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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/usb/input/hid-core.c
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/usb/input/hid-core.c')
-rw-r--r--drivers/usb/input/hid-core.c1864
1 files changed, 1864 insertions, 0 deletions
diff --git a/drivers/usb/input/hid-core.c b/drivers/usb/input/hid-core.c
new file mode 100644
index 00000000000..7662cf4e262
--- /dev/null
+++ b/drivers/usb/input/hid-core.c
@@ -0,0 +1,1864 @@
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#include <linux/wait.h>
28
29#undef DEBUG
30#undef DEBUG_DATA
31
32#include <linux/usb.h>
33
34#include "hid.h"
35#include <linux/hiddev.h>
36
37/*
38 * Version Information
39 */
40
41#define DRIVER_VERSION "v2.01"
42#define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik"
43#define DRIVER_DESC "USB HID core driver"
44#define DRIVER_LICENSE "GPL"
45
46static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
47 "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
48/*
49 * Module parameters.
50 */
51
52static unsigned int hid_mousepoll_interval;
53module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
54MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
55
56/*
57 * Register a new report for a device.
58 */
59
60static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
61{
62 struct hid_report_enum *report_enum = device->report_enum + type;
63 struct hid_report *report;
64
65 if (report_enum->report_id_hash[id])
66 return report_enum->report_id_hash[id];
67
68 if (!(report = kmalloc(sizeof(struct hid_report), GFP_KERNEL)))
69 return NULL;
70 memset(report, 0, sizeof(struct hid_report));
71
72 if (id != 0)
73 report_enum->numbered = 1;
74
75 report->id = id;
76 report->type = type;
77 report->size = 0;
78 report->device = device;
79 report_enum->report_id_hash[id] = report;
80
81 list_add_tail(&report->list, &report_enum->report_list);
82
83 return report;
84}
85
86/*
87 * Register a new field for this report.
88 */
89
90static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
91{
92 struct hid_field *field;
93
94 if (report->maxfield == HID_MAX_FIELDS) {
95 dbg("too many fields in report");
96 return NULL;
97 }
98
99 if (!(field = kmalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
100 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
101
102 memset(field, 0, sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
103 + values * sizeof(unsigned));
104
105 field->index = report->maxfield++;
106 report->field[field->index] = field;
107 field->usage = (struct hid_usage *)(field + 1);
108 field->value = (unsigned *)(field->usage + usages);
109 field->report = report;
110
111 return field;
112}
113
114/*
115 * Open a collection. The type/usage is pushed on the stack.
116 */
117
118static int open_collection(struct hid_parser *parser, unsigned type)
119{
120 struct hid_collection *collection;
121 unsigned usage;
122
123 usage = parser->local.usage[0];
124
125 if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
126 dbg("collection stack overflow");
127 return -1;
128 }
129
130 if (parser->device->maxcollection == parser->device->collection_size) {
131 collection = kmalloc(sizeof(struct hid_collection) *
132 parser->device->collection_size * 2, GFP_KERNEL);
133 if (collection == NULL) {
134 dbg("failed to reallocate collection array");
135 return -1;
136 }
137 memcpy(collection, parser->device->collection,
138 sizeof(struct hid_collection) *
139 parser->device->collection_size);
140 memset(collection + parser->device->collection_size, 0,
141 sizeof(struct hid_collection) *
142 parser->device->collection_size);
143 kfree(parser->device->collection);
144 parser->device->collection = collection;
145 parser->device->collection_size *= 2;
146 }
147
148 parser->collection_stack[parser->collection_stack_ptr++] =
149 parser->device->maxcollection;
150
151 collection = parser->device->collection +
152 parser->device->maxcollection++;
153 collection->type = type;
154 collection->usage = usage;
155 collection->level = parser->collection_stack_ptr - 1;
156
157 if (type == HID_COLLECTION_APPLICATION)
158 parser->device->maxapplication++;
159
160 return 0;
161}
162
163/*
164 * Close a collection.
165 */
166
167static int close_collection(struct hid_parser *parser)
168{
169 if (!parser->collection_stack_ptr) {
170 dbg("collection stack underflow");
171 return -1;
172 }
173 parser->collection_stack_ptr--;
174 return 0;
175}
176
177/*
178 * Climb up the stack, search for the specified collection type
179 * and return the usage.
180 */
181
182static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
183{
184 int n;
185 for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
186 if (parser->device->collection[parser->collection_stack[n]].type == type)
187 return parser->device->collection[parser->collection_stack[n]].usage;
188 return 0; /* we know nothing about this usage type */
189}
190
191/*
192 * Add a usage to the temporary parser table.
193 */
194
195static int hid_add_usage(struct hid_parser *parser, unsigned usage)
196{
197 if (parser->local.usage_index >= HID_MAX_USAGES) {
198 dbg("usage index exceeded");
199 return -1;
200 }
201 parser->local.usage[parser->local.usage_index] = usage;
202 parser->local.collection_index[parser->local.usage_index] =
203 parser->collection_stack_ptr ?
204 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
205 parser->local.usage_index++;
206 return 0;
207}
208
209/*
210 * Register a new field for this report.
211 */
212
213static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
214{
215 struct hid_report *report;
216 struct hid_field *field;
217 int usages;
218 unsigned offset;
219 int i;
220
221 if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
222 dbg("hid_register_report failed");
223 return -1;
224 }
225
226 if (parser->global.logical_maximum < parser->global.logical_minimum) {
227 dbg("logical range invalid %d %d", parser->global.logical_minimum, parser->global.logical_maximum);
228 return -1;
229 }
230
231 offset = report->size;
232 report->size += parser->global.report_size * parser->global.report_count;
233
234 if (!parser->local.usage_index) /* Ignore padding fields */
235 return 0;
236
237 usages = max_t(int, parser->local.usage_index, parser->global.report_count);
238
239 if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
240 return 0;
241
242 field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
243 field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
244 field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
245
246 for (i = 0; i < usages; i++) {
247 int j = i;
248 /* Duplicate the last usage we parsed if we have excess values */
249 if (i >= parser->local.usage_index)
250 j = parser->local.usage_index - 1;
251 field->usage[i].hid = parser->local.usage[j];
252 field->usage[i].collection_index =
253 parser->local.collection_index[j];
254 }
255
256 field->maxusage = usages;
257 field->flags = flags;
258 field->report_offset = offset;
259 field->report_type = report_type;
260 field->report_size = parser->global.report_size;
261 field->report_count = parser->global.report_count;
262 field->logical_minimum = parser->global.logical_minimum;
263 field->logical_maximum = parser->global.logical_maximum;
264 field->physical_minimum = parser->global.physical_minimum;
265 field->physical_maximum = parser->global.physical_maximum;
266 field->unit_exponent = parser->global.unit_exponent;
267 field->unit = parser->global.unit;
268
269 return 0;
270}
271
272/*
273 * Read data value from item.
274 */
275
276static __inline__ __u32 item_udata(struct hid_item *item)
277{
278 switch (item->size) {
279 case 1: return item->data.u8;
280 case 2: return item->data.u16;
281 case 4: return item->data.u32;
282 }
283 return 0;
284}
285
286static __inline__ __s32 item_sdata(struct hid_item *item)
287{
288 switch (item->size) {
289 case 1: return item->data.s8;
290 case 2: return item->data.s16;
291 case 4: return item->data.s32;
292 }
293 return 0;
294}
295
296/*
297 * Process a global item.
