?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
lockd: Try to reconnect if statd has moved
[linux/fpc-iii.git] / drivers / hid / hid-core.c
blobe7e28b50e7712592890bf08a06d5e498e6687467
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 int hid_debug = 0;
48 module_param_named(debug, hid_debug, int, 0600);
49 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
50 EXPORT_SYMBOL_GPL(hid_debug);
51
52 /*
53 * Register a new report for a device.
54 */
55
56 static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
57 {
58 struct hid_report_enum *report_enum = device->report_enum + type;
59 struct hid_report *report;
60
61 if (id >= HID_MAX_IDS)
62 return NULL;
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 > 96) {
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 parser->global.report_id >= HID_MAX_IDS) {
375 dbg_hid("report_id %u is invalid\n",
376 parser->global.report_id);
377 return -1;
378 }
379 return 0;
380
381 default:
382 dbg_hid("unknown global tag 0x%x\n", item->tag);
383 return -1;
384 }
385 }
386
387 /*
388 * Process a local item.
389 */
390
391 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
392 {
393 __u32 data;
394 unsigned n;
395
396 if (item->size == 0) {
397 dbg_hid("item data expected for local item\n");
398 return -1;
399 }
400
401 data = item_udata(item);
402
403 switch (item->tag) {
404 case HID_LOCAL_ITEM_TAG_DELIMITER:
405
406 if (data) {
407 /*
408 * We treat items before the first delimiter
409 * as global to all usage sets (branch 0).
410 * In the moment we process only these global
411 * items and the first delimiter set.
412 */
413 if (parser->local.delimiter_depth != 0) {
414 dbg_hid("nested delimiters\n");
415 return -1;
416 }
417 parser->local.delimiter_depth++;
418 parser->local.delimiter_branch++;
419 } else {
420 if (parser->local.delimiter_depth < 1) {
421 dbg_hid("bogus close delimiter\n");
422 return -1;
423 }
424 parser->local.delimiter_depth--;
425 }
426 return 1;
427
428 case HID_LOCAL_ITEM_TAG_USAGE:
429
430 if (parser->local.delimiter_branch > 1) {
431 dbg_hid("alternative usage ignored\n");
432 return 0;
433 }
434
435 if (item->size <= 2)
436 data = (parser->global.usage_page << 16) + data;
437
438 return hid_add_usage(parser, data);
439
440 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
441
442 if (parser->local.delimiter_branch > 1) {
443 dbg_hid("alternative usage ignored\n");
444 return 0;
445 }
446
447 if (item->size <= 2)
448 data = (parser->global.usage_page << 16) + data;
449
450 parser->local.usage_minimum = data;
451 return 0;
452
453 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
454
455 if (parser->local.delimiter_branch > 1) {
456 dbg_hid("alternative usage ignored\n");
457 return 0;
458 }
459
460 if (item->size <= 2)
461 data = (parser->global.usage_page << 16) + data;
462
463 for (n = parser->local.usage_minimum; n <= data; n++)
464 if (hid_add_usage(parser, n)) {
465 dbg_hid("hid_add_usage failed\n");
466 return -1;
467 }
468 return 0;
469
470 default:
471
472 dbg_hid("unknown local item tag 0x%x\n", item->tag);
473 return 0;
474 }
475 return 0;
476 }
477
478 /*
479 * Process a main item.
480 */
481
482 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
483 {
484 __u32 data;
485 int ret;
486
487 data = item_udata(item);
488
489 switch (item->tag) {
490 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
491 ret = open_collection(parser, data & 0xff);
492 break;
493 case HID_MAIN_ITEM_TAG_END_COLLECTION:
494 ret = close_collection(parser);
495 break;
496 case HID_MAIN_ITEM_TAG_INPUT:
497 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
498 break;
499 case HID_MAIN_ITEM_TAG_OUTPUT:
500 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
501 break;
502 case HID_MAIN_ITEM_TAG_FEATURE:
503 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
504 break;
505 default:
506 dbg_hid("unknown main item tag 0x%x\n", item->tag);
507 ret = 0;
508 }
509
510 memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */
511
512 return ret;
513 }
514
515 /*
516 * Process a reserved item.
517 */
518
519 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
520 {
521 dbg_hid("reserved item type, tag 0x%x\n", item->tag);
522 return 0;
523 }
524
525 /*
526 * Free a report and all registered fields. The field->usage and
527 * field->value table's are allocated behind the field, so we need
528 * only to free(field) itself.
529 */
530
531 static void hid_free_report(struct hid_report *report)
532 {
533 unsigned n;
534
535 for (n = 0; n < report->maxfield; n++)
536 kfree(report->field[n]);
537 kfree(report);
538 }
539
540 /*
541 * Free a device structure, all reports, and all fields.
542 */
543
544 static void hid_device_release(struct device *dev)
545 {
546 struct hid_device *device = container_of(dev, struct hid_device, dev);
547 unsigned i, j;
548
549 for (i = 0; i < HID_REPORT_TYPES; i++) {
550 struct hid_report_enum *report_enum = device->report_enum + i;
551
552 for (j = 0; j < HID_MAX_IDS; j++) {
553 struct hid_report *report = report_enum->report_id_hash[j];
554 if (report)
555 hid_free_report(report);
556 }
557 }
558
559 kfree(device->rdesc);
560 kfree(device->collection);
561 kfree(device);
562 }
563
564 /*
565 * Fetch a report description item from the data stream. We support long
566 * items, though they are not used yet.
