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[XFRM]: skb_cow_data() does not set proper owner for new skbs.
[linux-2.6/verdex.git] / drivers / usb / input / hid-core.c
blob869ff73690acebf04655691c4edc01a017a6abe4
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
46 static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
47 "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
48 /*
49 * Module parameters.
50 */
51
52 static unsigned int hid_mousepoll_interval;
53 module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
54 MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
55
56 /*
57 * Register a new report for a device.
58 */
59
60 static 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
90 static 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
118 static 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
167 static 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
182 static 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
195 static 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
213 static 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
276 static __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
286 static __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
300 static 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
391 static 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
483 static 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
520 static 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
532 static 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
545 static 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 kfree(device->rdesc);
562 kfree(device);
563 }
564
565 /*
566 * Fetch a report description item from the data stream. We support long
567 * items, though they are not used yet.
568 */
569
570 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
571 {
572 u8 b;
573
574 if ((end - start) <= 0)
575 return NULL;
576
577 b = *start++;
578
579 item->type = (b >> 2) & 3;
580 item->tag = (b >> 4) & 15;
581
582 if (item->tag == HID_ITEM_TAG_LONG) {
583
584 item->format = HID_ITEM_FORMAT_LONG;
585
586 if ((end - start) < 2)
587 return NULL;
588
589 item->size = *start++;
590 item->tag = *start++;
591
592 if ((end - start) < item->size)
593 return NULL;
594
595 item->data.longdata = start;
596 start += item->size;
597 return start;
598 }
599
600 item->format = HID_ITEM_FORMAT_SHORT;
601 item->size = b & 3;
602
603 switch (item->size) {
604
605 case 0:
606 return start;
607
608 case 1:
609 if ((end - start) < 1)
610 return NULL;
611 item->data.u8 = *start++;
612 return start;
613
614 case 2:
615 if ((end - start) < 2)
616 return NULL;
617 item->data.u16 = le16_to_cpu(get_unaligned((__le16*)start));
618 start = (__u8 *)((__le16 *)start + 1);
619 return start;
620
621 case 3:
622 item->size++;
623 if ((end - start) < 4)
624 return NULL;
625 item->data.u32 = le32_to_cpu(get_unaligned((__le32*)start));
626 start = (__u8 *)((__le32 *)start + 1);
627 return start;
628 }
629
630 return NULL;
631 }
632
633 /*
634 * Parse a report description into a hid_device structure. Reports are
635 * enumerated, fields are attached to these reports.
636 */
637
638 static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
639 {
640 struct hid_device *device;
641 struct hid_parser *parser;
642 struct hid_item item;
643 __u8 *end;
644 unsigned i;
645 static int (*dispatch_type[])(struct hid_parser *parser,
646 struct hid_item *item) = {
647 hid_parser_main,
648 hid_parser_global,
649 hid_parser_local,
650 hid_parser_reserved
651 };
652
653 if (!(device = kmalloc(sizeof(struct hid_device), GFP_KERNEL)))
654 return NULL;
655 memset(device, 0, sizeof(struct hid_device));
656
657 if (!(device->collection = kmalloc(sizeof(struct hid_collection) *
658 HID_DEFAULT_NUM_COLLECTIONS, GFP_KERNEL))) {
659 kfree(device);
660 return NULL;
661 }
662 memset(device->collection, 0, sizeof(struct hid_collection) *
663 HID_DEFAULT_NUM_COLLECTIONS);
664 device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
665
666 for (i = 0; i < HID_REPORT_TYPES; i++)
667 INIT_LIST_HEAD(&device->report_enum[i].report_list);
668
669 if (!(device->rdesc = (__u8 *)kmalloc(size, GFP_KERNEL))) {
670 kfree(device->collection);
671 kfree(device);
672 return NULL;
673 }
674 memcpy(device->rdesc, start, size);
675 device->rsize = size;
676
677 if (!(parser = kmalloc(sizeof(struct hid_parser), GFP_KERNEL))) {
678 kfree(device->rdesc);
679 kfree(device->collection);
680 kfree(device);
681 return NULL;
682 }
683 memset(parser, 0, sizeof(struct hid_parser));
684 parser->device = device;
685
686 end = start + size;
687 while ((start = fetch_item(start, end, &item)) != NULL) {
688
689 if (item.format != HID_ITEM_FORMAT_SHORT) {
690 dbg("unexpected long global item");
691 kfree(device->collection);
692 hid_free_device(device);
693 kfree(parser);
694 return NULL;
695 }
696
697 if (dispatch_type[item.type](parser, &item)) {
698 dbg("item %u %u %u %u parsing failed\n",
699 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
700 kfree(device->collection);
701 hid_free_device(device);
702 kfree(parser);
703 return NULL;
704 }
705
706 if (start == end) {
707 if (parser->collection_stack_ptr) {
708 dbg("unbalanced collection at end of report description");
709 kfree(device->collection);
710 hid_free_device(device);
711 kfree(parser);
712 return NULL;
713 }
714 if (parser->local.delimiter_depth) {
715 dbg("unbalanced delimiter at end of report description");
716 kfree(device->collection);
717 hid_free_device(device);
718 kfree(parser);
719 return NULL;
720 }
721 kfree(parser);
722 return device;
723 }
724 }
725
726 dbg("item fetching failed at offset %d\n", (int)(end - start));
727 kfree(device->collection);
728 hid_free_device(device);
729 kfree(parser);
730 return NULL;
731 }
732
733 /*
734 * Convert a signed n-bit integer to signed 32-bit integer. Common
735 * cases are done through the compiler, the screwed things has to be
736 * done by hand.
737 */
738
739 static __inline__ __s32 snto32(__u32 value, unsigned n)
740 {
741 switch (n) {
742 case 8: return ((__s8)value);
743 case 16: return ((__s16)value);
744 case 32: return ((__s32)value);
745 }
746 return value & (1 << (n - 1)) ? value | (-1 << n) : value;
747 }
748
749 /*
750 * Convert a signed 32-bit integer to a signed n-bit integer.
