hid-core.c revision a635f9dd83f3382577f4544a96df12356e951a40
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_VERSION "v2.6" 43#define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik, Jiri Kosina" 44#define DRIVER_DESC "HID core driver" 45#define DRIVER_LICENSE "GPL" 46 47int hid_debug = 0; 48module_param_named(debug, hid_debug, int, 0600); 49MODULE_PARM_DESC(debug, "HID debugging (0=off, 1=probing info, 2=continuous data dumping)"); 50EXPORT_SYMBOL_GPL(hid_debug); 51 52/* 53 * Register a new report for a device. 54 */ 55 56static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id) 57{ 58 struct hid_report_enum *report_enum = device->report_enum + type; 59 struct hid_report *report; 60 61 if (report_enum->report_id_hash[id]) 62 return report_enum->report_id_hash[id]; 63 64 if (!(report = kzalloc(sizeof(struct hid_report), GFP_KERNEL))) 65 return NULL; 66 67 if (id != 0) 68 report_enum->numbered = 1; 69 70 report->id = id; 71 report->type = type; 72 report->size = 0; 73 report->device = device; 74 report_enum->report_id_hash[id] = report; 75 76 list_add_tail(&report->list, &report_enum->report_list); 77 78 return report; 79} 80 81/* 82 * Register a new field for this report. 83 */ 84 85static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values) 86{ 87 struct hid_field *field; 88 89 if (report->maxfield == HID_MAX_FIELDS) { 90 dbg_hid("too many fields in report\n"); 91 return NULL; 92 } 93 94 if (!(field = kzalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage) 95 + values * sizeof(unsigned), GFP_KERNEL))) return NULL; 96 97 field->index = report->maxfield++; 98 report->field[field->index] = field; 99 field->usage = (struct hid_usage *)(field + 1); 100 field->value = (s32 *)(field->usage + usages); 101 field->report = report; 102 103 return field; 104} 105 106/* 107 * Open a collection. The type/usage is pushed on the stack. 108 */ 109 110static int open_collection(struct hid_parser *parser, unsigned type) 111{ 112 struct hid_collection *collection; 113 unsigned usage; 114 115 usage = parser->local.usage[0]; 116 117 if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) { 118 dbg_hid("collection stack overflow\n"); 119 return -1; 120 } 121 122 if (parser->device->maxcollection == parser->device->collection_size) { 123 collection = kmalloc(sizeof(struct hid_collection) * 124 parser->device->collection_size * 2, GFP_KERNEL); 125 if (collection == NULL) { 126 dbg_hid("failed to reallocate collection array\n"); 127 return -1; 128 } 129 memcpy(collection, parser->device->collection, 130 sizeof(struct hid_collection) * 131 parser->device->collection_size); 132 memset(collection + parser->device->collection_size, 0, 133 sizeof(struct hid_collection) * 134 parser->device->collection_size); 135 kfree(parser->device->collection); 136 parser->device->collection = collection; 137 parser->device->collection_size *= 2; 138 } 139 140 parser->collection_stack[parser->collection_stack_ptr++] = 141 parser->device->maxcollection; 142 143 collection = parser->device->collection + 144 parser->device->maxcollection++; 145 collection->type = type; 146 collection->usage = usage; 147 collection->level = parser->collection_stack_ptr - 1; 148 149 if (type == HID_COLLECTION_APPLICATION) 150 parser->device->maxapplication++; 151 152 return 0; 153} 154 155/* 156 * Close a collection. 157 */ 158 159static int close_collection(struct hid_parser *parser) 160{ 161 if (!parser->collection_stack_ptr) { 162 dbg_hid("collection stack underflow\n"); 163 return -1; 164 } 165 parser->collection_stack_ptr--; 166 return 0; 167} 168 169/* 170 * Climb up the stack, search for the specified collection type 171 * and return the usage. 172 */ 173 174static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type) 175{ 176 int n; 177 for (n = parser->collection_stack_ptr - 1; n >= 0; n--) 178 if (parser->device->collection[parser->collection_stack[n]].type == type) 179 return parser->device->collection[parser->collection_stack[n]].usage; 180 return 0; /* we know nothing about this usage type */ 181} 182 183/* 184 * Add a usage to the temporary parser table. 185 */ 186 187static int hid_add_usage(struct hid_parser *parser, unsigned usage) 188{ 189 if (parser->local.usage_index >= HID_MAX_USAGES) { 190 dbg_hid("usage index exceeded\n"); 191 return -1; 192 } 193 parser->local.usage[parser->local.usage_index] = usage; 194 parser->local.collection_index[parser->local.usage_index] = 195 parser->collection_stack_ptr ? 196 parser->collection_stack[parser->collection_stack_ptr - 1] : 0; 197 parser->local.usage_index++; 198 return 0; 199} 200 201/* 202 * Register a new field for this report. 203 */ 204 205static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags) 206{ 207 struct hid_report *report; 208 struct hid_field *field; 209 int usages; 210 unsigned offset; 211 int i; 212 213 if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) { 214 dbg_hid("hid_register_report failed\n"); 215 return -1; 216 } 217 218 if (parser->global.logical_maximum < parser->global.logical_minimum) { 219 dbg_hid("logical range invalid %d %d\n", parser->global.logical_minimum, parser->global.logical_maximum); 220 return -1; 221 } 222 223 offset = report->size; 224 report->size += parser->global.report_size * parser->global.report_count; 225 226 if (!parser->local.usage_index) /* Ignore padding fields */ 227 return 0; 228 229 usages = max_t(int, parser->local.usage_index, parser->global.report_count); 230 231 if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL) 232 return 0; 233 234 field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL); 235 field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL); 236 