hid-core.c revision 49e4739a0cf681cbfe08c72232c1dcc130b66dde
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) 2006-2007 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 54static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id) 55{ 56 struct hid_report_enum *report_enum = device->report_enum + type; 57 struct hid_report *report; 58 59 if (report_enum->report_id_hash[id]) 60 return report_enum->report_id_hash[id]; 61 62 if (!(report = kzalloc(sizeof(struct hid_report), GFP_KERNEL))) 63 return NULL; 64 65 if (id != 0) 66 report_enum->numbered = 1; 67 68 report->id = id; 69 report->type = type; 70 report->size = 0; 71 report->device = device; 72 report_enum->report_id_hash[id] = report; 73 74 list_add_tail(&report->list, &report_enum->report_list); 75 76 return report; 77} 78 79/* 80 * Register a new field for this report. 81 */ 82 83static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values) 84{ 85 struct hid_field *field; 86 87 if (report->maxfield == HID_MAX_FIELDS) { 88 dbg_hid("too many fields in report\n"); 89 return NULL; 90 } 91 92 if (!(field = kzalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage) 93 + values * sizeof(unsigned), GFP_KERNEL))) return NULL; 94 95 field->index = report->maxfield++; 96 report->field[field->index] = field; 97 field->usage = (struct hid_usage *)(field + 1); 98 field->value = (s32 *)(field->usage + usages); 99 field->report = report; 100 101 return field; 102} 103 104/* 105 * Open a collection. The type/usage is pushed on the stack. 106 */ 107 108static int open_collection(struct hid_parser *parser, unsigned type) 109{ 110 struct hid_collection *collection; 111 unsigned usage; 112 113 usage = parser->local.usage[0]; 114 115 if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) { 116 dbg_hid("collection stack overflow\n"); 117 return -1; 118 } 119 120 if (parser->device->maxcollection == parser->device->collection_size) { 121 collection = kmalloc(sizeof(struct hid_collection) * 122 parser->device->collection_size * 2, GFP_KERNEL); 123 if (collection == NULL) { 124 dbg_hid("failed to reallocate collection array\n"); 125 return -1; 126 } 127 memcpy(collection, parser->device->collection, 128 sizeof(struct hid_collection) * 129 parser->device->collection_size); 130 memset(collection + parser->device->collection_size, 0, 131 sizeof(struct hid_collection) * 132 parser->device->collection_size); 133 kfree(parser->device->collection); 134 parser->device->collection = collection; 135 parser->device->collection_size *= 2; 136 } 137 138 parser->collection_stack[parser->collection_stack_ptr++] = 139 parser->device->maxcollection; 140 141 collection = parser->device->collection + 142 parser->device->maxcollection++; 143 collection->type = type; 144 collection->usage = usage; 145 collection->level = parser->collection_stack_ptr - 1; 146 147 if (type == HID_COLLECTION_APPLICATION) 148 parser->device->maxapplication++; 149 150 return 0; 151} 152 153/* 154 * Close a collection. 155 */ 156 157static int close_collection(struct hid_parser *parser) 158{ 159 if (!parser->collection_stack_ptr) { 160 dbg_hid("collection stack underflow\n"); 161 return -1; 162 } 163 parser->collection_stack_ptr--; 164 return 0; 165} 166 167/* 168 * Climb up the stack, search for the specified collection type 169 * and return the usage. 170 */ 171 172static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type) 173{ 174 int n; 175 for (n = parser->collection_stack_ptr - 1; n >= 0; n--) 176 if (parser->device->collection[parser->collection_stack[n]].type == type) 177 return parser->device->collection[parser->collection_stack[n]].usage; 178 return 0; /* we know nothing about this usage type */ 179} 180 181/* 182 * Add a usage to the temporary parser table. 183 */ 184 185static int hid_add_usage(struct hid_parser *parser, unsigned usage) 186{ 187 if (parser->local.usage_index >= HID_MAX_USAGES) { 188 dbg_hid("usage index exceeded\n"); 189 return -1; 190 } 191 parser->local.usage[parser->local.usage_index] = usage; 192 parser->local.collection_index[parser->local.usage_index] = 193 parser->collection_stack_ptr ? 194 parser->collection_stack[parser->collection_stack_ptr - 1] : 0; 195 parser->local.usage_index++; 196 return 0; 197} 198 199/* 200 * Register a new field for this report. 201 */ 202 203static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags) 204{ 205 struct hid_report *report; 206 struct hid_field *field; 207 int usages; 208 unsigned offset; 209 int i; 210 211 if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) { 212 dbg_hid("hid_register_report failed\n"); 213 return -1; 214 } 215 216 if (parser->global.logical_maximum < parser->global.logical_minimum) { 217 dbg_hid("logical range invalid %d %d\n", parser->global.logical_minimum, parser->global.logical_maximum); 218 return -1; 219 } 220 221 offset = report->size; 222 report->size += parser->global.report_size * parser->global.report_count; 223 224 if (!parser->local.usage_index) /* Ignore padding fields */ 225 return 0; 226 227 usages = max_t(int, parser->local.usage_index, parser->global.report_count); 228 229 if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL) 230 return 0; 231 232 field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL); 233 field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL); 234 field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION); 235 236 for (i = 0; i < usages; i++) { 237 int j = i; 238 /* Duplicate the last usage we parsed if we have excess values */ 239 if (i >= parser->local.usage_index) 240 j = parser->local.usage_index - 1; 241 field->usage[i].hid = parser->local.usage[j]; 242 field->usage[i].collection_index = 243 parser->local.collection_index[j]; 244 } 245 246 field->maxusage = usages; 247 field->flags = flags; 248 field->report_offset = offset; 249 field->report_type = report_type; 250 field->report_size = parser->global.report_size; 251 field->report_count = parser->global.report_count; 252 field->logical_minimum = parser->global.logical_minimum; 253 field->logical_maximum = parser->global.logical_maximum; 254 field->physical_minimum = parser->global.physical_minimum; 255 field->physical_maximum = parser->global.physical_maximum; 256 field->unit_exponent = parser->global.unit_exponent; 257 field->unit = parser->global.unit; 258 259 return 0; 260} 261 262/* 263 * Read data value from item. 264 */ 265 266static u32 item_udata(struct hid_item *item) 267{ 268 switch (item->size) { 269 case 1: return item->data.u8; 270 case 2: return item->data.u16; 271 case 4: return item->data.u32; 272 } 273 return 0; 274} 275 276static s32 item_sdata(struct hid_item *item) 277{ 278 switch (item->size) { 279 case 1: return item->data.s8; 280 case 2: return item->data.s16; 281 case 4: return item->data.s32; 282 } 283 return 0; 284} 285 286/* 287 * Process a global item. 288 */ 289 290static int hid_parser_global(struct hid_parser *parser, struct hid_item *item) 291{ 292 switch (item->tag) { 293 case HID_GLOBAL_ITEM_TAG_PUSH: 294 295 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) { 296 dbg_hid("global enviroment stack overflow\n"); 297 return -1; 298 } 299 300 memcpy(parser->global_stack + parser->global_stack_ptr++, 301 &parser->global, sizeof(struct hid_global)); 302 return 0; 303 304 case HID_GLOBAL_ITEM_TAG_POP: 305 306 if (!parser->global_stack_ptr) { 307 dbg_hid("global