1 /*
2 * USB HID support for Linux
3 *
4 * Copyright (c) 1999 Andreas Gal
5 * Copyright (c) 2000-2001 Vojtech Pavlik <vojtech@suse.cz>
6 */
7
8 /*
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
12 * any later version.
13 */
14
15 #include <linux/module.h>
16 #include <linux/slab.h>
17 #include <linux/init.h>
18 #include <linux/kernel.h>
19 #include <linux/sched.h>
20 #include <linux/list.h>
21 #include <linux/mm.h>
22 #include <linux/smp_lock.h>
23 #include <linux/spinlock.h>
24 #include <asm/unaligned.h>
25 #include <asm/byteorder.h>
26 #include <linux/input.h>
27
28 #undef DEBUG
29 #undef DEBUG_DATA
30
31 #include <linux/usb.h>
32
33 #include "hid.h"
34 #include <linux/hiddev.h>
35
36 /*
37 * Version Information
38 */
39
40 #define DRIVER_VERSION "v2.0"
41 #define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik"
42 #define DRIVER_DESC "USB HID core driver"
43 #define DRIVER_LICENSE "GPL"
44
45 static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
46 "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
47
48 /*
49 * Register a new report for a device.
50 */
51
52 static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
53 {
54 struct hid_report_enum *report_enum = device->report_enum + type;
55 struct hid_report *report;
56
57 if (report_enum->report_id_hash[id])
58 return report_enum->report_id_hash[id];
59
60 if (!(report = kmalloc(sizeof(struct hid_report), GFP_KERNEL)))
61 return NULL;
62 memset(report, 0, sizeof(struct hid_report));
63
64 if (id != 0)
65 report_enum->numbered = 1;
66
67 report->id = id;
68 report->type = type;
69 report->size = 0;
70 report->device = device;
71 report_enum->report_id_hash[id] = report;
72
73 list_add_tail(&report->list, &report_enum->report_list);
74
75 return report;
76 }
77
78 /*
79 * Register a new field for this report.
80 */
81
82 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
83 {
84 struct hid_field *field;
85
86 if (report->maxfield == HID_MAX_FIELDS) {
87 dbg("too many fields in report");
88 return NULL;
89 }
90
91 if (!(field = kmalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
92 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
93
94 memset(field, 0, sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
95 + values * sizeof(unsigned));
96
97 field->index = report->maxfield++;
98 report->field[field->index] = field;
99 field->usage = (struct hid_usage *)(field + 1);
100 field->value = (unsigned *)(field->usage + usages);
101 field->report = report;
102
103 return field;
104 }
105
106 /*
107 * Open a collection. The type/usage is pushed on the stack.
108 */
109
110 static int open_collection(struct hid_parser *parser, unsigned type)
111 {
112 struct hid_collection *collection;
113 unsigned usage;
114
115 usage = parser->local.usage[0];
116
117 if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
118 dbg("collection stack overflow");
119 return -1;
120 }
121
122 if (parser->device->maxcollection == parser->device->collection_size) {
123 collection = kmalloc(sizeof(struct hid_collection) *
124 parser->device->collection_size * 2,
125 GFP_KERNEL);
126 if (collection == NULL) {
127 dbg("failed to reallocate collection array");
128 return -1;
129 }
130 memcpy(collection, parser->device->collection,
131 sizeof(struct hid_collection) *
132 parser->device->collection_size);
133 memset(collection + parser->device->collection_size, 0,
134 sizeof(struct hid_collection) *
135 parser->device->collection_size);
136 kfree(parser->device->collection);
137 parser->device->collection = collection;
138 parser->device->collection_size *= 2;
139 }
140
141 parser->collection_stack[parser->collection_stack_ptr++] =
142 parser->device->maxcollection;
143
144 collection = parser->device->collection +
145 parser->device->maxcollection++;
146 collection->type = type;
147 collection->usage = usage;
148 collection->level = parser->collection_stack_ptr - 1;
149
150 if (type == HID_COLLECTION_APPLICATION)
151 parser->device->maxapplication++;
152
153 return 0;
154 }
155
156 /*
157 * Close a collection.
158 */
159
160 static int close_collection(struct hid_parser *parser)
161 {
162 if (!parser->collection_stack_ptr) {
163 dbg("collection stack underflow");
164 return -1;
165 }
166 parser->collection_stack_ptr--;
167 return 0;
168 }
169
170 /*
171 * Climb up the stack, search for the specified collection type
172 * and return the usage.
173 */
174
175 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
176 {
177 int n;
178 for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
179 if (parser->device->collection[parser->collection_stack[n]].type == type)
180 return parser->device->collection[parser->collection_stack[n]].usage;
181 return 0; /* we know nothing about this usage type */
182 }
183
184 /*
185 * Add a usage to the temporary parser table.
186 */
187
188 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
189 {
190 if (parser->local.usage_index >= HID_MAX_USAGES) {
191 dbg("usage index exceeded");
192 return -1;
193 }
194 parser->local.usage[parser->local.usage_index] = usage;
195 parser->local.collection_index[parser->local.usage_index] =
196 parser->collection_stack_ptr ?
197 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
198 parser->local.usage_index++;
199 return 0;
200 }
201
202 /*
203 * Register a new field for this report.
204 */
205
206 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
207 {
208 struct hid_report *report;
209 struct hid_field *field;
210 int usages;
211 unsigned offset;
212 int i;
213
214 if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
215 dbg("hid_register_report failed");
216 return -1;
217 }
218
219 if (parser->global.logical_maximum < parser->global.logical_minimum) {
220 dbg("logical range invalid %d %d", parser->global.logical_minimum, parser->global.logical_maximum);
221 return -1;
222 }
223
224 if (!(usages = max_t(int, parser->local.usage_index, parser->global.report_count)))
225 return 0; /* Ignore padding fields */
226
227 offset = report->size;
228 report->size += parser->global.report_size * parser->global.report_count;
229
230 if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
231 return 0;
232
233 field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
234 field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
235 field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
236
237 for (i = 0; i < usages; i++) {
238 int j = i;
239 /* Duplicate the last usage we parsed if we have excess values */
240 if (i >= parser->local.usage_index)
241 j = parser->local.usage_index - 1;
242 field->usage[i].hid = parser->local.usage[j];
243 field->usage[i].collection_index =
244 parser->local.collection_index[j];
245 }
246
247 field->maxusage = usages;
248 field->flags = flags;
249 field->report_offset = offset;
250 field->report_type = report_type;
251 field->report_size = parser->global.report_size;
252 field->report_count = parser->global.report_count;
253 field->logical_minimum = parser->global.logical_minimum;
254 field->logical_maximum = parser->global.logical_maximum;
255 field->physical_minimum = parser->global.physical_minimum;
256 field->physical_maximum = parser->global.physical_maximum;
257 field->unit_exponent = parser->global.unit_exponent;
258 field->unit = parser->global.unit;
259
260 return 0;
261 }
262
263 /*
264 * Read data value from item.
265 */
266
267 static __inline__ __u32 item_udata(struct hid_item *item)
268 {
269 switch (item->size) {
270 case 1: return item->data.u8;
271 case 2: return item->data.u16;
272 case 4: return item->data.u32;
273 }
274 return 0;
275 }
276
277 static __inline__ __s32 item_sdata(struct hid_item *item)
278 {
279 switch (item->size) {
280 case 1: return item->data.s8;
281 case 2: return item->data.s16;
282 case 4: return item->data.s32;
283 }
284 return 0;
285 }
286
287 /*
288 * Process a global item.
