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HID: Export hid_register_report
[linux-2.6-block.git] / drivers / hid / hid-core.c
CommitLineData
dde5845a 1/*
229695e5 2 * HID support for Linux
dde5845a
JK		 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
f142b3a4 7 * Copyright (c) 2006-2007 Jiri Kosina
dde5845a
JK		 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>
dde5845a
JK		 21#include <linux/list.h>
22#include <linux/mm.h>
dde5845a
JK		 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>
47a80edb 28#include <linux/vmalloc.h>
c4124c9b 29#include <linux/sched.h>
dde5845a 30
dde5845a
JK		 31#include <linux/hid.h>
32#include <linux/hiddev.h>
c080d89a 33#include <linux/hid-debug.h>
86166b7b 34#include <linux/hidraw.h>
dde5845a 35
5f22a799
JS		 36#include "hid-ids.h"
37
dde5845a
JK		 38/*
39 * Version Information
40 */
41
53149801 42#define DRIVER_DESC "HID core driver"
dde5845a
JK		 43#define DRIVER_LICENSE "GPL"
44
58037eb9 45int hid_debug = 0;
377e10fb 46module_param_named(debug, hid_debug, int, 0600);
cd667ce2 47MODULE_PARM_DESC(debug, "toggle HID debugging messages");
58037eb9 48EXPORT_SYMBOL_GPL(hid_debug);
58037eb9 49
dde5845a
JK		 50/*
51 * Register a new report for a device.
52 */
53
90a006ab 54struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
dde5845a
JK		 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}
90a006ab 78EXPORT_SYMBOL_GPL(hid_register_report);
dde5845a
JK		 79
80/*
81 * Register a new field for this report.
82 */
83
84static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
85{
86 struct hid_field *field;
87
88 if (report->maxfield == HID_MAX_FIELDS) {
58037eb9 89 dbg_hid("too many fields in report\n");
dde5845a
JK		 90 return NULL;
91 }
92
93 if (!(field = kzalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
94 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
95
96 field->index = report->maxfield++;
97 report->field[field->index] = field;
98 field->usage = (struct hid_usage *)(field + 1);
282bfd4c 99 field->value = (s32 *)(field->usage + usages);
dde5845a
JK		 100 field->report = report;
101
102 return field;
103}
104
105/*
106 * Open a collection. The type/usage is pushed on the stack.
107 */
108
109static int open_collection(struct hid_parser *parser, unsigned type)
110{
111 struct hid_collection *collection;
112 unsigned usage;
113
114 usage = parser->local.usage[0];
115
116 if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
58037eb9 117 dbg_hid("collection stack overflow\n");
dde5845a
JK		 118 return -1;
119 }
120
121 if (parser->device->maxcollection == parser->device->collection_size) {
122 collection = kmalloc(sizeof(struct hid_collection) *
123 parser->device->collection_size * 2, GFP_KERNEL);
124 if (collection == NULL) {
58037eb9 125 dbg_hid("failed to reallocate collection array\n");
dde5845a
JK		 126 return -1;
127 }
128 memcpy(collection, parser->device->collection,
129 sizeof(struct hid_collection) *
130 parser->device->collection_size);
131 memset(collection + parser->device->collection_size, 0,
132 sizeof(struct hid_collection) *
133 parser->device->collection_size);
134 kfree(parser->device->collection);
135 parser->device->collection = collection;
136 parser->device->collection_size *= 2;
137 }
138
139 parser->collection_stack[parser->collection_stack_ptr++] =
140 parser->device->maxcollection;
141
142 collection = parser->device->collection +
143 parser->device->maxcollection++;
144 collection->type = type;
145 collection->usage = usage;
146 collection->level = parser->collection_stack_ptr - 1;
147
148 if (type == HID_COLLECTION_APPLICATION)
149 parser->device->maxapplication++;
150
151 return 0;
152}
153
154/*
155 * Close a collection.
156 */
157
158static int close_collection(struct hid_parser *parser)
159{
160 if (!parser->collection_stack_ptr) {
58037eb9 161 dbg_hid("collection stack underflow\n");
dde5845a
JK		 162 return -1;
163 }
164 parser->collection_stack_ptr--;
165 return 0;
166}
167
168/*
169 * Climb up the stack, search for the specified collection type
170 * and return the usage.
171 */
172
173static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
174{
175 int n;
176 for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
177 if (parser->device->collection[parser->collection_stack[n]].type == type)
178 return parser->device->collection[parser->collection_stack[n]].usage;
179 return 0; /* we know nothing about this usage type */
180}
181
182/*
183 * Add a usage to the temporary parser table.
