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fuse: prevent fuse_put_request on invalid pointer
[linux-2.6/verdex.git] / drivers / hid / hid-core.c
blob047844df992a91ac997bf092048e1a12ede9a40e
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_VERSION "v2.6"
43 #define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik, Jiri Kosina"
44 #define DRIVER_DESC "HID core driver"
45 #define DRIVER_LICENSE "GPL"
46
47 #ifdef CONFIG_HID_DEBUG
48 int hid_debug = 0;
49 module_param_named(debug, hid_debug, int, 0600);
50 MODULE_PARM_DESC(debug, "HID debugging (0=off, 1=probing info, 2=continuous data dumping)");
51 EXPORT_SYMBOL_GPL(hid_debug);
52 #endif
53
54 /*
55 * Register a new report for a device.
56 */
57
58 static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
59 {
60 struct hid_report_enum *report_enum = device->report_enum + type;
61 struct hid_report *report;
62
63 if (report_enum->report_id_hash[id])
64 return report_enum->report_id_hash[id];
65
66 if (!(report = kzalloc(sizeof(struct hid_report), GFP_KERNEL)))
67 return NULL;
68
69 if (id != 0)
70 report_enum->numbered = 1;
71
72 report->id = id;
73 report->type = type;
74 report->size = 0;
75 report->device = device;
76 report_enum->report_id_hash[id] = report;
77
78 list_add_tail(&report->list, &report_enum->report_list);
79
80 return report;
81 }
82
83 /*
84 * Register a new field for this report.
85 */
86
87 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
88 {
89 struct hid_field *field;
90
91 if (report->maxfield == HID_MAX_FIELDS) {
92 dbg_hid("too many fields in report\n");
93 return NULL;
94 }
95
96 if (!(field = kzalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
97 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
98
99 field->index = report->maxfield++;
100 report->field[field->index] = field;
101 field->usage = (struct hid_usage *)(field + 1);
102 field->value = (s32 *)(field->usage + usages);
103 field->report = report;
104
105 return field;
106 }
107
108 /*
109 * Open a collection. The type/usage is pushed on the stack.
110 */
111
112 static int open_collection(struct hid_parser *parser, unsigned type)
113 {
114 struct hid_collection *collection;
115 unsigned usage;
116
117 usage = parser->local.usage[0];
118
119 if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
120 dbg_hid("collection stack overflow\n");
121 return -1;
122 }
123
124 if (parser->device->maxcollection == parser->device->collection_size) {
125 collection = kmalloc(sizeof(struct hid_collection) *
126 parser->device->collection_size * 2, GFP_KERNEL);
127 if (collection == NULL) {
128 dbg_hid("failed to reallocate collection array\n");
129 return -1;
130 }
131 memcpy(collection, parser->device->collection,
132 sizeof(struct hid_collection) *
133 parser->device->collection_size);
134 memset(collection + parser->device->collection_size, 0,
135 sizeof(struct hid_collection) *
136 parser->device->collection_size);
137 kfree(parser->device->collection);
138 parser->device->collection = collection;
139 parser->device->collection_size *= 2;
140 }
141
142 parser->collection_stack[parser->collection_stack_ptr++] =
143 parser->device->maxcollection;
144
145 collection = parser->device->collection +
146 parser->device->maxcollection++;
147 collection->type = type;
148 collection->usage = usage;
149 collection->level = parser->collection_stack_ptr - 1;
150
151 if (type == HID_COLLECTION_APPLICATION)
152 parser->device->maxapplication++;
153
154 return 0;
155 }
156
157 /*
158 * Close a collection.
159 */
160
161 static int close_collection(struct hid_parser *parser)
162 {
163 if (!parser->collection_stack_ptr) {
164 dbg_hid("collection stack underflow\n");
165 return -1;
166 }
167 parser->collection_stack_ptr--;
168 return 0;
169 }
170
171 /*
172 * Climb up the stack, search for the specified collection type
173 * and return the usage.
174 */
175
176 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
177 {
178 int n;
179 for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
180 if (parser->device->collection[parser->collection_stack[n]].type == type)
181 return parser->device->collection[parser->collection_stack[n]].usage;
182 return 0; /* we know nothing about this usage type */
183 }
184
185 /*
186 * Add a usage to the temporary parser table.
187 */
188
189 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
190 {
191 if (parser->local.usage_index >= HID_MAX_USAGES) {
192 dbg_hid("usage index exceeded\n");
193 return -1;
194 }
195 parser->local.usage[parser->local.usage_index] = usage;
196 parser->local.collection_index[parser->local.usage_index] =
197 parser->collection_stack_ptr ?
198 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
199 parser->local.usage_index++;
200 return 0;
201 }
202
203 /*
204 * Register a new field for this report.
205 */
206
207 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
208 {
209 struct hid_report *report;
210 struct hid_field *field;
211 int usages;
212 unsigned offset;
213 int i;
214
215 if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
216 dbg_hid("hid_register_report failed\n");
217 return -1;
218 }
219
220 if (parser->global.logical_maximum < parser->global.logical_minimum) {
221 dbg_hid("logical range invalid %d %d\n", parser->global.logical_minimum, parser->global.logical_maximum);
222 return -1;
223 }
224
225 offset = report->size;
226 report->size += parser->global.report_size * parser->global.report_count;
227
228 if (!parser->local.usage_index) /* Ignore padding fields */
229 return 0;
230
231 usages = max_t(int, parser->local.usage_index, parser->global.report_count);
232
233 if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
234 return 0;
235
236 field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
237 field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
238 field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
239
240 for (i = 0; i < usages; i++) {
241 int j = i;
242 /* Duplicate the last usage we parsed if we have excess values */
243 if (i >= parser->local.usage_index)
244 j = parser->local.usage_index - 1;
245 field->usage[i].hid = parser->local.usage[j];
246 field->usage[i].collection_index =
247 parser->local.collection_index[j];
248 }
249
250 field->maxusage = usages;
251 field->flags = flags;
252 field->report_offset = offset;
253 field->report_type = report_type;
254 field->report_size = parser->global.report_size;
255 field->report_count = parser->global.report_count;
256 field->logical_minimum = parser->global.logical_minimum;
257 field->logical_maximum = parser->global.logical_maximum;
258 field->physical_minimum = parser->global.physical_minimum;
259 field->physical_maximum = parser->global.physical_maximum;
260 field->unit_exponent = parser->global.unit_exponent;
261 field->unit = parser->global.unit;
262
263 return 0;
264 }
265
266 /*
267 * Read data value from item.
