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- Committer: Bazaar Package Importer
- Author(s): Ron Lee
- Date: 2004-12-10 16:12:07 UTC
- Revision ID: james.westby@ubuntu.com-20041210161207-cw8urijtjsqvk2e3
Tags: upstream-0.6.6
Import upstream version 0.6.6
- files added:
- linuxwacom
- linuxwacom/docs
- linuxwacom/docs/docs_files
- linuxwacom/src
- linuxwacom/src/2.4
- linuxwacom/src/2.4.22
- linuxwacom/src/2.6
- linuxwacom/src/2.6.10
- linuxwacom/src/2.6.2
- linuxwacom/src/2.6.3
- linuxwacom/src/2.6.4
- linuxwacom/src/2.6.5
- linuxwacom/src/2.6.6
- linuxwacom/src/2.6.7
- linuxwacom/src/2.6.8
- linuxwacom/src/2.6.9
- linuxwacom/src/wacomxi
added
removed
linuxwacom/src/2.6.8/hid-core.c
1
/*
2
* USB HID support for Linux
3
*
4
* Copyright (c) 1999 Andreas Gal
5
* Copyright (c) 2000-2001 Vojtech Pavlik <vojtech@suse.cz>
6
*/
7
8
/*
9
* This program is free software; you can redistribute it and/or modify it
10
* under the terms of the GNU General Public License as published by the Free
11
* Software Foundation; either version 2 of the License, or (at your option)
12
* any later version.
13
*/
14
15
#include <linux/module.h>
16
#include <linux/slab.h>
17
#include <linux/init.h>
18
#include <linux/kernel.h>
19
#include <linux/sched.h>
20
#include <linux/list.h>
21
#include <linux/mm.h>
22
#include <linux/smp_lock.h>
23
#include <linux/spinlock.h>
24
#include <asm/unaligned.h>
25
#include <asm/byteorder.h>
26
#include <linux/input.h>
27
28
#undef DEBUG
29
#undef DEBUG_DATA
30
31
#include <linux/usb.h>
32
33
#include "hid.h"
34
#include <linux/hiddev.h>
35
36
/*
37
* Version Information
38
*/
39
40
#define DRIVER_VERSION "v2.0 - 2.6.8-pc-0.1"
41
#define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik"
42
#define DRIVER_DESC "USB HID core driver"
43
#define DRIVER_LICENSE "GPL"
44
45
static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
46
"Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
47
48
/*
49
* Register a new report for a device.
50
*/
51
52
static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
53
{
54
struct hid_report_enum *report_enum = device->report_enum + type;
55
struct hid_report *report;
56
57
if (report_enum->report_id_hash[id])
58
return report_enum->report_id_hash[id];
59
60
if (!(report = kmalloc(sizeof(struct hid_report), GFP_KERNEL)))
61
return NULL;
62
memset(report, 0, sizeof(struct hid_report));
63
64
if (id != 0)
65
report_enum->numbered = 1;
66
67
report->id = id;
68
report->type = type;
69
report->size = 0;
70
report->device = device;
71
report_enum->report_id_hash[id] = report;
72
73
list_add_tail(&report->list, &report_enum->report_list);
74
75
return report;
76
}
77
78
/*
79
* Register a new field for this report.
80
*/
81
82
static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
83
{
84
struct hid_field *field;
85
86
if (report->maxfield == HID_MAX_FIELDS) {
87
dbg("too many fields in report");
88
return NULL;
89
}
90
91
if (!(field = kmalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
92
+ values * sizeof(unsigned), GFP_KERNEL))) return NULL;
93
94
memset(field, 0, sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
95
+ values * sizeof(unsigned));
96
97
report->field[report->maxfield++] = field;
98
field->usage = (struct hid_usage *)(field + 1);
99
field->value = (unsigned *)(field->usage + usages);
100
field->report = report;
101
102
return field;
103
}
104
105
/*
106
* Open a collection. The type/usage is pushed on the stack.
107
*/
108
109
static int open_collection(struct hid_parser *parser, unsigned type)
110
{
111
struct hid_collection *collection;
112
unsigned usage;
113
114
usage = parser->local.usage[0];
115
116
if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
117
dbg("collection stack overflow");
118
return -1;
119
}
120
121
if (parser->device->maxcollection == parser->device->collection_size) {
122
collection = kmalloc(sizeof(struct hid_collection) *
123
parser->device->collection_size * 2,
124
GFP_KERNEL);
125
if (collection == NULL) {
126
dbg("failed to reallocate collection array");
127
return -1;
128
}
129
memcpy(collection, parser->device->collection,
130
sizeof(struct hid_collection) *
131
parser->device->collection_size);
132
memset(collection + parser->device->collection_size, 0,
133
sizeof(struct hid_collection) *
134
parser->device->collection_size);
135
kfree(parser->device->collection);
136
parser->device->collection = collection;
137
parser->device->collection_size *= 2;
138
}
139
140
parser->collection_stack[parser->collection_stack_ptr++] =
141
parser->device->maxcollection;
142
143
collection = parser->device->collection +
144
parser->device->maxcollection++;
145
collection->type = type;
146
collection->usage = usage;
147
collection->level = parser->collection_stack_ptr - 1;
148
149
if (type == HID_COLLECTION_APPLICATION)
150
parser->device->maxapplication++;
151
152
return 0;
153
}
154
155
/*
156
* Close a collection.
157
*/
158
159
static int close_collection(struct hid_parser *parser)
160
{
161
if (!parser->collection_stack_ptr) {
162
dbg("collection stack underflow");
163
return -1;
164
}
165
parser->collection_stack_ptr--;
166
return 0;
167
}
168
169
/*
170
* Climb up the stack, search for the specified collection type
171
* and return the usage.
172
*/
173
174
static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
175
{
176
int n;
177
for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
178
if (parser->device->collection[parser->collection_stack[n]].type == type)
179
return parser->device->collection[parser->collection_stack[n]].usage;
180
return 0; /* we know nothing about this usage type */
181
}
182
183
/*
184
* Add a usage to the temporary parser table.
185
*/
186
187
static int hid_add_usage(struct hid_parser *parser, unsigned usage)
188
{
189
if (parser->local.usage_index >= HID_MAX_USAGES) {
190
dbg("usage index exceeded");
191
return -1;
192
}
193
parser->local.usage[parser->local.usage_index] = usage;
194
parser->local.collection_index[parser->local.usage_index] =
195
parser->collection_stack_ptr ?
196
parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
197
parser->local.usage_index++;
198
return 0;
199
}
200
201
/*
202
* Register a new field for this report.
203
*/
204
205
static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
206
{
207
struct hid_report *report;
208
struct hid_field *field;
209
int usages;
210
unsigned offset;
211
int i;
212
213
if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
214
dbg("hid_register_report failed");
215
return -1;
216
}
217
218
if (parser->global.logical_maximum < parser->global.logical_minimum) {
219
dbg("logical range invalid %d %d", parser->global.logical_minimum, parser->global.logical_maximum);
220
return -1;
221
}
222
usages = parser->local.usage_index;
223
224
offset = report->size;
225
report->size += parser->global.report_size * parser->global.report_count;
226
227
if (usages < parser->global.report_count)
228
usages = parser->global.report_count;
229
230
if (usages == 0)
231
return 0; /* ignore padding fields */
232
233
if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
234
return 0;
235
236
field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
237
field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
238
field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
239
240
for (i = 0; i < usages; i++) {
241
int j = i;
242
/* Duplicate the last usage we parsed if we have excess values */
243
if (i >= parser->local.usage_index)
244
j = parser->local.usage_index - 1;
245
field->usage[i].hid = parser->local.usage[j];
246
field->usage[i].collection_index =
247
parser->local.collection_index[j];
248
}
249
250
field->maxusage = usages;
251
field->flags = flags;
252
field->report_offset = offset;
253
field->report_type = report_type;
254
field->report_size = parser->global.report_size;
255
field->report_count = parser->global.report_count;
256
field->logical_minimum = parser->global.logical_minimum;
257
field->logical_maximum = parser->global.logical_maximum;
258
field->physical_minimum = parser->global.physical_minimum;
259
field->physical_maximum = parser->global.physical_maximum;
260
field->unit_exponent = parser->global.unit_exponent;
261
field->unit = parser->global.unit;
262
263
return 0;
264
}
265
266
/*
267
* Read data value from item.
