drivers/usb/input/hid-core.c

   1 /*
   2  *  USB HID support for Linux
   3  *
   4  *  Copyright (c) 1999 Andreas Gal
   5  *  Copyright (c) 2000-2001 Vojtech Pavlik <vojtech@suse.cz>
   6  */
   7
   8 /*
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by the Free
  11  * Software Foundation; either version 2 of the License, or (at your option)
  12  * any later version.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/slab.h>
  17 #include <linux/init.h>
  18 #include <linux/kernel.h>
  19 #include <linux/sched.h>
  20 #include <linux/list.h>
  21 #include <linux/mm.h>
  22 #include <linux/smp_lock.h>
  23 #include <linux/spinlock.h>
  24 #include <asm/unaligned.h>
  25 #include <asm/byteorder.h>
  26 #include <linux/input.h>
  27
  28 #undef DEBUG
  29 #undef DEBUG_DATA
  30
  31 #include <linux/usb.h>
  32
  33 #include "hid.h"
  34 #include <linux/hiddev.h>
  35
  36 /*
  37  * Version Information
  38  */
  39
  40 #define DRIVER_VERSION "v2.0"
  41 #define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik"
  42 #define DRIVER_DESC "USB HID core driver"
  43 #define DRIVER_LICENSE "GPL"
  44
  45 static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
  46                                 "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
  47
  48 /*
  49  * Register a new report for a device.
  50  */
  51
  52 static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
  53 {
  54         struct hid_report_enum *report_enum = device->report_enum + type;
  55         struct hid_report *report;
  56
  57         if (report_enum->report_id_hash[id])
  58                 return report_enum->report_id_hash[id];
  59
  60         if (!(report = kmalloc(sizeof(struct hid_report), GFP_KERNEL)))
  61                 return NULL;
  62         memset(report, 0, sizeof(struct hid_report));
  63
  64         if (id != 0)
  65                 report_enum->numbered = 1;
  66
  67         report->id = id;
  68         report->type = type;
  69         report->size = 0;
  70         report->device = device;
  71         report_enum->report_id_hash[id] = report;
  72
  73         list_add_tail(&report->list, &report_enum->report_list);
  74
  75         return report;
  76 }
  77
  78 /*
  79  * Register a new field for this report.
  80  */
  81
  82 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
  83 {
  84         struct hid_field *field;
  85
  86         if (report->maxfield == HID_MAX_FIELDS) {
  87                 dbg("too many fields in report");
  88                 return NULL;
  89         }
  90
  91         if (!(field = kmalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
  92                 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
  93
  94         memset(field, 0, sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
  95                 + values * sizeof(unsigned));
  96
  97         report->field[report->maxfield++] = field;
  98         field->usage = (struct hid_usage *)(field + 1);
  99         field->value = (unsigned *)(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("collection stack overflow");
 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,
 124                                      GFP_KERNEL);
 125                 if (collection == NULL) {
 126                         dbg("failed to reallocate collection array");
 127                         return -1;
 128                 }
 129                 memcpy(collection, parser->device->collection,
 130                        sizeof(struct hid_collection) *
 131                        parser->device->collection_size);
 132                 memset(collection + parser->device->collection_size, 0,
 133                        sizeof(struct hid_collection) *
 134                        parser->device->collection_size);
 135                 kfree(parser->device->collection);
 136                 parser->device->collection = collection;
 137                 parser->device->collection_size *= 2;
 138         }
 139
 140         parser->collection_stack[parser->collection_stack_ptr++] =
 141                 parser->device->maxcollection;
 142
 143         collection = parser->device->collection +
 144                 parser->device->maxcollection++;
 145         collection->type = type;
 146         collection->usage = usage;
 147         collection->level = parser->collection_stack_ptr - 1;
 148
 149         if (type == HID_COLLECTION_APPLICATION)
 150                 parser->device->maxapplication++;
 151
 152         return 0;
 153 }
 154
 155 /*
 156  * Close a collection.
 157  */
 158
 159 static int close_collection(struct hid_parser *parser)
 160 {
 161         if (!parser->collection_stack_ptr) {
 162                 dbg("collection stack underflow");
 163                 return -1;
 164         }
 165         parser->collection_stack_ptr--;
 166         return 0;
 167 }
 168
 169 /*
 170  * Climb up the stack, search for the specified collection type
 171  * and return the usage.
 172  */
 173
 174 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
 175 {
 176         int n;
 177         for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
 178                 if (parser->device->collection[parser->collection_stack[n]].type == type)
 179                         return parser->device->collection[parser->collection_stack[n]].usage;
 180         return 0; /* we know nothing about this usage type */
 181 }
 182
 183 /*
 184  * Add a usage to the temporary parser table.
 185  */
 186
 187 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
 188 {
 189         if (parser->local.usage_index >= HID_MAX_USAGES) {
 190                 dbg("usage index exceeded");
 191                 return -1;
 192         }
 193         parser->local.usage[parser->local.usage_index] = usage;
 194         parser->local.collection_index[parser->local.usage_index] =
 195                 parser->collection_stack_ptr ?
 196                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
 197         parser->local.usage_index++;
 198         return 0;
 199 }
 200
 201 /*
 202  * Register a new field for this report.
 203  */
 204
 205 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
 206 {
 207         struct hid_report *report;
 208         struct hid_field *field;
 209         int usages;
 210         unsigned offset;
 211         int i;
 212
 213         if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
 214                 dbg("hid_register_report failed");
 215                 return -1;
 216         }
 217
 218         if (parser->global.logical_maximum < parser->global.logical_minimum) {
 219                 dbg("logical range invalid %d %d", parser->global.logical_minimum, parser->global.logical_maximum);
 220                 return -1;
 221         }
 222         usages = parser->local.usage_index;
 223
 224         offset = report->size;
 225         report->size += parser->global.report_size * parser->global.report_count;
 226
 227         if (usages < parser->global.report_count)
 228                 usages = parser->global.report_count;
 229
 230         if (usages == 0)
 231                 return 0; /* ignore padding fields */
 232
 233         if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
 234                 return 0;
 235
 236         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
 237         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
 238         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
 239
 240         for (i = 0; i < usages; i++) {
 241                 int j = i;
 242                 /* Duplicate the last usage we parsed if we have excess values */
 243                 if (i >= parser->local.usage_index)
 244                         j = parser->local.usage_index - 1;
 245                 field->usage[i].hid = parser->local.usage[j];
 246                 field->usage[i].collection_index =
 247                         parser->local.collection_index[j];
 248         }
 249
 250         field->maxusage = usages;
 251         field->flags = flags;
 252         field->report_offset = offset;
 253         field->report_type = report_type;
 254         field->report_size = parser->global.report_size;
 255         field->report_count = parser->global.report_count;
 256         field->logical_minimum = parser->global.logical_minimum;
 257         field->logical_maximum = parser->global.logical_maximum;
 258         field->physical_minimum = parser->global.physical_minimum;
 259         field->physical_maximum = parser->global.physical_maximum;
 260         field->unit_exponent = parser->global.unit_exponent;
 261         field->unit = parser->global.unit;
 262
 263         return 0;
 264 }
 265
 266 /*
 267  * Read data value from item.
 268  */
 269
 270 static __inline__ __u32 item_udata(struct hid_item *item)
 271 {
 272         switch (item->size) {
 273                 case 1: return item->data.u8;
 274                 case 2: return item->data.u16;
 275                 case 4: return item->data.u32;
 276         }
 277         return 0;
 278 }
 279
 280 static __inline__ __s32 item_sdata(struct hid_item *item)
 281 {
 282         switch (item->size) {
 283                 case 1: return item->data.s8;
 284                 case 2: return item->data.s16;
 285                 case 4: return item->data.s32;
 286         }
 287         return 0;
 288 }
 289
 290 /*
 291  * Process a global item.
