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initial commit with v2.6.9
[linux-2.6.9-moxart.git] / drivers / usb / input / hid-core.c
blob35baacd7706dd24a6fa1608ef6e15ba912365e03
1 /*
2 * USB HID support for Linux
3 *
4 * Copyright (c) 1999 Andreas Gal
5 * Copyright (c) 2000-2001 Vojtech Pavlik <vojtech@suse.cz>
6 */
7
8 /*
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
12 * any later version.
13 */
14
15 #include <linux/module.h>
16 #include <linux/slab.h>
17 #include <linux/init.h>
18 #include <linux/kernel.h>
19 #include <linux/sched.h>
20 #include <linux/list.h>
21 #include <linux/mm.h>
22 #include <linux/smp_lock.h>
23 #include <linux/spinlock.h>
24 #include <asm/unaligned.h>
25 #include <asm/byteorder.h>
26 #include <linux/input.h>
27
28 #undef DEBUG
29 #undef DEBUG_DATA
30
31 #include <linux/usb.h>
32
33 #include "hid.h"
34 #include <linux/hiddev.h>
35
36 /*
37 * Version Information
38 */
39
40 #define DRIVER_VERSION "v2.0"
41 #define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik"
42 #define DRIVER_DESC "USB HID core driver"
43 #define DRIVER_LICENSE "GPL"
44
45 static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
46 "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
47
48 /*
49 * Register a new report for a device.
50 */
51
52 static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
53 {
54 struct hid_report_enum *report_enum = device->report_enum + type;
55 struct hid_report *report;
56
57 if (report_enum->report_id_hash[id])
58 return report_enum->report_id_hash[id];
59
60 if (!(report = kmalloc(sizeof(struct hid_report), GFP_KERNEL)))
61 return NULL;
62 memset(report, 0, sizeof(struct hid_report));
63
64 if (id != 0)
65 report_enum->numbered = 1;
66
67 report->id = id;
68 report->type = type;
69 report->size = 0;
70 report->device = device;
71 report_enum->report_id_hash[id] = report;
72
73 list_add_tail(&report->list, &report_enum->report_list);
74
75 return report;
76 }
77
78 /*
79 * Register a new field for this report.
80 */
81
82 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
83 {
84 struct hid_field *field;
85
86 if (report->maxfield == HID_MAX_FIELDS) {
87 dbg("too many fields in report");
88 return NULL;
89 }
90
91 if (!(field = kmalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
92 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
93
94 memset(field, 0, sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
95 + values * sizeof(unsigned));
96
97 report->field[report->maxfield++] = field;
98 field->usage = (struct hid_usage *)(field + 1);
99 field->value = (unsigned *)(field->usage + usages);
100 field->report = report;
101
102 return field;
103 }
104
105 /*
106 * Open a collection. The type/usage is pushed on the stack.
107 */
108
109 static int open_collection(struct hid_parser *parser, unsigned type)
110 {
111 struct hid_collection *collection;
112 unsigned usage;
113
114 usage = parser->local.usage[0];
115
116 if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
117 dbg("collection stack overflow");
118 return -1;
119 }
120
121 if (parser->device->maxcollection == parser->device->collection_size) {
122 collection = kmalloc(sizeof(struct hid_collection) *
123 parser->device->collection_size * 2,
124 GFP_KERNEL);
125 if (collection == NULL) {
126 dbg("failed to reallocate collection array");
127 return -1;
128 }
129 memcpy(collection, parser->device->collection,
130 sizeof(struct hid_collection) *
131 parser->device->collection_size);
132 memset(collection + parser->device->collection_size, 0,
133 sizeof(struct hid_collection) *
134 parser->device->collection_size);
135 kfree(parser->device->collection);
136 parser->device->collection = collection;
137 parser->device->collection_size *= 2;
138 }
139
140 parser->collection_stack[parser->collection_stack_ptr++] =
141 parser->device->maxcollection;
142
143 collection = parser->device->collection +
144 parser->device->maxcollection++;
145 collection->type = type;
146 collection->usage = usage;
147 collection->level = parser->collection_stack_ptr - 1;
148
149 if (type == HID_COLLECTION_APPLICATION)
150 parser->device->maxapplication++;
151
152 return 0;
153 }
154
155 /*
156 * Close a collection.
157 */
158
159 static int close_collection(struct hid_parser *parser)
160 {
161 if (!parser->collection_stack_ptr) {
162 dbg("collection stack underflow");
163 return -1;
164 }
165 parser->collection_stack_ptr--;
166 return 0;
167 }
168
169 /*
170 * Climb up the stack, search for the specified collection type
171 * and return the usage.
172 */
173
174 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
175 {
176 int n;
177 for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
178 if (parser->device->collection[parser->collection_stack[n]].type == type)
179 return parser->device->collection[parser->collection_stack[n]].usage;
180 return 0; /* we know nothing about this usage type */
181 }
182
183 /*
184 * Add a usage to the temporary parser table.
185 */
186
187 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
188 {
189 if (parser->local.usage_index >= HID_MAX_USAGES) {
190 dbg("usage index exceeded");
191 return -1;
192 }
193 parser->local.usage[parser->local.usage_index] = usage;
194 parser->local.collection_index[parser->local.usage_index] =
195 parser->collection_stack_ptr ?
196 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
197 parser->local.usage_index++;
198 return 0;
199 }
200
201 /*
202 * Register a new field for this report.
203 */
204
205 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
206 {
207 struct hid_report *report;
208 struct hid_field *field;
209 int usages;
210 unsigned offset;
211 int i;
212
213 if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
214 dbg("hid_register_report failed");
215 return -1;
216 }
217
218 if (parser->global.logical_maximum < parser->global.logical_minimum) {
219 dbg("logical range invalid %d %d", parser->global.logical_minimum, parser->global.logical_maximum);
220 return -1;
221 }
222
223 if (!(usages = max_t(int, parser->local.usage_index, parser->global.report_count)))
224 return 0; /* Ignore padding fields */
225
226 offset = report->size;
227 report->size += parser->global.report_size * parser->global.report_count;
228
229 if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
230 return 0;
231
232 field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
233 field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
234 field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
235
236 for (i = 0; i < usages; i++) {
237 int j = i;
238 /* Duplicate the last usage we parsed if we have excess values */
239 if (i >= parser->local.usage_index)
240 j = parser->local.usage_index - 1;
241 field->usage[i].hid = parser->local.usage[j];
242 field->usage[i].collection_index =
243 parser->local.collection_index[j];
244 }
245
246 field->maxusage = usages;
247 field->flags = flags;
248 field->report_offset = offset;
249 field->report_type = report_type;
250 field->report_size = parser->global.report_size;
251 field->report_count = parser->global.report_count;
252 field->logical_minimum = parser->global.logical_minimum;
253 field->logical_maximum = parser->global.logical_maximum;
254 field->physical_minimum = parser->global.physical_minimum;
255 field->physical_maximum = parser->global.physical_maximum;
256 field->unit_exponent = parser->global.unit_exponent;
257 field->unit = parser->global.unit;
258
259 return 0;
260 }
261
262 /*
263 * Read data value from item.
