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[deliverable/linux.git] / drivers / hid / hid-core.c
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) 2006-2012 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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18
19 #include <linux/module.h>
20 #include <linux/slab.h>
21 #include <linux/init.h>
22 #include <linux/kernel.h>
23 #include <linux/list.h>
24 #include <linux/mm.h>
25 #include <linux/spinlock.h>
26 #include <asm/unaligned.h>
27 #include <asm/byteorder.h>
28 #include <linux/input.h>
29 #include <linux/wait.h>
30 #include <linux/vmalloc.h>
31 #include <linux/sched.h>
32 #include <linux/semaphore.h>
33
34 #include <linux/hid.h>
35 #include <linux/hiddev.h>
36 #include <linux/hid-debug.h>
37 #include <linux/hidraw.h>
38
39 #include "hid-ids.h"
40
41 /*
42 * Version Information
43 */
44
45 #define DRIVER_DESC "HID core driver"
46 #define DRIVER_LICENSE "GPL"
47
48 int hid_debug = 0;
49 module_param_named(debug, hid_debug, int, 0600);
50 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
51 EXPORT_SYMBOL_GPL(hid_debug);
52
53 static int hid_ignore_special_drivers = 0;
54 module_param_named(ignore_special_drivers, hid_ignore_special_drivers, int, 0600);
55 MODULE_PARM_DESC(debug, "Ignore any special drivers and handle all devices by generic driver");
56
57 /*
58 * Register a new report for a device.
59 */
60
61 struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
62 {
63 struct hid_report_enum *report_enum = device->report_enum + type;
64 struct hid_report *report;
65
66 if (id >= HID_MAX_IDS)
67 return NULL;
68 if (report_enum->report_id_hash[id])
69 return report_enum->report_id_hash[id];
70
71 report = kzalloc(sizeof(struct hid_report), GFP_KERNEL);
72 if (!report)
73 return NULL;
74
75 if (id != 0)
76 report_enum->numbered = 1;
77
78 report->id = id;
79 report->type = type;
80 report->size = 0;
81 report->device = device;
82 report_enum->report_id_hash[id] = report;
83
84 list_add_tail(&report->list, &report_enum->report_list);
85
86 return report;
87 }
88 EXPORT_SYMBOL_GPL(hid_register_report);
89
90 /*
91 * Register a new field for this report.
92 */
93
94 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
95 {
96 struct hid_field *field;
97
98 if (report->maxfield == HID_MAX_FIELDS) {
99 hid_err(report->device, "too many fields in report\n");
100 return NULL;
101 }
102
103 field = kzalloc((sizeof(struct hid_field) +
104 usages * sizeof(struct hid_usage) +
105 values * sizeof(unsigned)), GFP_KERNEL);
106 if (!field)
107 return NULL;
108
109 field->index = report->maxfield++;
110 report->field[field->index] = field;
111 field->usage = (struct hid_usage *)(field + 1);
112 field->value = (s32 *)(field->usage + usages);
113 field->report = report;
114
115 return field;
116 }
117
118 /*
119 * Open a collection. The type/usage is pushed on the stack.
120 */
121
122 static int open_collection(struct hid_parser *parser, unsigned type)
123 {
124 struct hid_collection *collection;
125 unsigned usage;
126
127 usage = parser->local.usage[0];
128
129 if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
130 hid_err(parser->device, "collection stack overflow\n");
131 return -EINVAL;
132 }
133
134 if (parser->device->maxcollection == parser->device->collection_size) {
135 collection = kmalloc(sizeof(struct hid_collection) *
136 parser->device->collection_size * 2, GFP_KERNEL);
137 if (collection == NULL) {
138 hid_err(parser->device, "failed to reallocate collection array\n");
139 return -ENOMEM;
140 }
141 memcpy(collection, parser->device->collection,
142 sizeof(struct hid_collection) *
143 parser->device->collection_size);
144 memset(collection + parser->device->collection_size, 0,
145 sizeof(struct hid_collection) *
146 parser->device->collection_size);
147 kfree(parser->device->collection);
148 parser->device->collection = collection;
149 parser->device->collection_size *= 2;
150 }
151
152 parser->collection_stack[parser->collection_stack_ptr++] =
153 parser->device->maxcollection;
154
155 collection = parser->device->collection +
156 parser->device->maxcollection++;
157 collection->type = type;
158 collection->usage = usage;
159 collection->level = parser->collection_stack_ptr - 1;
160
161 if (type == HID_COLLECTION_APPLICATION)
162 parser->device->maxapplication++;
163
164 return 0;
165 }
166
167 /*
168 * Close a collection.