 292  */
 293
 294 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
 295 {
 296         switch (item->tag) {
 297
 298                 case HID_GLOBAL_ITEM_TAG_PUSH:
 299
 300                         if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
 301                                 dbg("global enviroment stack overflow");
 302                                 return -1;
 303                         }
 304
 305                         memcpy(parser->global_stack + parser->global_stack_ptr++,
 306                                 &parser->global, sizeof(struct hid_global));
 307                         return 0;
 308
 309                 case HID_GLOBAL_ITEM_TAG_POP:
 310
 311                         if (!parser->global_stack_ptr) {
 312                                 dbg("global enviroment stack underflow");
 313                                 return -1;
 314                         }
 315
 316                         memcpy(&parser->global, parser->global_stack + --parser->global_stack_ptr,
 317                                 sizeof(struct hid_global));
 318                         return 0;
 319
 320                 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
 321                         parser->global.usage_page = item_udata(item);
 322                         return 0;
 323
 324                 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
 325                         parser->global.logical_minimum = item_sdata(item);
 326                         return 0;
 327
 328                 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
 329                         if (parser->global.logical_minimum < 0)
 330                                 parser->global.logical_maximum = item_sdata(item);
 331                         else
 332                                 parser->global.logical_maximum = item_udata(item);
 333                         return 0;
 334
 335                 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
 336                         parser->global.physical_minimum = item_sdata(item);
 337                         return 0;
 338
 339                 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
 340                         if (parser->global.physical_minimum < 0)
 341                                 parser->global.physical_maximum = item_sdata(item);
 342                         else
 343                                 parser->global.physical_maximum = item_udata(item);
 344                         return 0;
 345
 346                 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
 347                         parser->global.unit_exponent = item_sdata(item);
 348                         return 0;
 349
 350                 case HID_GLOBAL_ITEM_TAG_UNIT:
 351                         parser->global.unit = item_udata(item);
 352                         return 0;
 353
 354                 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
 355                         if ((parser->global.report_size = item_udata(item)) > 32) {
 356                                 dbg("invalid report_size %d", parser->global.report_size);
 357                                 return -1;
 358                         }
 359                         return 0;
 360
 361                 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
 362                         if ((parser->global.report_count = item_udata(item)) > HID_MAX_USAGES) {
 363                                 dbg("invalid report_count %d", parser->global.report_count);
 364                                 return -1;
 365                         }
 366                         return 0;
 367
 368                 case HID_GLOBAL_ITEM_TAG_REPORT_ID:
 369                         if ((parser->global.report_id = item_udata(item)) == 0) {
 370                                 dbg("report_id 0 is invalid");
 371                                 return -1;
 372                         }
 373                         return 0;
 374
 375                 default:
 376                         dbg("unknown global tag 0x%x", item->tag);
 377                         return -1;
 378         }
 379 }
 380
 381 /*
 382  * Process a local item.
 383  */
 384
 385 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 386 {
 387         __u32 data;
 388         unsigned n;
 389
 390         if (item->size == 0) {
 391                 dbg("item data expected for local item");
 392                 return -1;
 393         }
 394
 395         data = item_udata(item);
 396
 397         switch (item->tag) {
 398
 399                 case HID_LOCAL_ITEM_TAG_DELIMITER:
 400
 401                         if (data) {
 402                                 /*
 403                                  * We treat items before the first delimiter
 404                                  * as global to all usage sets (branch 0).
 405                                  * In the moment we process only these global
 406                                  * items and the first delimiter set.
 407                                  */
 408                                 if (parser->local.delimiter_depth != 0) {
 409                                         dbg("nested delimiters");
 410                                         return -1;
 411                                 }
 412                                 parser->local.delimiter_depth++;
 413                                 parser->local.delimiter_branch++;
 414                         } else {
 415                                 if (parser->local.delimiter_depth < 1) {
 416                                         dbg("bogus close delimiter");
 417                                         return -1;
 418                                 }
 419                                 parser->local.delimiter_depth--;
 420                         }
 421                         return 1;
 422
 423                 case HID_LOCAL_ITEM_TAG_USAGE:
 424
 425                         if (parser->local.delimiter_branch > 1) {
 426                                 dbg("alternative usage ignored");
 427                                 return 0;
 428                         }
 429
 430                         if (item->size <= 2)
 431                                 data = (parser->global.usage_page << 16) + data;
 432
 433                         return hid_add_usage(parser, data);
 434
 435                 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 436
 437                         if (parser->local.delimiter_branch > 1) {
 438                                 dbg("alternative usage ignored");
 439                                 return 0;
 440                         }
 441
 442                         if (item->size <= 2)
 443                                 data = (parser->global.usage_page << 16) + data;
 444
 445                         parser->local.usage_minimum = data;
 446                         return 0;
 447
 448                 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 449
 450                         if (parser->local.delimiter_branch > 1) {
 451                                 dbg("alternative usage ignored");
 452                                 return 0;
 453                         }
 454
 455                         if (item->size <= 2)
 456                                 data = (parser->global.usage_page << 16) + data;
 457
 458                         for (n = parser->local.usage_minimum; n <= data; n++)
 459                                 if (hid_add_usage(parser, n)) {
 460                                         dbg("hid_add_usage failed\n");
 461                                         return -1;
 462                                 }
 463                         return 0;
 464
 465                 default:
 466
 467                         dbg("unknown local item tag 0x%x", item->tag);
 468                         return 0;
 469         }
 470         return 0;
 471 }
 472
 473 /*
 474  * Process a main item.
 475  */
 476
 477 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
 478 {
 479         __u32 data;
 480         int ret;
 481
 482         data = item_udata(item);
 483
 484         switch (item->tag) {
 485                 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 486                         ret = open_collection(parser, data & 0xff);
 487                         break;
 488                 case HID_MAIN_ITEM_TAG_END_COLLECTION:
 489                         ret = close_collection(parser);
 490                         break;
 491                 case HID_MAIN_ITEM_TAG_INPUT:
 492                         ret = hid_add_field(parser, HID_INPUT_REPORT, data);
 493                         break;
 494                 case HID_MAIN_ITEM_TAG_OUTPUT:
 495                         ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
 496                         break;
 497                 case HID_MAIN_ITEM_TAG_FEATURE:
 498                         ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
 499                         break;
 500                 default:
 501                         dbg("unknown main item tag 0x%x", item->tag);
 502                         ret = 0;
 503         }
 504
 505         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
 506
 507         return ret;
 508 }
 509
 510 /*
 511  * Process a reserved item.
 512  */
 513
 514 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
 515 {
 516         dbg("reserved item type, tag 0x%x", item->tag);
 517         return 0;
 518 }
 519
 520 /*
 521  * Free a report and all registered fields. The field->usage and
 522  * field->value table's are allocated behind the field, so we need
 523  * only to free(field) itself.
 524  */
 525
 526 static void hid_free_report(struct hid_report *report)
 527 {
 528         unsigned n;
 529
 530         for (n = 0; n < report->maxfield; n++)
 531                 kfree(report->field[n]);
 532         kfree(report);
 533 }
 534
 535 /*
 536  * Free a device structure, all reports, and all fields.
 537  */
 538
 539 static void hid_free_device(struct hid_device *device)
 540 {
 541         unsigned i,j;
 542
 543         hid_ff_exit(device);
 544
 545         for (i = 0; i < HID_REPORT_TYPES; i++) {
 546                 struct hid_report_enum *report_enum = device->report_enum + i;
 547
 548                 for (j = 0; j < 256; j++) {
 549                         struct hid_report *report = report_enum->report_id_hash[j];
 550                         if (report)
 551                                 hid_free_report(report);
 552                 }
 553         }
 554
 555         if (device->rdesc)
 556                 kfree(device->rdesc);
 557         kfree(device);
 558 }
 559
 560 /*
 561  * Fetch a report description item from the data stream. We support long
 562  * items, though they are not used yet.
