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On Tue, Nov 06, 2007 at 02:33:53AM -0800, akpm@linux-foundation.org wrote:
[mmotm.git] / drivers / hid / hid-core.c
blob6d5c84573b3a6fddd763b26edbe26fba18e95bda
1 /*
2 * 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 * Copyright (c) 2006-2007 Jiri Kosina
8 */
9
10 /*
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
14 * any later version.
15 */
16
17 #include <linux/module.h>
18 #include <linux/slab.h>
19 #include <linux/init.h>
20 #include <linux/kernel.h>
21 #include <linux/list.h>
22 #include <linux/mm.h>
23 #include <linux/spinlock.h>
24 #include <asm/unaligned.h>
25 #include <asm/byteorder.h>
26 #include <linux/input.h>
27 #include <linux/wait.h>
28 #include <linux/vmalloc.h>
29 #include <linux/sched.h>
30
31 #include <linux/hid.h>
32 #include <linux/hiddev.h>
33 #include <linux/hid-debug.h>
34 #include <linux/hidraw.h>
35
36 #include "hid-ids.h"
37
38 /*
39 * Version Information
40 */
41
42 #define DRIVER_DESC "HID core driver"
43 #define DRIVER_LICENSE "GPL"
44
45 int hid_debug = 0;
46 module_param_named(debug, hid_debug, int, 0600);
47 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
48 EXPORT_SYMBOL_GPL(hid_debug);
49
50 /*
51 * Register a new report for a device.
52 */
53
54 static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
55 {
56 struct hid_report_enum *report_enum = device->report_enum + type;
57 struct hid_report *report;
58
59 if (report_enum->report_id_hash[id])
60 return report_enum->report_id_hash[id];
61
62 if (!(report = kzalloc(sizeof(struct hid_report), GFP_KERNEL)))
63 return NULL;
64
65 if (id != 0)
66 report_enum->numbered = 1;
67
68 report->id = id;
69 report->type = type;
70 report->size = 0;
71 report->device = device;
72 report_enum->report_id_hash[id] = report;
73
74 list_add_tail(&report->list, &report_enum->report_list);
75
76 return report;
77 }
78
79 /*
80 * Register a new field for this report.
81 */
82
83 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
84 {
85 struct hid_field *field;
86
87 if (report->maxfield == HID_MAX_FIELDS) {
88 dbg_hid("too many fields in report\n");
89 return NULL;
90 }
91
92 if (!(field = kzalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
93 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
94
95 field->index = report->maxfield++;
96 report->field[field->index] = field;
97 field->usage = (struct hid_usage *)(field + 1);
98 field->value = (s32 *)(field->usage + usages);
99 field->report = report;
100
101 return field;
102 }
103
104 /*
105 * Open a collection. The type/usage is pushed on the stack.
106 */
107
108 static int open_collection(struct hid_parser *parser, unsigned type)
109 {
110 struct hid_collection *collection;
111 unsigned usage;
112
113 usage = parser->local.usage[0];
114
115 if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
116 dbg_hid("collection stack overflow\n");
117 return -1;
118 }
119
120 if (parser->device->maxcollection == parser->device->collection_size) {
121 collection = kmalloc(sizeof(struct hid_collection) *
122 parser->device->collection_size * 2, GFP_KERNEL);
123 if (collection == NULL) {
124 dbg_hid("failed to reallocate collection array\n");
125 return -1;
126 }
127 memcpy(collection, parser->device->collection,
128 sizeof(struct hid_collection) *
129 parser->device->collection_size);
130 memset(collection + parser->device->collection_size, 0,
131 sizeof(struct hid_collection) *
132 parser->device->collection_size);
133 kfree(parser->device->collection);
134 parser->device->collection = collection;
135 parser->device->collection_size *= 2;
136 }
137
138 parser->collection_stack[parser->collection_stack_ptr++] =
139 parser->device->maxcollection;
140
141 collection = parser->device->collection +
142 parser->device->maxcollection++;
143 collection->type = type;
144 collection->usage = usage;
145 collection->level = parser->collection_stack_ptr - 1;
146
147 if (type == HID_COLLECTION_APPLICATION)
148 parser->device->maxapplication++;
149
150 return 0;
151 }
152
153 /*
154 * Close a collection.
155 */
156
157 static int close_collection(struct hid_parser *parser)
158 {
159 if (!parser->collection_stack_ptr) {
160 dbg_hid("collection stack underflow\n");
161 return -1;
162 }
163 parser->collection_stack_ptr--;
164 return 0;
165 }
166
167 /*
168 * Climb up the stack, search for the specified collection type
169 * and return the usage.
170 */
171
172 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
173 {
174 int n;
175 for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
176 if (parser->device->collection[parser->collection_stack[n]].type == type)
177 return parser->device->collection[parser->collection_stack[n]].usage;
178 return 0; /* we know nothing about this usage type */
179 }
180
181 /*
182 * Add a usage to the temporary parser table.
183 */
184
185 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
186 {
187 if (parser->local.usage_index >= HID_MAX_USAGES) {
188 dbg_hid("usage index exceeded\n");
189 return -1;
190 }
191 parser->local.usage[parser->local.usage_index] = usage;
192 parser->local.collection_index[parser->local.usage_index] =
193 parser->collection_stack_ptr ?
194 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
195 parser->local.usage_index++;
196 return 0;
197 }
198
199 /*
200 * Register a new field for this report.