289 */
290
291 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
292 {
293 switch (item->tag) {
294
295 case HID_GLOBAL_ITEM_TAG_PUSH:
296
297 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
298 dbg("global enviroment stack overflow");
299 return -1;
300 }
301
302 memcpy(parser->global_stack + parser->global_stack_ptr++,
303 &parser->global, sizeof(struct hid_global));
304 return 0;
305
306 case HID_GLOBAL_ITEM_TAG_POP:
307
308 if (!parser->global_stack_ptr) {
309 dbg("global enviroment stack underflow");
310 return -1;
311 }
312
313 memcpy(&parser->global, parser->global_stack + --parser->global_stack_ptr,
314 sizeof(struct hid_global));
315 return 0;
316
317 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
318 parser->global.usage_page = item_udata(item);
319 return 0;
320
321 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
322 parser->global.logical_minimum = item_sdata(item);
323 return 0;
324
325 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
326 if (parser->global.logical_minimum < 0)
327 parser->global.logical_maximum = item_sdata(item);
328 else
329 parser->global.logical_maximum = item_udata(item);
330 return 0;
331
332 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
333 parser->global.physical_minimum = item_sdata(item);
334 return 0;
335
336 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
337 if (parser->global.physical_minimum < 0)
338 parser->global.physical_maximum = item_sdata(item);
339 else
340 parser->global.physical_maximum = item_udata(item);
341 return 0;
342
343 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
344 parser->global.unit_exponent = item_sdata(item);
345 return 0;
346
347 case HID_GLOBAL_ITEM_TAG_UNIT:
348 parser->global.unit = item_udata(item);
349 return 0;
350
351 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
352 if ((parser->global.report_size = item_udata(item)) > 32) {
353 dbg("invalid report_size %d", parser->global.report_size);
354 return -1;
355 }
356 return 0;
357
358 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
359 if ((parser->global.report_count = item_udata(item)) > HID_MAX_USAGES) {
360 dbg("invalid report_count %d", parser->global.report_count);
361 return -1;
362 }
363 return 0;
364
365 case HID_GLOBAL_ITEM_TAG_REPORT_ID:
366 if ((parser->global.report_id = item_udata(item)) == 0) {
367 dbg("report_id 0 is invalid");
368 return -1;
369 }
370 return 0;
371
372 default:
373 dbg("unknown global tag 0x%x", item->tag);
374 return -1;
375 }
376 }
377
378 /*
379 * Process a local item.
380 */
381
382 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
383 {
384 __u32 data;
385 unsigned n;
386
387 if (item->size == 0) {
388 dbg("item data expected for local item");
389 return -1;
390 }
391
392 data = item_udata(item);
393
394 switch (item->tag) {
395
396 case HID_LOCAL_ITEM_TAG_DELIMITER:
397
398 if (data) {
399 /*
400 * We treat items before the first delimiter
401 * as global to all usage sets (branch 0).
402 * In the moment we process only these global
403 * items and the first delimiter set.
404 */
405 if (parser->local.delimiter_depth != 0) {
406 dbg("nested delimiters");
407 return -1;
408 }
409 parser->local.delimiter_depth++;
410 parser->local.delimiter_branch++;
411 } else {
412 if (parser->local.delimiter_depth < 1) {
413 dbg("bogus close delimiter");
414 return -1;
415 }
416 parser->local.delimiter_depth--;
417 }
418 return 1;
419
420 case HID_LOCAL_ITEM_TAG_USAGE:
421
422 if (parser->local.delimiter_branch > 1) {
423 dbg("alternative usage ignored");
424 return 0;
425 }
426
427 if (item->size <= 2)
428 data = (parser->global.usage_page << 16) + data;
429
430 return hid_add_usage(parser, data);
431
432 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
433
434 if (parser->local.delimiter_branch > 1) {
435 dbg("alternative usage ignored");
436 return 0;
437 }
438
439 if (item->size <= 2)
440 data = (parser->global.usage_page << 16) + data;
441
442 parser->local.usage_minimum = data;
443 return 0;
444
445 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
446
447 if (parser->local.delimiter_branch > 1) {
448 dbg("alternative usage ignored");
449 return 0;
450 }
451
452 if (item->size <= 2)
453 data = (parser->global.usage_page << 16) + data;
454
455 for (n = parser->local.usage_minimum; n <= data; n++)
456 if (hid_add_usage(parser, n)) {
457 dbg("hid_add_usage failed\n");
458 return -1;
459 }
460 return 0;
461
462 default:
463
464 dbg("unknown local item tag 0x%x", item->tag);
465 return 0;
466 }
467 return 0;
468 }
469
470 /*
471 * Process a main item.
472 */
473
474 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
475 {
476 __u32 data;
477 int ret;
478
479 data = item_udata(item);
480
481 switch (item->tag) {
482 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
483 ret = open_collection(parser, data & 0xff);
484 break;
485 case HID_MAIN_ITEM_TAG_END_COLLECTION:
486 ret = close_collection(parser);
487 break;
488 case HID_MAIN_ITEM_TAG_INPUT:
489 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
490 break;
491 case HID_MAIN_ITEM_TAG_OUTPUT:
492 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
493 break;
494 case HID_MAIN_ITEM_TAG_FEATURE:
495 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
496 break;
497 default:
498 dbg("unknown main item tag 0x%x", item->tag);
499 ret = 0;
500 }
501
502 memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */
503
504 return ret;
505 }
506
507 /*
508 * Process a reserved item.
509 */
510
511 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
512 {
513 dbg("reserved item type, tag 0x%x", item->tag);
514 return 0;
515 }
516
517 /*
518 * Free a report and all registered fields. The field->usage and
519 * field->value table's are allocated behind the field, so we need
520 * only to free(field) itself.
521 */
522
523 static void hid_free_report(struct hid_report *report)
524 {
525 unsigned n;
526
527 for (n = 0; n < report->maxfield; n++)
528 kfree(report->field[n]);
529 kfree(report);
530 }
531
532 /*
533 * Free a device structure, all reports, and all fields.
534 */
535
536 static void hid_free_device(struct hid_device *device)
537 {
538 unsigned i,j;
539
540 hid_ff_exit(device);
541
542 for (i = 0; i < HID_REPORT_TYPES; i++) {
543 struct hid_report_enum *report_enum = device->report_enum + i;
544
545 for (j = 0; j < 256; j++) {
546 struct hid_report *report = report_enum->report_id_hash[j];
547 if (report)
548 hid_free_report(report);
549 }
550 }
551
552 if (device->rdesc)
553 kfree(device->rdesc);
554 kfree(device);
555 }
556
557 /*
558 * Fetch a report description item from the data stream. We support long
559 * items, though they are not used yet.
560 */
561
562 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
563 {
564 u8 b;
565
566 if ((end - start) <= 0)
567 return NULL;
568
569 b = *start++;
570
571 item->type = (b >> 2) & 3;
572 item->tag = (b >> 4) & 15;
573
574 if (item->tag == HID_ITEM_TAG_LONG) {
575
576 item->format = HID_ITEM_FORMAT_LONG;
577
578 if ((end - start) < 2)
579 return NULL;
580
581 item->size = *start++;
582 item->tag = *start++;
583
584 if ((end - start) < item->size)
585 return NULL;
586
587 item->data.longdata = start;
588 start += item->size;
589 return start;
590 }
591
592 item->format = HID_ITEM_FORMAT_SHORT;
593 item->size = b & 3;
594
595 switch (item->size) {
596
597 case 0:
598 return start;
599
600 case 1:
601 if ((end - start) < 1)
602 return NULL;
603 item->data.u8 = *start++;
604 return start;
605
606 case 2:
607 if ((end - start) < 2)
608 return NULL;
609 item->data.u16 = le16_to_cpu(get_unaligned((__le16*)start));
610 start = (__u8 *)((__le16 *)start + 1);
611 return start;
612
613 case 3:
614 item->size++;
615 if ((end - start) < 4)
616 return NULL;
617 item->data.u32 = le32_to_cpu(get_unaligned((__le32*)start));
618 start = (__u8 *)((__le32 *)start + 1);
619 return start;
620 }
621
622 return NULL;
623 }
624
625 /*
626 * Parse a report description into a hid_device structure. Reports are
627 * enumerated, fields are attached to these reports.