268 */
269
270 static u32 item_udata(struct hid_item *item)
271 {
272 switch (item->size) {
273 case 1: return item->data.u8;
274 case 2: return item->data.u16;
275 case 4: return item->data.u32;
276 }
277 return 0;
278 }
279
280 static s32 item_sdata(struct hid_item *item)
281 {
282 switch (item->size) {
283 case 1: return item->data.s8;
284 case 2: return item->data.s16;
285 case 4: return item->data.s32;
286 }
287 return 0;
288 }
289
290 /*
291 * Process a global item.
292 */
293
294 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
295 {
296 switch (item->tag) {
297 case HID_GLOBAL_ITEM_TAG_PUSH:
298
299 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
300 dbg_hid("global enviroment stack overflow\n");
301 return -1;
302 }
303
304 memcpy(parser->global_stack + parser->global_stack_ptr++,
305 &parser->global, sizeof(struct hid_global));
306 return 0;
307
308 case HID_GLOBAL_ITEM_TAG_POP:
309
310 if (!parser->global_stack_ptr) {
311 dbg_hid("global enviroment stack underflow\n");
312 return -1;
313 }
314
315 memcpy(&parser->global, parser->global_stack +
316 --parser->global_stack_ptr, sizeof(struct hid_global));
317 return 0;
318
319 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
320 parser->global.usage_page = item_udata(item);
321 return 0;
322
323 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
324 parser->global.logical_minimum = item_sdata(item);
325 return 0;
326
327 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
328 if (parser->global.logical_minimum < 0)
329 parser->global.logical_maximum = item_sdata(item);
330 else
331 parser->global.logical_maximum = item_udata(item);
332 return 0;
333
334 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
335 parser->global.physical_minimum = item_sdata(item);
336 return 0;
337
338 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
339 if (parser->global.physical_minimum < 0)
340 parser->global.physical_maximum = item_sdata(item);
341 else
342 parser->global.physical_maximum = item_udata(item);
343 return 0;
344
345 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
346 parser->global.unit_exponent = item_sdata(item);
347 return 0;
348
349 case HID_GLOBAL_ITEM_TAG_UNIT:
350 parser->global.unit = item_udata(item);
351 return 0;
352
353 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
354 parser->global.report_size = item_udata(item);
355 if (parser->global.report_size > 32) {
356 dbg_hid("invalid report_size %d\n",
357 parser->global.report_size);
358 return -1;
359 }
360 return 0;
361
362 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
363 parser->global.report_count = item_udata(item);
364 if (parser->global.report_count > HID_MAX_USAGES) {
365 dbg_hid("invalid report_count %d\n",
366 parser->global.report_count);
367 return -1;
368 }
369 return 0;
370
371 case HID_GLOBAL_ITEM_TAG_REPORT_ID:
372 parser->global.report_id = item_udata(item);
373 if (parser->global.report_id == 0) {
374 dbg_hid("report_id 0 is invalid\n");
375 return -1;
376 }
377 return 0;
378
379 default:
380 dbg_hid("unknown global tag 0x%x\n", item->tag);
381 return -1;
382 }
383 }
384
385 /*
386 * Process a local item.
387 */
388
389 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
390 {
391 __u32 data;
392 unsigned n;
393
394 if (item->size == 0) {
395 dbg_hid("item data expected for local item\n");
396 return -1;
397 }
398
399 data = item_udata(item);
400
401 switch (item->tag) {
402 case HID_LOCAL_ITEM_TAG_DELIMITER:
403
404 if (data) {
405 /*
406 * We treat items before the first delimiter
407 * as global to all usage sets (branch 0).
408 * In the moment we process only these global
409 * items and the first delimiter set.
410 */
411 if (parser->local.delimiter_depth != 0) {
412 dbg_hid("nested delimiters\n");
413 return -1;
414 }
415 parser->local.delimiter_depth++;
416 parser->local.delimiter_branch++;
417 } else {
418 if (parser->local.delimiter_depth < 1) {
419 dbg_hid("bogus close delimiter\n");
420 return -1;
421 }
422 parser->local.delimiter_depth--;
423 }
424 return 1;
425
426 case HID_LOCAL_ITEM_TAG_USAGE:
427
428 if (parser->local.delimiter_branch > 1) {
429 dbg_hid("alternative usage ignored\n");
430 return 0;
431 }
432
433 if (item->size <= 2)
434 data = (parser->global.usage_page << 16) + data;
435
436 return hid_add_usage(parser, data);
437
438 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
439
440 if (parser->local.delimiter_branch > 1) {
441 dbg_hid("alternative usage ignored\n");
442 return 0;
443 }
444
445 if (item->size <= 2)
446 data = (parser->global.usage_page << 16) + data;
447
448 parser->local.usage_minimum = data;
449 return 0;
450
451 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
452
453 if (parser->local.delimiter_branch > 1) {
454 dbg_hid("alternative usage ignored\n");
455 return 0;
456 }
457
458 if (item->size <= 2)
459 data = (parser->global.usage_page << 16) + data;
460
461 for (n = parser->local.usage_minimum; n <= data; n++)
462 if (hid_add_usage(parser, n)) {
463 dbg_hid("hid_add_usage failed\n");
464 return -1;
465 }
466 return 0;
467
468 default:
469
470 dbg_hid("unknown local item tag 0x%x\n", item->tag);
471 return 0;
472 }
473 return 0;
474 }
475
476 /*
477 * Process a main item.