264 */
265
266 static __inline__ __u32 item_udata(struct hid_item *item)
267 {
268 switch (item->size) {
269 case 1: return item->data.u8;
270 case 2: return item->data.u16;
271 case 4: return item->data.u32;
272 }
273 return 0;
274 }
275
276 static __inline__ __s32 item_sdata(struct hid_item *item)
277 {
278 switch (item->size) {
279 case 1: return item->data.s8;
280 case 2: return item->data.s16;
281 case 4: return item->data.s32;
282 }
283 return 0;
284 }
285
286 /*
287 * Process a global item.
288 */
289
290 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
291 {
292 switch (item->tag) {
293
294 case HID_GLOBAL_ITEM_TAG_PUSH:
295
296 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
297 dbg("global enviroment stack overflow");
298 return -1;
299 }
300
301 memcpy(parser->global_stack + parser->global_stack_ptr++,
302 &parser->global, sizeof(struct hid_global));
303 return 0;
304
305 case HID_GLOBAL_ITEM_TAG_POP:
306
307 if (!parser->global_stack_ptr) {
308 dbg("global enviroment stack underflow");
309 return -1;
310 }
311
312 memcpy(&parser->global, parser->global_stack + --parser->global_stack_ptr,
313 sizeof(struct hid_global));
314 return 0;
315
316 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
317 parser->global.usage_page = item_udata(item);
318 return 0;
319
320 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
321 parser->global.logical_minimum = item_sdata(item);
322 return 0;
323
324 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
325 if (parser->global.logical_minimum < 0)
326 parser->global.logical_maximum = item_sdata(item);
327 else
328 parser->global.logical_maximum = item_udata(item);
329 return 0;
330
331 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
332 parser->global.physical_minimum = item_sdata(item);
333 return 0;
334
335 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
336 if (parser->global.physical_minimum < 0)
337 parser->global.physical_maximum = item_sdata(item);
338 else
339 parser->global.physical_maximum = item_udata(item);
340 return 0;
341
342 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
343 parser->global.unit_exponent = item_sdata(item);
344 return 0;
345
346 case HID_GLOBAL_ITEM_TAG_UNIT:
347 parser->global.unit = item_udata(item);
348 return 0;
349
350 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
351 if ((parser->global.report_size = item_udata(item)) > 32) {
352 dbg("invalid report_size %d", parser->global.report_size);
353 return -1;
354 }
355 return 0;
356
357 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
358 if ((parser->global.report_count = item_udata(item)) > HID_MAX_USAGES) {
359 dbg("invalid report_count %d", parser->global.report_count);
360 return -1;
361 }
362 return 0;
363
364 case HID_GLOBAL_ITEM_TAG_REPORT_ID:
365 if ((parser->global.report_id = item_udata(item)) == 0) {
366 dbg("report_id 0 is invalid");
367 return -1;
368 }
369 return 0;
370
371 default:
372 dbg("unknown global tag 0x%x", item->tag);
373 return -1;
374 }
375 }
376
377 /*
378 * Process a local item.
379 */
380
381 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
382 {
383 __u32 data;
384 unsigned n;
385
386 if (item->size == 0) {
387 dbg("item data expected for local item");
388 return -1;
389 }
390
391 data = item_udata(item);
392
393 switch (item->tag) {
394
395 case HID_LOCAL_ITEM_TAG_DELIMITER:
396
397 if (data) {
398 /*
399 * We treat items before the first delimiter
400 * as global to all usage sets (branch 0).
401 * In the moment we process only these global
402 * items and the first delimiter set.
403 */
404 if (parser->local.delimiter_depth != 0) {
405 dbg("nested delimiters");
406 return -1;
407 }
408 parser->local.delimiter_depth++;
409 parser->local.delimiter_branch++;
410 } else {
411 if (parser->local.delimiter_depth < 1) {
412 dbg("bogus close delimiter");
413 return -1;
414 }
415 parser->local.delimiter_depth--;
416 }
417 return 1;
418
419 case HID_LOCAL_ITEM_TAG_USAGE:
420
421 if (parser->local.delimiter_branch > 1) {
422 dbg("alternative usage ignored");
423 return 0;
424 }
425
426 if (item->size <= 2)
427 data = (parser->global.usage_page << 16) + data;
428
429 return hid_add_usage(parser, data);
430
431 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
432
433 if (parser->local.delimiter_branch > 1) {
434 dbg("alternative usage ignored");
435 return 0;
436 }
437
438 if (item->size <= 2)
439 data = (parser->global.usage_page << 16) + data;
440
441 parser->local.usage_minimum = data;
442 return 0;
443
444 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
445
446 if (parser->local.delimiter_branch > 1) {
447 dbg("alternative usage ignored");
448 return 0;
449 }
450
451 if (item->size <= 2)
452 data = (parser->global.usage_page << 16) + data;
453
454 for (n = parser->local.usage_minimum; n <= data; n++)
455 if (hid_add_usage(parser, n)) {
456 dbg("hid_add_usage failed\n");
457 return -1;
458 }
459 return 0;
460
461 default:
462
463 dbg("unknown local item tag 0x%x", item->tag);
464 return 0;
465 }
466 return 0;
467 }
468
469 /*
470 * Process a main item.
471 */
472
473 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
474 {
475 __u32 data;
476 int ret;
477
478 data = item_udata(item);
479
480 switch (item->tag) {
481 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
482 ret = open_collection(parser, data & 0xff);
483 break;
484 case HID_MAIN_ITEM_TAG_END_COLLECTION:
485 ret = close_collection(parser);
486 break;
487 case HID_MAIN_ITEM_TAG_INPUT:
488 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
489 break;
490 case HID_MAIN_ITEM_TAG_OUTPUT:
491 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
492 break;
493 case HID_MAIN_ITEM_TAG_FEATURE:
494 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
495 break;
496 default:
497 dbg("unknown main item tag 0x%x", item->tag);
498 ret = 0;
499 }
500
501 memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */
502
503 return ret;
504 }
505
506 /*
507 * Process a reserved item.
508 */
509
510 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
511 {
512 dbg("reserved item type, tag 0x%x", item->tag);
513 return 0;
514 }
515
516 /*
517 * Free a report and all registered fields. The field->usage and
518 * field->value table's are allocated behind the field, so we need
519 * only to free(field) itself.
520 */
521
522 static void hid_free_report(struct hid_report *report)
523 {
524 unsigned n;
525
526 for (n = 0; n < report->maxfield; n++)
527 kfree(report->field[n]);
528 kfree(report);
529 }
530
531 /*
532 * Free a device structure, all reports, and all fields.
533 */
534
535 static void hid_free_device(struct hid_device *device)
536 {
537 unsigned i,j;
538
539 hid_ff_exit(device);
540
541 for (i = 0; i < HID_REPORT_TYPES; i++) {
542 struct hid_report_enum *report_enum = device->report_enum + i;
543
544 for (j = 0; j < 256; j++) {
545 struct hid_report *report = report_enum->report_id_hash[j];
546 if (report)
547 hid_free_report(report);
548 }
549 }
550
551 if (device->rdesc)
552 kfree(device->rdesc);
553 kfree(device);
554 }
555
556 /*
557 * Fetch a report description item from the data stream. We support long
558 * items, though they are not used yet.
