projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
[libata] build fix after cdb_len move
[deliverable/linux.git] / drivers / usb / input / hid-core.c
1 /*
2 * USB HID support for Linux
3 *
4 * Copyright (c) 1999 Andreas Gal
5 * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
6 * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
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
42 #define DRIVER_VERSION "v2.6"
43 #define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik"
44 #define DRIVER_DESC "USB HID core driver"
45 #define DRIVER_LICENSE "GPL"
46
47 static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
48 "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
49 /*
50 * Module parameters.
51 */
52
53 static unsigned int hid_mousepoll_interval;
54 module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
55 MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
56
57 /*
58 * Register a new report for a device.
59 */
60
61 static 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
91 static 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
119 static 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
168 static 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
183 static 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
196 static 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
214 static 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 */
236 return 0;
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
277 static __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
287 static __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
301 static 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
392 static 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
484 static 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
521 static 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
533 static 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
546 static 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
562 kfree(device->rdesc);
563 kfree(device);
564 }
565
566 /*
567 * Fetch a report description item from the data stream. We support long
568 * items, though they are not used yet.
569 */
570
571 static 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
639 static 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
740 static __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
754 static __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
766 static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
767 {
768 report += (offset >> 5) << 2; offset &= 31;
769 return (le64_to_cpu(get_unaligned((__le64*)report)) >> offset) & ((1ULL << n) - 1);
770 }
771
772 static __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
784 static __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
793 static void hid_process_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, int interrupt, struct pt_regs *regs)
794 {
795 hid_dump_input(usage, value);
796 if (hid->claimed & HID_CLAIMED_INPUT)
797 hidinput_hid_event(hid, field, usage, value, regs);
798 if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt)
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
808 static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, int interrupt, struct pt_regs *regs)
809 {
810 unsigned n;
811 unsigned count = field->report_count;
812 unsigned offset = field->report_offset;
813 unsigned size = field->report_size;
814 __s32 min = field->logical_minimum;
815 __s32 max = field->logical_maximum;
816 __s32 *value;
817
818 if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC)))
819 return;
820
821 for (n = 0; n < count; n++) {
822
823 value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
824 extract(data, offset + n * size, size);
825
826 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
827 && value[n] >= min && value[n] <= max
828 && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
829 goto exit;
830 }
831
832 for (n = 0; n < count; n++) {
833
834 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
835 hid_process_event(hid, field, &field->usage[n], value[n], interrupt, regs);
836 continue;
837 }
838
839 if (field->value[n] >= min && field->value[n] <= max
840 && field->usage[field->value[n] - min].hid
841 && search(value, field->value[n], count))
842 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt, regs);
843
844 if (value[n] >= min && value[n] <= max
845 && field->usage[value[n] - min].hid
846 && search(field->value, value[n], count))
847 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt, regs);
848 }
849
850 memcpy(field->value, value, count * sizeof(__s32));
851 exit:
852 kfree(value);
853 }
854
855 static int hid_input_report(int type, struct urb *urb, int interrupt, struct pt_regs *regs)
856 {
857 struct hid_device *hid = urb->context;
858 struct hid_report_enum *report_enum = hid->report_enum + type;
859 u8 *data = urb->transfer_buffer;
860 int len = urb->actual_length;
861 struct hid_report *report;
862 int n, size;
863
864 if (!len) {
865 dbg("empty report");
866 return -1;
867 }
868
869 #ifdef DEBUG_DATA
870 printk(KERN_DEBUG __FILE__ ": report (size %u) (%snumbered)\n", len, report_enum->numbered ? "" : "un");
871 #endif
872
873 n = 0; /* Normally report number is 0 */
874 if (report_enum->numbered) { /* Device uses numbered reports, data[0] is report number */
875 n = *data++;
876 len--;
877 }
878
879 #ifdef DEBUG_DATA
880 {
881 int i;
882 printk(KERN_DEBUG __FILE__ ": report %d (size %u) = ", n, len);
883 for (i = 0; i < len; i++)
884 printk(" %02x", data[i]);
885 printk("\n");
886 }
887 #endif
888
889 if (!(report = report_enum->report_id_hash[n])) {
890 dbg("undefined report_id %d received", n);
891 return -1;
892 }
893
894 size = ((report->size - 1) >> 3) + 1;
895
896 if (len < size) {
897 dbg("report %d is too short, (%d < %d)", report->id, len, size);
898 memset(data + len, 0, size - len);
899 }
900
901 if (hid->claimed & HID_CLAIMED_HIDDEV)
902 hiddev_report_event(hid, report);
903
904 for (n = 0; n < report->maxfield; n++)
905 hid_input_field(hid, report->field[n], data, interrupt, regs);
906
907 if (hid->claimed & HID_CLAIMED_INPUT)
908 hidinput_report_event(hid, report);
909
910 return 0;
911 }
912
913 /*
914 * Input interrupt completion handler.
915 */
916
917 static void hid_irq_in(struct urb *urb, struct pt_regs *regs)
918 {
919 struct hid_device *hid = urb->context;
920 int status;
921
922 switch (urb->status) {
923 case 0: /* success */
924 hid_input_report(HID_INPUT_REPORT, urb, 1, regs);
925 break;
926 case -ECONNRESET: /* unlink */
927 case -ENOENT:
928 case -EPERM:
929 case -ESHUTDOWN: /* unplug */
930 case -EILSEQ: /* unplug timeout on uhci */
931 return;
932 case -ETIMEDOUT: /* NAK */
933 break;
934 default: /* error */
935 warn("input irq status %d received", urb->status);
936 }
937
938 status = usb_submit_urb(urb, SLAB_ATOMIC);
939 if (status)
940 err("can't resubmit intr, %s-%s/input%d, status %d",
941 hid->dev->bus->bus_name, hid->dev->devpath,
942 hid->ifnum, status);
943 }
944
945 /*
946 * Output the field into the report.
