                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1186                                 hdev->minor);
1187         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1188                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1189                                 ((struct hidraw *)hdev->hidraw)->minor);
1190
1191         type = "Device";
1192         for (i = 0; i < hdev->maxcollection; i++) {
1193                 struct hid_collection *col = &hdev->collection[i];
1194                 if (col->type == HID_COLLECTION_APPLICATION &&
1195                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1196                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1197                         type = types[col->usage & 0xffff];
1198                         break;
1199                 }
1200         }
1201
1202         switch (hdev->bus) {
1203         case BUS_USB:
1204                 bus = "USB";
1205                 break;
1206         case BUS_BLUETOOTH:
1207                 bus = "BLUETOOTH";
1208                 break;
1209         default:
1210                 bus = "<UNKNOWN>";
1211         }
1212
1213         dev_info(&hdev->dev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1214                         buf, bus, hdev->version >> 8, hdev->version & 0xff,
1215                         type, hdev->name, hdev->phys);
1216
1217         return 0;
1218 }
1219 EXPORT_SYMBOL_GPL(hid_connect);
1220
1221 void hid_disconnect(struct hid_device *hdev)
1222 {
1223         if (hdev->claimed & HID_CLAIMED_INPUT)
1224                 hidinput_disconnect(hdev);
1225         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1226                 hdev->hiddev_disconnect(hdev);
1227         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1228                 hidraw_disconnect(hdev);
1229 }
1230 EXPORT_SYMBOL_GPL(hid_disconnect);
1231
1232 /* a list of devices for which there is a specialized driver on HID bus */
1233 static const struct hid_device_id hid_blacklist[] = {
1234         { HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M1968) },
1235         { HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M2256) },
1236         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1237         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1238         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1239 #if defined(CONFIG_HID_ACRUX_FF) || defined(CONFIG_HID_ACRUX_FF_MODULE)
1240         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1241 #endif
1242         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) },
1243         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1244         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1245         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1246         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1247         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1248         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1249         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1250         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1251         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1252         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1253         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1254         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1255         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1256         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1257         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1258         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1259         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1260         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1261         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1262         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1263         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1264         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1265         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1266         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1267         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1268         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1269         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1270         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1271         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1272         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1273         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1274         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1275         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1276         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1277         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1278         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1279         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1280         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1281         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1282         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1283         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1284         { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_T91MT) },
1285         { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1286         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1287         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1288         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1289         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1290         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
1291         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1292         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1293         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1294         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1295         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1296         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1297         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1298         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1299         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1300         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1301         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
1302         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
1303         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1304         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1305         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1306         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1307         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1308         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1309         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1310         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1311         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1312         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1313         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1314         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1315         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1316         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1317         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1318         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1319         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1320         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1321         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1322         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1323         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1324         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1325         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1326         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1327         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1328         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1329         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1330         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1331         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1332         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1333         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1334         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1335         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1336         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1337         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1338         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1339         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1340         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1341         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1342         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1343         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1344         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1345         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1346         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1347         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1348         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1349         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1350         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1351         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1352         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1353         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1354         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1355         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1356         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1357         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1358         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1359         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1360         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1361         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1362         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1363         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1364         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1365         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1366         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1367         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1368         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1369         { HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1370         { HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_PIXART_IMAGING_INC_OPTICAL_TOUCH_SCREEN) },
1371         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1372         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1373         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1374         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1375         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1376         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1377         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1378         { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, USB_DEVICE_ID_MTP) },
1379         { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, USB_DEVICE_ID_MTP_STM) },
1380         { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX, USB_DEVICE_ID_MTP_SITRONIX) },
1381         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1382         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1383         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1384         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1385         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1386         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1387         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1388         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1389         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1390         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1391         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1392         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1393         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1394         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1395         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1396         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1397         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1398         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1399         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1400         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1401         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1402         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1403         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1404         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1405
1406         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1407         { }
1408 };
1409
1410 struct hid_dynid {
1411         struct list_head list;
1412         struct hid_device_id id;
1413 };
1414
1415 /**
1416  * store_new_id - add a new HID device ID to this driver and re-probe devices
1417  * @driver: target device driver
1418  * @buf: buffer for scanning device ID data
1419  * @count: input size
1420  *
1421  * Adds a new dynamic hid device ID to this driver,
1422  * and causes the driver to probe for all devices again.
