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[PATCH] fbdev: make pxafb more robust to errors with CONFIG_FB_PXA_PARAMETERS
[deliverable/linux.git] / drivers / usb / input / hid-core.c
CommitLineData
1da177e4
LT		 1/*
2 * USB HID support for Linux
3 *
4 * Copyright (c) 1999 Andreas Gal
bf0964dc
MH		 5 * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
6 * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
1da177e4
LT		 7 */
8
9/*
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the Free
12 * Software Foundation; either version 2 of the License, or (at your option)
13 * any later version.
14 */
15
16#include <linux/module.h>
17#include <linux/slab.h>
18#include <linux/init.h>
19#include <linux/kernel.h>
20#include <linux/sched.h>
21#include <linux/list.h>
22#include <linux/mm.h>
23#include <linux/smp_lock.h>
24#include <linux/spinlock.h>
25#include <asm/unaligned.h>
26#include <asm/byteorder.h>
27#include <linux/input.h>
28#include <linux/wait.h>
29
30#undef DEBUG
31#undef DEBUG_DATA
32
33#include <linux/usb.h>
34
35#include "hid.h"
36#include <linux/hiddev.h>
37
38/*
39 * Version Information
40 */
41
bf0964dc 42#define DRIVER_VERSION "v2.6"
1da177e4
LT		 43#define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik"
44#define DRIVER_DESC "USB HID core driver"
45#define DRIVER_LICENSE "GPL"
46
47static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
48 "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
49/*
50 * Module parameters.
51 */
52
53static unsigned int hid_mousepoll_interval;
54module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
55MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
56
57/*
58 * Register a new report for a device.
59 */
60
61static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
62{
63 struct hid_report_enum *report_enum = device->report_enum + type;
64 struct hid_report *report;
65
66 if (report_enum->report_id_hash[id])
67 return report_enum->report_id_hash[id];
68
69 if (!(report = kmalloc(sizeof(struct hid_report), GFP_KERNEL)))
70 return NULL;
71 memset(report, 0, sizeof(struct hid_report));
72
73 if (id != 0)
74 report_enum->numbered = 1;
75
76 report->id = id;
77 report->type = type;
78 report->size = 0;
79 report->device = device;
80 report_enum->report_id_hash[id] = report;
81
82 list_add_tail(&report->list, &report_enum->report_list);
83
84 return report;
85}
86
87/*
88 * Register a new field for this report.
89 */
90
91static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
92{
93 struct hid_field *field;
94
95 if (report->maxfield == HID_MAX_FIELDS) {
96 dbg("too many fields in report");
97 return NULL;
98 }
99
100 if (!(field = kmalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
101 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
102
103 memset(field, 0, sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
104 + values * sizeof(unsigned));
105
106 field->index = report->maxfield++;
107 report->field[field->index] = field;
108 field->usage = (struct hid_usage *)(field + 1);
109 field->value = (unsigned *)(field->usage + usages);
110 field->report = report;
111
112 return field;
113}
114
115/*
116 * Open a collection. The type/usage is pushed on the stack.
117 */
118
119static int open_collection(struct hid_parser *parser, unsigned type)
120{
121 struct hid_collection *collection;
122 unsigned usage;
123
124 usage = parser->local.usage[0];
125
126 if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
127 dbg("collection stack overflow");
128 return -1;
129 }
130
131 if (parser->device->maxcollection == parser->device->collection_size) {
132 collection = kmalloc(sizeof(struct hid_collection) *
133 parser->device->collection_size * 2, GFP_KERNEL);
134 if (collection == NULL) {
135 dbg("failed to reallocate collection array");
136 return -1;
137 }
138 memcpy(collection, parser->device->collection,
139 sizeof(struct hid_collection) *
140 parser->device->collection_size);
141 memset(collection + parser->device->collection_size, 0,
142 sizeof(struct hid_collection) *
143 parser->device->collection_size);
144 kfree(parser->device->collection);
145 parser->device->collection = collection;
146 parser->device->collection_size *= 2;
147 }
148
149 parser->collection_stack[parser->collection_stack_ptr++] =
150 parser->device->maxcollection;
151
152 collection = parser->device->collection +
153 parser->device->maxcollection++;
154 collection->type = type;
155 collection->usage = usage;
156 collection->level = parser->collection_stack_ptr - 1;
157
158 if (type == HID_COLLECTION_APPLICATION)
159 parser->device->maxapplication++;
160
161 return 0;
162}
163
164/*
165 * Close a collection.
166 */
167
168static int close_collection(struct hid_parser *parser)
169{
170 if (!parser->collection_stack_ptr) {
171 dbg("collection stack underflow");
172 return -1;
173 }
174 parser->collection_stack_ptr--;
175 return 0;
176}
177
178/*
179 * Climb up the stack, search for the specified collection type
180 * and return the usage.
181 */
182
183static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
184{
185 int n;
186 for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
187 if (parser->device->collection[parser->collection_stack[n]].type == type)
188 return parser->device->collection[parser->collection_stack[n]].usage;
189 return 0; /* we know nothing about this usage type */
190}
191
192/*
193 * Add a usage to the temporary parser table.
194 */
195
196static int hid_add_usage(struct hid_parser *parser, unsigned usage)
197{
198 if (parser->local.usage_index >= HID_MAX_USAGES) {
199 dbg("usage index exceeded");
200 return -1;
201 }
202 parser->local.usage[parser->local.usage_index] = usage;
203 parser->local.collection_index[parser->local.usage_index] =
204 parser->collection_stack_ptr ?
205 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
206 parser->local.usage_index++;
207 return 0;
208}
209
210/*
211 * Register a new field for this report.
212 */
213
214static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
215{
216 struct hid_report *report;
217 struct hid_field *field;
218 int usages;
219 unsigned offset;
220 int i;
221
222 if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
223 dbg("hid_register_report failed");
224 return -1;
225 }
226
227 if (parser->global.logical_maximum < parser->global.logical_minimum) {
228 dbg("logical range invalid %d %d", parser->global.logical_minimum, parser->global.logical_maximum);
229 return -1;
230 }
231
232 offset = report->size;
233 report->size += parser->global.report_size * parser->global.report_count;
234
235 if (!parser->local.usage_index) /* Ignore padding fields */
05f091ab 236 return 0;
1da177e4
LT		 237
238 usages = max_t(int, parser->local.usage_index, parser->global.report_count);
239
240 if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
241 return 0;
242
243 field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
244 field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
245 field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
246
247 for (i = 0; i < usages; i++) {
248 int j = i;
249 /* Duplicate the last usage we parsed if we have excess values */
250 if (i >= parser->local.usage_index)
251 j = parser->local.usage_index - 1;
252 field->usage[i].hid = parser->local.usage[j];
253 field->usage[i].collection_index =
254 parser->local.collection_index[j];
255 }
256
257 field->maxusage = usages;
258 field->flags = flags;
259 field->report_offset = offset;
260 field->report_type = report_type;
261 field->report_size = parser->global.report_size;
262 field->report_count = parser->global.report_count;
263 field->logical_minimum = parser->global.logical_minimum;
264 field->logical_maximum = parser->global.logical_maximum;
265 field->physical_minimum = parser->global.physical_minimum;
266 field->physical_maximum = parser->global.physical_maximum;
267 field->unit_exponent = parser->global.unit_exponent;
268 field->unit = parser->global.unit;
269
270 return 0;
271}
272
273/*
274 * Read data value from item.
275 */
276
277static __inline__ __u32 item_udata(struct hid_item *item)
278{
279 switch (item->size) {
280 case 1: return item->data.u8;
281 case 2: return item->data.u16;
282 case 4: return item->data.u32;
283 }
284 return 0;
285}
286
287static __inline__ __s32 item_sdata(struct hid_item *item)
288{
289 switch (item->size) {
290 case 1: return item->data.s8;
291 case 2: return item->data.s16;
292 case 4: return item->data.s32;
293 }
294 return 0;
295}
296
297/*
298 * Process a global item.