 563  */
 564
 565 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
 566 {
 567         u8 b;
 568
 569         if ((end - start) <= 0)
 570                 return NULL;
 571
 572         b = *start++;
 573
 574         item->type = (b >> 2) & 3;
 575         item->tag  = (b >> 4) & 15;
 576
 577         if (item->tag == HID_ITEM_TAG_LONG) {
 578
 579                 item->format = HID_ITEM_FORMAT_LONG;
 580
 581                 if ((end - start) < 2)
 582                         return NULL;
 583
 584                 item->size = *start++;
 585                 item->tag  = *start++;
 586
 587                 if ((end - start) < item->size)
 588                         return NULL;
 589
 590                 item->data.longdata = start;
 591                 start += item->size;
 592                 return start;
 593         }
 594
 595         item->format = HID_ITEM_FORMAT_SHORT;
 596         item->size = b & 3;
 597
 598         switch (item->size) {
 599
 600                 case 0:
 601                         return start;
 602
 603                 case 1:
 604                         if ((end - start) < 1)
 605                                 return NULL;
 606                         item->data.u8 = *start++;
 607                         return start;
 608
 609                 case 2:
 610                         if ((end - start) < 2)
 611                                 return NULL;
 612                         item->data.u16 = le16_to_cpu(get_unaligned((__u16*)start));
 613                         start = (__u8 *)((__u16 *)start + 1);
 614                         return start;
 615
 616                 case 3:
 617                         item->size++;
 618                         if ((end - start) < 4)
 619                                 return NULL;
 620                         item->data.u32 = le32_to_cpu(get_unaligned((__u32*)start));
 621                         start = (__u8 *)((__u32 *)start + 1);
 622                         return start;
 623         }
 624
 625         return NULL;
 626 }
 627
 628 /*
 629  * Parse a report description into a hid_device structure. Reports are
 630  * enumerated, fields are attached to these reports.
 631  */
 632
 633 static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
 634 {
 635         struct hid_device *device;
 636         struct hid_parser *parser;
 637         struct hid_item item;
 638         __u8 *end;
 639         unsigned i;
 640         static int (*dispatch_type[])(struct hid_parser *parser,
 641                                       struct hid_item *item) = {
 642                 hid_parser_main,
 643                 hid_parser_global,
 644                 hid_parser_local,
 645                 hid_parser_reserved
 646         };
 647
 648         if (!(device = kmalloc(sizeof(struct hid_device), GFP_KERNEL)))
 649                 return NULL;
 650         memset(device, 0, sizeof(struct hid_device));
 651
 652         if (!(device->collection =kmalloc(sizeof(struct hid_collection) *
 653                                    HID_DEFAULT_NUM_COLLECTIONS, GFP_KERNEL))) {
 654                 kfree(device);
 655                 return NULL;
 656         }
 657         memset(device->collection, 0, sizeof(struct hid_collection) *
 658                HID_DEFAULT_NUM_COLLECTIONS);
 659         device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
 660
 661         for (i = 0; i < HID_REPORT_TYPES; i++)
 662                 INIT_LIST_HEAD(&device->report_enum[i].report_list);
 663
 664         if (!(device->rdesc = (__u8 *)kmalloc(size, GFP_KERNEL))) {
 665                 kfree(device->collection);
 666                 kfree(device);
 667                 return NULL;
 668         }
 669         memcpy(device->rdesc, start, size);
 670         device->rsize = size;
 671
 672         if (!(parser = kmalloc(sizeof(struct hid_parser), GFP_KERNEL))) {
 673                 kfree(device->rdesc);
 674                 kfree(device->collection);
 675                 kfree(device);
 676                 return NULL;
 677         }
 678         memset(parser, 0, sizeof(struct hid_parser));
 679         parser->device = device;
 680
 681         end = start + size;
 682         while ((start = fetch_item(start, end, &item)) != 0) {
 683
 684                 if (item.format != HID_ITEM_FORMAT_SHORT) {
 685                         dbg("unexpected long global item");
 686                         kfree(device->collection);
 687                         hid_free_device(device);
 688                         kfree(parser);
 689                         return NULL;
 690                 }
 691
 692                 if (dispatch_type[item.type](parser, &item)) {
 693                         dbg("item %u %u %u %u parsing failed\n",
 694                                 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
 695                         kfree(device->collection);
 696                         hid_free_device(device);
 697                         kfree(parser);
 698                         return NULL;
 699                 }
 700
 701                 if (start == end) {
 702                         if (parser->collection_stack_ptr) {
 703                                 dbg("unbalanced collection at end of report description");
 704                                 kfree(device->collection);
 705                                 hid_free_device(device);
 706                                 kfree(parser);
 707                                 return NULL;
 708                         }
 709                         if (parser->local.delimiter_depth) {
 710                                 dbg("unbalanced delimiter at end of report description");
 711                                 kfree(device->collection);
 712                                 hid_free_device(device);
 713                                 kfree(parser);
 714                                 return NULL;
 715                         }
 716                         kfree(parser);
 717                         return device;
 718                 }
 719         }
 720
 721         dbg("item fetching failed at offset %d\n", (int)(end - start));
 722         kfree(device->collection);
 723         hid_free_device(device);
 724         kfree(parser);
 725         return NULL;
 726 }
 727
 728 /*
 729  * Convert a signed n-bit integer to signed 32-bit integer. Common
 730  * cases are done through the compiler, the screwed things has to be
 731  * done by hand.
 732  */
 733
 734 static __inline__ __s32 snto32(__u32 value, unsigned n)
 735 {
 736         switch (n) {
 737                 case 8:  return ((__s8)value);
 738                 case 16: return ((__s16)value);
 739                 case 32: return ((__s32)value);
 740         }
 741         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
 742 }
 743
 744 /*
 745  * Convert a signed 32-bit integer to a signed n-bit integer.
 746  */
 747
 748 static __inline__ __u32 s32ton(__s32 value, unsigned n)
 749 {
 750         __s32 a = value >> (n - 1);
 751         if (a && a != -1)
 752                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
 753         return value & ((1 << n) - 1);
 754 }
 755
 756 /*
 757  * Extract/implement a data field from/to a report.
 758  */
 759
 760 static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
 761 {
 762         report += (offset >> 5) << 2; offset &= 31;
 763         return (le64_to_cpu(get_unaligned((__u64*)report)) >> offset) & ((1 << n) - 1);
 764 }
 765
 766 static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
 767 {
 768         report += (offset >> 5) << 2; offset &= 31;
 769         put_unaligned((get_unaligned((__u64*)report)
 770                 & cpu_to_le64(~((((__u64) 1 << n) - 1) << offset)))
 771                 | cpu_to_le64((__u64)value << offset), (__u64*)report);
 772 }
 773
 774 /*
 775  * Search an array for a value.
 776  */
 777
 778 static __inline__ int search(__s32 *array, __s32 value, unsigned n)
 779 {
 780         while (n--) {
 781                 if (*array++ == value)
 782                         return 0;
 783         }
 784         return -1;
 785 }
 786
 787 static void hid_process_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs)
 788 {
 789         hid_dump_input(usage, value);
 790         if (hid->claimed & HID_CLAIMED_INPUT)
 791                 hidinput_hid_event(hid, field, usage, value, regs);
 792         if (hid->claimed & HID_CLAIMED_HIDDEV)
 793                 hiddev_hid_event(hid, field, usage, value, regs);
 794 }
 795
 796 /*
 797  * Analyse a received field, and fetch the data from it. The field
 798  * content is stored for next report processing (we do differential
 799  * reporting to the layer).