201 */
202
203 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
204 {
205 struct hid_report *report;
206 struct hid_field *field;
207 int usages;
208 unsigned offset;
209 int i;
210
211 if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
212 dbg_hid("hid_register_report failed\n");
213 return -1;
214 }
215
216 if (parser->global.logical_maximum < parser->global.logical_minimum) {
217 dbg_hid("logical range invalid %d %d\n", parser->global.logical_minimum, parser->global.logical_maximum);
218 return -1;
219 }
220
221 offset = report->size;
222 report->size += parser->global.report_size * parser->global.report_count;
223
224 if (!parser->local.usage_index) /* Ignore padding fields */
225 return 0;
226
227 usages = max_t(int, parser->local.usage_index, parser->global.report_count);
228
229 if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
230 return 0;
231
232 field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
233 field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
234 field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
235
236 for (i = 0; i < usages; i++) {
237 int j = i;
238 /* Duplicate the last usage we parsed if we have excess values */
239 if (i >= parser->local.usage_index)
240 j = parser->local.usage_index - 1;
241 field->usage[i].hid = parser->local.usage[j];
242 field->usage[i].collection_index =
243 parser->local.collection_index[j];
244 }
245
246 field->maxusage = usages;
247 field->flags = flags;
248 field->report_offset = offset;
249 field->report_type = report_type;
250 field->report_size = parser->global.report_size;
251 field->report_count = parser->global.report_count;
252 field->logical_minimum = parser->global.logical_minimum;
253 field->logical_maximum = parser->global.logical_maximum;
254 field->physical_minimum = parser->global.physical_minimum;
255 field->physical_maximum = parser->global.physical_maximum;
256 field->unit_exponent = parser->global.unit_exponent;
257 field->unit = parser->global.unit;
258
259 return 0;
260 }
261
262 /*
263 * Read data value from item.
264 */
265
266 static u32 item_udata(struct hid_item *item)
267 {
268 switch (item->size) {
269 case 1: return item->data.u8;
270 case 2: return item->data.u16;
271 case 4: return item->data.u32;
272 }
273 return 0;
274 }
275
276 static s32 item_sdata(struct hid_item *item)
277 {
278 switch (item->size) {
279 case 1: return item->data.s8;
280 case 2: return item->data.s16;
281 case 4: return item->data.s32;
282 }
283 return 0;
284 }
285
286 /*
287 * Process a global item.
288 */
289
290 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
291 {
292 switch (item->tag) {
293 case HID_GLOBAL_ITEM_TAG_PUSH:
294
295 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
296 dbg_hid("global enviroment stack overflow\n");
297 return -1;
298 }
299
300 memcpy(parser->global_stack + parser->global_stack_ptr++,
301 &parser->global, sizeof(struct hid_global));
302 return 0;
303
304 case HID_GLOBAL_ITEM_TAG_POP:
305
306 if (!parser->global_stack_ptr) {
307 dbg_hid("global enviroment stack underflow\n");
308 return -1;
309 }
310
311 memcpy(&parser->global, parser->global_stack +
312 --parser->global_stack_ptr, sizeof(struct hid_global));
313 return 0;
314
315 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
316 parser->global.usage_page = item_udata(item);
317 return 0;
318
319 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
320 parser->global.logical_minimum = item_sdata(item);
321 return 0;
322
323 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
324 if (parser->global.logical_minimum < 0)
325 parser->global.logical_maximum = item_sdata(item);
326 else
327 parser->global.logical_maximum = item_udata(item);
328 return 0;
329
330 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
331 parser->global.physical_minimum = item_sdata(item);
332 return 0;
333
334 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
335 if (parser->global.physical_minimum < 0)
336 parser->global.physical_maximum = item_sdata(item);
337 else
338 parser->global.physical_maximum = item_udata(item);
339 return 0;
340
341 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
342 parser->global.unit_exponent = item_sdata(item);
343 return 0;
344
345 case HID_GLOBAL_ITEM_TAG_UNIT:
346 parser->global.unit = item_udata(item);
347 return 0;
348
349 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
350 parser->global.report_size = item_udata(item);
351 if (parser->global.report_size > 32) {
352 dbg_hid("invalid report_size %d\n",
353 parser->global.report_size);
354 return -1;
355 }
356 return 0;
357
358 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
359 parser->global.report_count = item_udata(item);
360 if (parser->global.report_count > HID_MAX_USAGES) {
361 dbg_hid("invalid report_count %d\n",
362 parser->global.report_count);
363 return -1;
364 }
365 return 0;
366
367 case HID_GLOBAL_ITEM_TAG_REPORT_ID:
368 parser->global.report_id = item_udata(item);
369 if (parser->global.report_id == 0) {
370 dbg_hid("report_id 0 is invalid\n");
371 return -1;
372 }
373 return 0;
374
375 default:
376 dbg_hid("unknown global tag 0x%x\n", item->tag);
377 return -1;
378 }
379 }
380
381 /*
382 * Process a local item.
383 */
384
385 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
386 {
387 __u32 data;
388 unsigned n;
389
390 if (item->size == 0) {
391 dbg_hid("item data expected for local item\n");
392 return -1;
393 }
394
395 data = item_udata(item);
396
397 switch (item->tag) {
398 case HID_LOCAL_ITEM_TAG_DELIMITER:
399
400 if (data) {
401 /*
402 * We treat items before the first delimiter
403 * as global to all usage sets (branch 0).
404 * In the moment we process only these global
405 * items and the first delimiter set.
406 */
407 if (parser->local.delimiter_depth != 0) {
408 dbg_hid("nested delimiters\n");
409 return -1;
410 }
411 parser->local.delimiter_depth++;
412 parser->local.delimiter_branch++;
413 } else {
414 if (parser->local.delimiter_depth < 1) {
415 dbg_hid("bogus close delimiter\n");
416 return -1;
417 }
418 parser->local.delimiter_depth--;
419 }
420 return 1;
421
422 case HID_LOCAL_ITEM_TAG_USAGE:
423
424 if (parser->local.delimiter_branch > 1) {
425 dbg_hid("alternative usage ignored\n");
426 return 0;
427 }
428
429 if (item->size <= 2)
430 data = (parser->global.usage_page << 16) + data;
431
432 return hid_add_usage(parser, data);
433
434 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
435
436 if (parser->local.delimiter_branch > 1) {
437 dbg_hid("alternative usage ignored\n");
438 return 0;
439 }
440
441 if (item->size <= 2)
442 data = (parser->global.usage_page << 16) + data;
443
444 parser->local.usage_minimum = data;
445 return 0;
446
447 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
448
449 if (parser->local.delimiter_branch > 1) {
450 dbg_hid("alternative usage ignored\n");
451 return 0;
452 }
453
454 if (item->size <= 2)
455 data = (parser->global.usage_page << 16) + data;
456
457 for (n = parser->local.usage_minimum; n <= data; n++)
458 if (hid_add_usage(parser, n)) {
459 dbg_hid("hid_add_usage failed\n");
460 return -1;
461 }
462 return 0;
463
464 default:
465
466 dbg_hid("unknown local item tag 0x%x\n", item->tag);
467 return 0;
468 }
469 return 0;
470 }
471
472 /*
473 * Process a main item.