567 */
568
569 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
570 {
571 u8 b;
572
573 if ((end - start) <= 0)
574 return NULL;
575
576 b = *start++;
577
578 item->type = (b >> 2) & 3;
579 item->tag = (b >> 4) & 15;
580
581 if (item->tag == HID_ITEM_TAG_LONG) {
582
583 item->format = HID_ITEM_FORMAT_LONG;
584
585 if ((end - start) < 2)
586 return NULL;
587
588 item->size = *start++;
589 item->tag = *start++;
590
591 if ((end - start) < item->size)
592 return NULL;
593
594 item->data.longdata = start;
595 start += item->size;
596 return start;
597 }
598
599 item->format = HID_ITEM_FORMAT_SHORT;
600 item->size = b & 3;
601
602 switch (item->size) {
603 case 0:
604 return start;
605
606 case 1:
607 if ((end - start) < 1)
608 return NULL;
609 item->data.u8 = *start++;
610 return start;
611
612 case 2:
613 if ((end - start) < 2)
614 return NULL;
615 item->data.u16 = get_unaligned_le16(start);
616 start = (__u8 *)((__le16 *)start + 1);
617 return start;
618
619 case 3:
620 item->size++;
621 if ((end - start) < 4)
622 return NULL;
623 item->data.u32 = get_unaligned_le32(start);
624 start = (__u8 *)((__le32 *)start + 1);
625 return start;
626 }
627
628 return NULL;
629 }
630
631 /**
632 * hid_parse_report - parse device report
633 *
634 * @device: hid device
635 * @start: report start
636 * @size: report size
637 *
638 * Parse a report description into a hid_device structure. Reports are
639 * enumerated, fields are attached to these reports.
640 * 0 returned on success, otherwise nonzero error value.
641 */
642 int hid_parse_report(struct hid_device *device, __u8 *start,
643 unsigned size)
644 {
645 struct hid_parser *parser;
646 struct hid_item item;
647 __u8 *end;
648 int ret;
649 static int (*dispatch_type[])(struct hid_parser *parser,
650 struct hid_item *item) = {
651 hid_parser_main,
652 hid_parser_global,
653 hid_parser_local,
654 hid_parser_reserved
655 };
656
657 if (device->driver->report_fixup)
658 device->driver->report_fixup(device, start, size);
659
660 device->rdesc = kmalloc(size, GFP_KERNEL);
661 if (device->rdesc == NULL)
662 return -ENOMEM;
663 memcpy(device->rdesc, start, size);
664 device->rsize = size;
665
666 parser = vmalloc(sizeof(struct hid_parser));
667 if (!parser) {
668 ret = -ENOMEM;
669 goto err;
670 }
671
672 memset(parser, 0, sizeof(struct hid_parser));
673 parser->device = device;
674
675 end = start + size;
676 ret = -EINVAL;
677 while ((start = fetch_item(start, end, &item)) != NULL) {
678
679 if (item.format != HID_ITEM_FORMAT_SHORT) {
680 dbg_hid("unexpected long global item\n");
681 goto err;
682 }
683
684 if (dispatch_type[item.type](parser, &item)) {
685 dbg_hid("item %u %u %u %u parsing failed\n",
686 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
687 goto err;
688 }
689
690 if (start == end) {
691 if (parser->collection_stack_ptr) {
692 dbg_hid("unbalanced collection at end of report description\n");
693 goto err;
694 }
695 if (parser->local.delimiter_depth) {
696 dbg_hid("unbalanced delimiter at end of report description\n");
697 goto err;
698 }
699 vfree(parser);
700 return 0;
701 }
702 }
703
704 dbg_hid("item fetching failed at offset %d\n", (int)(end - start));
705 err:
706 vfree(parser);
707 return ret;
708 }
709 EXPORT_SYMBOL_GPL(hid_parse_report);
710
711 /*
712 * Convert a signed n-bit integer to signed 32-bit integer. Common
713 * cases are done through the compiler, the screwed things has to be
714 * done by hand.
715 */
716
717 static s32 snto32(__u32 value, unsigned n)
718 {
719 switch (n) {
720 case 8: return ((__s8)value);
721 case 16: return ((__s16)value);
722 case 32: return ((__s32)value);
723 }
724 return value & (1 << (n - 1)) ? value | (-1 << n) : value;
725 }
726
727 /*
728 * Convert a signed 32-bit integer to a signed n-bit integer.
729 */
730
731 static u32 s32ton(__s32 value, unsigned n)
732 {
733 s32 a = value >> (n - 1);
734 if (a && a != -1)
735 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
736 return value & ((1 << n) - 1);
737 }
738
739 /*
740 * Extract/implement a data field from/to a little endian report (bit array).
741 *
742 * Code sort-of follows HID spec:
743 * http://www.usb.org/developers/devclass_docs/HID1_11.pdf
744 *
745 * While the USB HID spec allows unlimited length bit fields in "report
746 * descriptors", most devices never use more than 16 bits.
747 * One model of UPS is claimed to report "LINEV" as a 32-bit field.