299 */
300
301static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
302{
303 switch (item->tag) {
304
305 case HID_GLOBAL_ITEM_TAG_PUSH:
306
307 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
308 dbg("global enviroment stack overflow");
309 return -1;
310 }
311
312 memcpy(parser->global_stack + parser->global_stack_ptr++,
313 &parser->global, sizeof(struct hid_global));
314 return 0;
315
316 case HID_GLOBAL_ITEM_TAG_POP:
317
318 if (!parser->global_stack_ptr) {
319 dbg("global enviroment stack underflow");
320 return -1;
321 }
322
323 memcpy(&parser->global, parser->global_stack + --parser->global_stack_ptr,
324 sizeof(struct hid_global));
325 return 0;
326
327 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
328 parser->global.usage_page = item_udata(item);
329 return 0;
330
331 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
332 parser->global.logical_minimum = item_sdata(item);
333 return 0;
334
335 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
336 if (parser->global.logical_minimum < 0)
337 parser->global.logical_maximum = item_sdata(item);
338 else
339 parser->global.logical_maximum = item_udata(item);
340 return 0;
341
342 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
343 parser->global.physical_minimum = item_sdata(item);
344 return 0;
345
346 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
347 if (parser->global.physical_minimum < 0)
348 parser->global.physical_maximum = item_sdata(item);
349 else
350 parser->global.physical_maximum = item_udata(item);
351 return 0;
352
353 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
354 parser->global.unit_exponent = item_sdata(item);
355 return 0;
356
357 case HID_GLOBAL_ITEM_TAG_UNIT:
358 parser->global.unit = item_udata(item);
359 return 0;
360
361 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
362 if ((parser->global.report_size = item_udata(item)) > 32) {
363 dbg("invalid report_size %d", parser->global.report_size);
364 return -1;
365 }
366 return 0;
367
368 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
369 if ((parser->global.report_count = item_udata(item)) > HID_MAX_USAGES) {
370 dbg("invalid report_count %d", parser->global.report_count);
371 return -1;
372 }
373 return 0;
374
375 case HID_GLOBAL_ITEM_TAG_REPORT_ID:
376 if ((parser->global.report_id = item_udata(item)) == 0) {
377 dbg("report_id 0 is invalid");
378 return -1;
379 }
380 return 0;
381
382 default:
383 dbg("unknown global tag 0x%x", item->tag);
384 return -1;
385 }
386}
387
388/*
389 * Process a local item.
390 */
391
392static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
393{
394 __u32 data;
395 unsigned n;
396
397 if (item->size == 0) {
398 dbg("item data expected for local item");
399 return -1;
400 }
401
402 data = item_udata(item);
403
404 switch (item->tag) {
405
406 case HID_LOCAL_ITEM_TAG_DELIMITER:
407
408 if (data) {
409 /*
410 * We treat items before the first delimiter
411 * as global to all usage sets (branch 0).
412 * In the moment we process only these global
413 * items and the first delimiter set.
414 */
415 if (parser->local.delimiter_depth != 0) {
416 dbg("nested delimiters");
417 return -1;
418 }
419 parser->local.delimiter_depth++;
420 parser->local.delimiter_branch++;
421 } else {
422 if (parser->local.delimiter_depth < 1) {
423 dbg("bogus close delimiter");
424 return -1;
425 }
426 parser->local.delimiter_depth--;
427 }
428 return 1;
429
430 case HID_LOCAL_ITEM_TAG_USAGE:
431
432 if (parser->local.delimiter_branch > 1) {
433 dbg("alternative usage ignored");
434 return 0;
435 }
436
437 if (item->size <= 2)
438 data = (parser->global.usage_page << 16) + data;
439
440 return hid_add_usage(parser, data);
441
442 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
443
444 if (parser->local.delimiter_branch > 1) {
445 dbg("alternative usage ignored");
446 return 0;
447 }
448
449 if (item->size <= 2)
450 data = (parser->global.usage_page << 16) + data;
451
452 parser->local.usage_minimum = data;
453 return 0;
454
455 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
456
457 if (parser->local.delimiter_branch > 1) {
458 dbg("alternative usage ignored");
459 return 0;
460 }
461
462 if (item->size <= 2)
463 data = (parser->global.usage_page << 16) + data;
464
465 for (n = parser->local.usage_minimum; n <= data; n++)
466 if (hid_add_usage(parser, n)) {
467 dbg("hid_add_usage failed\n");
468 return -1;
469 }
470 return 0;
471
472 default:
473
474 dbg("unknown local item tag 0x%x", item->tag);
475 return 0;
476 }
477 return 0;
478}
479
480/*
481 * Process a main item.
482 */
483
484static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
485{
486 __u32 data;
487 int ret;
488
489 data = item_udata(item);
490
491 switch (item->tag) {
492 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
493 ret = open_collection(parser, data & 0xff);
494 break;
495 case HID_MAIN_ITEM_TAG_END_COLLECTION:
496 ret = close_collection(parser);
497 break;
498 case HID_MAIN_ITEM_TAG_INPUT:
499 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
500 break;
501 case HID_MAIN_ITEM_TAG_OUTPUT:
502 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
503 break;
504 case HID_MAIN_ITEM_TAG_FEATURE:
505 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
506 break;
507 default:
508 dbg("unknown main item tag 0x%x", item->tag);
509 ret = 0;
510 }
511
512 memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */
513
514 return ret;
515}
516
517/*
518 * Process a reserved item.
519 */
520
521static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
522{
523 dbg("reserved item type, tag 0x%x", item->tag);
524 return 0;
525}
526
527/*
528 * Free a report and all registered fields. The field->usage and
529 * field->value table's are allocated behind the field, so we need
530 * only to free(field) itself.
531 */
532
533static void hid_free_report(struct hid_report *report)
534{
535 unsigned n;
536
537 for (n = 0; n < report->maxfield; n++)
538 kfree(report->field[n]);
539 kfree(report);
540}
541
542/*
543 * Free a device structure, all reports, and all fields.
544 */
545
546static void hid_free_device(struct hid_device *device)
547{
548 unsigned i,j;
549
550 hid_ff_exit(device);
551
552 for (i = 0; i < HID_REPORT_TYPES; i++) {
553 struct hid_report_enum *report_enum = device->report_enum + i;
554
555 for (j = 0; j < 256; j++) {
556 struct hid_report *report = report_enum->report_id_hash[j];
557 if (report)
558 hid_free_report(report);
559 }
560 }
561
1bc3c9e1 562 kfree(device->rdesc);
1da177e4
LT		 563 kfree(device);
564}
565
566/*
567 * Fetch a report description item from the data stream. We support long
568 * items, though they are not used yet.
569 */
570
571static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
572{
573 u8 b;
574
575 if ((end - start) <= 0)
576 return NULL;
577
578 b = *start++;
579
580 item->type = (b >> 2) & 3;
581 item->tag = (b >> 4) & 15;
582
583 if (item->tag == HID_ITEM_TAG_LONG) {
584
585 item->format = HID_ITEM_FORMAT_LONG;
586
587 if ((end - start) < 2)
588 return NULL;
589
590 item->size = *start++;
591 item->tag = *start++;
592
593 if ((end - start) < item->size)
594 return NULL;
595
596 item->data.longdata = start;
597 start += item->size;
598 return start;
599 }
600
601 item->format = HID_ITEM_FORMAT_SHORT;
602 item->size = b & 3;
603
604 switch (item->size) {
605
606 case 0:
607 return start;
608
609 case 1:
610 if ((end - start) < 1)
611 return NULL;
612 item->data.u8 = *start++;
613 return start;
614
615 case 2:
616 if ((end - start) < 2)
617 return NULL;
618 item->data.u16 = le16_to_cpu(get_unaligned((__le16*)start));
619 start = (__u8 *)((__le16 *)start + 1);
620 return start;
621
622 case 3:
623 item->size++;
624 if ((end - start) < 4)
625 return NULL;
626 item->data.u32 = le32_to_cpu(get_unaligned((__le32*)start));
627 start = (__u8 *)((__le32 *)start + 1);
628 return start;
629 }
630
631 return NULL;
632}
633
634/*
635 * Parse a report description into a hid_device structure. Reports are
636 * enumerated, fields are attached to these reports.