751 */
752
753 static __inline__ __u32 s32ton(__s32 value, unsigned n)
754 {
755 __s32 a = value >> (n - 1);
756 if (a && a != -1)
757 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
758 return value & ((1 << n) - 1);
759 }
760
761 /*
762 * Extract/implement a data field from/to a report.
763 */
764
765 static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
766 {
767 report += (offset >> 5) << 2; offset &= 31;
768 return (le64_to_cpu(get_unaligned((__le64*)report)) >> offset) & ((1 << n) - 1);
769 }
770
771 static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
772 {
773 report += (offset >> 5) << 2; offset &= 31;
774 put_unaligned((get_unaligned((__le64*)report)
775 & cpu_to_le64(~((((__u64) 1 << n) - 1) << offset)))
776 | cpu_to_le64((__u64)value << offset), (__le64*)report);
777 }
778
779 /*
780 * Search an array for a value.
781 */
782
783 static __inline__ int search(__s32 *array, __s32 value, unsigned n)
784 {
785 while (n--) {
786 if (*array++ == value)
787 return 0;
788 }
789 return -1;
790 }
791
792 static void hid_process_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs)
793 {
794 hid_dump_input(usage, value);
795 if (hid->claimed & HID_CLAIMED_INPUT)
796 hidinput_hid_event(hid, field, usage, value, regs);
797 if (hid->claimed & HID_CLAIMED_HIDDEV)
798 hiddev_hid_event(hid, field, usage, value, regs);
799 }
800
801 /*
802 * Analyse a received field, and fetch the data from it. The field
803 * content is stored for next report processing (we do differential
804 * reporting to the layer).
805 */
806
807 static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, struct pt_regs *regs)
808 {
809 unsigned n;
810 unsigned count = field->report_count;
811 unsigned offset = field->report_offset;
812 unsigned size = field->report_size;
813 __s32 min = field->logical_minimum;
814 __s32 max = field->logical_maximum;
815 __s32 *value;
816
817 if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC)))
818 return;
819
820 for (n = 0; n < count; n++) {
821
822 value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
823 extract(data, offset + n * size, size);
824
825 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
826 && value[n] >= min && value[n] <= max
827 && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
828 goto exit;
829 }
830
831 for (n = 0; n < count; n++) {
832
833 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
834 hid_process_event(hid, field, &field->usage[n], value[n], regs);
835 continue;
836 }
837
838 if (field->value[n] >= min && field->value[n] <= max
839 && field->usage[field->value[n] - min].hid
840 && search(value, field->value[n], count))
841 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, regs);
842
843 if (value[n] >= min && value[n] <= max
844 && field->usage[value[n] - min].hid
845 && search(field->value, value[n], count))
846 hid_process_event(hid, field, &field->usage[value[n] - min], 1, regs);
847 }
848
849 memcpy(field->value, value, count * sizeof(__s32));
850 exit:
851 kfree(value);
852 }
853
854 static int hid_input_report(int type, struct urb *urb, struct pt_regs *regs)
855 {
856 struct hid_device *hid = urb->context;
857 struct hid_report_enum *report_enum = hid->report_enum + type;
858 u8 *data = urb->transfer_buffer;
859 int len = urb->actual_length;
860 struct hid_report *report;
861 int n, size;
862
863 if (!len) {
864 dbg("empty report");
865 return -1;
866 }
867
868 #ifdef DEBUG_DATA
869 printk(KERN_DEBUG __FILE__ ": report (size %u) (%snumbered)\n", len, report_enum->numbered ? "" : "un");
870 #endif
871
872 n = 0; /* Normally report number is 0 */
873 if (report_enum->numbered) { /* Device uses numbered reports, data[0] is report number */
874 n = *data++;
875 len--;
876 }
877
878 #ifdef DEBUG_DATA
879 {
880 int i;
881 printk(KERN_DEBUG __FILE__ ": report %d (size %u) = ", n, len);
882 for (i = 0; i < len; i++)
883 printk(" %02x", data[i]);
884 printk("\n");
885 }
886 #endif
887
888 if (!(report = report_enum->report_id_hash[n])) {
889 dbg("undefined report_id %d received", n);
890 return -1;
891 }
892
893 size = ((report->size - 1) >> 3) + 1;
894
895 if (len < size)
896 dbg("report %d is too short, (%d < %d)", report->id, len, size);
897
898 if (hid->claimed & HID_CLAIMED_HIDDEV)
899 hiddev_report_event(hid, report);
900
901 for (n = 0; n < report->maxfield; n++)
902 hid_input_field(hid, report->field[n], data, regs);
903
904 if (hid->claimed & HID_CLAIMED_INPUT)
905 hidinput_report_event(hid, report);
906
907 return 0;
908 }
909
910 /*
911 * Input interrupt completion handler.
912 */
913
914 static void hid_irq_in(struct urb *urb, struct pt_regs *regs)
915 {
916 struct hid_device *hid = urb->context;
917 int status;
918
919 switch (urb->status) {
920 case 0: /* success */
921 hid_input_report(HID_INPUT_REPORT, urb, regs);
922 break;
923 case -ECONNRESET: /* unlink */
924 case -ENOENT:
925 case -EPERM:
926 case -ESHUTDOWN: /* unplug */
927 case -EILSEQ: /* unplug timeout on uhci */
928 return;
929 case -ETIMEDOUT: /* NAK */
930 break;
931 default: /* error */
932 warn("input irq status %d received", urb->status);
933 }
934
935 status = usb_submit_urb(urb, SLAB_ATOMIC);
936 if (status)
937 err("can't resubmit intr, %s-%s/input%d, status %d",
938 hid->dev->bus->bus_name, hid->dev->devpath,
939 hid->ifnum, status);
940 }
941
942 /*
943 * Output the field into the report.
