hid-core.c revision 96a7813736a6aa1e2561ecc0d499817daecb4860
1/* 2 * HID support for Linux 3 * 4 * Copyright (c) 1999 Andreas Gal 5 * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> 6 * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc 7 * Copyright (c) 2006-2010 Jiri Kosina 8 */ 9 10/* 11 * This program is free software; you can redistribute it and/or modify it 12 * under the terms of the GNU General Public License as published by the Free 13 * Software Foundation; either version 2 of the License, or (at your option) 14 * any later version. 15 */ 16 17#include <linux/module.h> 18#include <linux/slab.h> 19#include <linux/init.h> 20#include <linux/kernel.h> 21#include <linux/list.h> 22#include <linux/mm.h> 23#include <linux/spinlock.h> 24#include <asm/unaligned.h> 25#include <asm/byteorder.h> 26#include <linux/input.h> 27#include <linux/wait.h> 28#include <linux/vmalloc.h> 29#include <linux/sched.h> 30 31#include <linux/hid.h> 32#include <linux/hiddev.h> 33#include <linux/hid-debug.h> 34#include <linux/hidraw.h> 35 36#include "hid-ids.h" 37 38/* 39 * Version Information 40 */ 41 42#define DRIVER_DESC "HID core driver" 43#define DRIVER_LICENSE "GPL" 44 45int hid_debug = 0; 46module_param_named(debug, hid_debug, int, 0600); 47MODULE_PARM_DESC(debug, "toggle HID debugging messages"); 48EXPORT_SYMBOL_GPL(hid_debug); 49 50/* 51 * Register a new report for a device. 52 */ 53 54struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id) 55{ 56 struct hid_report_enum *report_enum = device->report_enum + type; 57 struct hid_report *report; 58 59 if (report_enum->report_id_hash[id]) 60 return report_enum->report_id_hash[id]; 61 62 if (!(report = kzalloc(sizeof(struct hid_report), GFP_KERNEL))) 63 return NULL; 64 65 if (id != 0) 66 report_enum->numbered = 1; 67 68 report->id = id; 69 report->type = type; 70 report->size = 0; 71 report->device = device; 72 report_enum->report_id_hash[id] = report; 73 74 list_add_tail(&report->list, &report_enum->report_list); 75 76 return report; 77} 78EXPORT_SYMBOL_GPL(hid_register_report); 79 80/* 81 * Register a new field for this report. 82 */ 83 84static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values) 85{ 86 struct hid_field *field; 87 88 if (report->maxfield == HID_MAX_FIELDS) { 89 dbg_hid("too many fields in report\n"); 90 return NULL; 91 } 92 93 if (!(field = kzalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage) 94 + values * sizeof(unsigned), GFP_KERNEL))) return NULL; 95 96 field->index = report->maxfield++; 97 report->field[field->index] = field; 98 field->usage = (struct hid_usage *)(field + 1); 99 field->value = (s32 *)(field->usage + usages); 100 field->report = report; 101 102 return field; 103} 104 105/* 106 * Open a collection. The type/usage is pushed on the stack. 107 */ 108 109static int open_collection(struct hid_parser *parser, unsigned type) 110{ 111 struct hid_collection *collection; 112 unsigned usage; 113 114 usage = parser->local.usage[0]; 115 116 if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) { 117 dbg_hid("collection stack overflow\n"); 118 return -1; 119 } 120 121 if (parser->device->maxcollection == parser->device->collection_size) { 122 collection = kmalloc(sizeof(struct hid_collection) * 123 parser->device->collection_size * 2, GFP_KERNEL); 124 if (collection == NULL) { 125 dbg_hid("failed to reallocate collection array\n"); 126 return -1; 127 } 128 memcpy(collection, parser->device->collection, 129 sizeof(struct hid_collection) * 130 parser->device->collection_size); 131 memset(collection + parser->device->collection_size, 0, 132 sizeof(struct hid_collection) * 133 parser->device->collection_size); 134 kfree(parser->device->collection); 135 parser->device->collection = collection; 136 parser->device->collection_size *= 2; 137 } 138 139 parser->collection_stack[parser->collection_stack_ptr++] = 140 parser->device->maxcollection; 141 142 collection = parser->device->collection + 143 parser->device->maxcollection++; 144 collection->type = type; 145 collection->usage = usage; 146 collection->level = parser->collection_stack_ptr - 1; 147 148 if (type == HID_COLLECTION_APPLICATION) 149 parser->device->maxapplication++; 150 151 return 0; 152} 153 154/* 155 * Close a collection. 156 */ 157 158static int close_collection(struct hid_parser *parser) 159{ 160 if (!parser->collection_stack_ptr) { 161 dbg_hid("collection stack underflow\n"); 162 return -1; 163 } 164 parser->collection_stack_ptr--; 165 return 0; 166} 167 168/* 169 * Climb up the stack, search for the specified collection type 170 * and return the usage. 171 */ 172 173static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type) 174{ 175 int n; 176 for (n = parser->collection_stack_ptr - 1; n >= 0; n--) 177 if (parser->device->collection[parser->collection_stack[n]].type == type) 178 return parser->device->collection[parser->collection_stack[n]].usage; 179 return 0; /* we know nothing about this usage type */ 180} 181 182/* 183 * Add a usage to the temporary parser table. 184 */ 185 186static int hid_add_usage(struct hid_parser *parser, unsigned usage) 187{ 188 if (parser->local.usage_index >= HID_MAX_USAGES) { 189 dbg_hid("usage index exceeded\n"); 190 return -1; 191 } 192 parser->local.usage[parser->local.usage_index] = usage; 193 parser->local.collection_index[parser->local.usage_index] = 194 parser->collection_stack_ptr ? 195 parser->collection_stack[parser->collection_stack_ptr - 1] : 0; 196 parser->local.usage_index++; 197 return 0; 198} 199 200/* 201 * Register a new field for this report. 202 */ 203 204static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags) 205{ 206 struct hid_report *report; 207 struct hid_field *field; 208 int usages; 209 unsigned offset; 210 int i; 211 212 if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) { 213 dbg_hid("hid_register_report failed\n"); 214 return -1; 215 } 216 217 if (parser->global.logical_maximum < parser->global.logical_minimum) { 218 dbg_hid("logical range invalid %d %d\n", parser->global.logical_minimum, parser->global.logical_maximum); 219 return -1; 220 } 221 222 offset = report->size; 223 report->size += parser->global.report_size * parser->global.report_count; 224 225 if (!parser->local.usage_index) /* Ignore padding fields */ 226 return 0; 227 228 usages = max_t(int, parser->local.usage_index, parser->global.report_count); 229 230 if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL) 231 return 0; 232 233 field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL); 234 field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL); 235 field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION); 236 237 for (i = 0; i < usages; i++) { 238 int j = i; 239 /* Duplicate the last usage we parsed if we have excess values */ 240 if (i >= parser->local.usage_index) 241 j = parser->local.usage_index - 1; 242 field->usage[i].hid = parser->local.usage[j]; 243 field->usage[i].collection_index = 244 parser->local.collection_index[j]; 245 } 246 247 field->maxusage = usages; 248 field->flags = flags; 249 field->report_offset = offset; 250 field->report_type = report_type; 251 field->report_size = parser->global.report_size; 252 field->report_count = parser->global.report_count; 253 field->logical_minimum = parser->global.logical_minimum; 254 field->logical_maximum = parser->global.logical_maximum; 255 field->physical_minimum = parser->global.physical_minimum; 256 field->physical_maximum = parser->global.physical_maximum; 257 field->unit_exponent = parser->global.unit_exponent; 258 field->unit = parser->global.unit; 259 260 return 0; 261} 262 263/* 264 * Read data value from item. 265 */ 266 267static u32 item_udata(struct hid_item *item) 268{ 269 switch (item->size) { 270 case 1: return item->data.u8; 271 case 2: return item->data.u16; 272 case 4: return item->data.u32; 273 } 274 return 0; 275} 276 277static s32 item_sdata(struct hid_item *item) 278{ 279 switch (item->size) { 280 case 1: return item->data.s8; 281 case 2: return item->data.s16; 282 case 4: return item->data.s32; 283 } 284 return 0; 285} 286 287/* 288 * Process a global item. 289 */ 290 291static int hid_parser_global(struct hid_parser *parser, struct hid_item *item) 292{ 293 switch (item->tag) { 294 case HID_GLOBAL_ITEM_TAG_PUSH: 295 296 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) { 297 dbg_hid("global enviroment stack overflow\n"); 298 return -1; 299 } 300 301 memcpy(parser->global_stack + parser->global_stack_ptr++, 302 &parser->global, sizeof(struct hid_global)); 303 return 0; 304 305 case HID_GLOBAL_ITEM_TAG_POP: 306 307 if (!parser->global_stack_ptr) { 308 dbg_hid("global enviroment stack underflow\n"); 309 return -1; 310 } 311 312 memcpy(&parser->global, parser->global_stack + 313 --parser->global_stack_ptr, sizeof(struct hid_global)); 314 return 0; 315 316 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE: 317 parser->global.usage_page = item_udata(item); 318 return 0; 319 320 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM: 321 parser->global.logical_minimum = item_sdata(item); 322 return 0; 323 324 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM: 325 if (parser->global.logical_minimum < 0) 326 parser->global.logical_maximum = item_sdata(item); 327 else 328 parser->global.logical_maximum = item_udata(item); 329 return 0; 330 331 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM: 332 parser->global.physical_minimum = item_sdata(item); 333 return 0; 334 335 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM: 336 if (parser->global.physical_minimum < 0) 337 parser->global.physical_maximum = item_sdata(item); 338 else 339 parser->global.physical_maximum = item_udata(item); 340 return 0; 341 342 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT: 343 parser->global.unit_exponent = item_sdata(item); 344 return 0; 345 346 case HID_GLOBAL_ITEM_TAG_UNIT: 347 parser->global.unit = item_udata(item); 348 return 0; 349 350 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE: 351 parser->global.report_size = item_udata(item); 352 if (parser->global.report_size > 32) { 353 dbg_hid("invalid report_size %d\n", 354 parser->global.report_size); 355 return -1; 356 } 357 return 0; 358 359 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT: 360 parser->global.report_count = item_udata(item); 361 if (parser->global.report_count > HID_MAX_USAGES) { 362 dbg_hid("invalid report_count %d\n", 363 parser->global.report_count); 364 return -1; 365 } 366 return 0; 367 368 case HID_GLOBAL_ITEM_TAG_REPORT_ID: 369 parser->global.report_id = item_udata(item); 370 if (parser->global.report_id == 0) { 371 dbg_hid("report_id 0 is invalid\n"); 372 return -1; 373 } 374 return 0; 375 376 default: 377 dbg_hid("unknown global tag 0x%x\n", item->tag); 378 return -1; 379 } 380} 381 382/* 383 * Process a local item. 384 */ 385 386static int hid_parser_local(struct hid_parser *parser, struct hid_item *item) 387{ 388 __u32 data; 389 unsigned n; 390 391 /* Local delimiter could have value 0, which allows size to be 0 */ 392 if (item->size == 0 && item->tag != HID_LOCAL_ITEM_TAG_DELIMITER) { 393 dbg_hid("item data expected for local item\n"); 394 return -1; 395 } 396 397 data = item_udata(item); 398 399 switch (item->tag) { 400 case HID_LOCAL_ITEM_TAG_DELIMITER: 401 402 if (data) { 403 /* 404 * We treat items before the first delimiter 405 * as global to all usage sets (branch 0). 406 * In the moment we process only these global 407 * items and the first delimiter set. 408 */ 409 if (parser->local.delimiter_depth != 0) { 410 dbg_hid("nested delimiters\n"); 411 return -1; 412 } 413 parser->local.delimiter_depth++; 414 parser->local.delimiter_branch++; 415 } else { 416 if (parser->local.delimiter_depth < 1) { 417 dbg_hid("bogus close delimiter\n"); 418 return -1; 419 } 420 parser->local.delimiter_depth--; 421 } 422 return 1; 423 424 case HID_LOCAL_ITEM_TAG_USAGE: 425 426 if (parser->local.delimiter_branch > 1) { 427 dbg_hid("alternative usage ignored\n"); 428 return 0; 429 } 430 431 if (item->size <= 2) 432 data = (parser->global.usage_page << 16) + data; 433 434 return hid_add_usage(parser, data); 435 436 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM: 437 438 if (parser->local.delimiter_branch > 1) { 439 dbg_hid("alternative usage ignored\n"); 440 return 0; 441 } 442 443 if (item->size <= 2) 444 data = (parser->global.usage_page << 16) + data; 445 446 parser->local.usage_minimum = data; 447 return 0; 448 449 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM: 450 451 if (parser->local.delimiter_branch > 1) { 452 dbg_hid("alternative usage ignored\n"); 453 return 0; 454 } 455 456 if (item->size <= 2) 457 data = (parser->global.usage_page << 16) + data; 458 459 for (n = parser->local.usage_minimum; n <= data; n++) 460 if (hid_add_usage(parser, n)) { 461 dbg_hid("hid_add_usage failed\n"); 462 return -1; 463 } 464 return 0; 465 466 default: 467 468 dbg_hid("unknown local item tag 0x%x\n", item->tag); 469 return 0; 470 } 471 return 0; 472} 473 474/* 475 * Process a main item. 476 */ 477 478static int hid_parser_main(struct hid_parser *parser, struct hid_item *item) 479{ 480 __u32 data; 481 int ret; 482 483 data = item_udata(item); 484 485 switch (item->tag) { 486 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION: 487 ret = open_collection(parser, data & 0xff); 488 break; 489 case HID_MAIN_ITEM_TAG_END_COLLECTION: 490 ret = close_collection(parser); 491 break; 492 case HID_MAIN_ITEM_TAG_INPUT: 493 ret = hid_add_field(parser, HID_INPUT_REPORT, data); 494 break; 495 case HID_MAIN_ITEM_TAG_OUTPUT: 496 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data); 497 break; 498 case HID_MAIN_ITEM_TAG_FEATURE: 499 ret = hid_add_field(parser, HID_FEATURE_REPORT, data); 500 break; 501 default: 502 dbg_hid("unknown main item tag 0x%x\n", item->tag); 503 ret = 0; 504 } 505 506 memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */ 507 508 return ret; 509} 510 511/* 512 * Process a reserved item. 513 */ 514 515static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item) 516{ 517 dbg_hid("reserved item type, tag 0x%x\n", item->tag); 518 return 0; 519} 520 521/* 522 * Free a report and all registered fields. The field->usage and 523 * field->value table's are allocated behind the field, so we need 524 * only to free(field) itself. 525 */ 526 527static void hid_free_report(struct hid_report *report) 528{ 529 unsigned n; 530 531 for (n = 0; n < report->maxfield; n++) 532 kfree(report->field[n]); 533 kfree(report); 534} 535 536/* 537 * Free a device structure, all reports, and all fields. 538 */ 539 540static void hid_device_release(struct device *dev) 541{ 542 struct hid_device *device = container_of(dev, struct hid_device, dev); 543 unsigned i, j; 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 kfree(device->rdesc); 556 kfree(device->collection); 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 565static 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 case 0: 600 return start; 601 602 case 1: 603 if ((end - start) < 1) 604 return NULL; 605 item->data.u8 = *start++; 606 return start; 607 608 case 2: 609 if ((end - start) < 2) 610 return NULL; 611 item->data.u16 = get_unaligned_le16(start); 612 start = (__u8 *)((__le16 *)start + 1); 613 return start; 614 615 case 3: 616 item->size++; 617 if ((end - start) < 4) 618 return NULL; 619 item->data.u32 = get_unaligned_le32(start); 620 start = (__u8 *)((__le32 *)start + 1); 621 return start; 622 } 623 624 return NULL; 625} 626 627/** 628 * hid_parse_report - parse device report 629 * 630 * @device: hid device 631 * @start: report start 632 * @size: report size 633 * 634 * Parse a report description into a hid_device structure. Reports are 635 * enumerated, fields are attached to these reports. 