268
*/
269
270
static __inline__ __u32 item_udata(struct hid_item *item)
271
{
272
switch (item->size) {
273
case 1: return item->data.u8;
274
case 2: return item->data.u16;
275
case 4: return item->data.u32;
276
}
277
return 0;
278
}
279
280
static __inline__ __s32 item_sdata(struct hid_item *item)
281
{
282
switch (item->size) {
283
case 1: return item->data.s8;
284
case 2: return item->data.s16;
285
case 4: return item->data.s32;
286
}
287
return 0;
288
}
289
290
/*
291
* Process a global item.
292
*/
293
294
static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
295
{
296
switch (item->tag) {
297
298
case HID_GLOBAL_ITEM_TAG_PUSH:
299
300
if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
301
dbg("global enviroment stack overflow");
302
return -1;
303
}
304
305
memcpy(parser->global_stack + parser->global_stack_ptr++,
306
&parser->global, sizeof(struct hid_global));
307
return 0;
308
309
case HID_GLOBAL_ITEM_TAG_POP:
310
311
if (!parser->global_stack_ptr) {
312
dbg("global enviroment stack underflow");
313
return -1;
314
}
315
316
memcpy(&parser->global, parser->global_stack + --parser->global_stack_ptr,
317
sizeof(struct hid_global));
318
return 0;
319
320
case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
321
parser->global.usage_page = item_udata(item);
322
return 0;
323
324
case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
325
parser->global.logical_minimum = item_sdata(item);
326
return 0;
327
328
case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
329
if (parser->global.logical_minimum < 0)
330
parser->global.logical_maximum = item_sdata(item);
331
else
332
parser->global.logical_maximum = item_udata(item);
333
return 0;
334
335
case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
336
parser->global.physical_minimum = item_sdata(item);
337
return 0;
338
339
case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
340
if (parser->global.physical_minimum < 0)
341
parser->global.physical_maximum = item_sdata(item);
342
else
343
parser->global.physical_maximum = item_udata(item);
344
return 0;
345
346
case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
347
parser->global.unit_exponent = item_sdata(item);
348
return 0;
349
350
case HID_GLOBAL_ITEM_TAG_UNIT:
351
parser->global.unit = item_udata(item);
352
return 0;
353
354
case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
355
if ((parser->global.report_size = item_udata(item)) > 32) {
356
dbg("invalid report_size %d", parser->global.report_size);
357
return -1;
358
}
359
return 0;
360
361
case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
362
if ((parser->global.report_count = item_udata(item)) > HID_MAX_USAGES) {
363
dbg("invalid report_count %d", parser->global.report_count);
364
return -1;
365
}
366
return 0;
367
368
case HID_GLOBAL_ITEM_TAG_REPORT_ID:
369
if ((parser->global.report_id = item_udata(item)) == 0) {
370
dbg("report_id 0 is invalid");
371
return -1;
372
}
373
return 0;
374
375
default:
376
dbg("unknown global tag 0x%x", item->tag);
377
return -1;
378
}
379
}
380
381
/*
382
* Process a local item.
383
*/
384
385
static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
386
{
387
__u32 data;
388
unsigned n;
389
390
if (item->size == 0) {
391
dbg("item data expected for local item");
392
return -1;
393
}
394
395
data = item_udata(item);
396
397
switch (item->tag) {
398
399
case HID_LOCAL_ITEM_TAG_DELIMITER:
400
401
if (data) {
402
/*
403
* We treat items before the first delimiter
404
* as global to all usage sets (branch 0).
405
* In the moment we process only these global
406
* items and the first delimiter set.
407
*/
408
if (parser->local.delimiter_depth != 0) {
409
dbg("nested delimiters");
410
return -1;
411
}
412
parser->local.delimiter_depth++;
413
parser->local.delimiter_branch++;
414
} else {
415
if (parser->local.delimiter_depth < 1) {
416
dbg("bogus close delimiter");
417
return -1;
418
}
419
parser->local.delimiter_depth--;
420
}
421
return 1;
422
423
case HID_LOCAL_ITEM_TAG_USAGE:
424
425
if (parser->local.delimiter_branch > 1) {
426
dbg("alternative usage ignored");
427
return 0;
428
}
429
430
if (item->size <= 2)
431
data = (parser->global.usage_page << 16) + data;
432
433
return hid_add_usage(parser, data);
434
435
case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
436
437
if (parser->local.delimiter_branch > 1) {
438
dbg("alternative usage ignored");
439
return 0;
440
}
441
442
if (item->size <= 2)
443
data = (parser->global.usage_page << 16) + data;
444
445
parser->local.usage_minimum = data;
446
return 0;
447
448
case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
449
450
if (parser->local.delimiter_branch > 1) {
451
dbg("alternative usage ignored");
452
return 0;
453
}
454
455
if (item->size <= 2)
456
data = (parser->global.usage_page << 16) + data;
457
458
for (n = parser->local.usage_minimum; n <= data; n++)
459
if (hid_add_usage(parser, n)) {
460
dbg("hid_add_usage failed\n");
461
return -1;
462
}
463
return 0;
464
465
default:
466
467
dbg("unknown local item tag 0x%x", item->tag);
468
return 0;
469
}
470
return 0;
471
}
472
473
/*
474
* Process a main item.
475
*/
476
477
static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
478
{
479
__u32 data;
480
int ret;
481
482
data = item_udata(item);
483
484
switch (item->tag) {
485
case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
486
ret = open_collection(parser, data & 0xff);
487
break;
488
case HID_MAIN_ITEM_TAG_END_COLLECTION:
489
ret = close_collection(parser);
490
break;
491
case HID_MAIN_ITEM_TAG_INPUT:
492
ret = hid_add_field(parser, HID_INPUT_REPORT, data);
493
break;
494
case HID_MAIN_ITEM_TAG_OUTPUT:
495
ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
496
break;
497
case HID_MAIN_ITEM_TAG_FEATURE:
498
ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
499
break;
500
default:
501
dbg("unknown main item tag 0x%x", item->tag);
502
ret = 0;
503
}
504
505
memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */
506
507
return ret;
508
}
509
510
/*
511
* Process a reserved item.
512
*/
513
514
static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
515
{
516
dbg("reserved item type, tag 0x%x", item->tag);
517
return 0;
518
}
519
520
/*
521
* Free a report and all registered fields. The field->usage and
522
* field->value table's are allocated behind the field, so we need
523
* only to free(field) itself.
524
*/
525
526
static void hid_free_report(struct hid_report *report)
527
{
528
unsigned n;
529
530
for (n = 0; n < report->maxfield; n++)
531
kfree(report->field[n]);
532
kfree(report);
533
}
534
535
/*
536
* Free a device structure, all reports, and all fields.