944 */
945
946 static void hid_output_field(struct hid_field *field, __u8 *data)
947 {
948 unsigned count = field->report_count;
949 unsigned offset = field->report_offset;
950 unsigned size = field->report_size;
951 unsigned n;
952
953 for (n = 0; n < count; n++) {
954 if (field->logical_minimum < 0) /* signed values */
955 implement(data, offset + n * size, size, s32ton(field->value[n], size));
956 else /* unsigned values */
957 implement(data, offset + n * size, size, field->value[n]);
958 }
959 }
960
961 /*
962 * Create a report.
963 */
964
965 static void hid_output_report(struct hid_report *report, __u8 *data)
966 {
967 unsigned n;
968
969 if (report->id > 0)
970 *data++ = report->id;
971
972 for (n = 0; n < report->maxfield; n++)
973 hid_output_field(report->field[n], data);
974 }
975
976 /*
977 * Set a field value. The report this field belongs to has to be
978 * created and transferred to the device, to set this value in the
979 * device.
980 */
981
982 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
983 {
984 unsigned size = field->report_size;
985
986 hid_dump_input(field->usage + offset, value);
987
988 if (offset >= field->report_count) {
989 dbg("offset (%d) exceeds report_count (%d)", offset, field->report_count);
990 hid_dump_field(field, 8);
991 return -1;
992 }
993 if (field->logical_minimum < 0) {
994 if (value != snto32(s32ton(value, size), size)) {
995 dbg("value %d is out of range", value);
996 return -1;
997 }
998 }
999 field->value[offset] = value;
1000 return 0;
1001 }
1002
1003 /*
1004 * Find a report field with a specified HID usage.
1005 */
1006
1007 struct hid_field *hid_find_field_by_usage(struct hid_device *hid, __u32 wanted_usage, int type)
1008 {
1009 struct hid_report *report;
1010 int i;
1011
1012 list_for_each_entry(report, &hid->report_enum[type].report_list, list)
1013 for (i = 0; i < report->maxfield; i++)
1014 if (report->field[i]->logical == wanted_usage)
1015 return report->field[i];
1016 return NULL;
1017 }
1018
1019 static int hid_submit_out(struct hid_device *hid)
1020 {
1021 struct hid_report *report;
1022
1023 report = hid->out[hid->outtail];
1024
1025 hid_output_report(report, hid->outbuf);
1026 hid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1027 hid->urbout->dev = hid->dev;
1028
1029 dbg("submitting out urb");
1030
1031 if (usb_submit_urb(hid->urbout, GFP_ATOMIC)) {
1032 err("usb_submit_urb(out) failed");
1033 return -1;
1034 }
1035
1036 return 0;
1037 }
1038
1039 static int hid_submit_ctrl(struct hid_device *hid)
1040 {
1041 struct hid_report *report;
1042 unsigned char dir;
1043 int len;
1044
1045 report = hid->ctrl[hid->ctrltail].report;
1046 dir = hid->ctrl[hid->ctrltail].dir;
1047
1048 len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1049 if (dir == USB_DIR_OUT) {
1050 hid_output_report(report, hid->ctrlbuf);
1051 hid->urbctrl->pipe = usb_sndctrlpipe(hid->dev, 0);
1052 hid->urbctrl->transfer_buffer_length = len;
1053 } else {
1054 int maxpacket, padlen;
1055
1056 hid->urbctrl->pipe = usb_rcvctrlpipe(hid->dev, 0);
1057 maxpacket = usb_maxpacket(hid->dev, hid->urbctrl->pipe, 0);
1058 if (maxpacket > 0) {
1059 padlen = (len + maxpacket - 1) / maxpacket;
1060 padlen *= maxpacket;
1061 if (padlen > HID_BUFFER_SIZE)
1062 padlen = HID_BUFFER_SIZE;
1063 } else
1064 padlen = 0;
1065 hid->urbctrl->transfer_buffer_length = padlen;
1066 }
1067 hid->urbctrl->dev = hid->dev;
1068
1069 hid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
1070 hid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
1071 hid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
1072 hid->cr->wIndex = cpu_to_le16(hid->ifnum);
1073 hid->cr->wLength = cpu_to_le16(len);
1074
1075 dbg("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u",
1076 hid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
1077 hid->cr->wValue, hid->cr->wIndex, hid->cr->wLength);
1078
1079 if (usb_submit_urb(hid->urbctrl, GFP_ATOMIC)) {
1080 err("usb_submit_urb(ctrl) failed");
1081 return -1;
1082 }
1083
1084 return 0;
1085 }
1086
1087 /*
1088 * Output interrupt completion handler.
1089 */
1090
1091 static void hid_irq_out(struct urb *urb, struct pt_regs *regs)
1092 {
1093 struct hid_device *hid = urb->context;
1094 unsigned long flags;
1095 int unplug = 0;
1096
1097 switch (urb->status) {
1098 case 0: /* success */
1099 case -ESHUTDOWN: /* unplug */
1100 case -EILSEQ: /* unplug timeout on uhci */
1101 unplug = 1;
1102 case -ECONNRESET: /* unlink */
1103 case -ENOENT:
1104 break;
1105 default: /* error */
1106 warn("output irq status %d received", urb->status);
1107 }
1108
1109 spin_lock_irqsave(&hid->outlock, flags);
1110
1111 if (unplug)
1112 hid->outtail = hid->outhead;
1113 else
1114 hid->outtail = (hid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
1115
1116 if (hid->outhead != hid->outtail) {
1117 if (hid_submit_out(hid)) {
1118 clear_bit(HID_OUT_RUNNING, &hid->iofl);;
1119 wake_up(&hid->wait);
1120 }
1121 spin_unlock_irqrestore(&hid->outlock, flags);
1122 return;
1123 }
1124
1125 clear_bit(HID_OUT_RUNNING, &hid->iofl);
1126 spin_unlock_irqrestore(&hid->outlock, flags);
1127 wake_up(&hid->wait);
1128 }
1129
1130 /*
1131 * Control pipe completion handler.