298 */
299
300static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
301{
302 switch (item->tag) {
303
304 case HID_GLOBAL_ITEM_TAG_PUSH:
305
306 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
307 dbg("global enviroment stack overflow");
308 return -1;
309 }
310
311 memcpy(parser->global_stack + parser->global_stack_ptr++,
312 &parser->global, sizeof(struct hid_global));
313 return 0;
314
315 case HID_GLOBAL_ITEM_TAG_POP:
316
317 if (!parser->global_stack_ptr) {
318 dbg("global enviroment stack underflow");
319 return -1;
320 }
321
322 memcpy(&parser->global, parser->global_stack + --parser->global_stack_ptr,
323 sizeof(struct hid_global));
324 return 0;
325
326 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
327 parser->global.usage_page = item_udata(item);
328 return 0;
329
330 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
331 parser->global.logical_minimum = item_sdata(item);
332 return 0;
333
334 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
335 if (parser->global.logical_minimum < 0)
336 parser->global.logical_maximum = item_sdata(item);
337 else
338 parser->global.logical_maximum = item_udata(item);
339 return 0;
340
341 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
342 parser->global.physical_minimum = item_sdata(item);
343 return 0;
344
345 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
346 if (parser->global.physical_minimum < 0)
347 parser->global.physical_maximum = item_sdata(item);
348 else
349 parser->global.physical_maximum = item_udata(item);
350 return 0;
351
352 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
353 parser->global.unit_exponent = item_sdata(item);
354 return 0;
355
356 case HID_GLOBAL_ITEM_TAG_UNIT:
357 parser->global.unit = item_udata(item);
358 return 0;
359
360 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
361 if ((parser->global.report_size = item_udata(item)) > 32) {
362 dbg("invalid report_size %d", parser->global.report_size);
363 return -1;
364 }
365 return 0;
366
367 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
368 if ((parser->global.report_count = item_udata(item)) > HID_MAX_USAGES) {
369 dbg("invalid report_count %d", parser->global.report_count);
370 return -1;
371 }
372 return 0;
373
374 case HID_GLOBAL_ITEM_TAG_REPORT_ID:
375 if ((parser->global.report_id = item_udata(item)) == 0) {
376 dbg("report_id 0 is invalid");
377 return -1;
378 }
379 return 0;
380
381 default:
382 dbg("unknown global tag 0x%x", item->tag);
383 return -1;
384 }
385}
386
387/*
388 * Process a local item.
389 */
390
391static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
392{
393 __u32 data;
394 unsigned n;
395
396 if (item->size == 0) {
397 dbg("item data expected for local item");
398 return -1;
399 }
400
401 data = item_udata(item);
402
403 switch (item->tag) {
404
405 case HID_LOCAL_ITEM_TAG_DELIMITER:
406
407 if (data) {
408 /*
409 * We treat items before the first delimiter
410 * as global to all usage sets (branch 0).
411 * In the moment we process only these global
412 * items and the first delimiter set.
413 */
414 if (parser->local.delimiter_depth != 0) {
415 dbg("nested delimiters");
416 return -1;
417 }
418 parser->local.delimiter_depth++;
419 parser->local.delimiter_branch++;
420 } else {
421 if (parser->local.delimiter_depth < 1) {
422 dbg("bogus close delimiter");
423 return -1;
424 }
425 parser->local.delimiter_depth--;
426 }
427 return 1;
428
429 case HID_LOCAL_ITEM_TAG_USAGE:
430
431 if (parser->local.delimiter_branch > 1) {
432 dbg("alternative usage ignored");
433 return 0;
434 }
435
436 if (item->size <= 2)
437 data = (parser->global.usage_page << 16) + data;
438
439 return hid_add_usage(parser, data);
440
441 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
442
443 if (parser->local.delimiter_branch > 1) {
444 dbg("alternative usage ignored");
445 return 0;
446 }
447
448 if (item->size <= 2)
449 data = (parser->global.usage_page << 16) + data;
450
451 parser->local.usage_minimum = data;
452 return 0;
453
454 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
455
456 if (parser->local.delimiter_branch > 1) {
457 dbg("alternative usage ignored");
458 return 0;
459 }
460
461 if (item->size <= 2)
462 data = (parser->global.usage_page << 16) + data;
463
464 for (n = parser->local.usage_minimum; n <= data; n++)
465 if (hid_add_usage(parser, n)) {
466 dbg("hid_add_usage failed\n");
467 return -1;
468 }
469 return 0;
470
471 default:
472
473 dbg("unknown local item tag 0x%x", item->tag);
474 return 0;
475 }
476 return 0;
477}
478
479/*
480 * Process a main item.
481 */
482
483static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
484{
485 __u32 data;
486 int ret;
487
488 data = item_udata(item);
489
490 switch (item->tag) {
491 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
492 ret = open_collection(parser, data & 0xff);
493 break;
494 case HID_MAIN_ITEM_TAG_END_COLLECTION:
495 ret = close_collection(parser);
496 break;
497 case HID_MAIN_ITEM_TAG_INPUT:
498 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
499 break;
500 case HID_MAIN_ITEM_TAG_OUTPUT:
501 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
502 break;
503 case HID_MAIN_ITEM_TAG_FEATURE:
504 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
505 break;
506 default:
507 dbg("unknown main item tag 0x%x", item->tag);
508 ret = 0;
509 }
510
511 memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */
512
513 return ret;
514}
515
516/*
517 * Process a reserved item.
518 */
519
520static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
521{
522 dbg("reserved item type, tag 0x%x", item->tag);
523 return 0;
524}
525
526/*
527 * Free a report and all registered fields. The field->usage and
528 * field->value table's are allocated behind the field, so we need
529 * only to free(field) itself.
530 */
531
532static void hid_free_report(struct hid_report *report)
533{
534 unsigned n;
535
536 for (n = 0; n < report->maxfield; n++)
537 kfree(report->field[n]);
538 kfree(report);
539}
540
541/*
542 * Free a device structure, all reports, and all fields.
543 */
544
545static void hid_free_device(struct hid_device *device)
546{
547 unsigned i,j;
548
549 hid_ff_exit(device);
550
551 for (i = 0; i < HID_REPORT_TYPES; i++) {
552 struct hid_report_enum *report_enum = device->report_enum + i;
553
554 for (j = 0; j < 256; j++) {
555 struct hid_report *report = report_enum->report_id_hash[j];
556 if (report)
557 hid_free_report(report);
558 }
559 }
560
561 if (device->rdesc)
562 kfree(device->rdesc);
563 kfree(device);
564}
565
566/*
567 * Fetch a report description item from the data stream. We support long
568 * items, though they are not used yet.
569 */
570
571static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
572{
573 u8 b;
574
575 if ((end - start) <= 0)
576 return NULL;
577
578 b = *start++;
579
580 item->type = (b >> 2) & 3;
581 item->tag = (b >> 4) & 15;
582
583 if (item->tag == HID_ITEM_TAG_LONG) {
584
585 item->format = HID_ITEM_FORMAT_LONG;
586
587 if ((end - start) < 2)
588 return NULL;
589
590 item->size = *start++;
591 item->tag = *start++;
592
593 if ((end - start) < item->size)
594 return NULL;
595
596 item->data.longdata = start;
597 start += item->size;
598 return start;
599 }
600
601 item->format = HID_ITEM_FORMAT_SHORT;
602 item->size = b & 3;
603
604 switch (item->size) {
605
606 case 0:
607 return start;
608
609 case 1:
610 if ((end - start) < 1)
611 return NULL;
612 item->data.u8 = *start++;
613 return start;
614
615 case 2:
616 if ((end - start) < 2)
617 return NULL;
618 item->data.u16 = le16_to_cpu(get_unaligned((__le16*)start));
619 start = (__u8 *)((__le16 *)start + 1);
620 return start;
621
622 case 3:
623 item->size++;
624 if ((end - start) < 4)
625 return NULL;
626 item->data.u32 = le32_to_cpu(get_unaligned((__le32*)start));
627 start = (__u8 *)((__le32 *)start + 1);
628 return start;
629 }
630
631 return NULL;
632}
633
634/*
635 * Parse a report description into a hid_device structure. Reports are
636 * enumerated, fields are attached to these reports.