636 * 0 returned on success, otherwise nonzero error value. 637 */ 638int hid_parse_report(struct hid_device *device, __u8 *start, 639 unsigned size) 640{ 641 struct hid_parser *parser; 642 struct hid_item item; 643 __u8 *end; 644 int ret; 645 static int (*dispatch_type[])(struct hid_parser *parser, 646 struct hid_item *item) = { 647 hid_parser_main, 648 hid_parser_global, 649 hid_parser_local, 650 hid_parser_reserved 651 }; 652 653 if (device->driver->report_fixup) 654 device->driver->report_fixup(device, start, size); 655 656 device->rdesc = kmalloc(size, GFP_KERNEL); 657 if (device->rdesc == NULL) 658 return -ENOMEM; 659 memcpy(device->rdesc, start, size); 660 device->rsize = size; 661 662 parser = vmalloc(sizeof(struct hid_parser)); 663 if (!parser) { 664 ret = -ENOMEM; 665 goto err; 666 } 667 668 memset(parser, 0, sizeof(struct hid_parser)); 669 parser->device = device; 670 671 end = start + size; 672 ret = -EINVAL; 673 while ((start = fetch_item(start, end, &item)) != NULL) { 674 675 if (item.format != HID_ITEM_FORMAT_SHORT) { 676 dbg_hid("unexpected long global item\n"); 677 goto err; 678 } 679 680 if (dispatch_type[item.type](parser, &item)) { 681 dbg_hid("item %u %u %u %u parsing failed\n", 682 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag); 683 goto err; 684 } 685 686 if (start == end) { 687 if (parser->collection_stack_ptr) { 688 dbg_hid("unbalanced collection at end of report description\n"); 689 goto err; 690 } 691 if (parser->local.delimiter_depth) { 692 dbg_hid("unbalanced delimiter at end of report description\n"); 693 goto err; 694 } 695 vfree(parser); 696 return 0; 697 } 698 } 699 700 dbg_hid("item fetching failed at offset %d\n", (int)(end - start)); 701err: 702 vfree(parser); 703 return ret; 704} 705EXPORT_SYMBOL_GPL(hid_parse_report); 706 707/* 708 * Convert a signed n-bit integer to signed 32-bit integer. Common 709 * cases are done through the compiler, the screwed things has to be 710 * done by hand. 711 */ 712 713static s32 snto32(__u32 value, unsigned n) 714{ 715 switch (n) { 716 case 8: return ((__s8)value); 717 case 16: return ((__s16)value); 718 case 32: return ((__s32)value); 719 } 720 return value & (1 << (n - 1)) ? value | (-1 << n) : value; 721} 722 723/* 724 * Convert a signed 32-bit integer to a signed n-bit integer. 725 */ 726 727static u32 s32ton(__s32 value, unsigned n) 728{ 729 s32 a = value >> (n - 1); 730 if (a && a != -1) 731 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1; 732 return value & ((1 << n) - 1); 733} 734 735/* 736 * Extract/implement a data field from/to a little endian report (bit array). 737 * 738 * Code sort-of follows HID spec: 739 * http://www.usb.org/developers/devclass_docs/HID1_11.pdf 740 * 741 * While the USB HID spec allows unlimited length bit fields in "report 742 * descriptors", most devices never use more than 16 bits. 743 * One model of UPS is claimed to report "LINEV" as a 32-bit field. 744 * Search linux-kernel and linux-usb-devel archives for "hid-core extract". 745 */ 746 747static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n) 748{ 749 u64 x; 750 751 if (n > 32) 752 printk(KERN_WARNING "HID: extract() called with n (%d) > 32! (%s)\n", 753 n, current->comm); 754 755 report += offset >> 3; /* adjust byte index */ 756 offset &= 7; /* now only need bit offset into one byte */ 757 x = get_unaligned_le64(report); 758 x = (x >> offset) & ((1ULL << n) - 1); /* extract bit field */ 759 return (u32) x; 760} 761 762/* 763 * "implement" : set bits in a little endian bit stream. 764 * Same concepts as "extract" (see comments above). 765 * The data mangled in the bit stream remains in little endian 766 * order the whole time. It make more sense to talk about 767 * endianness of register values by considering a register 768 * a "cached" copy of the little endiad bit stream. 769 */ 770static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value) 771{ 772 u64 x; 773 u64 m = (1ULL << n) - 1; 774 775 if (n > 32) 776 printk(KERN_WARNING "HID: implement() called with n (%d) > 32! (%s)\n", 777 n, current->comm); 778 779 if (value > m) 780 printk(KERN_WARNING "HID: implement() called with too large value %d! (%s)\n", 781 value, current->comm); 782 WARN_ON(value > m); 783 value &= m; 784 785 report += offset >> 3; 786 offset &= 7; 787 788 x = get_unaligned_le64(report); 789 x &= ~(m << offset); 790 x |= ((u64)value) << offset; 791 put_unaligned_le64(x, report); 792} 793 794/* 795 * Search an array for a value. 796 */ 797 798static __inline__ int search(__s32 *array, __s32 value, unsigned n) 799{ 800 while (n--) { 801 if (*array++ == value) 802 return 0; 803 } 804 return -1; 805} 806 807/** 808 * hid_match_report - check if driver's raw_event should be called 809 * 810 * @hid: hid device 811 * @report_type: type to match against 812 * 813 * compare hid->driver->report_table->report_type to report->type 814 */ 815static int hid_match_report(struct hid_device *hid, struct hid_report *report) 816{ 817 const struct hid_report_id *id = hid->driver->report_table; 818 819 if (!id) /* NULL means all */ 820 return 1; 821 822 for (; id->report_type != HID_TERMINATOR; id++) 823 if (id->report_type == HID_ANY_ID || 824 id->report_type == report->type) 825 return 1; 826 return 0; 827} 828 829/** 830 * hid_match_usage - check if driver's event should be called 831 * 832 * @hid: hid device 833 * @usage: usage to match against 834 * 835 * compare hid->driver->usage_table->usage_{type,code} to 836 * usage->usage_{type,code} 837 */ 838static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage) 839{ 840 const struct hid_usage_id *id = hid->driver->usage_table; 841 842 if (!id) /* NULL means all */ 843 return 1; 844 845 for (; id->usage_type != HID_ANY_ID - 1; id++) 846 if ((id->usage_hid == HID_ANY_ID || 847 id->usage_hid == usage->hid) && 848 (id->usage_type == HID_ANY_ID || 849 id->usage_type == usage->type) && 850 (id->usage_code == HID_ANY_ID || 851 id->usage_code == usage->code)) 852 return 1; 853 return 0; 854} 855 856static void hid_process_event(struct hid_device *hid, struct hid_field *field, 857 struct hid_usage *usage, __s32 value, int interrupt) 858{ 859 struct hid_driver *hdrv = hid->driver; 860 int ret; 861 862 hid_dump_input(hid, usage, value); 863 864 if (hdrv && hdrv->event && hid_match_usage(hid, usage)) { 865 ret = hdrv->event(hid, field, usage, value); 866 if (ret != 0) { 867 if (ret < 0) 868 dbg_hid("%s's event failed with %d\n", 869 hdrv->name, ret); 870 return; 871 } 872 } 873 874 if (hid->claimed & HID_CLAIMED_INPUT) 875 hidinput_hid_event(hid, field, usage, value); 876 if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event) 877 hid->hiddev_hid_event(hid, field, usage, value); 878} 879 880/* 881 * Analyse a received field, and fetch the data from it. The field 882 * content is stored for next report processing (we do differential 883 * reporting to the layer). 884 */ 885 886static void hid_input_field(struct hid_device *hid, struct hid_field *field, 887 __u8 *data, int interrupt) 888{ 889 unsigned n; 890 unsigned count = field->report_count; 891 unsigned offset = field->report_offset; 892 unsigned size = field->report_size; 893 __s32 min = field->logical_minimum; 894 __s32 max = field->logical_maximum; 895 __s32 *value; 896 897 if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC))) 898 return; 899 900 for (n = 0; n < count; n++) { 901 902 value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) : 903 extract(data, offset + n * size, size); 904 905 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */ 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)); 930exit: 931 kfree(value); 932} 933 934/* 935 * Output the field into the report. 