474 */
475
476 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
477 {
478 __u32 data;
479 int ret;
480
481 data = item_udata(item);
482
483 switch (item->tag) {
484 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
485 ret = open_collection(parser, data & 0xff);
486 break;
487 case HID_MAIN_ITEM_TAG_END_COLLECTION:
488 ret = close_collection(parser);
489 break;
490 case HID_MAIN_ITEM_TAG_INPUT:
491 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
492 break;
493 case HID_MAIN_ITEM_TAG_OUTPUT:
494 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
495 break;
496 case HID_MAIN_ITEM_TAG_FEATURE:
497 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
498 break;
499 default:
500 dbg_hid("unknown main item tag 0x%x\n", item->tag);
501 ret = 0;
502 }
503
504 memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */
505
506 return ret;
507 }
508
509 /*
510 * Process a reserved item.
511 */
512
513 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
514 {
515 dbg_hid("reserved item type, tag 0x%x\n", item->tag);
516 return 0;
517 }
518
519 /*
520 * Free a report and all registered fields. The field->usage and
521 * field->value table's are allocated behind the field, so we need
522 * only to free(field) itself.
523 */
524
525 static void hid_free_report(struct hid_report *report)
526 {
527 unsigned n;
528
529 for (n = 0; n < report->maxfield; n++)
530 kfree(report->field[n]);
531 kfree(report);
532 }
533
534 /*
535 * Free a device structure, all reports, and all fields.
536 */
537
538 static void hid_device_release(struct device *dev)
539 {
540 struct hid_device *device = container_of(dev, struct hid_device, dev);
541 unsigned i, j;
542
543 for (i = 0; i < HID_REPORT_TYPES; i++) {
544 struct hid_report_enum *report_enum = device->report_enum + i;
545
546 for (j = 0; j < 256; j++) {
547 struct hid_report *report = report_enum->report_id_hash[j];
548 if (report)
549 hid_free_report(report);
550 }
551 }
552
553 kfree(device->rdesc);
554 kfree(device->collection);
555 kfree(device);
556 }
557
558 /*
559 * Fetch a report description item from the data stream. We support long
560 * items, though they are not used yet.
561 */
562
563 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
564 {
565 u8 b;
566
567 if ((end - start) <= 0)
568 return NULL;
569
570 b = *start++;
571
572 item->type = (b >> 2) & 3;
573 item->tag = (b >> 4) & 15;
574
575 if (item->tag == HID_ITEM_TAG_LONG) {
576
577 item->format = HID_ITEM_FORMAT_LONG;
578
579 if ((end - start) < 2)
580 return NULL;
581
582 item->size = *start++;
583 item->tag = *start++;
584
585 if ((end - start) < item->size)
586 return NULL;
587
588 item->data.longdata = start;
589 start += item->size;
590 return start;
591 }
592
593 item->format = HID_ITEM_FORMAT_SHORT;
594 item->size = b & 3;
595
596 switch (item->size) {
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 = 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 = get_unaligned_le32(start);
618 start = (__u8 *)((__le32 *)start + 1);
619 return start;
620 }
621
622 return NULL;
623 }
624
625 /**
626 * hid_parse_report - parse device report
627 *
628 * @device: hid device
629 * @start: report start
630 * @size: report size
631 *
632 * Parse a report description into a hid_device structure. Reports are
633 * enumerated, fields are attached to these reports.
634 * 0 returned on success, otherwise nonzero error value.
635 */
636 int hid_parse_report(struct hid_device *device, __u8 *start,
637 unsigned size)
638 {
639 struct hid_parser *parser;
640 struct hid_item item;
641 __u8 *end;
642 int ret;
643 static int (*dispatch_type[])(struct hid_parser *parser,
644 struct hid_item *item) = {
645 hid_parser_main,
646 hid_parser_global,
647 hid_parser_local,
648 hid_parser_reserved
649 };
650
651 if (device->driver->report_fixup)
652 device->driver->report_fixup(device, start, size);
653
654 device->rdesc = kmalloc(size, GFP_KERNEL);
655 if (device->rdesc == NULL)
656 return -ENOMEM;
657 memcpy(device->rdesc, start, size);
658 device->rsize = size;
659
660 parser = vmalloc(sizeof(struct hid_parser));
661 if (!parser) {
662 ret = -ENOMEM;
663 goto err;
664 }
665
666 memset(parser, 0, sizeof(struct hid_parser));
667 parser->device = device;
668
669 end = start + size;
670 ret = -EINVAL;
671 while ((start = fetch_item(start, end, &item)) != NULL) {
672
673 if (item.format != HID_ITEM_FORMAT_SHORT) {
674 dbg_hid("unexpected long global item\n");
675 goto err;
676 }
677
678 if (dispatch_type[item.type](parser, &item)) {
679 dbg_hid("item %u %u %u %u parsing failed\n",
680 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
681 goto err;
682 }
683
684 if (start == end) {
685 if (parser->collection_stack_ptr) {
686 dbg_hid("unbalanced collection at end of report description\n");
687 goto err;
688 }
689 if (parser->local.delimiter_depth) {
690 dbg_hid("unbalanced delimiter at end of report description\n");
691 goto err;
692 }
693 vfree(parser);
694 return 0;
695 }
696 }
697
698 dbg_hid("item fetching failed at offset %d\n", (int)(end - start));
699 err:
700 vfree(parser);
701 return ret;
702 }
703 EXPORT_SYMBOL_GPL(hid_parse_report);
704
705 /*
706 * Convert a signed n-bit integer to signed 32-bit integer. Common
707 * cases are done through the compiler, the screwed things has to be
708 * done by hand.
709 */
710
711 static s32 snto32(__u32 value, unsigned n)
712 {
713 switch (n) {
714 case 8: return ((__s8)value);
715 case 16: return ((__s16)value);
716 case 32: return ((__s32)value);
717 }
718 return value & (1 << (n - 1)) ? value | (-1 << n) : value;
719 }
720
721 /*
722 * Convert a signed 32-bit integer to a signed n-bit integer.