748 * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
749 */
750
751 static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
752 {
753 u64 x;
754
755 if (n > 32)
756 printk(KERN_WARNING "HID: extract() called with n (%d) > 32! (%s)\n",
757 n, current->comm);
758
759 report += offset >> 3; /* adjust byte index */
760 offset &= 7; /* now only need bit offset into one byte */
761 x = get_unaligned_le64(report);
762 x = (x >> offset) & ((1ULL << n) - 1); /* extract bit field */
763 return (u32) x;
764 }
765
766 /*
767 * "implement" : set bits in a little endian bit stream.
768 * Same concepts as "extract" (see comments above).
769 * The data mangled in the bit stream remains in little endian
770 * order the whole time. It make more sense to talk about
771 * endianness of register values by considering a register
772 * a "cached" copy of the little endiad bit stream.
773 */
774 static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
775 {
776 u64 x;
777 u64 m = (1ULL << n) - 1;
778
779 if (n > 32)
780 printk(KERN_WARNING "HID: implement() called with n (%d) > 32! (%s)\n",
781 n, current->comm);
782
783 if (value > m)
784 printk(KERN_WARNING "HID: implement() called with too large value %d! (%s)\n",
785 value, current->comm);
786 WARN_ON(value > m);
787 value &= m;
788
789 report += offset >> 3;
790 offset &= 7;
791
792 x = get_unaligned_le64(report);
793 x &= ~(m << offset);
794 x |= ((u64)value) << offset;
795 put_unaligned_le64(x, report);
796 }
797
798 /*
799 * Search an array for a value.
800 */
801
802 static __inline__ int search(__s32 *array, __s32 value, unsigned n)
803 {
804 while (n--) {
805 if (*array++ == value)
806 return 0;
807 }
808 return -1;
809 }
810
811 static const char * const hid_report_names[] = {
812 "HID_INPUT_REPORT",
813 "HID_OUTPUT_REPORT",
814 "HID_FEATURE_REPORT",
815 };
816 /**
817 * hid_validate_values - validate existing device report's value indexes
818 *
819 * @device: hid device
820 * @type: which report type to examine
821 * @id: which report ID to examine (0 for first)
822 * @field_index: which report field to examine
823 * @report_counts: expected number of values
824 *
825 * Validate the number of values in a given field of a given report, after
826 * parsing.
827 */
828 struct hid_report *hid_validate_values(struct hid_device *hid,
829 unsigned int type, unsigned int id,
830 unsigned int field_index,
831 unsigned int report_counts)
832 {
833 struct hid_report *report;
834
835 if (type > HID_FEATURE_REPORT) {
836 dev_err(&hid->dev, "invalid HID report type %u\n", type);
837 return NULL;
838 }
839
840 if (id >= HID_MAX_IDS) {
841 dev_err(&hid->dev, "invalid HID report id %u\n", id);
842 return NULL;
843 }
844
845 /*
846 * Explicitly not using hid_get_report() here since it depends on
847 * ->numbered being checked, which may not always be the case when
848 * drivers go to access report values.
849 */
850 report = hid->report_enum[type].report_id_hash[id];
851 if (!report) {
852 dev_err(&hid->dev, "missing %s %u\n", hid_report_names[type], id);
853 return NULL;
854 }
855 if (report->maxfield <= field_index) {
856 dev_err(&hid->dev, "not enough fields in %s %u\n",
857 hid_report_names[type], id);
858 return NULL;
859 }
860 if (report->field[field_index]->report_count < report_counts) {
861 dev_err(&hid->dev, "not enough values in %s %u field %u\n",
862 hid_report_names[type], id, field_index);
863 return NULL;
864 }
865 return report;
866 }
867 EXPORT_SYMBOL_GPL(hid_validate_values);
868
869 /**
870 * hid_match_report - check if driver's raw_event should be called
871 *
872 * @hid: hid device
873 * @report_type: type to match against
874 *
875 * compare hid->driver->report_table->report_type to report->type
876 */
877 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
878 {
879 const struct hid_report_id *id = hid->driver->report_table;
880
881 if (!id) /* NULL means all */
882 return 1;
883
884 for (; id->report_type != HID_TERMINATOR; id++)
885 if (id->report_type == HID_ANY_ID ||
886 id->report_type == report->type)
887 return 1;
888 return 0;
889 }
890
891 /**
892 * hid_match_usage - check if driver's event should be called
893 *
894 * @hid: hid device
895 * @usage: usage to match against
896 *
897 * compare hid->driver->usage_table->usage_{type,code} to
898 * usage->usage_{type,code}
899 */
900 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
901 {
902 const struct hid_usage_id *id = hid->driver->usage_table;
903
904 if (!id) /* NULL means all */
905 return 1;
906
907 for (; id->usage_type != HID_ANY_ID - 1; id++)
908 if ((id->usage_hid == HID_ANY_ID ||
909 id->usage_hid == usage->hid) &&
910 (id->usage_type == HID_ANY_ID ||
911 id->usage_type == usage->type) &&
912 (id->usage_code == HID_ANY_ID ||
913 id->usage_code == usage->code))
914 return 1;
915 return 0;
916 }
917
918 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
919 struct hid_usage *usage, __s32 value, int interrupt)
920 {
921 struct hid_driver *hdrv = hid->driver;
922 int ret;
923
924 hid_dump_input(hid, usage, value);
925
926 if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
927 ret = hdrv->event(hid, field, usage, value);
928 if (ret != 0) {
929 if (ret < 0)
930 dbg_hid("%s's event failed with %d\n",
931 hdrv->name, ret);
932 return;
933 }
934 }
935
936 if (hid->claimed & HID_CLAIMED_INPUT)
937 hidinput_hid_event(hid, field, usage, value);
938 if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
939 hid->hiddev_hid_event(hid, field, usage, value);
940 }
941
942 /*
943 * Analyse a received field, and fetch the data from it. The field
944 * content is stored for next report processing (we do differential
945 * reporting to the layer).