637 */
638
639static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
640{
641 struct hid_device *device;
642 struct hid_parser *parser;
643 struct hid_item item;
644 __u8 *end;
645 unsigned i;
646 static int (*dispatch_type[])(struct hid_parser *parser,
647 struct hid_item *item) = {
648 hid_parser_main,
649 hid_parser_global,
650 hid_parser_local,
651 hid_parser_reserved
652 };
653
654 if (!(device = kmalloc(sizeof(struct hid_device), GFP_KERNEL)))
655 return NULL;
656 memset(device, 0, sizeof(struct hid_device));
657
658 if (!(device->collection = kmalloc(sizeof(struct hid_collection) *
659 HID_DEFAULT_NUM_COLLECTIONS, GFP_KERNEL))) {
660 kfree(device);
661 return NULL;
662 }
663 memset(device->collection, 0, sizeof(struct hid_collection) *
664 HID_DEFAULT_NUM_COLLECTIONS);
665 device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
666
667 for (i = 0; i < HID_REPORT_TYPES; i++)
668 INIT_LIST_HEAD(&device->report_enum[i].report_list);
669
670 if (!(device->rdesc = (__u8 *)kmalloc(size, GFP_KERNEL))) {
671 kfree(device->collection);
672 kfree(device);
673 return NULL;
674 }
675 memcpy(device->rdesc, start, size);
676 device->rsize = size;
677
678 if (!(parser = kmalloc(sizeof(struct hid_parser), GFP_KERNEL))) {
679 kfree(device->rdesc);
680 kfree(device->collection);
681 kfree(device);
682 return NULL;
683 }
684 memset(parser, 0, sizeof(struct hid_parser));
685 parser->device = device;
686
687 end = start + size;
688 while ((start = fetch_item(start, end, &item)) != NULL) {
689
690 if (item.format != HID_ITEM_FORMAT_SHORT) {
691 dbg("unexpected long global item");
692 kfree(device->collection);
693 hid_free_device(device);
694 kfree(parser);
695 return NULL;
696 }
697
698 if (dispatch_type[item.type](parser, &item)) {
699 dbg("item %u %u %u %u parsing failed\n",
700 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
701 kfree(device->collection);
702 hid_free_device(device);
703 kfree(parser);
704 return NULL;
705 }
706
707 if (start == end) {
708 if (parser->collection_stack_ptr) {
709 dbg("unbalanced collection at end of report description");
710 kfree(device->collection);
711 hid_free_device(device);
712 kfree(parser);
713 return NULL;
714 }
715 if (parser->local.delimiter_depth) {
716 dbg("unbalanced delimiter at end of report description");
717 kfree(device->collection);
718 hid_free_device(device);
719 kfree(parser);
720 return NULL;
721 }
722 kfree(parser);
723 return device;
724 }
725 }
726
727 dbg("item fetching failed at offset %d\n", (int)(end - start));
728 kfree(device->collection);
729 hid_free_device(device);
730 kfree(parser);
731 return NULL;
732}
733
734/*
735 * Convert a signed n-bit integer to signed 32-bit integer. Common
736 * cases are done through the compiler, the screwed things has to be
737 * done by hand.
738 */
739
740static __inline__ __s32 snto32(__u32 value, unsigned n)
741{
742 switch (n) {
743 case 8: return ((__s8)value);
744 case 16: return ((__s16)value);
745 case 32: return ((__s32)value);
746 }
747 return value & (1 << (n - 1)) ? value | (-1 << n) : value;
748}
749
750/*
751 * Convert a signed 32-bit integer to a signed n-bit integer.
752 */
753
754static __inline__ __u32 s32ton(__s32 value, unsigned n)
755{
756 __s32 a = value >> (n - 1);
757 if (a && a != -1)
758 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
759 return value & ((1 << n) - 1);
760}
761
762/*
763 * Extract/implement a data field from/to a report.
764 */
765
766static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
767{
768 report += (offset >> 5) << 2; offset &= 31;
bef3768d 769 return (le64_to_cpu(get_unaligned((__le64*)report)) >> offset) & ((1ULL << n) - 1);
1da177e4
LT		 770}
771
772static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
773{
774 report += (offset >> 5) << 2; offset &= 31;
775 put_unaligned((get_unaligned((__le64*)report)
776 & cpu_to_le64(~((((__u64) 1 << n) - 1) << offset)))
777 | cpu_to_le64((__u64)value << offset), (__le64*)report);
778}
779
780/*
781 * Search an array for a value.
782 */
783
784static __inline__ int search(__s32 *array, __s32 value, unsigned n)
785{
786 while (n--) {
787 if (*array++ == value)
788 return 0;
789 }
790 return -1;
791}
792
bc5d0482 793static void hid_process_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, int interrupt, struct pt_regs *regs)
1da177e4
LT		 794{
795 hid_dump_input(usage, value);
796 if (hid->claimed & HID_CLAIMED_INPUT)
797 hidinput_hid_event(hid, field, usage, value, regs);
bc5d0482 798 if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt)
1da177e4
LT		 799 hiddev_hid_event(hid, field, usage, value, regs);
800}
801
802/*
803 * Analyse a received field, and fetch the data from it. The field
804 * content is stored for next report processing (we do differential
805 * reporting to the layer).
806 */
807
bc5d0482 808static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, int interrupt, struct pt_regs *regs)
1da177e4
LT		 809{
810 unsigned n;
811 unsigned count = field->report_count;
812 unsigned offset = field->report_offset;
813 unsigned size = field->report_size;
814 __s32 min = field->logical_minimum;
815 __s32 max = field->logical_maximum;
816 __s32 *value;
817
818 if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC)))
819 return;
820
821 for (n = 0; n < count; n++) {
822
823 value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
824 extract(data, offset + n * size, size);
825
826 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
827 && value[n] >= min && value[n] <= max
828 && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
829 goto exit;
830 }
831
832 for (n = 0; n < count; n++) {
833
834 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
bc5d0482 835 hid_process_event(hid, field, &field->usage[n], value[n], interrupt, regs);
1da177e4
LT		 836 continue;
837 }
838
839 if (field->value[n] >= min && field->value[n] <= max
840 && field->usage[field->value[n] - min].hid
841 && search(value, field->value[n], count))
bc5d0482 842 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt, regs);
1da177e4
LT		 843
844 if (value[n] >= min && value[n] <= max
845 && field->usage[value[n] - min].hid
846 && search(field->value, value[n], count))
bc5d0482 847 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt, regs);
1da177e4
LT		 848 }
849
850 memcpy(field->value, value, count * sizeof(__s32));
851exit:
852 kfree(value);
853}
854
bc5d0482 855static int hid_input_report(int type, struct urb *urb, int interrupt, struct pt_regs *regs)
1da177e4
LT		 856{
857 struct hid_device *hid = urb->context;
858 struct hid_report_enum *report_enum = hid->report_enum + type;
859 u8 *data = urb->transfer_buffer;
860 int len = urb->actual_length;
861 struct hid_report *report;
862 int n, size;
863
864 if (!len) {
865 dbg("empty report");
866 return -1;
867 }
868
869#ifdef DEBUG_DATA
870 printk(KERN_DEBUG __FILE__ ": report (size %u) (%snumbered)\n", len, report_enum->numbered ? "" : "un");
871#endif
872
873 n = 0; /* Normally report number is 0 */
874 if (report_enum->numbered) { /* Device uses numbered reports, data[0] is report number */
875 n = *data++;
876 len--;
877 }
878
879#ifdef DEBUG_DATA
880 {
881 int i;
882 printk(KERN_DEBUG __FILE__ ": report %d (size %u) = ", n, len);
883 for (i = 0; i < len; i++)
884 printk(" %02x", data[i]);
885 printk("\n");
886 }
887#endif
888
889 if (!(report = report_enum->report_id_hash[n])) {
890 dbg("undefined report_id %d received", n);
891 return -1;
892 }
893
894 size = ((report->size - 1) >> 3) + 1;
895
896 if (len < size)
897 dbg("report %d is too short, (%d < %d)", report->id, len, size);
898
899 if (hid->claimed & HID_CLAIMED_HIDDEV)
900 hiddev_report_event(hid, report);
901
902 for (n = 0; n < report->maxfield; n++)
bc5d0482 903 hid_input_field(hid, report->field[n], data, interrupt, regs);
1da177e4
LT		 904
905 if (hid->claimed & HID_CLAIMED_INPUT)
906 hidinput_report_event(hid, report);
907
908 return 0;
909}
910
911/*
912 * Input interrupt completion handler.
913 */
914
915static void hid_irq_in(struct urb *urb, struct pt_regs *regs)
916{
917 struct hid_device *hid = urb->context;
918 int status;
919
920 switch (urb->status) {
921 case 0: /* success */
bc5d0482 922 hid_input_report(HID_INPUT_REPORT, urb, 1, regs);
1da177e4
LT		 923 break;
924 case -ECONNRESET: /* unlink */
925 case -ENOENT:
926 case -EPERM:
927 case -ESHUTDOWN: /* unplug */
928 case -EILSEQ: /* unplug timeout on uhci */
929 return;
930 case -ETIMEDOUT: /* NAK */
931 break;
932 default: /* error */
933 warn("input irq status %d received", urb->status);
934 }
935
936 status = usb_submit_urb(urb, SLAB_ATOMIC);
937 if (status)
938 err("can't resubmit intr, %s-%s/input%d, status %d",
939 hid->dev->bus->bus_name, hid->dev->devpath,
940 hid->ifnum, status);
941}
942
943/*
944 * Output the field into the report.