628 */
629
630 static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
631 {
632 struct hid_device *device;
633 struct hid_parser *parser;
634 struct hid_item item;
635 __u8 *end;
636 unsigned i;
637 static int (*dispatch_type[])(struct hid_parser *parser,
638 struct hid_item *item) = {
639 hid_parser_main,
640 hid_parser_global,
641 hid_parser_local,
642 hid_parser_reserved
643 };
644
645 if (!(device = kmalloc(sizeof(struct hid_device), GFP_KERNEL)))
646 return NULL;
647 memset(device, 0, sizeof(struct hid_device));
648
649 if (!(device->collection =kmalloc(sizeof(struct hid_collection) *
650 HID_DEFAULT_NUM_COLLECTIONS, GFP_KERNEL))) {
651 kfree(device);
652 return NULL;
653 }
654 memset(device->collection, 0, sizeof(struct hid_collection) *
655 HID_DEFAULT_NUM_COLLECTIONS);
656 device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
657
658 for (i = 0; i < HID_REPORT_TYPES; i++)
659 INIT_LIST_HEAD(&device->report_enum[i].report_list);
660
661 if (!(device->rdesc = (__u8 *)kmalloc(size, GFP_KERNEL))) {
662 kfree(device->collection);
663 kfree(device);
664 return NULL;
665 }
666 memcpy(device->rdesc, start, size);
667 device->rsize = size;
668
669 if (!(parser = kmalloc(sizeof(struct hid_parser), GFP_KERNEL))) {
670 kfree(device->rdesc);
671 kfree(device->collection);
672 kfree(device);
673 return NULL;
674 }
675 memset(parser, 0, sizeof(struct hid_parser));
676 parser->device = device;
677
678 end = start + size;
679 while ((start = fetch_item(start, end, &item)) != NULL) {
680
681 if (item.format != HID_ITEM_FORMAT_SHORT) {
682 dbg("unexpected long global item");
683 kfree(device->collection);
684 hid_free_device(device);
685 kfree(parser);
686 return NULL;
687 }
688
689 if (dispatch_type[item.type](parser, &item)) {
690 dbg("item %u %u %u %u parsing failed\n",
691 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
692 kfree(device->collection);
693 hid_free_device(device);
694 kfree(parser);
695 return NULL;
696 }
697
698 if (start == end) {
699 if (parser->collection_stack_ptr) {
700 dbg("unbalanced collection at end of report description");
701 kfree(device->collection);
702 hid_free_device(device);
703 kfree(parser);
704 return NULL;
705 }
706 if (parser->local.delimiter_depth) {
707 dbg("unbalanced delimiter at end of report description");
708 kfree(device->collection);
709 hid_free_device(device);
710 kfree(parser);
711 return NULL;
712 }
713 kfree(parser);
714 return device;
715 }
716 }
717
718 dbg("item fetching failed at offset %d\n", (int)(end - start));
719 kfree(device->collection);
720 hid_free_device(device);
721 kfree(parser);
722 return NULL;
723 }
724
725 /*
726 * Convert a signed n-bit integer to signed 32-bit integer. Common
727 * cases are done through the compiler, the screwed things has to be
728 * done by hand.
729 */
730
731 static __inline__ __s32 snto32(__u32 value, unsigned n)
732 {
733 switch (n) {
734 case 8: return ((__s8)value);
735 case 16: return ((__s16)value);
736 case 32: return ((__s32)value);
737 }
738 return value & (1 << (n - 1)) ? value | (-1 << n) : value;
739 }
740
741 /*
742 * Convert a signed 32-bit integer to a signed n-bit integer.
743 */
744
745 static __inline__ __u32 s32ton(__s32 value, unsigned n)
746 {
747 __s32 a = value >> (n - 1);
748 if (a && a != -1)
749 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
750 return value & ((1 << n) - 1);
751 }
752
753 /*
754 * Extract/implement a data field from/to a report.
755 */
756
757 static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
758 {
759 report += (offset >> 5) << 2; offset &= 31;
760 return (le64_to_cpu(get_unaligned((__le64*)report)) >> offset) & ((1 << n) - 1);
761 }
762
763 static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
764 {
765 report += (offset >> 5) << 2; offset &= 31;
766 put_unaligned((get_unaligned((__le64*)report)
767 & cpu_to_le64(~((((__u64) 1 << n) - 1) << offset)))
768 | cpu_to_le64((__u64)value << offset), (__le64*)report);
769 }
770
771 /*
772 * Search an array for a value.
773 */
774
775 static __inline__ int search(__s32 *array, __s32 value, unsigned n)
776 {
777 while (n--) {
778 if (*array++ == value)
779 return 0;
780 }
781 return -1;
782 }
783
784 static void hid_process_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs)
785 {
786 hid_dump_input(usage, value);
787 if (hid->claimed & HID_CLAIMED_INPUT)
788 hidinput_hid_event(hid, field, usage, value, regs);
789 if (hid->claimed & HID_CLAIMED_HIDDEV)
790 hiddev_hid_event(hid, field, usage, value, regs);
791 }
792
793 /*
794 * Analyse a received field, and fetch the data from it. The field
795 * content is stored for next report processing (we do differential
796 * reporting to the layer).