478 */
479
480 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
481 {
482 __u32 data;
483 int ret;
484
485 data = item_udata(item);
486
487 switch (item->tag) {
488 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
489 ret = open_collection(parser, data & 0xff);
490 break;
491 case HID_MAIN_ITEM_TAG_END_COLLECTION:
492 ret = close_collection(parser);
493 break;
494 case HID_MAIN_ITEM_TAG_INPUT:
495 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
496 break;
497 case HID_MAIN_ITEM_TAG_OUTPUT:
498 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
499 break;
500 case HID_MAIN_ITEM_TAG_FEATURE:
501 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
502 break;
503 default:
504 dbg_hid("unknown main item tag 0x%x\n", item->tag);
505 ret = 0;
506 }
507
508 memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */
509
510 return ret;
511 }
512
513 /*
514 * Process a reserved item.
515 */
516
517 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
518 {
519 dbg_hid("reserved item type, tag 0x%x\n", item->tag);
520 return 0;
521 }
522
523 /*
524 * Free a report and all registered fields. The field->usage and
525 * field->value table's are allocated behind the field, so we need
526 * only to free(field) itself.
527 */
528
529 static void hid_free_report(struct hid_report *report)
530 {
531 unsigned n;
532
533 for (n = 0; n < report->maxfield; n++)
534 kfree(report->field[n]);
535 kfree(report);
536 }
537
538 /*
539 * Free a device structure, all reports, and all fields.
540 */
541
542 static void hid_device_release(struct device *dev)
543 {
544 struct hid_device *device = container_of(dev, struct hid_device, dev);
545 unsigned i, j;
546
547 for (i = 0; i < HID_REPORT_TYPES; i++) {
548 struct hid_report_enum *report_enum = device->report_enum + i;
549
550 for (j = 0; j < 256; j++) {
551 struct hid_report *report = report_enum->report_id_hash[j];
552 if (report)
553 hid_free_report(report);
554 }
555 }
556
557 kfree(device->rdesc);
558 kfree(device->collection);
559 kfree(device);
560 }
561
562 /*
563 * Fetch a report description item from the data stream. We support long
564 * items, though they are not used yet.
565 */
566
567 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
568 {
569 u8 b;
570
571 if ((end - start) <= 0)
572 return NULL;
573
574 b = *start++;
575
576 item->type = (b >> 2) & 3;
577 item->tag = (b >> 4) & 15;
578
579 if (item->tag == HID_ITEM_TAG_LONG) {
580
581 item->format = HID_ITEM_FORMAT_LONG;
582
583 if ((end - start) < 2)
584 return NULL;
585
586 item->size = *start++;
587 item->tag = *start++;
588
589 if ((end - start) < item->size)
590 return NULL;
591
592 item->data.longdata = start;
593 start += item->size;
594 return start;
595 }
596
597 item->format = HID_ITEM_FORMAT_SHORT;
598 item->size = b & 3;
599
600 switch (item->size) {
601 case 0:
602 return start;
603
604 case 1:
605 if ((end - start) < 1)
606 return NULL;
607 item->data.u8 = *start++;
608 return start;
609
610 case 2:
611 if ((end - start) < 2)
612 return NULL;
613 item->data.u16 = get_unaligned_le16(start);
614 start = (__u8 *)((__le16 *)start + 1);
615 return start;
616
617 case 3:
618 item->size++;
619 if ((end - start) < 4)
620 return NULL;
621 item->data.u32 = get_unaligned_le32(start);
622 start = (__u8 *)((__le32 *)start + 1);
623 return start;
624 }
625
626 return NULL;
627 }
628
629 /**
630 * hid_parse_report - parse device report
631 *
632 * @device: hid device
633 * @start: report start
634 * @size: report size
635 *
636 * Parse a report description into a hid_device structure. Reports are
637 * enumerated, fields are attached to these reports.
638 * 0 returned on success, otherwise nonzero error value.
639 */
640 int hid_parse_report(struct hid_device *device, __u8 *start,
641 unsigned size)
642 {
643 struct hid_parser *parser;
644 struct hid_item item;
645 __u8 *end;
646 int ret;
647 static int (*dispatch_type[])(struct hid_parser *parser,
648 struct hid_item *item) = {
649 hid_parser_main,
650 hid_parser_global,
651 hid_parser_local,
652 hid_parser_reserved
653 };
654
655 if (device->driver->report_fixup)
656 device->driver->report_fixup(device, start, size);
657
658 device->rdesc = kmalloc(size, GFP_KERNEL);
659 if (device->rdesc == NULL)
660 return -ENOMEM;
661 memcpy(device->rdesc, start, size);
662 device->rsize = size;
663
664 parser = vmalloc(sizeof(struct hid_parser));
665 if (!parser) {
666 ret = -ENOMEM;
667 goto err;
668 }
669
670 memset(parser, 0, sizeof(struct hid_parser));
671 parser->device = device;
672
673 end = start + size;
674 ret = -EINVAL;
675 while ((start = fetch_item(start, end, &item)) != NULL) {
676
677 if (item.format != HID_ITEM_FORMAT_SHORT) {
678 dbg_hid("unexpected long global item\n");
679 goto err;
680 }
681
682 if (dispatch_type[item.type](parser, &item)) {
683 dbg_hid("item %u %u %u %u parsing failed\n",
684 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
685 goto err;
686 }
687
688 if (start == end) {
689 if (parser->collection_stack_ptr) {
690 dbg_hid("unbalanced collection at end of report description\n");
691 goto err;
692 }
693 if (parser->local.delimiter_depth) {
694 dbg_hid("unbalanced delimiter at end of report description\n");
695 goto err;
696 }
697 vfree(parser);
698 return 0;
699 }
700 }
701
702 dbg_hid("item fetching failed at offset %d\n", (int)(end - start));
703 err:
704 vfree(parser);
705 return ret;
706 }
707 EXPORT_SYMBOL_GPL(hid_parse_report);
708
709 /*
710 * Convert a signed n-bit integer to signed 32-bit integer. Common
711 * cases are done through the compiler, the screwed things has to be
712 * done by hand.