946 */
947
948 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
949 __u8 *data, int interrupt)
950 {
951 unsigned n;
952 unsigned count = field->report_count;
953 unsigned offset = field->report_offset;
954 unsigned size = field->report_size;
955 __s32 min = field->logical_minimum;
956 __s32 max = field->logical_maximum;
957 __s32 *value;
958
959 if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC)))
960 return;
961
962 for (n = 0; n < count; n++) {
963
964 value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
965 extract(data, offset + n * size, size);
966
967 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
968 && value[n] >= min && value[n] <= max
969 && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
970 goto exit;
971 }
972
973 for (n = 0; n < count; n++) {
974
975 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
976 hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
977 continue;
978 }
979
980 if (field->value[n] >= min && field->value[n] <= max
981 && field->usage[field->value[n] - min].hid
982 && search(value, field->value[n], count))
983 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
984
985 if (value[n] >= min && value[n] <= max
986 && field->usage[value[n] - min].hid
987 && search(field->value, value[n], count))
988 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
989 }
990
991 memcpy(field->value, value, count * sizeof(__s32));
992 exit:
993 kfree(value);
994 }
995
996 /*
997 * Output the field into the report.
998 */
999
1000 static void hid_output_field(struct hid_field *field, __u8 *data)
1001 {
1002 unsigned count = field->report_count;
1003 unsigned offset = field->report_offset;
1004 unsigned size = field->report_size;
1005 unsigned bitsused = offset + count * size;
1006 unsigned n;
1007
1008 /* make sure the unused bits in the last byte are zeros */
1009 if (count > 0 && size > 0 && (bitsused % 8) != 0)
1010 data[(bitsused-1)/8] &= (1 << (bitsused % 8)) - 1;
1011
1012 for (n = 0; n < count; n++) {
1013 if (field->logical_minimum < 0) /* signed values */
1014 implement(data, offset + n * size, size, s32ton(field->value[n], size));
1015 else /* unsigned values */
1016 implement(data, offset + n * size, size, field->value[n]);
1017 }
1018 }
1019
1020 /*
1021 * Create a report.
1022 */
1023
1024 void hid_output_report(struct hid_report *report, __u8 *data)
1025 {
1026 unsigned n;
1027
1028 if (report->id > 0)
1029 *data++ = report->id;
1030
1031 for (n = 0; n < report->maxfield; n++)
1032 hid_output_field(report->field[n], data);
1033 }
1034 EXPORT_SYMBOL_GPL(hid_output_report);
1035
1036 /*
1037 * Set a field value. The report this field belongs to has to be
1038 * created and transferred to the device, to set this value in the
1039 * device.
1040 */
1041
1042 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1043 {
1044 unsigned size;
1045
1046 if (!field)
1047 return -1;
1048
1049 size = field->report_size;
1050
1051 hid_dump_input(field->report->device, field->usage + offset, value);
1052
1053 if (offset >= field->report_count) {
1054 dbg_hid("offset (%d) exceeds report_count (%d)\n", offset, field->report_count);
1055 return -1;
1056 }
1057 if (field->logical_minimum < 0) {
1058 if (value != snto32(s32ton(value, size), size)) {
1059 dbg_hid("value %d is out of range\n", value);
1060 return -1;
1061 }
1062 }
1063 field->value[offset] = value;
1064 return 0;
1065 }
1066 EXPORT_SYMBOL_GPL(hid_set_field);
1067
1068 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1069 const u8 *data)
1070 {
1071 struct hid_report *report;
1072 unsigned int n = 0; /* Normally report number is 0 */
1073
1074 /* Device uses numbered reports, data[0] is report number */
1075 if (report_enum->numbered)
1076 n = *data;
1077
1078 report = report_enum->report_id_hash[n];
1079 if (report == NULL)
1080 dbg_hid("undefined report_id %u received\n", n);
1081
1082 return report;
1083 }
1084
1085 void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1086 int interrupt)
1087 {
1088 struct hid_report_enum *report_enum = hid->report_enum + type;
1089 struct hid_report *report;
1090 unsigned int a;
1091 int rsize, csize = size;
1092 u8 *cdata = data;
1093
1094 report = hid_get_report(report_enum, data);
1095 if (!report)
1096 return;
1097
1098 if (report_enum->numbered) {
1099 cdata++;
1100 csize--;
1101 }
1102
1103 rsize = ((report->size - 1) >> 3) + 1;
1104
1105 if (csize < rsize) {
1106 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1107 csize, rsize);
1108 memset(cdata + csize, 0, rsize - csize);
1109 }
1110
1111 if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1112 hid->hiddev_report_event(hid, report);
1113 if (hid->claimed & HID_CLAIMED_HIDRAW) {
1114 /* numbered reports need to be passed with the report num */
1115 if (report_enum->numbered)
1116 hidraw_report_event(hid, data - 1, size + 1);
1117 else
1118 hidraw_report_event(hid, data, size);
1119 }
1120
1121 for (a = 0; a < report->maxfield; a++)
1122 hid_input_field(hid, report->field[a], cdata, interrupt);
1123
1124 if (hid->claimed & HID_CLAIMED_INPUT)
1125 hidinput_report_event(hid, report);
1126 }
1127 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1128
1129 /**
1130 * hid_input_report - report data from lower layer (usb, bt...)