537
*/
538
539
static void hid_free_device(struct hid_device *device)
540
{
541
unsigned i,j;
542
543
hid_ff_exit(device);
544
545
for (i = 0; i < HID_REPORT_TYPES; i++) {
546
struct hid_report_enum *report_enum = device->report_enum + i;
547
548
for (j = 0; j < 256; j++) {
549
struct hid_report *report = report_enum->report_id_hash[j];
550
if (report)
551
hid_free_report(report);
552
}
553
}
554
555
if (device->rdesc)
556
kfree(device->rdesc);
557
kfree(device);
558
}
559
560
/*
561
* Fetch a report description item from the data stream. We support long
562
* items, though they are not used yet.
563
*/
564
565
static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
566
{
567
u8 b;
568
569
if ((end - start) <= 0)
570
return NULL;
571
572
b = *start++;
573
574
item->type = (b >> 2) & 3;
575
item->tag = (b >> 4) & 15;
576
577
if (item->tag == HID_ITEM_TAG_LONG) {
578
579
item->format = HID_ITEM_FORMAT_LONG;
580
581
if ((end - start) < 2)
582
return NULL;
583
584
item->size = *start++;
585
item->tag = *start++;
586
587
if ((end - start) < item->size)
588
return NULL;
589
590
item->data.longdata = start;
591
start += item->size;
592
return start;
593
}
594
595
item->format = HID_ITEM_FORMAT_SHORT;
596
item->size = b & 3;
597
598
switch (item->size) {
599
600
case 0:
601
return start;
602
603
case 1:
604
if ((end - start) < 1)
605
return NULL;
606
item->data.u8 = *start++;
607
return start;
608
609
case 2:
610
if ((end - start) < 2)
611
return NULL;
612
item->data.u16 = le16_to_cpu(get_unaligned((__u16*)start));
613
start = (__u8 *)((__u16 *)start + 1);
614
return start;
615
616
case 3:
617
item->size++;
618
if ((end - start) < 4)
619
return NULL;
620
item->data.u32 = le32_to_cpu(get_unaligned((__u32*)start));
621
start = (__u8 *)((__u32 *)start + 1);
622
return start;
623
}
624
625
return NULL;
626
}
627
628
/*
629
* Parse a report description into a hid_device structure. Reports are
630
* enumerated, fields are attached to these reports.
631
*/
632
633
static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
634
{
635
struct hid_device *device;
636
struct hid_parser *parser;
637
struct hid_item item;
638
__u8 *end;
639
unsigned i;
640
static int (*dispatch_type[])(struct hid_parser *parser,
641
struct hid_item *item) = {
642
hid_parser_main,
643
hid_parser_global,
644
hid_parser_local,
645
hid_parser_reserved
646
};
647
648
if (!(device = kmalloc(sizeof(struct hid_device), GFP_KERNEL)))
649
return NULL;
650
memset(device, 0, sizeof(struct hid_device));
651
652
if (!(device->collection =kmalloc(sizeof(struct hid_collection) *
653
HID_DEFAULT_NUM_COLLECTIONS, GFP_KERNEL))) {
654
kfree(device);
655
return NULL;
656
}
657
memset(device->collection, 0, sizeof(struct hid_collection) *
658
HID_DEFAULT_NUM_COLLECTIONS);
659
device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
660
661
for (i = 0; i < HID_REPORT_TYPES; i++)
662
INIT_LIST_HEAD(&device->report_enum[i].report_list);
663
664
if (!(device->rdesc = (__u8 *)kmalloc(size, GFP_KERNEL))) {
665
kfree(device->collection);
666
kfree(device);
667
return NULL;
668
}
669
memcpy(device->rdesc, start, size);
670
device->rsize = size;
671
672
if (!(parser = kmalloc(sizeof(struct hid_parser), GFP_KERNEL))) {
673
kfree(device->rdesc);
674
kfree(device->collection);
675
kfree(device);
676
return NULL;
677
}
678
memset(parser, 0, sizeof(struct hid_parser));
679
parser->device = device;
680
681
end = start + size;
682
while ((start = fetch_item(start, end, &item)) != 0) {
683
684
if (item.format != HID_ITEM_FORMAT_SHORT) {
685
dbg("unexpected long global item");
686
kfree(device->collection);
687
hid_free_device(device);
688
kfree(parser);
689
return NULL;
690
}
691
692
if (dispatch_type[item.type](parser, &item)) {
693
dbg("item %u %u %u %u parsing failed\n",
694
item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
695
kfree(device->collection);
696
hid_free_device(device);
697
kfree(parser);
698
return NULL;
699
}
700
701
if (start == end) {
702
if (parser->collection_stack_ptr) {
703
dbg("unbalanced collection at end of report description");
704
kfree(device->collection);
705
hid_free_device(device);
706
kfree(parser);
707
return NULL;
708
}
709
if (parser->local.delimiter_depth) {
710
dbg("unbalanced delimiter at end of report description");
711
kfree(device->collection);
712
hid_free_device(device);
713
kfree(parser);
714
return NULL;
715
}
716
kfree(parser);
717
return device;
718
}
719
}
720
721
dbg("item fetching failed at offset %d\n", (int)(end - start));
722
kfree(device->collection);
723
hid_free_device(device);
724
kfree(parser);
725
return NULL;
726
}
727
728
/*
729
* Convert a signed n-bit integer to signed 32-bit integer. Common
730
* cases are done through the compiler, the screwed things has to be
731
* done by hand.
732
*/
733
734
static __inline__ __s32 snto32(__u32 value, unsigned n)
735
{
736
switch (n) {
737
case 8: return ((__s8)value);
738
case 16: return ((__s16)value);
739
case 32: return ((__s32)value);
740
}
741
return value & (1 << (n - 1)) ? value | (-1 << n) : value;
742
}
743
744
/*
745
* Convert a signed 32-bit integer to a signed n-bit integer.
746
*/
747
748
static __inline__ __u32 s32ton(__s32 value, unsigned n)
749
{
750
__s32 a = value >> (n - 1);
751
if (a && a != -1)
752
return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
753
return value & ((1 << n) - 1);
754
}
755
756
/*
757
* Extract/implement a data field from/to a report.
758
*/
759
760
static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
761
{
762
report += (offset >> 5) << 2; offset &= 31;
763
return (le64_to_cpu(get_unaligned((__u64*)report)) >> offset) & ((1 << n) - 1);
764
}
765
766
static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
767
{
768
report += (offset >> 5) << 2; offset &= 31;
769
put_unaligned((get_unaligned((__u64*)report)
770
& cpu_to_le64(~((((__u64) 1 << n) - 1) << offset)))
771
| cpu_to_le64((__u64)value << offset), (__u64*)report);
772
}
773
774
/*
775
* Search an array for a value.
776
*/
777
778
static __inline__ int search(__s32 *array, __s32 value, unsigned n)
779
{
780
while (n--) {
781
if (*array++ == value)
782
return 0;
783
}
784
return -1;
785
}
786
787
static void hid_process_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs)
788
{
789
hid_dump_input(usage, value);
790
if (hid->claimed & HID_CLAIMED_INPUT)
791
hidinput_hid_event(hid, field, usage, value, regs);
792
if (hid->claimed & HID_CLAIMED_HIDDEV)
793
hiddev_hid_event(hid, field, usage, value, regs);
794
}
795
796
/*
797
* Analyse a received field, and fetch the data from it. The field
798
* content is stored for next report processing (we do differential
799
* reporting to the layer).