723 */
724
725 static u32 s32ton(__s32 value, unsigned n)
726 {
727 s32 a = value >> (n - 1);
728 if (a && a != -1)
729 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
730 return value & ((1 << n) - 1);
731 }
732
733 /*
734 * Extract/implement a data field from/to a little endian report (bit array).
735 *
736 * Code sort-of follows HID spec:
737 * http://www.usb.org/developers/devclass_docs/HID1_11.pdf
738 *
739 * While the USB HID spec allows unlimited length bit fields in "report
740 * descriptors", most devices never use more than 16 bits.
741 * One model of UPS is claimed to report "LINEV" as a 32-bit field.
742 * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
743 */
744
745 static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
746 {
747 u64 x;
748
749 if (n > 32)
750 printk(KERN_WARNING "HID: extract() called with n (%d) > 32! (%s)\n",
751 n, current->comm);
752
753 report += offset >> 3; /* adjust byte index */
754 offset &= 7; /* now only need bit offset into one byte */
755 x = get_unaligned_le64(report);
756 x = (x >> offset) & ((1ULL << n) - 1); /* extract bit field */
757 return (u32) x;
758 }
759
760 /*
761 * "implement" : set bits in a little endian bit stream.
762 * Same concepts as "extract" (see comments above).
763 * The data mangled in the bit stream remains in little endian
764 * order the whole time. It make more sense to talk about
765 * endianness of register values by considering a register
766 * a "cached" copy of the little endiad bit stream.
767 */
768 static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
769 {
770 u64 x;
771 u64 m = (1ULL << n) - 1;
772
773 if (n > 32)
774 printk(KERN_WARNING "HID: implement() called with n (%d) > 32! (%s)\n",
775 n, current->comm);
776
777 if (value > m)
778 printk(KERN_WARNING "HID: implement() called with too large value %d! (%s)\n",
779 value, current->comm);
780 WARN_ON(value > m);
781 value &= m;
782
783 report += offset >> 3;
784 offset &= 7;
785
786 x = get_unaligned_le64(report);
787 x &= ~(m << offset);
788 x |= ((u64)value) << offset;
789 put_unaligned_le64(x, report);
790 }
791
792 /*
793 * Search an array for a value.
794 */
795
796 static __inline__ int search(__s32 *array, __s32 value, unsigned n)
797 {
798 while (n--) {
799 if (*array++ == value)
800 return 0;
801 }
802 return -1;
803 }
804
805 /**
806 * hid_match_report - check if driver's raw_event should be called
807 *
808 * @hid: hid device
809 * @report_type: type to match against
810 *
811 * compare hid->driver->report_table->report_type to report->type
812 */
813 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
814 {
815 const struct hid_report_id *id = hid->driver->report_table;
816
817 if (!id) /* NULL means all */
818 return 1;
819
820 for (; id->report_type != HID_TERMINATOR; id++)
821 if (id->report_type == HID_ANY_ID ||
822 id->report_type == report->type)
823 return 1;
824 return 0;
825 }
826
827 /**
828 * hid_match_usage - check if driver's event should be called
829 *
830 * @hid: hid device
831 * @usage: usage to match against
832 *
833 * compare hid->driver->usage_table->usage_{type,code} to
834 * usage->usage_{type,code}
835 */
836 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
837 {
838 const struct hid_usage_id *id = hid->driver->usage_table;
839
840 if (!id) /* NULL means all */
841 return 1;
842
843 for (; id->usage_type != HID_ANY_ID - 1; id++)
844 if ((id->usage_hid == HID_ANY_ID ||
845 id->usage_hid == usage->hid) &&
846 (id->usage_type == HID_ANY_ID ||
847 id->usage_type == usage->type) &&
848 (id->usage_code == HID_ANY_ID ||
849 id->usage_code == usage->code))
850 return 1;
851 return 0;
852 }
853
854 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
855 struct hid_usage *usage, __s32 value, int interrupt)
856 {
857 struct hid_driver *hdrv = hid->driver;
858 int ret;
859
860 hid_dump_input(hid, usage, value);
861
862 if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
863 ret = hdrv->event(hid, field, usage, value);
864 if (ret != 0) {
865 if (ret < 0)
866 dbg_hid("%s's event failed with %d\n",
867 hdrv->name, ret);
868 return;
869 }
870 }
871
872 if (hid->claimed & HID_CLAIMED_INPUT)
873 hidinput_hid_event(hid, field, usage, value);
874 if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
875 hid->hiddev_hid_event(hid, field, usage, value);
876 }
877
878 /*
879 * Analyse a received field, and fetch the data from it. The field
880 * content is stored for next report processing (we do differential
881 * reporting to the layer).
882 */
883
884 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
885 __u8 *data, int interrupt)
886 {
887 unsigned n;
888 unsigned count = field->report_count;
889 unsigned offset = field->report_offset;
890 unsigned size = field->report_size;
891 __s32 min = field->logical_minimum;
892 __s32 max = field->logical_maximum;
893 __s32 *value;
894
895 if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC)))
896 return;
897
898 for (n = 0; n < count; n++) {
899
900 value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
901 extract(data, offset + n * size, size);
902
903 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
904 && value[n] >= min && value[n] <= max
905 && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
906 goto exit;
907 }
908
909 for (n = 0; n < count; n++) {
910
911 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
912 hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
913 continue;
914 }
915
916 if (field->value[n] >= min && field->value[n] <= max
917 && field->usage[field->value[n] - min].hid
918 && search(value, field->value[n], count))
919 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
920
921 if (value[n] >= min && value[n] <= max
922 && field->usage[value[n] - min].hid
923 && search(field->value, value[n], count))
924 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
925 }
926
927 memcpy(field->value, value, count * sizeof(__s32));
928 exit:
929 kfree(value);
930 }
931
932 /*
933 * Output the field into the report.
934 */
935
936 static void hid_output_field(struct hid_field *field, __u8 *data)
937 {
938 unsigned count = field->report_count;
939 unsigned offset = field->report_offset;
940 unsigned size = field->report_size;
941 unsigned bitsused = offset + count * size;
942 unsigned n;
943
944 /* make sure the unused bits in the last byte are zeros */
945 if (count > 0 && size > 0 && (bitsused % 8) != 0)
946 data[(bitsused-1)/8] &= (1 << (bitsused % 8)) - 1;
947
948 for (n = 0; n < count; n++) {
949 if (field->logical_minimum < 0) /* signed values */
950 implement(data, offset + n * size, size, s32ton(field->value[n], size));
951 else /* unsigned values */
952 implement(data, offset + n * size, size, field->value[n]);
953 }
954 }
955
956 /*
957 * Create a report.