797 */
798
799 static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, struct pt_regs *regs)
800 {
801 unsigned n;
802 unsigned count = field->report_count;
803 unsigned offset = field->report_offset;
804 unsigned size = field->report_size;
805 __s32 min = field->logical_minimum;
806 __s32 max = field->logical_maximum;
807 __s32 *value;
808
809 value = kmalloc(sizeof(__s32)*count, GFP_ATOMIC);
810 if (!value)
811 return;
812
813 for (n = 0; n < count; n++) {
814
815 value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
816 extract(data, offset + n * size, size);
817
818 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
819 && value[n] >= min && value[n] <= max
820 && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
821 goto exit;
822 }
823
824 for (n = 0; n < count; n++) {
825
826 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
827
828 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
829 if (!value[n])
830 continue;
831 } else {
832 if (value[n] == field->value[n])
833 continue;
834 }
835 hid_process_event(hid, field, &field->usage[n], value[n], regs);
836 continue;
837 }
838
839 if (field->value[n] >= min && field->value[n] <= max
840 && field->usage[field->value[n] - min].hid
841 && search(value, field->value[n], count))
842 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, regs);
843
844 if (value[n] >= min && value[n] <= max
845 && field->usage[value[n] - min].hid
846 && search(field->value, value[n], count))
847 hid_process_event(hid, field, &field->usage[value[n] - min], 1, regs);
848 }
849
850 memcpy(field->value, value, count * sizeof(__s32));
851 exit:
852 kfree(value);
853 }
854
855 static int hid_input_report(int type, struct urb *urb, struct pt_regs *regs)
856 {
857 struct hid_device *hid = urb->context;
858 struct hid_report_enum *report_enum = hid->report_enum + type;
859 u8 *data = urb->transfer_buffer;
860 int len = urb->actual_length;
861 struct hid_report *report;
862 int n, size;
863
864 if (!len) {
865 dbg("empty report");
866 return -1;
867 }
868
869 #ifdef DEBUG_DATA
870 printk(KERN_DEBUG __FILE__ ": report (size %u) (%snumbered)\n", len, report_enum->numbered ? "" : "un");
871 #endif
872
873 n = 0; /* Normally report number is 0 */
874 if (report_enum->numbered) { /* Device uses numbered reports, data[0] is report number */
875 n = *data++;
876 len--;
877 }
878
879 #ifdef DEBUG_DATA
880 {
881 int i;
882 printk(KERN_DEBUG __FILE__ ": report %d (size %u) = ", n, len);
883 for (i = 0; i < len; i++)
884 printk(" %02x", data[i]);
885 printk("\n");
886 }
887 #endif
888
889 if (!(report = report_enum->report_id_hash[n])) {
890 dbg("undefined report_id %d received", n);
891 return -1;
892 }
893
894 size = ((report->size - 1) >> 3) + 1;
895
896 if (len < size) {
897 dbg("report %d is too short, (%d < %d)", report->id, len, size);
898 return -1;
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, 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, 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 int hid_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1007 {
1008 struct hid_report_enum *report_enum = hid->report_enum + HID_OUTPUT_REPORT;
1009 struct list_head *list = report_enum->report_list.next;
1010 int i, j;
1011
1012 while (list != &report_enum->report_list) {
1013 struct hid_report *report = (struct hid_report *) list;
1014 list = list->next;
1015 for (i = 0; i < report->maxfield; i++) {
1016 *field = report->field[i];
1017 for (j = 0; j < (*field)->maxusage; j++)
1018 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1019 return j;
1020 }
1021 }
1022 return -1;
1023 }
1024
1025 /*
1026 * Find a report with a specified HID usage.
1027 */
1028
1029 int hid_find_report_by_usage(struct hid_device *hid, __u32 wanted_usage, struct hid_report **report, int type)
1030 {
1031 struct hid_report_enum *report_enum = hid->report_enum + type;
1032 struct list_head *list = report_enum->report_list.next;
1033 int i, j;
1034
1035 while (list != &report_enum->report_list) {
1036 *report = (struct hid_report *) list;
1037 list = list->next;
1038 for (i = 0; i < (*report)->maxfield; i++) {
1039 struct hid_field *field = (*report)->field[i];
1040 for (j = 0; j < field->maxusage; j++)
1041 if (field->logical == wanted_usage)
1042 return j;
1043 }
1044 }
1045 return -1;
1046 }
1047
1048 #if 0
1049 static int hid_find_field_in_report(struct hid_report *report, __u32 wanted_usage, struct hid_field **field)
1050 {
1051 int i, j;
1052
1053 for (i = 0; i < report->maxfield; i++) {
1054 *field = report->field[i];
1055 for (j = 0; j < (*field)->maxusage; j++)
1056 if ((*field)->usage[j].hid == wanted_usage)
1057 return j;
1058 }
1059
1060 return -1;
1061 }
1062 #endif
1063
1064 static int hid_submit_out(struct hid_device *hid)
1065 {
1066 struct hid_report *report;
1067
1068 report = hid->out[hid->outtail];
1069
1070 hid_output_report(report, hid->outbuf);
1071 hid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1072 hid->urbout->dev = hid->dev;
1073
1074 dbg("submitting out urb");
1075
1076 if (usb_submit_urb(hid->urbout, GFP_ATOMIC)) {
1077 err("usb_submit_urb(out) failed");
1078 return -1;
1079 }
1080
1081 return 0;
1082 }
1083
1084 static int hid_submit_ctrl(struct hid_device *hid)
1085 {
1086 struct hid_report *report;
1087 unsigned char dir;
1088 int len;
1089
1090 report = hid->ctrl[hid->ctrltail].report;
1091 dir = hid->ctrl[hid->ctrltail].dir;
1092
1093 len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1094 if (dir == USB_DIR_OUT) {
1095 hid_output_report(report, hid->ctrlbuf);
1096 hid->urbctrl->pipe = usb_sndctrlpipe(hid->dev, 0);
1097 hid->urbctrl->transfer_buffer_length = len;
1098 } else {
1099 int maxpacket, padlen;
1100
1101 hid->urbctrl->pipe = usb_rcvctrlpipe(hid->dev, 0);
1102 maxpacket = usb_maxpacket(hid->dev, hid->urbctrl->pipe, 0);
1103 if (maxpacket > 0) {
1104 padlen = (len + maxpacket - 1) / maxpacket;
1105 padlen *= maxpacket;
1106 if (padlen > HID_BUFFER_SIZE)
1107 padlen = HID_BUFFER_SIZE;
1108 } else
1109 padlen = 0;
1110 hid->urbctrl->transfer_buffer_length = padlen;
1111 }
1112 hid->urbctrl->dev = hid->dev;
1113
1114 hid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
1115 hid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
1116 hid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
1117 hid->cr->wIndex = cpu_to_le16(hid->ifnum);
1118 hid->cr->wLength = cpu_to_le16(len);
1119
1120 dbg("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u",
1121 hid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
1122 hid->cr->wValue, hid->cr->wIndex, hid->cr->wLength);
1123
1124 if (usb_submit_urb(hid->urbctrl, GFP_ATOMIC)) {
1125 err("usb_submit_urb(ctrl) failed");
1126 return -1;
1127 }
1128
1129 return 0;
1130 }
1131
1132 /*
1133 * Output interrupt completion handler.
1134 */
1135
1136 static void hid_irq_out(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 switch (urb->status) {
1143 case 0: /* success */
1144 case -ESHUTDOWN: /* unplug */
1145 case -EILSEQ: /* unplug timeout on uhci */
1146 unplug = 1;
1147 case -ECONNRESET: /* unlink */
1148 case -ENOENT:
1149 break;
1150 default: /* error */
1151 warn("output irq status %d received", urb->status);
1152 }
1153
1154 spin_lock_irqsave(&hid->outlock, flags);
1155
1156 if (unplug)
1157 hid->outtail = hid->outhead;
1158 else
1159 hid->outtail = (hid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
1160
1161 if (hid->outhead != hid->outtail) {
1162 if (hid_submit_out(hid)) {
1163 clear_bit(HID_OUT_RUNNING, &hid->iofl);;
1164 wake_up(&hid->wait);
1165 }
1166 spin_unlock_irqrestore(&hid->outlock, flags);
1167 return;
1168 }
1169
1170 clear_bit(HID_OUT_RUNNING, &hid->iofl);
1171 spin_unlock_irqrestore(&hid->outlock, flags);
1172 wake_up(&hid->wait);
1173 }
1174
1175 /*
1176 * Control pipe completion handler.