169 */
170
171 static int close_collection(struct hid_parser *parser)
172 {
173 if (!parser->collection_stack_ptr) {
174 hid_err(parser->device, "collection stack underflow\n");
175 return -EINVAL;
176 }
177 parser->collection_stack_ptr--;
178 return 0;
179 }
180
181 /*
182 * Climb up the stack, search for the specified collection type
183 * and return the usage.
184 */
185
186 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
187 {
188 struct hid_collection *collection = parser->device->collection;
189 int n;
190
191 for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
192 unsigned index = parser->collection_stack[n];
193 if (collection[index].type == type)
194 return collection[index].usage;
195 }
196 return 0; /* we know nothing about this usage type */
197 }
198
199 /*
200 * Add a usage to the temporary parser table.
201 */
202
203 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
204 {
205 if (parser->local.usage_index >= HID_MAX_USAGES) {
206 hid_err(parser->device, "usage index exceeded\n");
207 return -1;
208 }
209 parser->local.usage[parser->local.usage_index] = usage;
210 parser->local.collection_index[parser->local.usage_index] =
211 parser->collection_stack_ptr ?
212 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
213 parser->local.usage_index++;
214 return 0;
215 }
216
217 /*
218 * Register a new field for this report.
219 */
220
221 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
222 {
223 struct hid_report *report;
224 struct hid_field *field;
225 unsigned usages;
226 unsigned offset;
227 unsigned i;
228
229 report = hid_register_report(parser->device, report_type, parser->global.report_id);
230 if (!report) {
231 hid_err(parser->device, "hid_register_report failed\n");
232 return -1;
233 }
234
235 /* Handle both signed and unsigned cases properly */
236 if ((parser->global.logical_minimum < 0 &&
237 parser->global.logical_maximum <
238 parser->global.logical_minimum) ||
239 (parser->global.logical_minimum >= 0 &&
240 (__u32)parser->global.logical_maximum <
241 (__u32)parser->global.logical_minimum)) {
242 dbg_hid("logical range invalid 0x%x 0x%x\n",
243 parser->global.logical_minimum,
244 parser->global.logical_maximum);
245 return -1;
246 }
247
248 offset = report->size;
249 report->size += parser->global.report_size * parser->global.report_count;
250
251 if (!parser->local.usage_index) /* Ignore padding fields */
252 return 0;
253
254 usages = max_t(unsigned, parser->local.usage_index,
255 parser->global.report_count);
256
257 field = hid_register_field(report, usages, parser->global.report_count);
258 if (!field)
259 return 0;
260
261 field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
262 field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
263 field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
264
265 for (i = 0; i < usages; i++) {
266 unsigned j = i;
267 /* Duplicate the last usage we parsed if we have excess values */
268 if (i >= parser->local.usage_index)
269 j = parser->local.usage_index - 1;
270 field->usage[i].hid = parser->local.usage[j];
271 field->usage[i].collection_index =
272 parser->local.collection_index[j];
273 field->usage[i].usage_index = i;
274 }
275
276 field->maxusage = usages;
277 field->flags = flags;
278 field->report_offset = offset;
279 field->report_type = report_type;
280 field->report_size = parser->global.report_size;
281 field->report_count = parser->global.report_count;
282 field->logical_minimum = parser->global.logical_minimum;
283 field->logical_maximum = parser->global.logical_maximum;
284 field->physical_minimum = parser->global.physical_minimum;
285 field->physical_maximum = parser->global.physical_maximum;
286 field->unit_exponent = parser->global.unit_exponent;
287 field->unit = parser->global.unit;
288
289 return 0;
290 }
291
292 /*
293 * Read data value from item.
294 */
295
296 static u32 item_udata(struct hid_item *item)
297 {
298 switch (item->size) {
299 case 1: return item->data.u8;
300 case 2: return item->data.u16;
301 case 4: return item->data.u32;
302 }
303 return 0;
304 }
305
306 static s32 item_sdata(struct hid_item *item)
307 {
308 switch (item->size) {
309 case 1: return item->data.s8;
310 case 2: return item->data.s16;
311 case 4: return item->data.s32;
312 }
313 return 0;
314 }
315
316 /*
317 * Process a global item.