936 */ 937 938static void hid_output_field(struct hid_field *field, __u8 *data) 939{ 940 unsigned count = field->report_count; 941 unsigned offset = field->report_offset; 942 unsigned size = field->report_size; 943 unsigned n; 944 945 for (n = 0; n < count; n++) { 946 if (field->logical_minimum < 0) /* signed values */ 947 implement(data, offset + n * size, size, s32ton(field->value[n], size)); 948 else /* unsigned values */ 949 implement(data, offset + n * size, size, field->value[n]); 950 } 951} 952 953/* 954 * Create a report. 955 */ 956 957void hid_output_report(struct hid_report *report, __u8 *data) 958{ 959 unsigned n; 960 961 if (report->id > 0) 962 *data++ = report->id; 963 964 memset(data, 0, ((report->size - 1) >> 3) + 1); 965 for (n = 0; n < report->maxfield; n++) 966 hid_output_field(report->field[n], data); 967} 968EXPORT_SYMBOL_GPL(hid_output_report); 969 970/* 971 * Set a field value. The report this field belongs to has to be 972 * created and transferred to the device, to set this value in the 973 * device. 974 */ 975 976int hid_set_field(struct hid_field *field, unsigned offset, __s32 value) 977{ 978 unsigned size = field->report_size; 979 980 hid_dump_input(field->report->device, field->usage + offset, value); 981 982 if (offset >= field->report_count) { 983 dbg_hid("offset (%d) exceeds report_count (%d)\n", offset, field->report_count); 984 return -1; 985 } 986 if (field->logical_minimum < 0) { 987 if (value != snto32(s32ton(value, size), size)) { 988 dbg_hid("value %d is out of range\n", value); 989 return -1; 990 } 991 } 992 field->value[offset] = value; 993 return 0; 994} 995EXPORT_SYMBOL_GPL(hid_set_field); 996 997static struct hid_report *hid_get_report(struct hid_report_enum *report_enum, 998 const u8 *data) 999{ 1000 struct hid_report *report; 1001 unsigned int n = 0; /* Normally report number is 0 */ 1002 1003 /* Device uses numbered reports, data[0] is report number */ 1004 if (report_enum->numbered) 1005 n = *data; 1006 1007 report = report_enum->report_id_hash[n]; 1008 if (report == NULL) 1009 dbg_hid("undefined report_id %u received\n", n); 1010 1011 return report; 1012} 1013 1014void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, 1015 int interrupt) 1016{ 1017 struct hid_report_enum *report_enum = hid->report_enum + type; 1018 struct hid_report *report; 1019 unsigned int a; 1020 int rsize, csize = size; 1021 u8 *cdata = data; 1022 1023 report = hid_get_report(report_enum, data); 1024 if (!report) 1025 return; 1026 1027 if (report_enum->numbered) { 1028 cdata++; 1029 csize--; 1030 } 1031 1032 rsize = ((report->size - 1) >> 3) + 1; 1033 1034 if (csize < rsize) { 1035 dbg_hid("report %d is too short, (%d < %d)\n", report->id, 1036 csize, rsize); 1037 memset(cdata + csize, 0, rsize - csize); 1038 } 1039 1040 if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event) 1041 hid->hiddev_report_event(hid, report); 1042 if (hid->claimed & HID_CLAIMED_HIDRAW) { 1043 /* numbered reports need to be passed with the report num */ 1044 if (report_enum->numbered) 1045 hidraw_report_event(hid, data - 1, size + 1); 1046 else 1047 hidraw_report_event(hid, data, size); 1048 } 1049 1050 for (a = 0; a < report->maxfield; a++) 1051 hid_input_field(hid, report->field[a], cdata, interrupt); 1052 1053 if (hid->claimed & HID_CLAIMED_INPUT) 1054 hidinput_report_event(hid, report); 1055} 1056EXPORT_SYMBOL_GPL(hid_report_raw_event); 1057 1058/** 1059 * hid_input_report - report data from lower layer (usb, bt...) 1060 * 1061 * @hid: hid device 1062 * @type: HID report type (HID_*_REPORT) 1063 * @data: report contents 1064 * @size: size of data parameter 1065 * @interrupt: distinguish between interrupt and control transfers 1066 * 1067 * This is data entry for lower layers. 1068 */ 1069int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt) 1070{ 1071 struct hid_report_enum *report_enum; 1072 struct hid_driver *hdrv; 1073 struct hid_report *report; 1074 char *buf; 1075 unsigned int i; 1076 int ret; 1077 1078 if (!hid || !hid->driver) 1079 return -ENODEV; 1080 report_enum = hid->report_enum + type; 1081 hdrv = hid->driver; 1082 1083 if (!size) { 1084 dbg_hid("empty report\n"); 1085 return -1; 1086 } 1087 1088 buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC); 1089 1090 if (!buf) { 1091 report = hid_get_report(report_enum, data); 1092 goto nomem; 1093 } 1094 1095 snprintf(buf, HID_DEBUG_BUFSIZE - 1, 1096 "\nreport (size %u) (%snumbered)\n", size, report_enum->numbered ? "" : "un"); 1097 hid_debug_event(hid, buf); 1098 1099 report = hid_get_report(report_enum, data); 1100 if (!report) { 1101 kfree(buf); 1102 return -1; 1103 } 1104 1105 /* dump the report */ 1106 snprintf(buf, HID_DEBUG_BUFSIZE - 1, 1107 "report %d (size %u) = ", report->id, size); 1108 hid_debug_event(hid, buf); 1109 for (i = 0; i < size; i++) { 1110 snprintf(buf, HID_DEBUG_BUFSIZE - 1, 1111 " %02x", data[i]); 1112 hid_debug_event(hid, buf); 1113 } 1114 hid_debug_event(hid, "\n"); 1115 1116 kfree(buf); 1117 1118nomem: 1119 if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) { 1120 ret = hdrv->raw_event(hid, report, data, size); 1121 if (ret != 0) 1122 return ret < 0 ? ret : 0; 1123 } 1124 1125 hid_report_raw_event(hid, type, data, size, interrupt); 1126 1127 return 0; 1128} 1129EXPORT_SYMBOL_GPL(hid_input_report); 1130 1131static bool hid_match_one_id(struct hid_device *hdev, 1132 const struct hid_device_id *id) 1133{ 1134 return id->bus == hdev->bus && 1135 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) && 1136 (id->product == HID_ANY_ID || id->product == hdev->product); 1137} 1138 1139static const struct hid_device_id *hid_match_id(struct hid_device *hdev, 1140 const struct hid_device_id *id) 1141{ 1142 for (; id->bus; id++) 1143 if (hid_match_one_id(hdev, id)) 1144 return id; 1145 1146 return NULL; 1147} 1148 1149static const struct hid_device_id hid_hiddev_list[] = { 1150 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) }, 1151 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) }, 1152 { } 1153}; 1154 1155static bool hid_hiddev(struct hid_device *hdev) 1156{ 1157 return !!hid_match_id(hdev, hid_hiddev_list); 1158} 1159 1160int hid_connect(struct hid_device *hdev, unsigned int connect_mask) 1161{ 1162 static const char *types[] = { "Device", "Pointer", "Mouse", "Device", 1163 "Joystick", "Gamepad", "Keyboard", "Keypad", 1164 "Multi-Axis Controller" 1165 }; 1166 const char *type, *bus; 1167 char buf[64]; 1168 unsigned int i; 1169 int len; 1170 1171 if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE) 1172 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV); 1173 if (hdev->bus != BUS_USB) 1174 connect_mask &= ~HID_CONNECT_HIDDEV; 1175 if (hid_hiddev(hdev)) 1176 connect_mask |= HID_CONNECT_HIDDEV_FORCE; 1177 1178 if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev, 1179 connect_mask & HID_CONNECT_HIDINPUT_FORCE)) 1180 hdev->claimed |= HID_CLAIMED_INPUT; 1181 if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect && 1182 !hdev->hiddev_connect(hdev, 1183 connect_mask & HID_CONNECT_HIDDEV_FORCE)) 1184 hdev->claimed |= HID_CLAIMED_HIDDEV; 1185 if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev)) 1186 hdev->claimed |= HID_CLAIMED_HIDRAW; 1187 1188 if (!hdev->claimed) { 1189 dev_err(&hdev->dev, "claimed by neither input, hiddev nor " 1190 "hidraw\n"); 1191 return -ENODEV; 1192 } 1193 1194 if ((hdev->claimed & HID_CLAIMED_INPUT) && 1195 (connect_mask & HID_CONNECT_FF) && hdev->ff_init) 1196 hdev->ff_init(hdev); 1197 1198 len = 0; 1199 if (hdev->claimed & HID_CLAIMED_INPUT) 1200 len += sprintf(buf + len, "input"); 1201 if (hdev->claimed & HID_CLAIMED_HIDDEV) 1202 len += sprintf(buf + len, "%shiddev%d", len ? "," : "", 1203 hdev->minor); 1204 if (hdev->claimed & HID_CLAIMED_HIDRAW) 1205 len += sprintf(buf + len, "%shidraw%d", len ? "," : "", 1206 ((struct hidraw *)hdev->hidraw)->minor); 1207 1208 type = "Device"; 1209 for (i = 0; i < hdev->maxcollection; i++) { 1210 struct hid_collection *col = &hdev->collection[i]; 1211 if (col->type == HID_COLLECTION_APPLICATION && 1212 (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK && 1213 (col->usage & 0xffff) < ARRAY_SIZE(types)) { 1214 type = types[col->usage & 0xffff]; 1215 break; 1216 } 1217 } 1218 1219 switch (hdev->bus) { 1220 case BUS_USB: 1221 bus = "USB"; 1222 break; 1223 case BUS_BLUETOOTH: 1224 bus = "BLUETOOTH"; 1225 break; 1226 default: 1227 bus = "<UNKNOWN>"; 1228 } 1229 1230 dev_info(&hdev->dev, "%s: %s HID v%x.