1177 */
1178
1179 static void hid_ctrl(struct urb *urb, struct pt_regs *regs)
1180 {
1181 struct hid_device *hid = urb->context;
1182 unsigned long flags;
1183 int unplug = 0;
1184
1185 spin_lock_irqsave(&hid->ctrllock, flags);
1186
1187 switch (urb->status) {
1188 case 0: /* success */
1189 if (hid->ctrl[hid->ctrltail].dir == USB_DIR_IN)
1190 hid_input_report(hid->ctrl[hid->ctrltail].report->type, urb, regs);
1191 case -ESHUTDOWN: /* unplug */
1192 case -EILSEQ: /* unplug timectrl on uhci */
1193 unplug = 1;
1194 case -ECONNRESET: /* unlink */
1195 case -ENOENT:
1196 case -EPIPE: /* report not available */
1197 break;
1198 default: /* error */
1199 warn("ctrl urb status %d received", urb->status);
1200 }
1201
1202 if (unplug)
1203 hid->ctrltail = hid->ctrlhead;
1204 else
1205 hid->ctrltail = (hid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
1206
1207 if (hid->ctrlhead != hid->ctrltail) {
1208 if (hid_submit_ctrl(hid)) {
1209 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1210 wake_up(&hid->wait);
1211 }
1212 spin_unlock_irqrestore(&hid->ctrllock, flags);
1213 return;
1214 }
1215
1216 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1217 spin_unlock_irqrestore(&hid->ctrllock, flags);
1218 wake_up(&hid->wait);
1219 }
1220
1221 void hid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
1222 {
1223 int head;
1224 unsigned long flags;
1225
1226 if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
1227 return;
1228
1229 if (hid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
1230
1231 spin_lock_irqsave(&hid->outlock, flags);
1232
1233 if ((head = (hid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == hid->outtail) {
1234 spin_unlock_irqrestore(&hid->outlock, flags);
1235 warn("output queue full");
1236 return;
1237 }
1238
1239 hid->out[hid->outhead] = report;
1240 hid->outhead = head;
1241
1242 if (!test_and_set_bit(HID_OUT_RUNNING, &hid->iofl))
1243 if (hid_submit_out(hid))
1244 clear_bit(HID_OUT_RUNNING, &hid->iofl);
1245
1246 spin_unlock_irqrestore(&hid->outlock, flags);
1247 return;
1248 }
1249
1250 spin_lock_irqsave(&hid->ctrllock, flags);
1251
1252 if ((head = (hid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == hid->ctrltail) {
1253 spin_unlock_irqrestore(&hid->ctrllock, flags);
1254 warn("control queue full");
1255 return;
1256 }
1257
1258 hid->ctrl[hid->ctrlhead].report = report;
1259 hid->ctrl[hid->ctrlhead].dir = dir;
1260 hid->ctrlhead = head;
1261
1262 if (!test_and_set_bit(HID_CTRL_RUNNING, &hid->iofl))
1263 if (hid_submit_ctrl(hid))
1264 clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1265
1266 spin_unlock_irqrestore(&hid->ctrllock, flags);
1267 }
1268
1269 int hid_wait_io(struct hid_device *hid)
1270 {
1271 DECLARE_WAITQUEUE(wait, current);
1272 int timeout = 10*HZ;
1273
1274 set_current_state(TASK_UNINTERRUPTIBLE);
1275 add_wait_queue(&hid->wait, &wait);
1276
1277 while (timeout && (test_bit(HID_CTRL_RUNNING, &hid->iofl) ||
1278 test_bit(HID_OUT_RUNNING, &hid->iofl))) {
1279 set_current_state(TASK_UNINTERRUPTIBLE);
1280 timeout = schedule_timeout(timeout);
1281 }
1282
1283 set_current_state(TASK_RUNNING);
1284 remove_wait_queue(&hid->wait, &wait);
1285
1286 if (!timeout) {
1287 dbg("timeout waiting for ctrl or out queue to clear");
1288 return -1;
1289 }
1290
1291 return 0;
1292 }
1293
1294 static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
1295 unsigned char type, void *buf, int size)
1296 {
1297 int result, retries = 4;
1298
1299 memset(buf,0,size); // Make sure we parse really received data
1300
1301 do {
1302 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
1303 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
1304 (type << 8), ifnum, buf, size, HZ * USB_CTRL_GET_TIMEOUT);
1305 retries--;
1306 } while (result < size && retries);
1307 return result;
1308 }
1309
1310 int hid_open(struct hid_device *hid)
1311 {
1312 if (hid->open++)
1313 return 0;
1314
1315 hid->urbin->dev = hid->dev;
1316
1317 if (usb_submit_urb(hid->urbin, GFP_KERNEL))
1318 return -EIO;
1319
1320 return 0;
1321 }
1322
1323 void hid_close(struct hid_device *hid)
1324 {
1325 if (!--hid->open)
1326 usb_kill_urb(hid->urbin);
1327 }
1328
1329 /*
1330 * Initialize all reports
1331 */
1332
1333 void hid_init_reports(struct hid_device *hid)
1334 {
1335 struct hid_report_enum *report_enum;
1336 struct hid_report *report;
1337 struct list_head *list;
1338 int err, ret, size;
1339
1340 /*
1341 * The Set_Idle request is supposed to affect only the
1342 * "Interrupt In" pipe. Unfortunately, buggy devices such as
1343 * the BTC keyboard (ID 046e:5303) the request also affects
1344 * Get_Report requests on the control pipe. In the worst
1345 * case, if the device was put on idle for an indefinite
1346 * amount of time (as we do below) and there are no input
1347 * events to report, the Get_Report requests will just hang
1348 * until we get a USB timeout. To avoid this, we temporarily
1349 * establish a minimal idle time of 1ms. This shouldn't hurt
1350 * bugfree devices and will cause a worst-case extra delay of
1351 * 1ms for buggy ones.
1352 */
1353 usb_control_msg(hid->dev, usb_sndctrlpipe(hid->dev, 0),
1354 HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (1 << 8),
1355 hid->ifnum, NULL, 0, HZ * USB_CTRL_SET_TIMEOUT);
1356
1357 report_enum = hid->report_enum + HID_INPUT_REPORT;
1358 list = report_enum->report_list.next;
1359 while (list != &report_enum->report_list) {
1360 report = (struct hid_report *) list;
1361 size = ((report->size - 1) >> 3) + 1 + report_enum->numbered;
1362 if (size > HID_BUFFER_SIZE) size = HID_BUFFER_SIZE;
1363 if (size > hid->urbin->transfer_buffer_length)
1364 hid->urbin->transfer_buffer_length = size;
1365 hid_submit_report(hid, report, USB_DIR_IN);
1366 list = list->next;
1367 }
1368
1369 report_enum = hid->report_enum + HID_FEATURE_REPORT;
1370 list = report_enum->report_list.next;
1371 while (list != &report_enum->report_list) {
1372 report = (struct hid_report *) list;
1373 hid_submit_report(hid, report, USB_DIR_IN);
1374 list = list->next;
1375 }
1376
1377 err = 0;
1378 ret = hid_wait_io(hid);
1379 while (ret) {
1380 err |= ret;
1381 if (test_bit(HID_CTRL_RUNNING, &hid->iofl))
1382 usb_kill_urb(hid->urbctrl);
1383 if (test_bit(HID_OUT_RUNNING, &hid->iofl))
1384 usb_kill_urb(hid->urbout);
1385 ret = hid_wait_io(hid);
1386 }
1387
1388 if (err)
1389 warn("timeout initializing reports\n");
1390
1391 report_enum = hid->report_enum + HID_INPUT_REPORT;
1392 list = report_enum->report_list.next;
1393 while (list != &report_enum->report_list) {
1394 report = (struct hid_report *) list;
1395 usb_control_msg(hid->dev, usb_sndctrlpipe(hid->dev, 0),
1396 HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, report->id,
1397 hid->ifnum, NULL, 0, HZ * USB_CTRL_SET_TIMEOUT);