713 */
714
715 static s32 snto32(__u32 value, unsigned n)
716 {
717 switch (n) {
718 case 8: return ((__s8)value);
719 case 16: return ((__s16)value);
720 case 32: return ((__s32)value);
721 }
722 return value & (1 << (n - 1)) ? value | (-1 << n) : value;
723 }
724
725 /*
726 * Convert a signed 32-bit integer to a signed n-bit integer.
727 */
728
729 static u32 s32ton(__s32 value, unsigned n)
730 {
731 s32 a = value >> (n - 1);
732 if (a && a != -1)
733 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
734 return value & ((1 << n) - 1);
735 }
736
737 /*
738 * Extract/implement a data field from/to a little endian report (bit array).
739 *
740 * Code sort-of follows HID spec:
741 * http://www.usb.org/developers/devclass_docs/HID1_11.pdf
742 *
743 * While the USB HID spec allows unlimited length bit fields in "report
744 * descriptors", most devices never use more than 16 bits.
745 * One model of UPS is claimed to report "LINEV" as a 32-bit field.
746 * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
747 */
748
749 static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
750 {
751 u64 x;
752
753 if (n > 32)
754 printk(KERN_WARNING "HID: extract() called with n (%d) > 32! (%s)\n",
755 n, current->comm);
756
757 report += offset >> 3; /* adjust byte index */
758 offset &= 7; /* now only need bit offset into one byte */
759 x = get_unaligned_le64(report);
760 x = (x >> offset) & ((1ULL << n) - 1); /* extract bit field */
761 return (u32) x;
762 }
763
764 /*
765 * "implement" : set bits in a little endian bit stream.
766 * Same concepts as "extract" (see comments above).
767 * The data mangled in the bit stream remains in little endian
768 * order the whole time. It make more sense to talk about
769 * endianness of register values by considering a register
770 * a "cached" copy of the little endiad bit stream.
771 */
772 static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
773 {
774 u64 x;
775 u64 m = (1ULL << n) - 1;
776
777 if (n > 32)
778 printk(KERN_WARNING "HID: implement() called with n (%d) > 32! (%s)\n",
779 n, current->comm);
780
781 if (value > m)
782 printk(KERN_WARNING "HID: implement() called with too large value %d! (%s)\n",
783 value, current->comm);
784 WARN_ON(value > m);
785 value &= m;
786
787 report += offset >> 3;
788 offset &= 7;
789
790 x = get_unaligned_le64(report);
791 x &= ~(m << offset);
792 x |= ((u64)value) << offset;
793 put_unaligned_le64(x, report);
794 }
795
796 /*
797 * Search an array for a value.
798 */
799
800 static __inline__ int search(__s32 *array, __s32 value, unsigned n)
801 {
802 while (n--) {
803 if (*array++ == value)
804 return 0;
805 }
806 return -1;
807 }
808
809 /**
810 * hid_match_report - check if driver's raw_event should be called
811 *
812 * @hid: hid device
813 * @report_type: type to match against
814 *
815 * compare hid->driver->report_table->report_type to report->type
816 */
817 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
818 {
819 const struct hid_report_id *id = hid->driver->report_table;
820
821 if (!id) /* NULL means all */
822 return 1;
823
824 for (; id->report_type != HID_TERMINATOR; id++)
825 if (id->report_type == HID_ANY_ID ||
826 id->report_type == report->type)
827 return 1;
828 return 0;
829 }
830
831 /**
832 * hid_match_usage - check if driver's event should be called
833 *
834 * @hid: hid device
835 * @usage: usage to match against
836 *
837 * compare hid->driver->usage_table->usage_{type,code} to
838 * usage->usage_{type,code}
839 */
840 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
841 {
842 const struct hid_usage_id *id = hid->driver->usage_table;
843
844 if (!id) /* NULL means all */
845 return 1;
846
847 for (; id->usage_type != HID_ANY_ID - 1; id++)
848 if ((id->usage_hid == HID_ANY_ID ||
849 id->usage_hid == usage->hid) &&
850 (id->usage_type == HID_ANY_ID ||
851 id->usage_type == usage->type) &&
852 (id->usage_code == HID_ANY_ID ||
853 id->usage_code == usage->code))
854 return 1;
855 return 0;
856 }
857
858 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
859 struct hid_usage *usage, __s32 value, int interrupt)
860 {
861 struct hid_driver *hdrv = hid->driver;
862 int ret;
863
864 hid_dump_input(usage, value);
865
866 if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
867 ret = hdrv->event(hid, field, usage, value);
868 if (ret != 0) {
869 if (ret < 0)
870 dbg_hid("%s's event failed with %d\n",
871 hdrv->name, ret);
872 return;
873 }
874 }
875
876 if (hid->claimed & HID_CLAIMED_INPUT)
877 hidinput_hid_event(hid, field, usage, value);
878 if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
879 hid->hiddev_hid_event(hid, field, usage, value);
880 }
881
882 /*
883 * Analyse a received field, and fetch the data from it. The field
884 * content is stored for next report processing (we do differential
885 * reporting to the layer).
886 */
887
888 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
889 __u8 *data, int interrupt)
890 {
891 unsigned n;
892 unsigned count = field->report_count;
893 unsigned offset = field->report_offset;
894 unsigned size = field->report_size;
895 __s32 min = field->logical_minimum;
896 __s32 max = field->logical_maximum;
897 __s32 *value;
898
899 if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC)))
900 return;
901
902 for (n = 0; n < count; n++) {
903
904 value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
905 extract(data, offset + n * size, size);
906
907 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
908 && value[n] >= min && value[n] <= max
909 && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
910 goto exit;
911 }
912
913 for (n = 0; n < count; n++) {
914
915 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
916 hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
917 continue;
918 }
919
920 if (field->value[n] >= min && field->value[n] <= max
921 && field->usage[field->value[n] - min].hid
922 && search(value, field->value[n], count))
923 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
924
925 if (value[n] >= min && value[n] <= max
926 && field->usage[value[n] - min].hid
927 && search(field->value, value[n], count))
928 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
929 }
930
931 memcpy(field->value, value, count * sizeof(__s32));
932 exit:
933 kfree(value);
934 }
935
936 /*
937 * Output the field into the report.