1131 *
1132 * @hid: hid device
1133 * @type: HID report type (HID_*_REPORT)
1134 * @data: report contents
1135 * @size: size of data parameter
1136 * @interrupt: distinguish between interrupt and control transfers
1137 *
1138 * This is data entry for lower layers.
1139 */
1140 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1141 {
1142 struct hid_report_enum *report_enum;
1143 struct hid_driver *hdrv;
1144 struct hid_report *report;
1145 char *buf;
1146 unsigned int i;
1147 int ret;
1148
1149 if (!hid || !hid->driver)
1150 return -ENODEV;
1151 report_enum = hid->report_enum + type;
1152 hdrv = hid->driver;
1153
1154 if (!size) {
1155 dbg_hid("empty report\n");
1156 return -1;
1157 }
1158
1159 buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
1160
1161 if (!buf) {
1162 report = hid_get_report(report_enum, data);
1163 goto nomem;
1164 }
1165
1166 snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1167 "\nreport (size %u) (%snumbered)\n", size, report_enum->numbered ? "" : "un");
1168 hid_debug_event(hid, buf);
1169
1170 report = hid_get_report(report_enum, data);
1171 if (!report) {
1172 kfree(buf);
1173 return -1;
1174 }
1175
1176 /* dump the report */
1177 snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1178 "report %d (size %u) = ", report->id, size);
1179 hid_debug_event(hid, buf);
1180 for (i = 0; i < size; i++) {
1181 snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1182 " %02x", data[i]);
1183 hid_debug_event(hid, buf);
1184 }
1185 hid_debug_event(hid, "\n");
1186
1187 kfree(buf);
1188
1189 nomem:
1190 if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1191 ret = hdrv->raw_event(hid, report, data, size);
1192 if (ret != 0)
1193 return ret < 0 ? ret : 0;
1194 }
1195
1196 hid_report_raw_event(hid, type, data, size, interrupt);
1197
1198 return 0;
1199 }
1200 EXPORT_SYMBOL_GPL(hid_input_report);
1201
1202 static bool hid_match_one_id(struct hid_device *hdev,
1203 const struct hid_device_id *id)
1204 {
1205 return id->bus == hdev->bus &&
1206 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1207 (id->product == HID_ANY_ID || id->product == hdev->product);
1208 }
1209
1210 static const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1211 const struct hid_device_id *id)
1212 {
1213 for (; id->bus; id++)
1214 if (hid_match_one_id(hdev, id))
1215 return id;
1216
1217 return NULL;
1218 }
1219
1220 static const struct hid_device_id hid_hiddev_list[] = {
1221 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1222 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1223 { }
1224 };
1225
1226 static bool hid_hiddev(struct hid_device *hdev)
1227 {
1228 return !!hid_match_id(hdev, hid_hiddev_list);
1229 }
1230
1231 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1232 {
1233 static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1234 "Joystick", "Gamepad", "Keyboard", "Keypad",
1235 "Multi-Axis Controller"
1236 };
1237 const char *type, *bus;
1238 char buf[64];
1239 unsigned int i;
1240 int len;
1241
1242 if (hdev->bus != BUS_USB)
1243 connect_mask &= ~HID_CONNECT_HIDDEV;
1244 if (hid_hiddev(hdev))
1245 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1246
1247 if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1248 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1249 hdev->claimed |= HID_CLAIMED_INPUT;
1250 if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1251 !hdev->hiddev_connect(hdev,
1252 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1253 hdev->claimed |= HID_CLAIMED_HIDDEV;
1254 if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1255 hdev->claimed |= HID_CLAIMED_HIDRAW;
1256
1257 if (!hdev->claimed) {
1258 dev_err(&hdev->dev, "claimed by neither input, hiddev nor "
1259 "hidraw\n");
1260 return -ENODEV;
1261 }
1262
1263 if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1264 (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1265 hdev->ff_init(hdev);
1266
1267 len = 0;
1268 if (hdev->claimed & HID_CLAIMED_INPUT)
1269 len += sprintf(buf + len, "input");
1270 if (hdev->claimed & HID_CLAIMED_HIDDEV)
1271 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1272 hdev->minor);
1273 if (hdev->claimed & HID_CLAIMED_HIDRAW)
1274 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1275 ((struct hidraw *)hdev->hidraw)->minor);
1276
1277 type = "Device";
1278 for (i = 0; i < hdev->maxcollection; i++) {
1279 struct hid_collection *col = &hdev->collection[i];
1280 if (col->type == HID_COLLECTION_APPLICATION &&
1281 (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1282 (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1283 type = types[col->usage & 0xffff];
1284 break;
1285 }
1286 }
1287
1288 switch (hdev->bus) {
1289 case BUS_USB:
1290 bus = "USB";
1291 break;
1292 case BUS_BLUETOOTH:
1293 bus = "BLUETOOTH";
1294 break;
1295 default:
1296 bus = "<UNKNOWN>";
1297 }
1298
1299 dev_info(&hdev->dev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1300 buf, bus, hdev->version >> 8, hdev->version & 0xff,
1301 type, hdev->name, hdev->phys);
1302
1303 return 0;
1304 }
1305 EXPORT_SYMBOL_GPL(hid_connect);
1306
1307 void hid_disconnect(struct hid_device *hdev)
1308 {
1309 if (hdev->claimed & HID_CLAIMED_INPUT)
1310 hidinput_disconnect(hdev);
1311 if (hdev->claimed & HID_CLAIMED_HIDDEV)
1312 hdev->hiddev_disconnect(hdev);
1313 if (hdev->claimed & HID_CLAIMED_HIDRAW)
1314 hidraw_disconnect(hdev);
1315 }
1316 EXPORT_SYMBOL_GPL(hid_disconnect);
1317
1318 /* a list of devices for which there is a specialized driver on HID bus */
1319 static const struct hid_device_id hid_blacklist[] = {
1320 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1321 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1322 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) },
1323 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1324 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1325 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1326 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1327 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1328 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1329 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1330 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1331 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1332 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1333 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1334 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1335 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1336 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1337 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1338 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1339 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1340 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1341 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1342 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1343 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1344 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1345 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1346 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1347 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1348 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1349 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1350 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1351 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1352 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1353 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1354 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1355 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1356 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1357 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1358 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1359 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1360 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1361 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1362 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1363 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1364 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1365 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1366 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1367 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1368 { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1369 { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1370 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1371 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1372 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1373 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1374 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1375 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1376 { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1377 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1378 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1379 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1380 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1381 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1382 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1383 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1384 { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1385 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1386 { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1387 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1388 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1389 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1390 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1391 