800
*/
801
802
static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, struct pt_regs *regs)
803
{
804
unsigned n;
805
unsigned count = field->report_count;
806
unsigned offset = field->report_offset;
807
unsigned size = field->report_size;
808
__s32 min = field->logical_minimum;
809
__s32 max = field->logical_maximum;
810
__s32 *value;
811
812
value = kmalloc(sizeof(__s32)*count, GFP_ATOMIC);
813
if (!value)
814
return;
815
816
for (n = 0; n < count; n++) {
817
818
value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
819
extract(data, offset + n * size, size);
820
821
if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
822
&& value[n] >= min && value[n] <= max
823
&& field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
824
goto exit;
825
}
826
827
for (n = 0; n < count; n++) {
828
829
if (HID_MAIN_ITEM_VARIABLE & field->flags) {
830
831
if (field->flags & HID_MAIN_ITEM_RELATIVE) {
832
if (!value[n])
833
continue;
834
} else {
835
if (value[n] == field->value[n])
836
continue;
837
}
838
hid_process_event(hid, field, &field->usage[n], value[n], regs);
839
continue;
840
}
841
842
if (field->value[n] >= min && field->value[n] <= max
843
&& field->usage[field->value[n] - min].hid
844
&& search(value, field->value[n], count))
845
hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, regs);
846
847
if (value[n] >= min && value[n] <= max
848
&& field->usage[value[n] - min].hid
849
&& search(field->value, value[n], count))
850
hid_process_event(hid, field, &field->usage[value[n] - min], 1, regs);
851
}
852
853
memcpy(field->value, value, count * sizeof(__s32));
854
exit:
855
kfree(value);
856
}
857
858
static int hid_input_report(int type, struct urb *urb, struct pt_regs *regs)
859
{
860
struct hid_device *hid = urb->context;
861
struct hid_report_enum *report_enum = hid->report_enum + type;
862
u8 *data = urb->transfer_buffer;
863
int len = urb->actual_length;
864
struct hid_report *report;
865
int n, size;
866
867
if (!len) {
868
dbg("empty report");
869
return -1;
870
}
871
872
#ifdef DEBUG_DATA
873
printk(KERN_DEBUG __FILE__ ": report (size %u) (%snumbered)\n", len, report_enum->numbered ? "" : "un");
874
#endif
875
876
n = 0; /* Normally report number is 0 */
877
if (report_enum->numbered) { /* Device uses numbered reports, data[0] is report number */
878
n = *data++;
879
len--;
880
}
881
882
#ifdef DEBUG_DATA
883
{
884
int i;
885
printk(KERN_DEBUG __FILE__ ": report %d (size %u) = ", n, len);
886
for (i = 0; i < len; i++)
887
printk(" %02x", data[i]);
888
printk("\n");
889
}
890
#endif
891
892
if (!(report = report_enum->report_id_hash[n])) {
893
dbg("undefined report_id %d received", n);
894
return -1;
895
}
896
897
size = ((report->size - 1) >> 3) + 1;
898
899
if (len < size) {
900
dbg("report %d is too short, (%d < %d)", report->id, len, size);
901
return -1;
902
}
903
904
if (hid->claimed & HID_CLAIMED_HIDDEV)
905
hiddev_report_event(hid, report);
906
907
for (n = 0; n < report->maxfield; n++)
908
hid_input_field(hid, report->field[n], data, regs);
909
910
if (hid->claimed & HID_CLAIMED_INPUT)
911
hidinput_report_event(hid, report);
912
913
return 0;
914
}
915
916
/*
917
* Input interrupt completion handler.
918
*/
919
920
static void hid_irq_in(struct urb *urb, struct pt_regs *regs)
921
{
922
struct hid_device *hid = urb->context;
923
int status;
924
925
switch (urb->status) {
926
case 0: /* success */
927
hid_input_report(HID_INPUT_REPORT, urb, regs);
928
break;
929
case -ECONNRESET: /* unlink */
930
case -ENOENT:
931
case -ESHUTDOWN:
932
return;
933
default: /* error */
934
dbg("nonzero status in input irq %d", urb->status);
935
}
936
937
status = usb_submit_urb (urb, SLAB_ATOMIC);
938
if (status)
939
err ("can't resubmit intr, %s-%s/input%d, status %d",
940
hid->dev->bus->bus_name, hid->dev->devpath,
941
hid->ifnum, status);
942
}
943
944
/*
945
* Output the field into the report.
946
*/
947
948
static void hid_output_field(struct hid_field *field, __u8 *data)
949
{
950
unsigned count = field->report_count;
951
unsigned offset = field->report_offset;
952
unsigned size = field->report_size;
953
unsigned n;
954
955
for (n = 0; n < count; n++) {
956
if (field->logical_minimum < 0) /* signed values */
957
implement(data, offset + n * size, size, s32ton(field->value[n], size));
958
else /* unsigned values */
959
implement(data, offset + n * size, size, field->value[n]);
960
}
961
}
962
963
/*
964
* Create a report.
965
*/
966
967
static void hid_output_report(struct hid_report *report, __u8 *data)
968
{
969
unsigned n;
970
971
if (report->id > 0)
972
*data++ = report->id;
973
974
for (n = 0; n < report->maxfield; n++)
975
hid_output_field(report->field[n], data);
976
}
977
978
/*
979
* Set a field value. The report this field belongs to has to be
980
* created and transferred to the device, to set this value in the
981
* device.
982
*/
983
984
int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
985
{
986
unsigned size = field->report_size;
987
988
hid_dump_input(field->usage + offset, value);
989
990
if (offset >= field->report_count) {
991
dbg("offset (%d) exceeds report_count (%d)", offset, field->report_count);
992
hid_dump_field(field, 8);
993
return -1;
994
}
995
if (field->logical_minimum < 0) {
996
if (value != snto32(s32ton(value, size), size)) {
997
dbg("value %d is out of range", value);
998
return -1;
999
}
1000
}
1001
field->value[offset] = value;
1002
return 0;
1003
}
1004
1005
int hid_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1006
{
1007
struct hid_report_enum *report_enum = hid->report_enum + HID_OUTPUT_REPORT;
1008
struct list_head *list = report_enum->report_list.next;
1009
int i, j;
1010
1011
while (list != &report_enum->report_list) {
1012
struct hid_report *report = (struct hid_report *) list;
1013
list = list->next;
1014
for (i = 0; i < report->maxfield; i++) {
1015
*field = report->field[i];
1016
for (j = 0; j < (*field)->maxusage; j++)
1017
if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1018
return j;
1019
}
1020
}
1021
return -1;
1022
}
1023
1024
/*
1025
* Find a report with a specified HID usage.