1398 list = list->next;
1399 }
1400 }
1401
1402 #define USB_VENDOR_ID_WACOM 0x056a
1403 #define USB_DEVICE_ID_WACOM_PENPARTNER 0x0000
1404 #define USB_DEVICE_ID_WACOM_GRAPHIRE 0x0010
1405 #define USB_DEVICE_ID_WACOM_INTUOS 0x0020
1406 #define USB_DEVICE_ID_WACOM_PL 0x0030
1407 #define USB_DEVICE_ID_WACOM_INTUOS2 0x0040
1408 #define USB_DEVICE_ID_WACOM_VOLITO 0x0060
1409 #define USB_DEVICE_ID_WACOM_PTU 0x0003
1410
1411 #define USB_VENDOR_ID_KBGEAR 0x084e
1412 #define USB_DEVICE_ID_KBGEAR_JAMSTUDIO 0x1001
1413
1414 #define USB_VENDOR_ID_AIPTEK 0x08ca
1415 #define USB_DEVICE_ID_AIPTEK_01 0x0001
1416 #define USB_DEVICE_ID_AIPTEK_10 0x0010
1417 #define USB_DEVICE_ID_AIPTEK_20 0x0020
1418 #define USB_DEVICE_ID_AIPTEK_21 0x0021
1419 #define USB_DEVICE_ID_AIPTEK_22 0x0022
1420 #define USB_DEVICE_ID_AIPTEK_23 0x0023
1421 #define USB_DEVICE_ID_AIPTEK_24 0x0024
1422
1423 #define USB_VENDOR_ID_GRIFFIN 0x077d
1424 #define USB_DEVICE_ID_POWERMATE 0x0410
1425 #define USB_DEVICE_ID_SOUNDKNOB 0x04AA
1426
1427 #define USB_VENDOR_ID_ATEN 0x0557
1428 #define USB_DEVICE_ID_ATEN_UC100KM 0x2004
1429 #define USB_DEVICE_ID_ATEN_CS124U 0x2202
1430 #define USB_DEVICE_ID_ATEN_2PORTKVM 0x2204
1431 #define USB_DEVICE_ID_ATEN_4PORTKVM 0x2205
1432 #define USB_DEVICE_ID_ATEN_4PORTKVMC 0x2208
1433
1434 #define USB_VENDOR_ID_TOPMAX 0x0663
1435 #define USB_DEVICE_ID_TOPMAX_COBRAPAD 0x0103
1436
1437 #define USB_VENDOR_ID_HAPP 0x078b
1438 #define USB_DEVICE_ID_UGCI_DRIVING 0x0010
1439 #define USB_DEVICE_ID_UGCI_FLYING 0x0020
1440 #define USB_DEVICE_ID_UGCI_FIGHTING 0x0030
1441
1442 #define USB_VENDOR_ID_MGE 0x0463
1443 #define USB_DEVICE_ID_MGE_UPS 0xffff
1444 #define USB_DEVICE_ID_MGE_UPS1 0x0001
1445
1446 #define USB_VENDOR_ID_ONTRAK 0x0a07
1447 #define USB_DEVICE_ID_ONTRAK_ADU100 0x0064
1448
1449 #define USB_VENDOR_ID_TANGTOP 0x0d3d
1450 #define USB_DEVICE_ID_TANGTOP_USBPS2 0x0001
1451
1452 #define USB_VENDOR_ID_ESSENTIAL_REALITY 0x0d7f
1453 #define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100
1454
1455 #define USB_VENDOR_ID_A4TECH 0x09DA
1456 #define USB_DEVICE_ID_A4TECH_WCP32PU 0x0006
1457
1458 #define USB_VENDOR_ID_CYPRESS 0x04b4
1459 #define USB_DEVICE_ID_CYPRESS_MOUSE 0x0001
1460 #define USB_DEVICE_ID_CYPRESS_HIDCOM 0x5500
1461
1462 #define USB_VENDOR_ID_BERKSHIRE 0x0c98
1463 #define USB_DEVICE_ID_BERKSHIRE_PCWD 0x1140
1464
1465 #define USB_VENDOR_ID_ALPS 0x0433
1466 #define USB_DEVICE_ID_IBM_GAMEPAD 0x1101
1467
1468 #define USB_VENDOR_ID_SAITEK 0x06a3
1469 #define USB_DEVICE_ID_SAITEK_RUMBLEPAD 0xff17
1470
1471 #define USB_VENDOR_ID_NEC 0x073e
1472 #define USB_DEVICE_ID_NEC_USB_GAME_PAD 0x0301
1473
1474 #define USB_VENDOR_ID_CHIC 0x05fe
1475 #define USB_DEVICE_ID_CHIC_GAMEPAD 0x0014
1476
1477 #define USB_VENDOR_ID_GLAB 0x06c2
1478 #define USB_DEVICE_ID_4_PHIDGETSERVO_30 0x0038
1479 #define USB_DEVICE_ID_1_PHIDGETSERVO_30 0x0039
1480 #define USB_DEVICE_ID_8_8_8_IF_KIT 0x0045
1481 #define USB_DEVICE_ID_0_0_4_IF_KIT 0x0040
1482 #define USB_DEVICE_ID_0_8_8_IF_KIT 0x0053
1483
1484 #define USB_VENDOR_ID_WISEGROUP 0x0925
1485 #define USB_DEVICE_ID_1_PHIDGETSERVO_20 0x8101
1486 #define USB_DEVICE_ID_4_PHIDGETSERVO_20 0x8104
1487
1488 #define USB_VENDOR_ID_CODEMERCS 0x07c0
1489 #define USB_DEVICE_ID_CODEMERCS_IOW40 0x1500
1490 #define USB_DEVICE_ID_CODEMERCS_IOW24 0x1501
1491 #define USB_DEVICE_ID_CODEMERCS_IOW48 0x1502
1492 #define USB_DEVICE_ID_CODEMERCS_IOW28 0x1503
1493
1494 #define USB_VENDOR_ID_DELORME 0x1163
1495 #define USB_DEVICE_ID_DELORME_EARTHMATE 0x0100
1496
1497 static struct hid_blacklist {
1498 __u16 idVendor;
1499 __u16 idProduct;
1500 unsigned quirks;
1501 } hid_blacklist[] = {
1502
1503 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01, HID_QUIRK_IGNORE },
1504 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10, HID_QUIRK_IGNORE },
1505 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20, HID_QUIRK_IGNORE },
1506 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21, HID_QUIRK_IGNORE },
1507 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22, HID_QUIRK_IGNORE },
1508 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23, HID_QUIRK_IGNORE },
1509 { USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24, HID_QUIRK_IGNORE },
1510 { USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD, HID_QUIRK_IGNORE },
1511 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW40, HID_QUIRK_IGNORE },
1512 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW24, HID_QUIRK_IGNORE },
1513 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW48, HID_QUIRK_IGNORE },
1514 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW28, HID_QUIRK_IGNORE },
1515
1516 { USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5, HID_QUIRK_IGNORE },
1517 { USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO, HID_QUIRK_IGNORE },
1518 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1519 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
1520 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT, HID_QUIRK_IGNORE },
1521 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT, HID_QUIRK_IGNORE },
1522 { USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT, HID_QUIRK_IGNORE },
1523 { USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE, HID_QUIRK_IGNORE },
1524 { USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB, HID_QUIRK_IGNORE },
1525 { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_IGNORE },
1526 { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1, HID_QUIRK_IGNORE },
1527 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100, HID_QUIRK_IGNORE },
1528 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100, HID_QUIRK_IGNORE },
1529 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200, HID_QUIRK_IGNORE },
1530 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300, HID_QUIRK_IGNORE },
1531 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400, HID_QUIRK_IGNORE },
1532 { USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500, HID_QUIRK_IGNORE },
1533 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PENPARTNER, HID_QUIRK_IGNORE },
1534 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE, HID_QUIRK_IGNORE },
1535 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 1, HID_QUIRK_IGNORE },
1536 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 2, HID_QUIRK_IGNORE },
1537 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 3, HID_QUIRK_IGNORE },
1538 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 4, HID_QUIRK_IGNORE },
1539 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS, HID_QUIRK_IGNORE },
1540 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 1, HID_QUIRK_IGNORE },
1541 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 2, HID_QUIRK_IGNORE },