184 */
185
186static int hid_add_usage(struct hid_parser *parser, unsigned usage)
187{
188 if (parser->local.usage_index >= HID_MAX_USAGES) {
58037eb9 189 dbg_hid("usage index exceeded\n");
dde5845a
JK		 190 return -1;
191 }
192 parser->local.usage[parser->local.usage_index] = usage;
193 parser->local.collection_index[parser->local.usage_index] =
194 parser->collection_stack_ptr ?
195 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
196 parser->local.usage_index++;
197 return 0;
198}
199
200/*
201 * Register a new field for this report.
202 */
203
204static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
205{
206 struct hid_report *report;
207 struct hid_field *field;
208 int usages;
209 unsigned offset;
210 int i;
211
212 if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
58037eb9 213 dbg_hid("hid_register_report failed\n");
dde5845a
JK		 214 return -1;
215 }
216
217 if (parser->global.logical_maximum < parser->global.logical_minimum) {
58037eb9 218 dbg_hid("logical range invalid %d %d\n", parser->global.logical_minimum, parser->global.logical_maximum);
dde5845a
JK		 219 return -1;
220 }
221
222 offset = report->size;
223 report->size += parser->global.report_size * parser->global.report_count;
224
225 if (!parser->local.usage_index) /* Ignore padding fields */
226 return 0;
227
228 usages = max_t(int, parser->local.usage_index, parser->global.report_count);
229
230 if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
231 return 0;
232
233 field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
234 field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
235 field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
236
237 for (i = 0; i < usages; i++) {
238 int j = i;
239 /* Duplicate the last usage we parsed if we have excess values */
240 if (i >= parser->local.usage_index)
241 j = parser->local.usage_index - 1;
242 field->usage[i].hid = parser->local.usage[j];
243 field->usage[i].collection_index =
244 parser->local.collection_index[j];
245 }
246
247 field->maxusage = usages;
248 field->flags = flags;
249 field->report_offset = offset;
250 field->report_type = report_type;
251 field->report_size = parser->global.report_size;
252 field->report_count = parser->global.report_count;
253 field->logical_minimum = parser->global.logical_minimum;
254 field->logical_maximum = parser->global.logical_maximum;
255 field->physical_minimum = parser->global.physical_minimum;
256 field->physical_maximum = parser->global.physical_maximum;
257 field->unit_exponent = parser->global.unit_exponent;
258 field->unit = parser->global.unit;
259
260 return 0;
261}
262
263/*
264 * Read data value from item.
265 */
266
267static u32 item_udata(struct hid_item *item)
268{
269 switch (item->size) {
880d29f1
JS		 270 case 1: return item->data.u8;
271 case 2: return item->data.u16;
272 case 4: return item->data.u32;
dde5845a
JK		 273 }
274 return 0;
275}
276
277static s32 item_sdata(struct hid_item *item)
278{
279 switch (item->size) {
880d29f1
JS		 280 case 1: return item->data.s8;
281 case 2: return item->data.s16;
282 case 4: return item->data.s32;
dde5845a
JK		 283 }
284 return 0;
285}
286
287/*
288 * Process a global item.
289 */
290
291static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
292{
293 switch (item->tag) {
880d29f1 294 case HID_GLOBAL_ITEM_TAG_PUSH:
dde5845a 295
880d29f1
JS		 296 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
297 dbg_hid("global enviroment stack overflow\n");
298 return -1;
299 }
dde5845a 300
880d29f1
JS		 301 memcpy(parser->global_stack + parser->global_stack_ptr++,
302 &parser->global, sizeof(struct hid_global));
303 return 0;
dde5845a 304
880d29f1 305 case HID_GLOBAL_ITEM_TAG_POP:
dde5845a 306
880d29f1
JS		 307 if (!parser->global_stack_ptr) {
308 dbg_hid("global enviroment stack underflow\n");
309 return -1;
310 }
dde5845a 311
880d29f1
JS		 312 memcpy(&parser->global, parser->global_stack +
313 --parser->global_stack_ptr, sizeof(struct hid_global));
314 return 0;
dde5845a 315
880d29f1
JS		 316 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
317 parser->global.usage_page = item_udata(item);
318 return 0;
dde5845a 319
880d29f1
JS		 320 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
321 parser->global.logical_minimum = item_sdata(item);
322 return 0;
dde5845a 323
880d29f1
JS		 324 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
325 if (parser->global.logical_minimum < 0)
326 parser->global.logical_maximum = item_sdata(item);
327 else
328 parser->global.logical_maximum = item_udata(item);
329 return 0;
dde5845a 330
880d29f1