938 */
939
940 static void hid_output_field(struct hid_field *field, __u8 *data)
941 {
942 unsigned count = field->report_count;
943 unsigned offset = field->report_offset;
944 unsigned size = field->report_size;
945 unsigned bitsused = offset + count * size;
946 unsigned n;
947
948 /* make sure the unused bits in the last byte are zeros */
949 if (count > 0 && size > 0 && (bitsused % 8) != 0)
950 data[(bitsused-1)/8] &= (1 << (bitsused % 8)) - 1;
951
952 for (n = 0; n < count; n++) {
953 if (field->logical_minimum < 0) /* signed values */
954 implement(data, offset + n * size, size, s32ton(field->value[n], size));
955 else /* unsigned values */
956 implement(data, offset + n * size, size, field->value[n]);
957 }
958 }
959
960 /*
961 * Create a report.
962 */
963
964 void hid_output_report(struct hid_report *report, __u8 *data)
965 {
966 unsigned n;
967
968 if (report->id > 0)
969 *data++ = report->id;
970
971 for (n = 0; n < report->maxfield; n++)
972 hid_output_field(report->field[n], data);
973 }
974 EXPORT_SYMBOL_GPL(hid_output_report);
975
976 /*
977 * Set a field value. The report this field belongs to has to be
978 * created and transferred to the device, to set this value in the
979 * device.
980 */
981
982 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
983 {
984 unsigned size = field->report_size;
985
986 hid_dump_input(field->usage + offset, value);
987
988 if (offset >= field->report_count) {
989 dbg_hid("offset (%d) exceeds report_count (%d)\n", offset, field->report_count);
990 hid_dump_field(field, 8);
991 return -1;
992 }
993 if (field->logical_minimum < 0) {
994 if (value != snto32(s32ton(value, size), size)) {
995 dbg_hid("value %d is out of range\n", value);
996 return -1;
997 }
998 }
999 field->value[offset] = value;
1000 return 0;
1001 }
1002 EXPORT_SYMBOL_GPL(hid_set_field);
1003
1004 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1005 const u8 *data)
1006 {
1007 struct hid_report *report;
1008 unsigned int n = 0; /* Normally report number is 0 */
1009
1010 /* Device uses numbered reports, data[0] is report number */
1011 if (report_enum->numbered)
1012 n = *data;
1013
1014 report = report_enum->report_id_hash[n];
1015 if (report == NULL)
1016 dbg_hid("undefined report_id %u received\n", n);
1017
1018 return report;
1019 }
1020
1021 void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1022 int interrupt)
1023 {
1024 struct hid_report_enum *report_enum = hid->report_enum + type;
1025 struct hid_report *report;
1026 unsigned int a;
1027 int rsize, csize = size;
1028 u8 *cdata = data;
1029
1030 report = hid_get_report(report_enum, data);
1031 if (!report)
1032 return;
1033
1034 if (report_enum->numbered) {
1035 cdata++;
1036 csize--;
1037 }
1038
1039 rsize = ((report->size - 1) >> 3) + 1;
1040
1041 if (csize < rsize) {
1042 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1043 csize, rsize);
1044 memset(cdata + csize, 0, rsize - csize);
1045 }
1046
1047 if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1048 hid->hiddev_report_event(hid, report);
1049 if (hid->claimed & HID_CLAIMED_HIDRAW) {
1050 /* numbered reports need to be passed with the report num */
1051 if (report_enum->numbered)
1052 hidraw_report_event(hid, data - 1, size + 1);
1053 else
1054 hidraw_report_event(hid, data, size);
1055 }
1056
1057 for (a = 0; a < report->maxfield; a++)
1058 hid_input_field(hid, report->field[a], cdata, interrupt);
1059
1060 if (hid->claimed & HID_CLAIMED_INPUT)
1061 hidinput_report_event(hid, report);
1062 }
1063 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1064
1065 /**
1066 * hid_input_report - report data from lower layer (usb, bt...)
1067 *
1068 * @hid: hid device
1069 * @type: HID report type (HID_*_REPORT)
1070 * @data: report contents
1071 * @size: size of data parameter
1072 * @interrupt: called from atomic?
1073 *
1074 * This is data entry for lower layers.