field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION); 237 238 for (i = 0; i < usages; i++) { 239 int j = i; 240 /* Duplicate the last usage we parsed if we have excess values */ 241 if (i >= parser->local.usage_index) 242 j = parser->local.usage_index - 1; 243 field->usage[i].hid = parser->local.usage[j]; 244 field->usage[i].collection_index = 245 parser->local.collection_index[j]; 246 } 247 248 field->maxusage = usages; 249 field->flags = flags; 250 field->report_offset = offset; 251 field->report_type = report_type; 252 field->report_size = parser->global.report_size; 253 field->report_count = parser->global.report_count; 254 field->logical_minimum = parser->global.logical_minimum; 255 field->logical_maximum = parser->global.logical_maximum; 256 field->physical_minimum = parser->global.physical_minimum; 257 field->physical_maximum = parser->global.physical_maximum; 258 field->unit_exponent = parser->global.unit_exponent; 259 field->unit = parser->global.unit; 260 261 return 0; 262} 263 264/* 265 * Read data value from item. 266 */ 267 268static u32 item_udata(struct hid_item *item) 269{ 270 switch (item->size) { 271 case 1: return item->data.u8; 272 case 2: return item->data.u16; 273 case 4: return item->data.u32; 274 } 275 return 0; 276} 277 278static s32 item_sdata(struct hid_item *item) 279{ 280 switch (item->size) { 281 case 1: return item->data.s8; 282 case 2: return item->data.s16; 283 case 4: return item->data.s32; 284 } 285 return 0; 286} 287 288/* 289 * Process a global item. 290 */ 291 292static int hid_parser_global(struct hid_parser *parser, struct hid_item *item) 293{ 294 switch (item->tag) { 295 case HID_GLOBAL_ITEM_TAG_PUSH: 296 297 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) { 298 dbg_hid("global enviroment stack overflow\n"); 299 return -1; 300 } 301 302 memcpy(parser->global_stack + parser->global_stack_ptr++, 303 &parser->global, sizeof(struct hid_global)); 304 return 0; 305 306 case HID_GLOBAL_ITEM_TAG_POP: 307 308 if (!parser->global_stack_ptr) { 309 dbg_hid("global enviroment stack underflow\n"); 310 return -1; 311 } 312 313 memcpy(&parser->global, parser->global_stack + 314 --parser->global_stack_ptr, sizeof(struct hid_global)); 315 return 0; 316 317 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE: 318 parser->global.usage_page = item_udata(item); 319 return 0; 320 321 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM: 322 parser->global.logical_minimum = item_sdata(item); 323 return 0; 324 325 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM: 326 if (parser->global.logical_minimum < 0) 327 parser->global.logical_maximum = item_sdata(item); 328 else 329 parser->global.logical_maximum = item_udata(item); 330 return 0; 331 332 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM: 333 parser->global.physical_minimum = item_sdata(item); 334 return 0; 335 336 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM: 337 if (parser->global.physical_minimum < 0) 338 parser->global.physical_maximum = item_sdata(item); 339 else 340 parser->global.physical_maximum = item_udata(item); 341 return 0; 342 343 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT: 344 parser->global.unit_exponent = item_sdata(item); 345 return 0; 346 347 case HID_GLOBAL_ITEM_TAG_UNIT: 348 parser->global.unit = item_udata(item); 349 return 0; 350 351 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE: 352 parser->global.report_size = item_udata(item); 353 if (parser->global.report_size > 32) { 354 dbg_hid("invalid report_size %d\n", 355 parser->global.report_size); 356 return -1; 357 } 358 return 0; 359 360 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT: 361 parser->global.report_count = item_udata(item); 362 if (parser->global.report_count > HID_MAX_USAGES) { 363 dbg_hid("invalid report_count %d\n", 364 parser->global.report_count); 365 return -1; 366 } 367 return 0; 368 369 case HID_GLOBAL_ITEM_TAG_REPORT_ID: 370 parser->global.report_id = item_udata(item); 371 if (parser->global.report_id == 0) { 372 dbg_hid("report_id 0 is invalid\n"); 373 return -1; 374 } 375 return 0; 376 377 default: 378 dbg_hid("unknown global tag 0x%x\n", item->tag); 379 return -1; 380 } 381} 382 383/* 384 * Process a local item. 385 */ 386 387static int hid_parser_local(struct hid_parser *parser, struct hid_item *item) 388{ 389 __u32 data; 390 unsigned n; 391 392 if (item->size == 0) { 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(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 bitsused = offset + count * size; 944 unsigned n; 945 946 /* make sure the unused bits in the last byte are zeros */ 947 if (count > 0 && size > 0 && (bitsused % 8) != 0) 948 data[(bitsused-1)/8] &= (1 << (bitsused % 8)) - 1; 949 950 for (n = 0; n < count; n++) { 951 if (field->logical_minimum < 0) /* signed values */ 952 implement(data, offset + n * size, size, s32ton(field->value[n], size)); 953 else /* unsigned values */ 954 implement(data, offset + n * size, size, field->value[n]); 955 } 956} 957 958/* 959 * Create a report. 960 */ 961 962void hid_output_report(struct hid_report *report, __u8 *data) 963{ 964 unsigned n; 965 966 if (report->id > 0) 967 *data++ = report->id; 968 969 for (n = 0; n < report->maxfield; n++) 970 hid_output_field(report->field[n], data); 971} 972EXPORT_SYMBOL_GPL(hid_output_report); 973 974/* 975 * Set a field value. The report this field belongs to has to be 976 * created and transferred to the device, to set this value in the 977 * device. 