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1392 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1393 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1394 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1395 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1396 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1397 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1398 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1399 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1400 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1401 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1402 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1403 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1404 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1405 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1406 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1407 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1408 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1409 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1410 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1411 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1412 { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1413 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1414 { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1415 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1416 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1417 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1418 { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1419 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1420 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1421 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1422 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1423 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1424 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1425 { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1426 { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1427 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1428 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1429 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1430 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1431
1432 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1433 { }
1434 };
1435
1436 struct hid_dynid {
1437 struct list_head list;
1438 struct hid_device_id id;
1439 };
1440
1441 /**
1442 * store_new_id - add a new HID device ID to this driver and re-probe devices
1443 * @driver: target device driver
1444 * @buf: buffer for scanning device ID data
1445 * @count: input size
1446 *
1447 * Adds a new dynamic hid device ID to this driver,
1448 * and causes the driver to probe for all devices again.
1449 */
1450 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1451 size_t count)
1452 {
1453 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1454 struct hid_dynid *dynid;
1455 __u32 bus, vendor, product;
1456 unsigned long driver_data = 0;
1457 int ret;
1458
1459 ret = sscanf(buf, "%x %x %x %lx",
1460 &bus, &vendor, &product, &driver_data);
1461 if (ret < 3)
1462 return -EINVAL;
1463
1464 dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1465 if (!dynid)
1466 return -ENOMEM;
1467
1468 dynid->id.bus = bus;
1469 dynid->id.vendor = vendor;
1470 dynid->id.product = product;
1471 dynid->id.driver_data = driver_data;
1472
1473 spin_lock(&hdrv->dyn_lock);
1474 list_add_tail(&dynid->list, &hdrv->dyn_list);
1475 spin_unlock(&hdrv->dyn_lock);
1476
1477 ret = 0;
1478 if (get_driver(&hdrv->driver)) {
1479 ret = driver_attach(&hdrv->driver);
1480 put_driver(&hdrv->driver);
1481 }
1482
1483 return ret ? : count;
1484 }
1485 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1486
1487 static void hid_free_dynids(struct hid_driver *hdrv)
1488 {
1489 struct hid_dynid *dynid, *n;
1490
1491 spin_lock(&hdrv->dyn_lock);
1492 list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1493 list_del(&dynid->list);
1494 kfree(dynid);
1495 }
1496 spin_unlock(&hdrv->dyn_lock);
1497 }
1498
1499 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1500 struct hid_driver *hdrv)
1501 {
1502 struct hid_dynid *dynid;
1503
1504 spin_lock(&hdrv->dyn_lock);
1505 list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1506 if (hid_match_one_id(hdev, &dynid->id)) {
1507 spin_unlock(&hdrv->dyn_lock);
1508 return &dynid->id;
1509 }
1510 }
1511 spin_unlock(&hdrv->dyn_lock);
1512
1513 return hid_match_id(hdev, hdrv->id_table);
1514 }
1515
1516 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1517 {
1518 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1519 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1520
1521 if (!hid_match_device(hdev, hdrv))
1522 return 0;
1523
1524 /* generic wants all non-blacklisted */
1525 if (!strncmp(hdrv->name, "generic-", 8))
1526 return !hid_match_id(hdev, hid_blacklist);
1527
1528 return 1;
1529 }
1530
1531 static int hid_device_probe(struct device *dev)
1532 {
1533 struct hid_driver *hdrv = container_of(dev->driver,
1534 struct hid_driver, driver);
1535 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1536 const struct hid_device_id *id;
1537 int ret = 0;
1538
1539 if (!hdev->driver) {
1540 id = hid_match_device(hdev, hdrv);
1541 if (id == NULL)
1542 return -ENODEV;
1543
1544 hdev->driver = hdrv;
1545 if (hdrv->probe) {
1546 ret = hdrv->probe(hdev, id);
1547 } else { /* default probe */
1548 ret = hid_parse(hdev);
1549 if (!ret)
1550 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1551 }
1552 if (ret)
1553 hdev->driver = NULL;
1554 }
1555 return ret;
1556 }
1557
1558 static int hid_device_remove(struct device *dev)
1559 {
1560 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1561 struct hid_driver *hdrv = hdev->driver;
1562
1563 if (hdrv) {
1564 if (hdrv->remove)
1565 hdrv->remove(hdev);
1566 else /* default remove */
1567 hid_hw_stop(hdev);
1568 hdev->driver = NULL;
1569 }
1570
1571 return 0;
1572 }
1573
1574 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1575 {
1576 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1577
1578 if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
1579 hdev->bus, hdev->vendor, hdev->product))
1580 return -ENOMEM;
1581
1582 if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
1583 return -ENOMEM;
1584
1585 if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
1586 return -ENOMEM;
1587
1588 if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
1589 return -ENOMEM;
1590
1591 if (add_uevent_var(env, "MODALIAS=hid:b%04Xv%08Xp%08X",
1592 hdev->bus, hdev->vendor, hdev->product))
1593 return -ENOMEM;
1594
1595 return 0;
1596 }
1597
1598 static struct bus_type hid_bus_type = {
1599 .name = "hid",
1600 .match = hid_bus_match,
1601 .probe = hid_device_probe,
1602 .remove = hid_device_remove,
1603 .uevent = hid_uevent,
1604 };
1605
1606 /* a list of devices that shouldn't be handled by HID core at all */
1607 static const struct hid_device_id hid_ignore_list[] = {
1608 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
1609 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
1610 { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
1611 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
1612 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
1613 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
1614 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
1615 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
1616 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
1617 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
1618 { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
1619 { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
1620 { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM)},
1621 { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM2)},
1622 { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
1623 { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
1624 { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
1625 { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
1626 { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
1627 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
1628 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
1629 { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
1630 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
1631 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
1632 { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
1633 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
1634 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
1635 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0003) },
1636 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
1637 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
1638 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
1639 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
1640 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
1641 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
1642 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
1643 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
1644 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
1645 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
1646 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
1647 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
1648 { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
1649 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
1650 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
1651 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
1652 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