1132 */
1133
1134 static void hid_ctrl(struct urb *urb, struct pt_regs *regs)
1135 {
1136 struct hid_device *hid = urb->context;
1137 unsigned long flags;
1138 int unplug = 0;
1139
1140 spin_lock_irqsave(&hid->ctrllock, flags);
1141
1142 switch (urb->status) {
1143 case 0: /* success */
1144 if (hid->ctrl[hid->ctrltail].dir == USB_DIR_IN)
1145 hid_input_report(hid->ctrl[hid->ctrltail].report->type, urb, regs);
1146 case -ESHUTDOWN: /* unplug */
1147 case -EILSEQ: /* unplug timectrl on uhci */
1148 unplug = 1;
1149 case -ECONNRESET: /* unlink */
1150 case -ENOENT:
1151 case -EPIPE: /* report not available */
1152 break;
1153 default: /* error */
1154 warn("ctrl urb status %d received", urb->status);
1155 }
1156
1157 if (unplug)
1158 hid->ctrltail = hid->ctrlhead;
1159 else
1160 hid->ctrltail = (hid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
1161
1162 if (hid->ctrlhead != hid->ctrltail) {
1163 if (hid_submit_ctrl(hid)) {
1164 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1165 wake_up(&hid->wait);
1166 }
1167 spin_unlock_irqrestore(&hid->ctrllock, flags);
1168 return;
1169 }
1170
1171 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1172 spin_unlock_irqrestore(&hid->ctrllock, flags);
1173 wake_up(&hid->wait);
1174 }
1175
1176 void hid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
1177 {
1178 int head;
1179 unsigned long flags;
1180
1181 if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
1182 return;
1183
1184 if (hid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
1185
1186 spin_lock_irqsave(&hid->outlock, flags);
1187
1188 if ((head = (hid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == hid->outtail) {
1189 spin_unlock_irqrestore(&hid->outlock, flags);
1190 warn("output queue full");
1191 return;
1192 }
1193
1194 hid->out[hid->outhead] = report;
1195 hid->outhead = head;
1196
1197 if (!test_and_set_bit(HID_OUT_RUNNING, &hid->iofl))
1198 if (hid_submit_out(hid))
1199 clear_bit(HID_OUT_RUNNING, &hid->iofl);
1200
1201 spin_unlock_irqrestore(&hid->outlock, flags);
1202 return;
1203 }
1204
1205 spin_lock_irqsave(&hid->ctrllock, flags);
1206
1207 if ((head = (hid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == hid->ctrltail) {
1208 spin_unlock_irqrestore(&hid->ctrllock, flags);
1209 warn("control queue full");
1210 return;
1211 }
1212
1213 hid->ctrl[hid->ctrlhead].report = report;
1214 hid->ctrl[hid->ctrlhead].dir = dir;
1215 hid->ctrlhead = head;
1216
1217 if (!test_and_set_bit(HID_CTRL_RUNNING, &hid->iofl))
1218 if (hid_submit_ctrl(hid))
1219 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1220
1221 spin_unlock_irqrestore(&hid->ctrllock, flags);
1222 }
1223
1224 int hid_wait_io(struct hid_device *hid)
1225 {
1226 if (!wait_event_timeout(hid->wait, (!test_bit(HID_CTRL_RUNNING, &hid->iofl) &&
1227 !test_bit(HID_OUT_RUNNING, &hid->iofl)),
1228 10*HZ)) {
1229 dbg("timeout waiting for ctrl or out queue to clear");
1230 return -1;
1231 }
1232
1233 return 0;
1234 }
1235
1236 static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
1237 unsigned char type, void *buf, int size)
1238 {
1239 int result, retries = 4;
1240
1241 memset(buf,0,size); // Make sure we parse really received data
1242
1243 do {
1244 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
1245 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
1246 (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT);
1247 retries--;
1248 } while (result < size && retries);
1249 return result;
1250 }
1251
1252 int hid_open(struct hid_device *hid)
1253 {
1254 if (hid->open++)
1255 return 0;
1256
1257 hid->urbin->dev = hid->dev;
1258
1259 if (usb_submit_urb(hid->urbin, GFP_KERNEL))
1260 return -EIO;
1261
1262 return 0;
1263 }
1264
1265 void hid_close(struct hid_device *hid)
1266 {
1267 if (!--hid->open)
1268 usb_kill_urb(hid->urbin);
1269 }
1270
1271 /*
1272 * Initialize all reports
1273 */
1274
1275 void hid_init_reports(struct hid_device *hid)
1276 {
1277 struct hid_report *report;
1278 int err, ret;
1279
1280 list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list) {
1281 int size = ((report->size - 1) >> 3) + 1 + hid->report_enum[HID_INPUT_REPORT].numbered;
1282 if (size > HID_BUFFER_SIZE) size = HID_BUFFER_SIZE;
1283 if (size > hid->urbin->transfer_buffer_length)
1284 hid->urbin->transfer_buffer_length = size;
1285 hid_submit_report(hid, report, USB_DIR_IN);
1286 }
1287
1288 list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list)