1026
*/
1027
1028
int hid_find_report_by_usage(struct hid_device *hid, __u32 wanted_usage, struct hid_report **report, int type)
1029
{
1030
struct hid_report_enum *report_enum = hid->report_enum + type;
1031
struct list_head *list = report_enum->report_list.next;
1032
int i, j;
1033
1034
while (list != &report_enum->report_list) {
1035
*report = (struct hid_report *) list;
1036
list = list->next;
1037
for (i = 0; i < (*report)->maxfield; i++) {
1038
struct hid_field *field = (*report)->field[i];
1039
for (j = 0; j < field->maxusage; j++)
1040
if (field->logical == wanted_usage)
1041
return j;
1042
}
1043
}
1044
return -1;
1045
}
1046
1047
#if 0
1048
static int hid_find_field_in_report(struct hid_report *report, __u32 wanted_usage, struct hid_field **field)
1049
{
1050
int i, j;
1051
1052
for (i = 0; i < report->maxfield; i++) {
1053
*field = report->field[i];
1054
for (j = 0; j < (*field)->maxusage; j++)
1055
if ((*field)->usage[j].hid == wanted_usage)
1056
return j;
1057
}
1058
1059
return -1;
1060
}
1061
#endif
1062
1063
static int hid_submit_out(struct hid_device *hid)
1064
{
1065
struct hid_report *report;
1066
1067
report = hid->out[hid->outtail];
1068
1069
hid_output_report(report, hid->outbuf);
1070
hid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1071
hid->urbout->dev = hid->dev;
1072
1073
dbg("submitting out urb");
1074
1075
if (usb_submit_urb(hid->urbout, GFP_ATOMIC)) {
1076
err("usb_submit_urb(out) failed");
1077
return -1;
1078
}
1079
1080
return 0;
1081
}
1082
1083
static int hid_submit_ctrl(struct hid_device *hid)
1084
{
1085
struct hid_report *report;
1086
unsigned char dir;
1087
int len;
1088
1089
report = hid->ctrl[hid->ctrltail].report;
1090
dir = hid->ctrl[hid->ctrltail].dir;
1091
1092
len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1093
if (dir == USB_DIR_OUT) {
1094
hid_output_report(report, hid->ctrlbuf);
1095
hid->urbctrl->pipe = usb_sndctrlpipe(hid->dev, 0);
1096
hid->urbctrl->transfer_buffer_length = len;
1097
} else {
1098
int maxpacket, padlen;
1099
1100
hid->urbctrl->pipe = usb_rcvctrlpipe(hid->dev, 0);
1101
maxpacket = usb_maxpacket(hid->dev, hid->urbctrl->pipe, 0);
1102
if (maxpacket > 0) {
1103
padlen = (len + maxpacket - 1) / maxpacket;
1104
padlen *= maxpacket;
1105
if (padlen > HID_BUFFER_SIZE)
1106
padlen = HID_BUFFER_SIZE;
1107
} else
1108
padlen = 0;
1109
hid->urbctrl->transfer_buffer_length = padlen;
1110
}
1111
hid->urbctrl->dev = hid->dev;
1112
1113
hid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
1114
hid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
1115
hid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
1116
hid->cr->wIndex = cpu_to_le16(hid->ifnum);
1117
hid->cr->wLength = cpu_to_le16(len);
1118
1119
dbg("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u",
1120
hid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
1121
hid->cr->wValue, hid->cr->wIndex, hid->cr->wLength);
1122
1123
if (usb_submit_urb(hid->urbctrl, GFP_ATOMIC)) {
1124
err("usb_submit_urb(ctrl) failed");
1125
return -1;
1126
}
1127
1128
return 0;
1129
}
1130
1131
/*
1132
* Output interrupt completion handler.
1133
*/
1134
1135
static void hid_irq_out(struct urb *urb, struct pt_regs *regs)
1136
{
1137
struct hid_device *hid = urb->context;
1138
unsigned long flags;
1139
1140
if (urb->status)
1141
warn("output irq status %d received", urb->status);
1142
1143
spin_lock_irqsave(&hid->outlock, flags);
1144
1145
hid->outtail = (hid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
1146
1147
if (hid->outhead != hid->outtail) {
1148
hid_submit_out(hid);
1149
spin_unlock_irqrestore(&hid->outlock, flags);
1150
return;
1151
}
1152
1153
clear_bit(HID_OUT_RUNNING, &hid->iofl);
1154
1155
spin_unlock_irqrestore(&hid->outlock, flags);
1156
1157
wake_up(&hid->wait);
1158
}
1159
1160
/*
1161
* Control pipe completion handler.
1162
*/
1163
1164
static void hid_ctrl(struct urb *urb, struct pt_regs *regs)
1165
{
1166
struct hid_device *hid = urb->context;
1167
unsigned long flags;
1168
1169
if (urb->status)
1170
warn("ctrl urb status %d received", urb->status);
1171
1172
spin_lock_irqsave(&hid->ctrllock, flags);
1173
1174
if (hid->ctrl[hid->ctrltail].dir == USB_DIR_IN)
1175
hid_input_report(hid->ctrl[hid->ctrltail].report->type, urb, regs);
1176
1177
hid->ctrltail = (hid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
1178
1179
if (hid->ctrlhead != hid->ctrltail) {
1180
hid_submit_ctrl(hid);
1181
spin_unlock_irqrestore(&hid->ctrllock, flags);
1182
return;
1183
}
1184
1185
clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1186
1187
spin_unlock_irqrestore(&hid->ctrllock, flags);
1188
1189
wake_up(&hid->wait);
1190
}
1191
1192
void hid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
1193
{
1194
int head;
1195
unsigned long flags;
1196
1197
if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
1198
return;
1199
1200
if (hid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
1201
1202
spin_lock_irqsave(&hid->outlock, flags);
1203
1204
if ((head = (hid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == hid->outtail) {
1205
spin_unlock_irqrestore(&hid->outlock, flags);
1206
warn("output queue full");
1207
return;
1208
}
1209
1210
hid->out[hid->outhead] = report;
1211
hid->outhead = head;
1212
1213
if (!test_and_set_bit(HID_OUT_RUNNING, &hid->iofl))
1214
hid_submit_out(hid);
1215
1216
spin_unlock_irqrestore(&hid->outlock, flags);
1217
return;
1218
}
1219
1220
spin_lock_irqsave(&hid->ctrllock, flags);
1221
1222
if ((head = (hid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == hid->ctrltail) {
1223
spin_unlock_irqrestore(&hid->ctrllock, flags);
1224
warn("control queue full");
1225
return;
1226
}
1227
1228
hid->ctrl[hid->ctrlhead].report = report;
1229
hid->ctrl[hid->ctrlhead].dir = dir;
1230
hid->ctrlhead = head;
1231
1232
if (!test_and_set_bit(HID_CTRL_RUNNING, &hid->iofl))
1233
hid_submit_ctrl(hid);
1234
1235
spin_unlock_irqrestore(&hid->ctrllock, flags);
1236
}
1237
1238
int hid_wait_io(struct hid_device *hid)
1239
{
1240
DECLARE_WAITQUEUE(wait, current);
1241
int timeout = 10*HZ;
1242
1243
set_current_state(TASK_UNINTERRUPTIBLE);
1244
add_wait_queue(&hid->wait, &wait);
1245
1246
while (timeout && (test_bit(HID_CTRL_RUNNING, &hid->iofl) ||
1247
test_bit(HID_OUT_RUNNING, &hid->iofl)))
1248
timeout = schedule_timeout(timeout);
1249
1250
set_current_state(TASK_RUNNING);
1251
remove_wait_queue(&hid->wait, &wait);
1252
1253
if (!timeout) {
1254
dbg("timeout waiting for ctrl or out queue to clear");
1255
return -1;
1256
}
1257
1258
return 0;
1259
}
1260
1261
static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
1262
unsigned char type, void *buf, int size)
1263
{
1264
return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
1265
USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
1266
(type << 8), ifnum, buf, size, HZ * USB_CTRL_GET_TIMEOUT);
1267
}
1268
1269
int hid_open(struct hid_device *hid)
1270
{
1271
if (hid->open++)
1272
return 0;
1273
1274
hid->urbin->dev = hid->dev;
1275
1276
if (usb_submit_urb(hid->urbin, GFP_KERNEL))
1277
return -EIO;
1278
1279
return 0;
1280
}
1281
1282
void hid_close(struct hid_device *hid)
1283
{
1284
if (!--hid->open)
1285
usb_unlink_urb(hid->urbin);
1286
}
1287
1288
/*
1289
* Initialize all reports
1290
*/
1291
1292
void hid_init_reports(struct hid_device *hid)
1293
{
1294
struct hid_report_enum *report_enum;
1295
struct hid_report *report;
1296
struct list_head *list;
1297
int err, ret;
1298
1299
/*
1300
* The Set_Idle request is supposed to affect only the
1301
* "Interrupt In" pipe. Unfortunately, buggy devices such as
1302
* the BTC keyboard (ID 046e:5303) the request also affects
1303
* Get_Report requests on the control pipe. In the worst
1304
* case, if the device was put on idle for an indefinite
1305
* amount of time (as we do below) and there are no input
1306
* events to report, the Get_Report requests will just hang
1307
* until we get a USB timeout. To avoid this, we temporarily
1308
* establish a minimal idle time of 1ms. This shouldn't hurt
1309
* bugfree devices and will cause a worst-case extra delay of
1310
* 1ms for buggy ones.