945 */
946
947static void hid_output_field(struct hid_field *field, __u8 *data)
948{
949 unsigned count = field->report_count;
950 unsigned offset = field->report_offset;
951 unsigned size = field->report_size;
952 unsigned n;
953
954 for (n = 0; n < count; n++) {
955 if (field->logical_minimum < 0) /* signed values */
956 implement(data, offset + n * size, size, s32ton(field->value[n], size));
957 else /* unsigned values */
958 implement(data, offset + n * size, size, field->value[n]);
959 }
960}
961
962/*
963 * Create a report.
964 */
965
966static void hid_output_report(struct hid_report *report, __u8 *data)
967{
968 unsigned n;
969
970 if (report->id > 0)
971 *data++ = report->id;
972
973 for (n = 0; n < report->maxfield; n++)
974 hid_output_field(report->field[n], data);
975}
976
977/*
978 * Set a field value. The report this field belongs to has to be
979 * created and transferred to the device, to set this value in the
980 * device.
981 */
982
983int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
984{
985 unsigned size = field->report_size;
986
987 hid_dump_input(field->usage + offset, value);
988
989 if (offset >= field->report_count) {
990 dbg("offset (%d) exceeds report_count (%d)", offset, field->report_count);
991 hid_dump_field(field, 8);
992 return -1;
993 }
994 if (field->logical_minimum < 0) {
995 if (value != snto32(s32ton(value, size), size)) {
996 dbg("value %d is out of range", value);
997 return -1;
998 }
999 }
1000 field->value[offset] = value;
1001 return 0;
1002}
1003
1004/*
1005 * Find a report field with a specified HID usage.
1006 */
1007
1008struct hid_field *hid_find_field_by_usage(struct hid_device *hid, __u32 wanted_usage, int type)
1009{
1010 struct hid_report *report;
1011 int i;
1012
1013 list_for_each_entry(report, &hid->report_enum[type].report_list, list)
1014 for (i = 0; i < report->maxfield; i++)
1015 if (report->field[i]->logical == wanted_usage)
1016 return report->field[i];
1017 return NULL;
1018}
1019
1020static int hid_submit_out(struct hid_device *hid)
1021{
1022 struct hid_report *report;
1023
1024 report = hid->out[hid->outtail];
1025
1026 hid_output_report(report, hid->outbuf);
1027 hid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1028 hid->urbout->dev = hid->dev;
1029
1030 dbg("submitting out urb");
1031
1032 if (usb_submit_urb(hid->urbout, GFP_ATOMIC)) {
1033 err("usb_submit_urb(out) failed");
1034 return -1;
1035 }
1036
1037 return 0;
1038}
1039
1040static int hid_submit_ctrl(struct hid_device *hid)
1041{
1042 struct hid_report *report;
1043 unsigned char dir;
1044 int len;
1045
1046 report = hid->ctrl[hid->ctrltail].report;
1047 dir = hid->ctrl[hid->ctrltail].dir;
1048
1049 len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1050 if (dir == USB_DIR_OUT) {
1051 hid_output_report(report, hid->ctrlbuf);
1052 hid->urbctrl->pipe = usb_sndctrlpipe(hid->dev, 0);
1053 hid->urbctrl->transfer_buffer_length = len;
1054 } else {
1055 int maxpacket, padlen;
1056
1057 hid->urbctrl->pipe = usb_rcvctrlpipe(hid->dev, 0);
1058 maxpacket = usb_maxpacket(hid->dev, hid->urbctrl->pipe, 0);
1059 if (maxpacket > 0) {
1060 padlen = (len + maxpacket - 1) / maxpacket;
1061 padlen *= maxpacket;
bf0964dc
MH		 1062 if (padlen > hid->bufsize)
1063 padlen = hid->bufsize;
1da177e4
LT		 1064 } else
1065 padlen = 0;
1066 hid->urbctrl->transfer_buffer_length = padlen;
1067 }
1068 hid->urbctrl->dev = hid->dev;
1069
1070 hid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
1071 hid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
1072 hid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
1073 hid->cr->wIndex = cpu_to_le16(hid->ifnum);
1074 hid->cr->wLength = cpu_to_le16(len);
1075
1076 dbg("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u",
1077 hid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
1078 hid->cr->wValue, hid->cr->wIndex, hid->cr->wLength);
1079
1080 if (usb_submit_urb(hid->urbctrl, GFP_ATOMIC)) {
1081 err("usb_submit_urb(ctrl) failed");
1082 return -1;
1083 }
1084
1085 return 0;
1086}
1087
1088/*
1089 * Output interrupt completion handler.
1090 */
1091
1092static void hid_irq_out(struct urb *urb, struct pt_regs *regs)
1093{
1094 struct hid_device *hid = urb->context;
1095 unsigned long flags;
1096 int unplug = 0;
1097
1098 switch (urb->status) {
1099 case 0: /* success */
c4786ca8 1100 break;
1da177e4
LT		 1101 case -ESHUTDOWN: /* unplug */
1102 case -EILSEQ: /* unplug timeout on uhci */
1103 unplug = 1;
1104 case -ECONNRESET: /* unlink */
1105 case -ENOENT:
1106 break;
1107 default: /* error */
1108 warn("output irq status %d received", urb->status);
1109 }
1110
1111 spin_lock_irqsave(&hid->outlock, flags);
1112
1113 if (unplug)
1114 hid->outtail = hid->outhead;
1115 else
1116 hid->outtail = (hid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
1117
1118 if (hid->outhead != hid->outtail) {
1119 if (hid_submit_out(hid)) {
1120 clear_bit(HID_OUT_RUNNING, &hid->iofl);;
1121 wake_up(&hid->wait);
1122 }
1123 spin_unlock_irqrestore(&hid->outlock, flags);
1124 return;
1125 }
1126
1127 clear_bit(HID_OUT_RUNNING, &hid->iofl);
1128 spin_unlock_irqrestore(&hid->outlock, flags);
1129 wake_up(&hid->wait);
1130}
1131
1132/*
1133 * Control pipe completion handler.
1134 */
1135
1136static void hid_ctrl(struct urb *urb, struct pt_regs *regs)
1137{
1138 struct hid_device *hid = urb->context;
1139 unsigned long flags;
1140 int unplug = 0;
1141
1142 spin_lock_irqsave(&hid->ctrllock, flags);
1143
1144 switch (urb->status) {
1145 case 0: /* success */
1146 if (hid->ctrl[hid->ctrltail].dir == USB_DIR_IN)
bc5d0482 1147 hid_input_report(hid->ctrl[hid->ctrltail].report->type, urb, 0, regs);
c4786ca8 1148 break;
1da177e4
LT		 1149 case -ESHUTDOWN: /* unplug */
1150 case -EILSEQ: /* unplug timectrl on uhci */
1151 unplug = 1;
1152 case -ECONNRESET: /* unlink */
1153 case -ENOENT:
1154 case -EPIPE: /* report not available */
1155 break;
1156 default: /* error */
1157 warn("ctrl urb status %d received", urb->status);
1158 }
1159
1160 if (unplug)
1161 hid->ctrltail = hid->ctrlhead;
1162 else
1163 hid->ctrltail = (hid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
1164
1165 if (hid->ctrlhead != hid->ctrltail) {
1166 if (hid_submit_ctrl(hid)) {
1167 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1168 wake_up(&hid->wait);
1169 }
1170 spin_unlock_irqrestore(&hid->ctrllock, flags);
1171 return;
1172 }
1173
1174 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1175 spin_unlock_irqrestore(&hid->ctrllock, flags);
1176 wake_up(&hid->wait);
1177}
1178
1179void hid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
1180{
1181 int head;
1182 unsigned long flags;
1183
1184 if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
1185 return;
1186
1187 if (hid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
1188
1189 spin_lock_irqsave(&hid->outlock, flags);
1190
1191 if ((head = (hid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == hid->outtail) {
1192 spin_unlock_irqrestore(&hid->outlock, flags);
1193 warn("output queue full");
1194 return;
1195 }
1196
1197 hid->out[hid->outhead] = report;
1198 hid->outhead = head;
1199
1200 if (!test_and_set_bit(HID_OUT_RUNNING, &hid->iofl))
1201 if (hid_submit_out(hid))
1202 clear_bit(HID_OUT_RUNNING, &hid->iofl);
1203
1204 spin_unlock_irqrestore(&hid->outlock, flags);
1205 return;
1206 }
1207
1208 spin_lock_irqsave(&hid->ctrllock, flags);
1209
1210 if ((head = (hid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == hid->ctrltail) {