JS		 331 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
332 parser->global.physical_minimum = item_sdata(item);
333 return 0;
dde5845a 334
880d29f1
JS		 335 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
336 if (parser->global.physical_minimum < 0)
337 parser->global.physical_maximum = item_sdata(item);
338 else
339 parser->global.physical_maximum = item_udata(item);
340 return 0;
dde5845a 341
880d29f1
JS		 342 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
343 parser->global.unit_exponent = item_sdata(item);
344 return 0;
dde5845a 345
880d29f1
JS		 346 case HID_GLOBAL_ITEM_TAG_UNIT:
347 parser->global.unit = item_udata(item);
348 return 0;
dde5845a 349
880d29f1
JS		 350 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
351 parser->global.report_size = item_udata(item);
352 if (parser->global.report_size > 32) {
353 dbg_hid("invalid report_size %d\n",
354 parser->global.report_size);
355 return -1;
356 }
357 return 0;
dde5845a 358
880d29f1
JS		 359 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
360 parser->global.report_count = item_udata(item);
361 if (parser->global.report_count > HID_MAX_USAGES) {
362 dbg_hid("invalid report_count %d\n",
363 parser->global.report_count);
364 return -1;
365 }
366 return 0;
dde5845a 367
880d29f1
JS		 368 case HID_GLOBAL_ITEM_TAG_REPORT_ID:
369 parser->global.report_id = item_udata(item);
370 if (parser->global.report_id == 0) {
371 dbg_hid("report_id 0 is invalid\n");
dde5845a 372 return -1;
880d29f1
JS		 373 }
374 return 0;
375
376 default:
377 dbg_hid("unknown global tag 0x%x\n", item->tag);
378 return -1;
dde5845a
JK		 379 }
380}
381
382/*
383 * Process a local item.
384 */
385
386static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
387{
388 __u32 data;
389 unsigned n;
390
391 if (item->size == 0) {
58037eb9 392 dbg_hid("item data expected for local item\n");
dde5845a
JK		 393 return -1;
394 }
395
396 data = item_udata(item);
397
398 switch (item->tag) {
880d29f1
JS		 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;
dde5845a 411 }
880d29f1
JS		 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;
dde5845a 418 }
880d29f1
JS		 419 parser->local.delimiter_depth--;
420 }
421 return 1;
dde5845a 422
880d29f1 423 case HID_LOCAL_ITEM_TAG_USAGE:
dde5845a 424
880d29f1
JS		 425 if (parser->local.delimiter_branch > 1) {
426 dbg_hid("alternative usage ignored\n");
427 return 0;
428 }
dde5845a 429
880d29f1
JS		 430 if (item->size <= 2)
431 data = (parser->global.usage_page << 16) + data;
dde5845a 432
880d29f1 433 return hid_add_usage(parser, data);
dde5845a 434
880d29f1 435 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
dde5845a 436
880d29f1
JS		 437 if (parser->local.delimiter_branch > 1) {
438 dbg_hid("alternative usage ignored\n");
dde5845a 439 return 0;
880d29f1 440 }
dde5845a 441
880d29f1
JS		 442 if (item->size <= 2)
443 data = (parser->global.usage_page << 16) + data;
dde5845a 444
880d29f1
JS		 445 parser->local.usage_minimum = data;
446 return 0;
dde5845a 447
880d29f1 448 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
dde5845a 449
880d29f1
JS		 450 if (parser->local.delimiter_branch > 1) {
451 dbg_hid("alternative usage ignored\n");
dde5845a 452 return 0;
880d29f1 453 }
dde5845a 454
880d29f1
JS		 455 if (item->size <= 2)
456 data = (parser->global.usage_page << 16) + data;
dde5845a 457
880d29f1
JS		 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;
dde5845a
JK		 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) {
880d29f1
JS		 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;
dde5845a
JK		 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{
58037eb9 516 dbg_hid("reserved item type, tag 0x%x\n", item->tag);
dde5845a
JK		 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
85cdaf52 539static void hid_device_release(struct device *dev)
dde5845a 540{
85cdaf52
JS		 541 struct hid_device *device = container_of(dev, struct hid_device, dev);
542 unsigned i, j;
dde5845a
JK		 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);
767fe787 555 kfree(device->collection);
dde5845a
JK		 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) {
880d29f1
JS		 598 case 0:
599 return start;
dde5845a 600
880d29f1
JS		 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;
dde5845a
JK		 621 }
622
623 return NULL;
624}
625
85cdaf52
JS		 626/**
627 * hid_parse_report - parse device report
628 *
629 * @device: hid device
630 * @start: report start
631 * @size: report size
632 *
dde5845a
JK		 633 * Parse a report description into a hid_device structure. Reports are
634 * enumerated, fields are attached to these reports.
