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 #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
  33 #include <linux/hid.h>
  34 #include <linux/hiddev.h>
  35 #include <linux/hid-debug.h>
  36 #include <linux/hidraw.h>
  37
  38 #include "hid-ids.h"
  39
  40 /*
  41  * Version Information
  42  */
  43
  44 #define DRIVER_DESC "HID core driver"
  45 #define DRIVER_LICENSE "GPL"
  46
  47 int hid_debug = 0;
  48 module_param_named(debug, hid_debug, int, 0600);
  49 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
  50 EXPORT_SYMBOL_GPL(hid_debug);
  51
  52 /*
  53  * Register a new report for a device.
  54  */
  55
  56 struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
  57 {
  58         struct hid_report_enum *report_enum = device->report_enum + type;
  59         struct hid_report *report;
  60
  61         if (report_enum->report_id_hash[id])
  62                 return report_enum->report_id_hash[id];
  63
  64         if (!(report = kzalloc(sizeof(struct hid_report), GFP_KERNEL)))
  65                 return NULL;
  66
  67         if (id != 0)
  68                 report_enum->numbered = 1;
  69
  70         report->id = id;
  71         report->type = type;
  72         report->size = 0;
  73         report->device = device;
  74         report_enum->report_id_hash[id] = report;
  75
  76         list_add_tail(&report->list, &report_enum->report_list);
  77
  78         return report;
  79 }
  80 EXPORT_SYMBOL_GPL(hid_register_report);
  81
  82 /*
  83  * Register a new field for this report.
  84  */
  85
  86 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
  87 {
  88         struct hid_field *field;
  89
  90         if (report->maxfield == HID_MAX_FIELDS) {
  91                 dbg_hid("too many fields in report\n");
  92                 return NULL;
  93         }
  94
  95         if (!(field = kzalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
  96                 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
  97
  98         field->index = report->maxfield++;
  99         report->field[field->index] = field;
 100         field->usage = (struct hid_usage *)(field + 1);
 101         field->value = (s32 *)(field->usage + usages);
 102         field->report = report;
 103
 104         return field;
 105 }
 106
 107 /*
 108  * Open a collection. The type/usage is pushed on the stack.
 109  */
 110
 111 static int open_collection(struct hid_parser *parser, unsigned type)
 112 {
 113         struct hid_collection *collection;
 114         unsigned usage;
 115
 116         usage = parser->local.usage[0];
 117
 118         if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
 119                 dbg_hid("collection stack overflow\n");
 120                 return -1;
 121         }
 122
 123         if (parser->device->maxcollection == parser->device->collection_size) {
 124                 collection = kmalloc(sizeof(struct hid_collection) *
 125                                 parser->device->collection_size * 2, GFP_KERNEL);
 126                 if (collection == NULL) {
 127                         dbg_hid("failed to reallocate collection array\n");
 128                         return -1;
 129                 }
 130                 memcpy(collection, parser->device->collection,
 131                         sizeof(struct hid_collection) *
 132                         parser->device->collection_size);
 133                 memset(collection + parser->device->collection_size, 0,
 134                         sizeof(struct hid_collection) *
 135                         parser->device->collection_size);
 136                 kfree(parser->device->collection);
 137                 parser->device->collection = collection;
 138                 parser->device->collection_size *= 2;
 139         }
 140
 141         parser->collection_stack[parser->collection_stack_ptr++] =
 142                 parser->device->maxcollection;
 143
 144         collection = parser->device->collection +
 145                 parser->device->maxcollection++;
 146         collection->type = type;
 147         collection->usage = usage;
 148         collection->level = parser->collection_stack_ptr - 1;
 149
 150         if (type == HID_COLLECTION_APPLICATION)
 151                 parser->device->maxapplication++;
 152
 153         return 0;
 154 }
 155
 156 /*
 157  * Close a collection.
 158  */
 159
 160 static int close_collection(struct hid_parser *parser)
 161 {
 162         if (!parser->collection_stack_ptr) {
 163                 dbg_hid("collection stack underflow\n");
 164                 return -1;
 165         }
 166         parser->collection_stack_ptr--;
 167         return 0;
 168 }
 169
 170 /*
 171  * Climb up the stack, search for the specified collection type
 172  * and return the usage.
 173  */
 174
 175 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
 176 {
 177         int n;
 178         for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
 179                 if (parser->device->collection[parser->collection_stack[n]].type == type)
 180                         return parser->device->collection[parser->collection_stack[n]].usage;
 181         return 0; /* we know nothing about this usage type */
 182 }
 183
 184 /*
 185  * Add a usage to the temporary parser table.
 186  */
 187
 188 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
 189 {
 190         if (parser->local.usage_index >= HID_MAX_USAGES) {
 191                 dbg_hid("usage index exceeded\n");
 192                 return -1;
 193         }
 194         parser->local.usage[parser->local.usage_index] = usage;
 195         parser->local.collection_index[parser->local.usage_index] =
 196                 parser->collection_stack_ptr ?
 197                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
 198         parser->local.usage_index++;
 199         return 0;
 200 }
 201
 202 /*
 203  * Register a new field for this report.
 204  */
 205
 206 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
 207 {
 208         struct hid_report *report;
 209         struct hid_field *field;
 210         int usages;
 211         unsigned offset;
 212         int i;
 213
 214         if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
 215                 dbg_hid("hid_register_report failed\n");
 216                 return -1;
 217         }
 218
 219         if (parser->global.logical_maximum < parser->global.logical_minimum) {
 220                 dbg_hid("logical range invalid %d %d\n", parser->global.logical_minimum, parser->global.logical_maximum);
 221                 return -1;
 222         }
 223
 224         offset = report->size;
 225         report->size += parser->global.report_size * parser->global.report_count;
 226
 227         if (!parser->local.usage_index) /* Ignore padding fields */
 228                 return 0;
 229
 230         usages = max_t(int, parser->local.usage_index, parser->global.report_count);
 231
 232         if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
 233                 return 0;
 234
 235         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
 236         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
 237         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
 238
 239         for (i = 0; i < usages; i++) {
 240                 int j = i;
 241                 /* Duplicate the last usage we parsed if we have excess values */
 242                 if (i >= parser->local.usage_index)
 243                         j = parser->local.usage_index - 1;
 244                 field->usage[i].hid = parser->local.usage[j];
 245                 field->usage[i].collection_index =
 246                         parser->local.collection_index[j];
 247         }
 248
 249         field->maxusage = usages;
 250         field->flags = flags;
 251         field->report_offset = offset;
 252         field->report_type = report_type;
 253         field->report_size = parser->global.report_size;
 254         field->report_count = parser->global.report_count;
 255         field->logical_minimum = parser->global.logical_minimum;
 256         field->logical_maximum = parser->global.logical_maximum;
 257         field->physical_minimum = parser->global.physical_minimum;
 258         field->physical_maximum = parser->global.physical_maximum;
 259         field->unit_exponent = parser->global.unit_exponent;
 260         field->unit = parser->global.unit;
 261
 262         return 0;
 263 }
 264
 265 /*
 266  * Read data value from item.