978 */ 979 980int hid_set_field(struct hid_field *field, unsigned offset, __s32 value) 981{ 982 unsigned size = field->report_size; 983 984 hid_dump_input(field->usage + offset, value); 985 986 if (offset >= field->report_count) { 987 dbg_hid("offset (%d) exceeds report_count (%d)\n", offset, field->report_count); 988 return -1; 989 } 990 if (field->logical_minimum < 0) { 991 if (value != snto32(s32ton(value, size), size)) { 992 dbg_hid("value %d is out of range\n", value); 993 return -1; 994 } 995 } 996 field->value[offset] = value; 997 return 0; 998} 999EXPORT_SYMBOL_GPL(hid_set_field); 1000 1001static struct hid_report *hid_get_report(struct hid_report_enum *report_enum, 1002 const u8 *data) 1003{ 1004 struct hid_report *report; 1005 unsigned int n = 0; /* Normally report number is 0 */ 1006 1007 /* Device uses numbered reports, data[0] is report number */ 1008 if (report_enum->numbered) 1009 n = *data; 1010 1011 report = report_enum->report_id_hash[n]; 1012 if (report == NULL) 1013 dbg_hid("undefined report_id %u received\n", n); 1014 1015 return report; 1016} 1017 1018void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, 1019 int interrupt) 1020{ 1021 struct hid_report_enum *report_enum = hid->report_enum + type; 1022 struct hid_report *report; 1023 unsigned int a; 1024 int rsize, csize = size; 1025 u8 *cdata = data; 1026 1027 report = hid_get_report(report_enum, data); 1028 if (!report) 1029 return; 1030 1031 if (report_enum->numbered) { 1032 cdata++; 1033 csize--; 1034 } 1035 1036 rsize = ((report->size - 1) >> 3) + 1; 1037 1038 if (csize < rsize) { 1039 dbg_hid("report %d is too short, (%d < %d)\n", report->id, 1040 csize, rsize); 1041 memset(cdata + csize, 0, rsize - csize); 1042 } 1043 1044 if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event) 1045 hid->hiddev_report_event(hid, report); 1046 if (hid->claimed & HID_CLAIMED_HIDRAW) { 1047 /* numbered reports need to be passed with the report num */ 1048 if (report_enum->numbered) 1049 hidraw_report_event(hid, data - 1, size + 1); 1050 else 1051 hidraw_report_event(hid, data, size); 1052 } 1053 1054 for (a = 0; a < report->maxfield; a++) 1055 hid_input_field(hid, report->field[a], cdata, interrupt); 1056 1057 if (hid->claimed & HID_CLAIMED_INPUT) 1058 hidinput_report_event(hid, report); 1059} 1060EXPORT_SYMBOL_GPL(hid_report_raw_event); 1061 1062/** 1063 * hid_input_report - report data from lower layer (usb, bt...) 1064 * 1065 * @hid: hid device 1066 * @type: HID report type (HID_*_REPORT) 1067 * @data: report contents 1068 * @size: size of data parameter 1069 * @interrupt: called from atomic? 1070 * 1071 * This is data entry for lower layers. 1072 */ 1073int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt) 1074{ 1075 struct hid_report_enum *report_enum = hid->report_enum + type; 1076 struct hid_driver *hdrv = hid->driver; 1077 struct hid_report *report; 1078 unsigned int i; 1079 int ret; 1080 1081 if (!hid || !hid->driver) 1082 return -ENODEV; 1083 1084 if (!size) { 1085 dbg_hid("empty report\n"); 1086 return -1; 1087 } 1088 1089 dbg_hid("report (size %u) (%snumbered)\n", size, report_enum->numbered ? "" : "un"); 1090 1091 report = hid_get_report(report_enum, data); 1092 if (!report) 1093 return -1; 1094 1095 /* dump the report */ 1096 dbg_hid("report %d (size %u) = ", report->id, size); 1097 for (i = 0; i < size; i++) 1098 dbg_hid_line(" %02x", data[i]); 1099 dbg_hid_line("\n"); 1100 1101 if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) { 1102 ret = hdrv->raw_event(hid, report, data, size); 1103 if (ret != 0) 1104 return ret < 0 ? ret : 0; 1105 } 1106 1107 hid_report_raw_event(hid, type, data, size, interrupt); 1108 1109 return 0; 1110} 1111EXPORT_SYMBOL_GPL(hid_input_report); 1112 1113static bool hid_match_one_id(struct hid_device *hdev, 1114 const struct hid_device_id *id) 1115{ 1116 return id->bus == hdev->bus && 1117 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) && 1118 (id->product == HID_ANY_ID || id->product == hdev->product); 1119} 1120 1121static const struct hid_device_id *hid_match_id(struct hid_device *hdev, 1122 const struct hid_device_id *id) 1123{ 1124 for (; id->bus; id++) 1125 if (hid_match_one_id(hdev, id)) 1126 return id; 1127 1128 return NULL; 1129} 1130 1131static const struct hid_device_id hid_hiddev_list[] = { 1132 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) }, 1133 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) }, 1134 { } 1135}; 1136 1137static bool hid_hiddev(struct hid_device *hdev) 1138{ 1139 return !!hid_match_id(hdev, hid_hiddev_list); 1140} 1141 1142int hid_connect(struct hid_device *hdev, unsigned int connect_mask) 1143{ 1144 static const char *types[] = { "Device", "Pointer", "Mouse", "Device", 1145 "Joystick", "Gamepad", "Keyboard", "Keypad", 1146 "Multi-Axis Controller" 1147 }; 1148 const char *type, *bus; 1149 char buf[64]; 1150 unsigned int i; 1151 int len; 1152 1153 if (hdev->bus != BUS_USB) 1154 connect_mask &= ~HID_CONNECT_HIDDEV; 1155 if (hid_hiddev(hdev)) 1156 connect_mask |= HID_CONNECT_HIDDEV_FORCE; 1157 1158 if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev, 1159 connect_mask & HID_CONNECT_HIDINPUT_FORCE)) 1160 hdev->claimed |= HID_CLAIMED_INPUT; 1161 if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect && 1162 !hdev->hiddev_connect(hdev, 1163 connect_mask & HID_CONNECT_HIDDEV_FORCE)) 1164 hdev->claimed |= HID_CLAIMED_HIDDEV; 1165 if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev)) 1166 hdev->claimed |= HID_CLAIMED_HIDRAW; 1167 1168 if (!hdev->claimed) { 1169 dev_err(&hdev->dev, "claimed by neither input, hiddev nor " 1170 "hidraw\n"); 1171 return -ENODEV; 1172 } 1173 1174 if ((hdev->claimed & HID_CLAIMED_INPUT) && 1175 (connect_mask & HID_CONNECT_FF) && hdev->ff_init) 1176 hdev->ff_init(hdev); 1177 1178 len = 0; 1179 if (hdev->claimed & HID_CLAIMED_INPUT) 1180 len += sprintf(buf + len, "input"); 1181 if (hdev->claimed & HID_CLAIMED_HIDDEV) 1182 len += sprintf(buf + len, "%shiddev%d", len ? "," : "", 1183 hdev->minor); 1184 if (hdev->claimed & HID_CLAIMED_HIDRAW) 1185 len += sprintf(buf + len, "%shidraw%d", len ? "," : "", 1186 ((struct hidraw *)hdev->hidraw)->minor); 1187 1188 type = "Device"; 1189 for (i = 0; i < hdev->maxcollection; i++) { 1190 struct hid_collection *col = &hdev->collection[i]; 1191 if (col->type == HID_COLLECTION_APPLICATION && 1192 (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK && 1193 (col->usage & 0xffff) < ARRAY_SIZE(types)) { 1194 type = types[col->usage & 0xffff]; 1195 break; 1196 } 1197 } 1198 1199 switch (hdev->bus) { 1200 case BUS_USB: 1201 bus = "USB"; 1202 break; 1203 case BUS_BLUETOOTH: 1204 bus = "BLUETOOTH"; 1205 break; 1206 default: 1207 bus = "<UNKNOWN>"; 1208 } 1209 1210 dev_info(&hdev->dev, "%s: %s HID v%x.