1075 */
1076 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1077 {
1078 struct hid_report_enum *report_enum;
1079 struct hid_driver *hdrv;
1080 struct hid_report *report;
1081 unsigned int i;
1082 int ret;
1083
1084 if (!hid || !hid->driver)
1085 return -ENODEV;
1086 report_enum = hid->report_enum + type;
1087 hdrv = hid->driver;
1088
1089 if (!size) {
1090 dbg_hid("empty report\n");
1091 return -1;
1092 }
1093
1094 dbg_hid("report (size %u) (%snumbered)\n", size, report_enum->numbered ? "" : "un");
1095
1096 report = hid_get_report(report_enum, data);
1097 if (!report)
1098 return -1;
1099
1100 /* dump the report */
1101 dbg_hid("report %d (size %u) = ", report->id, size);
1102 for (i = 0; i < size; i++)
1103 dbg_hid_line(" %02x", data[i]);
1104 dbg_hid_line("\n");
1105
1106 if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1107 ret = hdrv->raw_event(hid, report, data, size);
1108 if (ret != 0)
1109 return ret < 0 ? ret : 0;
1110 }
1111
1112 hid_report_raw_event(hid, type, data, size, interrupt);
1113
1114 return 0;
1115 }
1116 EXPORT_SYMBOL_GPL(hid_input_report);
1117
1118 static bool hid_match_one_id(struct hid_device *hdev,
1119 const struct hid_device_id *id)
1120 {
1121 return id->bus == hdev->bus &&
1122 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1123 (id->product == HID_ANY_ID || id->product == hdev->product);
1124 }
1125
1126 static const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1127 const struct hid_device_id *id)
1128 {
1129 for (; id->bus; id++)
1130 if (hid_match_one_id(hdev, id))
1131 return id;
1132
1133 return NULL;
1134 }
1135
1136 static const struct hid_device_id hid_hiddev_list[] = {
1137 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1138 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1139 { }
1140 };
1141
1142 static bool hid_hiddev(struct hid_device *hdev)
1143 {
1144 return !!hid_match_id(hdev, hid_hiddev_list);
1145 }
1146
1147 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1148 {
1149 static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1150 "Joystick", "Gamepad", "Keyboard", "Keypad",
1151 "Multi-Axis Controller"
1152 };
1153 const char *type, *bus;
1154 char buf[64];
1155 unsigned int i;
1156 int len;
1157
1158 if (hdev->bus != BUS_USB)
1159 connect_mask &= ~HID_CONNECT_HIDDEV;
1160 if (hid_hiddev(hdev))
1161 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1162
1163 if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1164 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1165 hdev->claimed |= HID_CLAIMED_INPUT;
1166 if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1167 !hdev->hiddev_connect(hdev,
1168 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1169 hdev->claimed |= HID_CLAIMED_HIDDEV;
1170 if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1171 hdev->claimed |= HID_CLAIMED_HIDRAW;
1172
1173 if (!hdev->claimed) {
1174 dev_err(&hdev->dev, "claimed by neither input, hiddev nor "
1175 "hidraw\n");
1176 return -ENODEV;
1177 }
1178
1179 if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1180 (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1181 hdev->ff_init(hdev);
1182
1183 len = 0;
1184 if (hdev->claimed & HID_CLAIMED_INPUT)
1185 len += sprintf(buf + len, "input");
1186 if (hdev->claimed & HID_CLAIMED_HIDDEV)
1187 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1188 hdev->minor);
1189 if (hdev->claimed & HID_CLAIMED_HIDRAW)
1190 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1191 ((struct hidraw *)hdev->hidraw)->minor);
1192
1193 type = "Device";
1194 for (i = 0; i < hdev->maxcollection; i++) {
1195 struct hid_collection *col = &hdev->collection[i];
1196 if (col->type == HID_COLLECTION_APPLICATION &&
1197 (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1198 (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1199 type = types[col->usage & 0xffff];
1200 break;
1201 }
1202 }
1203
1204 switch (hdev->bus) {
1205 case BUS_USB:
1206 bus = "USB";
1207 break;
1208 case BUS_BLUETOOTH:
1209 bus = "BLUETOOTH";
1210 break;
1211 default:
1212 bus = "<UNKNOWN>";
1213 }
1214
1215 dev_info(&hdev->dev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1216 buf, bus, hdev->version >> 8, hdev->version & 0xff,
1217 type, hdev->name, hdev->phys);
1218
1219 return 0;
1220 }
1221 EXPORT_SYMBOL_GPL(hid_connect);
1222
1223 /* a list of devices for which there is a specialized driver on HID bus */
1224 static const struct hid_device_id hid_blacklist[] = {
1225 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1226 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1227 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) },
1228 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1229 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1230 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1231 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1232 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1233 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1234 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1235 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1236 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1237 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1238 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1239 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1240 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1241 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1242 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1243 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1244 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1245 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1246 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1247 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1248 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1249 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1250 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1251 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1252 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1253 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1254 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1255 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1256 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1257 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1258 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1259 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1260 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1261 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1262 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1263 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1264 { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1265 { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1266 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1267 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1268 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1269 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1270 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1271 { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1272 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1273 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1274 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1275 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1276 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1277 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1278 { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1279 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1280 { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1281 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1282 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1283 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1284 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1285 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1286 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1287 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1288 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1289 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1290 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1291 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1292 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1293 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1294 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1295 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1296 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1297 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1298 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1299 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1300 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1301 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1302 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1303 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1304 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1305 { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1306 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1307 { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1308 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1309 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1310 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1311 { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1312 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1313 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1314 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1315 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1316 { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1317 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1318 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1319 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1320 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1321
1322 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1323 { }
1324 };
1325
1326 struct hid_dynid {
1327 struct list_head list;
1328 struct hid_device_id id;
1329 };
1330
1331 /**
1332 * store_new_id - add a new HID device ID to this driver and re-probe devices
1333 * @driver: target device driver
1334 * @buf: buffer for scanning device ID data
1335 * @count: input size
1336 *
1337 * Adds a new dynamic hid device ID to this driver,
1338 * and causes the driver to probe for all devices again.