1542 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 3, HID_QUIRK_IGNORE },
1543 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 4, HID_QUIRK_IGNORE },
1544 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL, HID_QUIRK_IGNORE },
1545 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 1, HID_QUIRK_IGNORE },
1546 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 2, HID_QUIRK_IGNORE },
1547 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 3, HID_QUIRK_IGNORE },
1548 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 4, HID_QUIRK_IGNORE },
1549 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 5, HID_QUIRK_IGNORE },
1550 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 1, HID_QUIRK_IGNORE },
1551 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 2, HID_QUIRK_IGNORE },
1552 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 3, HID_QUIRK_IGNORE },
1553 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 4, HID_QUIRK_IGNORE },
1554 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 5, HID_QUIRK_IGNORE },
1555 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 7, HID_QUIRK_IGNORE },
1556 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO, HID_QUIRK_IGNORE },
1557 { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PTU, HID_QUIRK_IGNORE },
1558 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1559 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
1560
1561
1562 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
1563 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
1564 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
1565 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
1566 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
1567 { USB_VENDOR_ID_TANGTOP, USB_DEVICE_ID_TANGTOP_USBPS2, HID_QUIRK_NOGET },
1568
1569 { USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU, HID_QUIRK_2WHEEL_MOUSE_HACK_7 },
1570 { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE, HID_QUIRK_2WHEEL_MOUSE_HACK_5 },
1571 { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM, HID_QUIRK_IGNORE },
1572
1573 { USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
1574 { USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD },
1575 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1576 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1577 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1578 { USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD },
1579 { USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
1580 { USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
1581
1582 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW40, HID_QUIRK_IGNORE },
1583 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW24, HID_QUIRK_IGNORE },
1584 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW48, HID_QUIRK_IGNORE },
1585 { USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW28, HID_QUIRK_IGNORE },
1586
1587 { USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE, HID_QUIRK_IGNORE },
1588
1589 { 0, 0 }
1590 };
1591
1592 static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
1593 {
1594 if (!(hid->inbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->inbuf_dma)))
1595 return -1;
1596 if (!(hid->outbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->outbuf_dma)))
1597 return -1;
1598 if (!(hid->cr = usb_buffer_alloc(dev, sizeof(*(hid->cr)), SLAB_ATOMIC, &hid->cr_dma)))
1599 return -1;
1600 if (!(hid->ctrlbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->ctrlbuf_dma)))
1601 return -1;
1602
1603 return 0;
1604 }
1605
1606 static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
1607 {
1608 if (hid->inbuf)
1609 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->inbuf, hid->inbuf_dma);
1610 if (hid->outbuf)
1611 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->outbuf, hid->outbuf_dma);
1612 if (hid->cr)
1613 usb_buffer_free(dev, sizeof(*(hid->cr)), hid->cr, hid->cr_dma);
1614 if (hid->ctrlbuf)
1615 usb_buffer_free(dev, HID_BUFFER_SIZE, hid->ctrlbuf, hid->ctrlbuf_dma);
1616 }
1617
1618 static struct hid_device *usb_hid_configure(struct usb_interface *intf)
1619 {
1620 struct usb_host_interface *interface = intf->cur_altsetting;
1621 struct usb_device *dev = interface_to_usbdev (intf);
1622 struct hid_descriptor *hdesc;
1623 struct hid_device *hid;
1624 unsigned quirks = 0, rsize = 0;
1625 char *buf, *rdesc;
1626 int n;
1627
1628 for (n = 0; hid_blacklist[n].idVendor; n++)
1629 if ((hid_blacklist[n].idVendor == le16_to_cpu(dev->descriptor.idVendor)) &&
1630 (hid_blacklist[n].idProduct == le16_to_cpu(dev->descriptor.idProduct)))
1631 quirks = hid_blacklist[n].quirks;
1632
1633 if (quirks & HID_QUIRK_IGNORE)
1634 return NULL;
1635
1636 if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && ((!interface->desc.bNumEndpoints) ||
1637 usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
1638 dbg("class descriptor not present\n");
1639 return NULL;
1640 }
1641
1642 for (n = 0; n < hdesc->bNumDescriptors; n++)
1643 if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
1644 rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
1645
1646 if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
1647 dbg("weird size of report descriptor (%u)", rsize);
1648 return NULL;
1649 }
1650
1651 if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
1652 dbg("couldn't allocate rdesc memory");
1653 return NULL;
1654 }
1655
1656 if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
1657 dbg("reading report descriptor failed");
1658 kfree(rdesc);
1659 return NULL;
1660 }
1661
1662 #ifdef DEBUG_DATA
1663 printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
1664 for (n = 0; n < rsize; n++)
1665 printk(" %02x", (unsigned char) rdesc[n]);
1666 printk("\n");
1667 #endif
1668
1669 if (!(hid = hid_parse_report(rdesc, n))) {
1670 dbg("parsing report descriptor failed");
1671 kfree(rdesc);
1672 return NULL;
1673 }
1674
1675 kfree(rdesc);
1676 hid->quirks = quirks;
1677
1678 if (hid_alloc_buffers(dev, hid)) {
1679 hid_free_buffers(dev, hid);
1680 goto fail;
1681 }
1682
1683 for (n = 0; n < interface->desc.bNumEndpoints; n++) {
1684
1685 struct usb_endpoint_descriptor *endpoint;
1686 int pipe;
1687 int interval;
1688
1689 endpoint = &interface->endpoint[n].desc;
1690 if ((endpoint->bmAttributes & 3) != 3) /* Not an interrupt endpoint */
1691 continue;
1692
1693 /* handle potential highspeed HID correctly */
1694 interval = endpoint->bInterval;
1695 if (dev->speed == USB_SPEED_HIGH)
1696 interval = 1 << (interval - 1);
1697
1698 if (endpoint->bEndpointAddress & USB_DIR_IN) {
1699 if (hid->urbin)
1700 continue;
1701 if (!(hid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
1702 goto fail;