%02x %s [%s] on %s\n", 1211 buf, bus, hdev->version >> 8, hdev->version & 0xff, 1212 type, hdev->name, hdev->phys); 1213 1214 return 0; 1215} 1216EXPORT_SYMBOL_GPL(hid_connect); 1217 1218/* a list of devices for which there is a specialized driver on HID bus */ 1219static const struct hid_device_id hid_blacklist[] = { 1220 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) }, 1221 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) }, 1222 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) }, 1223 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) }, 1224 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) }, 1225 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) }, 1226 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) }, 1227 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) }, 1228 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) }, 1229 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) }, 1230 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) }, 1231 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) }, 1232 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) }, 1233 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) }, 1234 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) }, 1235 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) }, 1236 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) }, 1237 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) }, 1238 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) }, 1239 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) }, 1240 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) }, 1241 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) }, 1242 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) }, 1243 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) }, 1244 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) }, 1245 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) }, 1246 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) }, 1247 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) }, 1248 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) }, 1249 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) }, 1250 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) }, 1251 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) }, 1252 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) }, 1253 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) }, 1254 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) }, 1255 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) }, 1256 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) }, 1257 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) }, 1258 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) }, 1259 { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) }, 1260 { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) }, 1261 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) }, 1262 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) }, 1263 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) }, 1264 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) }, 1265 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) }, 1266 { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) }, 1267 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) }, 1268 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) }, 1269 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) }, 1270 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) }, 1271 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) }, 1272 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) }, 1273 { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) }, 1274 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) }, 1275 { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) }, 1276 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) }, 1277 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) }, 1278 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) }, 1279 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) }, 1280 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) }, 1281 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) }, 1282 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) }, 1283 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) }, 1284 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) }, 1285 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) }, 1286 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) }, 1287 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) }, 1288 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) }, 1289 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) }, 1290 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) }, 1291 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) }, 1292 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) }, 