958 */
959
960 void hid_output_report(struct hid_report *report, __u8 *data)
961 {
962 unsigned n;
963
964 if (report->id > 0)
965 *data++ = report->id;
966
967 for (n = 0; n < report->maxfield; n++)
968 hid_output_field(report->field[n], data);
969 }
970 EXPORT_SYMBOL_GPL(hid_output_report);
971
972 /*
973 * Set a field value. The report this field belongs to has to be
974 * created and transferred to the device, to set this value in the
975 * device.
976 */
977
978 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
979 {
980 unsigned size = field->report_size;
981
982 hid_dump_input(field->report->device, field->usage + offset, value);
983
984 if (offset >= field->report_count) {
985 dbg_hid("offset (%d) exceeds report_count (%d)\n", offset, field->report_count);
986 return -1;
987 }
988 if (field->logical_minimum < 0) {
989 if (value != snto32(s32ton(value, size), size)) {
990 dbg_hid("value %d is out of range\n", value);
991 return -1;
992 }
993 }
994 field->value[offset] = value;
995 return 0;
996 }
997 EXPORT_SYMBOL_GPL(hid_set_field);
998
999 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1000 const u8 *data)
1001 {
1002 struct hid_report *report;
1003 unsigned int n = 0; /* Normally report number is 0 */
1004
1005 /* Device uses numbered reports, data[0] is report number */
1006 if (report_enum->numbered)
1007 n = *data;
1008
1009 report = report_enum->report_id_hash[n];
1010 if (report == NULL)
1011 dbg_hid("undefined report_id %u received\n", n);
1012
1013 return report;
1014 }
1015
1016 void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1017 int interrupt)
1018 {
1019 struct hid_report_enum *report_enum = hid->report_enum + type;
1020 struct hid_report *report;
1021 unsigned int a;
1022 int rsize, csize = size;
1023 u8 *cdata = data;
1024
1025 report = hid_get_report(report_enum, data);
1026 if (!report)
1027 return;
1028
1029 if (report_enum->numbered) {
1030 cdata++;
1031 csize--;
1032 }
1033
1034 rsize = ((report->size - 1) >> 3) + 1;
1035
1036 if (csize < rsize) {
1037 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1038 csize, rsize);
1039 memset(cdata + csize, 0, rsize - csize);
1040 }
1041
1042 if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1043 hid->hiddev_report_event(hid, report);
1044 if (hid->claimed & HID_CLAIMED_HIDRAW) {
1045 /* numbered reports need to be passed with the report num */
1046 if (report_enum->numbered)
1047 hidraw_report_event(hid, data - 1, size + 1);
1048 else
1049 hidraw_report_event(hid, data, size);
1050 }
1051
1052 for (a = 0; a < report->maxfield; a++)
1053 hid_input_field(hid, report->field[a], cdata, interrupt);
1054
1055 if (hid->claimed & HID_CLAIMED_INPUT)
1056 hidinput_report_event(hid, report);
1057 }
1058 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1059
1060 /**
1061 * hid_input_report - report data from lower layer (usb, bt...)
1062 *
1063 * @hid: hid device
1064 * @type: HID report type (HID_*_REPORT)
1065 * @data: report contents
1066 * @size: size of data parameter
1067 * @interrupt: distinguish between interrupt and control transfers
1068 *
1069 * This is data entry for lower layers.
1070 */
1071 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1072 {
1073 struct hid_report_enum *report_enum;
1074 struct hid_driver *hdrv;
1075 struct hid_report *report;
1076 char *buf;
1077 unsigned int i;
1078 int ret;
1079
1080 if (!hid || !hid->driver)
1081 return -ENODEV;
1082 report_enum = hid->report_enum + type;
1083 hdrv = hid->driver;
1084
1085 if (!size) {
1086 dbg_hid("empty report\n");
1087 return -1;
1088 }
1089
1090 buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
1091
1092 if (!buf) {
1093 report = hid_get_report(report_enum, data);
1094 goto nomem;
1095 }
1096
1097 snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1098 "\nreport (size %u) (%snumbered)\n", size, report_enum->numbered ? "" : "un");
1099 hid_debug_event(hid, buf);
1100
1101 report = hid_get_report(report_enum, data);
1102 if (!report) {
1103 kfree(buf);
1104 return -1;
1105 }
1106
1107 /* dump the report */
1108 snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1109 "report %d (size %u) = ", report->id, size);
1110 hid_debug_event(hid, buf);
1111 for (i = 0; i < size; i++) {
1112 snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1113 " %02x", data[i]);
1114 hid_debug_event(hid, buf);
1115 }
1116 hid_debug_event(hid, "\n");
1117
1118 kfree(buf);
1119
1120 nomem:
1121 if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1122 ret = hdrv->raw_event(hid, report, data, size);
1123 if (ret != 0)
1124 return ret < 0 ? ret : 0;
1125 }
1126
1127 hid_report_raw_event(hid, type, data, size, interrupt);
1128
1129 return 0;
1130 }
1131 EXPORT_SYMBOL_GPL(hid_input_report);
1132
1133 static bool hid_match_one_id(struct hid_device *hdev,
1134 const struct hid_device_id *id)
1135 {
1136 return id->bus == hdev->bus &&
1137 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1138 (id->product == HID_ANY_ID || id->product == hdev->product);
1139 }
1140
1141 static const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1142 const struct hid_device_id *id)
1143 {
1144 for (; id->bus; id++)
1145 if (hid_match_one_id(hdev, id))
1146 return id;
1147
1148 return NULL;
1149 }
1150
1151 static const struct hid_device_id hid_hiddev_list[] = {
1152 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1153 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1154 { }
1155 };
1156
1157 static bool hid_hiddev(struct hid_device *hdev)
1158 {
1159 return !!hid_match_id(hdev, hid_hiddev_list);
1160 }
1161
1162 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1163 {
1164 static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1165 "Joystick", "Gamepad", "Keyboard", "Keypad",
1166 "Multi-Axis Controller"
1167 };
1168 const char *type, *bus;
1169 char buf[64];
1170 unsigned int i;
1171 int len;
1172
1173 if (hdev->bus != BUS_USB)
1174 connect_mask &= ~HID_CONNECT_HIDDEV;
1175 if (hid_hiddev(hdev))
1176 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1177
1178 if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1179 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1180 hdev->claimed |= HID_CLAIMED_INPUT;
1181 if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1182 !hdev->hiddev_connect(hdev,
1183 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1184 hdev->claimed |= HID_CLAIMED_HIDDEV;
1185 if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1186 hdev->claimed |= HID_CLAIMED_HIDRAW;
1187
1188 if (!hdev->claimed) {
1189 dev_err(&hdev->dev, "claimed by neither input, hiddev nor "
1190 "hidraw\n");
1191 return -ENODEV;
1192 }
1193
1194 if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1195 (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1196 hdev->ff_init(hdev);
1197
1198 len = 0;
1199 if (hdev->claimed & HID_CLAIMED_INPUT)
1200 len += sprintf(buf + len, "input");
1201 if (hdev->claimed & HID_CLAIMED_HIDDEV)
1202 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1203 hdev->minor);
1204 if (hdev->claimed & HID_CLAIMED_HIDRAW)
1205 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1206 ((struct hidraw *)hdev->hidraw)->minor);
1207
1208 type = "Device";
1209 for (i = 0; i < hdev->maxcollection; i++) {
1210 struct hid_collection *col = &hdev->collection[i];
1211 if (col->type == HID_COLLECTION_APPLICATION &&