1311
*/
1312
usb_control_msg(hid->dev, usb_sndctrlpipe(hid->dev, 0),
1313
HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (1 << 8),
1314
hid->ifnum, NULL, 0, HZ * USB_CTRL_SET_TIMEOUT);
1315
1316
report_enum = hid->report_enum + HID_INPUT_REPORT;
1317
list = report_enum->report_list.next;
1318
while (list != &report_enum->report_list) {
1319
report = (struct hid_report *) list;
1320
hid_submit_report(hid, report, USB_DIR_IN);
1321
list = list->next;
1322
}
1323
1324
report_enum = hid->report_enum + HID_FEATURE_REPORT;
1325
list = report_enum->report_list.next;
1326
while (list != &report_enum->report_list) {
1327
report = (struct hid_report *) list;
1328
hid_submit_report(hid, report, USB_DIR_IN);
1329
list = list->next;
1330
}
1331
1332
err = 0;
1333
ret = hid_wait_io(hid);
1334
while (ret) {
1335
err |= ret;
1336
if (test_bit(HID_CTRL_RUNNING, &hid->iofl))
1337
usb_unlink_urb(hid->urbctrl);
1338
if (test_bit(HID_OUT_RUNNING, &hid->iofl))
1339
usb_unlink_urb(hid->urbout);
1340
ret = hid_wait_io(hid);
1341
}
1342
1343
if (err)
1344
warn("timeout initializing reports\n");
1345
1346
report_enum = hid->report_enum + HID_INPUT_REPORT;
1347
list = report_enum->report_list.next;
1348
while (list != &report_enum->report_list) {
1349
report = (struct hid_report *) list;
1350
usb_control_msg(hid->dev, usb_sndctrlpipe(hid->dev, 0),
1351
HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, report->id,
1352
hid->ifnum, NULL, 0, HZ * USB_CTRL_SET_TIMEOUT);
1353
list = list->next;
1354
}
1355
}
1356
1357
#define USB_VENDOR_ID_WACOM 0x056a
1358
#define USB_DEVICE_ID_WACOM_PENPARTNER 0x0000
1359
#define USB_DEVICE_ID_WACOM_GRAPHIRE 0x0010
1360
#define USB_DEVICE_ID_WACOM_INTUOS 0x0020
1361
#define USB_DEVICE_ID_WACOM_PL 0x0030
1362
#define USB_DEVICE_ID_WACOM_INTUOS2 0x0040
1363
#define USB_DEVICE_ID_WACOM_VOLITO 0x0060
1364
#define USB_DEVICE_ID_WACOM_PTU 0x0003
1365
#define USB_DEVICE_ID_WACOM_INTUOS3 0x00B0
1366
1367
#define USB_VENDOR_ID_KBGEAR 0x084e
1368
#define USB_DEVICE_ID_KBGEAR_JAMSTUDIO 0x1001
1369
1370
#define USB_VENDOR_ID_AIPTEK 0x08ca
1371
#define USB_DEVICE_ID_AIPTEK_01 0x0001
1372
#define USB_DEVICE_ID_AIPTEK_10 0x0010
1373
#define USB_DEVICE_ID_AIPTEK_20 0x0020
1374
#define USB_DEVICE_ID_AIPTEK_21 0x0021
1375
#define USB_DEVICE_ID_AIPTEK_22 0x0022
1376
#define USB_DEVICE_ID_AIPTEK_23 0x0023
1377
#define USB_DEVICE_ID_AIPTEK_24 0x0024
1378
1379
#define USB_VENDOR_ID_GRIFFIN 0x077d
1380
#define USB_DEVICE_ID_POWERMATE 0x0410
1381
#define USB_DEVICE_ID_SOUNDKNOB 0x04AA
1382
1383
#define USB_VENDOR_ID_ATEN 0x0557
1384
#define USB_DEVICE_ID_ATEN_UC100KM 0x2004
1385
#define USB_DEVICE_ID_ATEN_CS124U 0x2202
1386
#define USB_DEVICE_ID_ATEN_2PORTKVM 0x2204
1387
#define USB_DEVICE_ID_ATEN_4PORTKVM 0x2205
1388
#define USB_DEVICE_ID_ATEN_4PORTKVMC 0x2208
1389
1390
#define USB_VENDOR_ID_TOPMAX 0x0663
1391
#define USB_DEVICE_ID_TOPMAX_COBRAPAD 0x0103
1392
1393
#define USB_VENDOR_ID_HAPP 0x078b
1394
#define USB_DEVICE_ID_UGCI_DRIVING 0x0010
1395
#define USB_DEVICE_ID_UGCI_FLYING 0x0020
1396
#define USB_DEVICE_ID_UGCI_FIGHTING 0x0030
1397
1398
#define USB_VENDOR_ID_MGE 0x0463
1399
#define USB_DEVICE_ID_MGE_UPS 0xffff
1400
#define USB_DEVICE_ID_MGE_UPS1 0x0001
1401
1402
#define USB_VENDOR_ID_ONTRAK 0x0a07
1403
#define USB_DEVICE_ID_ONTRAK_ADU100 0x0064
1404
1405
#define USB_VENDOR_ID_TANGTOP 0x0d3d
1406
#define USB_DEVICE_ID_TANGTOP_USBPS2 0x0001
1407
1408
#define USB_VENDOR_ID_ESSENTIAL_REALITY 0x0d7f
1409
#define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100
1410
1411
#define USB_VENDOR_ID_A4TECH 0x09DA
1412
#define USB_DEVICE_ID_A4TECH_WCP32PU 0x0006
1413
1414
#define USB_VENDOR_ID_CYPRESS 0x04b4
1415
#define USB_DEVICE_ID_CYPRESS_MOUSE 0x0001
1416
1417
#define USB_VENDOR_ID_BERKSHIRE 0x0c98
1418
#define USB_DEVICE_ID_BERKSHIRE_PCWD 0x1140
1419
1420
#define USB_VENDOR_ID_ALPS 0x0433
1421
#define USB_DEVICE_ID_IBM_GAMEPAD 0x1101
1422
1423
#define USB_VENDOR_ID_SAITEK 0x06a3
1424
#define USB_DEVICE_ID_SAITEK_RUMBLEPAD 0xff17
1425
1426
#define USB_VENDOR_ID_NEC 0x073e
1427
#define USB_DEVICE_ID_NEC_USB_GAME_PAD 0x0301
1428
1429
#define USB_VENDOR_ID_CHIC 0x05fe
1430
#define USB_DEVICE_ID_CHIC_GAMEPAD 0x0014
1431
1432
#define USB_VENDOR_ID_GLAB 0x06c2
1433
#define USB_DEVICE_ID_4_PHIDGETSERVO_30 0x0038
1434
#define USB_DEVICE_ID_1_PHIDGETSERVO_30 0x0039
1435
#define USB_DEVICE_ID_8_8_8_IF_KIT 0x0045
1436
#define USB_DEVICE_ID_0_0_4_IF_KIT 0x0040
1437
#define USB_DEVICE_ID_0_8_8_IF_KIT 0x0053
1438
1439
#define USB_VENDOR_ID_WISEGROUP 0x0925
1440
#define USB_DEVICE_ID_1_PHIDGETSERVO_20 0x8101
1441
#define USB_DEVICE_ID_4_PHIDGETSERVO_20 0x8104
1442
1443
static struct hid_blacklist {
1444
__u16 idVendor;
1445
__u16 idProduct;
1446
unsigned quirks;
1447
} hid_blacklist[] = {
1448
1449
{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01, HID_QUIRK_IGNORE },
1450
{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10, HID_QUIRK_IGNORE },
1451
{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20, HID_QUIRK_IGNORE },
1452
{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21, HID_QUIRK_IGNORE },
1453
{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22, HID_QUIRK_IGNORE },
1454
{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23, HID_QUIRK_IGNORE },
1455
{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24, HID_QUIRK_IGNORE },
1456
{ USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD, HID_QUIRK_IGNORE },
1457
{ USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5, HID_QUIRK_IGNORE },
1458
{ USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO, HID_QUIRK_IGNORE },
1459
{ USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE, HID_QUIRK_IGNORE },
1460
{ USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB, HID_QUIRK_IGNORE },
1461
{ USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_IGNORE },
1462
{ USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1, HID_QUIRK_IGNORE },
1463
1464
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100, HID_QUIRK_IGNORE },
1465
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100, HID_QUIRK_IGNORE },
1466
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200, HID_QUIRK_IGNORE },
1467
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300, HID_QUIRK_IGNORE },
1468
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400, HID_QUIRK_IGNORE },
1469
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500, HID_QUIRK_IGNORE },
1470
1471
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PENPARTNER, HID_QUIRK_IGNORE },
1472
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE, HID_QUIRK_IGNORE },
1473