1423  */
1424 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1425                 size_t count)
1426 {
1427         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1428         struct hid_dynid *dynid;
1429         __u32 bus, vendor, product;
1430         unsigned long driver_data = 0;
1431         int ret;
1432
1433         ret = sscanf(buf, "%x %x %x %lx",
1434                         &bus, &vendor, &product, &driver_data);
1435         if (ret < 3)
1436                 return -EINVAL;
1437
1438         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1439         if (!dynid)
1440                 return -ENOMEM;
1441
1442         dynid->id.bus = bus;
1443         dynid->id.vendor = vendor;
1444         dynid->id.product = product;
1445         dynid->id.driver_data = driver_data;
1446
1447         spin_lock(&hdrv->dyn_lock);
1448         list_add_tail(&dynid->list, &hdrv->dyn_list);
1449         spin_unlock(&hdrv->dyn_lock);
1450
1451         ret = 0;
1452         if (get_driver(&hdrv->driver)) {
1453                 ret = driver_attach(&hdrv->driver);
1454                 put_driver(&hdrv->driver);
1455         }
1456
1457         return ret ? : count;
1458 }
1459 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1460
1461 static void hid_free_dynids(struct hid_driver *hdrv)
1462 {
1463         struct hid_dynid *dynid, *n;
1464
1465         spin_lock(&hdrv->dyn_lock);
1466         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1467                 list_del(&dynid->list);
1468                 kfree(dynid);
1469         }
1470         spin_unlock(&hdrv->dyn_lock);
1471 }
1472
1473 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1474                 struct hid_driver *hdrv)
1475 {
1476         struct hid_dynid *dynid;
1477
1478         spin_lock(&hdrv->dyn_lock);
1479         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1480                 if (hid_match_one_id(hdev, &dynid->id)) {
1481                         spin_unlock(&hdrv->dyn_lock);
1482                         return &dynid->id;
1483                 }
1484         }
1485         spin_unlock(&hdrv->dyn_lock);
1486
1487         return hid_match_id(hdev, hdrv->id_table);
1488 }
1489
1490 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1491 {
1492         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1493         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1494
1495         if (!hid_match_device(hdev, hdrv))
1496                 return 0;
1497
1498         /* generic wants all non-blacklisted */
1499         if (!strncmp(hdrv->name, "generic-", 8))
1500                 return !hid_match_id(hdev, hid_blacklist);
1501
1502         return 1;
1503 }
1504
1505 static int hid_device_probe(struct device *dev)
1506 {
1507         struct hid_driver *hdrv = container_of(dev->driver,
1508                         struct hid_driver, driver);
1509         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1510         const struct hid_device_id *id;
1511         int ret = 0;
1512
1513         if (!hdev->driver) {
1514                 id = hid_match_device(hdev, hdrv);
1515                 if (id == NULL)
1516                         return -ENODEV;
1517
1518                 hdev->driver = hdrv;
1519                 if (hdrv->probe) {
1520                         ret = hdrv->probe(hdev, id);
1521                 } else { /* default probe */
1522                         ret = hid_parse(hdev);
1523                         if (!ret)
1524                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1525                 }
1526                 if (ret)
1527                         hdev->driver = NULL;
1528         }
1529         return ret;
1530 }
1531
1532 static int hid_device_remove(struct device *dev)
1533 {
1534         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1535         struct hid_driver *hdrv = hdev->driver;
1536
1537         if (hdrv) {
1538                 if (hdrv->remove)
1539                         hdrv->remove(hdev);
1540                 else /* default remove */
1541                         hid_hw_stop(hdev);
1542                 hdev->driver = NULL;
1543         }
1544
1545         return 0;
1546 }
1547
1548 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1549 {
1550         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1551
1552         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
1553                         hdev->bus, hdev->vendor, hdev->product))
1554                 return -ENOMEM;
1555
1556         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
1557                 return -ENOMEM;
1558
1559         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
1560                 return -ENOMEM;
1561
1562         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
1563                 return -ENOMEM;
1564
1565         if (add_uevent_var(env, "MODALIAS=hid:b%04Xv%08Xp%08X",
1566                         hdev->bus, hdev->vendor, hdev->product))
1567                 return -ENOMEM;
1568
1569         return 0;
1570 }
1571
1572 static struct bus_type hid_bus_type = {
1573         .name           = "hid",
1574         .match          = hid_bus_match,
1575         .probe          = hid_device_probe,
1576         .remove         = hid_device_remove,
1577         .uevent         = hid_uevent,
1578 };
1579
1580 /* a list of devices that shouldn't be handled by HID core at all */
1581 static const struct hid_device_id hid_ignore_list[] = {
1582         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
1583         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
1584         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
1585         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
1586         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
1587         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
1588         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
1589         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
1590         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
1591         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
1592         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
1593         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
1594         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
1595         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
1596         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
1597         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
1598         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
1599         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
1600         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
1601         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
1602         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
1603         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
1604         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
1605         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
1606         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
1607         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
1608         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
1609         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
1610         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
1611         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0003) },
1612         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
1613         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
1614         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
1615         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
1616         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
1617         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
1618         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
1619         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
1620         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
1621         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
1622         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
1623         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
1624         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
1625         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
1626         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
1627         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
1628         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
1629         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
1630         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
1631         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
1632         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
1633         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
1634         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
1635         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
1636         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
1637         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
1638         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
1639         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
1640         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
1641         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
1642         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
1643         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
1644         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
1645         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
1646         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
1647         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
1648         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
1649         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