 800  */
 801
 802 static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, struct pt_regs *regs)
 803 {
 804         unsigned n;
 805         unsigned count = field->report_count;
 806         unsigned offset = field->report_offset;
 807         unsigned size = field->report_size;
 808         __s32 min = field->logical_minimum;
 809         __s32 max = field->logical_maximum;
 810         __s32 *value;
 811
 812         value = kmalloc(sizeof(__s32)*count, GFP_ATOMIC);
 813         if (!value)
 814                 return;
 815
 816         for (n = 0; n < count; n++) {
 817
 818                         value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
 819                                                     extract(data, offset + n * size, size);
 820
 821                         if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
 822                             && value[n] >= min && value[n] <= max
 823                             && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
 824                                 goto exit;
 825         }
 826
 827         for (n = 0; n < count; n++) {
 828
 829                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
 830
 831                         if (field->flags & HID_MAIN_ITEM_RELATIVE) {
 832                                 if (!value[n])
 833                                         continue;
 834                         } else {
 835                                 if (value[n] == field->value[n])
 836                                         continue;
 837                         }
 838                         hid_process_event(hid, field, &field->usage[n], value[n], regs);
 839                         continue;
 840                 }
 841
 842                 if (field->value[n] >= min && field->value[n] <= max
 843                         && field->usage[field->value[n] - min].hid
 844                         && search(value, field->value[n], count))
 845                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, regs);
 846
 847                 if (value[n] >= min && value[n] <= max
 848                         && field->usage[value[n] - min].hid
 849                         && search(field->value, value[n], count))
 850                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, regs);
 851         }
 852
 853         memcpy(field->value, value, count * sizeof(__s32));
 854 exit:
 855         kfree(value);
 856 }
 857
 858 static int hid_input_report(int type, struct urb *urb, struct pt_regs *regs)
 859 {
 860         struct hid_device *hid = urb->context;
 861         struct hid_report_enum *report_enum = hid->report_enum + type;
 862         u8 *data = urb->transfer_buffer;
 863         int len = urb->actual_length;
 864         struct hid_report *report;
 865         int n, size;
 866
 867         if (!len) {
 868                 dbg("empty report");
 869                 return -1;
 870         }
 871
 872 #ifdef DEBUG_DATA
 873         printk(KERN_DEBUG __FILE__ ": report (size %u) (%snumbered)\n", len, report_enum->numbered ? "" : "un");
 874 #endif
 875
 876         n = 0;                          /* Normally report number is 0 */
 877         if (report_enum->numbered) {    /* Device uses numbered reports, data[0] is report number */
 878                 n = *data++;
 879                 len--;
 880         }
 881
 882 #ifdef DEBUG_DATA
 883         {
 884                 int i;
 885                 printk(KERN_DEBUG __FILE__ ": report %d (size %u) = ", n, len);
 886                 for (i = 0; i < len; i++)
 887                         printk(" %02x", data[i]);
 888                 printk("\n");
 889         }
 890 #endif
 891
 892         if (!(report = report_enum->report_id_hash[n])) {
 893                 dbg("undefined report_id %d received", n);
 894                 return -1;
 895         }
 896
 897         size = ((report->size - 1) >> 3) + 1;
 898
 899         if (len < size) {
 900                 dbg("report %d is too short, (%d < %d)", report->id, len, size);
 901                 return -1;
 902         }
 903
 904         if (hid->claimed & HID_CLAIMED_HIDDEV)
 905                 hiddev_report_event(hid, report);
 906
 907         for (n = 0; n < report->maxfield; n++)
 908                 hid_input_field(hid, report->field[n], data, regs);
 909
 910         if (hid->claimed & HID_CLAIMED_INPUT)
 911                 hidinput_report_event(hid, report);
 912
 913         return 0;
 914 }
 915
 916 /*
 917  * Input interrupt completion handler.
 918  */
 919
 920 static void hid_irq_in(struct urb *urb, struct pt_regs *regs)
 921 {
 922         struct hid_device       *hid = urb->context;
 923         int                     status;
 924
 925         switch (urb->status) {
 926         case 0:                 /* success */
 927                 hid_input_report(HID_INPUT_REPORT, urb, regs);
 928                 break;
 929         case -ECONNRESET:       /* unlink */
 930         case -ENOENT:
 931         case -ESHUTDOWN:
 932                 return;
 933         default:                /* error */
 934                 dbg("nonzero status in input irq %d", urb->status);
 935         }
 936
 937         status = usb_submit_urb (urb, SLAB_ATOMIC);
 938         if (status)
 939                 err ("can't resubmit intr, %s-%s/input%d, status %d",
 940                                 hid->dev->bus->bus_name, hid->dev->devpath,
 941                                 hid->ifnum, status);
 942 }
 943
 944 /*
 945  * Output the field into the report.
 946  */
 947
 948 static void hid_output_field(struct hid_field *field, __u8 *data)
 949 {
 950         unsigned count = field->report_count;
 951         unsigned offset = field->report_offset;
 952         unsigned size = field->report_size;
 953         unsigned n;
 954
 955         for (n = 0; n < count; n++) {
 956                 if (field->logical_minimum < 0) /* signed values */
 957                         implement(data, offset + n * size, size, s32ton(field->value[n], size));
 958                  else                           /* unsigned values */
 959                         implement(data, offset + n * size, size, field->value[n]);
 960         }
 961 }
 962
 963 /*
 964  * Create a report.
 965  */
 966
 967 static void hid_output_report(struct hid_report *report, __u8 *data)
 968 {
 969         unsigned n;
 970
 971         if (report->id > 0)
 972                 *data++ = report->id;
 973
 974         for (n = 0; n < report->maxfield; n++)
 975                 hid_output_field(report->field[n], data);
 976 }
 977
 978 /*
 979  * Set a field value. The report this field belongs to has to be
 980  * created and transferred to the device, to set this value in the
 981  * device.
 982  */
 983
 984 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
 985 {
 986         unsigned size = field->report_size;
 987
 988         hid_dump_input(field->usage + offset, value);
 989
 990         if (offset >= field->report_count) {
 991                 dbg("offset (%d) exceeds report_count (%d)", offset, field->report_count);
 992                 hid_dump_field(field, 8);
 993                 return -1;
 994         }
 995         if (field->logical_minimum < 0) {
 996                 if (value != snto32(s32ton(value, size), size)) {
 997                         dbg("value %d is out of range", value);
 998                         return -1;
 999                 }
1000         }
1001         field->value[offset] = value;
1002         return 0;
1003 }
1004
1005 int hid_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1006 {
1007         struct hid_report_enum *report_enum = hid->report_enum + HID_OUTPUT_REPORT;
1008         struct list_head *list = report_enum->report_list.next;
1009         int i, j;
1010
1011         while (list != &report_enum->report_list) {
1012                 struct hid_report *report = (struct hid_report *) list;
1013                 list = list->next;
1014                 for (i = 0; i < report->maxfield; i++) {
1015                         *field = report->field[i];
1016                         for (j = 0; j < (*field)->maxusage; j++)
1017                                 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1018                                         return j;
1019                 }
1020         }
1021         return -1;
1022 }
1023
1024 /*
1025  * Find a report with a specified HID usage.