1211 spin_unlock_irqrestore(&hid->ctrllock, flags);
1212 warn("control queue full");
1213 return;
1214 }
1215
1216 hid->ctrl[hid->ctrlhead].report = report;
1217 hid->ctrl[hid->ctrlhead].dir = dir;
1218 hid->ctrlhead = head;
1219
1220 if (!test_and_set_bit(HID_CTRL_RUNNING, &hid->iofl))
1221 if (hid_submit_ctrl(hid))
1222 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1223
1224 spin_unlock_irqrestore(&hid->ctrllock, flags);
1225}
1226
1227int hid_wait_io(struct hid_device *hid)
1228{
1229 if (!wait_event_timeout(hid->wait, (!test_bit(HID_CTRL_RUNNING, &hid->iofl) &&
1230 !test_bit(HID_OUT_RUNNING, &hid->iofl)),
1231 10*HZ)) {
1232 dbg("timeout waiting for ctrl or out queue to clear");
1233 return -1;
1234 }
1235
1236 return 0;
1237}
1238
854561b0
VP		 1239static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle)
1240{
71387bd7 1241 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
854561b0
VP		 1242 HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (idle << 8) | report,
1243 ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT);
1244}
1245
1da177e4
LT		 1246static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
1247 unsigned char type, void *buf, int size)
1248{
1249 int result, retries = 4;
1250
1251 memset(buf,0,size); // Make sure we parse really received data
1252
1253 do {
1254 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
1255 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
1256 (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT);
1257 retries--;
1258 } while (result < size && retries);
1259 return result;
1260}
1261
1262int hid_open(struct hid_device *hid)
1263{
1264 if (hid->open++)
1265 return 0;
1266
1267 hid->urbin->dev = hid->dev;
1268
1269 if (usb_submit_urb(hid->urbin, GFP_KERNEL))
1270 return -EIO;
1271
1272 return 0;
1273}
1274
1275void hid_close(struct hid_device *hid)
1276{
1277 if (!--hid->open)
1278 usb_kill_urb(hid->urbin);
1279}
1280
1281/*
1282 * Initialize all reports
1283 */
1284
1285void hid_init_reports(struct hid_device *hid)
1286{
1287 struct hid_report *report;
1288 int err, ret;
1289
bf0964dc 1290 list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list)
1da177e4 1291 hid_submit_report(hid, report, USB_DIR_IN);
1da177e4
LT		 1292
1293 list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list)
1294 hid_submit_report(hid, report, USB_DIR_IN);
1295
1296 err = 0;
1297 ret = hid_wait_io(hid);
1298 while (ret) {
1299 err |= ret;
1300 if (test_bit(HID_CTRL_RUNNING, &hid->iofl))
1301 usb_kill_urb(hid->urbctrl);
1302 if (test_bit(HID_OUT_RUNNING, &hid->iofl))
1303 usb_kill_urb(hid->urbout);
1304 ret = hid_wait_io(hid);
1305 }
1306
1307 if (err)
1308 warn("timeout initializing reports\n");
1da177e4
LT		 1309}
1310
1311#define USB_VENDOR_ID_WACOM 0x056a
1312#define USB_DEVICE_ID_WACOM_PENPARTNER 0x0000
1313#define USB_DEVICE_ID_WACOM_GRAPHIRE 0x0010
1314#define USB_DEVICE_ID_WACOM_INTUOS 0x0020
1315#define USB_DEVICE_ID_WACOM_PL 0x0030
1316#define USB_DEVICE_ID_WACOM_INTUOS2 0x0040
1317#define USB_DEVICE_ID_WACOM_VOLITO 0x0060
1318#define USB_DEVICE_ID_WACOM_PTU 0x0003
5ce0482e
PC		 1319#define USB_DEVICE_ID_WACOM_INTUOS3 0x00B0
1320#define USB_DEVICE_ID_WACOM_CINTIQ 0x003F
116d75bd 1321#define USB_DEVICE_ID_WACOM_DTF 0x00C0
1da177e4 1322
53880546
SV		 1323#define USB_VENDOR_ID_ACECAD 0x0460
1324#define USB_DEVICE_ID_ACECAD_FLAIR 0x0004
1325#define USB_DEVICE_ID_ACECAD_302 0x0008
1326
1da177e4
LT		 1327#define USB_VENDOR_ID_KBGEAR 0x084e
1328#define USB_DEVICE_ID_KBGEAR_JAMSTUDIO 0x1001
1329
1330#define USB_VENDOR_ID_AIPTEK 0x08ca
1331#define USB_DEVICE_ID_AIPTEK_01 0x0001
1332#define USB_DEVICE_ID_AIPTEK_10 0x0010
1333#define USB_DEVICE_ID_AIPTEK_20 0x0020
1334#define USB_DEVICE_ID_AIPTEK_21 0x0021
1335#define USB_DEVICE_ID_AIPTEK_22 0x0022
1336#define USB_DEVICE_ID_AIPTEK_23 0x0023
1337#define USB_DEVICE_ID_AIPTEK_24 0x0024
1338
1339#define USB_VENDOR_ID_GRIFFIN 0x077d
1340#define USB_DEVICE_ID_POWERMATE 0x0410
1341#define USB_DEVICE_ID_SOUNDKNOB 0x04AA
1342
1343#define USB_VENDOR_ID_ATEN 0x0557
1344#define USB_DEVICE_ID_ATEN_UC100KM 0x2004
1345#define USB_DEVICE_ID_ATEN_CS124U 0x2202
1346#define USB_DEVICE_ID_ATEN_2PORTKVM 0x2204
1347#define USB_DEVICE_ID_ATEN_4PORTKVM 0x2205
1348#define USB_DEVICE_ID_ATEN_4PORTKVMC 0x2208
1349
1350#define USB_VENDOR_ID_TOPMAX 0x0663
1351#define USB_DEVICE_ID_TOPMAX_COBRAPAD 0x0103
1352
1353#define USB_VENDOR_ID_HAPP 0x078b
1354#define USB_DEVICE_ID_UGCI_DRIVING 0x0010
1355#define USB_DEVICE_ID_UGCI_FLYING 0x0020
1356#define USB_DEVICE_ID_UGCI_FIGHTING 0x0030
1357
1358#define USB_VENDOR_ID_MGE 0x0463
1359#define USB_DEVICE_ID_MGE_UPS 0xffff
1360#define USB_DEVICE_ID_MGE_UPS1 0x0001
1361
1362#define USB_VENDOR_ID_ONTRAK 0x0a07
1363#define USB_DEVICE_ID_ONTRAK_ADU100 0x0064
1364
1365#define USB_VENDOR_ID_TANGTOP 0x0d3d
1366#define USB_DEVICE_ID_TANGTOP_USBPS2 0x0001
1367
1368#define USB_VENDOR_ID_ESSENTIAL_REALITY 0x0d7f
1369#define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100
1370
1371#define USB_VENDOR_ID_A4TECH 0x09da
1372#define USB_DEVICE_ID_A4TECH_WCP32PU 0x0006
1373
61cdecd9 1374#define USB_VENDOR_ID_AASHIMA 0x06d6
6345fdfd 1375#define USB_DEVICE_ID_AASHIMA_GAMEPAD 0x0025
61cdecd9 1376#define USB_DEVICE_ID_AASHIMA_PREDATOR 0x0026
6345fdfd 1377
1da177e4
LT		 1378#define USB_VENDOR_ID_CYPRESS 0x04b4
1379#define USB_DEVICE_ID_CYPRESS_MOUSE 0x0001
1380#define USB_DEVICE_ID_CYPRESS_HIDCOM 0x5500
7d25258f 1381#define USB_DEVICE_ID_CYPRESS_ULTRAMOUSE 0x7417
1da177e4
LT		 1382
1383#define USB_VENDOR_ID_BERKSHIRE 0x0c98
1384#define USB_DEVICE_ID_BERKSHIRE_PCWD 0x1140
1385
1386#define USB_VENDOR_ID_ALPS 0x0433
1387#define USB_DEVICE_ID_IBM_GAMEPAD 0x1101
1388
1389#define USB_VENDOR_ID_SAITEK 0x06a3
1390#define USB_DEVICE_ID_SAITEK_RUMBLEPAD 0xff17
1391
1392#define USB_VENDOR_ID_NEC 0x073e
1393#define USB_DEVICE_ID_NEC_USB_GAME_PAD 0x0301
1394
1395#define USB_VENDOR_ID_CHIC 0x05fe
1396#define USB_DEVICE_ID_CHIC_GAMEPAD 0x0014
1397
1398#define USB_VENDOR_ID_GLAB 0x06c2
1399#define USB_DEVICE_ID_4_PHIDGETSERVO_30 0x0038
1400#define USB_DEVICE_ID_1_PHIDGETSERVO_30 0x0039
1401#define USB_DEVICE_ID_8_8_8_IF_KIT 0x0045
1402#define USB_DEVICE_ID_0_0_4_IF_KIT 0x0040
1403#define USB_DEVICE_ID_0_8_8_IF_KIT 0x0053
1404
1405#define USB_VENDOR_ID_WISEGROUP 0x0925
1406#define USB_DEVICE_ID_1_PHIDGETSERVO_20 0x8101
1407#define USB_DEVICE_ID_4_PHIDGETSERVO_20 0x8104
1408
1409#define USB_VENDOR_ID_CODEMERCS 0x07c0
1410#define USB_DEVICE_ID_CODEMERCS_IOW40 0x1500
1411#define USB_DEVICE_ID_CODEMERCS_IOW24 0x1501
1412#define USB_DEVICE_ID_CODEMERCS_IOW48 0x1502
1413#define USB_DEVICE_ID_CODEMERCS_IOW28 0x1503
1414
1415#define USB_VENDOR_ID_DELORME 0x1163
1416#define USB_DEVICE_ID_DELORME_EARTHMATE 0x0100
dc1d1003 1417#define USB_DEVICE_ID_DELORME_EM_LT20 0x0200
1da177e4
LT		 1418
1419#define USB_VENDOR_ID_MCC 0x09db
1420#define USB_DEVICE_ID_MCC_PMD1024LS 0x0076
1421#define USB_DEVICE_ID_MCC_PMD1208LS 0x007a
1422
1423#define USB_VENDOR_ID_CHICONY 0x04f2
1424#define USB_DEVICE_ID_CHICONY_USBHUB_KB 0x0100
1425
1426#define USB_VENDOR_ID_BTC 0x046e
1427#define USB_DEVICE_ID_BTC_KEYBOARD 0x5303
1428
4871d3be
GKH		 1429#define USB_VENDOR_ID_VERNIER 0x08f7
1430#define USB_DEVICE_ID_VERNIER_LABPRO 0x0001
1431#define USB_DEVICE_ID_VERNIER_GOTEMP 0x0002
1432#define USB_DEVICE_ID_VERNIER_SKIP 0x0003
1433#define USB_DEVICE_ID_VERNIER_CYCLOPS 0x0004
1434