559 */
560
561 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
562 {
563 u8 b;
564
565 if ((end - start) <= 0)
566 return NULL;
567
568 b = *start++;
569
570 item->type = (b >> 2) & 3;
571 item->tag = (b >> 4) & 15;
572
573 if (item->tag == HID_ITEM_TAG_LONG) {
574
575 item->format = HID_ITEM_FORMAT_LONG;
576
577 if ((end - start) < 2)
578 return NULL;
579
580 item->size = *start++;
581 item->tag = *start++;
582
583 if ((end - start) < item->size)
584 return NULL;
585
586 item->data.longdata = start;
587 start += item->size;
588 return start;
589 }
590
591 item->format = HID_ITEM_FORMAT_SHORT;
592 item->size = b & 3;
593
594 switch (item->size) {
595
596 case 0:
597 return start;
598
599 case 1:
600 if ((end - start) < 1)
601 return NULL;
602 item->data.u8 = *start++;
603 return start;
604
605 case 2:
606 if ((end - start) < 2)
607 return NULL;
608 item->data.u16 = le16_to_cpu(get_unaligned((__le16*)start));
609 start = (__u8 *)((__le16 *)start + 1);
610 return start;
611
612 case 3:
613 item->size++;
614 if ((end - start) < 4)
615 return NULL;
616 item->data.u32 = le32_to_cpu(get_unaligned((__le32*)start));
617 start = (__u8 *)((__le32 *)start + 1);
618 return start;
619 }
620
621 return NULL;
622 }
623
624 /*
625 * Parse a report description into a hid_device structure. Reports are
626 * enumerated, fields are attached to these reports.
627 */
628
629 static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
630 {
631 struct hid_device *device;
632 struct hid_parser *parser;
633 struct hid_item item;
634 __u8 *end;
635 unsigned i;
636 static int (*dispatch_type[])(struct hid_parser *parser,
637 struct hid_item *item) = {
638 hid_parser_main,
639 hid_parser_global,
640 hid_parser_local,
641 hid_parser_reserved
642 };
643
644 if (!(device = kmalloc(sizeof(struct hid_device), GFP_KERNEL)))
645 return NULL;
646 memset(device, 0, sizeof(struct hid_device));
647
648 if (!(device->collection =kmalloc(sizeof(struct hid_collection) *
649 HID_DEFAULT_NUM_COLLECTIONS, GFP_KERNEL))) {
650 kfree(device);
651 return NULL;
652 }
653 memset(device->collection, 0, sizeof(struct hid_collection) *
654 HID_DEFAULT_NUM_COLLECTIONS);
655 device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
656
657 for (i = 0; i < HID_REPORT_TYPES; i++)
658 INIT_LIST_HEAD(&device->report_enum[i].report_list);
659
660 if (!(device->rdesc = (__u8 *)kmalloc(size, GFP_KERNEL))) {
661 kfree(device->collection);
662 kfree(device);
663 return NULL;
664 }
665 memcpy(device->rdesc, start, size);
666 device->rsize = size;
667
668 if (!(parser = kmalloc(sizeof(struct hid_parser), GFP_KERNEL))) {
669 kfree(device->rdesc);
670 kfree(device->collection);
671 kfree(device);
672 return NULL;
673 }
674 memset(parser, 0, sizeof(struct hid_parser));
675 parser->device = device;
676
677 end = start + size;
678 while ((start = fetch_item(start, end, &item)) != 0) {
679
680 if (item.format != HID_ITEM_FORMAT_SHORT) {
681 dbg("unexpected long global item");
682 kfree(device->collection);
683 hid_free_device(device);
684 kfree(parser);
685 return NULL;
686 }
687
688 if (dispatch_type[item.type](parser, &item)) {
689 dbg("item %u %u %u %u parsing failed\n",
690 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
691 kfree(device->collection);
692 hid_free_device(device);
693 kfree(parser);
694 return NULL;
695 }
696
697 if (start == end) {
698 if (parser->collection_stack_ptr) {
699 dbg("unbalanced collection at end of report description");
700 kfree(device->collection);
701 hid_free_device(device);
702 kfree(parser);
703 return NULL;
704 }
705 if (parser->local.delimiter_depth) {
706 dbg("unbalanced delimiter at end of report description");
707 kfree(device->collection);
708 hid_free_device(device);
709 kfree(parser);
710 return NULL;
711 }
712 kfree(parser);
713 return device;
714 }
715 }
716
717 dbg("item fetching failed at offset %d\n", (int)(end - start));
718 kfree(device->collection);
719 hid_free_device(device);
720 kfree(parser);
721 return NULL;
722 }
723
724 /*
725 * Convert a signed n-bit integer to signed 32-bit integer. Common
726 * cases are done through the compiler, the screwed things has to be
727 * done by hand.
728 */
729
730 static __inline__ __s32 snto32(__u32 value, unsigned n)
731 {
732 switch (n) {
733 case 8: return ((__s8)value);
734 case 16: return ((__s16)value);
735 case 32: return ((__s32)value);
736 }
737 return value & (1 << (n - 1)) ? value | (-1 << n) : value;
738 }
739
740 /*
741 * Convert a signed 32-bit integer to a signed n-bit integer.
742 */
743
744 static __inline__ __u32 s32ton(__s32 value, unsigned n)
745 {
746 __s32 a = value >> (n - 1);
747 if (a && a != -1)
748 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
749 return value & ((1 << n) - 1);
750 }
751
752 /*
753 * Extract/implement a data field from/to a report.
754 */
755
756 static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
757 {
758 report += (offset >> 5) << 2; offset &= 31;
759 return (le64_to_cpu(get_unaligned((__le64*)report)) >> offset) & ((1 << n) - 1);
760 }
761
762 static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
763 {
764 report += (offset >> 5) << 2; offset &= 31;
765 put_unaligned((get_unaligned((__le64*)report)
766 & cpu_to_le64(~((((__u64) 1 << n) - 1) << offset)))
767 | cpu_to_le64((__u64)value << offset), (__le64*)report);
768 }
769
770 /*
771 * Search an array for a value.
772 */
773
774 static __inline__ int search(__s32 *array, __s32 value, unsigned n)
775 {
776 while (n--) {
777 if (*array++ == value)
778 return 0;
779 }
780 return -1;
781 }
782
783 static void hid_process_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs)
784 {
785 hid_dump_input(usage, value);
786 if (hid->claimed & HID_CLAIMED_INPUT)
787 hidinput_hid_event(hid, field, usage, value, regs);
788 if (hid->claimed & HID_CLAIMED_HIDDEV)
789 hiddev_hid_event(hid, field, usage, value, regs);
790 }
791
792 /*
793 * Analyse a received field, and fetch the data from it. The field
794 * content is stored for next report processing (we do differential
795 * reporting to the layer).