1339 */
1340 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1341 size_t count)
1342 {
1343 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1344 struct hid_dynid *dynid;
1345 __u32 bus, vendor, product;
1346 unsigned long driver_data = 0;
1347 int ret;
1348
1349 ret = sscanf(buf, "%x %x %x %lx",
1350 &bus, &vendor, &product, &driver_data);
1351 if (ret < 3)
1352 return -EINVAL;
1353
1354 dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1355 if (!dynid)
1356 return -ENOMEM;
1357
1358 dynid->id.bus = bus;
1359 dynid->id.vendor = vendor;
1360 dynid->id.product = product;
1361 dynid->id.driver_data = driver_data;
1362
1363 spin_lock(&hdrv->dyn_lock);
1364 list_add_tail(&dynid->list, &hdrv->dyn_list);
1365 spin_unlock(&hdrv->dyn_lock);
1366
1367 ret = 0;
1368 if (get_driver(&hdrv->driver)) {
1369 ret = driver_attach(&hdrv->driver);
1370 put_driver(&hdrv->driver);
1371 }
1372
1373 return ret ? : count;
1374 }
1375 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1376
1377 static void hid_free_dynids(struct hid_driver *hdrv)
1378 {
1379 struct hid_dynid *dynid, *n;
1380
1381 spin_lock(&hdrv->dyn_lock);
1382 list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1383 list_del(&dynid->list);
1384 kfree(dynid);
1385 }
1386 spin_unlock(&hdrv->dyn_lock);
1387 }
1388
1389 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1390 struct hid_driver *hdrv)
1391 {
1392 struct hid_dynid *dynid;
1393
1394 spin_lock(&hdrv->dyn_lock);
1395 list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1396 if (hid_match_one_id(hdev, &dynid->id)) {
1397 spin_unlock(&hdrv->dyn_lock);
1398 return &dynid->id;
1399 }
1400 }
1401 spin_unlock(&hdrv->dyn_lock);
1402
1403 return hid_match_id(hdev, hdrv->id_table);
1404 }
1405
1406 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1407 {
1408 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1409 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1410
1411 if (!hid_match_device(hdev, hdrv))
1412 return 0;
1413
1414 /* generic wants all non-blacklisted */
1415 if (!strncmp(hdrv->name, "generic-", 8))
1416 return !hid_match_id(hdev, hid_blacklist);
1417
1418 return 1;
1419 }
1420
1421 static int hid_device_probe(struct device *dev)
1422 {
1423 struct hid_driver *hdrv = container_of(dev->driver,
1424 struct hid_driver, driver);
1425 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1426 const struct hid_device_id *id;
1427 int ret = 0;
1428
1429 if (!hdev->driver) {
1430 id = hid_match_device(hdev, hdrv);
1431 if (id == NULL)
1432 return -ENODEV;
1433
1434 hdev->driver = hdrv;
1435 if (hdrv->probe) {
1436 ret = hdrv->probe(hdev, id);
1437 } else { /* default probe */
1438 ret = hid_parse(hdev);
1439 if (!ret)
1440 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1441 }
1442 if (ret)
1443 hdev->driver = NULL;
1444 }
1445 return ret;
1446 }
1447
1448 static int hid_device_remove(struct device *dev)
1449 {
1450 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1451 struct hid_driver *hdrv = hdev->driver;
1452
1453 if (hdrv) {
1454 if (hdrv->remove)
1455 hdrv->remove(hdev);
1456 else /* default remove */
1457 hid_hw_stop(hdev);
1458 hdev->driver = NULL;
1459 }
1460
1461 return 0;
1462 }
1463
1464 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1465 {
1466 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1467
1468 if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
1469 hdev->bus, hdev->vendor, hdev->product))
1470 return -ENOMEM;
1471
1472 if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
1473 return -ENOMEM;
1474
1475 if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
1476 return -ENOMEM;
1477
1478 if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
1479 return -ENOMEM;
1480
1481 if (add_uevent_var(env, "MODALIAS=hid:b%04Xv%08Xp%08X",
1482 hdev->bus, hdev->vendor, hdev->product))
1483 return -ENOMEM;
1484
1485 return 0;
1486 }
1487
1488 static struct bus_type hid_bus_type = {
1489 .name = "hid",
1490 .match = hid_bus_match,
1491 .probe = hid_device_probe,
1492 .remove = hid_device_remove,
1493 .uevent = hid_uevent,
1494 };
1495
1496 /* a list of devices that shouldn't be handled by HID core at all */
1497 static const struct hid_device_id hid_ignore_list[] = {
1498 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
1499 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
1500 { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
1501 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
1502 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
1503 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
1504 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
1505 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
1506 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
1507 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
1508 { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
1509 { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
1510 { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM)},
1511 { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM2)},
1512 { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
1513 { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
1514 { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
1515 { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
1516 { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
1517 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
1518 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
1519 { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
1520 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
1521 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
1522 { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
1523 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
1524 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
1525 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0003) },
1526 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
1527 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
1528 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
1529 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
1530 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
1531 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
1532 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
1533 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
1534 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
1535 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
1536 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
1537 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
1538 { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
1539 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
1540 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
1541 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
1542 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
1543 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
1544 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
1545 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
1546 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
1547 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
1548 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
1549 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
1550 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
1551 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
1552 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
1553 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
1554 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
1555 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
1556 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
1557 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
1558 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
1559 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
1560 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
1561 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
1562 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
1563 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
1564 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
1565 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
1566 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
1567 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
1568 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
1569 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
1570 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
1571 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
1572 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
1573 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
1574 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
1575 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
1576 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
1577 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
1578 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
1579 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
1580 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
1581 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
1582 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
1583 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
1584 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
1585 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
1586 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
1587 { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
1588 { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
1589 { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
1590 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
1591 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
1592 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
1593 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
1594 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
1595 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
1596 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
1597 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY1) },
1598 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
1599 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
1600 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
1601 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
1602 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
1603 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
1604 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
1605 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
1606 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
1607 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
1608 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
1609 { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
1610 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
1611 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
1612 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
1613 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
1614 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
1615 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
1616 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
1617 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
1618 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
1619 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
1620 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
1621 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
1622 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
1623 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
1624 { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
1625 { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD) },
1626 { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD2) },
1627 { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD3) },
1628 { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD4) },
1629 { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD5) },
1630 { HID_USB_DEVICE(USB_VENDOR_ID_TENX, USB_DEVICE_ID_TENX_IBUDDY1) },
1631 { HID_USB_DEVICE(USB_VENDOR_ID_TENX, USB_DEVICE_ID_TENX_IBUDDY2) },
1632 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
1633 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
1634 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
1635 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
1636 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
1637 { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
1638 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
1639 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
1640 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
1641 { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
1642 { }
1643 };
1644
1645 /**
1646 * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
1647 *
1648 * There are composite devices for which we want to ignore only a certain
1649 * interface. This is a list of devices for which only the mouse interface will
1650 * be ignored. This allows a dedicated driver to take care of the interface.