947 */
948
949 static void hid_output_field(struct hid_field *field, __u8 *data)
950 {
951 unsigned count = field->report_count;
952 unsigned offset = field->report_offset;
953 unsigned size = field->report_size;
954 unsigned n;
955
956 for (n = 0; n < count; n++) {
957 if (field->logical_minimum < 0) /* signed values */
958 implement(data, offset + n * size, size, s32ton(field->value[n], size));
959 else /* unsigned values */
960 implement(data, offset + n * size, size, field->value[n]);
961 }
962 }
963
964 /*
965 * Create a report.
966 */
967
968 static void hid_output_report(struct hid_report *report, __u8 *data)
969 {
970 unsigned n;
971
972 if (report->id > 0)
973 *data++ = report->id;
974
975 for (n = 0; n < report->maxfield; n++)
976 hid_output_field(report->field[n], data);
977 }
978
979 /*
980 * Set a field value. The report this field belongs to has to be
981 * created and transferred to the device, to set this value in the
982 * device.
983 */
984
985 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
986 {
987 unsigned size = field->report_size;
988
989 hid_dump_input(field->usage + offset, value);
990
991 if (offset >= field->report_count) {
992 dbg("offset (%d) exceeds report_count (%d)", offset, field->report_count);
993 hid_dump_field(field, 8);
994 return -1;
995 }
996 if (field->logical_minimum < 0) {
997 if (value != snto32(s32ton(value, size), size)) {
998 dbg("value %d is out of range", value);
999 return -1;
1000 }
1001 }
1002 field->value[offset] = value;
1003 return 0;
1004 }
1005
1006 /*
1007 * Find a report field with a specified HID usage.
1008 */
1009
1010 struct hid_field *hid_find_field_by_usage(struct hid_device *hid, __u32 wanted_usage, int type)
1011 {
1012 struct hid_report *report;
1013 int i;
1014
1015 list_for_each_entry(report, &hid->report_enum[type].report_list, list)
1016 for (i = 0; i < report->maxfield; i++)
1017 if (report->field[i]->logical == wanted_usage)
1018 return report->field[i];
1019 return NULL;
1020 }
1021
1022 static int hid_submit_out(struct hid_device *hid)
1023 {
1024 struct hid_report *report;
1025
1026 report = hid->out[hid->outtail];
1027
1028 hid_output_report(report, hid->outbuf);
1029 hid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1030 hid->urbout->dev = hid->dev;
1031
1032 dbg("submitting out urb");
1033
1034 if (usb_submit_urb(hid->urbout, GFP_ATOMIC)) {
1035 err("usb_submit_urb(out) failed");
1036 return -1;
1037 }
1038
1039 return 0;
1040 }
1041
1042 static int hid_submit_ctrl(struct hid_device *hid)
1043 {
1044 struct hid_report *report;
1045 unsigned char dir;
1046 int len;
1047
1048 report = hid->ctrl[hid->ctrltail].report;
1049 dir = hid->ctrl[hid->ctrltail].dir;
1050
1051 len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1052 if (dir == USB_DIR_OUT) {
1053 hid_output_report(report, hid->ctrlbuf);
1054 hid->urbctrl->pipe = usb_sndctrlpipe(hid->dev, 0);
1055 hid->urbctrl->transfer_buffer_length = len;
1056 } else {
1057 int maxpacket, padlen;
1058
1059 hid->urbctrl->pipe = usb_rcvctrlpipe(hid->dev, 0);
1060 maxpacket = usb_maxpacket(hid->dev, hid->urbctrl->pipe, 0);
1061 if (maxpacket > 0) {
1062 padlen = (len + maxpacket - 1) / maxpacket;
1063 padlen *= maxpacket;
1064 if (padlen > hid->bufsize)
1065 padlen = hid->bufsize;
1066 } else
1067 padlen = 0;
1068 hid->urbctrl->transfer_buffer_length = padlen;
1069 }
1070 hid->urbctrl->dev = hid->dev;
1071
1072 hid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
1073 hid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
1074 hid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
1075 hid->cr->wIndex = cpu_to_le16(hid->ifnum);
1076 hid->cr->wLength = cpu_to_le16(len);
1077
1078 dbg("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u",
1079 hid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
1080 hid->cr->wValue, hid->cr->wIndex, hid->cr->wLength);
1081
1082 if (usb_submit_urb(hid->urbctrl, GFP_ATOMIC)) {
1083 err("usb_submit_urb(ctrl) failed");
1084 return -1;
1085 }
1086
1087 return 0;
1088 }
1089
1090 /*
1091 * Output interrupt completion handler.
1092 */
1093
1094 static void hid_irq_out(struct urb *urb, struct pt_regs *regs)
1095 {
1096 struct hid_device *hid = urb->context;
1097 unsigned long flags;
1098 int unplug = 0;
1099
1100 switch (urb->status) {
1101 case 0: /* success */
1102 break;
1103 case -ESHUTDOWN: /* unplug */
1104 case -EILSEQ: /* unplug timeout on uhci */
1105 unplug = 1;
1106 case -ECONNRESET: /* unlink */
1107 case -ENOENT:
1108 break;
1109 default: /* error */
1110 warn("output irq status %d received", urb->status);
1111 }
1112
1113 spin_lock_irqsave(&hid->outlock, flags);
1114
1115 if (unplug)
1116 hid->outtail = hid->outhead;
1117 else
1118 hid->outtail = (hid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
1119
1120 if (hid->outhead != hid->outtail) {
1121 if (hid_submit_out(hid)) {
1122 clear_bit(HID_OUT_RUNNING, &hid->iofl);;
1123 wake_up(&hid->wait);
1124 }
1125 spin_unlock_irqrestore(&hid->outlock, flags);
1126 return;
1127 }
1128
1129 clear_bit(HID_OUT_RUNNING, &hid->iofl);
1130 spin_unlock_irqrestore(&hid->outlock, flags);
1131 wake_up(&hid->wait);
1132 }
1133
1134 /*
1135 * Control pipe completion handler.