1293 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) }, 1294 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) }, 1295 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) }, 1296 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) }, 1297 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) }, 1298 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) }, 1299 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) }, 1300 { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) }, 1301 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) }, 1302 { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) }, 1303 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) }, 1304 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) }, 1305 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) }, 1306 { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) }, 1307 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) }, 1308 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) }, 1309 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) }, 1310 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) }, 1311 { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) }, 1312 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) }, 1313 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) }, 1314 1315 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 0x030c) }, 1316 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) }, 1317 { } 1318}; 1319 1320struct hid_dynid { 1321 struct list_head list; 1322 struct hid_device_id id; 1323}; 1324 1325/** 1326 * store_new_id - add a new HID device ID to this driver and re-probe devices 1327 * @driver: target device driver 1328 * @buf: buffer for scanning device ID data 1329 * @count: input size 1330 * 1331 * Adds a new dynamic hid device ID to this driver, 1332 * and causes the driver to probe for all devices again. 1333 */ 1334static ssize_t store_new_id(struct device_driver *drv, const char *buf, 1335 size_t count) 1336{ 1337 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver); 1338 struct hid_dynid *dynid; 1339 __u32 bus, vendor, product; 1340 unsigned long driver_data = 0; 1341 int ret; 1342 1343 ret = sscanf(buf, "%x %x %x %lx", 1344 &bus, &vendor, &product, &driver_data); 1345 if (ret < 3) 1346 return -EINVAL; 1347 1348 dynid = kzalloc(sizeof(*dynid), GFP_KERNEL); 1349 if (!dynid) 1350 return -ENOMEM; 1351 1352 dynid->id.bus = bus; 1353 dynid->id.vendor = vendor; 1354 dynid->id.product = product; 1355 dynid->id.driver_data = driver_data; 1356 1357 spin_lock(&hdrv->dyn_lock); 1358 list_add_tail(&dynid->list, &hdrv->dyn_list); 1359 spin_unlock(&hdrv->dyn_lock); 1360 1361 ret = 0; 1362 if (get_driver(&hdrv->driver)) { 1363 ret = driver_attach(&hdrv->driver); 1364 put_driver(&hdrv->driver); 1365 } 1366 1367 return ret ? : count; 1368} 1369static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id); 1370 1371static void hid_free_dynids(struct hid_driver *hdrv) 1372{ 1373 struct hid_dynid *dynid, *n; 1374 1375 spin_lock(&hdrv->dyn_lock); 1376 list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) { 1377 list_del(&dynid->list); 1378 kfree(dynid); 1379 } 1380 spin_unlock(&hdrv->dyn_lock); 1381} 1382 1383static const struct hid_device_id *hid_match_device(struct hid_device *hdev, 1384 struct hid_driver *hdrv) 1385{ 1386 struct hid_dynid *dynid; 1387 1388 spin_lock(&hdrv->dyn_lock); 1389 list_for_each_entry(dynid, &hdrv->dyn_list, list) { 1390 if (hid_match_one_id(hdev, &dynid->id)) { 1391 spin_unlock(&hdrv->dyn_lock); 1392 return &dynid->id; 1393 } 1394 } 1395 spin_unlock(&hdrv->dyn_lock); 1396 1397 return hid_match_id(hdev, hdrv->id_table); 1398} 1399 1400static int hid_bus_match(struct device *dev, struct device_driver *drv) 1401{ 1402 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver); 1403 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 1404 1405 if (!hid_match_device(hdev, hdrv)) 1406 return 0; 1407 1408 /* generic wants all non-blacklisted */ 1409 if (!strncmp(hdrv->name, "generic-", 8)) 1410 return !hid_match_id(hdev, hid_blacklist); 1411 1412 return 1; 1413} 1414 1415static int hid_device_probe(struct device *dev) 1416{ 1417 struct hid_driver *hdrv = container_of(dev->driver, 1418 struct hid_driver, driver); 1419 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 1420 const struct hid_device_id *id; 1421 int ret = 0; 1422 1423 if (!hdev->driver) { 1424 id = hid_match_device(hdev, hdrv); 1425 if (id == NULL) 1426 return -ENODEV; 1427 1428 hdev->driver = hdrv; 1429 if (hdrv->probe) { 1430 ret = hdrv->probe(hdev, id); 1431 } else { /* default probe */ 1432 ret = hid_parse(hdev); 1433 if (!ret) 1434 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 1435 } 1436 if (ret) 1437 hdev->driver = NULL; 1438 } 1439 return ret; 1440} 1441 1442static int hid_device_remove(struct device *dev) 1443{ 1444 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 1445 struct hid_driver *hdrv = hdev->driver; 1446 1447 if (hdrv) { 1448 if (hdrv->remove) 1449 hdrv->remove(hdev); 1450 else /* default remove */ 1451 hid_hw_stop(hdev); 1452 hdev->driver = NULL; 1453 } 1454 1455 return 0; 1456} 1457 1458static int hid_uevent(struct device *dev, struct kobj_uevent_env *env) 1459{ 1460 struct hid_device *hdev = container_of(dev, struct hid_device, dev); 1461 1462 if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X", 1463 hdev->bus, hdev->vendor, hdev->product)) 1464 return -ENOMEM; 1465 1466 if (add_uevent_var(env, "HID_NAME=%s", hdev->name)) 1467 return -ENOMEM; 1468 1469 if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys)) 1470 return -ENOMEM; 1471 1472 if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq)) 