 267  */
 268
 269 static u32 item_udata(struct hid_item *item)
 270 {
 271         switch (item->size) {
 272         case 1: return item->data.u8;
 273         case 2: return item->data.u16;
 274         case 4: return item->data.u32;
 275         }
 276         return 0;
 277 }
 278
 279 static s32 item_sdata(struct hid_item *item)
 280 {
 281         switch (item->size) {
 282         case 1: return item->data.s8;
 283         case 2: return item->data.s16;
 284         case 4: return item->data.s32;
 285         }
 286         return 0;
 287 }
 288
 289 /*
 290  * Process a global item.
 291  */
 292
 293 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
 294 {
 295         switch (item->tag) {
 296         case HID_GLOBAL_ITEM_TAG_PUSH:
 297
 298                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
 299                         dbg_hid("global enviroment stack overflow\n");
 300                         return -1;
 301                 }
 302
 303                 memcpy(parser->global_stack + parser->global_stack_ptr++,
 304                         &parser->global, sizeof(struct hid_global));
 305                 return 0;
 306
 307         case HID_GLOBAL_ITEM_TAG_POP:
 308
 309                 if (!parser->global_stack_ptr) {
 310                         dbg_hid("global enviroment stack underflow\n");
 311                         return -1;
 312                 }
 313
 314                 memcpy(&parser->global, parser->global_stack +
 315                         --parser->global_stack_ptr, sizeof(struct hid_global));
 316                 return 0;
 317
 318         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
 319                 parser->global.usage_page = item_udata(item);
 320                 return 0;
 321
 322         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
 323                 parser->global.logical_minimum = item_sdata(item);
 324                 return 0;
 325
 326         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
 327                 if (parser->global.logical_minimum < 0)
 328                         parser->global.logical_maximum = item_sdata(item);
 329                 else
 330                         parser->global.logical_maximum = item_udata(item);
 331                 return 0;
 332
 333         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
 334                 parser->global.physical_minimum = item_sdata(item);
 335                 return 0;
 336
 337         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
 338                 if (parser->global.physical_minimum < 0)
 339                         parser->global.physical_maximum = item_sdata(item);
 340                 else
 341                         parser->global.physical_maximum = item_udata(item);
 342                 return 0;
 343
 344         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
 345                 parser->global.unit_exponent = item_sdata(item);
 346                 return 0;
 347
 348         case HID_GLOBAL_ITEM_TAG_UNIT:
 349                 parser->global.unit = item_udata(item);
 350                 return 0;
 351
 352         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
 353                 parser->global.report_size = item_udata(item);
 354                 if (parser->global.report_size > 32) {
 355                         dbg_hid("invalid report_size %d\n",
 356                                         parser->global.report_size);
 357                         return -1;
 358                 }
 359                 return 0;
 360
 361         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
 362                 parser->global.report_count = item_udata(item);
 363                 if (parser->global.report_count > HID_MAX_USAGES) {
 364                         dbg_hid("invalid report_count %d\n",
 365                                         parser->global.report_count);
 366                         return -1;
 367                 }
 368                 return 0;
 369
 370         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
 371                 parser->global.report_id = item_udata(item);
 372                 if (parser->global.report_id == 0) {
 373                         dbg_hid("report_id 0 is invalid\n");
 374                         return -1;
 375                 }
 376                 return 0;
 377
 378         default:
 379                 dbg_hid("unknown global tag 0x%x\n", item->tag);
 380                 return -1;
 381         }
 382 }
 383
 384 /*
 385  * Process a local item.
 386  */
 387
 388 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 389 {
 390         __u32 data;
 391         unsigned n;
 392
 393         data = item_udata(item);
 394
 395         switch (item->tag) {
 396         case HID_LOCAL_ITEM_TAG_DELIMITER:
 397
 398                 if (data) {
 399                         /*
 400                          * We treat items before the first delimiter
 401                          * as global to all usage sets (branch 0).
 402                          * In the moment we process only these global
 403                          * items and the first delimiter set.
 404                          */
 405                         if (parser->local.delimiter_depth != 0) {
 406                                 dbg_hid("nested delimiters\n");
 407                                 return -1;
 408                         }
 409                         parser->local.delimiter_depth++;
 410                         parser->local.delimiter_branch++;
 411                 } else {
 412                         if (parser->local.delimiter_depth < 1) {
 413                                 dbg_hid("bogus close delimiter\n");
 414                                 return -1;
 415                         }
 416                         parser->local.delimiter_depth--;
 417                 }
 418                 return 1;
 419
 420         case HID_LOCAL_ITEM_TAG_USAGE:
 421
 422                 if (parser->local.delimiter_branch > 1) {
 423                         dbg_hid("alternative usage ignored\n");
 424                         return 0;
 425                 }
 426
 427                 if (item->size <= 2)
 428                         data = (parser->global.usage_page << 16) + data;
 429
 430                 return hid_add_usage(parser, data);
 431
 432         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 433
 434                 if (parser->local.delimiter_branch > 1) {
 435                         dbg_hid("alternative usage ignored\n");
 436                         return 0;
 437                 }
 438
 439                 if (item->size <= 2)
 440                         data = (parser->global.usage_page << 16) + data;
 441
 442                 parser->local.usage_minimum = data;
 443                 return 0;
 444
 445         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 446
 447                 if (parser->local.delimiter_branch > 1) {
 448                         dbg_hid("alternative usage ignored\n");
 449                         return 0;
 450                 }
 451
 452                 if (item->size <= 2)
 453                         data = (parser->global.usage_page << 16) + data;
 454
 455                 for (n = parser->local.usage_minimum; n <= data; n++)
 456                         if (hid_add_usage(parser, n)) {
 457                                 dbg_hid("hid_add_usage failed\n");
 458                                 return -1;
 459                         }
 460                 return 0;
 461
 462         default:
 463
 464                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
 465                 return 0;
 466         }
 467         return 0;
 468 }
 469
 470 /*
 471  * Process a main item.