85cdaf52 635 * 0 returned on success, otherwise nonzero error value.
dde5845a 636 */
85cdaf52
JS		 637int hid_parse_report(struct hid_device *device, __u8 *start,
638 unsigned size)
dde5845a 639{
dde5845a
JK		 640 struct hid_parser *parser;
641 struct hid_item item;
642 __u8 *end;
85cdaf52 643 int ret;
dde5845a
JK		 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
c500c971
JS		 652 if (device->driver->report_fixup)
653 device->driver->report_fixup(device, start, size);
654
85cdaf52
JS		 655 device->rdesc = kmalloc(size, GFP_KERNEL);
656 if (device->rdesc == NULL)
657 return -ENOMEM;
dde5845a
JK		 658 memcpy(device->rdesc, start, size);
659 device->rsize = size;
660
85cdaf52
JS		 661 parser = vmalloc(sizeof(struct hid_parser));
662 if (!parser) {
663 ret = -ENOMEM;
664 goto err;
dde5845a 665 }
85cdaf52 666
47a80edb 667 memset(parser, 0, sizeof(struct hid_parser));
dde5845a
JK		 668 parser->device = device;
669
670 end = start + size;
85cdaf52 671 ret = -EINVAL;
dde5845a
JK		 672 while ((start = fetch_item(start, end, &item)) != NULL) {
673
674 if (item.format != HID_ITEM_FORMAT_SHORT) {
58037eb9 675 dbg_hid("unexpected long global item\n");
85cdaf52 676 goto err;
dde5845a
JK		 677 }
678
679 if (dispatch_type[item.type](parser, &item)) {
58037eb9 680 dbg_hid("item %u %u %u %u parsing failed\n",
dde5845a 681 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
85cdaf52 682 goto err;
dde5845a
JK		 683 }
684
685 if (start == end) {
686 if (parser->collection_stack_ptr) {
58037eb9 687 dbg_hid("unbalanced collection at end of report description\n");
85cdaf52 688 goto err;
dde5845a
JK		 689 }
690 if (parser->local.delimiter_depth) {
58037eb9 691 dbg_hid("unbalanced delimiter at end of report description\n");
85cdaf52 692 goto err;
dde5845a 693 }
47a80edb 694 vfree(parser);
85cdaf52 695 return 0;
dde5845a
JK		 696 }
697 }
698
58037eb9 699 dbg_hid("item fetching failed at offset %d\n", (int)(end - start));
85cdaf52 700err:
47a80edb 701 vfree(parser);
85cdaf52 702 return ret;
dde5845a 703}
229695e5 704EXPORT_SYMBOL_GPL(hid_parse_report);
dde5845a
JK		 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) {
880d29f1
JS		 715 case 8: return ((__s8)value);
716 case 16: return ((__s16)value);
717 case 32: return ((__s32)value);
dde5845a
JK		 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
c4124c9b
JK		 750 if (n > 32)
751 printk(KERN_WARNING "HID: extract() called with n (%d) > 32! (%s)\n",
752 n, current->comm);
dde5845a
JK		 753
754 report += offset >> 3; /* adjust byte index */
229695e5 755 offset &= 7; /* now only need bit offset into one byte */
c105068f 756 x = get_unaligned_le64(report);
229695e5 757 x = (x >> offset) & ((1ULL << n) - 1); /* extract bit field */
dde5845a
JK		 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{
6f0168d2 771 u64 x;
dde5845a
JK		 772 u64 m = (1ULL << n) - 1;
773
c4124c9b
JK		 774 if (n > 32)
775 printk(KERN_WARNING "HID: implement() called with n (%d) > 32! (%s)\n",
776 n, current->comm);
dde5845a 777
c4124c9b
JK		 778 if (value > m)
779 printk(KERN_WARNING "HID: implement() called with too large value %d! (%s)\n",
780 value, current->comm);
dde5845a
JK		 781 WARN_ON(value > m);
782 value &= m;
783
784 report += offset >> 3;
785 offset &= 7;
786
6f0168d2
HH		 787 x = get_unaligned_le64(report);
788 x &= ~(m << offset);
789 x |= ((u64)value) << offset;
790 put_unaligned_le64(x, report);
dde5845a
JK		 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
85cdaf52
JS		 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)
dde5845a 815{
85cdaf52
JS		 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
cd667ce2 861 hid_dump_input(hid, usage, value);
85cdaf52
JS		 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
dde5845a
JK		 873 if (hid->claimed & HID_CLAIMED_INPUT)
874 hidinput_hid_event(hid, field, usage, value);
aa938f79
JK		 875 if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
876 hid->hiddev_hid_event(hid, field, usage, value);
dde5845a
JK		 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
abdff0f7
AB		 885static void hid_input_field(struct hid_device *hid, struct hid_field *field,
886 __u8 *data, int interrupt)
dde5845a
JK		 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}
dde5845a
JK		 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;
46386b58 942 unsigned bitsused = offset + count * size;
dde5845a
JK		 943 unsigned n;
944
46386b58
SB		 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
dde5845a
JK		 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
229695e5 961void hid_output_report(struct hid_report *report, __u8 *data)
dde5845a
JK		 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}
229695e5 971EXPORT_SYMBOL_GPL(hid_output_report);
dde5845a
JK		 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
cd667ce2 983 hid_dump_input(field->report->device, field->usage + offset, value);
dde5845a
JK		 984
985 if (offset >= field->report_count) {
58037eb9 986 dbg_hid("offset (%d) exceeds report_count (%d)\n", offset, field->report_count);
dde5845a
JK		 987 return -1;
988 }
989 if (field->logical_minimum < 0) {
990 if (value != snto32(s32ton(value, size), size)) {
58037eb9 991 dbg_hid("value %d is out of range\n", value);
dde5845a
JK		 992 return -1;
993 }
994 }
995 field->value[offset] = value;
996 return 0;
997}
229695e5 998EXPORT_SYMBOL_GPL(hid_set_field);
dde5845a 999
85cdaf52
JS		 1000static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1001 const u8 *data)
aa8de2f0 1002{
aa8de2f0 1003 struct hid_report *report;
85cdaf52 1004 unsigned int n = 0; /* Normally report number is 0 */
aa8de2f0 1005
85cdaf52
JS		 1006 /* Device uses numbered reports, data[0] is report number */
1007 if (report_enum->numbered)
1008 n = *data;
aa8de2f0 1009
85cdaf52
JS		 1010 report = report_enum->report_id_hash[n];
1011 if (report == NULL)
1012 dbg_hid("undefined report_id %u received\n", n);
aa8de2f0 1013
85cdaf52
JS		 1014 return report;
1015}
aa8de2f0 1016
85cdaf52
JS		 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;
aa8de2f0 1025
85cdaf52
JS		 1026 report = hid_get_report(report_enum, data);
1027 if (!report)
1028 return;
aa8de2f0 1029
85cdaf52
JS		 1030 if (report_enum->numbered) {
1031 cdata++;
1032 csize--;
aa8de2f0
JK		 1033 }
1034
1035 rsize = ((report->size - 1) >> 3) + 1;
1036
85cdaf52
JS		 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);
aa8de2f0
JK		 1041 }
1042
1043 if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1044 hid->hiddev_report_event(hid, report);
b54ec3c1
JK		 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 }
aa8de2f0 1052
85cdaf52
JS		 1053 for (a = 0; a < report->maxfield; a++)
1054 hid_input_field(hid, report->field[a], cdata, interrupt);
aa8de2f0
JK		 1055
1056 if (hid->claimed & HID_CLAIMED_INPUT)
1057 hidinput_report_event(hid, report);
85cdaf52
JS		 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
ff9b00a2 1068 * @interrupt: distinguish between interrupt and control transfers
85cdaf52
JS		 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{
76c317d6
JL		 1074 struct hid_report_enum *report_enum;
1075 struct hid_driver *hdrv;
85cdaf52 1076 struct hid_report *report;
cd667ce2 1077 char *buf;
85cdaf52
JS		 1078 unsigned int i;
1079 int ret;
1080
1081 if (!hid || !hid->driver)
1082 return -ENODEV;
76c317d6
JL		 1083 report_enum = hid->report_enum + type;
1084 hdrv = hid->driver;
85cdaf52
JS		 1085
1086 if (!size) {
1087 dbg_hid("empty report\n");
1088 return -1;
1089 }
1090
d1ff6522 1091 buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
cd667ce2
JK		 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);
85cdaf52
JS		 1101
1102 report = hid_get_report(report_enum, data);
55dba524
JK		 1103 if (!report) {
1104 kfree(buf);
85cdaf52 1105 return -1;
55dba524 1106 }
85cdaf52
JS		 1107
1108 /* dump the report */
cd667ce2
JK		 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");
85cdaf52 1118
cd667ce2 1119 kfree(buf);
85cdaf52 1120
cd667ce2 1121nomem:
85cdaf52
JS		 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);
aa8de2f0
JK		 1129
1130 return 0;
1131}
1132EXPORT_SYMBOL_GPL(hid_input_report);
1133
0f37cd03
JK		 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[] = {
c0bd6a42