1703 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
1704 usb_fill_int_urb(hid->urbin, dev, pipe, hid->inbuf, 0,
1705 hid_irq_in, hid, interval);
1706 hid->urbin->transfer_dma = hid->inbuf_dma;
1707 hid->urbin->transfer_flags |=(URB_NO_TRANSFER_DMA_MAP | URB_ASYNC_UNLINK);
1708 } else {
1709 if (hid->urbout)
1710 continue;
1711 if (!(hid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
1712 goto fail;
1713 pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
1714 usb_fill_int_urb(hid->urbout, dev, pipe, hid->outbuf, 0,
1715 hid_irq_out, hid, interval);
1716 hid->urbout->transfer_dma = hid->outbuf_dma;
1717 hid->urbout->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_ASYNC_UNLINK);
1718 }
1719 }
1720
1721 if (!hid->urbin) {
1722 err("couldn't find an input interrupt endpoint");
1723 goto fail;
1724 }
1725
1726 init_waitqueue_head(&hid->wait);
1727
1728 spin_lock_init(&hid->outlock);
1729 spin_lock_init(&hid->ctrllock);
1730
1731 hid->version = le16_to_cpu(hdesc->bcdHID);
1732 hid->country = hdesc->bCountryCode;
1733 hid->dev = dev;
1734 hid->intf = intf;
1735 hid->ifnum = interface->desc.bInterfaceNumber;
1736
1737 hid->name[0] = 0;
1738
1739 if (!(buf = kmalloc(64, GFP_KERNEL)))
1740 goto fail;
1741
1742 if (usb_string(dev, dev->descriptor.iManufacturer, buf, 64) > 0) {
1743 strcat(hid->name, buf);
1744 if (usb_string(dev, dev->descriptor.iProduct, buf, 64) > 0)
1745 snprintf(hid->name, 64, "%s %s", hid->name, buf);
1746 } else if (usb_string(dev, dev->descriptor.iProduct, buf, 64) > 0) {
1747 snprintf(hid->name, 128, "%s", buf);
1748 } else
1749 snprintf(hid->name, 128, "%04x:%04x",
1750 le16_to_cpu(dev->descriptor.idVendor),
1751 le16_to_cpu(dev->descriptor.idProduct));
1752
1753 usb_make_path(dev, buf, 64);
1754 snprintf(hid->phys, 64, "%s/input%d", buf,
1755 intf->altsetting[0].desc.bInterfaceNumber);
1756
1757 if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
1758 hid->uniq[0] = 0;
1759
1760 kfree(buf);
1761
1762 hid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
1763 if (!hid->urbctrl)
1764 goto fail;
1765 usb_fill_control_urb(hid->urbctrl, dev, 0, (void *) hid->cr,
1766 hid->ctrlbuf, 1, hid_ctrl, hid);
1767 hid->urbctrl->setup_dma = hid->cr_dma;
1768 hid->urbctrl->transfer_dma = hid->ctrlbuf_dma;
1769 hid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP | URB_ASYNC_UNLINK);
1770
1771 return hid;
1772
1773 fail:
1774
1775 if (hid->urbin)
1776 usb_free_urb(hid->urbin);
1777 if (hid->urbout)
1778 usb_free_urb(hid->urbout);
1779 if (hid->urbctrl)
1780 usb_free_urb(hid->urbctrl);
1781 hid_free_buffers(dev, hid);
1782 hid_free_device(hid);
1783
1784 return NULL;
1785 }
1786
1787 static void hid_disconnect(struct usb_interface *intf)
1788 {
1789 struct hid_device *hid = usb_get_intfdata (intf);
1790
1791 if (!hid)
1792 return;
1793
1794 usb_set_intfdata(intf, NULL);
1795 usb_kill_urb(hid->urbin);
1796 usb_kill_urb(hid->urbout);
1797 usb_kill_urb(hid->urbctrl);
1798
1799 if (hid->claimed & HID_CLAIMED_INPUT)
1800 hidinput_disconnect(hid);
1801 if (hid->claimed & HID_CLAIMED_HIDDEV)
1802 hiddev_disconnect(hid);
1803
1804 usb_free_urb(hid->urbin);
1805 usb_free_urb(hid->urbctrl);
1806 if (hid->urbout)
1807 usb_free_urb(hid->urbout);
1808
1809 hid_free_buffers(hid->dev, hid);
1810 hid_free_device(hid);
1811 }
1812
1813 static int hid_probe (struct usb_interface *intf, const struct usb_device_id *id)
1814 {
1815 struct hid_device *hid;
1816 char path[64];
1817 int i;
1818 char *c;
1819
1820 dbg("HID probe called for ifnum %d",
1821 intf->altsetting->desc.bInterfaceNumber);
1822
1823 if (!(hid = usb_hid_configure(intf)))
1824 return -EIO;
1825
1826 hid_init_reports(hid);
1827 hid_dump_device(hid);
1828
1829 if (!hidinput_connect(hid))
1830 hid->claimed |= HID_CLAIMED_INPUT;
1831 if (!hiddev_connect(hid))
1832 hid->claimed |= HID_CLAIMED_HIDDEV;
1833
1834 usb_set_intfdata(intf, hid);
1835
1836 if (!hid->claimed) {
1837 printk ("HID device not claimed by input or hiddev\n");
1838 hid_disconnect(intf);
1839 return -EIO;
1840 }
1841
1842 printk(KERN_INFO);
1843
1844 if (hid->claimed & HID_CLAIMED_INPUT)
1845 printk("input");
1846 if (hid->claimed == (HID_CLAIMED_INPUT | HID_CLAIMED_HIDDEV))
1847 printk(",");
1848 if (hid->claimed & HID_CLAIMED_HIDDEV)
1849 printk("hiddev%d", hid->minor);
1850
1851 c = "Device";
1852 for (i = 0; i < hid->maxcollection; i++) {
1853 if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
1854 (hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1855 (hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
1856 c = hid_types[hid->collection[i].usage & 0xffff];
1857 break;
1858 }
1859 }
1860
1861 usb_make_path(interface_to_usbdev(intf), path, 63);
1862
1863 printk(": USB HID v%x.%02x %s [%s] on %s\n",
1864 hid->version >> 8, hid->version & 0xff, c, hid->name, path);
1865
1866 return 0;
1867 }
1868
1869 static int hid_suspend(struct usb_interface *intf, u32 state)
1870 {
1871 struct hid_device *hid = usb_get_intfdata (intf);
1872
1873 usb_kill_urb(hid->urbin);
1874 intf->dev.power.power_state = state;
1875 dev_dbg(&intf->dev, "suspend\n");
1876 return 0;
1877 }
1878
1879 static int hid_resume(struct usb_interface *intf)
1880 {
1881 struct hid_device *hid = usb_get_intfdata (intf);
1882 int status;
1883
1884 intf->dev.power.power_state = PM_SUSPEND_ON;
1885 if (hid->open)
1886 status = usb_submit_urb(hid->urbin, GFP_NOIO);
1887 else
1888 status = 0;
1889 dev_dbg(&intf->dev, "resume status %d\n", status);
1890 return status;
1891 }
1892
1893 static struct usb_device_id hid_usb_ids [] = {
1894 { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1895 .bInterfaceClass = USB_INTERFACE_CLASS_HID },
1896 { } /* Terminating entry */
1897 };
1898
1899 MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1900
1901 static struct usb_driver hid_driver = {
1902 .owner = THIS_MODULE,
1903 .name = "usbhid",
1904 .probe = hid_probe,
1905 .disconnect = hid_disconnect,
1906 .suspend = hid_suspend,
1907 .resume = hid_resume,
1908 .id_table = hid_usb_ids,
1909 };
1910
1911 static int __init hid_init(void)
1912 {
1913 int retval;
1914 retval = hiddev_init();
1915 if (retval)
1916 goto hiddev_init_fail;
1917 retval = usb_register(&hid_driver);
1918 if (retval)
1919 goto usb_register_fail;
1920 info(DRIVER_VERSION ":" DRIVER_DESC);
1921
1922 return 0;
1923 usb_register_fail:
1924 hiddev_exit();
1925 hiddev_init_fail:
1926 return retval;
1927 }
1928
1929 static void __exit hid_exit(void)
1930 {
1931 usb_deregister(&hid_driver);
1932 hiddev_exit();
1933 }
1934
1935 module_init(hid_init);
1936 module_exit(hid_exit);
1937
1938 MODULE_AUTHOR(DRIVER_AUTHOR);
1939 MODULE_DESCRIPTION(DRIVER_DESC);
1940 MODULE_LICENSE(DRIVER_LICENSE);
1941
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