8fd6db47 1435#define USB_VENDOR_ID_LD 0x0f11
d344c5e0 1436#define USB_DEVICE_ID_CASSY 0x1000
8fd6db47
MH		 1437#define USB_DEVICE_ID_POCKETCASSY 0x1010
1438#define USB_DEVICE_ID_MOBILECASSY 0x1020
1439#define USB_DEVICE_ID_JWM 0x1080
1440#define USB_DEVICE_ID_DMMP 0x1081
1441#define USB_DEVICE_ID_UMIP 0x1090
1442#define USB_DEVICE_ID_VIDEOCOM 0x1200
1443#define USB_DEVICE_ID_COM3LAB 0x2000
1444#define USB_DEVICE_ID_TELEPORT 0x2010
1445#define USB_DEVICE_ID_NETWORKANALYSER 0x2020
1446#define USB_DEVICE_ID_POWERCONTROL 0x2030
1447
c58de6d9
VP		 1448#define USB_VENDOR_ID_APPLE 0x05ac
1449#define USB_DEVICE_ID_APPLE_POWERMOUSE 0x0304
1da177e4
LT		 1450
1451/*
1452 * Alphabetically sorted blacklist by quirk type.
1453 */
1454
1455static struct hid_blacklist {
1456 __u16 idVendor;
1457 __u16 idProduct;
1458 unsigned quirks;
1459} hid_blacklist[] = {
1460
1461 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01, HID_QUIRK_IGNORE },
1462 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10, HID_QUIRK_IGNORE },
1463 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20, HID_QUIRK_IGNORE },
1464 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21, HID_QUIRK_IGNORE },
1465 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22, HID_QUIRK_IGNORE },
1466 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23, HID_QUIRK_IGNORE },
1467 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24, HID_QUIRK_IGNORE },
1468 { USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD, HID_QUIRK_IGNORE },
1469 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW40, HID_QUIRK_IGNORE },
1470 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW24, HID_QUIRK_IGNORE },
1471 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW48, HID_QUIRK_IGNORE },
1472 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW28, HID_QUIRK_IGNORE },
1473 { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM, HID_QUIRK_IGNORE },
7d25258f 1474 { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE, HID_QUIRK_IGNORE },
1da177e4 1475 { USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE, HID_QUIRK_IGNORE },
dc1d1003 1476 { USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20, HID_QUIRK_IGNORE },
1da177e4
LT		 1477 { USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5, HID_QUIRK_IGNORE },
1478 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1479 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1480 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT, HID_QUIRK_IGNORE },
1481 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT, HID_QUIRK_IGNORE },
1482 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT, HID_QUIRK_IGNORE },
1483 { USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE, HID_QUIRK_IGNORE },
1484 { USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB, HID_QUIRK_IGNORE },
1485 { USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO, HID_QUIRK_IGNORE },
8fd6db47
MH		 1486 { USB_VENDOR_ID_LD, USB_DEVICE_ID_CASSY, HID_QUIRK_IGNORE },
1487 { USB_VENDOR_ID_LD, USB_DEVICE_ID_POCKETCASSY, HID_QUIRK_IGNORE },
1488 { USB_VENDOR_ID_LD, USB_DEVICE_ID_MOBILECASSY, HID_QUIRK_IGNORE },
1489 { USB_VENDOR_ID_LD, USB_DEVICE_ID_JWM, HID_QUIRK_IGNORE },
1490 { USB_VENDOR_ID_LD, USB_DEVICE_ID_DMMP, HID_QUIRK_IGNORE },
1491 { USB_VENDOR_ID_LD, USB_DEVICE_ID_UMIP, HID_QUIRK_IGNORE },
1492 { USB_VENDOR_ID_LD, USB_DEVICE_ID_VIDEOCOM, HID_QUIRK_IGNORE },
1493 { USB_VENDOR_ID_LD, USB_DEVICE_ID_COM3LAB, HID_QUIRK_IGNORE },
1494 { USB_VENDOR_ID_LD, USB_DEVICE_ID_TELEPORT, HID_QUIRK_IGNORE },
1495 { USB_VENDOR_ID_LD, USB_DEVICE_ID_NETWORKANALYSER, HID_QUIRK_IGNORE },
1496 { USB_VENDOR_ID_LD, USB_DEVICE_ID_POWERCONTROL, HID_QUIRK_IGNORE },
1da177e4
LT		 1497 { USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS, HID_QUIRK_IGNORE },
1498 { USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS, HID_QUIRK_IGNORE },
1499 { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_IGNORE },
1500 { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1, HID_QUIRK_IGNORE },
1501 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100, HID_QUIRK_IGNORE },
1502 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100, HID_QUIRK_IGNORE },
1503 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200, HID_QUIRK_IGNORE },
1504 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300, HID_QUIRK_IGNORE },
1505 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400, HID_QUIRK_IGNORE },
1506 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500, HID_QUIRK_IGNORE },
4871d3be
GKH		 1507 { USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO, HID_QUIRK_IGNORE },
1508 { USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP, HID_QUIRK_IGNORE },
1509 { USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP, HID_QUIRK_IGNORE },
1510 { USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS, HID_QUIRK_IGNORE },
1da177e4
LT		 1511 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PENPARTNER, HID_QUIRK_IGNORE },
1512 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE, HID_QUIRK_IGNORE },
1513 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 1, HID_QUIRK_IGNORE },
1514 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 2, HID_QUIRK_IGNORE },
1515 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 3, HID_QUIRK_IGNORE },
1516 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 4, HID_QUIRK_IGNORE },
1517 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS, HID_QUIRK_IGNORE },
1518 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 1, HID_QUIRK_IGNORE },
1519 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 2, HID_QUIRK_IGNORE },
1520 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 3, HID_QUIRK_IGNORE },
1521 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 4, HID_QUIRK_IGNORE },
1522 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL, HID_QUIRK_IGNORE },
1523 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 1, HID_QUIRK_IGNORE },
1524 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 2, HID_QUIRK_IGNORE },
1525 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 3, HID_QUIRK_IGNORE },
1526 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 4, HID_QUIRK_IGNORE },
1527 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 5, HID_QUIRK_IGNORE },
116d75bd
PC		 1528 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 7, HID_QUIRK_IGNORE },
1529 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 8, HID_QUIRK_IGNORE },
1530 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 9, HID_QUIRK_IGNORE },
1da177e4
LT		 1531 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 1, HID_QUIRK_IGNORE },
1532 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 2, HID_QUIRK_IGNORE },
1533 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 3, HID_QUIRK_IGNORE },
1534 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 4, HID_QUIRK_IGNORE },
1535 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 5, HID_QUIRK_IGNORE },
1536 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 7, HID_QUIRK_IGNORE },
1537 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO, HID_QUIRK_IGNORE },
116d75bd
PC		 1538 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO + 1, HID_QUIRK_IGNORE },
1539 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO + 2, HID_QUIRK_IGNORE },
1540 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO + 3, HID_QUIRK_IGNORE },