1136 */
1137
1138 static void hid_ctrl(struct urb *urb, struct pt_regs *regs)
1139 {
1140 struct hid_device *hid = urb->context;
1141 unsigned long flags;
1142 int unplug = 0;
1143
1144 spin_lock_irqsave(&hid->ctrllock, flags);
1145
1146 switch (urb->status) {
1147 case 0: /* success */
1148 if (hid->ctrl[hid->ctrltail].dir == USB_DIR_IN)
1149 hid_input_report(hid->ctrl[hid->ctrltail].report->type, urb, 0, regs);
1150 break;
1151 case -ESHUTDOWN: /* unplug */
1152 case -EILSEQ: /* unplug timectrl on uhci */
1153 unplug = 1;
1154 case -ECONNRESET: /* unlink */
1155 case -ENOENT:
1156 case -EPIPE: /* report not available */
1157 break;
1158 default: /* error */
1159 warn("ctrl urb status %d received", urb->status);
1160 }
1161
1162 if (unplug)
1163 hid->ctrltail = hid->ctrlhead;
1164 else
1165 hid->ctrltail = (hid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
1166
1167 if (hid->ctrlhead != hid->ctrltail) {
1168 if (hid_submit_ctrl(hid)) {
1169 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1170 wake_up(&hid->wait);
1171 }
1172 spin_unlock_irqrestore(&hid->ctrllock, flags);
1173 return;
1174 }
1175
1176 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1177 spin_unlock_irqrestore(&hid->ctrllock, flags);
1178 wake_up(&hid->wait);
1179 }
1180
1181 void hid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
1182 {
1183 int head;
1184 unsigned long flags;
1185
1186 if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
1187 return;
1188
1189 if (hid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
1190
1191 spin_lock_irqsave(&hid->outlock, flags);
1192
1193 if ((head = (hid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == hid->outtail) {
1194 spin_unlock_irqrestore(&hid->outlock, flags);
1195 warn("output queue full");
1196 return;
1197 }
1198
1199 hid->out[hid->outhead] = report;
1200 hid->outhead = head;
1201
1202 if (!test_and_set_bit(HID_OUT_RUNNING, &hid->iofl))
1203 if (hid_submit_out(hid))
1204 clear_bit(HID_OUT_RUNNING, &hid->iofl);
1205
1206 spin_unlock_irqrestore(&hid->outlock, flags);
1207 return;
1208 }
1209
1210 spin_lock_irqsave(&hid->ctrllock, flags);
1211
1212 if ((head = (hid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == hid->ctrltail) {
1213 spin_unlock_irqrestore(&hid->ctrllock, flags);
1214 warn("control queue full");
1215 return;
1216 }
1217
1218 hid->ctrl[hid->ctrlhead].report = report;
1219 hid->ctrl[hid->ctrlhead].dir = dir;
1220 hid->ctrlhead = head;
1221
1222 if (!test_and_set_bit(HID_CTRL_RUNNING, &hid->iofl))
1223 if (hid_submit_ctrl(hid))
1224 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1225
1226 spin_unlock_irqrestore(&hid->ctrllock, flags);
1227 }
1228
1229 int hid_wait_io(struct hid_device *hid)
1230 {
1231 if (!wait_event_timeout(hid->wait, (!test_bit(HID_CTRL_RUNNING, &hid->iofl) &&
1232 !test_bit(HID_OUT_RUNNING, &hid->iofl)),
1233 10*HZ)) {
1234 dbg("timeout waiting for ctrl or out queue to clear");
1235 return -1;
1236 }
1237
1238 return 0;
1239 }
1240
1241 static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle)
1242 {
1243 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1244 HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (idle << 8) | report,
1245 ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT);
1246 }
1247
1248 static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
1249 unsigned char type, void *buf, int size)
1250 {
1251 int result, retries = 4;
1252
1253 memset(buf,0,size); // Make sure we parse really received data
1254
1255 do {
1256 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
1257 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
1258 (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT);
1259 retries--;
1260 } while (result < size && retries);
1261 return result;
1262 }
1263
1264 int hid_open(struct hid_device *hid)
1265 {
1266 if (hid->open++)
1267 return 0;
1268
1269 hid->urbin->dev = hid->dev;
1270
1271 if (usb_submit_urb(hid->urbin, GFP_KERNEL))
1272 return -EIO;
1273
1274 return 0;
1275 }
1276
1277 void hid_close(struct hid_device *hid)
1278 {
1279 if (!--hid->open)
1280 usb_kill_urb(hid->urbin);
1281 }
1282
1283 /*
1284 * Initialize all reports
1285 */
1286
1287 void hid_init_reports(struct hid_device *hid)
1288 {
1289 struct hid_report *report;
1290 int err, ret;
1291
1292 list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list)
1293 hid_submit_report(hid, report, USB_DIR_IN);
1294
1295 list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list)
1296 hid_submit_report(hid, report, USB_DIR_IN);
1297
1298 err = 0;
1299 ret = hid_wait_io(hid);
1300 while (ret) {
1301 err |= ret;
1302 if (test_bit(HID_CTRL_RUNNING, &hid->iofl))
1303 usb_kill_urb(hid->urbctrl);
1304 if (test_bit(HID_OUT_RUNNING, &hid->iofl))
1305 usb_kill_urb(hid->urbout);
1306 ret = hid_wait_io(hid);
1307 }
1308
1309 if (err)
1310 warn("timeout initializing reports");
1311 }
1312
1313 #define USB_VENDOR_ID_WACOM 0x056a
1314 #define USB_DEVICE_ID_WACOM_PENPARTNER 0x0000
1315 #define USB_DEVICE_ID_WACOM_GRAPHIRE 0x0010
1316 #define USB_DEVICE_ID_WACOM_INTUOS 0x0020
1317 #define USB_DEVICE_ID_WACOM_PL 0x0030
1318 #define USB_DEVICE_ID_WACOM_INTUOS2 0x0040
1319 #define USB_DEVICE_ID_WACOM_VOLITO 0x0060
1320 #define USB_DEVICE_ID_WACOM_PTU 0x0003