1212 (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1213 (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1214 type = types[col->usage & 0xffff];
1215 break;
1216 }
1217 }
1218
1219 switch (hdev->bus) {
1220 case BUS_USB:
1221 bus = "USB";
1222 break;
1223 case BUS_BLUETOOTH:
1224 bus = "BLUETOOTH";
1225 break;
1226 default:
1227 bus = "<UNKNOWN>";
1228 }
1229
1230 dev_info(&hdev->dev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1231 buf, bus, hdev->version >> 8, hdev->version & 0xff,
1232 type, hdev->name, hdev->phys);
1233
1234 return 0;
1235 }
1236 EXPORT_SYMBOL_GPL(hid_connect);
1237
1238 void hid_disconnect(struct hid_device *hdev)
1239 {
1240 if (hdev->claimed & HID_CLAIMED_INPUT)
1241 hidinput_disconnect(hdev);
1242 if (hdev->claimed & HID_CLAIMED_HIDDEV)
1243 hdev->hiddev_disconnect(hdev);
1244 if (hdev->claimed & HID_CLAIMED_HIDRAW)
1245 hidraw_disconnect(hdev);
1246 }
1247 EXPORT_SYMBOL_GPL(hid_disconnect);
1248
1249 /* a list of devices for which there is a specialized driver on HID bus */
1250 static const struct hid_device_id hid_blacklist[] = {
1251 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1252 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1253 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) },
1254 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1255 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1256 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1257 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1258 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1259 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1260 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1261 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1262 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1263 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1264 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1265 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1266 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1267 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1268 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1269 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1270 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1271 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1272 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1273 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1274 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1275 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1276 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1277 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1278 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1279 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1280 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1281 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1282 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1283 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1284 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1285 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1286 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1287 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1288 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1289 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1290 { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1291 { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1292 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1293 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1294 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1295 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1296 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1297 { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1298 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1299 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1300 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1301 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1302 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1303 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1304 { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1305 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1306 { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1307 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1308 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1309 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1310 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1311 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1312 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1313 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1314 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1315 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1316 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1317 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1318 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1319 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1320 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1321 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1322 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1323 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1324 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1325 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1326 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1327 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1328 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1329 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1330 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1331 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1332 { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1333 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1334 { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1335 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1336 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1337 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1338 { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1339 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1340 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1341 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1342 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1343 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1344 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1345 { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1346 { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1347 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1348 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1349 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1350 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1351
1352 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1353 { }
1354 };
1355
1356 struct hid_dynid {
1357 struct list_head list;
1358 struct hid_device_id id;
1359 };
1360
1361 /**
1362 * store_new_id - add a new HID device ID to this driver and re-probe devices
1363 * @driver: target device driver
1364 * @buf: buffer for scanning device ID data
1365 * @count: input size
1366 *
1367 * Adds a new dynamic hid device ID to this driver,
1368 * and causes the driver to probe for all devices again.