1650         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
1651         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
1652         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
1653         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
1654         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
1655         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
1656         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
1657         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
1658         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
1659         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
1660         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
1661         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
1662         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
1663         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
1664         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
1665         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
1666         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
1667         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
1668         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
1669         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
1670         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
1671         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
1672         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
1673         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
1674         { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_JESS_YUREX) },
1675         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
1676         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
1677         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
1678         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
1679         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
1680         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
1681         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
1682         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
1683         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
1684         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
1685         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY1) },
1686         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
1687         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
1688         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
1689         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
1690         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
1691         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
1692         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
1693         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
1694         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
1695         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
1696         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
1697         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
1698         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
1699         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
1700         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
1701         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
1702         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
1703         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
1704         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
1705         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
1706         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
1707         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
1708         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
1709         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
1710         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
1711         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
1712         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
1713         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
1714         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
1715         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
1716         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
1717         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
1718         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
1719         { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
1720         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
1721         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
1722         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
1723         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
1724         { }
1725 };
1726
1727 /**
1728  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
1729  *
1730  * There are composite devices for which we want to ignore only a certain
1731  * interface. This is a list of devices for which only the mouse interface will
1732  * be ignored. This allows a dedicated driver to take care of the interface.
1733  */
1734 static const struct hid_device_id hid_mouse_ignore_list[] = {
1735         /* appletouch driver */
1736         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1737         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1738         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1739         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1740         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1741         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1742         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1743         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1744         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1745         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1746         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1747         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1748         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1749         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1750         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1751         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1752         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1753         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1754         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1755         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1756         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1757         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1758         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1759         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1760         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1761         { }
1762 };
1763
1764 static bool hid_ignore(struct hid_device *hdev)
1765 {
1766         switch (hdev->vendor) {
1767         case USB_VENDOR_ID_CODEMERCS:
1768                 /* ignore all Code Mercenaries IOWarrior devices */
1769                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
1770                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
1771                         return true;
1772                 break;
1773         case USB_VENDOR_ID_LOGITECH:
1774                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
1775                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
1776                         return true;
1777                 break;
1778         case USB_VENDOR_ID_SOUNDGRAPH:
1779                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
1780                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
1781                         return true;
1782                 break;
1783         case USB_VENDOR_ID_HANWANG:
1784                 if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
1785                     hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
1786                         return true;
1787                 break;
1788         }
1789
1790         if (hdev->type == HID_TYPE_USBMOUSE &&
1791                         hid_match_id(hdev, hid_mouse_ignore_list))
1792                 return true;
1793
1794         return !!hid_match_id(hdev, hid_ignore_list);
1795 }
1796
1797 int hid_add_device(struct hid_device *hdev)
1798 {
1799         static atomic_t id = ATOMIC_INIT(0);
1800         int ret;
1801
1802         if (WARN_ON(hdev->status & HID_STAT_ADDED))
1803                 return -EBUSY;
1804
1805         /* we need to kill them here, otherwise they will stay allocated to
1806          * wait for coming driver */
1807         if (!(hdev->quirks & HID_QUIRK_NO_IGNORE)
1808             && (hid_ignore(hdev) || (hdev->quirks & HID_QUIRK_IGNORE)))
1809                 return -ENODEV;
1810
1811         /* XXX hack, any other cleaner solution after the driver core
1812          * is converted to allow more than 20 bytes as the device name? */
1813         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
1814                      hdev->vendor, hdev->product, atomic_inc_return(&id));
1815
1816         hid_debug_register(hdev, dev_name(&hdev->dev));
1817         ret = device_add(&hdev->dev);
1818         if (!ret)
1819                 hdev->status |= HID_STAT_ADDED;
1820         else
1821                 hid_debug_unregister(hdev);
1822
1823         return ret;
1824 }
1825 EXPORT_SYMBOL_GPL(hid_add_device);
1826
1827 /**
1828  * hid_allocate_device - allocate new hid device descriptor
1829  *
1830  * Allocate and initialize hid device, so that hid_destroy_device might be
1831  * used to free it.
1832  *
1833  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
1834  * error value.