1321 #define USB_DEVICE_ID_WACOM_INTUOS3 0x00B0
1322 #define USB_DEVICE_ID_WACOM_CINTIQ 0x003F
1323 #define USB_DEVICE_ID_WACOM_DTF 0x00C0
1324
1325 #define USB_VENDOR_ID_ACECAD 0x0460
1326 #define USB_DEVICE_ID_ACECAD_FLAIR 0x0004
1327 #define USB_DEVICE_ID_ACECAD_302 0x0008
1328
1329 #define USB_VENDOR_ID_KBGEAR 0x084e
1330 #define USB_DEVICE_ID_KBGEAR_JAMSTUDIO 0x1001
1331
1332 #define USB_VENDOR_ID_AIPTEK 0x08ca
1333 #define USB_DEVICE_ID_AIPTEK_01 0x0001
1334 #define USB_DEVICE_ID_AIPTEK_10 0x0010
1335 #define USB_DEVICE_ID_AIPTEK_20 0x0020
1336 #define USB_DEVICE_ID_AIPTEK_21 0x0021
1337 #define USB_DEVICE_ID_AIPTEK_22 0x0022
1338 #define USB_DEVICE_ID_AIPTEK_23 0x0023
1339 #define USB_DEVICE_ID_AIPTEK_24 0x0024
1340
1341 #define USB_VENDOR_ID_GRIFFIN 0x077d
1342 #define USB_DEVICE_ID_POWERMATE 0x0410
1343 #define USB_DEVICE_ID_SOUNDKNOB 0x04AA
1344
1345 #define USB_VENDOR_ID_ATEN 0x0557
1346 #define USB_DEVICE_ID_ATEN_UC100KM 0x2004
1347 #define USB_DEVICE_ID_ATEN_CS124U 0x2202
1348 #define USB_DEVICE_ID_ATEN_2PORTKVM 0x2204
1349 #define USB_DEVICE_ID_ATEN_4PORTKVM 0x2205
1350 #define USB_DEVICE_ID_ATEN_4PORTKVMC 0x2208
1351
1352 #define USB_VENDOR_ID_TOPMAX 0x0663
1353 #define USB_DEVICE_ID_TOPMAX_COBRAPAD 0x0103
1354
1355 #define USB_VENDOR_ID_HAPP 0x078b
1356 #define USB_DEVICE_ID_UGCI_DRIVING 0x0010
1357 #define USB_DEVICE_ID_UGCI_FLYING 0x0020
1358 #define USB_DEVICE_ID_UGCI_FIGHTING 0x0030
1359
1360 #define USB_VENDOR_ID_MGE 0x0463
1361 #define USB_DEVICE_ID_MGE_UPS 0xffff
1362 #define USB_DEVICE_ID_MGE_UPS1 0x0001
1363
1364 #define USB_VENDOR_ID_ONTRAK 0x0a07
1365 #define USB_DEVICE_ID_ONTRAK_ADU100 0x0064
1366
1367 #define USB_VENDOR_ID_TANGTOP 0x0d3d
1368 #define USB_DEVICE_ID_TANGTOP_USBPS2 0x0001
1369
1370 #define USB_VENDOR_ID_ESSENTIAL_REALITY 0x0d7f
1371 #define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100
1372
1373 #define USB_VENDOR_ID_A4TECH 0x09da
1374 #define USB_DEVICE_ID_A4TECH_WCP32PU 0x0006
1375
1376 #define USB_VENDOR_ID_AASHIMA 0x06d6
1377 #define USB_DEVICE_ID_AASHIMA_GAMEPAD 0x0025
1378 #define USB_DEVICE_ID_AASHIMA_PREDATOR 0x0026
1379
1380 #define USB_VENDOR_ID_CYPRESS 0x04b4
1381 #define USB_DEVICE_ID_CYPRESS_MOUSE 0x0001
1382 #define USB_DEVICE_ID_CYPRESS_HIDCOM 0x5500
1383 #define USB_DEVICE_ID_CYPRESS_ULTRAMOUSE 0x7417
1384
1385 #define USB_VENDOR_ID_BERKSHIRE 0x0c98
1386 #define USB_DEVICE_ID_BERKSHIRE_PCWD 0x1140
1387
1388 #define USB_VENDOR_ID_ALPS 0x0433
1389 #define USB_DEVICE_ID_IBM_GAMEPAD 0x1101
1390
1391 #define USB_VENDOR_ID_SAITEK 0x06a3
1392 #define USB_DEVICE_ID_SAITEK_RUMBLEPAD 0xff17
1393
1394 #define USB_VENDOR_ID_NEC 0x073e
1395 #define USB_DEVICE_ID_NEC_USB_GAME_PAD 0x0301
1396
1397 #define USB_VENDOR_ID_CHIC 0x05fe
1398 #define USB_DEVICE_ID_CHIC_GAMEPAD 0x0014
1399
1400 #define USB_VENDOR_ID_GLAB 0x06c2
1401 #define USB_DEVICE_ID_4_PHIDGETSERVO_30 0x0038
1402 #define USB_DEVICE_ID_1_PHIDGETSERVO_30 0x0039
1403 #define USB_DEVICE_ID_8_8_8_IF_KIT 0x0045
1404 #define USB_DEVICE_ID_0_0_4_IF_KIT 0x0040
1405 #define USB_DEVICE_ID_0_8_8_IF_KIT 0x0053
1406
1407 #define USB_VENDOR_ID_WISEGROUP 0x0925
1408 #define USB_DEVICE_ID_1_PHIDGETSERVO_20 0x8101
1409 #define USB_DEVICE_ID_4_PHIDGETSERVO_20 0x8104
1410
1411 #define USB_VENDOR_ID_CODEMERCS 0x07c0
1412 #define USB_DEVICE_ID_CODEMERCS_IOW40 0x1500
1413 #define USB_DEVICE_ID_CODEMERCS_IOW24 0x1501
1414 #define USB_DEVICE_ID_CODEMERCS_IOW48 0x1502
1415 #define USB_DEVICE_ID_CODEMERCS_IOW28 0x1503
1416
1417 #define USB_VENDOR_ID_DELORME 0x1163
1418 #define USB_DEVICE_ID_DELORME_EARTHMATE 0x0100
1419 #define USB_DEVICE_ID_DELORME_EM_LT20 0x0200
1420
1421 #define USB_VENDOR_ID_MCC 0x09db
1422 #define USB_DEVICE_ID_MCC_PMD1024LS 0x0076
1423 #define USB_DEVICE_ID_MCC_PMD1208LS 0x007a
1424
1425 #define USB_VENDOR_ID_CHICONY 0x04f2
1426 #define USB_DEVICE_ID_CHICONY_USBHUB_KB 0x0100
1427
1428 #define USB_VENDOR_ID_BTC 0x046e
1429 #define USB_DEVICE_ID_BTC_KEYBOARD 0x5303
1430
1431 #define USB_VENDOR_ID_VERNIER 0x08f7
1432 #define USB_DEVICE_ID_VERNIER_LABPRO 0x0001
1433 #define USB_DEVICE_ID_VERNIER_GOTEMP 0x0002
1434 #define USB_DEVICE_ID_VERNIER_SKIP 0x0003
1435 #define USB_DEVICE_ID_VERNIER_CYCLOPS 0x0004
1436
1437 #define USB_VENDOR_ID_LD 0x0f11
1438 #define USB_DEVICE_ID_CASSY 0x1000
1439 #define USB_DEVICE_ID_POCKETCASSY 0x1010
1440 #define USB_DEVICE_ID_MOBILECASSY 0x1020
1441 #define USB_DEVICE_ID_JWM 0x1080
1442 #define USB_DEVICE_ID_DMMP 0x1081
1443 #define USB_DEVICE_ID_UMIP 0x1090
1444 #define USB_DEVICE_ID_VIDEOCOM 0x1200
1445 #define USB_DEVICE_ID_COM3LAB 0x2000
1446 #define USB_DEVICE_ID_TELEPORT 0x2010
1447 #define USB_DEVICE_ID_NETWORKANALYSER 0x2020
1448 #define USB_DEVICE_ID_POWERCONTROL 0x2030
1449
1450 #define USB_VENDOR_ID_APPLE 0x05ac
1451 #define USB_DEVICE_ID_APPLE_POWERMOUSE 0x0304
1452
1453 #define USB_VENDOR_ID_CHERRY 0x046a
1454 #define USB_DEVICE_ID_CHERRY_CYMOTION 0x0023
1455
1456 #define USB_VENDOR_ID_HP 0x03f0
1457 #define USB_DEVICE_ID_HP_USBHUB_KB 0x020c
1458
1459 /*
1460 * Alphabetically sorted blacklist by quirk type.
1461 */
1462
1463 static const 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_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW48, HID_QUIRK_IGNORE },