RH		 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) },
0f37cd03
JK		 1155 { }
1156};
1157
1158static bool hid_hiddev(struct hid_device *hdev)
1159{
1160 return !!hid_match_id(hdev, hid_hiddev_list);
1161}
1162
93c10132
JS		 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;
0f37cd03
JK		 1176 if (hid_hiddev(hdev))
1177 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
93c10132
JS		 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
c4c259bc
JK		 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
bae7eb33 1250/* a list of devices for which there is a specialized driver on HID bus */
85cdaf52 1251static const struct hid_device_id hid_blacklist[] = {
14a21cd4
JS		 1252 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1253 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
df9bcace 1254 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) },
8c19a515
JS		 1255 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1256 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1257 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1258 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1259 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1260 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1261 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1262 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1263 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1264 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1265 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1266 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1267 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
fef3f571
RF		 1268 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1269 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1270 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
8c19a515
JS		 1271 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1272 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1273 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1274 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1275 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1276 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
ee8a1a0a
JS		 1277 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1278 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1279 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
8c19a515
JS		 1280 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1281 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1282 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1283 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1284 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1285 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
a96d6ef3
HR		 1286 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1287 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1288 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
23aeb61e
CSW		 1289 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1290 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1291 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
8c19a515
JS		 1292 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1293 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
b5635b12 1294 { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
3b239cd7 1295 { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
fcfacfd3 1296 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
0f221320
JS		 1297 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1298 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
e8d0eab4 1299 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
0f221320 1300 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
3f866fbd 1301 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1f243e30 1302 { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
5181e594 1303 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
578f3a35 1304 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
5181e594 1305 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
42859e0b 1306 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
949f8fef 1307 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1e093206 1308 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
fdf93aa3 1309 { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
79422741 1310 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
b5635b12 1311 { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
5f22a799
JS		 1312 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1313 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1314 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1315 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1316 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1317 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1318 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
5f22a799
JS		 1319 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1320 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
5f22a799
JS		 1321 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1322 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
606bd0a8
JS		 1323 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1324 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1325 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
fd30ea8c 1326 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
606bd0a8
JS		 1327 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1328 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1329 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
243b706d 1330 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
606bd0a8 1331 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
24985cf6
JK		 1332 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1333 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
78a849a6
JS		 1334 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1335 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1336 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1337 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1338 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
3b8006e5 1339 { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
94011f93 1340 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1e762532 1341 { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
980a3da6 1342 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
bd28ce00 1343 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
f9ce7c28 1344 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
cc6e0bbb 1345 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
90231e7e 1346 { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
daedb3d6
AH		 1347 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1348 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
7a84b133
RAG		 1349 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1350 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
daedb3d6
AH		 1351 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1352 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
f14f526d 1353 { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
711a680e 1354 { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
fac733f0 1355 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
ca2dcd40 1356 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
daedb3d6
AH		 1357 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1358 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
8c19a515 1359
78a849a6 1360 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
85cdaf52
JS		 1361 { }
1362};
1363
3a6f82f7
JS		 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
85cdaf52
JS		 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
3a6f82f7 1449 if (!hid_match_device(hdev, hdrv))
85cdaf52
JS		 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) {
3a6f82f7 1468 id = hid_match_device(hdev, hdrv);
c500c971
JS		 1469 if (id == NULL)
1470 return -ENODEV;
85cdaf52 1471
c500c971
JS		 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)
93c10132 1478 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
85cdaf52 1479 }
c500c971
JS		 1480 if (ret)