1653 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
1654 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
1655 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
1656 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
1657 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
1658 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
1659 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
1660 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
1661 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
1662 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
1663 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
1664 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
1665 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
1666 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
1667 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
1668 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
1669 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
1670 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
1671 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
1672 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
1673 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
1674 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
1675 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
1676 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
1677 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
1678 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
1679 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
1680 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
1681 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
1682 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
1683 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
1684 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
1685 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
1686 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
1687 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
1688 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
1689 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
1690 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
1691 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
1692 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
1693 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
1694 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
1695 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
1696 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
1697 { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
1698 { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
1699 { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
1700 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
1701 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
1702 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
1703 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
1704 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
1705 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
1706 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
1707 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY1) },
1708 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
1709 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
1710 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
1711 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
1712 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
1713 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
1714 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
1715 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
1716 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
1717 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
1718 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
1719 { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
1720 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
1721 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
1722 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
1723 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
1724 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
1725 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
1726 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
1727 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
1728 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
1729 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
1730 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
1731 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
1732 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
1733 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
1734 { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
1735 { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
1736 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
1737 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
1738 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
1739 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
1740 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
1741 { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
1742 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
1743 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
1744 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
1745 { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
1746 { }
1747 };
1748
1749 /**
1750 * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
1751 *
1752 * There are composite devices for which we want to ignore only a certain
1753 * interface. This is a list of devices for which only the mouse interface will
1754 * be ignored. This allows a dedicated driver to take care of the interface.
1755 */
1756 static const struct hid_device_id hid_mouse_ignore_list[] = {
1757 /* appletouch driver */
1758 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1759 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1760 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1761 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1762 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1763 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1764 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1765 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1766 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1767 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1768 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1769 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1770 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1771 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1772 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1773 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1774 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1775 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1776 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1777 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1778 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1779 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1780 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1781 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1782 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1783 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1784 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1785 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1786 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1787 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1788 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1789 { }
1790 };
1791
1792 static bool hid_ignore(struct hid_device *hdev)
1793 {
1794 switch (hdev->vendor) {
1795 case USB_VENDOR_ID_CODEMERCS:
1796 /* ignore all Code Mercenaries IOWarrior devices */
1797 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
1798 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
1799 return true;
1800 break;
1801 case USB_VENDOR_ID_LOGITECH:
1802 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
1803 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
1804 return true;
1805 break;
1806 case USB_VENDOR_ID_SOUNDGRAPH:
1807 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
1808 hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
1809 return true;
1810 break;
1811 }
1812
1813 if (hdev->type == HID_TYPE_USBMOUSE &&
1814 hid_match_id(hdev, hid_mouse_ignore_list))
1815 return true;
1816
1817 return !!hid_match_id(hdev, hid_ignore_list);
1818 }
1819
1820 int hid_add_device(struct hid_device *hdev)
1821 {
1822 static atomic_t id = ATOMIC_INIT(0);
1823 int ret;
1824
1825 if (WARN_ON(hdev->status & HID_STAT_ADDED))
1826 return -EBUSY;
1827
1828 /* we need to kill them here, otherwise they will stay allocated to
1829 * wait for coming driver */
1830 if (hid_ignore(hdev))
1831 return -ENODEV;
1832
1833 /* XXX hack, any other cleaner solution after the driver core
1834 * is converted to allow more than 20 bytes as the device name? */
1835 dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
1836 hdev->vendor, hdev->product, atomic_inc_return(&id));
1837
1838 ret = device_add(&hdev->dev);
1839 if (!ret)
1840 hdev->status |= HID_STAT_ADDED;
1841
1842 hid_debug_register(hdev, dev_name(&hdev->dev));
1843
1844 return ret;
1845 }
1846 EXPORT_SYMBOL_GPL(hid_add_device);
1847
1848 /**
1849 * hid_allocate_device - allocate new hid device descriptor
1850 *
1851 * Allocate and initialize hid device, so that hid_destroy_device might be
1852 * used to free it.