796 */
797
798 static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, struct pt_regs *regs)
799 {
800 unsigned n;
801 unsigned count = field->report_count;
802 unsigned offset = field->report_offset;
803 unsigned size = field->report_size;
804 __s32 min = field->logical_minimum;
805 __s32 max = field->logical_maximum;
806 __s32 *value;
807
808 value = kmalloc(sizeof(__s32)*count, GFP_ATOMIC);
809 if (!value)
810 return;
811
812 for (n = 0; n < count; n++) {
813
814 value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
815 extract(data, offset + n * size, size);
816
817 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
818 && value[n] >= min && value[n] <= max
819 && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
820 goto exit;
821 }
822
823 for (n = 0; n < count; n++) {
824
825 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
826
827 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
828 if (!value[n])
829 continue;
830 } else {
831 if (value[n] == field->value[n])
832 continue;
833 }
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 return -1;
898 }
899
900 if (hid->claimed & HID_CLAIMED_HIDDEV)
901 hiddev_report_event(hid, report);
902
903 for (n = 0; n < report->maxfield; n++)
904 hid_input_field(hid, report->field[n], data, regs);
905
906 if (hid->claimed & HID_CLAIMED_INPUT)
907 hidinput_report_event(hid, report);
908
909 return 0;
910 }
911
912 /*
913 * Input interrupt completion handler.
914 */
915
916 static void hid_irq_in(struct urb *urb, struct pt_regs *regs)
917 {
918 struct hid_device *hid = urb->context;
919 int status;
920
921 switch (urb->status) {
922 case 0: /* success */
923 hid_input_report(HID_INPUT_REPORT, urb, regs);
924 break;
925 case -ECONNRESET: /* unlink */
926 case -ENOENT:
927 case -ESHUTDOWN:
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 int hid_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1004 {
1005 struct hid_report_enum *report_enum = hid->report_enum + HID_OUTPUT_REPORT;
1006 struct list_head *list = report_enum->report_list.next;
1007 int i, j;
1008
1009 while (list != &report_enum->report_list) {
1010 struct hid_report *report = (struct hid_report *) list;
1011 list = list->next;
1012 for (i = 0; i < report->maxfield; i++) {
1013 *field = report->field[i];
1014 for (j = 0; j < (*field)->maxusage; j++)
1015 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1016 return j;
1017 }
1018 }
1019 return -1;
1020 }
1021
1022 /*
1023 * Find a report with a specified HID usage.
1024 */
1025
1026 int hid_find_report_by_usage(struct hid_device *hid, __u32 wanted_usage, struct hid_report **report, int type)
1027 {
1028 struct hid_report_enum *report_enum = hid->report_enum + type;
1029 struct list_head *list = report_enum->report_list.next;
1030 int i, j;
1031
1032 while (list != &report_enum->report_list) {
1033 *report = (struct hid_report *) list;
1034 list = list->next;
1035 for (i = 0; i < (*report)->maxfield; i++) {
1036 struct hid_field *field = (*report)->field[i];
1037 for (j = 0; j < field->maxusage; j++)
1038 if (field->logical == wanted_usage)
1039 return j;
1040 }
1041 }
1042 return -1;
1043 }
1044
1045 #if 0
1046 static int hid_find_field_in_report(struct hid_report *report, __u32 wanted_usage, struct hid_field **field)
1047 {
1048 int i, j;
1049
1050 for (i = 0; i < report->maxfield; i++) {
1051 *field = report->field[i];
1052 for (j = 0; j < (*field)->maxusage; j++)
1053 if ((*field)->usage[j].hid == wanted_usage)
1054 return j;
1055 }
1056
1057 return -1;
1058 }
1059 #endif
1060
1061 static int hid_submit_out(struct hid_device *hid)
1062 {
1063 struct hid_report *report;
1064
1065 report = hid->out[hid->outtail];
1066
1067 hid_output_report(report, hid->outbuf);
1068 hid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1069 hid->urbout->dev = hid->dev;
1070
1071 dbg("submitting out urb");
1072
1073 if (usb_submit_urb(hid->urbout, GFP_ATOMIC)) {
1074 err("usb_submit_urb(out) failed");
1075 return -1;
1076 }
1077
1078 return 0;
1079 }
1080
1081 static int hid_submit_ctrl(struct hid_device *hid)
1082 {
1083 struct hid_report *report;
1084 unsigned char dir;
1085 int len;
1086
1087 report = hid->ctrl[hid->ctrltail].report;
1088 dir = hid->ctrl[hid->ctrltail].dir;
1089
1090 len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1091 if (dir == USB_DIR_OUT) {
1092 hid_output_report(report, hid->ctrlbuf);
1093 hid->urbctrl->pipe = usb_sndctrlpipe(hid->dev, 0);
1094 hid->urbctrl->transfer_buffer_length = len;
1095 } else {
1096 int maxpacket, padlen;
1097
1098 hid->urbctrl->pipe = usb_rcvctrlpipe(hid->dev, 0);
1099 maxpacket = usb_maxpacket(hid->dev, hid->urbctrl->pipe, 0);
1100 if (maxpacket > 0) {
1101 padlen = (len + maxpacket - 1) / maxpacket;
1102 padlen *= maxpacket;
1103 if (padlen > HID_BUFFER_SIZE)
1104 padlen = HID_BUFFER_SIZE;
1105 } else
1106 padlen = 0;
1107 hid->urbctrl->transfer_buffer_length = padlen;
1108 }
1109 hid->urbctrl->dev = hid->dev;
1110
1111 hid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
1112 hid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
1113 hid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
1114 hid->cr->wIndex = cpu_to_le16(hid->ifnum);
1115 hid->cr->wLength = cpu_to_le16(len);
1116
1117 dbg("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u",
1118 hid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
1119 hid->cr->wValue, hid->cr->wIndex, hid->cr->wLength);
1120
1121 if (usb_submit_urb(hid->urbctrl, GFP_ATOMIC)) {
1122 err("usb_submit_urb(ctrl) failed");
1123 return -1;
1124 }
1125
1126 return 0;
1127 }
1128
1129 /*
1130 * Output interrupt completion handler.
1131 */
1132
1133 static void hid_irq_out(struct urb *urb, struct pt_regs *regs)
1134 {
1135 struct hid_device *hid = urb->context;
1136 unsigned long flags;
1137
1138 switch (urb->status) {
1139 case 0: /* success */
1140 case -ECONNRESET: /* unlink */
1141 case -ENOENT:
1142 case -ESHUTDOWN:
1143 break;
1144 default: /* error */
1145 warn("output irq status %d received", urb->status);
1146 }
1147
1148 spin_lock_irqsave(&hid->outlock, flags);
1149
1150 hid->outtail = (hid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
1151
1152 if (hid->outhead != hid->outtail) {
1153 if (hid_submit_out(hid)) {
1154 clear_bit(HID_OUT_RUNNING, &hid->iofl);;
1155 wake_up(&hid->wait);
1156 }
1157 spin_unlock_irqrestore(&hid->outlock, flags);
1158 return;
1159 }
1160
1161 clear_bit(HID_OUT_RUNNING, &hid->iofl);
1162 spin_unlock_irqrestore(&hid->outlock, flags);
1163 wake_up(&hid->wait);
1164 }
1165
1166 /*
1167 * Control pipe completion handler.