1481 hdev->driver = NULL;
85cdaf52
JS		 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);
c500c971
JS		 1494 else /* default remove */
1495 hid_hw_stop(hdev);
85cdaf52
JS		 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
bae7eb33 1534/* a list of devices that shouldn't be handled by HID core at all */
d458a9df
JS		 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)},
ac2d9899 1549 { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM2)},
62a56582 1550 { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
d458a9df
JS		 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) },
5f6108cf 1557 { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
d458a9df
JS		 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) },
70c66567 1561 { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
d458a9df
JS		 1562 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
1563 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
1564 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0003) },
1565 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
1566 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
1567 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
1568 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
1569 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
1570 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
1571 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
1572 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
1573 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
1574 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
1575 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
1576 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
1577 { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
1578 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
1579 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
1580 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
1581 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
1582 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
1583 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
1584 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
1585 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
1586 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
1587 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
1588 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
1589 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
1590 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
1591 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
1592 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
1593 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
1594 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
1595 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
1596 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
1597 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
1598 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
1599 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
1600 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
1601 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
1602 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
1603 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
1604 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
1605 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
1606 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
1607 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
1608 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
1609 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
1610 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
1611 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
1612 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
1613 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
1614 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
1615 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
1616 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
1617 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
1618 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
1619 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
1620 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
1621 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
1622 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
1623 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
1624 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
1625 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
1626 { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
1627 { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
c91c21c5 1628 { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
d458a9df 1629 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
eb8141cc 1630 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
d458a9df
JS		 1631 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
1632 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
1633 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
1634 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
1635 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
1636 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
1637 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY1) },
1638 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
1639 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
1640 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
1641 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
1642 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
1643 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
1644 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
1645 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
1646 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
d458a9df
JS		 1647 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
1648 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
1649 { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
1650 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
1651 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
1652 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
1653 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
1654 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
1655 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
1656 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
1657 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
1658 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
1659 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
1660 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
1661 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
1662 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
1663 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
4cfae3e8 1664 { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
35cfd1d9 1665 { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
d1d3a5f6
RC		 1666 { HID_USB_DEVICE(USB_VENDOR_ID_TENX, USB_DEVICE_ID_TENX_IBUDDY1) },
1667 { HID_USB_DEVICE(USB_VENDOR_ID_TENX, USB_DEVICE_ID_TENX_IBUDDY2) },
d458a9df
JS		 1668 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
1669 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
1670 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
1671 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
1672 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
1673 { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
1674 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
1675 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
1676 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
1677 { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
1678 { }
1679};
1680
b4d8e473
JS		 1681/**
1682 * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
1683 *
1684 * There are composite devices for which we want to ignore only a certain
1685 * interface. This is a list of devices for which only the mouse interface will
1686 * be ignored. This allows a dedicated driver to take care of the interface.