 472  */
 473
 474 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
 475 {
 476         __u32 data;
 477         int ret;
 478
 479         data = item_udata(item);
 480
 481         switch (item->tag) {
 482         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 483                 ret = open_collection(parser, data & 0xff);
 484                 break;
 485         case HID_MAIN_ITEM_TAG_END_COLLECTION:
 486                 ret = close_collection(parser);
 487                 break;
 488         case HID_MAIN_ITEM_TAG_INPUT:
 489                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
 490                 break;
 491         case HID_MAIN_ITEM_TAG_OUTPUT:
 492                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
 493                 break;
 494         case HID_MAIN_ITEM_TAG_FEATURE:
 495                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
 496                 break;
 497         default:
 498                 dbg_hid("unknown main item tag 0x%x\n", item->tag);
 499                 ret = 0;
 500         }
 501
 502         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
 503
 504         return ret;
 505 }
 506
 507 /*
 508  * Process a reserved item.
 509  */
 510
 511 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
 512 {
 513         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
 514         return 0;
 515 }
 516
 517 /*
 518  * Free a report and all registered fields. The field->usage and
 519  * field->value table's are allocated behind the field, so we need
 520  * only to free(field) itself.
 521  */
 522
 523 static void hid_free_report(struct hid_report *report)
 524 {
 525         unsigned n;
 526
 527         for (n = 0; n < report->maxfield; n++)
 528                 kfree(report->field[n]);
 529         kfree(report);
 530 }
 531
 532 /*
 533  * Free a device structure, all reports, and all fields.
 534  */
 535
 536 static void hid_device_release(struct device *dev)
 537 {
 538         struct hid_device *device = container_of(dev, struct hid_device, dev);
 539         unsigned i, j;
 540
 541         for (i = 0; i < HID_REPORT_TYPES; i++) {
 542                 struct hid_report_enum *report_enum = device->report_enum + i;
 543
 544                 for (j = 0; j < 256; j++) {
 545                         struct hid_report *report = report_enum->report_id_hash[j];
 546                         if (report)
 547                                 hid_free_report(report);
 548                 }
 549         }
 550
 551         kfree(device->rdesc);
 552         kfree(device->collection);
 553         kfree(device);
 554 }
 555
 556 /*
 557  * Fetch a report description item from the data stream. We support long
 558  * items, though they are not used yet.
 559  */
 560
 561 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
 562 {
 563         u8 b;
 564
 565         if ((end - start) <= 0)
 566                 return NULL;
 567
 568         b = *start++;
 569
 570         item->type = (b >> 2) & 3;
 571         item->tag  = (b >> 4) & 15;
 572
 573         if (item->tag == HID_ITEM_TAG_LONG) {
 574
 575                 item->format = HID_ITEM_FORMAT_LONG;
 576
 577                 if ((end - start) < 2)
 578                         return NULL;
 579
 580                 item->size = *start++;
 581                 item->tag  = *start++;
 582
 583                 if ((end - start) < item->size)
 584                         return NULL;
 585
 586                 item->data.longdata = start;
 587                 start += item->size;
 588                 return start;
 589         }
 590
 591         item->format = HID_ITEM_FORMAT_SHORT;
 592         item->size = b & 3;
 593
 594         switch (item->size) {
 595         case 0:
 596                 return start;
 597
 598         case 1:
 599                 if ((end - start) < 1)
 600                         return NULL;
 601                 item->data.u8 = *start++;
 602                 return start;
 603
 604         case 2:
 605                 if ((end - start) < 2)
 606                         return NULL;
 607                 item->data.u16 = get_unaligned_le16(start);
 608                 start = (__u8 *)((__le16 *)start + 1);
 609                 return start;
 610
 611         case 3:
 612                 item->size++;
 613                 if ((end - start) < 4)
 614                         return NULL;
 615                 item->data.u32 = get_unaligned_le32(start);
 616                 start = (__u8 *)((__le32 *)start + 1);
 617                 return start;
 618         }
 619
 620         return NULL;
 621 }
 622
 623 /**
 624  * hid_parse_report - parse device report
 625  *
 626  * @device: hid device
 627  * @start: report start
 628  * @size: report size
 629  *
 630  * Parse a report description into a hid_device structure. Reports are
 631  * enumerated, fields are attached to these reports.
 632  * 0 returned on success, otherwise nonzero error value.
 633  */
 634 int hid_parse_report(struct hid_device *device, __u8 *start,
 635                 unsigned size)
 636 {
 637         struct hid_parser *parser;
 638         struct hid_item item;
 639         __u8 *end;
 640         int ret;
 641         static int (*dispatch_type[])(struct hid_parser *parser,
 642                                       struct hid_item *item) = {
 643                 hid_parser_main,
 644                 hid_parser_global,
 645                 hid_parser_local,
 646                 hid_parser_reserved
 647         };
 648
 649         if (device->driver->report_fixup)
 650                 start = device->driver->report_fixup(device, start, &size);
 651
 652         device->rdesc = kmemdup(start, size, GFP_KERNEL);
 653         if (device->rdesc == NULL)
 654                 return -ENOMEM;
 655         device->rsize = size;
 656
 657         parser = vzalloc(sizeof(struct hid_parser));
 658         if (!parser) {
 659                 ret = -ENOMEM;
 660                 goto err;
 661         }
 662
 663         parser->device = device;
 664
 665         end = start + size;
 666         ret = -EINVAL;
 667         while ((start = fetch_item(start, end, &item)) != NULL) {
 668
 669                 if (item.format != HID_ITEM_FORMAT_SHORT) {
 670                         dbg_hid("unexpected long global item\n");
 671                         goto err;
 672                 }
 673
 674                 if (dispatch_type[item.type](parser, &item)) {
 675                         dbg_hid("item %u %u %u %u parsing failed\n",
 676                                 item.format, (unsigned)item.size,
 677                                 (unsigned)item.type, (unsigned)item.tag);
 678                         goto err;
 679                 }
 680
 681                 if (start == end) {
 682                         if (parser->collection_stack_ptr) {
 683                                 dbg_hid("unbalanced collection at end of report description\n");
 684                                 goto err;
 685                         }
 686                         if (parser->local.delimiter_depth) {
 687                                 dbg_hid("unbalanced delimiter at end of report description\n");
 688                                 goto err;
 689                         }
 690                         vfree(parser);
 691                         return 0;
 692                 }
 693         }
 694
 695         dbg_hid("item fetching failed at offset %d\n", (int)(end - start));
 696 err:
 697         vfree(parser);
 698         return ret;
 699 }
 700 EXPORT_SYMBOL_GPL(hid_parse_report);
 701
 702 /*
 703  * Convert a signed n-bit integer to signed 32-bit integer. Common
 704  * cases are done through the compiler, the screwed things has to be
 705  * done by hand.