1168 */
1169
1170 static void hid_ctrl(struct urb *urb, struct pt_regs *regs)
1171 {
1172 struct hid_device *hid = urb->context;
1173 unsigned long flags;
1174
1175 spin_lock_irqsave(&hid->ctrllock, flags);
1176
1177 switch (urb->status) {
1178 case 0: /* success */
1179 if (hid->ctrl[hid->ctrltail].dir == USB_DIR_IN)
1180 hid_input_report(hid->ctrl[hid->ctrltail].report->type, urb, regs);
1181 case -ECONNRESET: /* unlink */
1182 case -ENOENT:
1183 case -ESHUTDOWN:
1184 case -EPIPE: /* report not available */
1185 break;
1186 default: /* error */
1187 warn("ctrl urb status %d received", urb->status);
1188 }
1189
1190 hid->ctrltail = (hid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
1191
1192 if (hid->ctrlhead != hid->ctrltail) {
1193 if (hid_submit_ctrl(hid)) {
1194 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1195 wake_up(&hid->wait);
1196 }
1197 spin_unlock_irqrestore(&hid->ctrllock, flags);
1198 return;
1199 }
1200
1201 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1202 spin_unlock_irqrestore(&hid->ctrllock, flags);
1203 wake_up(&hid->wait);
1204 }
1205
1206 void hid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
1207 {
1208 int head;
1209 unsigned long flags;
1210
1211 if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
1212 return;
1213
1214 if (hid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
1215
1216 spin_lock_irqsave(&hid->outlock, flags);
1217
1218 if ((head = (hid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == hid->outtail) {
1219 spin_unlock_irqrestore(&hid->outlock, flags);
1220 warn("output queue full");
1221 return;
1222 }
1223
1224 hid->out[hid->outhead] = report;
1225 hid->outhead = head;
1226
1227 if (!test_and_set_bit(HID_OUT_RUNNING, &hid->iofl))
1228 if (hid_submit_out(hid))
1229 clear_bit(HID_OUT_RUNNING, &hid->iofl);
1230
1231 spin_unlock_irqrestore(&hid->outlock, flags);
1232 return;
1233 }
1234
1235 spin_lock_irqsave(&hid->ctrllock, flags);
1236
1237 if ((head = (hid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == hid->ctrltail) {
1238 spin_unlock_irqrestore(&hid->ctrllock, flags);
1239 warn("control queue full");
1240 return;
1241 }
1242
1243 hid->ctrl[hid->ctrlhead].report = report;
1244 hid->ctrl[hid->ctrlhead].dir = dir;
1245 hid->ctrlhead = head;
1246
1247 if (!test_and_set_bit(HID_CTRL_RUNNING, &hid->iofl))
1248 if (hid_submit_ctrl(hid))
1249 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1250
1251 spin_unlock_irqrestore(&hid->ctrllock, flags);
1252 }
1253
1254 int hid_wait_io(struct hid_device *hid)
1255 {
1256 DECLARE_WAITQUEUE(wait, current);
1257 int timeout = 10*HZ;
1258
1259 set_current_state(TASK_UNINTERRUPTIBLE);
1260 add_wait_queue(&hid->wait, &wait);
1261
1262 while (timeout && (test_bit(HID_CTRL_RUNNING, &hid->iofl) ||
1263 test_bit(HID_OUT_RUNNING, &hid->iofl)))
1264 timeout = schedule_timeout(timeout);
1265
1266 set_current_state(TASK_RUNNING);
1267 remove_wait_queue(&hid->wait, &wait);
1268
1269 if (!timeout) {
1270 dbg("timeout waiting for ctrl or out queue to clear");
1271 return -1;
1272 }
1273
1274 return 0;
1275 }
1276
1277 static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
1278 unsigned char type, void *buf, int size)
1279 {
1280 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
1281 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
1282 (type << 8), ifnum, buf, size, HZ * USB_CTRL_GET_TIMEOUT);
1283 }
1284
1285 int hid_open(struct hid_device *hid)
1286 {
1287 if (hid->open++)
1288 return 0;
1289
1290 hid->urbin->dev = hid->dev;
1291
1292 if (usb_submit_urb(hid->urbin, GFP_KERNEL))
1293 return -EIO;
1294
1295 return 0;
1296 }
1297
1298 void hid_close(struct hid_device *hid)
1299 {
1300 if (!--hid->open)
1301 usb_kill_urb(hid->urbin);
1302 }
1303
1304 /*
1305 * Initialize all reports
1306 */
1307
1308 void hid_init_reports(struct hid_device *hid)
1309 {
1310 struct hid_report_enum *report_enum;
1311 struct hid_report *report;
1312 struct list_head *list;
1313 int err, ret;
1314
1315 /*
1316 * The Set_Idle request is supposed to affect only the
1317 * "Interrupt In" pipe. Unfortunately, buggy devices such as
1318 * the BTC keyboard (ID 046e:5303) the request also affects
1319 * Get_Report requests on the control pipe. In the worst
1320 * case, if the device was put on idle for an indefinite
1321 * amount of time (as we do below) and there are no input
1322 * events to report, the Get_Report requests will just hang
1323 * until we get a USB timeout. To avoid this, we temporarily
1324 * establish a minimal idle time of 1ms. This shouldn't hurt
1325 * bugfree devices and will cause a worst-case extra delay of
1326 * 1ms for buggy ones.