1026  */
1027
1028 int hid_find_report_by_usage(struct hid_device *hid, __u32 wanted_usage, struct hid_report **report, int type)
1029 {
1030         struct hid_report_enum *report_enum = hid->report_enum + type;
1031         struct list_head *list = report_enum->report_list.next;
1032         int i, j;
1033
1034         while (list != &report_enum->report_list) {
1035                 *report = (struct hid_report *) list;
1036                 list = list->next;
1037                 for (i = 0; i < (*report)->maxfield; i++) {
1038                         struct hid_field *field = (*report)->field[i];
1039                         for (j = 0; j < field->maxusage; j++)
1040                                 if (field->logical == wanted_usage)
1041                                         return j;
1042                 }
1043         }
1044         return -1;
1045 }
1046
1047 #if 0
1048 static int hid_find_field_in_report(struct hid_report *report, __u32 wanted_usage, struct hid_field **field)
1049 {
1050         int i, j;
1051
1052         for (i = 0; i < report->maxfield; i++) {
1053                 *field = report->field[i];
1054                 for (j = 0; j < (*field)->maxusage; j++)
1055                         if ((*field)->usage[j].hid == wanted_usage)
1056                                 return j;
1057         }
1058
1059         return -1;
1060 }
1061 #endif
1062
1063 static int hid_submit_out(struct hid_device *hid)
1064 {
1065         struct hid_report *report;
1066
1067         report = hid->out[hid->outtail];
1068
1069         hid_output_report(report, hid->outbuf);
1070         hid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1071         hid->urbout->dev = hid->dev;
1072
1073         dbg("submitting out urb");
1074
1075         if (usb_submit_urb(hid->urbout, GFP_ATOMIC)) {
1076                 err("usb_submit_urb(out) failed");
1077                 return -1;
1078         }
1079
1080         return 0;
1081 }
1082
1083 static int hid_submit_ctrl(struct hid_device *hid)
1084 {
1085         struct hid_report *report;
1086         unsigned char dir;
1087         int len;
1088
1089         report = hid->ctrl[hid->ctrltail].report;
1090         dir = hid->ctrl[hid->ctrltail].dir;
1091
1092         len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1093         if (dir == USB_DIR_OUT) {
1094                 hid_output_report(report, hid->ctrlbuf);
1095                 hid->urbctrl->pipe = usb_sndctrlpipe(hid->dev, 0);
1096                 hid->urbctrl->transfer_buffer_length = len;
1097         } else {
1098                 int maxpacket, padlen;
1099
1100                 hid->urbctrl->pipe = usb_rcvctrlpipe(hid->dev, 0);
1101                 maxpacket = usb_maxpacket(hid->dev, hid->urbctrl->pipe, 0);
1102                 if (maxpacket > 0) {
1103                         padlen = (len + maxpacket - 1) / maxpacket;
1104                         padlen *= maxpacket;
1105                         if (padlen > HID_BUFFER_SIZE)
1106                                 padlen = HID_BUFFER_SIZE;
1107                 } else
1108                         padlen = 0;
1109                 hid->urbctrl->transfer_buffer_length = padlen;
1110         }
1111         hid->urbctrl->dev = hid->dev;
1112
1113         hid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
1114         hid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
1115         hid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
1116         hid->cr->wIndex = cpu_to_le16(hid->ifnum);
1117         hid->cr->wLength = cpu_to_le16(len);
1118
1119         dbg("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u",
1120             hid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
1121             hid->cr->wValue, hid->cr->wIndex, hid->cr->wLength);
1122
1123         if (usb_submit_urb(hid->urbctrl, GFP_ATOMIC)) {
1124                 err("usb_submit_urb(ctrl) failed");
1125                 return -1;
1126         }
1127
1128         return 0;
1129 }
1130
1131 /*
1132  * Output interrupt completion handler.
1133  */
1134
1135 static void hid_irq_out(struct urb *urb, struct pt_regs *regs)
1136 {
1137         struct hid_device *hid = urb->context;
1138         unsigned long flags;
1139
1140         if (urb->status)
1141                 warn("output irq status %d received", urb->status);
1142
1143         spin_lock_irqsave(&hid->outlock, flags);
1144
1145         hid->outtail = (hid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
1146
1147         if (hid->outhead != hid->outtail) {
1148                 hid_submit_out(hid);
1149                 spin_unlock_irqrestore(&hid->outlock, flags);
1150                 return;
1151         }
1152
1153         clear_bit(HID_OUT_RUNNING, &hid->iofl);
1154
1155         spin_unlock_irqrestore(&hid->outlock, flags);
1156
1157         wake_up(&hid->wait);
1158 }
1159
1160 /*
1161  * Control pipe completion handler.
1162  */
1163
1164 static void hid_ctrl(struct urb *urb, struct pt_regs *regs)
1165 {
1166         struct hid_device *hid = urb->context;
1167         unsigned long flags;
1168
1169         if (urb->status)
1170                 warn("ctrl urb status %d received", urb->status);
1171
1172         spin_lock_irqsave(&hid->ctrllock, flags);
1173
1174         if (hid->ctrl[hid->ctrltail].dir == USB_DIR_IN)
1175                 hid_input_report(hid->ctrl[hid->ctrltail].report->type, urb, regs);
1176
1177         hid->ctrltail = (hid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
1178
1179         if (hid->ctrlhead != hid->ctrltail) {
1180                 hid_submit_ctrl(hid);
1181                 spin_unlock_irqrestore(&hid->ctrllock, flags);
1182                 return;
1183         }
1184
1185         clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1186
1187         spin_unlock_irqrestore(&hid->ctrllock, flags);
1188
1189         wake_up(&hid->wait);
1190 }
1191
1192 void hid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
1193 {
1194         int head;
1195         unsigned long flags;
1196
1197         if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
1198                 return;
1199
1200         if (hid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
1201
1202                 spin_lock_irqsave(&hid->outlock, flags);
1203
1204                 if ((head = (hid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == hid->outtail) {
1205                         spin_unlock_irqrestore(&hid->outlock, flags);
1206                         warn("output queue full");
1207                         return;
1208                 }
1209
1210                 hid->out[hid->outhead] = report;
1211                 hid->outhead = head;
1212
1213                 if (!test_and_set_bit(HID_OUT_RUNNING, &hid->iofl))
1214                         hid_submit_out(hid);
1215
1216                 spin_unlock_irqrestore(&hid->outlock, flags);
1217                 return;
1218         }
1219
1220         spin_lock_irqsave(&hid->ctrllock, flags);
1221
1222         if ((head = (hid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == hid->ctrltail) {
1223                 spin_unlock_irqrestore(&hid->ctrllock, flags);
1224                 warn("control queue full");
1225                 return;
1226         }
1227
1228         hid->ctrl[hid->ctrlhead].report = report;
1229         hid->ctrl[hid->ctrlhead].dir = dir;
1230         hid->ctrlhead = head;
1231
1232         if (!test_and_set_bit(HID_CTRL_RUNNING, &hid->iofl))
1233                 hid_submit_ctrl(hid);
1234
1235         spin_unlock_irqrestore(&hid->ctrllock, flags);
1236 }
1237
1238 int hid_wait_io(struct hid_device *hid)
1239 {
1240         DECLARE_WAITQUEUE(wait, current);
1241         int timeout = 10*HZ;
1242
1243         set_current_state(TASK_UNINTERRUPTIBLE);
1244         add_wait_queue(&hid->wait, &wait);
1245
1246         while (timeout && (test_bit(HID_CTRL_RUNNING, &hid->iofl) ||
1247                            test_bit(HID_OUT_RUNNING, &hid->iofl)))
1248                 timeout = schedule_timeout(timeout);
1249
1250         set_current_state(TASK_RUNNING);
1251         remove_wait_queue(&hid->wait, &wait);
1252
1253         if (!timeout) {
1254                 dbg("timeout waiting for ctrl or out queue to clear");
1255                 return -1;
1256         }
1257
1258         return 0;
1259 }
1260
1261 static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
1262                 unsigned char type, void *buf, int size)
1263 {
1264         return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
1265                 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
1266                 (type << 8), ifnum, buf, size, HZ * USB_CTRL_GET_TIMEOUT);
1267 }
1268
1269 int hid_open(struct hid_device *hid)
1270 {
1271         if (hid->open++)
1272                 return 0;
1273
1274         hid->urbin->dev = hid->dev;
1275
1276         if (usb_submit_urb(hid->urbin, GFP_KERNEL))
1277                 return -EIO;
1278
1279         return 0;
1280 }
1281
1282 void hid_close(struct hid_device *hid)
1283 {
1284         if (!--hid->open)
1285                 usb_unlink_urb(hid->urbin);
1286 }
1287
1288 /*
1289  * Initialize all reports
1290  */
1291
1292 void hid_init_reports(struct hid_device *hid)
1293 {
1294         struct hid_report_enum *report_enum;
1295         struct hid_report *report;
1296         struct list_head *list;
1297         int err, ret;
1298
1299         /*
1300          * The Set_Idle request is supposed to affect only the
1301          * "Interrupt In" pipe. Unfortunately, buggy devices such as
1302          * the BTC keyboard (ID 046e:5303) the request also affects
1303          * Get_Report requests on the control pipe.  In the worst
1304          * case, if the device was put on idle for an indefinite
1305          * amount of time (as we do below) and there are no input
1306          * events to report, the Get_Report requests will just hang
1307          * until we get a USB timeout.  To avoid this, we temporarily
1308          * establish a minimal idle time of 1ms.  This shouldn't hurt
1309          * bugfree devices and will cause a worst-case extra delay of
1310          * 1ms for buggy ones.