318 */
319
320 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
321 {
322 __u32 raw_value;
323 switch (item->tag) {
324 case HID_GLOBAL_ITEM_TAG_PUSH:
325
326 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
327 hid_err(parser->device, "global environment stack overflow\n");
328 return -1;
329 }
330
331 memcpy(parser->global_stack + parser->global_stack_ptr++,
332 &parser->global, sizeof(struct hid_global));
333 return 0;
334
335 case HID_GLOBAL_ITEM_TAG_POP:
336
337 if (!parser->global_stack_ptr) {
338 hid_err(parser->device, "global environment stack underflow\n");
339 return -1;
340 }
341
342 memcpy(&parser->global, parser->global_stack +
343 --parser->global_stack_ptr, sizeof(struct hid_global));
344 return 0;
345
346 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
347 parser->global.usage_page = item_udata(item);
348 return 0;
349
350 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
351 parser->global.logical_minimum = item_sdata(item);
352 return 0;
353
354 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
355 if (parser->global.logical_minimum < 0)
356 parser->global.logical_maximum = item_sdata(item);
357 else
358 parser->global.logical_maximum = item_udata(item);
359 return 0;
360
361 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
362 parser->global.physical_minimum = item_sdata(item);
363 return 0;
364
365 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
366 if (parser->global.physical_minimum < 0)
367 parser->global.physical_maximum = item_sdata(item);
368 else
369 parser->global.physical_maximum = item_udata(item);
370 return 0;
371
372 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
373 /* Units exponent negative numbers are given through a
374 * two's complement.
375 * See "6.2.2.7 Global Items" for more information. */
376 raw_value = item_udata(item);
377 if (!(raw_value & 0xfffffff0))
378 parser->global.unit_exponent = hid_snto32(raw_value, 4);
379 else
380 parser->global.unit_exponent = raw_value;
381 return 0;
382
383 case HID_GLOBAL_ITEM_TAG_UNIT:
384 parser->global.unit = item_udata(item);
385 return 0;
386
387 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
388 parser->global.report_size = item_udata(item);
389 if (parser->global.report_size > 128) {
390 hid_err(parser->device, "invalid report_size %d\n",
391 parser->global.report_size);
392 return -1;
393 }
394 return 0;
395
396 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
397 parser->global.report_count = item_udata(item);
398 if (parser->global.report_count > HID_MAX_USAGES) {
399 hid_err(parser->device, "invalid report_count %d\n",
400 parser->global.report_count);
401 return -1;
402 }
403 return 0;
404
405 case HID_GLOBAL_ITEM_TAG_REPORT_ID:
406 parser->global.report_id = item_udata(item);
407 if (parser->global.report_id == 0 ||
408 parser->global.report_id >= HID_MAX_IDS) {
409 hid_err(parser->device, "report_id %u is invalid\n",
410 parser->global.report_id);
411 return -1;
412 }
413 return 0;
414
415 default:
416 hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
417 return -1;
418 }
419 }
420
421 /*
422 * Process a local item.
423 */
424
425 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
426 {
427 __u32 data;
428 unsigned n;
429
430 data = item_udata(item);
431
432 switch (item->tag) {
433 case HID_LOCAL_ITEM_TAG_DELIMITER:
434
435 if (data) {
436 /*
437 * We treat items before the first delimiter
438 * as global to all usage sets (branch 0).
439 * In the moment we process only these global
440 * items and the first delimiter set.
441 */
442 if (parser->local.delimiter_depth != 0) {
443 hid_err(parser->device, "nested delimiters\n");
444 return -1;
445 }
446 parser->local.delimiter_depth++;
447 parser->local.delimiter_branch++;
448 } else {
449 if (parser->local.delimiter_depth < 1) {
450 hid_err(parser->device, "bogus close delimiter\n");
451 return -1;
452 }
453 parser->local.delimiter_depth--;
454 }
455 return 0;
456
457 case HID_LOCAL_ITEM_TAG_USAGE:
458
459 if (parser->local.delimiter_branch > 1) {
460 dbg_hid("alternative usage ignored\n");
461 return 0;
462 }
463
464 if (item->size <= 2)
465 data = (parser->global.usage_page << 16) + data;
466
467 return hid_add_usage(parser, data);
468
469 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
470
471 if (parser->local.delimiter_branch > 1) {
472 dbg_hid("alternative usage ignored\n");
473 return 0;
474 }
475
476 if (item->size <= 2)
477 data = (parser->global.usage_page << 16) + data;
478
479 parser->local.usage_minimum = data;
480 return 0;
481
482 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
483
484 if (parser->local.delimiter_branch > 1) {
485 dbg_hid("alternative usage ignored\n");
486 return 0;
487 }
488
489 if (item->size <= 2)
490 data = (parser->global.usage_page << 16) + data;
491
492 for (n = parser->local.usage_minimum; n <= data; n++)
493 if (hid_add_usage(parser, n)) {
494 dbg_hid("hid_add_usage failed\n");
495 return -1;
496 }
497 return 0;
498
499 default:
500
501 dbg_hid("unknown local item tag 0x%x\n", item->tag);
502 return 0;
503 }
504 return 0;
505 }
506
507 /*
508 * Process a main item.