1327 */
1328 usb_control_msg(hid->dev, usb_sndctrlpipe(hid->dev, 0),
1329 HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (1 << 8),
1330 hid->ifnum, NULL, 0, HZ * USB_CTRL_SET_TIMEOUT);
1331
1332 report_enum = hid->report_enum + HID_INPUT_REPORT;
1333 list = report_enum->report_list.next;
1334 while (list != &report_enum->report_list) {
1335 report = (struct hid_report *) list;
1336 hid_submit_report(hid, report, USB_DIR_IN);
1337 list = list->next;
1338 }
1339
1340 report_enum = hid->report_enum + HID_FEATURE_REPORT;
1341 list = report_enum->report_list.next;
1342 while (list != &report_enum->report_list) {
1343 report = (struct hid_report *) list;
1344 hid_submit_report(hid, report, USB_DIR_IN);
1345 list = list->next;
1346 }
1347
1348 err = 0;
1349 ret = hid_wait_io(hid);
1350 while (ret) {
1351 err |= ret;
1352 if (test_bit(HID_CTRL_RUNNING, &hid->iofl))
1353 usb_unlink_urb(hid->urbctrl);
1354 if (test_bit(HID_OUT_RUNNING, &hid->iofl))
1355 usb_unlink_urb(hid->urbout);
1356 ret = hid_wait_io(hid);
1357 }
1358
1359 if (err)
1360 warn("timeout initializing reports\n");
1361
1362 report_enum = hid->report_enum + HID_INPUT_REPORT;
1363 list = report_enum->report_list.next;
1364 while (list != &report_enum->report_list) {
1365 report = (struct hid_report *) list;
1366 usb_control_msg(hid->dev, usb_sndctrlpipe(hid->dev, 0),
1367 HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, report->id,
1368 hid->ifnum, NULL, 0, HZ * USB_CTRL_SET_TIMEOUT);
1369 list = list->next;
1370 }
1371 }
1372
1373 #define USB_VENDOR_ID_WACOM 0x056a
1374 #define USB_DEVICE_ID_WACOM_PENPARTNER 0x0000
1375 #define USB_DEVICE_ID_WACOM_GRAPHIRE 0x0010
1376 #define USB_DEVICE_ID_WACOM_INTUOS 0x0020
1377 #define USB_DEVICE_ID_WACOM_PL 0x0030
1378 #define USB_DEVICE_ID_WACOM_INTUOS2 0x0040
1379 #define USB_DEVICE_ID_WACOM_VOLITO 0x0060
1380 #define USB_DEVICE_ID_WACOM_PTU 0x0003
1381
1382 #define USB_VENDOR_ID_KBGEAR 0x084e
1383 #define USB_DEVICE_ID_KBGEAR_JAMSTUDIO 0x1001
1384
1385 #define USB_VENDOR_ID_AIPTEK 0x08ca
1386 #define USB_DEVICE_ID_AIPTEK_01 0x0001
1387 #define USB_DEVICE_ID_AIPTEK_10 0x0010
1388 #define USB_DEVICE_ID_AIPTEK_20 0x0020
1389 #define USB_DEVICE_ID_AIPTEK_21 0x0021
1390 #define USB_DEVICE_ID_AIPTEK_22 0x0022
1391 #define USB_DEVICE_ID_AIPTEK_23 0x0023
1392 #define USB_DEVICE_ID_AIPTEK_24 0x0024
1393
1394 #define USB_VENDOR_ID_GRIFFIN 0x077d
1395 #define USB_DEVICE_ID_POWERMATE 0x0410
1396 #define USB_DEVICE_ID_SOUNDKNOB 0x04AA
1397
1398 #define USB_VENDOR_ID_ATEN 0x0557
1399 #define USB_DEVICE_ID_ATEN_UC100KM 0x2004
1400 #define USB_DEVICE_ID_ATEN_CS124U 0x2202
1401 #define USB_DEVICE_ID_ATEN_2PORTKVM 0x2204
1402 #define USB_DEVICE_ID_ATEN_4PORTKVM 0x2205
1403 #define USB_DEVICE_ID_ATEN_4PORTKVMC 0x2208
1404
1405 #define USB_VENDOR_ID_TOPMAX 0x0663
1406 #define USB_DEVICE_ID_TOPMAX_COBRAPAD 0x0103
1407
1408 #define USB_VENDOR_ID_HAPP 0x078b
1409 #define USB_DEVICE_ID_UGCI_DRIVING 0x0010
1410 #define USB_DEVICE_ID_UGCI_FLYING 0x0020
1411 #define USB_DEVICE_ID_UGCI_FIGHTING 0x0030
1412
1413 #define USB_VENDOR_ID_MGE 0x0463
1414 #define USB_DEVICE_ID_MGE_UPS 0xffff
1415 #define USB_DEVICE_ID_MGE_UPS1 0x0001
1416
1417 #define USB_VENDOR_ID_ONTRAK 0x0a07
1418 #define USB_DEVICE_ID_ONTRAK_ADU100 0x0064
1419
1420 #define USB_VENDOR_ID_TANGTOP 0x0d3d
1421 #define USB_DEVICE_ID_TANGTOP_USBPS2 0x0001
1422
1423 #define USB_VENDOR_ID_ESSENTIAL_REALITY 0x0d7f
1424 #define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100
1425
1426 #define USB_VENDOR_ID_A4TECH 0x09DA
1427 #define USB_DEVICE_ID_A4TECH_WCP32PU 0x0006
1428
1429 #define USB_VENDOR_ID_CYPRESS 0x04b4
1430 #define USB_DEVICE_ID_CYPRESS_MOUSE 0x0001
1431
1432 #define USB_VENDOR_ID_BERKSHIRE 0x0c98
1433 #define USB_DEVICE_ID_BERKSHIRE_PCWD 0x1140
1434
1435 #define USB_VENDOR_ID_ALPS 0x0433
1436 #define USB_DEVICE_ID_IBM_GAMEPAD 0x1101
1437
1438 #define USB_VENDOR_ID_SAITEK 0x06a3
1439 #define USB_DEVICE_ID_SAITEK_RUMBLEPAD 0xff17
1440
1441 #define USB_VENDOR_ID_NEC 0x073e
1442 #define USB_DEVICE_ID_NEC_USB_GAME_PAD 0x0301
1443
1444 #define USB_VENDOR_ID_CHIC 0x05fe
1445 #define USB_DEVICE_ID_CHIC_GAMEPAD 0x0014
1446
1447 #define USB_VENDOR_ID_GLAB 0x06c2
1448 #define USB_DEVICE_ID_4_PHIDGETSERVO_30 0x0038
1449 #define USB_DEVICE_ID_1_PHIDGETSERVO_30 0x0039
1450 #define USB_DEVICE_ID_8_8_8_IF_KIT 0x0045
1451 #define USB_DEVICE_ID_0_0_4_IF_KIT 0x0040
1452 #define USB_DEVICE_ID_0_8_8_IF_KIT 0x0053
1453
1454 #define USB_VENDOR_ID_WISEGROUP 0x0925
1455 #define USB_DEVICE_ID_1_PHIDGETSERVO_20 0x8101
1456 #define USB_DEVICE_ID_4_PHIDGETSERVO_20 0x8104
1457
1458 #define USB_VENDOR_ID_CODEMERCS 0x07c0
1459 #define USB_DEVICE_ID_CODEMERCS_IOW40 0x1500
1460 #define USB_DEVICE_ID_CODEMERCS_IOW24 0x1501
1461
1462
1463 static struct hid_blacklist {
1464 __u16 idVendor;
1465 __u16 idProduct;
1466 unsigned quirks;
1467 } hid_blacklist[] = {
1468
1469 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01, HID_QUIRK_IGNORE },
1470 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10, HID_QUIRK_IGNORE },
1471 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20, HID_QUIRK_IGNORE },
1472 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21, HID_QUIRK_IGNORE },
1473 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22, HID_QUIRK_IGNORE },
1474 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23, HID_QUIRK_IGNORE },
1475 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24, HID_QUIRK_IGNORE },
1476 { USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD, HID_QUIRK_IGNORE },
1477 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW40, HID_QUIRK_IGNORE },
1478 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW24, HID_QUIRK_IGNORE },
1479 { USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5, HID_QUIRK_IGNORE },
1480 { USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO, HID_QUIRK_IGNORE },
1481 { USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE, HID_QUIRK_IGNORE },
1482 { USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB, HID_QUIRK_IGNORE },
1483 { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_IGNORE },
1484 { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1, HID_QUIRK_IGNORE },
1485 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100, HID_QUIRK_IGNORE },
1486 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100, HID_QUIRK_IGNORE },
1487 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200, HID_QUIRK_IGNORE },
1488 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300, HID_QUIRK_IGNORE },
1489 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400, HID_QUIRK_IGNORE },
1490 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500, HID_QUIRK_IGNORE },