enviroment stack underflow\n"); 308 return -1; 309 } 310 311 memcpy(&parser->global, parser->global_stack + 312 --parser->global_stack_ptr, sizeof(struct hid_global)); 313 return 0; 314 315 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE: 316 parser->global.usage_page = item_udata(item); 317 return 0; 318 319 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM: 320 parser->global.logical_minimum = item_sdata(item); 321 return 0; 322 323 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM: 324 if (parser->global.logical_minimum < 0) 325 parser->global.logical_maximum = item_sdata(item); 326 else 327 parser->global.logical_maximum = item_udata(item); 328 return 0; 329 330 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM: 331 parser->global.physical_minimum = item_sdata(item); 332 return 0; 333 334 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM: 335 if (parser->global.physical_minimum < 0) 336 parser->global.physical_maximum = item_sdata(item); 337 else 338 parser->global.physical_maximum = item_udata(item); 339 return 0; 340 341 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT: 342 parser->global.unit_exponent = item_sdata(item); 343 return 0; 344 345 case HID_GLOBAL_ITEM_TAG_UNIT: 346 parser->global.unit = item_udata(item); 347 return 0; 348 349 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE: 350 parser->global.report_size = item_udata(item); 351 if (parser->global.report_size > 32) { 352 dbg_hid("invalid report_size %d\n", 353 parser->global.report_size); 354 return -1; 355 } 356 return 0; 357 358 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT: 359 parser->global.report_count = item_udata(item); 360 if (parser->global.report_count > HID_MAX_USAGES) { 361 dbg_hid("invalid report_count %d\n", 362 parser->global.report_count); 363 return -1; 364 } 365 return 0; 366 367 case HID_GLOBAL_ITEM_TAG_REPORT_ID: 368 parser->global.report_id = item_udata(item); 369 if (parser->global.report_id == 0) { 370 dbg_hid("report_id 0 is invalid\n"); 371 return -1; 372 } 373 return 0; 374 375 default: 376 dbg_hid("unknown global tag 0x%x\n", item->tag); 377 return -1; 378 } 379} 380 381/* 382 * Process a local item. 383 */ 384 385static int hid_parser_local(struct hid_parser *parser, struct hid_item *item) 386{ 387 __u32 data; 388 unsigned n; 389 390 /* Local delimiter could have value 0, which allows size to be 0 */ 391 if (item->size == 0 && item->tag != HID_LOCAL_ITEM_TAG_DELIMITER) { 392 dbg_hid("item data expected for local item\n"); 393 return -1; 394 } 395 396 data = item_udata(item); 397 398 switch (item->tag) { 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_hid("nested delimiters\n"); 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_hid("bogus close delimiter\n"); 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_hid("alternative usage ignored\n"); 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_hid("alternative usage ignored\n"); 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_hid("alternative usage ignored\n"); 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("hid_add_usage failed\n"); 461 return -1; 462 } 463 return 0; 464 465 default: 466 467 dbg_hid("unknown local item tag 0x%x\n", item->tag); 468 return 0; 469 } 470 return 0; 471} 472 473/* 474 * Process a main item. 475 */ 476 477static 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_hid("unknown main item tag 0x%x\n", 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 514static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item) 515{ 516 dbg_hid("reserved item type, tag 0x%x\n", 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 526static 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 539static void hid_device_release(struct device *dev) 540{ 541 struct hid_device *device = container_of(dev, struct hid_device, dev); 542 unsigned i, j; 543 544 for (i = 0; i < HID_REPORT_TYPES; i++) { 545 struct hid_report_enum *report_enum = device->report_enum + i; 546 547 for (j = 0; j < 256; j++) { 548 struct hid_report *report = report_enum->report_id_hash[j]; 549 if (report) 550 hid_free_report(report); 551 } 552 } 553 554 kfree(device->rdesc); 555 kfree(device->collection); 556 kfree(device); 557} 558 559/* 560 * Fetch a report description item from the data stream. We support long 561 * items, though they are not used yet. 562 */ 563 564static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item) 565{ 566 u8 b; 567 568 if ((end - start) <= 0) 569 return NULL; 570 571 b = *start++; 572 573 item->type = (b >> 2) & 3; 574 item->tag = (b >> 4) & 15; 575 576 if (item->tag == HID_ITEM_TAG_LONG) { 577 578 item->format = HID_ITEM_FORMAT_LONG; 579 580 if ((end - start) < 2) 581 return NULL; 582 583 item->size = *start++; 584 item->tag = *start++; 585 586 if ((end - start) < item->size) 587 return NULL; 588 589 item->data.longdata = start; 590 start += item->size; 591 return start; 592 } 593 594 item->format = HID_ITEM_FORMAT_SHORT; 595 item->size = b & 3; 596 597 switch (item->size) { 598 case 0: 599 return start; 600 601 case 1: 602 if ((end - start) < 1) 603 return NULL; 604 item->data.u8 = *start++; 605 return start; 606 607 case 2: 608 if ((end - start) < 2) 609 return NULL; 610 item->data.u16 = get_unaligned_le16(start); 611 start = (__u8 *)((__le16 *)start + 1); 612 return start; 613 614 case 3: 615 item->size++; 616 if ((end - start) < 4) 617 return NULL; 618 item->data.u32 = get_unaligned_le32(start); 619 start = (__u8 *)((__le32 *)start + 1); 620 return start; 621 } 622 623 return NULL; 624} 625 626/** 627 * hid_parse_report - parse device report 628 * 629 * @device: hid device 630 * @start: report start 631 * @size: report size 632 * 633 * Parse a report description into a hid_device structure. Reports are 634 * enumerated, fields are attached to these reports. 635 * 0 returned on success, otherwise nonzero error value. 636 */ 637int hid_parse_report(struct hid_device *device, __u8 *start, 638 unsigned size) 639{ 640 struct hid_parser *parser; 641 struct hid_item item; 642 __u8 *end; 643 int ret; 644 static int (*dispatch_type[])(struct hid_parser *parser, 645 struct hid_item *item) = { 646 hid_parser_main, 647 hid_parser_global, 648 hid_parser_local, 649 hid_parser_reserved 650 }; 651 652 if (device->driver->report_fixup) 653 device->driver->report_fixup(device, start, size); 654 655 device->rdesc = kmalloc(size, GFP_KERNEL); 656 if (device->rdesc == NULL) 657 return -ENOMEM; 658 memcpy(device->rdesc, start, size); 659 device->rsize = size; 660 661 parser = vmalloc(sizeof(struct hid_parser)); 662 if (!parser) { 663 ret = -ENOMEM; 664 goto err; 665 } 666 667 memset(parser, 0, sizeof(struct hid_parser)); 668 parser->device = device; 669 670 end = start + size; 671 ret = -EINVAL; 672 while ((start = fetch_item(start, end, &item)) != NULL) { 673 674 if (item.format != HID_ITEM_FORMAT_SHORT) { 675 dbg_hid("unexpected long global item\n"); 676 goto err; 677 } 678 679 if (dispatch_type[item.type](parser, &item)) { 680 dbg_hid("item %u %u %u %u parsing failed\n", 681 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag); 682 goto err; 683 } 684 685 if (start == end) { 686 if (parser->collection_stack_ptr) { 687 dbg_hid("unbalanced collection at end of report description\n"); 688 goto err; 689 } 690 if (parser->local.delimiter_depth) { 691 dbg_hid("unbalanced delimiter at end of report description\n"); 692 goto err; 693 } 694 vfree(parser); 695 return 0; 696 } 697 } 698 699 dbg_hid("item fetching failed at offset %d\n", (int)(end - start)); 700err: 701 vfree(parser); 702 return ret; 703} 704EXPORT_SYMBOL_GPL(hid_parse_report); 705 706/* 707 * Convert a signed n-bit integer to signed 32-bit integer. Common 708 * cases are done through the compiler, the screwed things has to be 709 * done by hand. 710 */ 711 712static s32 snto32(__u32 value, unsigned n) 713{ 714 switch (n) { 715 case 8: return ((__s8)value); 716 case 16: return ((__s16)value); 717 case 32: return ((__s32)value); 718 } 719 return value & (1 << (n - 1)) ? value | (-1 << n) : value; 720} 721 722/* 723 * Convert a signed 32-bit integer to a signed n-bit integer. 