1311          */
1312         usb_control_msg(hid->dev, usb_sndctrlpipe(hid->dev, 0),
1313                         HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (1 << 8),
1314                         hid->ifnum, NULL, 0, HZ * USB_CTRL_SET_TIMEOUT);
1315
1316         report_enum = hid->report_enum + HID_INPUT_REPORT;
1317         list = report_enum->report_list.next;
1318         while (list != &report_enum->report_list) {
1319                 report = (struct hid_report *) list;
1320                 hid_submit_report(hid, report, USB_DIR_IN);
1321                 list = list->next;
1322         }
1323
1324         report_enum = hid->report_enum + HID_FEATURE_REPORT;
1325         list = report_enum->report_list.next;
1326         while (list != &report_enum->report_list) {
1327                 report = (struct hid_report *) list;
1328                 hid_submit_report(hid, report, USB_DIR_IN);
1329                 list = list->next;
1330         }
1331
1332         err = 0;
1333         ret = hid_wait_io(hid);
1334         while (ret) {
1335                 err |= ret;
1336                 if (test_bit(HID_CTRL_RUNNING, &hid->iofl))
1337                         usb_unlink_urb(hid->urbctrl);
1338                 if (test_bit(HID_OUT_RUNNING, &hid->iofl))
1339                         usb_unlink_urb(hid->urbout);
1340                 ret = hid_wait_io(hid);
1341         }
1342
1343         if (err)
1344                 warn("timeout initializing reports\n");
1345
1346         report_enum = hid->report_enum + HID_INPUT_REPORT;
1347         list = report_enum->report_list.next;
1348         while (list != &report_enum->report_list) {
1349                 report = (struct hid_report *) list;
1350                 usb_control_msg(hid->dev, usb_sndctrlpipe(hid->dev, 0),
1351                         HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, report->id,
1352                         hid->ifnum, NULL, 0, HZ * USB_CTRL_SET_TIMEOUT);
1353                 list = list->next;
1354         }
1355 }
1356
1357 #define USB_VENDOR_ID_WACOM             0x056a
1358 #define USB_DEVICE_ID_WACOM_PENPARTNER  0x0000
1359 #define USB_DEVICE_ID_WACOM_GRAPHIRE    0x0010
1360 #define USB_DEVICE_ID_WACOM_INTUOS      0x0020
1361 #define USB_DEVICE_ID_WACOM_PL          0x0030
1362 #define USB_DEVICE_ID_WACOM_INTUOS2     0x0040
1363 #define USB_DEVICE_ID_WACOM_VOLITO      0x0060
1364 #define USB_DEVICE_ID_WACOM_PTU         0x0003
1365
1366 #define USB_VENDOR_ID_KBGEAR            0x084e
1367 #define USB_DEVICE_ID_KBGEAR_JAMSTUDIO  0x1001
1368
1369 #define USB_VENDOR_ID_AIPTEK            0x08ca
1370 #define USB_DEVICE_ID_AIPTEK_01         0x0001
1371 #define USB_DEVICE_ID_AIPTEK_10         0x0010
1372 #define USB_DEVICE_ID_AIPTEK_20         0x0020
1373 #define USB_DEVICE_ID_AIPTEK_21         0x0021
1374 #define USB_DEVICE_ID_AIPTEK_22         0x0022
1375 #define USB_DEVICE_ID_AIPTEK_23         0x0023
1376 #define USB_DEVICE_ID_AIPTEK_24         0x0024
1377
1378 #define USB_VENDOR_ID_GRIFFIN           0x077d
1379 #define USB_DEVICE_ID_POWERMATE         0x0410
1380 #define USB_DEVICE_ID_SOUNDKNOB         0x04AA
1381
1382 #define USB_VENDOR_ID_ATEN             0x0557
1383 #define USB_DEVICE_ID_ATEN_UC100KM     0x2004
1384 #define USB_DEVICE_ID_ATEN_CS124U      0x2202
1385 #define USB_DEVICE_ID_ATEN_2PORTKVM    0x2204
1386 #define USB_DEVICE_ID_ATEN_4PORTKVM    0x2205
1387 #define USB_DEVICE_ID_ATEN_4PORTKVMC   0x2208
1388
1389 #define USB_VENDOR_ID_TOPMAX           0x0663
1390 #define USB_DEVICE_ID_TOPMAX_COBRAPAD  0x0103
1391
1392 #define USB_VENDOR_ID_HAPP             0x078b
1393 #define USB_DEVICE_ID_UGCI_DRIVING     0x0010
1394 #define USB_DEVICE_ID_UGCI_FLYING      0x0020
1395 #define USB_DEVICE_ID_UGCI_FIGHTING    0x0030
1396
1397 #define USB_VENDOR_ID_MGE              0x0463
1398 #define USB_DEVICE_ID_MGE_UPS          0xffff
1399 #define USB_DEVICE_ID_MGE_UPS1         0x0001
1400
1401 #define USB_VENDOR_ID_ONTRAK            0x0a07
1402 #define USB_DEVICE_ID_ONTRAK_ADU100     0x0064
1403
1404 #define USB_VENDOR_ID_TANGTOP          0x0d3d
1405 #define USB_DEVICE_ID_TANGTOP_USBPS2   0x0001
1406
1407 #define USB_VENDOR_ID_ESSENTIAL_REALITY 0x0d7f
1408 #define USB_DEVICE_ID_ESSENTIAL_REALITY_P5      0x0100
1409
1410 #define USB_VENDOR_ID_A4TECH            0x09DA
1411 #define USB_DEVICE_ID_A4TECH_WCP32PU    0x0006
1412
1413 #define USB_VENDOR_ID_CYPRESS           0x04b4
1414 #define USB_DEVICE_ID_CYPRESS_MOUSE     0x0001
1415
1416 #define USB_VENDOR_ID_BERKSHIRE         0x0c98
1417 #define USB_DEVICE_ID_BERKSHIRE_PCWD    0x1140
1418
1419 #define USB_VENDOR_ID_ALPS              0x0433
1420 #define USB_DEVICE_ID_IBM_GAMEPAD       0x1101
1421
1422 #define USB_VENDOR_ID_SAITEK            0x06a3
1423 #define USB_DEVICE_ID_SAITEK_RUMBLEPAD  0xff17
1424
1425 #define USB_VENDOR_ID_NEC               0x073e
1426 #define USB_DEVICE_ID_NEC_USB_GAME_PAD  0x0301
1427
1428 #define USB_VENDOR_ID_CHIC              0x05fe
1429 #define USB_DEVICE_ID_CHIC_GAMEPAD      0x0014
1430
1431 #define USB_VENDOR_ID_GLAB              0x06c2
1432 #define USB_DEVICE_ID_4_PHIDGETSERVO_30 0x0038
1433 #define USB_DEVICE_ID_1_PHIDGETSERVO_30 0x0039
1434 #define USB_DEVICE_ID_8_8_8_IF_KIT      0x0045
1435 #define USB_DEVICE_ID_0_0_4_IF_KIT      0x0040
1436 #define USB_DEVICE_ID_0_8_8_IF_KIT      0x0053
1437
1438 #define USB_VENDOR_ID_WISEGROUP         0x0925
1439 #define USB_DEVICE_ID_1_PHIDGETSERVO_20 0x8101
1440 #define USB_DEVICE_ID_4_PHIDGETSERVO_20 0x8104
1441
1442 static struct hid_blacklist {
1443         __u16 idVendor;
1444         __u16 idProduct;
1445         unsigned quirks;
1446 } hid_blacklist[] = {
1447
1448         { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01, HID_QUIRK_IGNORE },
1449         { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10, HID_QUIRK_IGNORE },
1450         { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20, HID_QUIRK_IGNORE },
1451         { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21, HID_QUIRK_IGNORE },
1452         { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22, HID_QUIRK_IGNORE },
1453         { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23, HID_QUIRK_IGNORE },
1454         { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24, HID_QUIRK_IGNORE },
1455         { USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD, HID_QUIRK_IGNORE },
1456         { USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5, HID_QUIRK_IGNORE },
1457         { USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO, HID_QUIRK_IGNORE },
1458         { USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE, HID_QUIRK_IGNORE },
1459         { USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB, HID_QUIRK_IGNORE },
1460         { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_IGNORE },
1461         { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1, HID_QUIRK_IGNORE },
1462
1463         { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100, HID_QUIRK_IGNORE },
1464         { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100, HID_QUIRK_IGNORE },
1465         { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200, HID_QUIRK_IGNORE },
1466         { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300, HID_QUIRK_IGNORE },
1467         { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400, HID_QUIRK_IGNORE },
1468         { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500, HID_QUIRK_IGNORE },
1469
1470         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PENPARTNER, HID_QUIRK_IGNORE },
1471         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE, HID_QUIRK_IGNORE },
1472         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 1, HID_QUIRK_IGNORE },
1473         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 2, HID_QUIRK_IGNORE },
1474         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 3, HID_QUIRK_IGNORE },
1475         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 4, HID_QUIRK_IGNORE },