1369 */
1370 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1371 size_t count)
1372 {
1373 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1374 struct hid_dynid *dynid;
1375 __u32 bus, vendor, product;
1376 unsigned long driver_data = 0;
1377 int ret;
1378
1379 ret = sscanf(buf, "%x %x %x %lx",
1380 &bus, &vendor, &product, &driver_data);
1381 if (ret < 3)
1382 return -EINVAL;
1383
1384 dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1385 if (!dynid)
1386 return -ENOMEM;
1387
1388 dynid->id.bus = bus;
1389 dynid->id.vendor = vendor;
1390 dynid->id.product = product;
1391 dynid->id.driver_data = driver_data;
1392
1393 spin_lock(&hdrv->dyn_lock);
1394 list_add_tail(&dynid->list, &hdrv->dyn_list);
1395 spin_unlock(&hdrv->dyn_lock);
1396
1397 ret = 0;
1398 if (get_driver(&hdrv->driver)) {
1399 ret = driver_attach(&hdrv->driver);
1400 put_driver(&hdrv->driver);
1401 }
1402
1403 return ret ? : count;
1404 }
1405 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1406
1407 static void hid_free_dynids(struct hid_driver *hdrv)
1408 {
1409 struct hid_dynid *dynid, *n;
1410
1411 spin_lock(&hdrv->dyn_lock);
1412 list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1413 list_del(&dynid->list);
1414 kfree(dynid);
1415 }
1416 spin_unlock(&hdrv->dyn_lock);
1417 }
1418
1419 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1420 struct hid_driver *hdrv)
1421 {
1422 struct hid_dynid *dynid;
1423
1424 spin_lock(&hdrv->dyn_lock);
1425 list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1426 if (hid_match_one_id(hdev, &dynid->id)) {
1427 spin_unlock(&hdrv->dyn_lock);
1428 return &dynid->id;
1429 }
1430 }
1431 spin_unlock(&hdrv->dyn_lock);
1432
1433 return hid_match_id(hdev, hdrv->id_table);
1434 }
1435
1436 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1437 {
1438 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1439 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1440
1441 if (!hid_match_device(hdev, hdrv))
1442 return 0;
1443
1444 /* generic wants all non-blacklisted */
1445 if (!strncmp(hdrv->name, "generic-", 8))
1446 return !hid_match_id(hdev, hid_blacklist);
1447
1448 return 1;
1449 }
1450
1451 static int hid_device_probe(struct device *dev)
1452 {
1453 struct hid_driver *hdrv = container_of(dev->driver,
1454 struct hid_driver, driver);
1455 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1456 const struct hid_device_id *id;
1457 int ret = 0;
1458
1459 if (!hdev->driver) {
1460 id = hid_match_device(hdev, hdrv);
1461 if (id == NULL)
1462 return -ENODEV;
1463
1464 hdev->driver = hdrv;
1465 if (hdrv->probe) {
1466 ret = hdrv->probe(hdev, id);
1467 } else { /* default probe */
1468 ret = hid_parse(hdev);
1469 if (!ret)
1470 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1471 }
1472 if (ret)
1473 hdev->driver = NULL;
1474 }
1475 return ret;
1476 }
1477
1478 static int hid_device_remove(struct device *dev)
1479 {
1480 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1481 struct hid_driver *hdrv = hdev->driver;
1482
1483 if (hdrv) {
1484 if (hdrv->remove)
1485 hdrv->remove(hdev);
1486 else /* default remove */
1487 hid_hw_stop(hdev);
1488 hdev->driver = NULL;
1489 }
1490
1491 return 0;
1492 }
1493
1494 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1495 {
1496 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1497
1498 if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
1499 hdev->bus, hdev->vendor, hdev->product))
1500 return -ENOMEM;
1501
1502 if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
1503 return -ENOMEM;
1504
1505 if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
1506 return -ENOMEM;
1507
1508 if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
1509 return -ENOMEM;
1510
1511 if (add_uevent_var(env, "MODALIAS=hid:b%04Xv%08Xp%08X",
1512 hdev->bus, hdev->vendor, hdev->product))
1513 return -ENOMEM;
1514
1515 return 0;
1516 }
1517
1518 static struct bus_type hid_bus_type = {
1519 .name = "hid",
1520 .match = hid_bus_match,
1521 .probe = hid_device_probe,
1522 .remove = hid_device_remove,
1523 .uevent = hid_uevent,
1524 };
1525
1526 /* a list of devices that shouldn't be handled by HID core at all */
1527 static const struct hid_device_id hid_ignore_list[] = {
1528 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
1529 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
1530 { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
1531 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
1532 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
1533 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
1534 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
1535 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
1536 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
1537 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
1538 { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
1539 { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
1540 { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM)},
1541 { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM2)},
1542 { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
1543 { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
1544 { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
1545 { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
1546 { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
1547 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
1548 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
1549 { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
1550 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
1551 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
1552 { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
1553 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
1554 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
1555 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0003) },
1556 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
1557 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
1558 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
1559 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
1560 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
1561 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
1562 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
1563 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
1564 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
1565 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
1566 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
1567 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
1568 { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
1569 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
1570 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
1571 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
1572 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
1573 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
1574 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
1575 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
1576 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
1577 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
1578 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
1579 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
1580 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
1581 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
1582 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
1583 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
1584 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
1585 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
1586 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
1587 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
1588 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
1589 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
1590 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
1591 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
1592 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
1593 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
1594 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
1595 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
1596 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
1597 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
1598 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
1599 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
1600 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
1601 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
1602 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
1603 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
1604 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
1605 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
1606 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
1607 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
1608 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
1609 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
1610 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
1611 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
1612 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
1613 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
1614 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
1615 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
1616 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
1617 { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
1618 { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
1619 { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
1620 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
1621 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
1622 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
1623 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
1624 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
1625 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
1626 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
1627 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
1628 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY1) },
1629 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
1630 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
1631 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
1632 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
1633 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
1634 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
1635 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
1636 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
1637 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
1638 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
1639 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
1640 { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
1641 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
1642 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
1643 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
1644 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
1645 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
1646 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
1647 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
1648 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
1649 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
1650 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
1651 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
1652 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
1653 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
1654 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
1655 { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
1656 { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
1657 { HID_USB_DEVICE(USB_VENDOR_ID_TENX, USB_DEVICE_ID_TENX_IBUDDY1) },
1658 { HID_USB_DEVICE(USB_VENDOR_ID_TENX, USB_DEVICE_ID_TENX_IBUDDY2) },
1659 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
1660 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
1661 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
1662 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
1663 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
1664 { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
1665 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
1666 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
1667 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
1668 { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
1669 { }
1670 };
1671
1672 /**
1673 * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
1674 *
1675 * There are composite devices for which we want to ignore only a certain
1676 * interface. This is a list of devices for which only the mouse interface will
1677 * be ignored. This allows a dedicated driver to take care of the interface.