1289 hid_submit_report(hid, report, USB_DIR_IN);
1290
1291 err = 0;
1292 ret = hid_wait_io(hid);
1293 while (ret) {
1294 err |= ret;
1295 if (test_bit(HID_CTRL_RUNNING, &hid->iofl))
1296 usb_kill_urb(hid->urbctrl);
1297 if (test_bit(HID_OUT_RUNNING, &hid->iofl))
1298 usb_kill_urb(hid->urbout);
1299 ret = hid_wait_io(hid);
1300 }
1301
1302 if (err)
1303 warn("timeout initializing reports\n");
1304
1305 usb_control_msg(hid->dev, usb_sndctrlpipe(hid->dev, 0),
1306 HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0,
1307 hid->ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT);
1308 }
1309
1310 #define USB_VENDOR_ID_WACOM 0x056a
1311 #define USB_DEVICE_ID_WACOM_PENPARTNER 0x0000
1312 #define USB_DEVICE_ID_WACOM_GRAPHIRE 0x0010
1313 #define USB_DEVICE_ID_WACOM_INTUOS 0x0020
1314 #define USB_DEVICE_ID_WACOM_PL 0x0030
1315 #define USB_DEVICE_ID_WACOM_INTUOS2 0x0040
1316 #define USB_DEVICE_ID_WACOM_VOLITO 0x0060
1317 #define USB_DEVICE_ID_WACOM_PTU 0x0003
1318
1319 #define USB_VENDOR_ID_KBGEAR 0x084e
1320 #define USB_DEVICE_ID_KBGEAR_JAMSTUDIO 0x1001
1321
1322 #define USB_VENDOR_ID_AIPTEK 0x08ca
1323 #define USB_DEVICE_ID_AIPTEK_01 0x0001
1324 #define USB_DEVICE_ID_AIPTEK_10 0x0010
1325 #define USB_DEVICE_ID_AIPTEK_20 0x0020
1326 #define USB_DEVICE_ID_AIPTEK_21 0x0021
1327 #define USB_DEVICE_ID_AIPTEK_22 0x0022
1328 #define USB_DEVICE_ID_AIPTEK_23 0x0023
1329 #define USB_DEVICE_ID_AIPTEK_24 0x0024
1330
1331 #define USB_VENDOR_ID_GRIFFIN 0x077d
1332 #define USB_DEVICE_ID_POWERMATE 0x0410
1333 #define USB_DEVICE_ID_SOUNDKNOB 0x04AA
1334
1335 #define USB_VENDOR_ID_ATEN 0x0557
1336 #define USB_DEVICE_ID_ATEN_UC100KM 0x2004
1337 #define USB_DEVICE_ID_ATEN_CS124U 0x2202
1338 #define USB_DEVICE_ID_ATEN_2PORTKVM 0x2204
1339 #define USB_DEVICE_ID_ATEN_4PORTKVM 0x2205
1340 #define USB_DEVICE_ID_ATEN_4PORTKVMC 0x2208
1341
1342 #define USB_VENDOR_ID_TOPMAX 0x0663
1343 #define USB_DEVICE_ID_TOPMAX_COBRAPAD 0x0103
1344
1345 #define USB_VENDOR_ID_HAPP 0x078b
1346 #define USB_DEVICE_ID_UGCI_DRIVING 0x0010
1347 #define USB_DEVICE_ID_UGCI_FLYING 0x0020
1348 #define USB_DEVICE_ID_UGCI_FIGHTING 0x0030
1349
1350 #define USB_VENDOR_ID_MGE 0x0463
1351 #define USB_DEVICE_ID_MGE_UPS 0xffff
1352 #define USB_DEVICE_ID_MGE_UPS1 0x0001
1353
1354 #define USB_VENDOR_ID_ONTRAK 0x0a07
1355 #define USB_DEVICE_ID_ONTRAK_ADU100 0x0064
1356
1357 #define USB_VENDOR_ID_TANGTOP 0x0d3d
1358 #define USB_DEVICE_ID_TANGTOP_USBPS2 0x0001
1359
1360 #define USB_VENDOR_ID_ESSENTIAL_REALITY 0x0d7f
1361 #define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100
1362
1363 #define USB_VENDOR_ID_A4TECH 0x09da
1364 #define USB_DEVICE_ID_A4TECH_WCP32PU 0x0006
1365
1366 #define USB_VENDOR_ID_CYPRESS 0x04b4
1367 #define USB_DEVICE_ID_CYPRESS_MOUSE 0x0001
1368 #define USB_DEVICE_ID_CYPRESS_HIDCOM 0x5500
1369
1370 #define USB_VENDOR_ID_BERKSHIRE 0x0c98
1371 #define USB_DEVICE_ID_BERKSHIRE_PCWD 0x1140
1372
1373 #define USB_VENDOR_ID_ALPS 0x0433
1374 #define USB_DEVICE_ID_IBM_GAMEPAD 0x1101
1375
1376 #define USB_VENDOR_ID_SAITEK 0x06a3
1377 #define USB_DEVICE_ID_SAITEK_RUMBLEPAD 0xff17
1378
1379 #define USB_VENDOR_ID_NEC 0x073e
1380 #define USB_DEVICE_ID_NEC_USB_GAME_PAD 0x0301
1381
1382 #define USB_VENDOR_ID_CHIC 0x05fe
1383 #define USB_DEVICE_ID_CHIC_GAMEPAD 0x0014
1384
1385 #define USB_VENDOR_ID_GLAB 0x06c2
1386 #define USB_DEVICE_ID_4_PHIDGETSERVO_30 0x0038
1387 #define USB_DEVICE_ID_1_PHIDGETSERVO_30 0x0039
1388 #define USB_DEVICE_ID_8_8_8_IF_KIT 0x0045
1389 #define USB_DEVICE_ID_0_0_4_IF_KIT 0x0040
1390 #define USB_DEVICE_ID_0_8_8_IF_KIT 0x0053
1391
1392 #define USB_VENDOR_ID_WISEGROUP 0x0925
1393 #define USB_DEVICE_ID_1_PHIDGETSERVO_20 0x8101
1394 #define USB_DEVICE_ID_4_PHIDGETSERVO_20 0x8104
1395
1396 #define USB_VENDOR_ID_CODEMERCS 0x07c0
1397 #define USB_DEVICE_ID_CODEMERCS_IOW40 0x1500
1398 #define USB_DEVICE_ID_CODEMERCS_IOW24 0x1501
1399 #define USB_DEVICE_ID_CODEMERCS_IOW48 0x1502
1400 #define USB_DEVICE_ID_CODEMERCS_IOW28 0x1503
1401
1402 #define USB_VENDOR_ID_DELORME 0x1163
1403 #define USB_DEVICE_ID_DELORME_EARTHMATE 0x0100
1404
1405 #define USB_VENDOR_ID_MCC 0x09db
1406 #define USB_DEVICE_ID_MCC_PMD1024LS 0x0076
1407 #define USB_DEVICE_ID_MCC_PMD1208LS 0x007a
1408
1409 #define USB_VENDOR_ID_CHICONY 0x04f2
1410 #define USB_DEVICE_ID_CHICONY_USBHUB_KB 0x0100
1411
1412 #define USB_VENDOR_ID_BTC 0x046e
1413 #define USB_DEVICE_ID_BTC_KEYBOARD 0x5303
1414
1415
1416 /*
1417 * Alphabetically sorted blacklist by quirk type.