637 */
638
639static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
640{
641 struct hid_device *device;
642 struct hid_parser *parser;
643 struct hid_item item;
644 __u8 *end;
645 unsigned i;
646 static int (*dispatch_type[])(struct hid_parser *parser,
647 struct hid_item *item) = {
648 hid_parser_main,
649 hid_parser_global,
650 hid_parser_local,
651 hid_parser_reserved
652 };
653
654 if (!(device = kmalloc(sizeof(struct hid_device), GFP_KERNEL)))
655 return NULL;
656 memset(device, 0, sizeof(struct hid_device));
657
658 if (!(device->collection = kmalloc(sizeof(struct hid_collection) *
659 HID_DEFAULT_NUM_COLLECTIONS, GFP_KERNEL))) {
660 kfree(device);
661 return NULL;
662 }
663 memset(device->collection, 0, sizeof(struct hid_collection) *
664 HID_DEFAULT_NUM_COLLECTIONS);
665 device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
666
667 for (i = 0; i < HID_REPORT_TYPES; i++)
668 INIT_LIST_HEAD(&device->report_enum[i].report_list);
669
670 if (!(device->rdesc = (__u8 *)kmalloc(size, GFP_KERNEL))) {
671 kfree(device->collection);
672 kfree(device);
673 return NULL;
674 }
675 memcpy(device->rdesc, start, size);
676 device->rsize = size;
677
678 if (!(parser = kmalloc(sizeof(struct hid_parser), GFP_KERNEL))) {
679 kfree(device->rdesc);
680 kfree(device->collection);
681 kfree(device);
682 return NULL;
683 }
684 memset(parser, 0, sizeof(struct hid_parser));
685 parser->device = device;
686
687 end = start + size;
688 while ((start = fetch_item(start, end, &item)) != NULL) {
689
690 if (item.format != HID_ITEM_FORMAT_SHORT) {
691 dbg("unexpected long global item");
692 kfree(device->collection);
693 hid_free_device(device);
694 kfree(parser);
695 return NULL;
696 }
697
698 if (dispatch_type[item.type](parser, &item)) {
699 dbg("item %u %u %u %u parsing failed\n",
700 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
701 kfree(device->collection);
702 hid_free_device(device);
703 kfree(parser);
704 return NULL;
705 }
706
707 if (start == end) {
708 if (parser->collection_stack_ptr) {
709 dbg("unbalanced collection at end of report description");
710 kfree(device->collection);
711 hid_free_device(device);
712 kfree(parser);
713 return NULL;
714 }
715 if (parser->local.delimiter_depth) {
716 dbg("unbalanced delimiter at end of report description");
717 kfree(device->collection);
718 hid_free_device(device);
719 kfree(parser);
720 return NULL;
721 }
722 kfree(parser);
723 return device;
724 }
725 }
726
727 dbg("item fetching failed at offset %d\n", (int)(end - start));
728 kfree(device->collection);
729 hid_free_device(device);
730 kfree(parser);
731 return NULL;
732}
733
734/*
735 * Convert a signed n-bit integer to signed 32-bit integer. Common
736 * cases are done through the compiler, the screwed things has to be
737 * done by hand.
738 */
739
740static __inline__ __s32 snto32(__u32 value, unsigned n)
741{
742 switch (n) {
743 case 8: return ((__s8)value);
744 case 16: return ((__s16)value);
745 case 32: return ((__s32)value);
746 }
747 return value & (1 << (n - 1)) ? value | (-1 << n) : value;
748}
749
750/*
751 * Convert a signed 32-bit integer to a signed n-bit integer.
752 */
753
754static __inline__ __u32 s32ton(__s32 value, unsigned n)
755{
756 __s32 a = value >> (n - 1);
757 if (a && a != -1)
758 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
759 return value & ((1 << n) - 1);
760}
761
762/*
763 * Extract/implement a data field from/to a report.
764 */
765
766static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
767{
768 report += (offset >> 5) << 2; offset &= 31;
769 return (le64_to_cpu(get_unaligned((__le64*)report)) >> offset) & ((1 << n) - 1);
770}
771
772static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
773{
774 report += (offset >> 5) << 2; offset &= 31;
775 put_unaligned((get_unaligned((__le64*)report)
776 & cpu_to_le64(~((((__u64) 1 << n) - 1) << offset)))
777 | cpu_to_le64((__u64)value << offset), (__le64*)report);
778}
779
780/*
781 * Search an array for a value.
782 */
783
784static __inline__ int search(__s32 *array, __s32 value, unsigned n)
785{
786 while (n--) {
787 if (*array++ == value)
788 return 0;
789 }
790 return -1;
791}
792
793static void hid_process_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs)
794{
795 hid_dump_input(usage, value);
796 if (hid->claimed & HID_CLAIMED_INPUT)
797 hidinput_hid_event(hid, field, usage, value, regs);
798 if (hid->claimed & HID_CLAIMED_HIDDEV)
799 hiddev_hid_event(hid, field, usage, value, regs);
800}
801
802/*
803 * Analyse a received field, and fetch the data from it. The field
804 * content is stored for next report processing (we do differential
805 * reporting to the layer).
806 */
807
808static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, struct pt_regs *regs)
809{
810 unsigned n;
811 unsigned count = field->report_count;
812 unsigned offset = field->report_offset;
813 unsigned size = field->report_size;
814 __s32 min = field->logical_minimum;
815 __s32 max = field->logical_maximum;
816 __s32 *value;
817
818 if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC)))
819 return;
820
821 for (n = 0; n < count; n++) {
822
823 value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
824 extract(data, offset + n * size, size);
825
826 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
827 && value[n] >= min && value[n] <= max
828 && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
829 goto exit;
830 }
831
832 for (n = 0; n < count; n++) {
833
834 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
835 hid_process_event(hid, field, &field->usage[n], value[n], regs);
836 continue;
837 }
838
839 if (field->value[n] >= min && field->value[n] <= max
840 && field->usage[field->value[n] - min].hid
841 && search(value, field->value[n], count))
842 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, regs);
843
844 if (value[n] >= min && value[n] <= max
845 && field->usage[value[n] - min].hid
846 && search(field->value, value[n], count))
847 hid_process_event(hid, field, &field->usage[value[n] - min], 1, regs);
848 }
849
850 memcpy(field->value, value, count * sizeof(__s32));
851exit:
852 kfree(value);
853}
854
855static int hid_input_report(int type, struct urb *urb, struct pt_regs *regs)
856{
857 struct hid_device *hid = urb->context;
858 struct hid_report_enum *report_enum = hid->report_enum + type;
859 u8 *data = urb->transfer_buffer;
860 int len = urb->actual_length;
861 struct hid_report *report;
862 int n, size;
863
864 if (!len) {
865 dbg("empty report");
866 return -1;
867 }
868
869#ifdef DEBUG_DATA
870 printk(KERN_DEBUG __FILE__ ": report (size %u) (%snumbered)\n", len, report_enum->numbered ? "" : "un");
871#endif
872
873 n = 0; /* Normally report number is 0 */
874 if (report_enum->numbered) { /* Device uses numbered reports, data[0] is report number */
875 n = *data++;
876 len--;
877 }
878
879#ifdef DEBUG_DATA
880 {
881 int i;
882 printk(KERN_DEBUG __FILE__ ": report %d (size %u) = ", n, len);
883 for (i = 0; i < len; i++)
884 printk(" %02x", data[i]);
885 printk("\n");
886 }
887#endif
888
889 if (!(report = report_enum->report_id_hash[n])) {
890 dbg("undefined report_id %d received", n);
891 return -1;
892 }
893
894 size = ((report->size - 1) >> 3) + 1;
895
896 if (len < size)
897 dbg("report %d is too short, (%d < %d)", report->id, len, size);
898
899 if (hid->claimed & HID_CLAIMED_HIDDEV)
900 hiddev_report_event(hid, report);
901
902 for (n = 0; n < report->maxfield; n++)
903 hid_input_field(hid, report->field[n], data, regs);
904
905 if (hid->claimed & HID_CLAIMED_INPUT)
906 hidinput_report_event(hid, report);
907
908 return 0;
909}
910
911/*
912 * Input interrupt completion handler.