1835  */
1836 struct hid_device *hid_allocate_device(void)
1837 {
1838         struct hid_device *hdev;
1839         unsigned int i;
1840         int ret = -ENOMEM;
1841
1842         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
1843         if (hdev == NULL)
1844                 return ERR_PTR(ret);
1845
1846         device_initialize(&hdev->dev);
1847         hdev->dev.release = hid_device_release;
1848         hdev->dev.bus = &hid_bus_type;
1849
1850         hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
1851                         sizeof(struct hid_collection), GFP_KERNEL);
1852         if (hdev->collection == NULL)
1853                 goto err;
1854         hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
1855
1856         for (i = 0; i < HID_REPORT_TYPES; i++)
1857                 INIT_LIST_HEAD(&hdev->report_enum[i].report_list);
1858
1859         init_waitqueue_head(&hdev->debug_wait);
1860         INIT_LIST_HEAD(&hdev->debug_list);
1861
1862         return hdev;
1863 err:
1864         put_device(&hdev->dev);
1865         return ERR_PTR(ret);
1866 }
1867 EXPORT_SYMBOL_GPL(hid_allocate_device);
1868
1869 static void hid_remove_device(struct hid_device *hdev)
1870 {
1871         if (hdev->status & HID_STAT_ADDED) {
1872                 device_del(&hdev->dev);
1873                 hid_debug_unregister(hdev);
1874                 hdev->status &= ~HID_STAT_ADDED;
1875         }
1876 }
1877
1878 /**
1879  * hid_destroy_device - free previously allocated device
1880  *
1881  * @hdev: hid device
1882  *
1883  * If you allocate hid_device through hid_allocate_device, you should ever
1884  * free by this function.
1885  */
1886 void hid_destroy_device(struct hid_device *hdev)
1887 {
1888         hid_remove_device(hdev);
1889         put_device(&hdev->dev);
1890 }
1891 EXPORT_SYMBOL_GPL(hid_destroy_device);
1892
1893 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
1894                 const char *mod_name)
1895 {
1896         int ret;
1897
1898         hdrv->driver.name = hdrv->name;
1899         hdrv->driver.bus = &hid_bus_type;
1900         hdrv->driver.owner = owner;
1901         hdrv->driver.mod_name = mod_name;
1902
1903         INIT_LIST_HEAD(&hdrv->dyn_list);
1904         spin_lock_init(&hdrv->dyn_lock);
1905
1906         ret = driver_register(&hdrv->driver);
1907         if (ret)
1908                 return ret;
1909
1910         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
1911         if (ret)
1912                 driver_unregister(&hdrv->driver);
1913
1914         return ret;
1915 }
1916 EXPORT_SYMBOL_GPL(__hid_register_driver);
1917
1918 void hid_unregister_driver(struct hid_driver *hdrv)
1919 {
1920         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
1921         driver_unregister(&hdrv->driver);
1922         hid_free_dynids(hdrv);
1923 }
1924 EXPORT_SYMBOL_GPL(hid_unregister_driver);
1925
1926 int hid_check_keys_pressed(struct hid_device *hid)
1927 {
1928         struct hid_input *hidinput;
1929         int i;
1930
1931         if (!(hid->claimed & HID_CLAIMED_INPUT))
1932                 return 0;
1933
1934         list_for_each_entry(hidinput, &hid->inputs, list) {
1935                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
1936                         if (hidinput->input->key[i])
1937                                 return 1;
1938         }
1939
1940         return 0;
1941 }
1942
1943 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
1944
1945 static int __init hid_init(void)
1946 {
1947         int ret;
1948
1949         if (hid_debug)
1950                 printk(KERN_WARNING "HID: hid_debug is now used solely for parser and driver debugging.\n"
1951                                 "HID: debugfs is now used for inspecting the device (report descriptor, reports)\n");
1952
1953         ret = bus_register(&hid_bus_type);
1954         if (ret) {
1955                 printk(KERN_ERR "HID: can't register hid bus\n");
1956                 goto err;
1957         }
1958
1959         ret = hidraw_init();
1960         if (ret)
1961                 goto err_bus;
1962
1963         hid_debug_init();
1964
1965         return 0;
1966 err_bus:
1967         bus_unregister(&hid_bus_type);
1968 err:
1969         return ret;
1970 }
1971
1972 static void __exit hid_exit(void)
1973 {
1974         hid_debug_exit();
1975         hidraw_exit();
1976         bus_unregister(&hid_bus_type);
1977 }
1978
1979 module_init(hid_init);
1980 module_exit(hid_exit);
1981
1982 MODULE_AUTHOR("Andreas Gal");
1983 MODULE_AUTHOR("Vojtech Pavlik");
1984 MODULE_AUTHOR("Jiri Kosina");
1985 MODULE_LICENSE(DRIVER_LICENSE);
1986