724 */ 725 726static u32 s32ton(__s32 value, unsigned n) 727{ 728 s32 a = value >> (n - 1); 729 if (a && a != -1) 730 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1; 731 return value & ((1 << n) - 1); 732} 733 734/* 735 * Extract/implement a data field from/to a little endian report (bit array). 736 * 737 * Code sort-of follows HID spec: 738 * http://www.usb.org/developers/devclass_docs/HID1_11.pdf 739 * 740 * While the USB HID spec allows unlimited length bit fields in "report 741 * descriptors", most devices never use more than 16 bits. 742 * One model of UPS is claimed to report "LINEV" as a 32-bit field. 743 * Search linux-kernel and linux-usb-devel archives for "hid-core extract". 744 */ 745 746static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n) 747{ 748 u64 x; 749 750 if (n > 32) 751 printk(KERN_WARNING "HID: extract() called with n (%d) > 32! (%s)\n", 752 n, current->comm); 753 754 report += offset >> 3; /* adjust byte index */ 755 offset &= 7; /* now only need bit offset into one byte */ 756 x = get_unaligned_le64(report); 757 x = (x >> offset) & ((1ULL << n) - 1); /* extract bit field */ 758 return (u32) x; 759} 760 761/* 762 * "implement" : set bits in a little endian bit stream. 763 * Same concepts as "extract" (see comments above). 764 * The data mangled in the bit stream remains in little endian 765 * order the whole time. It make more sense to talk about 766 * endianness of register values by considering a register 767 * a "cached" copy of the little endiad bit stream. 768 */ 769static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value) 770{ 771 u64 x; 772 u64 m = (1ULL << n) - 1; 773 774 if (n > 32) 775 printk(KERN_WARNING "HID: implement() called with n (%d) > 32! (%s)\n", 776 n, current->comm); 777 778 if (value > m) 779 printk(KERN_WARNING "HID: implement() called with too large value %d! (%s)\n", 780 value, current->comm); 781 WARN_ON(value > m); 782 value &= m; 783 784 report += offset >> 3; 785 offset &= 7; 786 787 x = get_unaligned_le64(report); 788 x &= ~(m << offset); 789 x |= ((u64)value) << offset; 790 put_unaligned_le64(x, report); 791} 792 793/* 794 * Search an array for a value. 795 */ 796 797static __inline__ int search(__s32 *array, __s32 value, unsigned n) 798{ 799 while (n--) { 800 if (*array++ == value) 801 return 0; 802 } 803 return -1; 804} 805 806/** 807 * hid_match_report - check if driver's raw_event should be called 808 * 809 * @hid: hid device 810 * @report_type: type to match against 811 * 812 * compare hid->driver->report_table->report_type to report->type 813 */ 814static int hid_match_report(struct hid_device *hid, struct hid_report *report) 815{ 816 const struct hid_report_id *id = hid->driver->report_table; 817 818 if (!id) /* NULL means all */ 819 return 1; 820 821 for (; id->report_type != HID_TERMINATOR; id++) 822 if (id->report_type == HID_ANY_ID || 823 id->report_type == report->type) 824 return 1; 825 return 0; 826} 827 828/** 829 * hid_match_usage - check if driver's event should be called 830 * 831 * @hid: hid device 832 * @usage: usage to match against 833 * 834 * compare hid->driver->usage_table->usage_{type,code} to 835 * usage->usage_{type,code} 836 */ 837static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage) 838{ 839 const struct hid_usage_id *id = hid->driver->usage_table; 840 841 if (!id) /* NULL means all */ 842 return 1; 843 844 for (; id->usage_type != HID_ANY_ID - 1; id++) 845 if ((id->usage_hid == HID_ANY_ID || 846 id->usage_hid == usage->hid) && 847 (id->usage_type == HID_ANY_ID || 848 id->usage_type == usage->type) && 849 (id->usage_code == HID_ANY_ID || 850 id->usage_code == usage->code)) 851 return 1; 852 return 0; 853} 854 855static void hid_process_event(struct hid_device *hid, struct hid_field *field, 856 struct hid_usage *usage, __s32 value, int interrupt) 857{ 858 struct hid_driver *hdrv = hid->driver; 859 int ret; 860 861 hid_dump_input(hid, usage, value); 862 863 if (hdrv && hdrv->event && hid_match_usage(hid, usage)) { 864 ret = hdrv->event(hid, field, usage, value); 865 if (ret != 0) { 866 if (ret < 0) 867 dbg_hid("%s's event failed with %d\n", 868 hdrv->name, ret); 869 return; 870 } 871 } 872 873 if (hid->claimed & HID_CLAIMED_INPUT) 874 hidinput_hid_event(hid, field, usage, value); 875 if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event) 876 hid->hiddev_hid_event(hid, field, usage, value); 877} 878 879/* 880 * Analyse a received field, and fetch the data from it. The field 881 * content is stored for next report processing (we do differential 882 * reporting to the layer). 883 */ 884 885static void hid_input_field(struct hid_device *hid, struct hid_field *field, 886 __u8 *data, int interrupt) 887{ 888 unsigned n; 889 unsigned count = field->report_count; 890 unsigned offset = field->report_offset; 891 unsigned size = field->report_size; 892 __s32 min = field->logical_minimum; 893 __s32 max = field->logical_maximum; 894 __s32 *value; 895 896 if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC))) 897 return; 898 899 for (n = 0; n < count; n++) { 900 901 value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) : 902 extract(data, offset + n * size, size); 903 904 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */ 905 && value[n] >= min && value[n] <= max 906 && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1) 907 goto exit; 908 } 909 910 for (n = 0; n < count; n++) { 911 912 if (HID_MAIN_ITEM_VARIABLE & field->flags) { 913 hid_process_event(hid, field, &field->usage[n], value[n], interrupt); 914 continue; 915 } 916 917 if (field->value[n] >= min && field->value[n] <= max 918 && field->usage[field->value[n] - min].hid 919 && search(value, field->value[n], count)) 920 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt); 921 922 if (value[n] >= min && value[n] <= max 923 && field->usage[value[n] - min].hid 924 && search(field->value, value[n], count)) 925 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt); 926 } 927 928 memcpy(field->value, value, count * sizeof(__s32)); 929exit: 930 kfree(value); 931} 932 933/* 934 * Output the field into the report. 935 */ 936 937static void hid_output_field(struct hid_field *field, __u8 *data) 938{ 939 unsigned count = field->report_count; 940 unsigned offset = field->report_offset; 941 unsigned size = field->report_size; 942 unsigned bitsused = offset + count * size; 943 unsigned n; 944 945 /* make sure the unused bits in the last byte are zeros */ 946 if (count > 0 && size > 0 && (bitsused % 8) != 0) 947 data[(bitsused-1)/8] &= (1 << (bitsused % 8)) - 1; 948 949 for (n = 0; n < count; n++) { 950 if (field->logical_minimum < 0) /* signed values */ 951 implement(data, offset + n * size, size, s32ton(field->value[n], size)); 952 else /* unsigned values */ 953 implement(data, offset + n * size, size, field->value[n]); 954 } 955} 956 957/* 958 * Create a report. 