509 */
510
511 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
512 {
513 __u32 data;
514 int ret;
515
516 data = item_udata(item);
517
518 switch (item->tag) {
519 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
520 ret = open_collection(parser, data & 0xff);
521 break;
522 case HID_MAIN_ITEM_TAG_END_COLLECTION:
523 ret = close_collection(parser);
524 break;
525 case HID_MAIN_ITEM_TAG_INPUT:
526 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
527 break;
528 case HID_MAIN_ITEM_TAG_OUTPUT:
529 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
530 break;
531 case HID_MAIN_ITEM_TAG_FEATURE:
532 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
533 break;
534 default:
535 hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
536 ret = 0;
537 }
538
539 memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */
540
541 return ret;
542 }
543
544 /*
545 * Process a reserved item.
546 */
547
548 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
549 {
550 dbg_hid("reserved item type, tag 0x%x\n", item->tag);
551 return 0;
552 }
553
554 /*
555 * Free a report and all registered fields. The field->usage and
556 * field->value table's are allocated behind the field, so we need
557 * only to free(field) itself.
558 */
559
560 static void hid_free_report(struct hid_report *report)
561 {
562 unsigned n;
563
564 for (n = 0; n < report->maxfield; n++)
565 kfree(report->field[n]);
566 kfree(report);
567 }
568
569 /*
570 * Close report. This function returns the device
571 * state to the point prior to hid_open_report().
572 */
573 static void hid_close_report(struct hid_device *device)
574 {
575 unsigned i, j;
576
577 for (i = 0; i < HID_REPORT_TYPES; i++) {
578 struct hid_report_enum *report_enum = device->report_enum + i;
579
580 for (j = 0; j < HID_MAX_IDS; j++) {
581 struct hid_report *report = report_enum->report_id_hash[j];
582 if (report)
583 hid_free_report(report);
584 }
585 memset(report_enum, 0, sizeof(*report_enum));
586 INIT_LIST_HEAD(&report_enum->report_list);
587 }
588
589 kfree(device->rdesc);
590 device->rdesc = NULL;
591 device->rsize = 0;
592
593 kfree(device->collection);
594 device->collection = NULL;
595 device->collection_size = 0;
596 device->maxcollection = 0;
597 device->maxapplication = 0;
598
599 device->status &= ~HID_STAT_PARSED;
600 }
601
602 /*
603 * Free a device structure, all reports, and all fields.
604 */
605
606 static void hid_device_release(struct device *dev)
607 {
608 struct hid_device *hid = container_of(dev, struct hid_device, dev);
609
610 hid_close_report(hid);
611 kfree(hid->dev_rdesc);
612 kfree(hid);
613 }
614
615 /*
616 * Fetch a report description item from the data stream. We support long
617 * items, though they are not used yet.
618 */
619
620 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
621 {
622 u8 b;
623
624 if ((end - start) <= 0)
625 return NULL;
626
627 b = *start++;
628
629 item->type = (b >> 2) & 3;
630 item->tag = (b >> 4) & 15;
631
632 if (item->tag == HID_ITEM_TAG_LONG) {
633
634 item->format = HID_ITEM_FORMAT_LONG;
635
636 if ((end - start) < 2)
637 return NULL;
638
639 item->size = *start++;
640 item->tag = *start++;
641
642 if ((end - start) < item->size)
643 return NULL;
644
645 item->data.longdata = start;
646 start += item->size;
647 return start;
648 }
649
650 item->format = HID_ITEM_FORMAT_SHORT;
651 item->size = b & 3;
652
653 switch (item->size) {
654 case 0:
655 return start;
656
657 case 1:
658 if ((end - start) < 1)
659 return NULL;
660 item->data.u8 = *start++;
661 return start;
662
663 case 2:
664 if ((end - start) < 2)
665 return NULL;
666 item->data.u16 = get_unaligned_le16(start);
667 start = (__u8 *)((__le16 *)start + 1);
668 return start;
669
670 case 3:
671 item->size++;
672 if ((end - start) < 4)
673 return NULL;
674 item->data.u32 = get_unaligned_le32(start);
675 start = (__u8 *)((__le32 *)start + 1);
676 return start;
677 }
678
679 return NULL;
680 }
681
682 static void hid_scan_input_usage(struct hid_parser *parser, u32 usage)
683 {
684 struct hid_device *hid = parser->device;
685
686 if (usage == HID_DG_CONTACTID)
687 hid->group = HID_GROUP_MULTITOUCH;
688 }
689
690 static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage)
691 {
692 if (usage == 0xff0000c5 && parser->global.report_count == 256 &&
693 parser->global.report_size == 8)
694 parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;
695 }
696
697 static void hid_scan_collection(struct hid_parser *parser, unsigned type)
698 {
699 struct hid_device *hid = parser->device;
700
701 if (((parser->global.usage_page << 16) == HID_UP_SENSOR) &&
702 type == HID_COLLECTION_PHYSICAL)
703 hid->group = HID_GROUP_SENSOR_HUB;
704 }
705
706 static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)
707 {
708 __u32 data;
709 int i;
710
711 data = item_udata(item);
712
713 switch (item->tag) {
714 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
715 hid_scan_collection(parser, data & 0xff);
716 break;
717 case HID_MAIN_ITEM_TAG_END_COLLECTION:
718 break;
719 case HID_MAIN_ITEM_TAG_INPUT:
720 for (i = 0; i < parser->local.usage_index; i++)
721 hid_scan_input_usage(parser, parser->local.usage[i]);
722 break;
723 case HID_MAIN_ITEM_TAG_OUTPUT:
724 break;
725 case HID_MAIN_ITEM_TAG_FEATURE:
726 for (i = 0; i < parser->local.usage_index; i++)
727 hid_scan_feature_usage(parser, parser->local.usage[i]);
728 break;
729 }
730
731 /* Reset the local parser environment */
732 memset(&parser->local, 0, sizeof(parser->local));
733
734 return 0;
735 }
736
737 /*
738 * Scan a report descriptor before the device is added to the bus.