%02x %s [%s] on %s\n", 1231 buf, bus, hdev->version >> 8, hdev->version & 0xff, 1232 type, hdev->name, hdev->phys); 1233 1234 return 0; 1235} 1236EXPORT_SYMBOL_GPL(hid_connect); 1237 1238void hid_disconnect(struct hid_device *hdev) 1239{ 1240 if (hdev->claimed & HID_CLAIMED_INPUT) 1241 hidinput_disconnect(hdev); 1242 if (hdev->claimed & HID_CLAIMED_HIDDEV) 1243 hdev->hiddev_disconnect(hdev); 1244 if (hdev->claimed & HID_CLAIMED_HIDRAW) 1245 hidraw_disconnect(hdev); 1246} 1247EXPORT_SYMBOL_GPL(hid_disconnect); 1248 1249/* a list of devices for which there is a specialized driver on HID bus */ 1250static const struct hid_device_id hid_blacklist[] = { 1251 { HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M1968) }, 1252 { HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M2256) }, 1253 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) }, 1254 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) }, 1255 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) }, 1256 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) }, 1257 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) }, 1258 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) }, 1259 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) }, 1260 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) }, 1261 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) }, 1262 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) }, 1263 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) }, 1264 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) }, 1265 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) }, 1266 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) }, 1267 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) }, 1268 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) }, 1269 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) }, 1270 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) }, 1271 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) }, 1272 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) }, 1273 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) }, 1274 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) }, 1275 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) }, 1276 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) }, 1277 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) }, 1278 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) }, 1279 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) }, 1280 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) }, 1281 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) }, 1282 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) }, 1283 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) }, 1284 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) }, 1285 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) }, 1286 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) }, 1287 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) }, 1288 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) }, 1289 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) }, 1290 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) }, 1291 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) }, 1292 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) }, 1293 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) }, 1294 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) }, 1295 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) }, 1296 { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) }, 1297 { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) }, 1298 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) }, 1299 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) }, 1300 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) }, 1301 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) }, 1302 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) }, 1303 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) }, 1304 { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) }, 1305 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) }, 1306 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) }, 1307 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) }, 1308 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) }, 1309 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) }, 1310 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) }, 1311 { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) }, 1312 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) }, 1313 { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) }, 1314 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) }, 1315 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) }, 1316 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) }, 1317 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) }, 1318 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) }, 1319 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) }, 1320 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) }, 1321 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) }, 1322 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) }, 1323 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) }, 1324 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) }, 1325 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) }, 1326 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) }, 1327 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) }, 1328 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) }, 1329 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) }, 1330 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) }, 1331 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) }, 1332 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) }, 1333 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) }, 1334 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) }, 1335 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) }, 1336 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) }, 1337 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) }, 1338 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) }, 1339 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) }, 1340 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) }, 1341 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) }, 1342 { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) }, 1343 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) }, 1344 { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) }, 1345 { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) }, 