959 */ 960 961void hid_output_report(struct hid_report *report, __u8 *data) 962{ 963 unsigned n; 964 965 if (report->id > 0) 966 *data++ = report->id; 967 968 for (n = 0; n < report->maxfield; n++) 969 hid_output_field(report->field[n], data); 970} 971EXPORT_SYMBOL_GPL(hid_output_report); 972 973/* 974 * Set a field value. The report this field belongs to has to be 975 * created and transferred to the device, to set this value in the 976 * device. 977 */ 978 979int hid_set_field(struct hid_field *field, unsigned offset, __s32 value) 980{ 981 unsigned size = field->report_size; 982 983 hid_dump_input(field->report->device, field->usage + offset, value); 984 985 if (offset >= field->report_count) { 986 dbg_hid("offset (%d) exceeds report_count (%d)\n", offset, field->report_count); 987 return -1; 988 } 989 if (field->logical_minimum < 0) { 990 if (value != snto32(s32ton(value, size), size)) { 991 dbg_hid("value %d is out of range\n", value); 992 return -1; 993 } 994 } 995 field->value[offset] = value; 996 return 0; 997} 998EXPORT_SYMBOL_GPL(hid_set_field); 999 1000static struct hid_report *hid_get_report(struct hid_report_enum *report_enum, 1001 const u8 *data) 1002{ 1003 struct hid_report *report; 1004 unsigned int n = 0; /* Normally report number is 0 */ 1005 1006 /* Device uses numbered reports, data[0] is report number */ 1007 if (report_enum->numbered) 1008 n = *data; 1009 1010 report = report_enum->report_id_hash[n]; 1011 if (report == NULL) 1012 dbg_hid("undefined report_id %u received\n", n); 1013 1014 return report; 1015} 1016 1017void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, 1018 int interrupt) 1019{ 1020 struct hid_report_enum *report_enum = hid->report_enum + type; 1021 struct hid_report *report; 1022 unsigned int a; 1023 int rsize, csize = size; 1024 u8 *cdata = data; 1025 1026 report = hid_get_report(report_enum, data); 1027 if (!report) 1028 return; 1029 1030 if (report_enum->numbered) { 1031 cdata++; 1032 csize--; 1033 } 1034 1035 rsize = ((report->size - 1) >> 3) + 1; 1036 1037 if (csize < rsize) { 1038 dbg_hid("report %d is too short, (%d < %d)\n", report->id, 1039 csize, rsize); 1040 memset(cdata + csize, 0, rsize - csize); 1041 } 1042 1043 if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event) 1044 hid->hiddev_report_event(hid, report); 1045 if (hid->claimed & HID_CLAIMED_HIDRAW) { 1046 /* numbered reports need to be passed with the report num */ 1047 if (report_enum->numbered) 1048 hidraw_report_event(hid, data - 1, size + 1); 1049 else 1050 hidraw_report_event(hid, data, size); 1051 } 1052 1053 for (a = 0; a < report->maxfield; a++) 1054 hid_input_field(hid, report->field[a], cdata, interrupt); 1055 1056 if (hid->claimed & HID_CLAIMED_INPUT) 1057 hidinput_report_event(hid, report); 1058} 1059EXPORT_SYMBOL_GPL(hid_report_raw_event); 1060 1061/** 1062 * hid_input_report - report data from lower layer (usb, bt...) 1063 * 1064 * @hid: hid device 1065 * @type: HID report type (HID_*_REPORT) 1066 * @data: report contents 1067 * @size: size of data parameter 1068 * @interrupt: distinguish between interrupt and control transfers 1069 * 1070 * This is data entry for lower layers. 1071 */ 1072int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt) 1073{ 1074 struct hid_report_enum *report_enum; 1075 struct hid_driver *hdrv; 1076 struct hid_report *report; 1077 char *buf; 1078 unsigned int i; 1079 int ret; 1080 1081 if (!hid || !hid->driver) 1082 return -ENODEV; 1083 report_enum = hid->report_enum + type; 1084 hdrv = hid->driver; 1085 1086 if (!size) { 1087 dbg_hid("empty report\n"); 1088 return -1; 1089 } 1090 1091 buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC); 1092 1093 if (!buf) { 1094 report = hid_get_report(report_enum, data); 1095 goto nomem; 1096 } 1097 1098 snprintf(buf, HID_DEBUG_BUFSIZE - 1, 1099 "\nreport (size %u) (%snumbered)\n", size, report_enum->numbered ? "" : "un"); 1100 hid_debug_event(hid, buf); 1101 1102 report = hid_get_report(report_enum, data); 1103 if (!report) { 1104 kfree(buf); 1105 return -1; 1106 } 1107 1108 /* dump the report */ 1109 snprintf(buf, HID_DEBUG_BUFSIZE - 1, 1110 "report %d (size %u) = ", report->id, size); 1111 hid_debug_event(hid, buf); 1112 for (i = 0; i < size; i++) { 1113 snprintf(buf, HID_DEBUG_BUFSIZE - 1, 1114 " %02x", data[i]); 1115 hid_debug_event(hid, buf); 1116 } 1117 hid_debug_event(hid, "\n"); 1118 1119 kfree(buf); 1120 1121nomem: 1122 if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) { 1123 ret = hdrv->raw_event(hid, report, data, size); 1124 if (ret != 0) 1125 return ret < 0 ? ret : 0; 1126 } 1127 1128 hid_report_raw_event(hid, type, data, size, interrupt); 1129 1130 return 0; 1131} 1132EXPORT_SYMBOL_GPL(hid_input_report); 1133 1134static bool hid_match_one_id(struct hid_device *hdev, 1135 const struct hid_device_id *id) 1136{ 1137 return id->bus == hdev->bus && 1138 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) && 1139 (id->product == HID_ANY_ID || id->product == hdev->product); 1140} 1141 1142static const struct hid_device_id *hid_match_id(struct hid_device *hdev, 1143 const struct hid_device_id *id) 1144{ 1145 for (; id->bus; id++) 1146 if (hid_match_one_id(hdev, id)) 1147 return id; 1148 1149 return NULL; 1150} 1151 1152static const struct hid_device_id hid_hiddev_list[] = { 1153 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) }, 1154 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) }, 1155 { } 1156}; 1157 1158static bool hid_hiddev(struct hid_device *hdev) 1159{ 1160 return !!hid_match_id(hdev, hid_hiddev_list); 1161} 1162 1163int hid_connect(struct hid_device *hdev, unsigned int connect_mask) 1164{ 1165 static const char *types[] = { "Device", "Pointer", "Mouse", "Device", 1166 "Joystick", "Gamepad", "Keyboard", "Keypad", 1167 "Multi-Axis Controller" 1168 }; 1169 const char *type, *bus; 1170 char buf[64]; 1171 unsigned int i; 1172 int len; 1173 1174 if (hdev->bus != BUS_USB) 1175 connect_mask &= ~HID_CONNECT_HIDDEV; 1176 if (hid_hiddev(hdev)) 1177 connect_mask |= HID_CONNECT_HIDDEV_FORCE; 1178 1179 if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev, 1180 connect_mask & HID_CONNECT_HIDINPUT_FORCE)) 1181 hdev->claimed |= HID_CLAIMED_INPUT; 1182 if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect && 1183 !hdev->hiddev_connect(hdev, 1184 connect_mask & HID_CONNECT_HIDDEV_FORCE)) 1185 hdev->claimed |= HID_CLAIMED_HIDDEV; 1186 if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev)) 1187 hdev->claimed |= HID_CLAIMED_HIDRAW; 1188 1189 if (!hdev->claimed) { 1190 dev_err(&hdev->dev, "claimed by neither input, hiddev nor " 1191 "hidraw\n"); 1192 return -ENODEV; 1193 } 1194 1195 if ((hdev->claimed & HID_CLAIMED_INPUT) && 1196 (connect_mask & HID_CONNECT_FF) && hdev->ff_init) 1197 hdev->ff_init(hdev); 1198 1199 len = 0; 1200 if (hdev->claimed & HID_CLAIMED_INPUT) 1201 len += sprintf(buf + len, "input"); 1202 if (hdev->claimed & HID_CLAIMED_HIDDEV) 1203 len += sprintf(buf + len, "%shiddev%d", len ? "," : "", 1204 hdev->minor); 1205 if (hdev->claimed & HID_CLAIMED_HIDRAW) 1206 len += sprintf(buf + len, "%shidraw%d", len ? "," : "", 1207 ((struct hidraw *)hdev->hidraw)->minor); 1208 1209 type = "Device"; 1210 for (i = 0; i < hdev->maxcollection; i++) { 1211 struct hid_collection *col = &hdev->collection[i]; 1212 if (col->type == HID_COLLECTION_APPLICATION && 1213 (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK && 1214 (col->usage & 0xffff) < ARRAY_SIZE(types)) { 1215 type = types[col->usage & 0xffff]; 1216 break; 1217 } 1218 } 1219 1220 switch (hdev->bus) { 1221 case BUS_USB: 1222 bus = "USB"; 1223 break; 1224 case BUS_BLUETOOTH: 1225 bus = "BLUETOOTH"; 1226 break; 1227 default: 1228 bus = "<UNKNOWN>"; 1229 } 1230 1231 dev_info(&hdev->dev, "%s: %s HID v%x.