1480 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW28, HID_QUIRK_IGNORE },
1481 { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM, HID_QUIRK_IGNORE },
1482 { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE, HID_QUIRK_IGNORE },
1483 { USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE, HID_QUIRK_IGNORE },
1484 { USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20, HID_QUIRK_IGNORE },
1485 { USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5, HID_QUIRK_IGNORE },
1486 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1487 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1488 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT, HID_QUIRK_IGNORE },
1489 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT, HID_QUIRK_IGNORE },
1490 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT, HID_QUIRK_IGNORE },
1491 { USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE, HID_QUIRK_IGNORE },
1492 { USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB, HID_QUIRK_IGNORE },
1493 { USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO, HID_QUIRK_IGNORE },
1494 { USB_VENDOR_ID_LD, USB_DEVICE_ID_CASSY, HID_QUIRK_IGNORE },
1495 { USB_VENDOR_ID_LD, USB_DEVICE_ID_POCKETCASSY, HID_QUIRK_IGNORE },
1496 { USB_VENDOR_ID_LD, USB_DEVICE_ID_MOBILECASSY, HID_QUIRK_IGNORE },
1497 { USB_VENDOR_ID_LD, USB_DEVICE_ID_JWM, HID_QUIRK_IGNORE },
1498 { USB_VENDOR_ID_LD, USB_DEVICE_ID_DMMP, HID_QUIRK_IGNORE },
1499 { USB_VENDOR_ID_LD, USB_DEVICE_ID_UMIP, HID_QUIRK_IGNORE },
1500 { USB_VENDOR_ID_LD, USB_DEVICE_ID_VIDEOCOM, HID_QUIRK_IGNORE },
1501 { USB_VENDOR_ID_LD, USB_DEVICE_ID_COM3LAB, HID_QUIRK_IGNORE },
1502 { USB_VENDOR_ID_LD, USB_DEVICE_ID_TELEPORT, HID_QUIRK_IGNORE },
1503 { USB_VENDOR_ID_LD, USB_DEVICE_ID_NETWORKANALYSER, HID_QUIRK_IGNORE },
1504 { USB_VENDOR_ID_LD, USB_DEVICE_ID_POWERCONTROL, HID_QUIRK_IGNORE },
1505 { USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS, HID_QUIRK_IGNORE },
1506 { USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS, HID_QUIRK_IGNORE },
1507 { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_IGNORE },
1508 { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1, HID_QUIRK_IGNORE },
1509 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100, HID_QUIRK_IGNORE },
1510 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100, HID_QUIRK_IGNORE },
1511 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200, HID_QUIRK_IGNORE },
1512 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300, HID_QUIRK_IGNORE },
1513 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400, HID_QUIRK_IGNORE },
1514 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500, HID_QUIRK_IGNORE },
1515 { USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO, HID_QUIRK_IGNORE },
1516 { USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP, HID_QUIRK_IGNORE },
1517 { USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP, HID_QUIRK_IGNORE },
1518 { USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS, HID_QUIRK_IGNORE },
1519 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PENPARTNER, HID_QUIRK_IGNORE },
1520 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE, HID_QUIRK_IGNORE },
1521 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 1, HID_QUIRK_IGNORE },
1522 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 2, HID_QUIRK_IGNORE },
1523 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 3, HID_QUIRK_IGNORE },
1524 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 4, HID_QUIRK_IGNORE },
1525 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS, HID_QUIRK_IGNORE },
1526 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 1, HID_QUIRK_IGNORE },
1527 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 2, HID_QUIRK_IGNORE },
1528 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 3, HID_QUIRK_IGNORE },
1529 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 4, HID_QUIRK_IGNORE },
1530 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL, HID_QUIRK_IGNORE },
1531 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 1, HID_QUIRK_IGNORE },
1532 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 2, HID_QUIRK_IGNORE },
1533 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 3, HID_QUIRK_IGNORE },
1534 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 4, HID_QUIRK_IGNORE },
1535 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 5, HID_QUIRK_IGNORE },
1536 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 7, HID_QUIRK_IGNORE },
1537 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 8, HID_QUIRK_IGNORE },
1538 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 9, HID_QUIRK_IGNORE },
1539 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 1, HID_QUIRK_IGNORE },
1540 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 2, HID_QUIRK_IGNORE },
1541 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 3, HID_QUIRK_IGNORE },
1542 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 4, HID_QUIRK_IGNORE },
1543 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 5, HID_QUIRK_IGNORE },
1544 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 7, HID_QUIRK_IGNORE },
1545 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO, HID_QUIRK_IGNORE },