1346 { HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) }, 1347 { HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_PIXART_IMAGING_INC_OPTICAL_TOUCH_SCREEN) }, 1348 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) }, 1349 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) }, 1350 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) }, 1351 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) }, 1352 { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, USB_DEVICE_ID_MTP) }, 1353 { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) }, 1354 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) }, 1355 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) }, 1356 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) }, 1357 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) }, 1358 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) }, 1359 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) }, 1360 { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) }, 1361 { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) }, 1362 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) }, 1363 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) }, 1364 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) }, 1365 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) }, 1366 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) }, 1367 1368 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) }, 1369 { } 1370}; 1371 1372struct hid_dynid { 1373 struct list_head list; 1374 struct hid_device_id id; 1375}; 1376 1377/** 1378 * store_new_id - add a new HID device ID to this driver and re-probe devices 1379 * @driver: target device driver 1380 * @buf: buffer for scanning device ID data 1381 * @count: input size 1382 * 1383 * Adds a new dynamic hid device ID to this driver, 1384 * and causes the driver to probe for all devices again. 1385 */ 1386static ssize_t store_new_id(struct device_driver *drv, const char *buf, 1387 size_t count) 1388{ 1389 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver); 1390 struct hid_dynid *dynid; 1391 __u32 bus, vendor, product; 1392 unsigned long driver_data = 0; 1393 int ret; 1394 1395 ret = sscanf(buf, "%x %x %x %lx", 1396 &bus, &vendor, &product, &driver_data); 1397 if (ret < 3) 1398 return -EINVAL; 1399 1400 dynid = kzalloc(sizeof(*dynid), GFP_KERNEL); 1401 if (!dynid) 1402 return -ENOMEM; 1403 1404 dynid->id.bus = bus; 1405 dynid->id.vendor = vendor; 1406 dynid->id.product = product; 1407 dynid->id.driver_data = driver_data; 1408 1409 spin_lock(&hdrv->dyn_lock); 1410 list_add_tail(&dynid->list, &hdrv->dyn_list); 1411 spin_unlock(&hdrv->dyn_lock); 1412 1413 ret = 0; 1414 if (get_driver(&hdrv->driver)) { 1415 ret = driver_attach(&hdrv->driver); 1416 put_driver(&hdrv->driver); 1417 } 1418 1419 return ret ? : count; 1420} 1421static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id); 1422 1423static void hid_free_dynids(struct hid_driver *hdrv) 1424{ 1425 struct hid_dynid *dynid, *n; 1426 1427 spin_lock(&hdrv->dyn_lock); 1428 list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) { 1429 list_del(&dynid->list); 1430 kfree(dynid); 1431 } 1432 spin_unlock(&hdrv->dyn_lock); 1433} 1434 1435static const struct hid_device_id *hid_match_device(struct hid_device *hdev, 1436 struct hid_driver *hdrv) 1437{ 1438 struct hid_dynid *dynid; 1439 1440 spin_lock(&hdrv->dyn_lock); 1441 list_for_each_entry(dynid, &hdrv->dyn_list, list) { 1442 if (hid_match_one_id(hdev, &dynid->id)) { 1443 spin_unlock(&hdrv->dyn_lock); 1444 return &dynid->id; 1445 } 1446 } 1447 spin_unlock(&hdrv->dyn_lock); 1448 1449 return hid_match_id(hdev, hdrv->id_table); 1450} 1451 1452static int hid_bus_match(struct device *dev, struct device_driver *drv) 1453{ 1454 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver); 1455 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 1456 1457 if (!hid_match_device(hdev, hdrv)) 1458 return 0; 1459 1460 /* generic wants all non-blacklisted */ 1461 if (!strncmp(hdrv->name, "generic-", 8)) 1462 return !hid_match_id(hdev, hid_blacklist); 1463 1464 return 1; 1465} 1466 1467static int hid_device_probe(struct device *dev) 1468{ 1469 struct hid_driver *hdrv = container_of(dev->driver, 1470 struct hid_driver, driver); 1471 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 1472 const struct hid_device_id *id; 1473 int ret = 0; 1474 1475 if (!hdev->driver) { 1476 id = hid_match_device(hdev, hdrv); 1477 if (id == NULL) 1478 return -ENODEV; 1479 1480 hdev->driver = hdrv; 1481 if (hdrv->probe) { 1482 ret = hdrv->probe(hdev, id); 1483 } else { /* default probe */ 1484 ret = hid_parse(hdev); 1485 if (!ret) 1486 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1487 } 1488 if (ret) 1489 hdev->driver = NULL; 1490 } 1491 return ret; 1492} 1493 1494static int hid_device_remove(struct device *dev) 1495{ 1496 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 1497 struct hid_driver *hdrv = hdev->driver; 1498 1499 if (hdrv) { 1500 if (hdrv->remove) 1501 hdrv->remove(hdev); 1502 else /* default remove */ 1503 hid_hw_stop(hdev); 1504 hdev->driver = NULL; 1505 } 1506 1507 return 0; 1508} 1509 1510static int hid_uevent(struct device *dev, struct kobj_uevent_env *env) 1511{ 1512 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 1513 1514 if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X", 1515 hdev->bus, hdev->vendor, hdev->product)) 1516 return -ENOMEM; 1517 1518 if (add_uevent_var(env, "HID_NAME=%s", hdev->name)) 1519 return -ENOMEM; 1520 1521 if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys)) 1522 return -ENOMEM; 1523 1524 if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq)) 1525 return -ENOMEM; 1526 1527 if (add_uevent_var(env, "MODALIAS=hid:b%04Xv%08Xp%08X", 1528 hdev->bus, hdev->vendor, hdev->product)) 1529 return -ENOMEM; 1530 1531 return 0; 1532} 1533 1534static struct bus_type hid_bus_type = { 1535 .name = "hid", 1536 .match = hid_bus_match, 1537 .probe = hid_device_probe, 1538 .remove = hid_device_remove, 1539 .uevent = hid_uevent, 1540}; 1541 1542/* a list of devices that shouldn't be handled by HID core at all */ 1543static const struct hid_device_id hid_ignore_list[] = { 1544 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) }, 1545 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) }, 1546 { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) }, 1547 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) }, 1548 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) }, 1549 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) }, 1550 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) }, 1551 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) }, 1552 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) }, 1553 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) }, 1554 { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) }, 1555 { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) }, 1556 { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_T91MT)}, 1557 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)}, 1558 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)}, 1559 { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) }, 1560 { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) }, 1561 { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) }, 1562 { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) }, 1563 { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) }, 1564 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) }, 1565 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) }, 1566 { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) }, 1567 