%02x %s [%s] on %s\n", 1232 buf, bus, hdev->version >> 8, hdev->version & 0xff, 1233 type, hdev->name, hdev->phys); 1234 1235 return 0; 1236} 1237EXPORT_SYMBOL_GPL(hid_connect); 1238 1239void hid_disconnect(struct hid_device *hdev) 1240{ 1241 if (hdev->claimed & HID_CLAIMED_INPUT) 1242 hidinput_disconnect(hdev); 1243 if (hdev->claimed & HID_CLAIMED_HIDDEV) 1244 hdev->hiddev_disconnect(hdev); 1245 if (hdev->claimed & HID_CLAIMED_HIDRAW) 1246 hidraw_disconnect(hdev); 1247} 1248EXPORT_SYMBOL_GPL(hid_disconnect); 1249 1250/* a list of devices for which there is a specialized driver on HID bus */ 1251static const struct hid_device_id hid_blacklist[] = { 1252 { HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M1968) }, 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_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) }, 1259 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) }, 1260 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) }, 1261 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) }, 1262 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) }, 1263 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) }, 1264 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) }, 1265 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) }, 1266 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) }, 1267 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) }, 1268 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) }, 1269 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) }, 1270 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) }, 1271 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) }, 1272 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) }, 1273 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) }, 1274 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) }, 1275 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) }, 1276 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) }, 1277 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) }, 1278 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) }, 1279 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) }, 1280 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) }, 1281 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) }, 1282 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) }, 1283 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) }, 1284 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) }, 1285 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) }, 1286 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) }, 1287 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) }, 1288 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) }, 1289 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) }, 1290 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) }, 1291 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) }, 1292 { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) }, 1293 { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) }, 1294 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) }, 1295 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) }, 1296 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) }, 1297 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) }, 1298 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) }, 1299 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) }, 1300 { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) }, 1301 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) }, 1302 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) }, 1303 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) }, 1304 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) }, 1305 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) }, 1306 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) }, 1307 { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) }, 1308 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) }, 1309 { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) }, 1310 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) }, 1311 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) }, 1312 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) }, 1313 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) }, 1314 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) }, 1315 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) }, 1316 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) }, 1317 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) }, 1318 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) }, 1319 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) }, 1320 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) }, 1321 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) }, 1322 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) }, 1323 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) }, 1324 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) }, 1325 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) }, 1326 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) }, 1327 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) }, 1328 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) }, 1329 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) }, 1330 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) }, 1331 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) }, 1332 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) }, 1333 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) }, 1334 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) }, 1335 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) }, 1336 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) }, 1337 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) }, 1338 { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) }, 1339 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) }, 1340 { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) }, 1341 { HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) }, 1342 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) }, 1343 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) }, 1344 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) }, 1345 { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, USB_DEVICE_ID_MTP) }, 1346 { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) }, 1347 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) }, 1348 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) }, 1349 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) }, 1350 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) }, 1351 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) }, 1352 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) }, 1353 { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) }, 1354 { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) }, 1355 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) }, 1356 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) }, 1357 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) }, 1358 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) }, 1359 1360 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) }, 1361 { } 1362}; 1363 1364struct hid_dynid { 1365 struct list_head list; 1366 struct hid_device_id id; 1367}; 1368 1369/** 1370 * store_new_id - add a new HID device ID to this driver and re-probe devices 1371 * @driver: target device driver 1372 * @buf: buffer for scanning device ID data 1373 * @count: input size 1374 * 1375 * Adds a new dynamic hid device ID to this driver, 1376 * and causes the driver to probe for all devices again. 