1491 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PENPARTNER, HID_QUIRK_IGNORE },
1492 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE, HID_QUIRK_IGNORE },
1493 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 1, HID_QUIRK_IGNORE },
1494 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 2, HID_QUIRK_IGNORE },
1495 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 3, HID_QUIRK_IGNORE },
1496 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 4, HID_QUIRK_IGNORE },
1497 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS, HID_QUIRK_IGNORE },
1498 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 1, HID_QUIRK_IGNORE },
1499 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 2, HID_QUIRK_IGNORE },
1500 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 3, HID_QUIRK_IGNORE },
1501 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 4, HID_QUIRK_IGNORE },
1502 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL, HID_QUIRK_IGNORE },
1503 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 1, HID_QUIRK_IGNORE },
1504 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 2, HID_QUIRK_IGNORE },
1505 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 3, HID_QUIRK_IGNORE },
1506 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 4, HID_QUIRK_IGNORE },
1507 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 5, HID_QUIRK_IGNORE },
1508 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 1, HID_QUIRK_IGNORE },
1509 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 2, HID_QUIRK_IGNORE },
1510 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 3, HID_QUIRK_IGNORE },
1511 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 4, HID_QUIRK_IGNORE },
1512 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 5, HID_QUIRK_IGNORE },
1513 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 7, HID_QUIRK_IGNORE },
1514 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO, HID_QUIRK_IGNORE },
1515 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PTU, HID_QUIRK_IGNORE },
1516
1517 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1518 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1519 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT, HID_QUIRK_IGNORE },
1520 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT, HID_QUIRK_IGNORE },
1521 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT, HID_QUIRK_IGNORE },
1522
1523 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1524 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1525
1526 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
1527 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
1528 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
1529 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
1530 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
1531 { USB_VENDOR_ID_TANGTOP, USB_DEVICE_ID_TANGTOP_USBPS2, HID_QUIRK_NOGET },
1532
1533 { USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU, HID_QUIRK_2WHEEL_MOUSE_HACK_BACK },
1534 { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE, HID_QUIRK_2WHEEL_MOUSE_HACK_EXTRA },
1535
1536 { USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
1537 { USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD },
1538 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1539 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1540 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1541 { USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD },
1542 { USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
1543 { USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
1544
1545 { 0, 0 }
1546 };
1547
1548 static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
1549 {
1550 if (!(hid->inbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->inbuf_dma)))
1551 return -1;
1552 if (!(hid->outbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->outbuf_dma)))
1553 return -1;
1554 if (!(hid->cr = usb_buffer_alloc(dev, sizeof(*(hid->cr)), SLAB_ATOMIC, &hid->cr_dma)))
1555 return -1;
1556 if (!(hid->ctrlbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->ctrlbuf_dma)))
1557 return -1;
1558
1559 return 0;
1560 }
1561
1562 static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
1563 {
1564 if (hid->inbuf)
1565 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->inbuf, hid->inbuf_dma);
1566 if (hid->outbuf)
1567 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->outbuf, hid->outbuf_dma);
1568 if (hid->cr)
1569 usb_buffer_free(dev, sizeof(*(hid->cr)), hid->cr, hid->cr_dma);
1570 if (hid->ctrlbuf)
1571 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->ctrlbuf, hid->ctrlbuf_dma);
1572 }
1573
1574 static struct hid_device *usb_hid_configure(struct usb_interface *intf)
1575 {
1576 struct usb_host_interface *interface = intf->cur_altsetting;
1577 struct usb_device *dev = interface_to_usbdev (intf);
1578 struct hid_descriptor *hdesc;
1579 struct hid_device *hid;
1580 unsigned quirks = 0, rsize = 0;
1581 char *buf, *rdesc;
1582 int n;
1583
1584 for (n = 0; hid_blacklist[n].idVendor; n++)
1585 if ((hid_blacklist[n].idVendor == dev->descriptor.idVendor) &&
1586 (hid_blacklist[n].idProduct == dev->descriptor.idProduct))
1587 quirks = hid_blacklist[n].quirks;
1588
1589 if (quirks & HID_QUIRK_IGNORE)
1590 return NULL;
1591
1592 if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && ((!interface->desc.bNumEndpoints) ||
1593 usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
1594 dbg("class descriptor not present\n");
1595 return NULL;
1596 }
1597
1598 for (n = 0; n < hdesc->bNumDescriptors; n++)
1599 if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
1600 rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
1601
1602 if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
1603 dbg("weird size of report descriptor (%u)", rsize);
1604 return NULL;
1605 }
1606
1607 if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
1608 dbg("couldn't allocate rdesc memory");
1609 return NULL;
1610 }
1611
1612 if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
1613 dbg("reading report descriptor failed");
1614 kfree(rdesc);
1615 return NULL;
1616 }
1617
1618 #ifdef DEBUG_DATA
1619 printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
1620 for (n = 0; n < rsize; n++)
1621 printk(" %02x", (unsigned char) rdesc[n]);
1622 printk("\n");
1623 #endif
1624
1625 if (!(hid = hid_parse_report(rdesc, rsize))) {
1626 dbg("parsing report descriptor failed");
1627 kfree(rdesc);
1628 return NULL;
1629 }
1630
1631 kfree(rdesc);
1632 hid->quirks = quirks;
1633
1634 if (hid_alloc_buffers(dev, hid)) {
1635 hid_free_buffers(dev, hid);
1636 goto fail;
1637 }
1638
1639 for (n = 0; n < interface->desc.bNumEndpoints; n++) {