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) }, 1568 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) }, 1569 { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) }, 1570 { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) }, 1571 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) }, 1572 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) }, 1573 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0003) }, 1574 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) }, 1575 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) }, 1576 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) }, 1577 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) }, 1578 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) }, 1579 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) }, 1580 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) }, 1581 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) }, 1582 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) }, 1583 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) }, 1584 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) }, 1585 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) }, 1586 { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) }, 1587 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) }, 1588 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) }, 1589 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) }, 1590 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) }, 1591 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) }, 1592 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) }, 1593 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) }, 1594 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) }, 1595 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) }, 1596 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) }, 1597 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) }, 1598 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) }, 1599 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) }, 1600 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) }, 1601 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) }, 1602 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) }, 1603 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) }, 1604 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) }, 1605 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) }, 1606 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) }, 1607 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) }, 1608 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) }, 1609 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) }, 1610 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) }, 1611 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) }, 1612 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) }, 1613 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) }, 1614 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) }, 1615 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) }, 1616 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) }, 1617 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) }, 1618 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) }, 1619 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) }, 1620 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) }, 1621 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) }, 1622 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) }, 1623 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) }, 1624 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) }, 1625 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) }, 1626 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) }, 1627 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) }, 1628 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) }, 1629 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) }, 1630 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) }, 1631 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) }, 1632 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) }, 1633 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) }, 1634 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) }, 1635 { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) }, 1636 { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) }, 1637 { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) }, 1638 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) }, 1639 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) }, 1640 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) }, 1641 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) }, 1642 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) }, 1643 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) }, 1644 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) }, 1645 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) }, 1646 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY1) }, 1647 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) }, 1648 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) }, 1649 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) }, 1650 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) }, 1651 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) }, 1652 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) }, 1653 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) }, 1654 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) }, 1655 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) }, 1656 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) }, 1657 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) }, 1658 { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) }, 1659 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) }, 1660 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) }, 1661 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) }, 1662 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) }, 1663 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) }, 1664 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) }, 1665 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) }, 1666 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) }, 1667 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) }, 1668 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) }, 1669 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) }, 1670 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) }, 1671 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) }, 1672 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) }, 1673 { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) }, 1674 { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) }, 1675 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) }, 1676 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) }, 1677 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) }, 1678 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) }, 1679 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) }, 1680 { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) }, 1681 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) }, 1682 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) }, 1683 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) }, 1684 { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) }, 1685 { } 1686}; 1687 1688/** 1689 * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer 1690 * 1691 * There are composite devices for which we want to ignore only a certain 1692 * interface. This is a list of devices for which only the mouse interface will 1693 * be ignored. This allows a dedicated driver to take care of the interface. 