1377 */ 1378static ssize_t store_new_id(struct device_driver *drv, const char *buf, 1379 size_t count) 1380{ 1381 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver); 1382 struct hid_dynid *dynid; 1383 __u32 bus, vendor, product; 1384 unsigned long driver_data = 0; 1385 int ret; 1386 1387 ret = sscanf(buf, "%x %x %x %lx", 1388 &bus, &vendor, &product, &driver_data); 1389 if (ret < 3) 1390 return -EINVAL; 1391 1392 dynid = kzalloc(sizeof(*dynid), GFP_KERNEL); 1393 if (!dynid) 1394 return -ENOMEM; 1395 1396 dynid->id.bus = bus; 1397 dynid->id.vendor = vendor; 1398 dynid->id.product = product; 1399 dynid->id.driver_data = driver_data; 1400 1401 spin_lock(&hdrv->dyn_lock); 1402 list_add_tail(&dynid->list, &hdrv->dyn_list); 1403 spin_unlock(&hdrv->dyn_lock); 1404 1405 ret = 0; 1406 if (get_driver(&hdrv->driver)) { 1407 ret = driver_attach(&hdrv->driver); 1408 put_driver(&hdrv->driver); 1409 } 1410 1411 return ret ? : count; 1412} 1413static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id); 1414 1415static void hid_free_dynids(struct hid_driver *hdrv) 1416{ 1417 struct hid_dynid *dynid, *n; 1418 1419 spin_lock(&hdrv->dyn_lock); 1420 list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) { 1421 list_del(&dynid->list); 1422 kfree(dynid); 1423 } 1424 spin_unlock(&hdrv->dyn_lock); 1425} 1426 1427static const struct hid_device_id *hid_match_device(struct hid_device *hdev, 1428 struct hid_driver *hdrv) 1429{ 1430 struct hid_dynid *dynid; 1431 1432 spin_lock(&hdrv->dyn_lock); 1433 list_for_each_entry(dynid, &hdrv->dyn_list, list) { 1434 if (hid_match_one_id(hdev, &dynid->id)) { 1435 spin_unlock(&hdrv->dyn_lock); 1436 return &dynid->id; 1437 } 1438 } 1439 spin_unlock(&hdrv->dyn_lock); 1440 1441 return hid_match_id(hdev, hdrv->id_table); 1442} 1443 1444static int hid_bus_match(struct device *dev, struct device_driver *drv) 1445{ 1446 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver); 1447 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 1448 1449 if (!hid_match_device(hdev, hdrv)) 1450 return 0; 1451 1452 /* generic wants all non-blacklisted */ 1453 if (!strncmp(hdrv->name, "generic-", 8)) 1454 return !hid_match_id(hdev, hid_blacklist); 1455 1456 return 1; 1457} 1458 1459static int hid_device_probe(struct device *dev) 1460{ 1461 struct hid_driver *hdrv = container_of(dev->driver, 1462 struct hid_driver, driver); 1463 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 1464 const struct hid_device_id *id; 1465 int ret = 0; 1466 1467 if (!hdev->driver) { 1468 id = hid_match_device(hdev, hdrv); 1469 if (id == NULL) 1470 return -ENODEV; 1471 1472 hdev->driver = hdrv; 1473 if (hdrv->probe) { 1474 ret = hdrv->probe(hdev, id); 1475 } else { /* default probe */ 1476 ret = hid_parse(hdev); 1477 if (!ret) 1478 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1479 } 1480 if (ret) 1481 hdev->driver = NULL; 1482 } 1483 return ret; 1484} 1485 1486static int hid_device_remove(struct device *dev) 1487{ 1488 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 1489 struct hid_driver *hdrv = hdev->driver; 1490 1491 if (hdrv) { 1492 if (hdrv->remove) 1493 hdrv->remove(hdev); 1494 else /* default remove */ 1495 hid_hw_stop(hdev); 1496 hdev->driver = NULL; 1497 } 1498 1499 return 0; 1500} 1501 1502static int hid_uevent(struct device *dev, struct kobj_uevent_env *env) 1503{ 1504 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 1505 1506 if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X", 1507 hdev->bus, hdev->vendor, hdev->product)) 1508 return -ENOMEM; 1509 1510 if (add_uevent_var(env, "HID_NAME=%s", hdev->name)) 1511 return -ENOMEM; 1512 1513 if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys)) 1514 return -ENOMEM; 1515 1516 if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq)) 1517 return -ENOMEM; 1518 1519 if (add_uevent_var(env, "MODALIAS=hid:b%04Xv%08Xp%08X", 1520 hdev->bus, hdev->vendor, hdev->product)) 1521 return -ENOMEM; 1522 1523 return 0; 1524} 1525 1526static struct bus_type hid_bus_type = { 1527 .name = "hid", 1528 .match = hid_bus_match, 1529 .probe = hid_device_probe, 1530 .remove = hid_device_remove, 1531 .uevent = hid_uevent, 1532}; 1533 1534/* a list of devices that shouldn't be handled by HID core at all */ 1535static const struct hid_device_id hid_ignore_list[] = { 1536 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) }, 1537 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) }, 1538 { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) }, 1539 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) }, 1540 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) }, 1541 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) }, 1542 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) }, 1543 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) }, 1544 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) }, 1545 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) }, 1546 { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) }, 1547 { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) }, 1548 { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM)}, 1549 { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM2)}, 1550 { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) }, 1551 { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) }, 1552 { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) }, 1553 { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) }, 1554 { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) }, 1555 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) }, 1556 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) }, 1557 { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) }, 1558 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) }, 1559 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) }, 1560 { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) }, 1561 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) }, 1562 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) }, 1563 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0003) }, 1564 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) }, 1565 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) }, 1566 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) }, 1567 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) }, 1568 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) }, 1569 