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 1, HID_QUIRK_IGNORE },
1474
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 2, HID_QUIRK_IGNORE },
1475
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 3, HID_QUIRK_IGNORE },
1476
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 4, HID_QUIRK_IGNORE },
1477
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS, HID_QUIRK_IGNORE },
1478
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 1, HID_QUIRK_IGNORE },
1479
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 2, HID_QUIRK_IGNORE },
1480
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 3, HID_QUIRK_IGNORE },
1481
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 4, HID_QUIRK_IGNORE },
1482
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL, HID_QUIRK_IGNORE },
1483
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 1, HID_QUIRK_IGNORE },
1484
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 2, HID_QUIRK_IGNORE },
1485
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 3, HID_QUIRK_IGNORE },
1486
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 4, HID_QUIRK_IGNORE },
1487
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 5, HID_QUIRK_IGNORE },
1488
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 1, HID_QUIRK_IGNORE },
1489
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 2, HID_QUIRK_IGNORE },
1490
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 3, HID_QUIRK_IGNORE },
1491
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 4, HID_QUIRK_IGNORE },
1492
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 5, HID_QUIRK_IGNORE },
1493
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 7, HID_QUIRK_IGNORE },
1494
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO, HID_QUIRK_IGNORE },
1495
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PTU, HID_QUIRK_IGNORE },
1496
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3, HID_QUIRK_IGNORE },
1497
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3 + 1, HID_QUIRK_IGNORE },
1498
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3 + 2, HID_QUIRK_IGNORE },
1499
1500
{ USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1501
{ USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1502
{ USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT, HID_QUIRK_IGNORE },
1503
{ USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT, HID_QUIRK_IGNORE },
1504
{ USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT, HID_QUIRK_IGNORE },
1505
1506
{ USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1507
{ USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1508
1509
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
1510
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
1511
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
1512
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
1513
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
1514
{ USB_VENDOR_ID_TANGTOP, USB_DEVICE_ID_TANGTOP_USBPS2, HID_QUIRK_NOGET },
1515
1516
{ USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU, HID_QUIRK_2WHEEL_MOUSE_HACK_BACK },
1517
{ USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE, HID_QUIRK_2WHEEL_MOUSE_HACK_EXTRA },
1518
1519
{ USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
1520
{ USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD },
1521
{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1522
{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1523
{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1524
{ USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD },
1525
{ USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
1526
{ USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
1527
1528
{ 0, 0 }
1529
};
1530
1531
static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
1532
{
1533
if (!(hid->inbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->inbuf_dma)))
1534
return -1;
1535
if (!(hid->outbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->outbuf_dma)))
1536
return -1;
1537
if (!(hid->cr = usb_buffer_alloc(dev, sizeof(*(hid->cr)), SLAB_ATOMIC, &hid->cr_dma)))
1538
return -1;
1539
if (!(hid->ctrlbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->ctrlbuf_dma)))
1540
return -1;
1541
1542
return 0;
1543
}
1544
1545
static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
1546
{
1547
if (hid->inbuf)
1548
usb_buffer_free(dev, HID_BUFFER_SIZE, hid->inbuf, hid->inbuf_dma);
1549
if (hid->outbuf)
1550
usb_buffer_free(dev, HID_BUFFER_SIZE, hid->outbuf, hid->outbuf_dma);
1551
if (hid->cr)
1552
usb_buffer_free(dev, sizeof(*(hid->cr)), hid->cr, hid->cr_dma);
1553
if (hid->ctrlbuf)
1554
usb_buffer_free(dev, HID_BUFFER_SIZE, hid->ctrlbuf, hid->ctrlbuf_dma);
1555
}
1556
1557
static struct hid_device *usb_hid_configure(struct usb_interface *intf)
1558
{
1559
struct usb_host_interface *interface = intf->cur_altsetting;
1560
struct usb_device *dev = interface_to_usbdev (intf);
1561
struct hid_descriptor *hdesc;
1562
struct hid_device *hid;
1563
unsigned quirks = 0, rsize = 0;
1564
char *buf, *rdesc;
1565
int n;
1566
1567
for (n = 0; hid_blacklist[n].idVendor; n++)
1568
if ((hid_blacklist[n].idVendor == dev->descriptor.idVendor) &&
1569
(hid_blacklist[n].idProduct == dev->descriptor.idProduct))
1570
quirks = hid_blacklist[n].quirks;
1571
1572
if (quirks & HID_QUIRK_IGNORE)
1573
return NULL;
1574
1575
if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && ((!interface->desc.bNumEndpoints) ||
1576
usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
1577
dbg("class descriptor not present\n");
1578
return NULL;
1579
}
1580
1581
for (n = 0; n < hdesc->bNumDescriptors; n++)
1582
if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
1583
rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
1584
1585
if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
1586
dbg("weird size of report descriptor (%u)", rsize);
1587
return NULL;
1588
}
1589
1590
if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
1591
dbg("couldn't allocate rdesc memory");
1592
return NULL;
1593
}
1594
1595
if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
1596
dbg("reading report descriptor failed");
1597
kfree(rdesc);
1598
return NULL;
1599
}
1600
1601
#ifdef DEBUG_DATA
1602
printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
1603
for (n = 0; n < rsize; n++)
1604
printk(" %02x", (unsigned char) rdesc[n]);
1605
printk("\n");
1606
#endif
1607
1608
if (!(hid = hid_parse_report(rdesc, rsize))) {
1609
dbg("parsing report descriptor failed");
1610
kfree(rdesc);
1611
return NULL;
1612
}
1613
1614
kfree(rdesc);
1615
hid->quirks = quirks;
1616
1617
if (hid_alloc_buffers(dev, hid)) {