1473 return -ENOMEM; 1474 1475 if (add_uevent_var(env, "MODALIAS=hid:b%04Xv%08Xp%08X", 1476 hdev->bus, hdev->vendor, hdev->product)) 1477 return -ENOMEM; 1478 1479 return 0; 1480} 1481 1482static struct bus_type hid_bus_type = { 1483 .name = "hid", 1484 .match = hid_bus_match, 1485 .probe = hid_device_probe, 1486 .remove = hid_device_remove, 1487 .uevent = hid_uevent, 1488}; 1489 1490/* a list of devices that shouldn't be handled by HID core at all */ 1491static const struct hid_device_id hid_ignore_list[] = { 1492 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) }, 1493 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) }, 1494 { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) }, 1495 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) }, 1496 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) }, 1497 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) }, 1498 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) }, 1499 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) }, 1500 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) }, 1501 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) }, 1502 { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) }, 1503 { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) }, 1504 { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM)}, 1505 { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM2)}, 1506 { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) }, 1507 { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) }, 1508 { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) }, 1509 { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) }, 1510 { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) }, 1511 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) }, 1512 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) }, 1513 { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) }, 1514 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) }, 1515 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) }, 1516 { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) }, 1517 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) }, 1518 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) }, 1519 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0003) }, 1520 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) }, 1521 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) }, 1522 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) }, 1523 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) }, 1524 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) }, 1525 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) }, 1526 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) }, 1527 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) }, 1528 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) }, 1529 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) }, 1530 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) }, 1531 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) }, 1532 { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) }, 1533 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) }, 1534 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) }, 1535 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) }, 1536 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) }, 1537 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) }, 1538 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) }, 1539 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) }, 1540 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) }, 1541 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) }, 1542 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) }, 1543 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) }, 1544 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) }, 1545 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) }, 1546 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) }, 1547 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) }, 1548 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) }, 1549 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) }, 1550 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) }, 1551 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) }, 1552 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) }, 1553 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) }, 1554 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) }, 1555 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) }, 1556 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) }, 1557 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) }, 1558 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) }, 1559 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) }, 1560 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) }, 1561 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) }, 1562 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) }, 1563 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) }, 1564 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) }, 1565 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) }, 1566 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) }, 1567 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) }, 1568 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) }, 1569 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) }, 1570 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) }, 1571 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) }, 1572 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) }, 1573 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) }, 