1541 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO + 4, HID_QUIRK_IGNORE },
1542 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 5, HID_QUIRK_IGNORE },
1543 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 6, HID_QUIRK_IGNORE },
1da177e4 1544 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PTU, HID_QUIRK_IGNORE },
5ce0482e
PC		 1545 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3, HID_QUIRK_IGNORE },
1546 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3 + 1, HID_QUIRK_IGNORE },
1547 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3 + 2, HID_QUIRK_IGNORE },
116d75bd 1548 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3 + 5, HID_QUIRK_IGNORE },
5ce0482e 1549 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_CINTIQ, HID_QUIRK_IGNORE },
116d75bd 1550 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_DTF, HID_QUIRK_IGNORE },
1da177e4
LT		 1551 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1552 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1553
53880546
SV		 1554 { USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR, HID_QUIRK_IGNORE },
1555 { USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302, HID_QUIRK_IGNORE },
1556
1da177e4
LT		 1557 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
1558 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
1559 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
1560 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
1561 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
1562 { USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_KEYBOARD, HID_QUIRK_NOGET},
1563 { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_USBHUB_KB, HID_QUIRK_NOGET},
1564 { USB_VENDOR_ID_TANGTOP, USB_DEVICE_ID_TANGTOP_USBPS2, HID_QUIRK_NOGET },
1565
c58de6d9 1566 { USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_POWERMOUSE, HID_QUIRK_2WHEEL_POWERMOUSE },
1da177e4
LT		 1567 { USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU, HID_QUIRK_2WHEEL_MOUSE_HACK_7 },
1568 { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE, HID_QUIRK_2WHEEL_MOUSE_HACK_5 },
1569
6345fdfd 1570 { USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_GAMEPAD, HID_QUIRK_BADPAD },
61cdecd9 1571 { USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_PREDATOR, HID_QUIRK_BADPAD },
1da177e4
LT		 1572 { USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
1573 { USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD },
1574 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1575 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1576 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1577 { USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD },
1578 { USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
1579 { USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
1580
1581 { 0, 0 }
1582};
1583
bf0964dc
MH		 1584/*
1585 * Traverse the supplied list of reports and find the longest
1586 */
1587static void hid_find_max_report(struct hid_device *hid, unsigned int type, int *max)
1588{
1589 struct hid_report *report;
1590 int size;
1591
1592 list_for_each_entry(report, &hid->report_enum[type].report_list, list) {
1593 size = ((report->size - 1) >> 3) + 1;
1594 if (type == HID_INPUT_REPORT && hid->report_enum[type].numbered)
1595 size++;
1596 if (*max < size)
1597 *max = size;
1598 }
1599}
1600
1da177e4
LT		 1601static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
1602{
bf0964dc 1603 if (!(hid->inbuf = usb_buffer_alloc(dev, hid->bufsize, SLAB_ATOMIC, &hid->inbuf_dma)))
1da177e4 1604 return -1;
bf0964dc 1605 if (!(hid->outbuf = usb_buffer_alloc(dev, hid->bufsize, SLAB_ATOMIC, &hid->outbuf_dma)))
1da177e4
LT		 1606 return -1;
1607 if (!(hid->cr = usb_buffer_alloc(dev, sizeof(*(hid->cr)), SLAB_ATOMIC, &hid->cr_dma)))
1608 return -1;
bf0964dc 1609 if (!(hid->ctrlbuf = usb_buffer_alloc(dev, hid->bufsize, SLAB_ATOMIC, &hid->ctrlbuf_dma)))
1da177e4
LT		 1610 return -1;
1611
1612 return 0;
1613}
1614
1615static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
1616{
1617 if (hid->inbuf)
bf0964dc 1618 usb_buffer_free(dev, hid->bufsize, hid->inbuf, hid->inbuf_dma);
1da177e4 1619 if (hid->outbuf)
bf0964dc 1620 usb_buffer_free(dev, hid->bufsize, hid->outbuf, hid->outbuf_dma);
1da177e4
LT		 1621 if (hid->cr)
1622 usb_buffer_free(dev, sizeof(*(hid->cr)), hid->cr, hid->cr_dma);
1623 if (hid->ctrlbuf)
bf0964dc 1624 usb_buffer_free(dev, hid->bufsize, hid->ctrlbuf, hid->ctrlbuf_dma);
1da177e4
LT		 1625}
1626
1627static struct hid_device *usb_hid_configure(struct usb_interface *intf)
1628{
1629 struct usb_host_interface *interface = intf->cur_altsetting;
1630 struct usb_device *dev = interface_to_usbdev (intf);
1631 struct hid_descriptor *hdesc;
1632 struct hid_device *hid;
1633 unsigned quirks = 0, rsize = 0;
c5b7c7c3
DT		 1634 char *rdesc;
1635 int n, len, insize = 0;
1da177e4
LT		 1636
1637 for (n = 0; hid_blacklist[n].idVendor; n++)
1638 if ((hid_blacklist[n].idVendor == le16_to_cpu(dev->descriptor.idVendor)) &&
1639 (hid_blacklist[n].idProduct == le16_to_cpu(dev->descriptor.idProduct)))
1640 quirks = hid_blacklist[n].quirks;
1641
1642 if (quirks & HID_QUIRK_IGNORE)
1643 return NULL;
1644
c5b7c7c3
DT		 1645 if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) &&
1646 (!interface->desc.bNumEndpoints ||
1647 usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
1648 dbg("class descriptor not present\n");
1649 return NULL;
1da177e4
LT		 1650 }
1651
1652 for (n = 0; n < hdesc->bNumDescriptors; n++)
1653 if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
1654 rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
1655
1656 if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
1657 dbg("weird size of report descriptor (%u)", rsize);
1658 return NULL;
1659 }
1660
1661 if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
1662 dbg("couldn't allocate rdesc memory");
1663 return NULL;
1664 }
1665
854561b0
VP		 1666 hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0);
1667
1da177e4
LT		 1668 if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
1669 dbg("reading report descriptor failed");
1670 kfree(rdesc);
1671 return NULL;
1672 }
1673
1674#ifdef DEBUG_DATA
1675 printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
1676 for (n = 0; n < rsize; n++)
1677 printk(" %02x", (unsigned char) rdesc[n]);
1678 printk("\n");
1679#endif
1680
1681 if (!(hid = hid_parse_report(rdesc, n))) {
1682 dbg("parsing report descriptor failed");
1683 kfree(rdesc);
1684 return NULL;
1685 }
1686
1687 kfree(rdesc);
1688 hid->quirks = quirks;
1689
bf0964dc
MH		 1690 hid->bufsize = HID_MIN_BUFFER_SIZE;
1691 hid_find_max_report(hid, HID_INPUT_REPORT, &hid->bufsize);
1692 hid_find_max_report(hid, HID_OUTPUT_REPORT, &hid->bufsize);
1693 hid_find_max_report(hid, HID_FEATURE_REPORT, &hid->bufsize);
1694
1695 if (hid->bufsize > HID_MAX_BUFFER_SIZE)
1696 hid->bufsize = HID_MAX_BUFFER_SIZE;
1697
1698 hid_find_max_report(hid, HID_INPUT_REPORT, &insize);
1699
1700 if (insize > HID_MAX_BUFFER_SIZE)
1701 insize = HID_MAX_BUFFER_SIZE;
1702
1da177e4
LT		 1703 if (hid_alloc_buffers(dev, hid)) {
1704 hid_free_buffers(dev, hid);
1705 goto fail;
1706 }
1707
1708 for (n = 0; n < interface->desc.bNumEndpoints; n++) {
1709
1710 struct usb_endpoint_descriptor *endpoint;
1711 int pipe;
1712 int interval;
1713
1714 endpoint = &interface->endpoint[n].desc;
1715 if ((endpoint->bmAttributes & 3) != 3) /* Not an interrupt endpoint */
1716 continue;
1717