739 * Sets device groups and other properties that determine what driver
740 * to load.
741 */
742 static int hid_scan_report(struct hid_device *hid)
743 {
744 struct hid_parser *parser;
745 struct hid_item item;
746 __u8 *start = hid->dev_rdesc;
747 __u8 *end = start + hid->dev_rsize;
748 static int (*dispatch_type[])(struct hid_parser *parser,
749 struct hid_item *item) = {
750 hid_scan_main,
751 hid_parser_global,
752 hid_parser_local,
753 hid_parser_reserved
754 };
755
756 parser = vzalloc(sizeof(struct hid_parser));
757 if (!parser)
758 return -ENOMEM;
759
760 parser->device = hid;
761 hid->group = HID_GROUP_GENERIC;
762
763 /*
764 * The parsing is simpler than the one in hid_open_report() as we should
765 * be robust against hid errors. Those errors will be raised by
766 * hid_open_report() anyway.
767 */
768 while ((start = fetch_item(start, end, &item)) != NULL)
769 dispatch_type[item.type](parser, &item);
770
771 /*
772 * Handle special flags set during scanning.
773 */
774 if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) &&
775 (hid->group == HID_GROUP_MULTITOUCH))
776 hid->group = HID_GROUP_MULTITOUCH_WIN_8;
777
778 vfree(parser);
779 return 0;
780 }
781
782 /**
783 * hid_parse_report - parse device report
784 *
785 * @device: hid device
786 * @start: report start
787 * @size: report size
788 *
789 * Allocate the device report as read by the bus driver. This function should
790 * only be called from parse() in ll drivers.
791 */
792 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
793 {
794 hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
795 if (!hid->dev_rdesc)
796 return -ENOMEM;
797 hid->dev_rsize = size;
798 return 0;
799 }
800 EXPORT_SYMBOL_GPL(hid_parse_report);
801
802 static const char * const hid_report_names[] = {
803 "HID_INPUT_REPORT",
804 "HID_OUTPUT_REPORT",
805 "HID_FEATURE_REPORT",
806 };
807 /**
808 * hid_validate_values - validate existing device report's value indexes
809 *
810 * @device: hid device
811 * @type: which report type to examine
812 * @id: which report ID to examine (0 for first)
813 * @field_index: which report field to examine
814 * @report_counts: expected number of values
815 *
816 * Validate the number of values in a given field of a given report, after
817 * parsing.
818 */
819 struct hid_report *hid_validate_values(struct hid_device *hid,
820 unsigned int type, unsigned int id,
821 unsigned int field_index,
822 unsigned int report_counts)
823 {
824 struct hid_report *report;
825
826 if (type > HID_FEATURE_REPORT) {
827 hid_err(hid, "invalid HID report type %u\n", type);
828 return NULL;
829 }
830
831 if (id >= HID_MAX_IDS) {
832 hid_err(hid, "invalid HID report id %u\n", id);
833 return NULL;
834 }
835
836 /*
837 * Explicitly not using hid_get_report() here since it depends on
838 * ->numbered being checked, which may not always be the case when
839 * drivers go to access report values.