 706  */
 707
 708 static s32 snto32(__u32 value, unsigned n)
 709 {
 710         switch (n) {
 711         case 8:  return ((__s8)value);
 712         case 16: return ((__s16)value);
 713         case 32: return ((__s32)value);
 714         }
 715         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
 716 }
 717
 718 /*
 719  * Convert a signed 32-bit integer to a signed n-bit integer.
 720  */
 721
 722 static u32 s32ton(__s32 value, unsigned n)
 723 {
 724         s32 a = value >> (n - 1);
 725         if (a && a != -1)
 726                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
 727         return value & ((1 << n) - 1);
 728 }
 729
 730 /*
 731  * Extract/implement a data field from/to a little endian report (bit array).
 732  *
 733  * Code sort-of follows HID spec:
 734  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
 735  *
 736  * While the USB HID spec allows unlimited length bit fields in "report
 737  * descriptors", most devices never use more than 16 bits.
 738  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
 739  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
 740  */
 741
 742 static __inline__ __u32 extract(const struct hid_device *hid, __u8 *report,
 743                                 unsigned offset, unsigned n)
 744 {
 745         u64 x;
 746
 747         if (n > 32)
 748                 hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
 749                          n, current->comm);
 750
 751         report += offset >> 3;  /* adjust byte index */
 752         offset &= 7;            /* now only need bit offset into one byte */
 753         x = get_unaligned_le64(report);
 754         x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
 755         return (u32) x;
 756 }
 757
 758 /*
 759  * "implement" : set bits in a little endian bit stream.
 760  * Same concepts as "extract" (see comments above).
 761  * The data mangled in the bit stream remains in little endian
 762  * order the whole time. It make more sense to talk about
 763  * endianness of register values by considering a register
 764  * a "cached" copy of the little endiad bit stream.
 765  */
 766 static __inline__ void implement(const struct hid_device *hid, __u8 *report,
 767                                  unsigned offset, unsigned n, __u32 value)
 768 {
 769         u64 x;
 770         u64 m = (1ULL << n) - 1;
 771
 772         if (n > 32)
 773                 hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
 774                          __func__, n, current->comm);
 775
 776         if (value > m)
 777                 hid_warn(hid, "%s() called with too large value %d! (%s)\n",
 778                          __func__, value, current->comm);
 779         WARN_ON(value > m);
 780         value &= m;
 781
 782         report += offset >> 3;
 783         offset &= 7;
 784
 785         x = get_unaligned_le64(report);
 786         x &= ~(m << offset);
 787         x |= ((u64)value) << offset;
 788         put_unaligned_le64(x, report);
 789 }
 790
 791 /*
 792  * Search an array for a value.
 793  */
 794
 795 static __inline__ int search(__s32 *array, __s32 value, unsigned n)
 796 {
 797         while (n--) {
 798                 if (*array++ == value)
 799                         return 0;
 800         }
 801         return -1;
 802 }
 803
 804 /**
 805  * hid_match_report - check if driver's raw_event should be called
 806  *
 807  * @hid: hid device
 808  * @report_type: type to match against
 809  *
 810  * compare hid->driver->report_table->report_type to report->type
 811  */
 812 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
 813 {
 814         const struct hid_report_id *id = hid->driver->report_table;
 815
 816         if (!id) /* NULL means all */
 817                 return 1;
 818
 819         for (; id->report_type != HID_TERMINATOR; id++)
 820                 if (id->report_type == HID_ANY_ID ||
 821                                 id->report_type == report->type)
 822                         return 1;
 823         return 0;
 824 }
 825
 826 /**
 827  * hid_match_usage - check if driver's event should be called
 828  *
 829  * @hid: hid device
 830  * @usage: usage to match against
 831  *
 832  * compare hid->driver->usage_table->usage_{type,code} to
 833  * usage->usage_{type,code}
 834  */
 835 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
 836 {
 837         const struct hid_usage_id *id = hid->driver->usage_table;
 838
 839         if (!id) /* NULL means all */
 840                 return 1;
 841
 842         for (; id->usage_type != HID_ANY_ID - 1; id++)
 843                 if ((id->usage_hid == HID_ANY_ID ||
 844                                 id->usage_hid == usage->hid) &&
 845                                 (id->usage_type == HID_ANY_ID ||
 846                                 id->usage_type == usage->type) &&
 847                                 (id->usage_code == HID_ANY_ID ||
 848                                  id->usage_code == usage->code))
 849                         return 1;
 850         return 0;
 851 }
 852
 853 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
 854                 struct hid_usage *usage, __s32 value, int interrupt)
 855 {
 856         struct hid_driver *hdrv = hid->driver;
 857         int ret;
 858
 859         hid_dump_input(hid, usage, value);
 860
 861         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
 862                 ret = hdrv->event(hid, field, usage, value);
 863                 if (ret != 0) {
 864                         if (ret < 0)
 865                                 dbg_hid("%s's event failed with %d\n",
 866                                                 hdrv->name, ret);
 867                         return;
 868                 }
 869         }
 870
 871         if (hid->claimed & HID_CLAIMED_INPUT)
 872                 hidinput_hid_event(hid, field, usage, value);
 873         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
 874                 hid->hiddev_hid_event(hid, field, usage, value);
 875 }
 876
 877 /*
 878  * Analyse a received field, and fetch the data from it. The field
 879  * content is stored for next report processing (we do differential
 880  * reporting to the layer).
 881  */
 882
 883 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
 884                             __u8 *data, int interrupt)
 885 {
 886         unsigned n;
 887         unsigned count = field->report_count;
 888         unsigned offset = field->report_offset;
 889         unsigned size = field->report_size;
 890         __s32 min = field->logical_minimum;
 891         __s32 max = field->logical_maximum;
 892         __s32 *value;
 893
 894         if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC)))
 895                 return;
 896
 897         for (n = 0; n < count; n++) {
 898
 899                 value[n] = min < 0 ?
 900                         snto32(extract(hid, data, offset + n * size, size),
 901                                size) :
 902                         extract(hid, data, offset + n * size, size);
 903
 904                 /* Ignore report if ErrorRollOver */
 905                 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
 906                     value[n] >= min && value[n] <= max &&
 907                     field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
 908                         goto exit;
 909         }
 910
 911         for (n = 0; n < count; n++) {
 912
 913                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
 914                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
 915                         continue;
 916                 }
 917
 918                 if (field->value[n] >= min && field->value[n] <= max
 919                         && field->usage[field->value[n] - min].hid
 920                         && search(value, field->value[n], count))
 921                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
 922
 923                 if (value[n] >= min && value[n] <= max
 924                         && field->usage[value[n] - min].hid
 925                         && search(field->value, value[n], count))
 926                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
 927         }
 928
 929         memcpy(field->value, value, count * sizeof(__s32));
 930 exit:
 931         kfree(value);
 932 }
 933
 934 /*
 935  * Output the field into the report.