1574 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) }, 1575 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) }, 1576 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) }, 1577 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) }, 1578 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) }, 1579 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) }, 1580 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) }, 1581 { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) }, 1582 { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) }, 1583 { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) }, 1584 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) }, 1585 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) }, 1586 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) }, 1587 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) }, 1588 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) }, 1589 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) }, 1590 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) }, 1591 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY1) }, 1592 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) }, 1593 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) }, 1594 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) }, 1595 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) }, 1596 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) }, 1597 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) }, 1598 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) }, 1599 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) }, 1600 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) }, 1601 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) }, 1602 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) }, 1603 { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) }, 1604 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) }, 1605 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) }, 1606 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) }, 1607 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) }, 1608 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) }, 1609 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) }, 1610 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) }, 1611 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) }, 1612 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) }, 1613 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) }, 1614 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) }, 1615 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) }, 1616 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) }, 1617 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) }, 1618 { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) }, 1619 { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD) }, 1620 { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD2) }, 1621 { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD3) }, 1622 { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD4) }, 1623 { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD5) }, 1624 { HID_USB_DEVICE(USB_VENDOR_ID_TENX, USB_DEVICE_ID_TENX_IBUDDY1) }, 1625 { HID_USB_DEVICE(USB_VENDOR_ID_TENX, USB_DEVICE_ID_TENX_IBUDDY2) }, 1626 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) }, 1627 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) }, 1628 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) }, 1629 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) }, 1630 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) }, 1631 { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) }, 1632 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) }, 1633 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) }, 1634 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) }, 1635 { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) }, 1636 { } 1637}; 1638 1639/** 1640 * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer 1641 * 1642 * There are composite devices for which we want to ignore only a certain 1643 * interface. This is a list of devices for which only the mouse interface will 1644 * be ignored. This allows a dedicated driver to take care of the interface. 1645 */ 1646static const struct hid_device_id hid_mouse_ignore_list[] = { 1647 /* appletouch driver */ 1648 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) }, 1649 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) }, 1650 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) }, 1651 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) }, 1652 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) }, 1653 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) }, 1654 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) }, 1655 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) }, 1656 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) }, 1657 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) }, 1658 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) }, 1659 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) }, 1660 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) }, 1661 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) }, 1662 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) }, 1663 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) }, 1664 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) }, 1665 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) }, 1666 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) }, 1667 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) }, 1668 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) }, 