1546 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO + 1, HID_QUIRK_IGNORE },
1547 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO + 2, HID_QUIRK_IGNORE },
1548 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO + 3, HID_QUIRK_IGNORE },
1549 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO + 4, HID_QUIRK_IGNORE },
1550 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 5, HID_QUIRK_IGNORE },
1551 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 6, HID_QUIRK_IGNORE },
1552 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PTU, HID_QUIRK_IGNORE },
1553 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3, HID_QUIRK_IGNORE },
1554 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3 + 1, HID_QUIRK_IGNORE },
1555 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3 + 2, HID_QUIRK_IGNORE },
1556 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3 + 5, HID_QUIRK_IGNORE },
1557 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_CINTIQ, HID_QUIRK_IGNORE },
1558 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_DTF, HID_QUIRK_IGNORE },
1559 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1560 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1561
1562 { USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR, HID_QUIRK_IGNORE },
1563 { USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302, HID_QUIRK_IGNORE },
1564
1565 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
1566 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
1567 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
1568 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
1569 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
1570 { USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_KEYBOARD, HID_QUIRK_NOGET},
1571 { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_USBHUB_KB, HID_QUIRK_NOGET},
1572 { USB_VENDOR_ID_HP, USB_DEVICE_ID_HP_USBHUB_KB, HID_QUIRK_NOGET },
1573 { USB_VENDOR_ID_TANGTOP, USB_DEVICE_ID_TANGTOP_USBPS2, HID_QUIRK_NOGET },
1574
1575 { USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_POWERMOUSE, HID_QUIRK_2WHEEL_POWERMOUSE },
1576 { USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU, HID_QUIRK_2WHEEL_MOUSE_HACK_7 },
1577 { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE, HID_QUIRK_2WHEEL_MOUSE_HACK_5 },
1578
1579 { USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_GAMEPAD, HID_QUIRK_BADPAD },
1580 { USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_PREDATOR, HID_QUIRK_BADPAD },
1581 { USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
1582 { USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD },
1583 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1584 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1585 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1586 { USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD },
1587 { USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
1588 { USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
1589
1590 { USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION, HID_QUIRK_CYMOTION },
1591
1592 { USB_VENDOR_ID_APPLE, 0x020E, HID_QUIRK_POWERBOOK_HAS_FN },
1593 { USB_VENDOR_ID_APPLE, 0x020F, HID_QUIRK_POWERBOOK_HAS_FN },
1594 { USB_VENDOR_ID_APPLE, 0x0214, HID_QUIRK_POWERBOOK_HAS_FN },
1595 { USB_VENDOR_ID_APPLE, 0x0215, HID_QUIRK_POWERBOOK_HAS_FN },
1596 { USB_VENDOR_ID_APPLE, 0x0216, HID_QUIRK_POWERBOOK_HAS_FN },
1597 { USB_VENDOR_ID_APPLE, 0x030A, HID_QUIRK_POWERBOOK_HAS_FN },
1598 { USB_VENDOR_ID_APPLE, 0x030B, HID_QUIRK_POWERBOOK_HAS_FN },
1599
1600 { 0, 0 }
1601 };
1602
1603 /*
1604 * Traverse the supplied list of reports and find the longest
1605 */
1606 static void hid_find_max_report(struct hid_device *hid, unsigned int type, int *max)
1607 {
1608 struct hid_report *report;
1609 int size;
1610
1611 list_for_each_entry(report, &hid->report_enum[type].report_list, list) {
1612 size = ((report->size - 1) >> 3) + 1;
1613 if (type == HID_INPUT_REPORT && hid->report_enum[type].numbered)
1614 size++;
1615 if (*max < size)
1616 *max = size;
1617 }
1618 }
1619
1620 static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
1621 {
1622 if (!(hid->inbuf = usb_buffer_alloc(dev, hid->bufsize, SLAB_ATOMIC, &hid->inbuf_dma)))
1623 return -1;
1624 if (!(hid->outbuf = usb_buffer_alloc(dev, hid->bufsize, SLAB_ATOMIC, &hid->outbuf_dma)))
1625 return -1;
1626 if (!(hid->cr = usb_buffer_alloc(dev, sizeof(*(hid->cr)), SLAB_ATOMIC, &hid->cr_dma)))
1627 return -1;
1628 if (!(hid->ctrlbuf = usb_buffer_alloc(dev, hid->bufsize, SLAB_ATOMIC, &hid->ctrlbuf_dma)))
1629 return -1;
1630
1631 return 0;
1632 }
1633
1634 static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
1635 {
1636 if (hid->inbuf)
1637 usb_buffer_free(dev, hid->bufsize, hid->inbuf, hid->inbuf_dma);
1638 if (hid->outbuf)
1639 usb_buffer_free(dev, hid->bufsize, hid->outbuf, hid->outbuf_dma);
1640 if (hid->cr)
1641 usb_buffer_free(dev, sizeof(*(hid->cr)), hid->cr, hid->cr_dma);
1642 if (hid->ctrlbuf)
1643 usb_buffer_free(dev, hid->bufsize, hid->ctrlbuf, hid->ctrlbuf_dma);
1644 }
1645
1646 /*
1647 * Cherry Cymotion keyboard have an invalid HID report descriptor,
1648 * that needs fixing before we can parse it.