 936  */
 937
 938 static void hid_output_field(const struct hid_device *hid,
 939                              struct hid_field *field, __u8 *data)
 940 {
 941         unsigned count = field->report_count;
 942         unsigned offset = field->report_offset;
 943         unsigned size = field->report_size;
 944         unsigned n;
 945
 946         for (n = 0; n < count; n++) {
 947                 if (field->logical_minimum < 0) /* signed values */
 948                         implement(hid, data, offset + n * size, size,
 949                                   s32ton(field->value[n], size));
 950                 else                            /* unsigned values */
 951                         implement(hid, data, offset + n * size, size,
 952                                   field->value[n]);
 953         }
 954 }
 955
 956 /*
 957  * Create a report.
 958  */
 959
 960 void hid_output_report(struct hid_report *report, __u8 *data)
 961 {
 962         unsigned n;
 963
 964         if (report->id > 0)
 965                 *data++ = report->id;
 966
 967         memset(data, 0, ((report->size - 1) >> 3) + 1);
 968         for (n = 0; n < report->maxfield; n++)
 969                 hid_output_field(report->device, report->field[n], data);
 970 }
 971 EXPORT_SYMBOL_GPL(hid_output_report);
 972
 973 /*
 974  * Set a field value. The report this field belongs to has to be
 975  * created and transferred to the device, to set this value in the
 976  * device.
 977  */
 978
 979 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
 980 {
 981         unsigned size = field->report_size;
 982
 983         hid_dump_input(field->report->device, field->usage + offset, value);
 984
 985         if (offset >= field->report_count) {
 986                 dbg_hid("offset (%d) exceeds report_count (%d)\n", offset, field->report_count);
 987                 return -1;
 988         }
 989         if (field->logical_minimum < 0) {
 990                 if (value != snto32(s32ton(value, size), size)) {
 991                         dbg_hid("value %d is out of range\n", value);
 992                         return -1;
 993                 }
 994         }
 995         field->value[offset] = value;
 996         return 0;
 997 }
 998 EXPORT_SYMBOL_GPL(hid_set_field);
 999
1000 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1001                 const u8 *data)
1002 {
1003         struct hid_report *report;
1004         unsigned int n = 0;     /* Normally report number is 0 */
1005
1006         /* Device uses numbered reports, data[0] is report number */
1007         if (report_enum->numbered)
1008                 n = *data;
1009
1010         report = report_enum->report_id_hash[n];
1011         if (report == NULL)
1012                 dbg_hid("undefined report_id %u received\n", n);
1013
1014         return report;
1015 }
1016
1017 void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1018                 int interrupt)
1019 {
1020         struct hid_report_enum *report_enum = hid->report_enum + type;
1021         struct hid_report *report;
1022         unsigned int a;
1023         int rsize, csize = size;
1024         u8 *cdata = data;
1025
1026         report = hid_get_report(report_enum, data);
1027         if (!report)
1028                 return;
1029
1030         if (report_enum->numbered) {
1031                 cdata++;
1032                 csize--;
1033         }
1034
1035         rsize = ((report->size - 1) >> 3) + 1;
1036
1037         if (csize < rsize) {
1038                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1039                                 csize, rsize);
1040                 memset(cdata + csize, 0, rsize - csize);
1041         }
1042
1043         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1044                 hid->hiddev_report_event(hid, report);
1045         if (hid->claimed & HID_CLAIMED_HIDRAW)
1046                 hidraw_report_event(hid, data, size);
1047
1048         for (a = 0; a < report->maxfield; a++)
1049                 hid_input_field(hid, report->field[a], cdata, interrupt);
1050
1051         if (hid->claimed & HID_CLAIMED_INPUT)
1052                 hidinput_report_event(hid, report);
1053 }
1054 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1055
1056 /**
1057  * hid_input_report - report data from lower layer (usb, bt...)
1058  *
1059  * @hid: hid device
1060  * @type: HID report type (HID_*_REPORT)
1061  * @data: report contents
1062  * @size: size of data parameter
1063  * @interrupt: distinguish between interrupt and control transfers
1064  *
1065  * This is data entry for lower layers.
1066  */
1067 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1068 {
1069         struct hid_report_enum *report_enum;
1070         struct hid_driver *hdrv;
1071         struct hid_report *report;
1072         char *buf;
1073         unsigned int i;
1074         int ret;
1075
1076         if (!hid || !hid->driver)
1077                 return -ENODEV;
1078         report_enum = hid->report_enum + type;
1079         hdrv = hid->driver;
1080
1081         if (!size) {
1082                 dbg_hid("empty report\n");
1083                 return -1;
1084         }
1085
1086         buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
1087
1088         if (!buf)
1089                 goto nomem;
1090
1091         /* dump the report */
1092         snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1093                         "\nreport (size %u) (%snumbered) = ", size, report_enum->numbered ? "" : "un");
1094         hid_debug_event(hid, buf);
1095
1096         for (i = 0; i < size; i++) {
1097                 snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1098                                 " %02x", data[i]);
1099                 hid_debug_event(hid, buf);
1100         }
1101         hid_debug_event(hid, "\n");
1102         kfree(buf);
1103
1104 nomem:
1105         report = hid_get_report(report_enum, data);
1106
1107         if (!report)
1108                 return -1;
1109
1110         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1111                 ret = hdrv->raw_event(hid, report, data, size);
1112                 if (ret != 0)
1113                         return ret < 0 ? ret : 0;
1114         }
1115
1116         hid_report_raw_event(hid, type, data, size, interrupt);
1117
1118         return 0;
1119 }
1120 EXPORT_SYMBOL_GPL(hid_input_report);
1121
1122 static bool hid_match_one_id(struct hid_device *hdev,
1123                 const struct hid_device_id *id)
1124 {
1125         return id->bus == hdev->bus &&
1126                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1127                 (id->product == HID_ANY_ID || id->product == hdev->product);
1128 }
1129
1130 static const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1131                 const struct hid_device_id *id)
1132 {
1133         for (; id->bus; id++)
1134                 if (hid_match_one_id(hdev, id))
1135                         return id;
1136
1137         return NULL;
1138 }
1139
1140 static const struct hid_device_id hid_hiddev_list[] = {
1141         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1142         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1143         { }
1144 };
1145
1146 static bool hid_hiddev(struct hid_device *hdev)
1147 {
1148         return !!hid_match_id(hdev, hid_hiddev_list);
1149 }
1150
1151 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1152 {
1153         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1154                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1155                 "Multi-Axis Controller"
1156         };
1157         const char *type, *bus;
1158         char buf[64];
1159         unsigned int i;
1160         int len;
1161
1162         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1163                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1164         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1165                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1166         if (hdev->bus != BUS_USB)
1167                 connect_mask &= ~HID_CONNECT_HIDDEV;
1168         if (hid_hiddev(hdev))
1169                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1170
1171         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1172                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1173                 hdev->claimed |= HID_CLAIMED_INPUT;
1174         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1175                         !hdev->hiddev_connect(hdev,
1176                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1177                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1178         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1179                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1180
1181         if (!hdev->claimed) {
1182                 hid_err(hdev, "claimed by neither input, hiddev nor hidraw\n");
1183                 return -ENODEV;
1184         }
1185
1186         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1187                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1188                 hdev->ff_init(hdev);
1189
1190         len = 0;
1191         if (hdev->claimed & HID_CLAIMED_INPUT)
1192                 len += sprintf(buf + len, "input");
1193         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1194                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1195                                 hdev->minor);
1196         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1197                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1198                                 ((struct hidraw *)hdev->hidraw)->minor);
1199
1200         type = "Device";
1201         for (i = 0; i < hdev->maxcollection; i++) {
1202                 struct hid_collection *col = &hdev->collection[i];
1203                 if (col->type == HID_COLLECTION_APPLICATION &&
1204                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1205                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1206                         type = types[col->usage & 0xffff];
1207                         break;
1208                 }
1209         }
1210
1211         switch (hdev->bus) {
1212         case BUS_USB:
1213                 bus = "USB";
1214                 break;
1215         case BUS_BLUETOOTH:
1216                 bus = "BLUETOOTH";
1217                 break;
1218         default:
1219                 bus = "<UNKNOWN>";
1220         }
1221
1222         hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1223                  buf, bus, hdev->version >> 8, hdev->version & 0xff,
1224                  type, hdev->name, hdev->phys);
1225
1226         return 0;
1227 }
1228 EXPORT_SYMBOL_GPL(hid_connect);
1229
1230 void hid_disconnect(struct hid_device *hdev)
1231 {
1232         if (hdev->claimed & HID_CLAIMED_INPUT)
1233                 hidinput_disconnect(hdev);
1234         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1235                 hdev->hiddev_disconnect(hdev);
1236         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1237                 hidraw_disconnect(hdev);
1238 }
1239 EXPORT_SYMBOL_GPL(hid_disconnect);
1240
1241 /* a list of devices for which there is a specialized driver on HID bus */
1242 static const struct hid_device_id hid_have_special_driver[] = {
1243         { HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M1968) },
1244         { HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M2256) },
1245         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1246         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1247         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1248 #if defined(CONFIG_HID_ACRUX_FF) || defined(CONFIG_HID_ACRUX_FF_MODULE)
1249         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1250 #endif