1651 */
1652 static const struct hid_device_id hid_mouse_ignore_list[] = {
1653 /* appletouch driver */
1654 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1655 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1656 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1657 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1658 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1659 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1660 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1661 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1662 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1663 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1664 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1665 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1666 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1667 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1668 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1669 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1670 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1671 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1672 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1673 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1674 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1675 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1676 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1677 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1678 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1679 { }
1680 };
1681
1682 static bool hid_ignore(struct hid_device *hdev)
1683 {
1684 switch (hdev->vendor) {
1685 case USB_VENDOR_ID_CODEMERCS:
1686 /* ignore all Code Mercenaries IOWarrior devices */
1687 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
1688 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
1689 return true;
1690 break;
1691 case USB_VENDOR_ID_LOGITECH:
1692 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
1693 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
1694 return true;
1695 break;
1696 }
1697
1698 if (hdev->type == HID_TYPE_USBMOUSE &&
1699 hid_match_id(hdev, hid_mouse_ignore_list))
1700 return true;
1701
1702 return !!hid_match_id(hdev, hid_ignore_list);
1703 }
1704
1705 int hid_add_device(struct hid_device *hdev)
1706 {
1707 static atomic_t id = ATOMIC_INIT(0);
1708 int ret;
1709
1710 if (WARN_ON(hdev->status & HID_STAT_ADDED))
1711 return -EBUSY;
1712
1713 /* we need to kill them here, otherwise they will stay allocated to
1714 * wait for coming driver */
1715 if (hid_ignore(hdev))
1716 return -ENODEV;
1717
1718 /* XXX hack, any other cleaner solution after the driver core
1719 * is converted to allow more than 20 bytes as the device name? */
1720 dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
1721 hdev->vendor, hdev->product, atomic_inc_return(&id));
1722
1723 ret = device_add(&hdev->dev);
1724 if (!ret)
1725 hdev->status |= HID_STAT_ADDED;
1726
1727 return ret;
1728 }
1729 EXPORT_SYMBOL_GPL(hid_add_device);
1730
1731 /**
1732 * hid_allocate_device - allocate new hid device descriptor
1733 *
1734 * Allocate and initialize hid device, so that hid_destroy_device might be
1735 * used to free it.
1736 *
1737 * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
1738 * error value.
1739 */
1740 struct hid_device *hid_allocate_device(void)
1741 {
1742 struct hid_device *hdev;
1743 unsigned int i;
1744 int ret = -ENOMEM;
1745
1746 hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
1747 if (hdev == NULL)
1748 return ERR_PTR(ret);
1749
1750 device_initialize(&hdev->dev);
1751 hdev->dev.release = hid_device_release;
1752 hdev->dev.bus = &hid_bus_type;
1753
1754 hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
1755 sizeof(struct hid_collection), GFP_KERNEL);
1756 if (hdev->collection == NULL)
1757 goto err;
1758 hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
1759
1760 for (i = 0; i < HID_REPORT_TYPES; i++)
1761 INIT_LIST_HEAD(&hdev->report_enum[i].report_list);
1762
1763 return hdev;
1764 err:
1765 put_device(&hdev->dev);
1766 return ERR_PTR(ret);
1767 }
1768 EXPORT_SYMBOL_GPL(hid_allocate_device);
1769
1770 static void hid_remove_device(struct hid_device *hdev)
1771 {
1772 if (hdev->status & HID_STAT_ADDED) {
1773 device_del(&hdev->dev);
1774 hdev->status &= ~HID_STAT_ADDED;
1775 }
1776 }
1777
1778 /**
1779 * hid_destroy_device - free previously allocated device
1780 *
1781 * @hdev: hid device
1782 *
1783 * If you allocate hid_device through hid_allocate_device, you should ever
1784 * free by this function.
1785 */
1786 void hid_destroy_device(struct hid_device *hdev)
1787 {
1788 hid_remove_device(hdev);
1789 put_device(&hdev->dev);
1790 }
1791 EXPORT_SYMBOL_GPL(hid_destroy_device);
1792
1793 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
1794 const char *mod_name)
1795 {
1796 int ret;
1797
1798 hdrv->driver.name = hdrv->name;
1799 hdrv->driver.bus = &hid_bus_type;
1800 hdrv->driver.owner = owner;
1801 hdrv->driver.mod_name = mod_name;
1802
1803 INIT_LIST_HEAD(&hdrv->dyn_list);
1804 spin_lock_init(&hdrv->dyn_lock);
1805
1806 ret = driver_register(&hdrv->driver);
1807 if (ret)
1808 return ret;
1809
1810 ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
1811 if (ret)
1812 driver_unregister(&hdrv->driver);
1813
1814 return ret;
1815 }
1816 EXPORT_SYMBOL_GPL(__hid_register_driver);
1817
1818 void hid_unregister_driver(struct hid_driver *hdrv)
1819 {
1820 driver_remove_file(&hdrv->driver, &driver_attr_new_id);
1821 driver_unregister(&hdrv->driver);
1822 hid_free_dynids(hdrv);
1823 }
1824 EXPORT_SYMBOL_GPL(hid_unregister_driver);
1825
1826 int hid_check_keys_pressed(struct hid_device *hid)
1827 {
1828 struct hid_input *hidinput;
1829 int i;
1830
1831 if (!(hid->claimed & HID_CLAIMED_INPUT))
1832 return 0;
1833
1834 list_for_each_entry(hidinput, &hid->inputs, list) {
1835 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
1836 if (hidinput->input->key[i])
1837 return 1;
1838 }
1839
1840 return 0;
1841 }
1842
1843 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
1844
1845 static int __init hid_init(void)
1846 {
1847 int ret;
1848
1849 ret = bus_register(&hid_bus_type);
1850 if (ret) {
1851 printk(KERN_ERR "HID: can't register hid bus\n");
1852 goto err;
1853 }
1854
1855 ret = hidraw_init();
1856 if (ret)
1857 goto err_bus;
1858
1859 return 0;
1860 err_bus:
1861 bus_unregister(&hid_bus_type);
1862 err:
1863 return ret;
1864 }
1865
1866 static void __exit hid_exit(void)
1867 {
1868 hidraw_exit();
1869 bus_unregister(&hid_bus_type);
1870 }
1871
1872 module_init(hid_init);
1873 module_exit(hid_exit);
1874
1875 MODULE_LICENSE(DRIVER_LICENSE);
1876
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