1669 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) }, 1670 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) }, 1671 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) }, 1672 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) }, 1673 { } 1674}; 1675 1676static bool hid_ignore(struct hid_device *hdev) 1677{ 1678 switch (hdev->vendor) { 1679 case USB_VENDOR_ID_CODEMERCS: 1680 /* ignore all Code Mercenaries IOWarrior devices */ 1681 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST && 1682 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST) 1683 return true; 1684 break; 1685 case USB_VENDOR_ID_LOGITECH: 1686 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST && 1687 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST) 1688 return true; 1689 break; 1690 } 1691 1692 if (hdev->type == HID_TYPE_USBMOUSE && 1693 hid_match_id(hdev, hid_mouse_ignore_list)) 1694 return true; 1695 1696 return !!hid_match_id(hdev, hid_ignore_list); 1697} 1698 1699int hid_add_device(struct hid_device *hdev) 1700{ 1701 static atomic_t id = ATOMIC_INIT(0); 1702 int ret; 1703 1704 if (WARN_ON(hdev->status & HID_STAT_ADDED)) 1705 return -EBUSY; 1706 1707 /* we need to kill them here, otherwise they will stay allocated to 1708 * wait for coming driver */ 1709 if (hid_ignore(hdev)) 1710 return -ENODEV; 1711 1712 /* XXX hack, any other cleaner solution after the driver core 1713 * is converted to allow more than 20 bytes as the device name? */ 1714 dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus, 1715 hdev->vendor, hdev->product, atomic_inc_return(&id)); 1716 1717 ret = device_add(&hdev->dev); 1718 if (!ret) 1719 hdev->status |= HID_STAT_ADDED; 1720 1721 hid_debug_register(hdev, dev_name(&hdev->dev)); 1722 1723 return ret; 1724} 1725EXPORT_SYMBOL_GPL(hid_add_device); 1726 1727/** 1728 * hid_allocate_device - allocate new hid device descriptor 1729 * 1730 * Allocate and initialize hid device, so that hid_destroy_device might be 1731 * used to free it. 1732 * 1733 * New hid_device pointer is returned on success, otherwise ERR_PTR encoded 1734 * error value. 1735 */ 1736struct hid_device *hid_allocate_device(void) 1737{ 1738 struct hid_device *hdev; 1739 unsigned int i; 1740 int ret = -ENOMEM; 1741 1742 hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); 1743 if (hdev == NULL) 1744 return ERR_PTR(ret); 1745 1746 device_initialize(&hdev->dev); 1747 hdev->dev.release = hid_device_release; 1748 hdev->dev.bus = &hid_bus_type; 1749 1750 hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS, 1751 sizeof(struct hid_collection), GFP_KERNEL); 1752 if (hdev->collection == NULL) 1753 goto err; 1754 hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS; 1755 1756 for (i = 0; i < HID_REPORT_TYPES; i++) 1757 INIT_LIST_HEAD(&hdev->report_enum[i].report_list); 1758 1759 return hdev; 1760err: 1761 put_device(&hdev->dev); 1762 return ERR_PTR(ret); 1763} 1764EXPORT_SYMBOL_GPL(hid_allocate_device); 1765 1766static void hid_remove_device(struct hid_device *hdev) 1767{ 1768 if (hdev->status & HID_STAT_ADDED) { 1769 device_del(&hdev->dev); 1770 hid_debug_unregister(hdev); 1771 hdev->status &= ~HID_STAT_ADDED; 1772 } 1773} 1774 1775/** 1776 * hid_destroy_device - free previously allocated device 1777 * 1778 * @hdev: hid device 1779 * 1780 * If you allocate hid_device through hid_allocate_device, you should ever 1781 * free by this function. 1782 */ 1783void hid_destroy_device(struct hid_device *hdev) 1784{ 1785 hid_remove_device(hdev); 1786 put_device(&hdev->dev); 1787} 1788EXPORT_SYMBOL_GPL(hid_destroy_device); 1789 1790int __hid_register_driver(struct hid_driver *hdrv, struct module *owner, 1791 const char *mod_name) 1792{ 1793 int ret; 1794 1795 hdrv->driver.name = hdrv->name; 1796 hdrv->driver.bus = &hid_bus_type; 1797 hdrv->driver.owner = owner; 1798 hdrv->driver.mod_name = mod_name; 1799 1800 INIT_LIST_HEAD(&hdrv->dyn_list); 1801 spin_lock_init(&hdrv->dyn_lock); 1802 1803 ret = driver_register(&hdrv->driver); 1804 if (ret) 1805 return ret; 1806 1807 ret = driver_create_file(&hdrv->driver, &driver_attr_new_id); 1808 if (ret) 1809 driver_unregister(&hdrv->driver); 1810 1811 return ret; 1812} 1813EXPORT_SYMBOL_GPL(__hid_register_driver); 1814 1815void hid_unregister_driver(struct hid_driver *hdrv) 1816{ 1817 driver_remove_file(&hdrv->driver, &driver_attr_new_id); 1818 driver_unregister(&hdrv->driver); 1819 hid_free_dynids(hdrv); 1820} 1821EXPORT_SYMBOL_GPL(hid_unregister_driver); 1822 1823int hid_check_keys_pressed(struct hid_device *hid) 1824{ 1825 struct hid_input *hidinput; 1826 int i; 1827 1828 if (!(hid->claimed & HID_CLAIMED_INPUT)) 1829 return 0; 1830 1831 list_for_each_entry(hidinput, &hid->inputs, list) { 1832 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++) 1833 if (hidinput->input->key[i]) 1834 return 1; 1835 } 1836 1837 return 0; 1838} 1839 1840EXPORT_SYMBOL_GPL(hid_check_keys_pressed); 1841 1842static int __init hid_init(void) 1843{ 1844 int ret; 1845 1846 if (hid_debug) 1847 printk(KERN_WARNING "HID: hid_debug parameter has been deprecated. " 1848 "Debugging data are now provided via debugfs\n"); 1849 1850 ret = bus_register(&hid_bus_type); 1851 if (ret) { 1852 printk(KERN_ERR "HID: can't register hid bus\n"); 1853 goto err; 1854 } 1855 1856 ret = hidraw_init(); 1857 if (ret) 1858 goto err_bus; 1859 1860 hid_debug_init(); 1861 1862 return 0; 1863err_bus: 1864 bus_unregister(&hid_bus_type); 1865err: 1866 return ret; 1867} 1868 1869static void __exit hid_exit(void) 1870{ 1871 hid_debug_exit(); 1872 hidraw_exit(); 1873 bus_unregister(&hid_bus_type); 1874} 1875 1876module_init(hid_init); 1877module_exit(hid_exit); 1878 1879MODULE_LICENSE(DRIVER_LICENSE); 1880 1881