1251         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) },
1252         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1253         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1254         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1255         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1256         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1257         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1258         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1259         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1260         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1261         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1262         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1263         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1264         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1265         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1266         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1267         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1268         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1269         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1270         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1271         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1272         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1273         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1274         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1275         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1276         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1277         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1278         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1279         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1280         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1281         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1282         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1283         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1284         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1285         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1286         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1287         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1288         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1289         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1290         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1291         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1292         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1293         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1294         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1295         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1296         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1297         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1298         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1299         { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_T91MT) },
1300         { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1301         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1302         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1303         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1304         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1305         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
1306         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1307         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1308         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1309         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1310         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1311         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1312         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1313         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1314         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1315         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1316         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1317         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
1318         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
1319         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1320         { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1321         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1322         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1323         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1324         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1325         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1326         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1327         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1328         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1329         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1330         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1331         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1332         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1333         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1334         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1335         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1336         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1337         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1338         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1339         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1340         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1341         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1342         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1343         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1344         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1345         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1346         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1347         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1348         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1349         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1350         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1351         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1352         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1353         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1354         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1355         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1356         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1357         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1358         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1359         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1360         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1361         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1362         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1363         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1364         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1365         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1366         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1367         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1368         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1369         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1370         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1371         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1372         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1373         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1374         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1375         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1376         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1377         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1378         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1379         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1380         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1381         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1382         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1383         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1384         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1385         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1386         { HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1387         { HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_PIXART_IMAGING_INC_OPTICAL_TOUCH_SCREEN) },
1388         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1389         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1390         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1391         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1392         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1393         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1394         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1395         { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, USB_DEVICE_ID_MTP) },
1396         { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, USB_DEVICE_ID_MTP_STM) },
1397         { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX, USB_DEVICE_ID_MTP_SITRONIX) },
1398         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1399         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1400         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1401         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1402         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1403         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1404         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1405         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1406         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1407         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1408         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1409         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1410         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1411         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1412         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1413         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1414         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1415         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1416         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1417         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1418         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1419         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1420         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1421         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1422
1423         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1424         { }
1425 };
1426
1427 struct hid_dynid {
1428         struct list_head list;
1429         struct hid_device_id id;
1430 };
1431
1432 /**
1433  * store_new_id - add a new HID device ID to this driver and re-probe devices
1434  * @driver: target device driver
1435  * @buf: buffer for scanning device ID data
1436  * @count: input size
1437  *
1438  * Adds a new dynamic hid device ID to this driver,
1439  * and causes the driver to probe for all devices again.