1687 */
1688static const struct hid_device_id hid_mouse_ignore_list[] = {
1689 /* appletouch driver */
1690 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1691 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1692 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1693 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1694 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1695 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1696 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1697 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1698 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1699 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1700 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1701 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1702 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1703 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1704 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1705 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1706 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1707 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1708 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1709 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
ac26fca3
JK		 1710 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1711 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1712 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
b4d8e473
JS		 1713 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1714 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1715 { }
1716};
1717
d458a9df
JS		 1718static bool hid_ignore(struct hid_device *hdev)
1719{
1720 switch (hdev->vendor) {
1721 case USB_VENDOR_ID_CODEMERCS:
1722 /* ignore all Code Mercenaries IOWarrior devices */
1723 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
1724 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
1725 return true;
1726 break;
1727 case USB_VENDOR_ID_LOGITECH:
1728 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
1729 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
1730 return true;
1731 break;
31f7fd79
JW		 1732 case USB_VENDOR_ID_SOUNDGRAPH:
1733 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
1734 hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
1735 return true;
1736 break;
d458a9df
JS		 1737 }
1738
b4d8e473
JS		 1739 if (hdev->type == HID_TYPE_USBMOUSE &&
1740 hid_match_id(hdev, hid_mouse_ignore_list))
1741 return true;
1742
d458a9df
JS		 1743 return !!hid_match_id(hdev, hid_ignore_list);
1744}
1745
85cdaf52
JS		 1746int hid_add_device(struct hid_device *hdev)
1747{
1748 static atomic_t id = ATOMIC_INIT(0);
1749 int ret;
1750
1751 if (WARN_ON(hdev->status & HID_STAT_ADDED))
1752 return -EBUSY;
1753
d458a9df
JS		 1754 /* we need to kill them here, otherwise they will stay allocated to
1755 * wait for coming driver */
1756 if (hid_ignore(hdev))
1757 return -ENODEV;
1758
6bbe586f
KS		 1759 /* XXX hack, any other cleaner solution after the driver core
1760 * is converted to allow more than 20 bytes as the device name? */
1761 dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
1762 hdev->vendor, hdev->product, atomic_inc_return(&id));
85cdaf52
JS		 1763
1764 ret = device_add(&hdev->dev);
1765 if (!ret)
1766 hdev->status |= HID_STAT_ADDED;
1767
a635f9dd
JK		 1768 hid_debug_register(hdev, dev_name(&hdev->dev));
1769
85cdaf52
JS		 1770 return ret;
1771}
1772EXPORT_SYMBOL_GPL(hid_add_device);
1773
1774/**
1775 * hid_allocate_device - allocate new hid device descriptor
1776 *
1777 * Allocate and initialize hid device, so that hid_destroy_device might be
1778 * used to free it.
1779 *
1780 * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
1781 * error value.