1418 */
1419
1420 static struct hid_blacklist {
1421 __u16 idVendor;
1422 __u16 idProduct;
1423 unsigned quirks;
1424 } hid_blacklist[] = {
1425
1426 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01, HID_QUIRK_IGNORE },
1427 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10, HID_QUIRK_IGNORE },
1428 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20, HID_QUIRK_IGNORE },
1429 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21, HID_QUIRK_IGNORE },
1430 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22, HID_QUIRK_IGNORE },
1431 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23, HID_QUIRK_IGNORE },
1432 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24, HID_QUIRK_IGNORE },
1433 { USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD, HID_QUIRK_IGNORE },
1434 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW40, HID_QUIRK_IGNORE },
1435 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW24, HID_QUIRK_IGNORE },
1436 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW48, HID_QUIRK_IGNORE },
1437 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW28, HID_QUIRK_IGNORE },
1438 { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM, HID_QUIRK_IGNORE },
1439 { USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE, HID_QUIRK_IGNORE },
1440 { USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5, HID_QUIRK_IGNORE },
1441 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1442 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1443 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT, HID_QUIRK_IGNORE },
1444 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT, HID_QUIRK_IGNORE },
1445 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT, HID_QUIRK_IGNORE },
1446 { USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE, HID_QUIRK_IGNORE },
1447 { USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB, HID_QUIRK_IGNORE },
1448 { USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO, HID_QUIRK_IGNORE },
1449 { USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS, HID_QUIRK_IGNORE },
1450 { USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS, HID_QUIRK_IGNORE },
1451 { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_IGNORE },
1452 { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1, HID_QUIRK_IGNORE },
1453 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100, HID_QUIRK_IGNORE },
1454 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100, HID_QUIRK_IGNORE },
1455 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200, HID_QUIRK_IGNORE },
1456 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300, HID_QUIRK_IGNORE },
1457 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400, HID_QUIRK_IGNORE },
1458 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500, HID_QUIRK_IGNORE },
1459 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PENPARTNER, HID_QUIRK_IGNORE },
1460 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE, HID_QUIRK_IGNORE },
1461 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 1, HID_QUIRK_IGNORE },
1462 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 2, HID_QUIRK_IGNORE },
1463 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 3, HID_QUIRK_IGNORE },
1464 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 4, HID_QUIRK_IGNORE },
1465 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS, HID_QUIRK_IGNORE },
1466 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 1, HID_QUIRK_IGNORE },
1467 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 2, HID_QUIRK_IGNORE },
1468 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 3, HID_QUIRK_IGNORE },
1469 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 4, HID_QUIRK_IGNORE },
1470 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL, HID_QUIRK_IGNORE },
1471 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 1, HID_QUIRK_IGNORE },
1472 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 2, HID_QUIRK_IGNORE },
1473 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 3, HID_QUIRK_IGNORE },
1474 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 4, HID_QUIRK_IGNORE },
1475 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 5, HID_QUIRK_IGNORE },
1476 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 1, HID_QUIRK_IGNORE },
1477 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 2, HID_QUIRK_IGNORE },
1478 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 3, HID_QUIRK_IGNORE },
1479 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 4, HID_QUIRK_IGNORE },
1480 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 5, HID_QUIRK_IGNORE },
1481 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 7, HID_QUIRK_IGNORE },
1482 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO, HID_QUIRK_IGNORE },
1483 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PTU, HID_QUIRK_IGNORE },
1484 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1485 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1486
1487 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
1488 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
1489 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
1490 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
1491 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
1492 { USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_KEYBOARD, HID_QUIRK_NOGET},
1493 { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_USBHUB_KB, HID_QUIRK_NOGET},
1494 { USB_VENDOR_ID_TANGTOP, USB_DEVICE_ID_TANGTOP_USBPS2, HID_QUIRK_NOGET },
1495