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) }, 1570 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) }, 1571 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) }, 1572 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) }, 1573 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) }, 1574 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) }, 1575 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) }, 1576 { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) }, 1577 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) }, 1578 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) }, 1579 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) }, 1580 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) }, 1581 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) }, 1582 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) }, 1583 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) }, 1584 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) }, 1585 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) }, 1586 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) }, 1587 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) }, 1588 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) }, 1589 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) }, 1590 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) }, 1591 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) }, 1592 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) }, 1593 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) }, 1594 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) }, 1595 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) }, 1596 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) }, 1597 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) }, 1598 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) }, 1599 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) }, 1600 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) }, 1601 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) }, 1602 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) }, 1603 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) }, 1604 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) }, 1605 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) }, 1606 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) }, 1607 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) }, 1608 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) }, 1609 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) }, 1610 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) }, 1611 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) }, 1612 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) }, 1613 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) }, 1614 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) }, 1615 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) }, 1616 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) }, 1617 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) }, 1618 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) }, 1619 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) }, 1620 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) }, 1621 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) }, 1622 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) }, 1623 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) }, 1624 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) }, 1625 { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) }, 1626 { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) }, 1627 { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) }, 1628 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) }, 1629 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) }, 1630 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) }, 1631 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) }, 1632 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) }, 1633 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) }, 1634 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) }, 1635 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) }, 1636 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY1) }, 1637 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) }, 1638 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) }, 1639 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) }, 1640 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) }, 1641 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) }, 1642 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) }, 1643 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) }, 1644 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) }, 1645 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) }, 1646 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) }, 1647 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) }, 1648 { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) }, 1649 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) }, 1650 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) }, 1651 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) }, 1652 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) }, 1653 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) }, 1654 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) }, 1655 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) }, 1656 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) }, 1657 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) }, 1658 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) }, 1659 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) }, 1660 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) }, 1661 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) }, 1662 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) }, 1663 { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) }, 1664 { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) }, 1665 { HID_USB_DEVICE(USB_VENDOR_ID_TENX, USB_DEVICE_ID_TENX_IBUDDY1) }, 1666 { HID_USB_DEVICE(USB_VENDOR_ID_TENX, USB_DEVICE_ID_TENX_IBUDDY2) }, 1667 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) }, 1668 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) }, 1669 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) }, 1670 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) }, 1671 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) }, 1672 { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) }, 1673 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) }, 1674 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) }, 1675 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) }, 1676 { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) }, 1677 { } 1678}; 1679 1680/** 1681 * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer 1682 * 1683 * There are composite devices for which we want to ignore only a certain 1684 * interface. This is a list of devices for which only the mouse interface will 1685 * be ignored. This allows a dedicated driver to take care of the interface. 