1476         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS, HID_QUIRK_IGNORE },
1477         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 1, HID_QUIRK_IGNORE },
1478         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 2, HID_QUIRK_IGNORE },
1479         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 3, HID_QUIRK_IGNORE },
1480         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 4, HID_QUIRK_IGNORE },
1481         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL, HID_QUIRK_IGNORE },
1482         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 1, HID_QUIRK_IGNORE },
1483         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 2, HID_QUIRK_IGNORE },
1484         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 3, HID_QUIRK_IGNORE },
1485         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 4, HID_QUIRK_IGNORE },
1486         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 5, HID_QUIRK_IGNORE },
1487         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 1, HID_QUIRK_IGNORE },
1488         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 2, HID_QUIRK_IGNORE },
1489         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 3, HID_QUIRK_IGNORE },
1490         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 4, HID_QUIRK_IGNORE },
1491         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 5, HID_QUIRK_IGNORE },
1492         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 7, HID_QUIRK_IGNORE },
1493         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO, HID_QUIRK_IGNORE },
1494         { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PTU, HID_QUIRK_IGNORE },
1495
1496         { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1497         { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1498         { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT, HID_QUIRK_IGNORE },
1499         { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT, HID_QUIRK_IGNORE },
1500         { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT, HID_QUIRK_IGNORE },
1501
1502         { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1503         { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1504
1505         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
1506         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
1507         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
1508         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
1509         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
1510         { USB_VENDOR_ID_TANGTOP, USB_DEVICE_ID_TANGTOP_USBPS2, HID_QUIRK_NOGET },
1511
1512         { USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU, HID_QUIRK_2WHEEL_MOUSE_HACK_BACK },
1513         { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE, HID_QUIRK_2WHEEL_MOUSE_HACK_EXTRA },
1514
1515         { USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
1516         { USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD },
1517         { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1518         { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1519         { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1520         { USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD },
1521         { USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
1522         { USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
1523
1524         { 0, 0 }
1525 };
1526
1527 static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
1528 {
1529         if (!(hid->inbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->inbuf_dma)))
1530                 return -1;
1531         if (!(hid->outbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->outbuf_dma)))
1532                 return -1;
1533         if (!(hid->cr = usb_buffer_alloc(dev, sizeof(*(hid->cr)), SLAB_ATOMIC, &hid->cr_dma)))
1534                 return -1;
1535         if (!(hid->ctrlbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->ctrlbuf_dma)))
1536                 return -1;
1537
1538         return 0;
1539 }
1540
1541 static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
1542 {
1543         if (hid->inbuf)
1544                 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->inbuf, hid->inbuf_dma);
1545         if (hid->outbuf)
1546                 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->outbuf, hid->outbuf_dma);
1547         if (hid->cr)
1548                 usb_buffer_free(dev, sizeof(*(hid->cr)), hid->cr, hid->cr_dma);
1549         if (hid->ctrlbuf)
1550                 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->ctrlbuf, hid->ctrlbuf_dma);
1551 }
1552
1553 static struct hid_device *usb_hid_configure(struct usb_interface *intf)
1554 {
1555         struct usb_host_interface *interface = intf->cur_altsetting;
1556         struct usb_device *dev = interface_to_usbdev (intf);
1557         struct hid_descriptor *hdesc;
1558         struct hid_device *hid;
1559         unsigned quirks = 0, rsize = 0;
1560         char *buf, *rdesc;
1561         int n;
1562
1563         for (n = 0; hid_blacklist[n].idVendor; n++)
1564                 if ((hid_blacklist[n].idVendor == dev->descriptor.idVendor) &&
1565                         (hid_blacklist[n].idProduct == dev->descriptor.idProduct))
1566                                 quirks = hid_blacklist[n].quirks;
1567
1568         if (quirks & HID_QUIRK_IGNORE)
1569                 return NULL;
1570
1571         if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && ((!interface->desc.bNumEndpoints) ||
1572                 usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
1573                         dbg("class descriptor not present\n");
1574                         return NULL;
1575         }
1576
1577         for (n = 0; n < hdesc->bNumDescriptors; n++)
1578                 if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
1579                         rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
1580
1581         if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
1582                 dbg("weird size of report descriptor (%u)", rsize);
1583                 return NULL;
1584         }
1585
1586         if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
1587                 dbg("couldn't allocate rdesc memory");
1588                 return NULL;
1589         }
1590
1591         if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
1592                 dbg("reading report descriptor failed");
1593                 kfree(rdesc);
1594                 return NULL;
1595         }
1596
1597 #ifdef DEBUG_DATA
1598         printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
1599         for (n = 0; n < rsize; n++)
1600                 printk(" %02x", (unsigned char) rdesc[n]);
1601         printk("\n");
1602 #endif
1603
1604         if (!(hid = hid_parse_report(rdesc, rsize))) {
1605                 dbg("parsing report descriptor failed");
1606                 kfree(rdesc);
1607                 return NULL;
1608         }
1609
1610         kfree(rdesc);
1611         hid->quirks = quirks;
1612
1613         if (hid_alloc_buffers(dev, hid)) {
1614                 hid_free_buffers(dev, hid);
1615                 goto fail;
1616         }
1617
1618         for (n = 0; n < interface->desc.bNumEndpoints; n++) {
1619
1620                 struct usb_endpoint_descriptor *endpoint;
1621                 int pipe;
1622
1623                 endpoint = &interface->endpoint[n].desc;
1624                 if ((endpoint->bmAttributes & 3) != 3)          /* Not an interrupt endpoint */
1625                         continue;
1626
1627                 if (endpoint->bEndpointAddress & USB_DIR_IN) {
1628                         int len;
1629
1630                         if (hid->urbin)
1631                                 continue;
1632                         if (!(hid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