1496 { USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU, HID_QUIRK_2WHEEL_MOUSE_HACK_7 },
1497 { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE, HID_QUIRK_2WHEEL_MOUSE_HACK_5 },
1498
1499 { USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
1500 { USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD },
1501 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1502 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1503 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1504 { USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD },
1505 { USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
1506 { USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
1507
1508 { 0, 0 }
1509 };
1510
1511 static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
1512 {
1513 if (!(hid->inbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->inbuf_dma)))
1514 return -1;
1515 if (!(hid->outbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->outbuf_dma)))
1516 return -1;
1517 if (!(hid->cr = usb_buffer_alloc(dev, sizeof(*(hid->cr)), SLAB_ATOMIC, &hid->cr_dma)))
1518 return -1;
1519 if (!(hid->ctrlbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->ctrlbuf_dma)))
1520 return -1;
1521
1522 return 0;
1523 }
1524
1525 static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
1526 {
1527 if (hid->inbuf)
1528 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->inbuf, hid->inbuf_dma);
1529 if (hid->outbuf)
1530 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->outbuf, hid->outbuf_dma);
1531 if (hid->cr)
1532 usb_buffer_free(dev, sizeof(*(hid->cr)), hid->cr, hid->cr_dma);
1533 if (hid->ctrlbuf)
1534 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->ctrlbuf, hid->ctrlbuf_dma);
1535 }
1536
1537 static struct hid_device *usb_hid_configure(struct usb_interface *intf)
1538 {
1539 struct usb_host_interface *interface = intf->cur_altsetting;
1540 struct usb_device *dev = interface_to_usbdev (intf);
1541 struct hid_descriptor *hdesc;
1542 struct hid_device *hid;
1543 unsigned quirks = 0, rsize = 0;
1544 char *buf, *rdesc;
1545 int n;
1546
1547 for (n = 0; hid_blacklist[n].idVendor; n++)
1548 if ((hid_blacklist[n].idVendor == le16_to_cpu(dev->descriptor.idVendor)) &&
1549 (hid_blacklist[n].idProduct == le16_to_cpu(dev->descriptor.idProduct)))
1550 quirks = hid_blacklist[n].quirks;
1551
1552 if (quirks & HID_QUIRK_IGNORE)
1553 return NULL;
1554
1555 if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && ((!interface->desc.bNumEndpoints) ||
1556 usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
1557 dbg("class descriptor not present\n");
1558 return NULL;
1559 }
1560
1561 for (n = 0; n < hdesc->bNumDescriptors; n++)
1562 if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
1563 rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
1564
1565 if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
1566 dbg("weird size of report descriptor (%u)", rsize);
1567 return NULL;
1568 }
1569
1570 if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
1571 dbg("couldn't allocate rdesc memory");
1572 return NULL;
1573 }
1574
1575 if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
1576 dbg("reading report descriptor failed");
1577 kfree(rdesc);
1578 return NULL;
1579 }
1580
1581 #ifdef DEBUG_DATA
1582 printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
1583 for (n = 0; n < rsize; n++)
1584 printk(" %02x", (unsigned char) rdesc[n]);
1585 printk("\n");
1586 #endif
1587
1588 if (!(hid = hid_parse_report(rdesc, n))) {
1589 dbg("parsing report descriptor failed");
1590 kfree(rdesc);
1591 return NULL;
1592 }
1593
1594 kfree(rdesc);
1595 hid->quirks = quirks;
1596
1597 if (hid_alloc_buffers(dev, hid)) {
1598 hid_free_buffers(dev, hid);
1599 goto fail;
1600 }
1601
1602 for (n = 0; n < interface->desc.bNumEndpoints; n++) {
1603
1604 struct usb_endpoint_descriptor *endpoint;
1605 int pipe;
1606 int interval;
1607
1608 endpoint = &interface->endpoint[n].desc;
1609 if ((endpoint->bmAttributes & 3) != 3) /* Not an interrupt endpoint */
1610 continue;
1611
1612 /* handle potential highspeed HID correctly */
1613 interval = endpoint->bInterval;
1614 if (dev->speed == USB_SPEED_HIGH)
1615 interval = 1 << (interval - 1);
1616
1617 /* Change the polling interval of mice. */
1618 if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0)
1619 interval = hid_mousepoll_interval;
1620
1621 if (endpoint->bEndpointAddress & USB_DIR_IN) {
1622 if (hid->urbin)
1623 continue;
1624 if (!(hid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
1625 goto fail;
1626 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
1627 usb_fill_int_urb(hid->urbin, dev, pipe, hid->inbuf, 0,
1628 hid_irq_in, hid, interval);
1629 hid->urbin->transfer_dma = hid->inbuf_dma;
1630 hid->urbin->transfer_flags |=(URB_NO_TRANSFER_DMA_MAP | URB_ASYNC_UNLINK);
1631 } else {
1632 if (hid->urbout)
1633 continue;
1634 if (!(hid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
1635 goto fail;
1636 pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
1637 usb_fill_int_urb(hid->urbout, dev, pipe, hid->outbuf, 0,
1638 hid_irq_out, hid, interval);
1639 hid->urbout->transfer_dma = hid->outbuf_dma;
1640 hid->urbout->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_ASYNC_UNLINK);
1641 }
1642 }
1643
1644 if (!hid->urbin) {
1645 err("couldn't find an input interrupt endpoint");
1646 goto fail;
1647 }
1648
1649 init_waitqueue_head(&hid->wait);
1650
1651 spin_lock_init(&hid->outlock);
1652 spin_lock_init(&hid->ctrllock);
1653
1654 hid->version = le16_to_cpu(hdesc->bcdHID);
1655 hid->country = hdesc->bCountryCode;