1853 *
1854 * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
1855 * error value.
1856 */
1857 struct hid_device *hid_allocate_device(void)
1858 {
1859 struct hid_device *hdev;
1860 unsigned int i;
1861 int ret = -ENOMEM;
1862
1863 hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
1864 if (hdev == NULL)
1865 return ERR_PTR(ret);
1866
1867 device_initialize(&hdev->dev);
1868 hdev->dev.release = hid_device_release;
1869 hdev->dev.bus = &hid_bus_type;
1870
1871 hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
1872 sizeof(struct hid_collection), GFP_KERNEL);
1873 if (hdev->collection == NULL)
1874 goto err;
1875 hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
1876
1877 for (i = 0; i < HID_REPORT_TYPES; i++)
1878 INIT_LIST_HEAD(&hdev->report_enum[i].report_list);
1879
1880 init_waitqueue_head(&hdev->debug_wait);
1881 INIT_LIST_HEAD(&hdev->debug_list);
1882
1883 return hdev;
1884 err:
1885 put_device(&hdev->dev);
1886 return ERR_PTR(ret);
1887 }
1888 EXPORT_SYMBOL_GPL(hid_allocate_device);
1889
1890 static void hid_remove_device(struct hid_device *hdev)
1891 {
1892 if (hdev->status & HID_STAT_ADDED) {
1893 device_del(&hdev->dev);
1894 hid_debug_unregister(hdev);
1895 hdev->status &= ~HID_STAT_ADDED;
1896 }
1897 }
1898
1899 /**
1900 * hid_destroy_device - free previously allocated device
1901 *
1902 * @hdev: hid device
1903 *
1904 * If you allocate hid_device through hid_allocate_device, you should ever
1905 * free by this function.
1906 */
1907 void hid_destroy_device(struct hid_device *hdev)
1908 {
1909 hid_remove_device(hdev);
1910 put_device(&hdev->dev);
1911 }
1912 EXPORT_SYMBOL_GPL(hid_destroy_device);
1913
1914 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
1915 const char *mod_name)
1916 {
1917 int ret;
1918
1919 hdrv->driver.name = hdrv->name;
1920 hdrv->driver.bus = &hid_bus_type;
1921 hdrv->driver.owner = owner;
1922 hdrv->driver.mod_name = mod_name;
1923
1924 INIT_LIST_HEAD(&hdrv->dyn_list);
1925 spin_lock_init(&hdrv->dyn_lock);
1926
1927 ret = driver_register(&hdrv->driver);
1928 if (ret)
1929 return ret;
1930
1931 ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
1932 if (ret)
1933 driver_unregister(&hdrv->driver);
1934
1935 return ret;
1936 }
1937 EXPORT_SYMBOL_GPL(__hid_register_driver);
1938
1939 void hid_unregister_driver(struct hid_driver *hdrv)
1940 {
1941 driver_remove_file(&hdrv->driver, &driver_attr_new_id);
1942 driver_unregister(&hdrv->driver);
1943 hid_free_dynids(hdrv);
1944 }
1945 EXPORT_SYMBOL_GPL(hid_unregister_driver);
1946
1947 int hid_check_keys_pressed(struct hid_device *hid)
1948 {
1949 struct hid_input *hidinput;
1950 int i;
1951
1952 if (!(hid->claimed & HID_CLAIMED_INPUT))
1953 return 0;
1954
1955 list_for_each_entry(hidinput, &hid->inputs, list) {
1956 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
1957 if (hidinput->input->key[i])
1958 return 1;
1959 }
1960
1961 return 0;
1962 }
1963
1964 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
1965
1966 static int __init hid_init(void)
1967 {
1968 int ret;
1969
1970 if (hid_debug)
1971 printk(KERN_WARNING "HID: hid_debug is now used solely for parser and driver debugging.\n"
1972 "HID: debugfs is now used for inspecting the device (report descriptor, reports)\n");
1973
1974 ret = bus_register(&hid_bus_type);
1975 if (ret) {
1976 printk(KERN_ERR "HID: can't register hid bus\n");
1977 goto err;
1978 }
1979
1980 ret = hidraw_init();
1981 if (ret)
1982 goto err_bus;
1983
1984 hid_debug_init();
1985
1986 return 0;
1987 err_bus:
1988 bus_unregister(&hid_bus_type);
1989 err:
1990 return ret;
1991 }
1992
1993 static void __exit hid_exit(void)
1994 {
1995 hid_debug_exit();
1996 hidraw_exit();
1997 bus_unregister(&hid_bus_type);
1998 }
1999
2000 module_init(hid_init);
2001 module_exit(hid_exit);
2002
2003 MODULE_LICENSE(DRIVER_LICENSE);
2004
Linux with added FPC-III support