1678 */
1679 static const struct hid_device_id hid_mouse_ignore_list[] = {
1680 /* appletouch driver */
1681 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1682 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1683 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1684 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1685 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1686 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1687 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1688 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1689 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1690 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1691 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1692 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1693 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1694 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1695 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1696 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1697 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1698 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1699 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1700 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1701 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1702 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1703 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1704 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1705 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1706 { }
1707 };
1708
1709 static bool hid_ignore(struct hid_device *hdev)
1710 {
1711 switch (hdev->vendor) {
1712 case USB_VENDOR_ID_CODEMERCS:
1713 /* ignore all Code Mercenaries IOWarrior devices */
1714 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
1715 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
1716 return true;
1717 break;
1718 case USB_VENDOR_ID_LOGITECH:
1719 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
1720 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
1721 return true;
1722 break;
1723 case USB_VENDOR_ID_SOUNDGRAPH:
1724 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
1725 hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
1726 return true;
1727 break;
1728 }
1729
1730 if (hdev->type == HID_TYPE_USBMOUSE &&
1731 hid_match_id(hdev, hid_mouse_ignore_list))
1732 return true;
1733
1734 return !!hid_match_id(hdev, hid_ignore_list);
1735 }
1736
1737 int hid_add_device(struct hid_device *hdev)
1738 {
1739 static atomic_t id = ATOMIC_INIT(0);
1740 int ret;
1741
1742 if (WARN_ON(hdev->status & HID_STAT_ADDED))
1743 return -EBUSY;
1744
1745 /* we need to kill them here, otherwise they will stay allocated to
1746 * wait for coming driver */
1747 if (hid_ignore(hdev))
1748 return -ENODEV;
1749
1750 /* XXX hack, any other cleaner solution after the driver core
1751 * is converted to allow more than 20 bytes as the device name? */
1752 dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
1753 hdev->vendor, hdev->product, atomic_inc_return(&id));
1754
1755 ret = device_add(&hdev->dev);
1756 if (!ret)
1757 hdev->status |= HID_STAT_ADDED;
1758
1759 hid_debug_register(hdev, dev_name(&hdev->dev));
1760
1761 return ret;
1762 }
1763 EXPORT_SYMBOL_GPL(hid_add_device);
1764
1765 /**
1766 * hid_allocate_device - allocate new hid device descriptor
1767 *
1768 * Allocate and initialize hid device, so that hid_destroy_device might be
1769 * used to free it.
1770 *
1771 * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
1772 * error value.
1773 */
1774 struct hid_device *hid_allocate_device(void)
1775 {
1776 struct hid_device *hdev;
1777 unsigned int i;
1778 int ret = -ENOMEM;
1779
1780 hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
1781 if (hdev == NULL)
1782 return ERR_PTR(ret);
1783
1784 device_initialize(&hdev->dev);
1785 hdev->dev.release = hid_device_release;
1786 hdev->dev.bus = &hid_bus_type;
1787
1788 hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
1789 sizeof(struct hid_collection), GFP_KERNEL);
1790 if (hdev->collection == NULL)
1791 goto err;
1792 hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
1793
1794 for (i = 0; i < HID_REPORT_TYPES; i++)
1795 INIT_LIST_HEAD(&hdev->report_enum[i].report_list);
1796
1797 init_waitqueue_head(&hdev->debug_wait);
1798 INIT_LIST_HEAD(&hdev->debug_list);
1799
1800 return hdev;
1801 err:
1802 put_device(&hdev->dev);
1803 return ERR_PTR(ret);
1804 }
1805 EXPORT_SYMBOL_GPL(hid_allocate_device);
1806
1807 static void hid_remove_device(struct hid_device *hdev)
1808 {
1809 if (hdev->status & HID_STAT_ADDED) {
1810 device_del(&hdev->dev);
1811 hid_debug_unregister(hdev);
1812 hdev->status &= ~HID_STAT_ADDED;
1813 }
1814 }
1815
1816 /**
1817 * hid_destroy_device - free previously allocated device
1818 *
1819 * @hdev: hid device
1820 *
1821 * If you allocate hid_device through hid_allocate_device, you should ever
1822 * free by this function.
1823 */
1824 void hid_destroy_device(struct hid_device *hdev)
1825 {
1826 hid_remove_device(hdev);
1827 put_device(&hdev->dev);
1828 }
1829 EXPORT_SYMBOL_GPL(hid_destroy_device);
1830
1831 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
1832 const char *mod_name)
1833 {
1834 int ret;
1835
1836 hdrv->driver.name = hdrv->name;
1837 hdrv->driver.bus = &hid_bus_type;
1838 hdrv->driver.owner = owner;
1839 hdrv->driver.mod_name = mod_name;
1840
1841 INIT_LIST_HEAD(&hdrv->dyn_list);
1842 spin_lock_init(&hdrv->dyn_lock);
1843
1844 ret = driver_register(&hdrv->driver);
1845 if (ret)
1846 return ret;
1847
1848 ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
1849 if (ret)
1850 driver_unregister(&hdrv->driver);
1851
1852 return ret;
1853 }
1854 EXPORT_SYMBOL_GPL(__hid_register_driver);
1855
1856 void hid_unregister_driver(struct hid_driver *hdrv)
1857 {
1858 driver_remove_file(&hdrv->driver, &driver_attr_new_id);
1859 driver_unregister(&hdrv->driver);
1860 hid_free_dynids(hdrv);
1861 }
1862 EXPORT_SYMBOL_GPL(hid_unregister_driver);
1863
1864 int hid_check_keys_pressed(struct hid_device *hid)
1865 {
1866 struct hid_input *hidinput;
1867 int i;
1868
1869 if (!(hid->claimed & HID_CLAIMED_INPUT))
1870 return 0;
1871
1872 list_for_each_entry(hidinput, &hid->inputs, list) {
1873 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
1874 if (hidinput->input->key[i])
1875 return 1;
1876 }
1877
1878 return 0;
1879 }
1880
1881 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
1882
1883 static int __init hid_init(void)
1884 {
1885 int ret;
1886
1887 if (hid_debug)
1888 printk(KERN_WARNING "HID: hid_debug is now used solely for parser and driver debugging.\n"
1889 "HID: debugfs is now used for inspecting the device (report descriptor, reports)\n");
1890
1891 ret = bus_register(&hid_bus_type);
1892 if (ret) {
1893 printk(KERN_ERR "HID: can't register hid bus\n");
1894 goto err;
1895 }
1896
1897 ret = hidraw_init();
1898 if (ret)
1899 goto err_bus;
1900
1901 hid_debug_init();
1902
1903 return 0;
1904 err_bus:
1905 bus_unregister(&hid_bus_type);
1906 err:
1907 return ret;
1908 }
1909
1910 static void __exit hid_exit(void)
1911 {
1912 hid_debug_exit();
1913 hidraw_exit();
1914 bus_unregister(&hid_bus_type);
1915 }
1916
1917 module_init(hid_init);
1918 module_exit(hid_exit);
1919
1920 MODULE_AUTHOR("Andreas Gal");
1921 MODULE_AUTHOR("Vojtech Pavlik");
1922 MODULE_AUTHOR("Jiri Kosina");
1923 MODULE_LICENSE(DRIVER_LICENSE);
1924
mm of the moment repository