1440  */
1441 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1442                 size_t count)
1443 {
1444         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1445         struct hid_dynid *dynid;
1446         __u32 bus, vendor, product;
1447         unsigned long driver_data = 0;
1448         int ret;
1449
1450         ret = sscanf(buf, "%x %x %x %lx",
1451                         &bus, &vendor, &product, &driver_data);
1452         if (ret < 3)
1453                 return -EINVAL;
1454
1455         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1456         if (!dynid)
1457                 return -ENOMEM;
1458
1459         dynid->id.bus = bus;
1460         dynid->id.vendor = vendor;
1461         dynid->id.product = product;
1462         dynid->id.driver_data = driver_data;
1463
1464         spin_lock(&hdrv->dyn_lock);
1465         list_add_tail(&dynid->list, &hdrv->dyn_list);
1466         spin_unlock(&hdrv->dyn_lock);
1467
1468         ret = 0;
1469         if (get_driver(&hdrv->driver)) {
1470                 ret = driver_attach(&hdrv->driver);
1471                 put_driver(&hdrv->driver);
1472         }
1473
1474         return ret ? : count;
1475 }
1476 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1477
1478 static void hid_free_dynids(struct hid_driver *hdrv)
1479 {
1480         struct hid_dynid *dynid, *n;
1481
1482         spin_lock(&hdrv->dyn_lock);
1483         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1484                 list_del(&dynid->list);
1485                 kfree(dynid);
1486         }
1487         spin_unlock(&hdrv->dyn_lock);
1488 }
1489
1490 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1491                 struct hid_driver *hdrv)
1492 {
1493         struct hid_dynid *dynid;
1494
1495         spin_lock(&hdrv->dyn_lock);
1496         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1497                 if (hid_match_one_id(hdev, &dynid->id)) {
1498                         spin_unlock(&hdrv->dyn_lock);
1499                         return &dynid->id;
1500                 }
1501         }
1502         spin_unlock(&hdrv->dyn_lock);
1503
1504         return hid_match_id(hdev, hdrv->id_table);
1505 }
1506
1507 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1508 {
1509         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1510         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1511
1512         if (!hid_match_device(hdev, hdrv))
1513                 return 0;
1514
1515         /* generic wants all that don't have specialized driver */
1516         if (!strncmp(hdrv->name, "generic-", 8))
1517                 return !hid_match_id(hdev, hid_have_special_driver);
1518
1519         return 1;
1520 }
1521
1522 static int hid_device_probe(struct device *dev)
1523 {
1524         struct hid_driver *hdrv = container_of(dev->driver,
1525                         struct hid_driver, driver);
1526         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1527         const struct hid_device_id *id;
1528         int ret = 0;
1529
1530         if (!hdev->driver) {
1531                 id = hid_match_device(hdev, hdrv);
1532                 if (id == NULL)
1533                         return -ENODEV;
1534
1535                 hdev->driver = hdrv;
1536                 if (hdrv->probe) {
1537                         ret = hdrv->probe(hdev, id);
1538                 } else { /* default probe */
1539                         ret = hid_parse(hdev);
1540                         if (!ret)
1541                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1542                 }
1543                 if (ret)
1544                         hdev->driver = NULL;
1545         }
1546         return ret;
1547 }
1548
1549 static int hid_device_remove(struct device *dev)
1550 {
1551         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1552         struct hid_driver *hdrv = hdev->driver;
1553
1554         if (hdrv) {
1555                 if (hdrv->remove)
1556                         hdrv->remove(hdev);
1557                 else /* default remove */
1558                         hid_hw_stop(hdev);
1559                 hdev->driver = NULL;
1560         }
1561
1562         return 0;
1563 }
1564
1565 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1566 {
1567         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1568
1569         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
1570                         hdev->bus, hdev->vendor, hdev->product))
1571                 return -ENOMEM;
1572
1573         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
1574                 return -ENOMEM;
1575
1576         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
1577                 return -ENOMEM;
1578
1579         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
1580                 return -ENOMEM;
1581
1582         if (add_uevent_var(env, "MODALIAS=hid:b%04Xv%08Xp%08X",
1583                         hdev->bus, hdev->vendor, hdev->product))
1584                 return -ENOMEM;
1585
1586         return 0;
1587 }
1588
1589 static struct bus_type hid_bus_type = {
1590         .name           = "hid",
1591         .match          = hid_bus_match,
1592         .probe          = hid_device_probe,
1593         .remove         = hid_device_remove,
1594         .uevent         = hid_uevent,
1595 };
1596
1597 /* a list of devices that shouldn't be handled by HID core at all */
1598 static const struct hid_device_id hid_ignore_list[] = {
1599         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
1600         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
1601         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
1602         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
1603         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
1604         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
1605         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
1606         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
1607         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
1608         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
1609         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
1610         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
1611         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
1612         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
1613         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
1614         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
1615         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
1616         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
1617         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
1618         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
1619         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
1620         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
1621         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
1622         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
1623         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
1624         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
1625         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
1626         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
1627         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
1628         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0003) },
1629         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
1630         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
1631         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
1632         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
1633         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
1634         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
1635         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
1636         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
1637         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
1638         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
1639         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
1640         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
1641         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
1642         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
1643         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
1644         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
1645         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
1646         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
1647         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
1648         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
1649         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
1650         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
1651         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
1652         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
1653         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
1654         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
1655         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
1656         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
1657         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
1658         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
1659         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
1660         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
1661         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
1662         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
1663         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
1664         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
1665         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
1666         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
1667         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
1668         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
1669         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
1670         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
1671         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
1672         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
1673         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
1674         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
1675         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
1676         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
1677         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
1678         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
1679         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
1680         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
1681         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
1682         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
1683         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
1684         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
1685         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
1686         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
1687         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
1688         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
1689         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
1690         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
1691         { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_JESS_YUREX) },
1692         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
1693         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
1694         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
1695         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
1696         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
1697         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
1698         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
1699         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
1700         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
1701         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
1702         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY1) },
1703         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
1704         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
1705         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
1706         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
1707         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
1708         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
1709         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
1710         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
1711         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
1712         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
1713         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
1714         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
1715         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
1716         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
1717         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
1718         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
1719         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
1720         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
1721         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
1722         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
1723         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
1724         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
1725         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
1726         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
1727         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
1728         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
1729         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
1730         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
1731         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
1732         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
1733         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
1734         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
1735         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
1736         { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
1737         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
1738         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
1739         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
1740         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
1741         { }
1742 };
1743
1744 /**
1745  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
1746  *
1747  * There are composite devices for which we want to ignore only a certain
1748  * interface. This is a list of devices for which only the mouse interface will
1749  * be ignored. This allows a dedicated driver to take care of the interface.