1694 */ 1695static const struct hid_device_id hid_mouse_ignore_list[] = { 1696 /* appletouch driver */ 1697 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) }, 1698 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) }, 1699 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) }, 1700 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) }, 1701 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) }, 1702 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) }, 1703 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) }, 1704 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) }, 1705 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) }, 1706 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) }, 1707 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) }, 1708 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) }, 1709 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) }, 1710 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) }, 1711 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) }, 1712 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) }, 1713 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) }, 1714 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) }, 1715 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) }, 1716 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) }, 1717 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) }, 1718 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) }, 1719 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) }, 1720 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) }, 1721 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) }, 1722 { } 1723}; 1724 1725static bool hid_ignore(struct hid_device *hdev) 1726{ 1727 switch (hdev->vendor) { 1728 case USB_VENDOR_ID_CODEMERCS: 1729 /* ignore all Code Mercenaries IOWarrior devices */ 1730 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST && 1731 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST) 1732 return true; 1733 break; 1734 case USB_VENDOR_ID_LOGITECH: 1735 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST && 1736 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST) 1737 return true; 1738 break; 1739 case USB_VENDOR_ID_SOUNDGRAPH: 1740 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST && 1741 hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST) 1742 return true; 1743 break; 1744 } 1745 1746 if (hdev->type == HID_TYPE_USBMOUSE && 1747 hid_match_id(hdev, hid_mouse_ignore_list)) 1748 return true; 1749 1750 return !!hid_match_id(hdev, hid_ignore_list); 1751} 1752 1753int hid_add_device(struct hid_device *hdev) 1754{ 1755 static atomic_t id = ATOMIC_INIT(0); 1756 int ret; 1757 1758 if (WARN_ON(hdev->status & HID_STAT_ADDED)) 1759 return -EBUSY; 1760 1761 /* we need to kill them here, otherwise they will stay allocated to 1762 * wait for coming driver */ 1763 if (!(hdev->quirks & HID_QUIRK_NO_IGNORE) && hid_ignore(hdev)) 1764 return -ENODEV; 1765 1766 /* XXX hack, any other cleaner solution after the driver core 1767 * is converted to allow more than 20 bytes as the device name? */ 1768 dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus, 1769 hdev->vendor, hdev->product, atomic_inc_return(&id)); 1770 1771 hid_debug_register(hdev, dev_name(&hdev->dev)); 1772 ret = device_add(&hdev->dev); 1773 if (!ret) 1774 hdev->status |= HID_STAT_ADDED; 1775 else 1776 hid_debug_unregister(hdev); 1777 1778 return ret; 1779} 1780EXPORT_SYMBOL_GPL(hid_add_device); 1781 1782/** 1783 * hid_allocate_device - allocate new hid device descriptor 1784 * 1785 * Allocate and initialize hid device, so that hid_destroy_device might be 1786 * used to free it. 1787 * 1788 * New hid_device pointer is returned on success, otherwise ERR_PTR encoded 1789 * error value. 1790 */ 1791struct hid_device *hid_allocate_device(void) 1792{ 1793 struct hid_device *hdev; 1794 unsigned int i; 1795 int ret = -ENOMEM; 1796 1797 hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); 1798 if (hdev == NULL) 1799 return ERR_PTR(ret); 1800 1801 device_initialize(&hdev->dev); 1802 hdev->dev.release = hid_device_release; 1803 hdev->dev.bus = &hid_bus_type; 1804 1805 hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS, 1806 sizeof(struct hid_collection), GFP_KERNEL); 1807 if (hdev->collection == NULL) 1808 goto err; 1809 hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS; 1810 1811 for (i = 0; i < HID_REPORT_TYPES; i++) 1812 INIT_LIST_HEAD(&hdev->report_enum[i].report_list); 1813 1814 init_waitqueue_head(&hdev->debug_wait); 1815 INIT_LIST_HEAD(&hdev->debug_list); 1816 1817 return hdev; 1818err: 1819 put_device(&hdev->dev); 1820 return ERR_PTR(ret); 1821} 1822EXPORT_SYMBOL_GPL(hid_allocate_device); 1823 1824static void hid_remove_device(struct hid_device *hdev) 1825{ 1826 if (hdev->status & HID_STAT_ADDED) { 1827 device_del(&hdev->dev); 1828 hid_debug_unregister(hdev); 1829 hdev->status &= ~HID_STAT_ADDED; 1830 } 1831} 1832 1833/** 1834 * hid_destroy_device - free previously allocated device 1835 * 1836 * @hdev: hid device 1837 * 1838 * If you allocate hid_device through hid_allocate_device, you should ever 1839 * free by this function. 1840 */ 1841void hid_destroy_device(struct hid_device *hdev) 1842{ 1843 hid_remove_device(hdev); 1844 put_device(&hdev->dev); 1845} 1846EXPORT_SYMBOL_GPL(hid_destroy_device); 1847 1848int __hid_register_driver(struct hid_driver *hdrv, struct module *owner, 1849 const char *mod_name) 1850{ 1851 int ret; 1852 1853 hdrv->driver.name = hdrv->name; 1854 hdrv->driver.bus = &hid_bus_type; 1855 hdrv->driver.owner = owner; 1856 hdrv->driver.mod_name = mod_name; 1857 1858 INIT_LIST_HEAD(&hdrv->dyn_list); 1859 spin_lock_init(&hdrv->dyn_lock); 1860 1861 ret = driver_register(&hdrv->driver); 1862 if (ret) 1863 return ret; 1864 1865 ret = driver_create_file(&hdrv->driver, &driver_attr_new_id); 1866 if (ret) 1867 driver_unregister(&hdrv->driver); 1868 1869 return ret; 1870} 1871EXPORT_SYMBOL_GPL(__hid_register_driver); 1872 1873void hid_unregister_driver(struct hid_driver *hdrv) 1874{ 1875 driver_remove_file(&hdrv->driver, &driver_attr_new_id); 1876 driver_unregister(&hdrv->driver); 1877 hid_free_dynids(hdrv); 1878} 1879EXPORT_SYMBOL_GPL(hid_unregister_driver); 1880 1881int hid_check_keys_pressed(struct hid_device *hid) 1882{ 1883 struct hid_input *hidinput; 1884 int i; 1885 1886 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1887 return 0; 1888 1889 list_for_each_entry(hidinput, &hid->inputs, list) { 1890 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++) 1891 if (hidinput->input->key[i]) 1892 return 1; 1893 } 1894 1895 return 0; 1896} 1897 1898EXPORT_SYMBOL_GPL(hid_check_keys_pressed); 1899 1900static int __init hid_init(void) 1901{ 1902 int ret; 1903 1904 if (hid_debug) 1905 printk(KERN_WARNING "HID: hid_debug is now used solely for parser and driver debugging.\n" 1906 "HID: debugfs is now used for inspecting the device (report descriptor, reports)\n"); 1907 1908 ret = bus_register(&hid_bus_type); 1909 if (ret) { 1910 printk(KERN_ERR "HID: can't register hid bus\n"); 1911 goto err; 1912 } 1913 1914 ret = hidraw_init(); 1915 if (ret) 1916 goto err_bus; 1917 1918 hid_debug_init(); 1919 1920 return 0; 1921err_bus: 1922 bus_unregister(&hid_bus_type); 1923err: 1924 return ret; 1925} 1926 1927static void __exit hid_exit(void) 1928{ 1929 hid_debug_exit(); 1930 hidraw_exit(); 1931 bus_unregister(&hid_bus_type); 1932} 1933 1934module_init(hid_init); 1935module_exit(hid_exit); 1936 1937MODULE_AUTHOR("Andreas Gal"); 1938MODULE_AUTHOR("Vojtech Pavlik"); 1939MODULE_AUTHOR("Jiri Kosina"); 1940MODULE_LICENSE(DRIVER_LICENSE); 1941 1942