1656 hid->dev = dev;
1657 hid->intf = intf;
1658 hid->ifnum = interface->desc.bInterfaceNumber;
1659
1660 hid->name[0] = 0;
1661
1662 if (!(buf = kmalloc(64, GFP_KERNEL)))
1663 goto fail;
1664
1665 if (dev->manufacturer) {
1666 strcat(hid->name, dev->manufacturer);
1667 if (dev->product)
1668 snprintf(hid->name, 64, "%s %s", hid->name, dev->product);
1669 } else if (dev->product) {
1670 snprintf(hid->name, 128, "%s", dev->product);
1671 } else
1672 snprintf(hid->name, 128, "%04x:%04x",
1673 le16_to_cpu(dev->descriptor.idVendor),
1674 le16_to_cpu(dev->descriptor.idProduct));
1675
1676 usb_make_path(dev, buf, 64);
1677 snprintf(hid->phys, 64, "%s/input%d", buf,
1678 intf->altsetting[0].desc.bInterfaceNumber);
1679
1680 if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
1681 hid->uniq[0] = 0;
1682
1683 kfree(buf);
1684
1685 hid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
1686 if (!hid->urbctrl)
1687 goto fail;
1688 usb_fill_control_urb(hid->urbctrl, dev, 0, (void *) hid->cr,
1689 hid->ctrlbuf, 1, hid_ctrl, hid);
1690 hid->urbctrl->setup_dma = hid->cr_dma;
1691 hid->urbctrl->transfer_dma = hid->ctrlbuf_dma;
1692 hid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP | URB_ASYNC_UNLINK);
1693
1694 return hid;
1695
1696 fail:
1697
1698 if (hid->urbin)
1699 usb_free_urb(hid->urbin);
1700 if (hid->urbout)
1701 usb_free_urb(hid->urbout);
1702 if (hid->urbctrl)
1703 usb_free_urb(hid->urbctrl);
1704 hid_free_buffers(dev, hid);
1705 hid_free_device(hid);
1706
1707 return NULL;
1708 }
1709
1710 static void hid_disconnect(struct usb_interface *intf)
1711 {
1712 struct hid_device *hid = usb_get_intfdata (intf);
1713
1714 if (!hid)
1715 return;
1716
1717 usb_set_intfdata(intf, NULL);
1718 usb_kill_urb(hid->urbin);
1719 usb_kill_urb(hid->urbout);
1720 usb_kill_urb(hid->urbctrl);
1721
1722 if (hid->claimed & HID_CLAIMED_INPUT)
1723 hidinput_disconnect(hid);
1724 if (hid->claimed & HID_CLAIMED_HIDDEV)
1725 hiddev_disconnect(hid);
1726
1727 usb_free_urb(hid->urbin);
1728 usb_free_urb(hid->urbctrl);
1729 if (hid->urbout)
1730 usb_free_urb(hid->urbout);
1731
1732 hid_free_buffers(hid->dev, hid);
1733 hid_free_device(hid);
1734 }
1735
1736 static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
1737 {
1738 struct hid_device *hid;
1739 char path[64];
1740 int i;
1741 char *c;
1742
1743 dbg("HID probe called for ifnum %d",
1744 intf->altsetting->desc.bInterfaceNumber);
1745
1746 if (!(hid = usb_hid_configure(intf)))
1747 return -EIO;
1748
1749 hid_init_reports(hid);
1750 hid_dump_device(hid);
1751
1752 if (!hidinput_connect(hid))
1753 hid->claimed |= HID_CLAIMED_INPUT;
1754 if (!hiddev_connect(hid))
1755 hid->claimed |= HID_CLAIMED_HIDDEV;
1756
1757 usb_set_intfdata(intf, hid);
1758
1759 if (!hid->claimed) {
1760 printk ("HID device not claimed by input or hiddev\n");
1761 hid_disconnect(intf);
1762 return -EIO;
1763 }
1764
1765 printk(KERN_INFO);
1766
1767 if (hid->claimed & HID_CLAIMED_INPUT)
1768 printk("input");
1769 if (hid->claimed == (HID_CLAIMED_INPUT | HID_CLAIMED_HIDDEV))
1770 printk(",");
1771 if (hid->claimed & HID_CLAIMED_HIDDEV)
1772 printk("hiddev%d", hid->minor);
1773
1774 c = "Device";
1775 for (i = 0; i < hid->maxcollection; i++) {
1776 if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
1777 (hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1778 (hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
1779 c = hid_types[hid->collection[i].usage & 0xffff];
1780 break;
1781 }
1782 }
1783
1784 usb_make_path(interface_to_usbdev(intf), path, 63);
1785
1786 printk(": USB HID v%x.%02x %s [%s] on %s\n",
1787 hid->version >> 8, hid->version & 0xff, c, hid->name, path);
1788
1789 return 0;
1790 }
1791
1792 static int hid_suspend(struct usb_interface *intf, pm_message_t message)
1793 {
1794 struct hid_device *hid = usb_get_intfdata (intf);
1795
1796 usb_kill_urb(hid->urbin);
1797 intf->dev.power.power_state = PMSG_SUSPEND;
1798 dev_dbg(&intf->dev, "suspend\n");
1799 return 0;
1800 }
1801
1802 static int hid_resume(struct usb_interface *intf)
1803 {
1804 struct hid_device *hid = usb_get_intfdata (intf);
1805 int status;
1806
1807 intf->dev.power.power_state = PMSG_ON;
1808 if (hid->open)
1809 status = usb_submit_urb(hid->urbin, GFP_NOIO);
1810 else
1811 status = 0;
1812 dev_dbg(&intf->dev, "resume status %d\n", status);
1813 return status;
1814 }
1815
1816 static struct usb_device_id hid_usb_ids [] = {
1817 { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1818 .bInterfaceClass = USB_INTERFACE_CLASS_HID },
1819 { } /* Terminating entry */
1820 };
1821
1822 MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1823
1824 static struct usb_driver hid_driver = {
1825 .owner = THIS_MODULE,
1826 .name = "usbhid",
1827 .probe = hid_probe,
1828 .disconnect = hid_disconnect,
1829 .suspend = hid_suspend,
1830 .resume = hid_resume,
1831 .id_table = hid_usb_ids,
1832 };
1833
1834 static int __init hid_init(void)
1835 {
1836 int retval;
1837 retval = hiddev_init();
1838 if (retval)
1839 goto hiddev_init_fail;
1840 retval = usb_register(&hid_driver);
1841 if (retval)
1842 goto usb_register_fail;
1843 info(DRIVER_VERSION ":" DRIVER_DESC);
1844
1845 return 0;
1846 usb_register_fail:
1847 hiddev_exit();
1848 hiddev_init_fail:
1849 return retval;
1850 }
1851
1852 static void __exit hid_exit(void)
1853 {
1854 usb_deregister(&hid_driver);
1855 hiddev_exit();
1856 }
1857
1858 module_init(hid_init);
1859 module_exit(hid_exit);
1860
1861 MODULE_AUTHOR(DRIVER_AUTHOR);
1862 MODULE_DESCRIPTION(DRIVER_DESC);
1863 MODULE_LICENSE(DRIVER_LICENSE);
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