1750  */
1751 static const struct hid_device_id hid_mouse_ignore_list[] = {
1752         /* appletouch driver */
1753         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1754         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1755         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1756         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1757         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1758         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1759         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1760         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1761         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1762         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1763         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1764         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1765         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1766         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1767         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1768         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1769         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1770         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1771         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1772         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1773         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1774         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1775         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1776         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1777         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1778         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1779         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1780         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1781         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1782         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1783         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1784         { }
1785 };
1786
1787 static bool hid_ignore(struct hid_device *hdev)
1788 {
1789         switch (hdev->vendor) {
1790         case USB_VENDOR_ID_CODEMERCS:
1791                 /* ignore all Code Mercenaries IOWarrior devices */
1792                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
1793                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
1794                         return true;
1795                 break;
1796         case USB_VENDOR_ID_LOGITECH:
1797                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
1798                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
1799                         return true;
1800                 break;
1801         case USB_VENDOR_ID_SOUNDGRAPH:
1802                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
1803                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
1804                         return true;
1805                 break;
1806         }
1807
1808         if (hdev->type == HID_TYPE_USBMOUSE &&
1809                         hid_match_id(hdev, hid_mouse_ignore_list))
1810                 return true;
1811
1812         return !!hid_match_id(hdev, hid_ignore_list);
1813 }
1814
1815 int hid_add_device(struct hid_device *hdev)
1816 {
1817         static atomic_t id = ATOMIC_INIT(0);
1818         int ret;
1819
1820         if (WARN_ON(hdev->status & HID_STAT_ADDED))
1821                 return -EBUSY;
1822
1823         /* we need to kill them here, otherwise they will stay allocated to
1824          * wait for coming driver */
1825         if (!(hdev->quirks & HID_QUIRK_NO_IGNORE)
1826             && (hid_ignore(hdev) || (hdev->quirks & HID_QUIRK_IGNORE)))
1827                 return -ENODEV;
1828
1829         /* XXX hack, any other cleaner solution after the driver core
1830          * is converted to allow more than 20 bytes as the device name? */
1831         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
1832                      hdev->vendor, hdev->product, atomic_inc_return(&id));
1833
1834         hid_debug_register(hdev, dev_name(&hdev->dev));
1835         ret = device_add(&hdev->dev);
1836         if (!ret)
1837                 hdev->status |= HID_STAT_ADDED;
1838         else
1839                 hid_debug_unregister(hdev);
1840
1841         return ret;
1842 }
1843 EXPORT_SYMBOL_GPL(hid_add_device);
1844
1845 /**
1846  * hid_allocate_device - allocate new hid device descriptor
1847  *
1848  * Allocate and initialize hid device, so that hid_destroy_device might be
1849  * used to free it.
1850  *
1851  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
1852  * error value.
1853  */
1854 struct hid_device *hid_allocate_device(void)
1855 {
1856         struct hid_device *hdev;
1857         unsigned int i;
1858         int ret = -ENOMEM;
1859
1860         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
1861         if (hdev == NULL)
1862                 return ERR_PTR(ret);
1863
1864         device_initialize(&hdev->dev);
1865         hdev->dev.release = hid_device_release;
1866         hdev->dev.bus = &hid_bus_type;
1867
1868         hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
1869                         sizeof(struct hid_collection), GFP_KERNEL);
1870         if (hdev->collection == NULL)
1871                 goto err;
1872         hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
1873
1874         for (i = 0; i < HID_REPORT_TYPES; i++)
1875                 INIT_LIST_HEAD(&hdev->report_enum[i].report_list);
1876
1877         init_waitqueue_head(&hdev->debug_wait);
1878         INIT_LIST_HEAD(&hdev->debug_list);
1879
1880         return hdev;
1881 err:
1882         put_device(&hdev->dev);
1883         return ERR_PTR(ret);
1884 }
1885 EXPORT_SYMBOL_GPL(hid_allocate_device);
1886
1887 static void hid_remove_device(struct hid_device *hdev)
1888 {
1889         if (hdev->status & HID_STAT_ADDED) {
1890                 device_del(&hdev->dev);
1891                 hid_debug_unregister(hdev);
1892                 hdev->status &= ~HID_STAT_ADDED;
1893         }
1894 }
1895
1896 /**
1897  * hid_destroy_device - free previously allocated device
1898  *
1899  * @hdev: hid device
1900  *
1901  * If you allocate hid_device through hid_allocate_device, you should ever
1902  * free by this function.
1903  */
1904 void hid_destroy_device(struct hid_device *hdev)
1905 {
1906         hid_remove_device(hdev);
1907         put_device(&hdev->dev);
1908 }
1909 EXPORT_SYMBOL_GPL(hid_destroy_device);
1910
1911 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
1912                 const char *mod_name)
1913 {
1914         int ret;
1915
1916         hdrv->driver.name = hdrv->name;
1917         hdrv->driver.bus = &hid_bus_type;
1918         hdrv->driver.owner = owner;
1919         hdrv->driver.mod_name = mod_name;
1920
1921         INIT_LIST_HEAD(&hdrv->dyn_list);
1922         spin_lock_init(&hdrv->dyn_lock);
1923
1924         ret = driver_register(&hdrv->driver);
1925         if (ret)
1926                 return ret;
1927
1928         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
1929         if (ret)
1930                 driver_unregister(&hdrv->driver);
1931
1932         return ret;
1933 }
1934 EXPORT_SYMBOL_GPL(__hid_register_driver);
1935
1936 void hid_unregister_driver(struct hid_driver *hdrv)
1937 {
1938         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
1939         driver_unregister(&hdrv->driver);
1940         hid_free_dynids(hdrv);
1941 }
1942 EXPORT_SYMBOL_GPL(hid_unregister_driver);
1943
1944 int hid_check_keys_pressed(struct hid_device *hid)
1945 {
1946         struct hid_input *hidinput;
1947         int i;
1948
1949         if (!(hid->claimed & HID_CLAIMED_INPUT))
1950                 return 0;
1951
1952         list_for_each_entry(hidinput, &hid->inputs, list) {
1953                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
1954                         if (hidinput->input->key[i])
1955                                 return 1;
1956         }
1957
1958         return 0;
1959 }
1960
1961 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
1962
1963 static int __init hid_init(void)
1964 {
1965         int ret;
1966
1967         if (hid_debug)
1968                 pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
1969                         "debugfs is now used for inspecting the device (report descriptor, reports)\n");
1970
1971         ret = bus_register(&hid_bus_type);
1972         if (ret) {
1973                 pr_err("can't register hid bus\n");
1974                 goto err;
1975         }
1976
1977         ret = hidraw_init();
1978         if (ret)
1979                 goto err_bus;
1980
1981         hid_debug_init();
1982
1983         return 0;
1984 err_bus:
1985         bus_unregister(&hid_bus_type);
1986 err:
1987         return ret;
1988 }
1989
1990 static void __exit hid_exit(void)
1991 {
1992         hid_debug_exit();
1993         hidraw_exit();
1994         bus_unregister(&hid_bus_type);
1995 }
1996
1997 module_init(hid_init);
1998 module_exit(hid_exit);
1999
2000 MODULE_AUTHOR("Andreas Gal");
2001 MODULE_AUTHOR("Vojtech Pavlik");
2002 MODULE_AUTHOR("Jiri Kosina");
2003 MODULE_LICENSE(DRIVER_LICENSE);
2004