913 */
914
915static void hid_irq_in(struct urb *urb, struct pt_regs *regs)
916{
917 struct hid_device *hid = urb->context;
918 int status;
919
920 switch (urb->status) {
921 case 0: /* success */
922 hid_input_report(HID_INPUT_REPORT, urb, regs);
923 break;
924 case -ECONNRESET: /* unlink */
925 case -ENOENT:
926 case -EPERM:
927 case -ESHUTDOWN: /* unplug */
928 case -EILSEQ: /* unplug timeout on uhci */
929 return;
930 case -ETIMEDOUT: /* NAK */
931 break;
932 default: /* error */
933 warn("input irq status %d received", urb->status);
934 }
935
936 status = usb_submit_urb(urb, SLAB_ATOMIC);
937 if (status)
938 err("can't resubmit intr, %s-%s/input%d, status %d",
939 hid->dev->bus->bus_name, hid->dev->devpath,
940 hid->ifnum, status);
941}
942
943/*
944 * Output the field into the report.
945 */
946
947static void hid_output_field(struct hid_field *field, __u8 *data)
948{
949 unsigned count = field->report_count;
950 unsigned offset = field->report_offset;
951 unsigned size = field->report_size;
952 unsigned n;
953
954 for (n = 0; n < count; n++) {
955 if (field->logical_minimum < 0) /* signed values */
956 implement(data, offset + n * size, size, s32ton(field->value[n], size));
957 else /* unsigned values */
958 implement(data, offset + n * size, size, field->value[n]);
959 }
960}
961
962/*
963 * Create a report.
964 */
965
966static void hid_output_report(struct hid_report *report, __u8 *data)
967{
968 unsigned n;
969
970 if (report->id > 0)
971 *data++ = report->id;
972
973 for (n = 0; n < report->maxfield; n++)
974 hid_output_field(report->field[n], data);
975}
976
977/*
978 * Set a field value. The report this field belongs to has to be
979 * created and transferred to the device, to set this value in the
980 * device.
981 */
982
983int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
984{
985 unsigned size = field->report_size;
986
987 hid_dump_input(field->usage + offset, value);
988
989 if (offset >= field->report_count) {
990 dbg("offset (%d) exceeds report_count (%d)", offset, field->report_count);
991 hid_dump_field(field, 8);
992 return -1;
993 }
994 if (field->logical_minimum < 0) {
995 if (value != snto32(s32ton(value, size), size)) {
996 dbg("value %d is out of range", value);
997 return -1;
998 }
999 }
1000 field->value[offset] = value;
1001 return 0;
1002}
1003
1004/*
1005 * Find a report field with a specified HID usage.
1006 */
1007
1008struct hid_field *hid_find_field_by_usage(struct hid_device *hid, __u32 wanted_usage, int type)
1009{
1010 struct hid_report *report;
1011 int i;
1012
1013 list_for_each_entry(report, &hid->report_enum[type].report_list, list)
1014 for (i = 0; i < report->maxfield; i++)
1015 if (report->field[i]->logical == wanted_usage)
1016 return report->field[i];
1017 return NULL;
1018}
1019
1020static int hid_submit_out(struct hid_device *hid)
1021{
1022 struct hid_report *report;
1023
1024 report = hid->out[hid->outtail];
1025
1026 hid_output_report(report, hid->outbuf);
1027 hid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1028 hid->urbout->dev = hid->dev;
1029
1030 dbg("submitting out urb");
1031
1032 if (usb_submit_urb(hid->urbout, GFP_ATOMIC)) {
1033 err("usb_submit_urb(out) failed");
1034 return -1;
1035 }
1036
1037 return 0;
1038}
1039
1040static int hid_submit_ctrl(struct hid_device *hid)
1041{
1042 struct hid_report *report;
1043 unsigned char dir;
1044 int len;
1045
1046 report = hid->ctrl[hid->ctrltail].report;
1047 dir = hid->ctrl[hid->ctrltail].dir;
1048
1049 len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1050 if (dir == USB_DIR_OUT) {
1051 hid_output_report(report, hid->ctrlbuf);
1052 hid->urbctrl->pipe = usb_sndctrlpipe(hid->dev, 0);
1053 hid->urbctrl->transfer_buffer_length = len;
1054 } else {
1055 int maxpacket, padlen;
1056
1057 hid->urbctrl->pipe = usb_rcvctrlpipe(hid->dev, 0);
1058 maxpacket = usb_maxpacket(hid->dev, hid->urbctrl->pipe, 0);
1059 if (maxpacket > 0) {
1060 padlen = (len + maxpacket - 1) / maxpacket;
1061 padlen *= maxpacket;
1062 if (padlen > HID_BUFFER_SIZE)
1063 padlen = HID_BUFFER_SIZE;
1064 } else
1065 padlen = 0;
1066 hid->urbctrl->transfer_buffer_length = padlen;
1067 }
1068 hid->urbctrl->dev = hid->dev;
1069
1070 hid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
1071 hid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
1072 hid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
1073 hid->cr->wIndex = cpu_to_le16(hid->ifnum);
1074 hid->cr->wLength = cpu_to_le16(len);
1075
1076 dbg("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u",
1077 hid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
1078 hid->cr->wValue, hid->cr->wIndex, hid->cr->wLength);
1079
1080 if (usb_submit_urb(hid->urbctrl, GFP_ATOMIC)) {
1081 err("usb_submit_urb(ctrl) failed");
1082 return -1;
1083 }
1084
1085 return 0;
1086}
1087
1088/*
1089 * Output interrupt completion handler.