1782 */
1783struct hid_device *hid_allocate_device(void)
1784{
1785 struct hid_device *hdev;
1786 unsigned int i;
1787 int ret = -ENOMEM;
1788
1789 hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
1790 if (hdev == NULL)
1791 return ERR_PTR(ret);
1792
1793 device_initialize(&hdev->dev);
1794 hdev->dev.release = hid_device_release;
1795 hdev->dev.bus = &hid_bus_type;
1796
1797 hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
1798 sizeof(struct hid_collection), GFP_KERNEL);
1799 if (hdev->collection == NULL)
1800 goto err;
1801 hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
1802
1803 for (i = 0; i < HID_REPORT_TYPES; i++)
1804 INIT_LIST_HEAD(&hdev->report_enum[i].report_list);
1805
cd667ce2
JK		 1806 init_waitqueue_head(&hdev->debug_wait);
1807 INIT_LIST_HEAD(&hdev->debug_list);
1808
85cdaf52
JS		 1809 return hdev;
1810err:
1811 put_device(&hdev->dev);
1812 return ERR_PTR(ret);
1813}
1814EXPORT_SYMBOL_GPL(hid_allocate_device);
1815
1816static void hid_remove_device(struct hid_device *hdev)
1817{
1818 if (hdev->status & HID_STAT_ADDED) {
1819 device_del(&hdev->dev);
a635f9dd 1820 hid_debug_unregister(hdev);
85cdaf52
JS		 1821 hdev->status &= ~HID_STAT_ADDED;
1822 }
1823}
1824
1825/**
1826 * hid_destroy_device - free previously allocated device
1827 *
1828 * @hdev: hid device
1829 *
1830 * If you allocate hid_device through hid_allocate_device, you should ever
1831 * free by this function.
1832 */
1833void hid_destroy_device(struct hid_device *hdev)
1834{
1835 hid_remove_device(hdev);
1836 put_device(&hdev->dev);
1837}
1838EXPORT_SYMBOL_GPL(hid_destroy_device);
1839
1840int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
1841 const char *mod_name)
1842{
3a6f82f7
JS		 1843 int ret;
1844
85cdaf52
JS		 1845 hdrv->driver.name = hdrv->name;
1846 hdrv->driver.bus = &hid_bus_type;
1847 hdrv->driver.owner = owner;
1848 hdrv->driver.mod_name = mod_name;
1849
3a6f82f7
JS		 1850 INIT_LIST_HEAD(&hdrv->dyn_list);
1851 spin_lock_init(&hdrv->dyn_lock);
1852
1853 ret = driver_register(&hdrv->driver);
1854 if (ret)
1855 return ret;
1856
1857 ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
1858 if (ret)
1859 driver_unregister(&hdrv->driver);
1860
1861 return ret;
85cdaf52
JS		 1862}
1863EXPORT_SYMBOL_GPL(__hid_register_driver);
1864
1865void hid_unregister_driver(struct hid_driver *hdrv)
1866{
3a6f82f7 1867 driver_remove_file(&hdrv->driver, &driver_attr_new_id);
85cdaf52 1868 driver_unregister(&hdrv->driver);
3a6f82f7 1869 hid_free_dynids(hdrv);
85cdaf52
JS		 1870}
1871EXPORT_SYMBOL_GPL(hid_unregister_driver);
1872
0361a28d
ON		 1873int hid_check_keys_pressed(struct hid_device *hid)
1874{
1875 struct hid_input *hidinput;
1876 int i;
1877
e5288eb5
JK		 1878 if (!(hid->claimed & HID_CLAIMED_INPUT))
1879 return 0;
1880
0361a28d
ON		 1881 list_for_each_entry(hidinput, &hid->inputs, list) {
1882 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
1883 if (hidinput->input->key[i])
1884 return 1;
1885 }
1886
1887 return 0;
1888}
1889
1890EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
1891
86166b7b
JK		 1892static int __init hid_init(void)
1893{
85cdaf52
JS		 1894 int ret;
1895
a635f9dd 1896 if (hid_debug)
cd667ce2
JK		 1897 printk(KERN_WARNING "HID: hid_debug is now used solely for parser and driver debugging.\n"
1898 "HID: debugfs is now used for inspecting the device (report descriptor, reports)\n");
a635f9dd 1899
85cdaf52
JS		 1900 ret = bus_register(&hid_bus_type);
1901 if (ret) {
1902 printk(KERN_ERR "HID: can't register hid bus\n");
1903 goto err;
1904 }
1905
1906 ret = hidraw_init();
1907 if (ret)
1908 goto err_bus;
1909
a635f9dd
JK		 1910 hid_debug_init();
1911
85cdaf52
JS		 1912 return 0;
1913err_bus:
1914 bus_unregister(&hid_bus_type);
1915err:
1916 return ret;
86166b7b
JK		 1917}
1918
1919static void __exit hid_exit(void)
1920{
a635f9dd 1921 hid_debug_exit();
86166b7b 1922 hidraw_exit();
85cdaf52 1923 bus_unregister(&hid_bus_type);
86166b7b
JK		 1924}
1925
1926module_init(hid_init);
1927module_exit(hid_exit);
1928
88adb72b
JK		 1929MODULE_AUTHOR("Andreas Gal");
1930MODULE_AUTHOR("Vojtech Pavlik");
1931MODULE_AUTHOR("Jiri Kosina");
aa938f79
JK		 1932MODULE_LICENSE(DRIVER_LICENSE);
1933
Linux 6.x block layer and io_uring tree(s)