1686 */ 1687static const struct hid_device_id hid_mouse_ignore_list[] = { 1688 /* appletouch driver */ 1689 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) }, 1690 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) }, 1691 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) }, 1692 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) }, 1693 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) }, 1694 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) }, 1695 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) }, 1696 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) }, 1697 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) }, 1698 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) }, 1699 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) }, 1700 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) }, 1701 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) }, 1702 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) }, 1703 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) }, 1704 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) }, 1705 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) }, 1706 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) }, 1707 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) }, 1708 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) }, 1709 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) }, 1710 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) }, 1711 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) }, 1712 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) }, 1713 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) }, 1714 { } 1715}; 1716 1717static bool hid_ignore(struct hid_device *hdev) 1718{ 1719 switch (hdev->vendor) { 1720 case USB_VENDOR_ID_CODEMERCS: 1721 /* ignore all Code Mercenaries IOWarrior devices */ 1722 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST && 1723 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST) 1724 return true; 1725 break; 1726 case USB_VENDOR_ID_LOGITECH: 1727 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST && 1728 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST) 1729 return true; 1730 break; 1731 case USB_VENDOR_ID_SOUNDGRAPH: 1732 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST && 1733 hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST) 1734 return true; 1735 break; 1736 } 1737 1738 if (hdev->type == HID_TYPE_USBMOUSE && 1739 hid_match_id(hdev, hid_mouse_ignore_list)) 1740 return true; 1741 1742 return !!hid_match_id(hdev, hid_ignore_list); 1743} 1744 1745int hid_add_device(struct hid_device *hdev) 1746{ 1747 static atomic_t id = ATOMIC_INIT(0); 1748 int ret; 1749 1750 if (WARN_ON(hdev->status & HID_STAT_ADDED)) 1751 return -EBUSY; 1752 1753 /* we need to kill them here, otherwise they will stay allocated to 1754 * wait for coming driver */ 1755 if (hid_ignore(hdev)) 1756 return -ENODEV; 1757 1758 /* XXX hack, any other cleaner solution after the driver core 1759 * is converted to allow more than 20 bytes as the device name? */ 1760 dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus, 1761 hdev->vendor, hdev->product, atomic_inc_return(&id)); 1762 1763 ret = device_add(&hdev->dev); 1764 if (!ret) 1765 hdev->status |= HID_STAT_ADDED; 1766 1767 hid_debug_register(hdev, dev_name(&hdev->dev)); 1768 1769 return ret; 1770} 1771EXPORT_SYMBOL_GPL(hid_add_device); 1772 1773/** 1774 * hid_allocate_device - allocate new hid device descriptor 1775 * 1776 * Allocate and initialize hid device, so that hid_destroy_device might be 1777 * used to free it. 1778 * 1779 * New hid_device pointer is returned on success, otherwise ERR_PTR encoded 1780 * error value. 1781 */ 1782struct hid_device *hid_allocate_device(void) 1783{ 1784 struct hid_device *hdev; 1785 unsigned int i; 1786 int ret = -ENOMEM; 1787 1788 hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); 1789 if (hdev == NULL) 1790 return ERR_PTR(ret); 1791 1792 device_initialize(&hdev->dev); 1793 hdev->dev.release = hid_device_release; 1794 hdev->dev.bus = &hid_bus_type; 1795 1796 hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS, 1797 sizeof(struct hid_collection), GFP_KERNEL); 1798 if (hdev->collection == NULL) 1799 goto err; 1800 hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS; 1801 1802 for (i = 0; i < HID_REPORT_TYPES; i++) 1803 INIT_LIST_HEAD(&hdev->report_enum[i].report_list); 1804 1805 init_waitqueue_head(&hdev->debug_wait); 1806 INIT_LIST_HEAD(&hdev->debug_list); 1807 1808 return hdev; 1809err: 1810 put_device(&hdev->dev); 1811 return ERR_PTR(ret); 1812} 1813EXPORT_SYMBOL_GPL(hid_allocate_device); 1814 1815static void hid_remove_device(struct hid_device *hdev) 1816{ 1817 if (hdev->status & HID_STAT_ADDED) { 1818 device_del(&hdev->dev); 1819 hid_debug_unregister(hdev); 1820 hdev->status &= ~HID_STAT_ADDED; 1821 } 1822} 1823 1824/** 1825 * hid_destroy_device - free previously allocated device 1826 * 1827 * @hdev: hid device 1828 * 1829 * If you allocate hid_device through hid_allocate_device, you should ever 1830 * free by this function. 1831 */ 1832void hid_destroy_device(struct hid_device *hdev) 1833{ 1834 hid_remove_device(hdev); 1835 put_device(&hdev->dev); 1836} 1837EXPORT_SYMBOL_GPL(hid_destroy_device); 1838 1839int __hid_register_driver(struct hid_driver *hdrv, struct module *owner, 1840 const char *mod_name) 1841{ 1842 int ret; 1843 1844 hdrv->driver.name = hdrv->name; 1845 hdrv->driver.bus = &hid_bus_type; 1846 hdrv->driver.owner = owner; 1847 hdrv->driver.mod_name = mod_name; 1848 1849 INIT_LIST_HEAD(&hdrv->dyn_list); 1850 spin_lock_init(&hdrv->dyn_lock); 1851 1852 ret = driver_register(&hdrv->driver); 1853 if (ret) 1854 return ret; 1855 1856 ret = driver_create_file(&hdrv->driver, &driver_attr_new_id); 1857 if (ret) 1858 driver_unregister(&hdrv->driver); 1859 1860 return ret; 1861} 1862EXPORT_SYMBOL_GPL(__hid_register_driver); 1863 1864void hid_unregister_driver(struct hid_driver *hdrv) 1865{ 1866 driver_remove_file(&hdrv->driver, &driver_attr_new_id); 1867 driver_unregister(&hdrv->driver); 1868 hid_free_dynids(hdrv); 1869} 1870EXPORT_SYMBOL_GPL(hid_unregister_driver); 1871 1872int hid_check_keys_pressed(struct hid_device *hid) 1873{ 1874 struct hid_input *hidinput; 1875 int i; 1876 1877 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1878 return 0; 1879 1880 list_for_each_entry(hidinput, &hid->inputs, list) { 1881 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++) 1882 if (hidinput->input->key[i]) 1883 return 1; 1884 } 1885 1886 return 0; 1887} 1888 1889EXPORT_SYMBOL_GPL(hid_check_keys_pressed); 1890 1891static int __init hid_init(void) 1892{ 1893 int ret; 1894 1895 if (hid_debug) 1896 printk(KERN_WARNING "HID: hid_debug is now used solely for parser and driver debugging.\n" 1897 "HID: debugfs is now used for inspecting the device (report descriptor, reports)\n"); 1898 1899 ret = bus_register(&hid_bus_type); 1900 if (ret) { 1901 printk(KERN_ERR "HID: can't register hid bus\n"); 1902 goto err; 1903 } 1904 1905 ret = hidraw_init(); 1906 if (ret) 1907 goto err_bus; 1908 1909 hid_debug_init(); 1910 1911 return 0; 1912err_bus: 1913 bus_unregister(&hid_bus_type); 1914err: 1915 return ret; 1916} 1917 1918static void __exit hid_exit(void) 1919{ 1920 hid_debug_exit(); 1921 hidraw_exit(); 1922 bus_unregister(&hid_bus_type); 1923} 1924 1925module_init(hid_init); 1926module_exit(hid_exit); 1927 1928MODULE_AUTHOR("Andreas Gal"); 1929MODULE_AUTHOR("Vojtech Pavlik"); 1930MODULE_AUTHOR("Jiri Kosina"); 1931MODULE_LICENSE(DRIVER_LICENSE); 1932 1933