1da177e4 1718 interval = endpoint->bInterval;
1da177e4
LT		 1719
1720 /* Change the polling interval of mice. */
1721 if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0)
1722 interval = hid_mousepoll_interval;
05f091ab 1723
1da177e4
LT		 1724 if (endpoint->bEndpointAddress & USB_DIR_IN) {
1725 if (hid->urbin)
1726 continue;
1727 if (!(hid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
1728 goto fail;
1729 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
bf0964dc 1730 usb_fill_int_urb(hid->urbin, dev, pipe, hid->inbuf, insize,
1da177e4
LT		 1731 hid_irq_in, hid, interval);
1732 hid->urbin->transfer_dma = hid->inbuf_dma;
b375a049 1733 hid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1da177e4
LT		 1734 } else {
1735 if (hid->urbout)
1736 continue;
1737 if (!(hid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
1738 goto fail;
1739 pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
1740 usb_fill_int_urb(hid->urbout, dev, pipe, hid->outbuf, 0,
1741 hid_irq_out, hid, interval);
1742 hid->urbout->transfer_dma = hid->outbuf_dma;
b375a049 1743 hid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1da177e4
LT		 1744 }
1745 }
1746
1747 if (!hid->urbin) {
1748 err("couldn't find an input interrupt endpoint");
1749 goto fail;
1750 }
1751
1752 init_waitqueue_head(&hid->wait);
1753
1754 spin_lock_init(&hid->outlock);
1755 spin_lock_init(&hid->ctrllock);
1756
1757 hid->version = le16_to_cpu(hdesc->bcdHID);
1758 hid->country = hdesc->bCountryCode;
1759 hid->dev = dev;
1760 hid->intf = intf;
1761 hid->ifnum = interface->desc.bInterfaceNumber;
1762
1763 hid->name[0] = 0;
1764
c5b7c7c3
DT		 1765 if (dev->manufacturer)
1766 strlcpy(hid->name, dev->manufacturer, sizeof(hid->name));
1767
1768 if (dev->product) {
1769 if (dev->manufacturer)
1770 strlcat(hid->name, " ", sizeof(hid->name));
1771 strlcat(hid->name, dev->product, sizeof(hid->name));
1772 }
1773
1774 if (!strlen(hid->name))
1775 snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x",
1776 le16_to_cpu(dev->descriptor.idVendor),
1777 le16_to_cpu(dev->descriptor.idProduct));
1da177e4 1778
c5b7c7c3
DT		 1779 usb_make_path(dev, hid->phys, sizeof(hid->phys));
1780 strlcat(hid->phys, "/input", sizeof(hid->phys));
1781 len = strlen(hid->phys);
1782 if (len < sizeof(hid->phys) - 1)
1783 snprintf(hid->phys + len, sizeof(hid->phys) - len,
1784 "%d", intf->altsetting[0].desc.bInterfaceNumber);
1da177e4
LT		 1785
1786 if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
1787 hid->uniq[0] = 0;
1788
1da177e4
LT		 1789 hid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
1790 if (!hid->urbctrl)
1791 goto fail;
c5b7c7c3 1792
1da177e4
LT		 1793 usb_fill_control_urb(hid->urbctrl, dev, 0, (void *) hid->cr,
1794 hid->ctrlbuf, 1, hid_ctrl, hid);
1795 hid->urbctrl->setup_dma = hid->cr_dma;
1796 hid->urbctrl->transfer_dma = hid->ctrlbuf_dma;
b375a049 1797 hid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP);
1da177e4 1798
423e489d
AS		 1799 /* May be needed for some devices */
1800 usb_clear_halt(hid->dev, hid->urbin->pipe);
1801
1da177e4
LT		 1802 return hid;
1803
1804fail:
1805
1806 if (hid->urbin)
1807 usb_free_urb(hid->urbin);
1808 if (hid->urbout)
1809 usb_free_urb(hid->urbout);
1810 if (hid->urbctrl)
1811 usb_free_urb(hid->urbctrl);
1812 hid_free_buffers(dev, hid);
1813 hid_free_device(hid);
1814
1815 return NULL;
1816}
1817
1818static void hid_disconnect(struct usb_interface *intf)
1819{
1820 struct hid_device *hid = usb_get_intfdata (intf);
1821
1822 if (!hid)
1823 return;
1824
1825 usb_set_intfdata(intf, NULL);
1826 usb_kill_urb(hid->urbin);
1827 usb_kill_urb(hid->urbout);
1828 usb_kill_urb(hid->urbctrl);
1829
1830 if (hid->claimed & HID_CLAIMED_INPUT)
1831 hidinput_disconnect(hid);
1832 if (hid->claimed & HID_CLAIMED_HIDDEV)
1833 hiddev_disconnect(hid);
1834
1835 usb_free_urb(hid->urbin);
1836 usb_free_urb(hid->urbctrl);
1837 if (hid->urbout)
1838 usb_free_urb(hid->urbout);
1839
1840 hid_free_buffers(hid->dev, hid);
1841 hid_free_device(hid);
1842}
1843
1844static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
1845{
1846 struct hid_device *hid;
1847 char path[64];
1848 int i;
1849 char *c;
1850
1851 dbg("HID probe called for ifnum %d",
1852 intf->altsetting->desc.bInterfaceNumber);
1853
1854 if (!(hid = usb_hid_configure(intf)))
479f6ea8 1855 return -ENODEV;
1da177e4
LT		 1856
1857 hid_init_reports(hid);
1858 hid_dump_device(hid);
1859
1860 if (!hidinput_connect(hid))
1861 hid->claimed |= HID_CLAIMED_INPUT;
1862 if (!hiddev_connect(hid))
1863 hid->claimed |= HID_CLAIMED_HIDDEV;
1864
1865 usb_set_intfdata(intf, hid);
1866
1867 if (!hid->claimed) {
1868 printk ("HID device not claimed by input or hiddev\n");
1869 hid_disconnect(intf);
479f6ea8 1870 return -ENODEV;
1da177e4
LT		 1871 }
1872
1873 printk(KERN_INFO);
1874
1875 if (hid->claimed & HID_CLAIMED_INPUT)
1876 printk("input");
1877 if (hid->claimed == (HID_CLAIMED_INPUT | HID_CLAIMED_HIDDEV))
1878 printk(",");
1879 if (hid->claimed & HID_CLAIMED_HIDDEV)
1880 printk("hiddev%d", hid->minor);
1881
1882 c = "Device";
1883 for (i = 0; i < hid->maxcollection; i++) {
1884 if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
1885 (hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1886 (hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
1887 c = hid_types[hid->collection[i].usage & 0xffff];
1888 break;
1889 }
1890 }
1891
1892 usb_make_path(interface_to_usbdev(intf), path, 63);
1893
1894 printk(": USB HID v%x.%02x %s [%s] on %s\n",
1895 hid->version >> 8, hid->version & 0xff, c, hid->name, path);
1896
1897 return 0;
1898}
1899
27d72e85 1900static int hid_suspend(struct usb_interface *intf, pm_message_t message)
1da177e4
LT		 1901{
1902 struct hid_device *hid = usb_get_intfdata (intf);
1903
1904 usb_kill_urb(hid->urbin);
1da177e4
LT		 1905 dev_dbg(&intf->dev, "suspend\n");
1906 return 0;
1907}
1908
1909static int hid_resume(struct usb_interface *intf)
1910{
1911 struct hid_device *hid = usb_get_intfdata (intf);
1912 int status;
1913
1da177e4
LT		 1914 if (hid->open)
1915 status = usb_submit_urb(hid->urbin, GFP_NOIO);
1916 else
1917 status = 0;
1918 dev_dbg(&intf->dev, "resume status %d\n", status);
1919 return status;
1920}
1921
1922static struct usb_device_id hid_usb_ids [] = {
1923 { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1924 .bInterfaceClass = USB_INTERFACE_CLASS_HID },
1925 { } /* Terminating entry */
1926};
1927
1928MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1929
1930static struct usb_driver hid_driver = {
1931 .owner = THIS_MODULE,
1932 .name = "usbhid",
1933 .probe = hid_probe,
1934 .disconnect = hid_disconnect,
1935 .suspend = hid_suspend,
1936 .resume = hid_resume,
1937 .id_table = hid_usb_ids,
1938};
1939
1940static int __init hid_init(void)
1941{
1942 int retval;
1943 retval = hiddev_init();
1944 if (retval)
1945 goto hiddev_init_fail;
1946 retval = usb_register(&hid_driver);
1947 if (retval)
1948 goto usb_register_fail;
1949 info(DRIVER_VERSION ":" DRIVER_DESC);
1950
1951 return 0;
1952usb_register_fail:
1953 hiddev_exit();
1954hiddev_init_fail:
1955 return retval;
1956}
1957
1958static void __exit hid_exit(void)
1959{
1960 usb_deregister(&hid_driver);
1961 hiddev_exit();
1962}
1963
1964module_init(hid_init);
1965module_exit(hid_exit);
1966
1967MODULE_AUTHOR(DRIVER_AUTHOR);
1968MODULE_DESCRIPTION(DRIVER_DESC);
1969MODULE_LICENSE(DRIVER_LICENSE);
Linux kernel - Deliverables
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