840 */
841 report = hid->report_enum[type].report_id_hash[id];
842 if (!report) {
843 hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
844 return NULL;
845 }
846 if (report->maxfield <= field_index) {
847 hid_err(hid, "not enough fields in %s %u\n",
848 hid_report_names[type], id);
849 return NULL;
850 }
851 if (report->field[field_index]->report_count < report_counts) {
852 hid_err(hid, "not enough values in %s %u field %u\n",
853 hid_report_names[type], id, field_index);
854 return NULL;
855 }
856 return report;
857 }
858 EXPORT_SYMBOL_GPL(hid_validate_values);
859
860 /**
861 * hid_open_report - open a driver-specific device report
862 *
863 * @device: hid device
864 *
865 * Parse a report description into a hid_device structure. Reports are
866 * enumerated, fields are attached to these reports.
867 * 0 returned on success, otherwise nonzero error value.
868 *
869 * This function (or the equivalent hid_parse() macro) should only be
870 * called from probe() in drivers, before starting the device.
871 */
872 int hid_open_report(struct hid_device *device)
873 {
874 struct hid_parser *parser;
875 struct hid_item item;
876 unsigned int size;
877 __u8 *start;
878 __u8 *buf;
879 __u8 *end;
880 int ret;
881 static int (*dispatch_type[])(struct hid_parser *parser,
882 struct hid_item *item) = {
883 hid_parser_main,
884 hid_parser_global,
885 hid_parser_local,
886 hid_parser_reserved
887 };
888
889 if (WARN_ON(device->status & HID_STAT_PARSED))
890 return -EBUSY;
891
892 start = device->dev_rdesc;
893 if (WARN_ON(!start))
894 return -ENODEV;
895 size = device->dev_rsize;
896
897 buf = kmemdup(start, size, GFP_KERNEL);
898 if (buf == NULL)
899 return -ENOMEM;
900
901 if (device->driver->report_fixup)
902 start = device->driver->report_fixup(device, buf, &size);
903 else
904 start = buf;
905
906 start = kmemdup(start, size, GFP_KERNEL);
907 kfree(buf);
908 if (start == NULL)
909 return -ENOMEM;
910
911 device->rdesc = start;
912 device->rsize = size;
913
914 parser = vzalloc(sizeof(struct hid_parser));
915 if (!parser) {
916 ret = -ENOMEM;
917 goto err;
918 }
919
920 parser->device = device;
921
922 end = start + size;
923
924 device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
925 sizeof(struct hid_collection), GFP_KERNEL);
926 if (!device->collection) {
927 ret = -ENOMEM;
928 goto err;
929 }
930 device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
931
932 ret = -EINVAL;
933 while ((start = fetch_item(start, end, &item)) != NULL) {
934
935 if (item.format != HID_ITEM_FORMAT_SHORT) {
936 hid_err(device, "unexpected long global item\n");
937 goto err;
938 }
939
940 if (dispatch_type[item.type](parser, &item)) {
941 hid_err(device, "item %u %u %u %u parsing failed\n",
942 item.format, (unsigned)item.size,
943 (unsigned)item.type, (unsigned)item.tag);
944 goto err;
945 }
946
947 if (start == end) {
948 if (parser->collection_stack_ptr) {
949 hid_err(device, "unbalanced collection at end of report description\n");
950 goto err;
951 }
952 if (parser->local.delimiter_depth) {
953 hid_err(device, "unbalanced delimiter at end of report description\n");
954 goto err;
955 }
956 vfree(parser);
957 device->status |= HID_STAT_PARSED;
958 return 0;
959 }
960 }
961
962 hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
963 err:
964 vfree(parser);
965 hid_close_report(device);
966 return ret;
967 }
968 EXPORT_SYMBOL_GPL(hid_open_report);
969
970 /*
971 * Convert a signed n-bit integer to signed 32-bit integer. Common
972 * cases are done through the compiler, the screwed things has to be
973 * done by hand.
974 */
975
976 static s32 snto32(__u32 value, unsigned n)
977 {
978 switch (n) {
979 case 8: return ((__s8)value);
980 case 16: return ((__s16)value);
981 case 32: return ((__s32)value);
982 }
983 return value & (1 << (n - 1)) ? value | (-1 << n) : value;
984 }
985
986 s32 hid_snto32(__u32 value, unsigned n)
987 {
988 return snto32(value, n);
989 }
990 EXPORT_SYMBOL_GPL(hid_snto32);
991
992 /*
993 * Convert a signed 32-bit integer to a signed n-bit integer.
994 */
995
996 static u32 s32ton(__s32 value, unsigned n)
997 {
998 s32 a = value >> (n - 1);
999 if (a && a != -1)
1000 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
1001 return value & ((1 << n) - 1);
1002 }
1003
1004 /*
1005 * Extract/implement a data field from/to a little endian report (bit array).