1649 */
1650
1651 static void hid_fixup_cymotion_descriptor(char *rdesc, int rsize)
1652 {
1653 if (rsize >= 17 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {
1654 info("Fixing up Cherry Cymotion report descriptor");
1655 rdesc[11] = rdesc[16] = 0xff;
1656 rdesc[12] = rdesc[17] = 0x03;
1657 }
1658 }
1659
1660 static struct hid_device *usb_hid_configure(struct usb_interface *intf)
1661 {
1662 struct usb_host_interface *interface = intf->cur_altsetting;
1663 struct usb_device *dev = interface_to_usbdev (intf);
1664 struct hid_descriptor *hdesc;
1665 struct hid_device *hid;
1666 unsigned quirks = 0, rsize = 0;
1667 char *rdesc;
1668 int n, len, insize = 0;
1669
1670 for (n = 0; hid_blacklist[n].idVendor; n++)
1671 if ((hid_blacklist[n].idVendor == le16_to_cpu(dev->descriptor.idVendor)) &&
1672 (hid_blacklist[n].idProduct == le16_to_cpu(dev->descriptor.idProduct)))
1673 quirks = hid_blacklist[n].quirks;
1674
1675 if (quirks & HID_QUIRK_IGNORE)
1676 return NULL;
1677
1678 if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) &&
1679 (!interface->desc.bNumEndpoints ||
1680 usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
1681 dbg("class descriptor not present\n");
1682 return NULL;
1683 }
1684
1685 for (n = 0; n < hdesc->bNumDescriptors; n++)
1686 if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
1687 rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
1688
1689 if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
1690 dbg("weird size of report descriptor (%u)", rsize);
1691 return NULL;
1692 }
1693
1694 if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
1695 dbg("couldn't allocate rdesc memory");
1696 return NULL;
1697 }
1698
1699 hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0);
1700
1701 if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
1702 dbg("reading report descriptor failed");
1703 kfree(rdesc);
1704 return NULL;
1705 }
1706
1707 if ((quirks & HID_QUIRK_CYMOTION))
1708 hid_fixup_cymotion_descriptor(rdesc, rsize);
1709
1710 #ifdef DEBUG_DATA
1711 printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
1712 for (n = 0; n < rsize; n++)
1713 printk(" %02x", (unsigned char) rdesc[n]);
1714 printk("\n");
1715 #endif
1716
1717 if (!(hid = hid_parse_report(rdesc, n))) {
1718 dbg("parsing report descriptor failed");
1719 kfree(rdesc);
1720 return NULL;
1721 }
1722
1723 kfree(rdesc);
1724 hid->quirks = quirks;
1725
1726 hid->bufsize = HID_MIN_BUFFER_SIZE;
1727 hid_find_max_report(hid, HID_INPUT_REPORT, &hid->bufsize);
1728 hid_find_max_report(hid, HID_OUTPUT_REPORT, &hid->bufsize);
1729 hid_find_max_report(hid, HID_FEATURE_REPORT, &hid->bufsize);
1730
1731 if (hid->bufsize > HID_MAX_BUFFER_SIZE)
1732 hid->bufsize = HID_MAX_BUFFER_SIZE;
1733
1734 hid_find_max_report(hid, HID_INPUT_REPORT, &insize);
1735
1736 if (insize > HID_MAX_BUFFER_SIZE)
1737 insize = HID_MAX_BUFFER_SIZE;
1738
1739 if (hid_alloc_buffers(dev, hid)) {
1740 hid_free_buffers(dev, hid);
1741 goto fail;
1742 }
1743
1744 for (n = 0; n < interface->desc.bNumEndpoints; n++) {
1745
1746 struct usb_endpoint_descriptor *endpoint;
1747 int pipe;
1748 int interval;
1749
1750 endpoint = &interface->endpoint[n].desc;
1751 if ((endpoint->bmAttributes & 3) != 3) /* Not an interrupt endpoint */
1752 continue;
1753
1754 interval = endpoint->bInterval;
1755
1756 /* Change the polling interval of mice. */
1757 if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0)
1758 interval = hid_mousepoll_interval;
1759
1760 if (endpoint->bEndpointAddress & USB_DIR_IN) {
1761 if (hid->urbin)
1762 continue;
1763 if (!(hid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
1764 goto fail;
1765 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
1766 usb_fill_int_urb(hid->urbin, dev, pipe, hid->inbuf, insize,
1767 hid_irq_in, hid, interval);
1768 hid->urbin->transfer_dma = hid->inbuf_dma;
1769 hid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1770 } else {
1771 if (hid->urbout)
1772 continue;
1773 if (!(hid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
1774 goto fail;
1775 pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
1776 usb_fill_int_urb(hid->urbout, dev, pipe, hid->outbuf, 0,
1777 hid_irq_out, hid, interval);
1778 hid->urbout->transfer_dma = hid->outbuf_dma;
1779 hid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1780 }
1781 }
1782
1783 if (!hid->urbin) {
1784 err("couldn't find an input interrupt endpoint");
1785 goto fail;
1786 }
1787
1788 init_waitqueue_head(&hid->wait);
1789
1790 spin_lock_init(&hid->outlock);
1791 spin_lock_init(&hid->ctrllock);
1792
1793 hid->version = le16_to_cpu(hdesc->bcdHID);
1794 hid->country = hdesc->bCountryCode;
1795 hid->dev = dev;
1796 hid->intf = intf;
1797 hid->ifnum = interface->desc.bInterfaceNumber;
1798
1799 hid->name[0] = 0;
1800
1801 if (dev->manufacturer)
1802 strlcpy(hid->name, dev->manufacturer, sizeof(hid->name));
1803
1804 if (dev->product) {
1805 if (dev->manufacturer)
1806 strlcat(hid->name, " ", sizeof(hid->name));
1807 strlcat(hid->name, dev->product, sizeof(hid->name));
1808 }
1809
1810 if (!strlen(hid->name))
1811 snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x",