1090 */
1091
1092static void hid_irq_out(struct urb *urb, struct pt_regs *regs)
1093{
1094 struct hid_device *hid = urb->context;
1095 unsigned long flags;
1096 int unplug = 0;
1097
1098 switch (urb->status) {
1099 case 0: /* success */
1100 case -ESHUTDOWN: /* unplug */
1101 case -EILSEQ: /* unplug timeout on uhci */
1102 unplug = 1;
1103 case -ECONNRESET: /* unlink */
1104 case -ENOENT:
1105 break;
1106 default: /* error */
1107 warn("output irq status %d received", urb->status);
1108 }
1109
1110 spin_lock_irqsave(&hid->outlock, flags);
1111
1112 if (unplug)
1113 hid->outtail = hid->outhead;
1114 else
1115 hid->outtail = (hid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
1116
1117 if (hid->outhead != hid->outtail) {
1118 if (hid_submit_out(hid)) {
1119 clear_bit(HID_OUT_RUNNING, &hid->iofl);;
1120 wake_up(&hid->wait);
1121 }
1122 spin_unlock_irqrestore(&hid->outlock, flags);
1123 return;
1124 }
1125
1126 clear_bit(HID_OUT_RUNNING, &hid->iofl);
1127 spin_unlock_irqrestore(&hid->outlock, flags);
1128 wake_up(&hid->wait);
1129}
1130
1131/*
1132 * Control pipe completion handler.
1133 */
1134
1135static void hid_ctrl(struct urb *urb, struct pt_regs *regs)
1136{
1137 struct hid_device *hid = urb->context;
1138 unsigned long flags;
1139 int unplug = 0;
1140
1141 spin_lock_irqsave(&hid->ctrllock, flags);
1142
1143 switch (urb->status) {
1144 case 0: /* success */
1145 if (hid->ctrl[hid->ctrltail].dir == USB_DIR_IN)
1146 hid_input_report(hid->ctrl[hid->ctrltail].report->type, urb, regs);
1147 case -ESHUTDOWN: /* unplug */
1148 case -EILSEQ: /* unplug timectrl on uhci */
1149 unplug = 1;
1150 case -ECONNRESET: /* unlink */
1151 case -ENOENT:
1152 case -EPIPE: /* report not available */
1153 break;
1154 default: /* error */
1155 warn("ctrl urb status %d received", urb->status);
1156 }
1157
1158 if (unplug)
1159 hid->ctrltail = hid->ctrlhead;
1160 else
1161 hid->ctrltail = (hid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
1162
1163 if (hid->ctrlhead != hid->ctrltail) {
1164 if (hid_submit_ctrl(hid)) {
1165 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1166 wake_up(&hid->wait);
1167 }
1168 spin_unlock_irqrestore(&hid->ctrllock, flags);
1169 return;
1170 }
1171
1172 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1173 spin_unlock_irqrestore(&hid->ctrllock, flags);
1174 wake_up(&hid->wait);
1175}
1176
1177void hid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
1178{
1179 int head;
1180 unsigned long flags;
1181
1182 if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
1183 return;
1184
1185 if (hid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
1186
1187 spin_lock_irqsave(&hid->outlock, flags);
1188
1189 if ((head = (hid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == hid->outtail) {
1190 spin_unlock_irqrestore(&hid->outlock, flags);
1191 warn("output queue full");
1192 return;
1193 }
1194
1195 hid->out[hid->outhead] = report;
1196 hid->outhead = head;
1197
1198 if (!test_and_set_bit(HID_OUT_RUNNING, &hid->iofl))
1199 if (hid_submit_out(hid))
1200 clear_bit(HID_OUT_RUNNING, &hid->iofl);
1201
1202 spin_unlock_irqrestore(&hid->outlock, flags);
1203 return;
1204 }
1205
1206 spin_lock_irqsave(&hid->ctrllock, flags);
1207
1208 if ((head = (hid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == hid->ctrltail) {
1209 spin_unlock_irqrestore(&hid->ctrllock, flags);
1210 warn("control queue full");
1211 return;
1212 }
1213
1214 hid->ctrl[hid->ctrlhead].report = report;
1215 hid->ctrl[hid->ctrlhead].dir = dir;
1216 hid->ctrlhead = head;
1217
1218 if (!test_and_set_bit(HID_CTRL_RUNNING, &hid->iofl))
1219 if (hid_submit_ctrl(hid))
1220 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1221
1222 spin_unlock_irqrestore(&hid->ctrllock, flags);
1223}
1224
1225int hid_wait_io(struct hid_device *hid)
1226{
1227 if (!wait_event_timeout(hid->wait, (!test_bit(HID_CTRL_RUNNING, &hid->iofl) &&
1228 !test_bit(HID_OUT_RUNNING, &hid->iofl)),
1229 10*HZ)) {
1230 dbg("timeout waiting for ctrl or out queue to clear");
1231 return -1;
1232 }
1233
1234 return 0;
1235}
1236
1237static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
1238 unsigned char type, void *buf, int size)
1239{
1240 int result, retries = 4;
1241
1242 memset(buf,0,size); // Make sure we parse really received data
1243
1244 do {
1245 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
1246 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
1247 (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT);
1248 retries--;
1249 } while (result < size && retries);
1250 return result;
1251}
1252
1253int hid_open(struct hid_device *hid)
1254{
1255 if (hid->open++)
1256 return 0;
1257
1258 hid->urbin->dev = hid->dev;
1259
1260 if (usb_submit_urb(hid->urbin, GFP_KERNEL))
1261 return -EIO;
1262
1263 return 0;
1264}
1265
1266void hid_close(struct hid_device *hid)
1267{
1268 if (!--hid->open)
1269 usb_kill_urb(hid->urbin);
1270}
1271
1272/*
1273 * Initialize all reports
1274 */