1633                                 goto fail;
1634                         pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
1635                         len = usb_maxpacket(dev, pipe, 0);
1636                         if (len > HID_BUFFER_SIZE)
1637                                 len = HID_BUFFER_SIZE;
1638                         usb_fill_int_urb(hid->urbin, dev, pipe, hid->inbuf, len,
1639                                          hid_irq_in, hid, endpoint->bInterval);
1640                         hid->urbin->transfer_dma = hid->inbuf_dma;
1641                         hid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1642                 } else {
1643                         if (hid->urbout)
1644                                 continue;
1645                         if (!(hid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
1646                                 goto fail;
1647                         pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
1648                         usb_fill_int_urb(hid->urbout, dev, pipe, hid->outbuf, 0,
1649                                           hid_irq_out, hid, 1);
1650                         hid->urbout->transfer_dma = hid->outbuf_dma;
1651                         hid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1652                 }
1653         }
1654
1655         if (!hid->urbin) {
1656                 err("couldn't find an input interrupt endpoint");
1657                 goto fail;
1658         }
1659
1660         init_waitqueue_head(&hid->wait);
1661
1662         hid->outlock = SPIN_LOCK_UNLOCKED;
1663         hid->ctrllock = SPIN_LOCK_UNLOCKED;
1664
1665         hid->version = le16_to_cpu(hdesc->bcdHID);
1666         hid->country = hdesc->bCountryCode;
1667         hid->dev = dev;
1668         hid->intf = intf;
1669         hid->ifnum = interface->desc.bInterfaceNumber;
1670
1671         hid->name[0] = 0;
1672
1673         if (!(buf = kmalloc(64, GFP_KERNEL)))
1674                 goto fail;
1675
1676         if (usb_string(dev, dev->descriptor.iManufacturer, buf, 64) > 0) {
1677                 strcat(hid->name, buf);
1678                 if (usb_string(dev, dev->descriptor.iProduct, buf, 64) > 0)
1679                         snprintf(hid->name, 64, "%s %s", hid->name, buf);
1680         } else if (usb_string(dev, dev->descriptor.iProduct, buf, 128) > 0) {
1681                         snprintf(hid->name, 128, "%s", buf);
1682         } else
1683                 snprintf(hid->name, 128, "%04x:%04x", dev->descriptor.idVendor, dev->descriptor.idProduct);
1684
1685         usb_make_path(dev, buf, 64);
1686         snprintf(hid->phys, 64, "%s/input%d", buf,
1687                         intf->altsetting[0].desc.bInterfaceNumber);
1688
1689         if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
1690                 hid->uniq[0] = 0;
1691
1692         kfree(buf);
1693
1694         hid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
1695         if (!hid->urbctrl)
1696                 goto fail;
1697         usb_fill_control_urb(hid->urbctrl, dev, 0, (void *) hid->cr,
1698                              hid->ctrlbuf, 1, hid_ctrl, hid);
1699         hid->urbctrl->setup_dma = hid->cr_dma;
1700         hid->urbctrl->transfer_dma = hid->ctrlbuf_dma;
1701         hid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP
1702                                 | URB_NO_SETUP_DMA_MAP);
1703
1704         return hid;
1705
1706 fail:
1707
1708         if (hid->urbin)
1709                 usb_free_urb(hid->urbin);
1710         if (hid->urbout)
1711                 usb_free_urb(hid->urbout);
1712         if (hid->urbctrl)
1713                 usb_free_urb(hid->urbctrl);
1714         hid_free_buffers(dev, hid);
1715         hid_free_device(hid);
1716
1717         return NULL;
1718 }
1719
1720 static void hid_disconnect(struct usb_interface *intf)
1721 {
1722         struct hid_device *hid = usb_get_intfdata (intf);
1723
1724         if (!hid)
1725                 return;
1726
1727         usb_set_intfdata(intf, NULL);
1728         usb_unlink_urb(hid->urbin);
1729         usb_unlink_urb(hid->urbout);
1730         usb_unlink_urb(hid->urbctrl);
1731
1732         if (hid->claimed & HID_CLAIMED_INPUT)
1733                 hidinput_disconnect(hid);
1734         if (hid->claimed & HID_CLAIMED_HIDDEV)
1735                 hiddev_disconnect(hid);
1736
1737         usb_free_urb(hid->urbin);
1738         usb_free_urb(hid->urbctrl);
1739         if (hid->urbout)
1740                 usb_free_urb(hid->urbout);
1741
1742         hid_free_buffers(hid->dev, hid);
1743         hid_free_device(hid);
1744 }
1745
1746 static int hid_probe (struct usb_interface *intf, const struct usb_device_id *id)
1747 {
1748         struct hid_device *hid;
1749         char path[64];
1750         int i;
1751         char *c;
1752
1753         dbg("HID probe called for ifnum %d",
1754                         intf->altsetting->desc.bInterfaceNumber);
1755
1756         if (!(hid = usb_hid_configure(intf)))
1757                 return -EIO;
1758
1759         hid_init_reports(hid);
1760         hid_dump_device(hid);
1761
1762         if (!hidinput_connect(hid))
1763                 hid->claimed |= HID_CLAIMED_INPUT;
1764         if (!hiddev_connect(hid))
1765                 hid->claimed |= HID_CLAIMED_HIDDEV;
1766
1767         usb_set_intfdata(intf, hid);
1768
1769         if (!hid->claimed) {
1770                 printk ("HID device not claimed by input or hiddev\n");
1771                 hid_disconnect(intf);
1772                 return -EIO;
1773         }
1774
1775         printk(KERN_INFO);
1776
1777         if (hid->claimed & HID_CLAIMED_INPUT)
1778                 printk("input");
1779         if (hid->claimed == (HID_CLAIMED_INPUT | HID_CLAIMED_HIDDEV))
1780                 printk(",");
1781         if (hid->claimed & HID_CLAIMED_HIDDEV)
1782                 printk("hiddev%d", hid->minor);
1783
1784         c = "Device";
1785         for (i = 0; i < hid->maxcollection; i++) {
1786                 if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
1787                     (hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1788                     (hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
1789                         c = hid_types[hid->collection[i].usage & 0xffff];
1790                         break;
1791                 }
1792         }
1793
1794         usb_make_path(interface_to_usbdev(intf), path, 63);
1795
1796         printk(": USB HID v%x.%02x %s [%s] on %s\n",
1797                 hid->version >> 8, hid->version & 0xff, c, hid->name, path);
1798
1799         return 0;
1800 }
1801
1802 static struct usb_device_id hid_usb_ids [] = {
1803         { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1804             .bInterfaceClass = USB_INTERFACE_CLASS_HID },
1805         { }                                             /* Terminating entry */
1806 };
1807
1808 MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1809
1810 static struct usb_driver hid_driver = {
1811         .owner =        THIS_MODULE,
1812         .name =         "usbhid",
1813         .probe =        hid_probe,
1814         .disconnect =   hid_disconnect,
1815         .id_table =     hid_usb_ids,
1816 };
1817
1818 static int __init hid_init(void)
1819 {
1820         int retval;
1821         retval = hiddev_init();
1822         if (retval)
1823                 goto hiddev_init_fail;
1824         retval = usb_register(&hid_driver);
1825         if (retval)
1826                 goto usb_register_fail;
1827         info(DRIVER_VERSION ":" DRIVER_DESC);
1828
1829         return 0;
1830 usb_register_fail:
1831         hiddev_exit();
1832 hiddev_init_fail:
1833         return retval;
1834 }
1835
1836 static void __exit hid_exit(void)
1837 {
1838         hiddev_exit();
1839         usb_deregister(&hid_driver);
1840 }
1841
1842 module_init(hid_init);
1843 module_exit(hid_exit);
1844
1845 MODULE_AUTHOR(DRIVER_AUTHOR);
1846 MODULE_DESCRIPTION(DRIVER_DESC);
1847 MODULE_LICENSE(DRIVER_LICENSE);