1640
1641 struct usb_endpoint_descriptor *endpoint;
1642 int pipe;
1643 int interval;
1644
1645 endpoint = &interface->endpoint[n].desc;
1646 if ((endpoint->bmAttributes & 3) != 3) /* Not an interrupt endpoint */
1647 continue;
1648
1649 /* handle potential highspeed HID correctly */
1650 interval = endpoint->bInterval;
1651 if (dev->speed == USB_SPEED_HIGH)
1652 interval = 1 << (interval - 1);
1653
1654 if (endpoint->bEndpointAddress & USB_DIR_IN) {
1655 int len;
1656
1657 if (hid->urbin)
1658 continue;
1659 if (!(hid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
1660 goto fail;
1661 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
1662 len = usb_maxpacket(dev, pipe, 0);
1663 if (len > HID_BUFFER_SIZE)
1664 len = HID_BUFFER_SIZE;
1665 usb_fill_int_urb(hid->urbin, dev, pipe, hid->inbuf, len,
1666 hid_irq_in, hid, interval);
1667 hid->urbin->transfer_dma = hid->inbuf_dma;
1668 hid->urbin->transfer_flags |=(URB_NO_TRANSFER_DMA_MAP | URB_ASYNC_UNLINK);
1669 } else {
1670 if (hid->urbout)
1671 continue;
1672 if (!(hid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
1673 goto fail;
1674 pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
1675 usb_fill_int_urb(hid->urbout, dev, pipe, hid->outbuf, 0,
1676 hid_irq_out, hid, interval);
1677 hid->urbout->transfer_dma = hid->outbuf_dma;
1678 hid->urbout->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_ASYNC_UNLINK);
1679 }
1680 }
1681
1682 if (!hid->urbin) {
1683 err("couldn't find an input interrupt endpoint");
1684 goto fail;
1685 }
1686
1687 init_waitqueue_head(&hid->wait);
1688
1689 hid->outlock = SPIN_LOCK_UNLOCKED;
1690 hid->ctrllock = SPIN_LOCK_UNLOCKED;
1691
1692 hid->version = le16_to_cpu(hdesc->bcdHID);
1693 hid->country = hdesc->bCountryCode;
1694 hid->dev = dev;
1695 hid->intf = intf;
1696 hid->ifnum = interface->desc.bInterfaceNumber;
1697
1698 hid->name[0] = 0;
1699
1700 if (!(buf = kmalloc(64, GFP_KERNEL)))
1701 goto fail;
1702
1703 if (usb_string(dev, dev->descriptor.iManufacturer, buf, 64) > 0) {
1704 strcat(hid->name, buf);
1705 if (usb_string(dev, dev->descriptor.iProduct, buf, 64) > 0)
1706 snprintf(hid->name, 64, "%s %s", hid->name, buf);
1707 } else if (usb_string(dev, dev->descriptor.iProduct, buf, 128) > 0) {
1708 snprintf(hid->name, 128, "%s", buf);
1709 } else
1710 snprintf(hid->name, 128, "%04x:%04x", dev->descriptor.idVendor, dev->descriptor.idProduct);
1711
1712 usb_make_path(dev, buf, 64);
1713 snprintf(hid->phys, 64, "%s/input%d", buf,
1714 intf->altsetting[0].desc.bInterfaceNumber);
1715
1716 if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
1717 hid->uniq[0] = 0;
1718
1719 kfree(buf);
1720
1721 hid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
1722 if (!hid->urbctrl)
1723 goto fail;
1724 usb_fill_control_urb(hid->urbctrl, dev, 0, (void *) hid->cr,
1725 hid->ctrlbuf, 1, hid_ctrl, hid);
1726 hid->urbctrl->setup_dma = hid->cr_dma;
1727 hid->urbctrl->transfer_dma = hid->ctrlbuf_dma;
1728 hid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP | URB_ASYNC_UNLINK);
1729
1730 return hid;
1731
1732 fail:
1733
1734 if (hid->urbin)
1735 usb_free_urb(hid->urbin);
1736 if (hid->urbout)
1737 usb_free_urb(hid->urbout);
1738 if (hid->urbctrl)
1739 usb_free_urb(hid->urbctrl);
1740 hid_free_buffers(dev, hid);
1741 hid_free_device(hid);
1742
1743 return NULL;
1744 }
1745
1746 static void hid_disconnect(struct usb_interface *intf)
1747 {
1748 struct hid_device *hid = usb_get_intfdata (intf);
1749
1750 if (!hid)
1751 return;
1752
1753 usb_set_intfdata(intf, NULL);
1754 usb_kill_urb(hid->urbin);
1755 usb_kill_urb(hid->urbout);
1756 usb_kill_urb(hid->urbctrl);
1757
1758 if (hid->claimed & HID_CLAIMED_INPUT)
1759 hidinput_disconnect(hid);
1760 if (hid->claimed & HID_CLAIMED_HIDDEV)
1761 hiddev_disconnect(hid);
1762
1763 usb_free_urb(hid->urbin);
1764 usb_free_urb(hid->urbctrl);
1765 if (hid->urbout)
1766 usb_free_urb(hid->urbout);
1767
1768 hid_free_buffers(hid->dev, hid);
1769 hid_free_device(hid);
1770 }
1771
1772 static int hid_probe (struct usb_interface *intf, const struct usb_device_id *id)
1773 {
1774 struct hid_device *hid;
1775 char path[64];
1776 int i;
1777 char *c;
1778
1779 dbg("HID probe called for ifnum %d",
1780 intf->altsetting->desc.bInterfaceNumber);
1781
1782 if (!(hid = usb_hid_configure(intf)))
1783 return -EIO;
1784
1785 hid_init_reports(hid);
1786 hid_dump_device(hid);
1787
1788 if (!hidinput_connect(hid))
1789 hid->claimed |= HID_CLAIMED_INPUT;
1790 if (!hiddev_connect(hid))
1791 hid->claimed |= HID_CLAIMED_HIDDEV;
1792
1793 usb_set_intfdata(intf, hid);
1794
1795 if (!hid->claimed) {
1796 printk ("HID device not claimed by input or hiddev\n");
1797 hid_disconnect(intf);
1798 return -EIO;
1799 }
1800
1801 printk(KERN_INFO);
1802
1803 if (hid->claimed & HID_CLAIMED_INPUT)
1804 printk("input");
1805 if (hid->claimed == (HID_CLAIMED_INPUT | HID_CLAIMED_HIDDEV))
1806 printk(",");
1807 if (hid->claimed & HID_CLAIMED_HIDDEV)
1808 printk("hiddev%d", hid->minor);
1809
1810 c = "Device";
1811 for (i = 0; i < hid->maxcollection; i++) {
1812 if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
1813 (hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1814 (hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
1815 c = hid_types[hid->collection[i].usage & 0xffff];
1816 break;
1817 }
1818 }
1819
1820 usb_make_path(interface_to_usbdev(intf), path, 63);
1821
1822 printk(": USB HID v%x.%02x %s [%s] on %s\n",
1823 hid->version >> 8, hid->version & 0xff, c, hid->name, path);
1824
1825 return 0;
1826 }
1827
1828 static struct usb_device_id hid_usb_ids [] = {
1829 { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1830 .bInterfaceClass = USB_INTERFACE_CLASS_HID },
1831 { } /* Terminating entry */
1832 };
1833
1834 MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1835
1836 static struct usb_driver hid_driver = {
1837 .owner = THIS_MODULE,
1838 .name = "usbhid",
1839 .probe = hid_probe,
1840 .disconnect = hid_disconnect,
1841 .id_table = hid_usb_ids,
1842 };
1843
1844 static int __init hid_init(void)
1845 {
1846 int retval;
1847 retval = hiddev_init();
1848 if (retval)
1849 goto hiddev_init_fail;
1850 retval = usb_register(&hid_driver);
1851 if (retval)
1852 goto usb_register_fail;
1853 info(DRIVER_VERSION ":" DRIVER_DESC);
1854
1855 return 0;
1856 usb_register_fail:
1857 hiddev_exit();
1858 hiddev_init_fail:
1859 return retval;
1860 }
1861
1862 static void __exit hid_exit(void)
1863 {
1864 usb_deregister(&hid_driver);
1865 hiddev_exit();
1866 }
1867
1868 module_init(hid_init);
1869 module_exit(hid_exit);
1870
1871 MODULE_AUTHOR(DRIVER_AUTHOR);
1872 MODULE_DESCRIPTION(DRIVER_DESC);
1873 MODULE_LICENSE(DRIVER_LICENSE);
MOXA 2.6.9 from sdlinux-moxaart.tgz