1275
1276void hid_init_reports(struct hid_device *hid)
1277{
1278 struct hid_report *report;
1279 int err, ret;
1280
1281 list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list) {
1282 int size = ((report->size - 1) >> 3) + 1 + hid->report_enum[HID_INPUT_REPORT].numbered;
1283 if (size > HID_BUFFER_SIZE) size = HID_BUFFER_SIZE;
1284 if (size > hid->urbin->transfer_buffer_length)
1285 hid->urbin->transfer_buffer_length = size;
1286 hid_submit_report(hid, report, USB_DIR_IN);
1287 }
1288
1289 list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list)
1290 hid_submit_report(hid, report, USB_DIR_IN);
1291
1292 err = 0;
1293 ret = hid_wait_io(hid);
1294 while (ret) {
1295 err |= ret;
1296 if (test_bit(HID_CTRL_RUNNING, &hid->iofl))
1297 usb_kill_urb(hid->urbctrl);
1298 if (test_bit(HID_OUT_RUNNING, &hid->iofl))
1299 usb_kill_urb(hid->urbout);
1300 ret = hid_wait_io(hid);
1301 }
1302
1303 if (err)
1304 warn("timeout initializing reports\n");
1305
1306 usb_control_msg(hid->dev, usb_sndctrlpipe(hid->dev, 0),
1307 HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0,
1308 hid->ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT);
1309}
1310
1311#define USB_VENDOR_ID_WACOM 0x056a
1312#define USB_DEVICE_ID_WACOM_PENPARTNER 0x0000
1313#define USB_DEVICE_ID_WACOM_GRAPHIRE 0x0010
1314#define USB_DEVICE_ID_WACOM_INTUOS 0x0020
1315#define USB_DEVICE_ID_WACOM_PL 0x0030
1316#define USB_DEVICE_ID_WACOM_INTUOS2 0x0040
1317#define USB_DEVICE_ID_WACOM_VOLITO 0x0060
1318#define USB_DEVICE_ID_WACOM_PTU 0x0003
1319
1320#define USB_VENDOR_ID_KBGEAR 0x084e
1321#define USB_DEVICE_ID_KBGEAR_JAMSTUDIO 0x1001
1322
1323#define USB_VENDOR_ID_AIPTEK 0x08ca
1324#define USB_DEVICE_ID_AIPTEK_01 0x0001
1325#define USB_DEVICE_ID_AIPTEK_10 0x0010
1326#define USB_DEVICE_ID_AIPTEK_20 0x0020
1327#define USB_DEVICE_ID_AIPTEK_21 0x0021
1328#define USB_DEVICE_ID_AIPTEK_22 0x0022
1329#define USB_DEVICE_ID_AIPTEK_23 0x0023
1330#define USB_DEVICE_ID_AIPTEK_24 0x0024
1331
1332#define USB_VENDOR_ID_GRIFFIN 0x077d
1333#define USB_DEVICE_ID_POWERMATE 0x0410
1334#define USB_DEVICE_ID_SOUNDKNOB 0x04AA
1335
1336#define USB_VENDOR_ID_ATEN 0x0557
1337#define USB_DEVICE_ID_ATEN_UC100KM 0x2004
1338#define USB_DEVICE_ID_ATEN_CS124U 0x2202
1339#define USB_DEVICE_ID_ATEN_2PORTKVM 0x2204
1340#define USB_DEVICE_ID_ATEN_4PORTKVM 0x2205
1341#define USB_DEVICE_ID_ATEN_4PORTKVMC 0x2208
1342
1343#define USB_VENDOR_ID_TOPMAX 0x0663
1344#define USB_DEVICE_ID_TOPMAX_COBRAPAD 0x0103
1345
1346#define USB_VENDOR_ID_HAPP 0x078b
1347#define USB_DEVICE_ID_UGCI_DRIVING 0x0010
1348#define USB_DEVICE_ID_UGCI_FLYING 0x0020
1349#define USB_DEVICE_ID_UGCI_FIGHTING 0x0030
1350
1351#define USB_VENDOR_ID_MGE 0x0463
1352#define USB_DEVICE_ID_MGE_UPS 0xffff
1353#define USB_DEVICE_ID_MGE_UPS1 0x0001
1354
1355#define USB_VENDOR_ID_ONTRAK 0x0a07
1356#define USB_DEVICE_ID_ONTRAK_ADU100 0x0064
1357
1358#define USB_VENDOR_ID_TANGTOP 0x0d3d
1359#define USB_DEVICE_ID_TANGTOP_USBPS2 0x0001
1360
1361#define USB_VENDOR_ID_ESSENTIAL_REALITY 0x0d7f
1362#define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100
1363
1364#define USB_VENDOR_ID_A4TECH 0x09da
1365#define USB_DEVICE_ID_A4TECH_WCP32PU 0x0006
1366
1367#define USB_VENDOR_ID_CYPRESS 0x04b4
1368#define USB_DEVICE_ID_CYPRESS_MOUSE 0x0001
1369#define USB_DEVICE_ID_CYPRESS_HIDCOM 0x5500
1370
1371#define USB_VENDOR_ID_BERKSHIRE 0x0c98
1372#define USB_DEVICE_ID_BERKSHIRE_PCWD 0x1140
1373
1374#define USB_VENDOR_ID_ALPS 0x0433
1375#define USB_DEVICE_ID_IBM_GAMEPAD 0x1101
1376
1377#define USB_VENDOR_ID_SAITEK 0x06a3
1378#define USB_DEVICE_ID_SAITEK_RUMBLEPAD 0xff17
1379
1380#define USB_VENDOR_ID_NEC 0x073e
1381#define USB_DEVICE_ID_NEC_USB_GAME_PAD 0x0301
1382
1383#define USB_VENDOR_ID_CHIC 0x05fe
1384#define USB_DEVICE_ID_CHIC_GAMEPAD 0x0014
1385
1386#define USB_VENDOR_ID_GLAB 0x06c2
1387#define USB_DEVICE_ID_4_PHIDGETSERVO_30 0x0038
1388#define USB_DEVICE_ID_1_PHIDGETSERVO_30 0x0039
1389#define USB_DEVICE_ID_8_8_8_IF_KIT 0x0045
1390#define USB_DEVICE_ID_0_0_4_IF_KIT 0x0040
1391#define USB_DEVICE_ID_0_8_8_IF_KIT 0x0053
1392
1393#define USB_VENDOR_ID_WISEGROUP 0x0925
1394#define USB_DEVICE_ID_1_PHIDGETSERVO_20 0x8101
1395#define USB_DEVICE_ID_4_PHIDGETSERVO_20 0x8104
1396
1397#define USB_VENDOR_ID_CODEMERCS 0x07c0
1398#define USB_DEVICE_ID_CODEMERCS_IOW40 0x1500
1399#define USB_DEVICE_ID_CODEMERCS_IOW24 0x1501
1400#define USB_DEVICE_ID_CODEMERCS_IOW48 0x1502
1401#define USB_DEVICE_ID_CODEMERCS_IOW28 0x1503
1402
1403#define USB_VENDOR_ID_DELORME 0x1163
1404#define USB_DEVICE_ID_DELORME_EARTHMATE 0x0100
1405
1406#define USB_VENDOR_ID_MCC 0x09db
1407#define USB_DEVICE_ID_MCC_PMD1024LS 0x0076
1408#define USB_DEVICE_ID_MCC_PMD1208LS 0x007a
1409
1410#define USB_VENDOR_ID_CHICONY 0x04f2
1411#define USB_DEVICE_ID_CHICONY_USBHUB_KB 0x0100
1412
1413#define USB_VENDOR_ID_BTC 0x046e
1414#define USB_DEVICE_ID_BTC_KEYBOARD 0x5303
1415
1416
1417/*
1418 * Alphabetically sorted blacklist by quirk type.