1006 *
1007 * Code sort-of follows HID spec:
1008 * http://www.usb.org/developers/devclass_docs/HID1_11.pdf
1009 *
1010 * While the USB HID spec allows unlimited length bit fields in "report
1011 * descriptors", most devices never use more than 16 bits.
1012 * One model of UPS is claimed to report "LINEV" as a 32-bit field.
1013 * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
1014 */
1015
1016 static __u32 extract(const struct hid_device *hid, __u8 *report,
1017 unsigned offset, unsigned n)
1018 {
1019 u64 x;
1020
1021 if (n > 32)
1022 hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
1023 n, current->comm);
1024
1025 report += offset >> 3; /* adjust byte index */
1026 offset &= 7; /* now only need bit offset into one byte */
1027 x = get_unaligned_le64(report);
1028 x = (x >> offset) & ((1ULL << n) - 1); /* extract bit field */
1029 return (u32) x;
1030 }
1031
1032 /*
1033 * "implement" : set bits in a little endian bit stream.
1034 * Same concepts as "extract" (see comments above).
1035 * The data mangled in the bit stream remains in little endian
1036 * order the whole time. It make more sense to talk about
1037 * endianness of register values by considering a register
1038 * a "cached" copy of the little endiad bit stream.
1039 */
1040 static void implement(const struct hid_device *hid, __u8 *report,
1041 unsigned offset, unsigned n, __u32 value)
1042 {
1043 u64 x;
1044 u64 m = (1ULL << n) - 1;
1045
1046 if (n > 32)
1047 hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
1048 __func__, n, current->comm);
1049
1050 if (value > m)
1051 hid_warn(hid, "%s() called with too large value %d! (%s)\n",
1052 __func__, value, current->comm);
1053 WARN_ON(value > m);
1054 value &= m;
1055
1056 report += offset >> 3;
1057 offset &= 7;
1058
1059 x = get_unaligned_le64(report);
1060 x &= ~(m << offset);
1061 x |= ((u64)value) << offset;
1062 put_unaligned_le64(x, report);
1063 }
1064
1065 /*
1066 * Search an array for a value.
1067 */
1068
1069 static int search(__s32 *array, __s32 value, unsigned n)
1070 {
1071 while (n--) {
1072 if (*array++ == value)
1073 return 0;
1074 }
1075 return -1;
1076 }
1077
1078 /**
1079 * hid_match_report - check if driver's raw_event should be called
1080 *
1081 * @hid: hid device
1082 * @report_type: type to match against
1083 *
1084 * compare hid->driver->report_table->report_type to report->type
1085 */
1086 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
1087 {
1088 const struct hid_report_id *id = hid->driver->report_table;
1089
1090 if (!id) /* NULL means all */
1091 return 1;
1092
1093 for (; id->report_type != HID_TERMINATOR; id++)
1094 if (id->report_type == HID_ANY_ID ||
1095 id->report_type == report->type)
1096 return 1;
1097 return 0;
1098 }
1099
1100 /**
1101 * hid_match_usage - check if driver's event should be called
1102 *
1103 * @hid: hid device
1104 * @usage: usage to match against
1105 *
1106 * compare hid->driver->usage_table->usage_{type,code} to
1107 * usage->usage_{type,code}
1108 */
1109 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1110 {
1111 const struct hid_usage_id *id = hid->driver->usage_table;
1112
1113 if (!id) /* NULL means all */
1114 return 1;
1115
1116 for (; id->usage_type != HID_ANY_ID - 1; id++)
1117 if ((id->usage_hid == HID_ANY_ID ||
1118 id->usage_hid == usage->hid) &&
1119 (id->usage_type == HID_ANY_ID ||
1120 id->usage_type == usage->type) &&
1121 (id->usage_code == HID_ANY_ID ||
1122 id->usage_code == usage->code))
1123 return 1;
1124 return 0;
1125 }
1126
1127 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1128 struct hid_usage *usage, __s32 value, int interrupt)
1129 {
1130 struct hid_driver *hdrv = hid->driver;
1131 int ret;
1132
1133 if (!list_empty(&hid->debug_list))
1134 hid_dump_input(hid, usage, value);
1135
1136 if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1137 ret = hdrv->event(hid, field, usage, value);
1138 if (ret != 0) {
1139 if (ret < 0)
1140 hid_err(hid, "%s's event failed with %d\n",
1141 hdrv->name, ret);
1142 return;
1143 }
1144 }
1145
1146 if (hid->claimed & HID_CLAIMED_INPUT)
1147 hidinput_hid_event(hid, field, usage, value);
1148 if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1149 hid->hiddev_hid_event(hid, field, usage, value);
1150 }
1151
1152 /*
1153 * Analyse a received field, and fetch the data from it. The field
1154 * content is stored for next report processing (we do differential
1155 * reporting to the layer).