1812 le16_to_cpu(dev->descriptor.idVendor),
1813 le16_to_cpu(dev->descriptor.idProduct));
1814
1815 usb_make_path(dev, hid->phys, sizeof(hid->phys));
1816 strlcat(hid->phys, "/input", sizeof(hid->phys));
1817 len = strlen(hid->phys);
1818 if (len < sizeof(hid->phys) - 1)
1819 snprintf(hid->phys + len, sizeof(hid->phys) - len,
1820 "%d", intf->altsetting[0].desc.bInterfaceNumber);
1821
1822 if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
1823 hid->uniq[0] = 0;
1824
1825 hid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
1826 if (!hid->urbctrl)
1827 goto fail;
1828
1829 usb_fill_control_urb(hid->urbctrl, dev, 0, (void *) hid->cr,
1830 hid->ctrlbuf, 1, hid_ctrl, hid);
1831 hid->urbctrl->setup_dma = hid->cr_dma;
1832 hid->urbctrl->transfer_dma = hid->ctrlbuf_dma;
1833 hid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP);
1834
1835 return hid;
1836
1837 fail:
1838
1839 if (hid->urbin)
1840 usb_free_urb(hid->urbin);
1841 if (hid->urbout)
1842 usb_free_urb(hid->urbout);
1843 if (hid->urbctrl)
1844 usb_free_urb(hid->urbctrl);
1845 hid_free_buffers(dev, hid);
1846 hid_free_device(hid);
1847
1848 return NULL;
1849 }
1850
1851 static void hid_disconnect(struct usb_interface *intf)
1852 {
1853 struct hid_device *hid = usb_get_intfdata (intf);
1854
1855 if (!hid)
1856 return;
1857
1858 usb_set_intfdata(intf, NULL);
1859 usb_kill_urb(hid->urbin);
1860 usb_kill_urb(hid->urbout);
1861 usb_kill_urb(hid->urbctrl);
1862
1863 if (hid->claimed & HID_CLAIMED_INPUT)
1864 hidinput_disconnect(hid);
1865 if (hid->claimed & HID_CLAIMED_HIDDEV)
1866 hiddev_disconnect(hid);
1867
1868 usb_free_urb(hid->urbin);
1869 usb_free_urb(hid->urbctrl);
1870 if (hid->urbout)
1871 usb_free_urb(hid->urbout);
1872
1873 hid_free_buffers(hid->dev, hid);
1874 hid_free_device(hid);
1875 }
1876
1877 static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
1878 {
1879 struct hid_device *hid;
1880 char path[64];
1881 int i;
1882 char *c;
1883
1884 dbg("HID probe called for ifnum %d",
1885 intf->altsetting->desc.bInterfaceNumber);
1886
1887 if (!(hid = usb_hid_configure(intf)))
1888 return -ENODEV;
1889
1890 hid_init_reports(hid);
1891 hid_dump_device(hid);
1892
1893 if (!hidinput_connect(hid))
1894 hid->claimed |= HID_CLAIMED_INPUT;
1895 if (!hiddev_connect(hid))
1896 hid->claimed |= HID_CLAIMED_HIDDEV;
1897
1898 usb_set_intfdata(intf, hid);
1899
1900 if (!hid->claimed) {
1901 printk ("HID device not claimed by input or hiddev\n");
1902 hid_disconnect(intf);
1903 return -ENODEV;
1904 }
1905
1906 printk(KERN_INFO);
1907
1908 if (hid->claimed & HID_CLAIMED_INPUT)
1909 printk("input");
1910 if (hid->claimed == (HID_CLAIMED_INPUT | HID_CLAIMED_HIDDEV))
1911 printk(",");
1912 if (hid->claimed & HID_CLAIMED_HIDDEV)
1913 printk("hiddev%d", hid->minor);
1914
1915 c = "Device";
1916 for (i = 0; i < hid->maxcollection; i++) {
1917 if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
1918 (hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1919 (hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
1920 c = hid_types[hid->collection[i].usage & 0xffff];
1921 break;
1922 }
1923 }
1924
1925 usb_make_path(interface_to_usbdev(intf), path, 63);
1926
1927 printk(": USB HID v%x.%02x %s [%s] on %s\n",
1928 hid->version >> 8, hid->version & 0xff, c, hid->name, path);
1929
1930 return 0;
1931 }
1932
1933 static int hid_suspend(struct usb_interface *intf, pm_message_t message)
1934 {
1935 struct hid_device *hid = usb_get_intfdata (intf);
1936
1937 usb_kill_urb(hid->urbin);
1938 dev_dbg(&intf->dev, "suspend\n");
1939 return 0;
1940 }
1941
1942 static int hid_resume(struct usb_interface *intf)
1943 {
1944 struct hid_device *hid = usb_get_intfdata (intf);
1945 int status;
1946
1947 if (hid->open)
1948 status = usb_submit_urb(hid->urbin, GFP_NOIO);
1949 else
1950 status = 0;
1951 dev_dbg(&intf->dev, "resume status %d\n", status);
1952 return status;
1953 }
1954
1955 static struct usb_device_id hid_usb_ids [] = {
1956 { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1957 .bInterfaceClass = USB_INTERFACE_CLASS_HID },
1958 { } /* Terminating entry */
1959 };
1960
1961 MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1962
1963 static struct usb_driver hid_driver = {
1964 .name = "usbhid",
1965 .probe = hid_probe,
1966 .disconnect = hid_disconnect,
1967 .suspend = hid_suspend,
1968 .resume = hid_resume,
1969 .id_table = hid_usb_ids,
1970 };
1971
1972 static int __init hid_init(void)
1973 {
1974 int retval;
1975 retval = hiddev_init();
1976 if (retval)
1977 goto hiddev_init_fail;
1978 retval = usb_register(&hid_driver);
1979 if (retval)
1980 goto usb_register_fail;
1981 info(DRIVER_VERSION ":" DRIVER_DESC);
1982
1983 return 0;
1984 usb_register_fail:
1985 hiddev_exit();
1986 hiddev_init_fail:
1987 return retval;
1988 }
1989
1990 static void __exit hid_exit(void)
1991 {
1992 usb_deregister(&hid_driver);
1993 hiddev_exit();
1994 }
1995
1996 module_init(hid_init);
1997 module_exit(hid_exit);
1998
1999 MODULE_AUTHOR(DRIVER_AUTHOR);
2000 MODULE_DESCRIPTION(DRIVER_DESC);
2001 MODULE_LICENSE(DRIVER_LICENSE);
Linux kernel - Deliverables
This page took 0.079267 seconds and 5 git commands to generate.