1419 */
1420
1421static struct hid_blacklist {
1422 __u16 idVendor;
1423 __u16 idProduct;
1424 unsigned quirks;
1425} hid_blacklist[] = {
1426
1427 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01, HID_QUIRK_IGNORE },
1428 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10, HID_QUIRK_IGNORE },
1429 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20, HID_QUIRK_IGNORE },
1430 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21, HID_QUIRK_IGNORE },
1431 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22, HID_QUIRK_IGNORE },
1432 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23, HID_QUIRK_IGNORE },
1433 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24, HID_QUIRK_IGNORE },
1434 { USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD, HID_QUIRK_IGNORE },
1435 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW40, HID_QUIRK_IGNORE },
1436 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW24, HID_QUIRK_IGNORE },
1437 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW48, HID_QUIRK_IGNORE },
1438 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW28, HID_QUIRK_IGNORE },
1439 { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM, HID_QUIRK_IGNORE },
1440 { USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE, HID_QUIRK_IGNORE },
1441 { USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5, HID_QUIRK_IGNORE },
1442 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1443 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1444 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT, HID_QUIRK_IGNORE },
1445 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT, HID_QUIRK_IGNORE },
1446 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT, HID_QUIRK_IGNORE },
1447 { USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE, HID_QUIRK_IGNORE },
1448 { USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB, HID_QUIRK_IGNORE },
1449 { USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO, HID_QUIRK_IGNORE },
1450 { USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS, HID_QUIRK_IGNORE },
1451 { USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS, HID_QUIRK_IGNORE },
1452 { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_IGNORE },
1453 { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1, HID_QUIRK_IGNORE },
1454 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100, HID_QUIRK_IGNORE },
1455 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100, HID_QUIRK_IGNORE },
1456 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200, HID_QUIRK_IGNORE },
1457 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300, HID_QUIRK_IGNORE },
1458 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400, HID_QUIRK_IGNORE },
1459 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500, HID_QUIRK_IGNORE },
1460 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PENPARTNER, HID_QUIRK_IGNORE },
1461 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE, HID_QUIRK_IGNORE },
1462 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 1, HID_QUIRK_IGNORE },
1463 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 2, HID_QUIRK_IGNORE },
1464 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 3, HID_QUIRK_IGNORE },
1465 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 4, HID_QUIRK_IGNORE },
1466 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS, HID_QUIRK_IGNORE },
1467 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 1, HID_QUIRK_IGNORE },
1468 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 2, HID_QUIRK_IGNORE },
1469 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 3, HID_QUIRK_IGNORE },
1470 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 4, HID_QUIRK_IGNORE },
1471 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL, HID_QUIRK_IGNORE },
1472 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 1, HID_QUIRK_IGNORE },
1473 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 2, HID_QUIRK_IGNORE },
1474 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 3, HID_QUIRK_IGNORE },
1475 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 4, HID_QUIRK_IGNORE },
1476 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 5, HID_QUIRK_IGNORE },
1477 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 1, HID_QUIRK_IGNORE },
1478 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 2, HID_QUIRK_IGNORE },
1479 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 3, HID_QUIRK_IGNORE },
1480 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 4, HID_QUIRK_IGNORE },
1481 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 5, HID_QUIRK_IGNORE },
1482 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 7, HID_QUIRK_IGNORE },
1483 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO, HID_QUIRK_IGNORE },
1484 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PTU, HID_QUIRK_IGNORE },
1485 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1486 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1487
1488 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
1489 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
1490 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
1491 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
1492 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
1493 { USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_KEYBOARD, HID_QUIRK_NOGET},
1494 { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_USBHUB_KB, HID_QUIRK_NOGET},
1495 { USB_VENDOR_ID_TANGTOP, USB_DEVICE_ID_TANGTOP_USBPS2, HID_QUIRK_NOGET },
1496
1497 { USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU, HID_QUIRK_2WHEEL_MOUSE_HACK_7 },
1498 { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE, HID_QUIRK_2WHEEL_MOUSE_HACK_5 },
1499
1500 { USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
1501 { USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD },
1502 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1503 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1504 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1505 { USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD },
1506 { USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
1507 { USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
1508
1509 { 0, 0 }
1510};
1511
1512static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
1513{
1514 if (!(hid->inbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->inbuf_dma)))
1515 return -1;
1516 if (!(hid->outbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->outbuf_dma)))
1517 return -1;
1518 if (!(hid->cr = usb_buffer_alloc(dev, sizeof(*(hid->cr)), SLAB_ATOMIC, &hid->cr_dma)))
1519 return -1;
1520 if (!(hid->ctrlbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->ctrlbuf_dma)))
1521 return -1;
1522
1523 return 0;
1524}
1525
1526static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
1527{
1528 if (hid->inbuf)
1529 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->inbuf, hid->inbuf_dma);
1530 if (hid->outbuf)
1531 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->outbuf, hid->outbuf_dma);
1532 if (hid->cr)
1533 usb_buffer_free(dev, sizeof(*(hid->cr)), hid->cr, hid->cr_dma);
1534 if (hid->ctrlbuf)
1535 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->ctrlbuf, hid->ctrlbuf_dma);
1536}
1537
1538static struct hid_device *usb_hid_configure(struct usb_interface *intf)
1539{
1540 struct usb_host_interface *interface = intf->cur_altsetting;
1541 struct usb_device *dev = interface_to_usbdev (intf);
1542 struct hid_descriptor *hdesc;
1543 struct hid_device *hid;
1544 unsigned quirks = 0, rsize = 0;
1545 char *buf, *rdesc;
1546 int n;
1547
1548 for (n = 0; hid_blacklist[n].idVendor; n++)
1549 if ((hid_blacklist[n].idVendor == le16_to_cpu(dev->descriptor.idVendor)) &&
1550 (hid_blacklist[n].idProduct == le16_to_cpu(dev->descriptor.idProduct)))
1551 quirks = hid_blacklist[n].quirks;
1552
1553 if (quirks & HID_QUIRK_IGNORE)
1554 return NULL;
1555
1556 if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && ((!interface->desc.bNumEndpoints) ||
1557 usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
1558 dbg("class descriptor not present\n");
1559 return NULL;
1560 }
1561
1562 for (n = 0; n < hdesc->bNumDescriptors; n++)
1563 if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
1564 rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