1618
hid_free_buffers(dev, hid);
1619
goto fail;
1620
}
1621
1622
for (n = 0; n < interface->desc.bNumEndpoints; n++) {
1623
1624
struct usb_endpoint_descriptor *endpoint;
1625
int pipe;
1626
1627
endpoint = &interface->endpoint[n].desc;
1628
if ((endpoint->bmAttributes & 3) != 3) /* Not an interrupt endpoint */
1629
continue;
1630
1631
if (endpoint->bEndpointAddress & USB_DIR_IN) {
1632
int len;
1633
1634
if (hid->urbin)
1635
continue;
1636
if (!(hid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
1637
goto fail;
1638
pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
1639
len = usb_maxpacket(dev, pipe, 0);
1640
if (len > HID_BUFFER_SIZE)
1641
len = HID_BUFFER_SIZE;
1642
usb_fill_int_urb(hid->urbin, dev, pipe, hid->inbuf, len,
1643
hid_irq_in, hid, endpoint->bInterval);
1644
hid->urbin->transfer_dma = hid->inbuf_dma;
1645
hid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1646
} else {
1647
if (hid->urbout)
1648
continue;
1649
if (!(hid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
1650
goto fail;
1651
pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
1652
usb_fill_int_urb(hid->urbout, dev, pipe, hid->outbuf, 0,
1653
hid_irq_out, hid, 1);
1654
hid->urbout->transfer_dma = hid->outbuf_dma;
1655
hid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1656
}
1657
}
1658
1659
if (!hid->urbin) {
1660
err("couldn't find an input interrupt endpoint");
1661
goto fail;
1662
}
1663
1664
init_waitqueue_head(&hid->wait);
1665
1666
hid->outlock = SPIN_LOCK_UNLOCKED;
1667
hid->ctrllock = SPIN_LOCK_UNLOCKED;
1668
1669
hid->version = le16_to_cpu(hdesc->bcdHID);
1670
hid->country = hdesc->bCountryCode;
1671
hid->dev = dev;
1672
hid->intf = intf;
1673
hid->ifnum = interface->desc.bInterfaceNumber;
1674
1675
hid->name[0] = 0;
1676
1677
if (!(buf = kmalloc(64, GFP_KERNEL)))
1678
goto fail;
1679
1680
if (usb_string(dev, dev->descriptor.iManufacturer, buf, 64) > 0) {
1681
strcat(hid->name, buf);
1682
if (usb_string(dev, dev->descriptor.iProduct, buf, 64) > 0)
1683
snprintf(hid->name, 64, "%s %s", hid->name, buf);
1684
} else if (usb_string(dev, dev->descriptor.iProduct, buf, 128) > 0) {
1685
snprintf(hid->name, 128, "%s", buf);
1686
} else
1687
snprintf(hid->name, 128, "%04x:%04x", dev->descriptor.idVendor, dev->descriptor.idProduct);
1688
1689
usb_make_path(dev, buf, 64);
1690
snprintf(hid->phys, 64, "%s/input%d", buf,
1691
intf->altsetting[0].desc.bInterfaceNumber);
1692
1693
if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
1694
hid->uniq[0] = 0;
1695
1696
kfree(buf);
1697
1698
hid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
1699
if (!hid->urbctrl)
1700
goto fail;
1701
usb_fill_control_urb(hid->urbctrl, dev, 0, (void *) hid->cr,
1702
hid->ctrlbuf, 1, hid_ctrl, hid);
1703
hid->urbctrl->setup_dma = hid->cr_dma;
1704
hid->urbctrl->transfer_dma = hid->ctrlbuf_dma;
1705
hid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP
1706
| URB_NO_SETUP_DMA_MAP);
1707
1708
return hid;
1709
1710
fail:
1711
1712
if (hid->urbin)
1713
usb_free_urb(hid->urbin);
1714
if (hid->urbout)
1715
usb_free_urb(hid->urbout);
1716
if (hid->urbctrl)
1717
usb_free_urb(hid->urbctrl);
1718
hid_free_buffers(dev, hid);
1719
hid_free_device(hid);
1720
1721
return NULL;
1722
}
1723
1724
static void hid_disconnect(struct usb_interface *intf)
1725
{
1726
struct hid_device *hid = usb_get_intfdata (intf);
1727
1728
if (!hid)
1729
return;
1730
1731
usb_set_intfdata(intf, NULL);
1732
usb_unlink_urb(hid->urbin);
1733
usb_unlink_urb(hid->urbout);
1734
usb_unlink_urb(hid->urbctrl);
1735
1736
if (hid->claimed & HID_CLAIMED_INPUT)
1737
hidinput_disconnect(hid);
1738
if (hid->claimed & HID_CLAIMED_HIDDEV)
1739
hiddev_disconnect(hid);
1740
1741
usb_free_urb(hid->urbin);
1742
usb_free_urb(hid->urbctrl);
1743
if (hid->urbout)
1744
usb_free_urb(hid->urbout);
1745
1746
hid_free_buffers(hid->dev, hid);
1747
hid_free_device(hid);
1748
}
1749
1750
static int hid_probe (struct usb_interface *intf, const struct usb_device_id *id)
1751
{
1752
struct hid_device *hid;
1753
char path[64];
1754
int i;
1755
char *c;
1756
1757
dbg("HID probe called for ifnum %d",
1758
intf->altsetting->desc.bInterfaceNumber);
1759
1760
if (!(hid = usb_hid_configure(intf)))
1761
return -EIO;
1762
1763
hid_init_reports(hid);
1764
hid_dump_device(hid);
1765
1766
if (!hidinput_connect(hid))
1767
hid->claimed |= HID_CLAIMED_INPUT;
1768
if (!hiddev_connect(hid))
1769
hid->claimed |= HID_CLAIMED_HIDDEV;
1770
1771
usb_set_intfdata(intf, hid);
1772
1773
if (!hid->claimed) {
1774
printk ("HID device not claimed by input or hiddev\n");
1775
hid_disconnect(intf);
1776
return -EIO;
1777
}
1778
1779
printk(KERN_INFO);
1780
1781
if (hid->claimed & HID_CLAIMED_INPUT)
1782
printk("input");
1783
if (hid->claimed == (HID_CLAIMED_INPUT | HID_CLAIMED_HIDDEV))
1784
printk(",");
1785
if (hid->claimed & HID_CLAIMED_HIDDEV)
1786
printk("hiddev%d", hid->minor);
1787
1788
c = "Device";
1789
for (i = 0; i < hid->maxcollection; i++) {
1790
if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
1791
(hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1792
(hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
1793
c = hid_types[hid->collection[i].usage & 0xffff];
1794
break;
1795
}
1796
}
1797
1798
usb_make_path(interface_to_usbdev(intf), path, 63);
1799
1800
printk(": USB HID v%x.%02x %s [%s] on %s\n",
1801
hid->version >> 8, hid->version & 0xff, c, hid->name, path);
1802
1803
return 0;
1804
}
1805
1806
static struct usb_device_id hid_usb_ids [] = {
1807
{ .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1808
.bInterfaceClass = USB_INTERFACE_CLASS_HID },
1809
{ } /* Terminating entry */
1810
};
1811
1812
MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1813
1814
static struct usb_driver hid_driver = {
1815
.owner = THIS_MODULE,
1816
.name = "usbhid",
1817
.probe = hid_probe,
1818
.disconnect = hid_disconnect,
1819
.id_table = hid_usb_ids,
1820
};
1821
1822
static int __init hid_init(void)
1823
{
1824
int retval;
1825
retval = hiddev_init();
1826
if (retval)
1827
goto hiddev_init_fail;
1828
retval = usb_register(&hid_driver);
1829
if (retval)
1830
goto usb_register_fail;
1831
info(DRIVER_VERSION ":" DRIVER_DESC);
1832
1833
return 0;
1834
usb_register_fail:
1835
hiddev_exit();
1836
hiddev_init_fail:
1837
return retval;
1838
}
1839
1840
static void __exit hid_exit(void)
1841
{
1842
hiddev_exit();
1843
usb_deregister(&hid_driver);
1844
}
1845
1846
module_init(hid_init);
1847
module_exit(hid_exit);
1848
1849
MODULE_AUTHOR(DRIVER_AUTHOR);
1850
MODULE_DESCRIPTION(DRIVER_DESC);
1851
MODULE_LICENSE(DRIVER_LICENSE);
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Version: 2.0.1