1565
1566 if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
1567 dbg("weird size of report descriptor (%u)", rsize);
1568 return NULL;
1569 }
1570
1571 if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
1572 dbg("couldn't allocate rdesc memory");
1573 return NULL;
1574 }
1575
1576 if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
1577 dbg("reading report descriptor failed");
1578 kfree(rdesc);
1579 return NULL;
1580 }
1581
1582#ifdef DEBUG_DATA
1583 printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
1584 for (n = 0; n < rsize; n++)
1585 printk(" %02x", (unsigned char) rdesc[n]);
1586 printk("\n");
1587#endif
1588
1589 if (!(hid = hid_parse_report(rdesc, n))) {
1590 dbg("parsing report descriptor failed");
1591 kfree(rdesc);
1592 return NULL;
1593 }
1594
1595 kfree(rdesc);
1596 hid->quirks = quirks;
1597
1598 if (hid_alloc_buffers(dev, hid)) {
1599 hid_free_buffers(dev, hid);
1600 goto fail;
1601 }
1602
1603 for (n = 0; n < interface->desc.bNumEndpoints; n++) {
1604
1605 struct usb_endpoint_descriptor *endpoint;
1606 int pipe;
1607 int interval;
1608
1609 endpoint = &interface->endpoint[n].desc;
1610 if ((endpoint->bmAttributes & 3) != 3) /* Not an interrupt endpoint */
1611 continue;
1612
1613 /* handle potential highspeed HID correctly */
1614 interval = endpoint->bInterval;
1615 if (dev->speed == USB_SPEED_HIGH)
1616 interval = 1 << (interval - 1);
1617
1618 /* Change the polling interval of mice. */
1619 if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0)
1620 interval = hid_mousepoll_interval;
1621
1622 if (endpoint->bEndpointAddress & USB_DIR_IN) {
1623 if (hid->urbin)
1624 continue;
1625 if (!(hid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
1626 goto fail;
1627 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
1628 usb_fill_int_urb(hid->urbin, dev, pipe, hid->inbuf, 0,
1629 hid_irq_in, hid, interval);
1630 hid->urbin->transfer_dma = hid->inbuf_dma;
1631 hid->urbin->transfer_flags |=(URB_NO_TRANSFER_DMA_MAP | URB_ASYNC_UNLINK);
1632 } else {
1633 if (hid->urbout)
1634 continue;
1635 if (!(hid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
1636 goto fail;
1637 pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
1638 usb_fill_int_urb(hid->urbout, dev, pipe, hid->outbuf, 0,
1639 hid_irq_out, hid, interval);
1640 hid->urbout->transfer_dma = hid->outbuf_dma;
1641 hid->urbout->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_ASYNC_UNLINK);
1642 }
1643 }
1644
1645 if (!hid->urbin) {
1646 err("couldn't find an input interrupt endpoint");
1647 goto fail;
1648 }
1649
1650 init_waitqueue_head(&hid->wait);
1651
1652 spin_lock_init(&hid->outlock);
1653 spin_lock_init(&hid->ctrllock);
1654
1655 hid->version = le16_to_cpu(hdesc->bcdHID);
1656 hid->country = hdesc->bCountryCode;
1657 hid->dev = dev;
1658 hid->intf = intf;
1659 hid->ifnum = interface->desc.bInterfaceNumber;
1660
1661 hid->name[0] = 0;
1662
1663 if (!(buf = kmalloc(64, GFP_KERNEL)))
1664 goto fail;
1665
1666 if (dev->manufacturer) {
1667 strcat(hid->name, dev->manufacturer);
1668 if (dev->product)
1669 snprintf(hid->name, 64, "%s %s", hid->name, dev->product);
1670 } else if (dev->product) {
1671 snprintf(hid->name, 128, "%s", dev->product);
1672 } else
1673 snprintf(hid->name, 128, "%04x:%04x",
1674 le16_to_cpu(dev->descriptor.idVendor),
1675 le16_to_cpu(dev->descriptor.idProduct));
1676
1677 usb_make_path(dev, buf, 64);
1678 snprintf(hid->phys, 64, "%s/input%d", buf,
1679 intf->altsetting[0].desc.bInterfaceNumber);
1680
1681 if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
1682 hid->uniq[0] = 0;
1683
1684 kfree(buf);
1685
1686 hid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
1687 if (!hid->urbctrl)
1688 goto fail;
1689 usb_fill_control_urb(hid->urbctrl, dev, 0, (void *) hid->cr,
1690 hid->ctrlbuf, 1, hid_ctrl, hid);
1691 hid->urbctrl->setup_dma = hid->cr_dma;
1692 hid->urbctrl->transfer_dma = hid->ctrlbuf_dma;
1693 hid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP | URB_ASYNC_UNLINK);
1694
1695 return hid;
1696
1697fail:
1698
1699 if (hid->urbin)
1700 usb_free_urb(hid->urbin);
1701 if (hid->urbout)
1702 usb_free_urb(hid->urbout);
1703 if (hid->urbctrl)
1704 usb_free_urb(hid->urbctrl);
1705 hid_free_buffers(dev, hid);
1706 hid_free_device(hid);
1707
1708 return NULL;
1709}
1710
1711static void hid_disconnect(struct usb_interface *intf)
1712{
1713 struct hid_device *hid = usb_get_intfdata (intf);
1714
1715 if (!hid)
1716 return;
1717
1718 usb_set_intfdata(intf, NULL);
1719 usb_kill_urb(hid->urbin);
1720 usb_kill_urb(hid->urbout);
1721 usb_kill_urb(hid->urbctrl);
1722
1723 if (hid->claimed & HID_CLAIMED_INPUT)
1724 hidinput_disconnect(hid);
1725 if (hid->claimed & HID_CLAIMED_HIDDEV)
1726 hiddev_disconnect(hid);
1727
1728 usb_free_urb(hid->urbin);
1729 usb_free_urb(hid->urbctrl);
1730 if (hid->urbout)
1731 usb_free_urb(hid->urbout);
1732
1733 hid_free_buffers(hid->dev, hid);
1734 hid_free_device(hid);
1735}
1736
1737static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
1738{
1739 struct hid_device *hid;
1740 char path[64];
1741 int i;
1742 char *c;
1743
1744 dbg("HID probe called for ifnum %d",
1745 intf->altsetting->desc.bInterfaceNumber);
1746
1747 if (!(hid = usb_hid_configure(intf)))
1748 return -EIO;
1749
1750 hid_init_reports(hid);
1751 hid_dump_device(hid);
1752
1753 if (!hidinput_connect(hid))
1754 hid->claimed |= HID_CLAIMED_INPUT;
1755 if (!hiddev_connect(hid))
1756 hid->claimed |= HID_CLAIMED_HIDDEV;
1757
1758 usb_set_intfdata(intf, hid);
1759
1760 if (!hid->claimed) {
1761 printk ("HID device not claimed by input or hiddev\n");
1762 hid_disconnect(intf);
1763 return -EIO;
1764 }
1765
1766 printk(KERN_INFO);
1767
1768 if (hid->claimed & HID_CLAIMED_INPUT)
1769 printk("input");
1770 if (hid->claimed == (HID_CLAIMED_INPUT | HID_CLAIMED_HIDDEV))
1771 printk(",");
1772 if (hid->claimed & HID_CLAIMED_HIDDEV)
1773 printk("hiddev%d", hid->minor);
1774
1775 c = "Device";
1776 for (i = 0; i < hid->maxcollection; i++) {
1777 if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
1778 (hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1779 (hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
1780 c = hid_types[hid->collection[i].usage & 0xffff];
1781 break;
1782 }
1783 }
1784
1785 usb_make_path(interface_to_usbdev(intf), path, 63);
1786
1787 printk(": USB HID v%x.%02x %s [%s] on %s\n",
1788 hid->version >> 8, hid->version & 0xff, c, hid->name, path);
1789
1790 return 0;
1791}
1792
1793static int hid_suspend(struct usb_interface *intf, u32 state)
1794{
1795 struct hid_device *hid = usb_get_intfdata (intf);
1796
1797 usb_kill_urb(hid->urbin);
1798 intf->dev.power.power_state = state;
1799 dev_dbg(&intf->dev, "suspend\n");
1800 return 0;
1801}
1802
1803static int hid_resume(struct usb_interface *intf)
1804{
1805 struct hid_device *hid = usb_get_intfdata (intf);
1806 int status;
1807
1808 intf->dev.power.power_state = PM_SUSPEND_ON;
1809 if (hid->open)
1810 status = usb_submit_urb(hid->urbin, GFP_NOIO);
1811 else
1812 status = 0;
1813 dev_dbg(&intf->dev, "resume status %d\n", status);
1814 return status;
1815}
1816
1817static struct usb_device_id hid_usb_ids [] = {
1818 { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1819 .bInterfaceClass = USB_INTERFACE_CLASS_HID },
1820 { } /* Terminating entry */
1821};
1822
1823MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1824
1825static struct usb_driver hid_driver = {
1826 .owner = THIS_MODULE,
1827 .name = "usbhid",
1828 .probe = hid_probe,
1829 .disconnect = hid_disconnect,
1830 .suspend = hid_suspend,
1831 .resume = hid_resume,
1832 .id_table = hid_usb_ids,
1833};
1834
1835static int __init hid_init(void)
1836{
1837 int retval;
1838 retval = hiddev_init();
1839 if (retval)
1840 goto hiddev_init_fail;
1841 retval = usb_register(&hid_driver);
1842 if (retval)
1843 goto usb_register_fail;
1844 info(DRIVER_VERSION ":" DRIVER_DESC);
1845
1846 return 0;
1847usb_register_fail:
1848 hiddev_exit();
1849hiddev_init_fail:
1850 return retval;
1851}
1852
1853static void __exit hid_exit(void)
1854{
1855 usb_deregister(&hid_driver);
1856 hiddev_exit();
1857}
1858
1859module_init(hid_init);
1860module_exit(hid_exit);
1861
1862MODULE_AUTHOR(DRIVER_AUTHOR);
1863MODULE_DESCRIPTION(DRIVER_DESC);
1864MODULE_LICENSE(DRIVER_LICENSE);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-16 13:26:20 -0500