1156 */
1157
1158 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1159 __u8 *data, int interrupt)
1160 {
1161 unsigned n;
1162 unsigned count = field->report_count;
1163 unsigned offset = field->report_offset;
1164 unsigned size = field->report_size;
1165 __s32 min = field->logical_minimum;
1166 __s32 max = field->logical_maximum;
1167 __s32 *value;
1168
1169 value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1170 if (!value)
1171 return;
1172
1173 for (n = 0; n < count; n++) {
1174
1175 value[n] = min < 0 ?
1176 snto32(extract(hid, data, offset + n * size, size),
1177 size) :
1178 extract(hid, data, offset + n * size, size);
1179
1180 /* Ignore report if ErrorRollOver */
1181 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1182 value[n] >= min && value[n] <= max &&
1183 field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1184 goto exit;
1185 }
1186
1187 for (n = 0; n < count; n++) {
1188
1189 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1190 hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1191 continue;
1192 }
1193
1194 if (field->value[n] >= min && field->value[n] <= max
1195 && field->usage[field->value[n] - min].hid
1196 && search(value, field->value[n], count))
1197 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1198
1199 if (value[n] >= min && value[n] <= max
1200 && field->usage[value[n] - min].hid
1201 && search(field->value, value[n], count))
1202 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1203 }
1204
1205 memcpy(field->value, value, count * sizeof(__s32));
1206 exit:
1207 kfree(value);
1208 }
1209
1210 /*
1211 * Output the field into the report.
1212 */
1213
1214 static void hid_output_field(const struct hid_device *hid,
1215 struct hid_field *field, __u8 *data)
1216 {
1217 unsigned count = field->report_count;
1218 unsigned offset = field->report_offset;
1219 unsigned size = field->report_size;
1220 unsigned n;
1221
1222 for (n = 0; n < count; n++) {
1223 if (field->logical_minimum < 0) /* signed values */
1224 implement(hid, data, offset + n * size, size,
1225 s32ton(field->value[n], size));
1226 else /* unsigned values */
1227 implement(hid, data, offset + n * size, size,
1228 field->value[n]);
1229 }
1230 }
1231
1232 /*
1233 * Create a report. 'data' has to be allocated using
1234 * hid_alloc_report_buf() so that it has proper size.
1235 */
1236
1237 void hid_output_report(struct hid_report *report, __u8 *data)
1238 {
1239 unsigned n;
1240
1241 if (report->id > 0)
1242 *data++ = report->id;
1243
1244 memset(data, 0, ((report->size - 1) >> 3) + 1);
1245 for (n = 0; n < report->maxfield; n++)
1246 hid_output_field(report->device, report->field[n], data);
1247 }
1248 EXPORT_SYMBOL_GPL(hid_output_report);
1249
1250 /*
1251 * Allocator for buffer that is going to be passed to hid_output_report()
1252 */
1253 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
1254 {
1255 /*
1256 * 7 extra bytes are necessary to achieve proper functionality
1257 * of implement() working on 8 byte chunks
1258 */
1259
1260 int len = ((report->size - 1) >> 3) + 1 + (report->id > 0) + 7;
1261
1262 return kmalloc(len, flags);
1263 }
1264 EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
1265
1266 /*
1267 * Set a field value. The report this field belongs to has to be
1268 * created and transferred to the device, to set this value in the
1269 * device.
1270 */
1271
1272 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1273 {
1274 unsigned size;
1275
1276 if (!field)
1277 return -1;
1278
1279 size = field->report_size;
1280
1281 hid_dump_input(field->report->device, field->usage + offset, value);
1282
1283 if (offset >= field->report_count) {
1284 hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1285 offset, field->report_count);
1286 return -1;
1287 }
1288 if (field->logical_minimum < 0) {
1289 if (value != snto32(s32ton(value, size), size)) {
1290 hid_err(field->report->device, "value %d is out of range\n", value);
1291 return -1;
1292 }
1293 }
1294 field->value[offset] = value;
1295 return 0;
1296 }
1297 EXPORT_SYMBOL_GPL(hid_set_field);
1298
1299 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1300 const u8 *data)
1301 {
1302 struct hid_report *report;
1303 unsigned int n = 0; /* Normally report number is 0 */
1304
1305 /* Device uses numbered reports, data[0] is report number */
1306 if (report_enum->numbered)
1307 n = *data;
1308
1309 report = report_enum->report_id_hash[n];
1310 if (report == NULL)
1311 dbg_hid("undefined report_id %u received\n", n);
1312
1313 return report;
1314 }
1315
1316 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1317 int interrupt)
1318 {
1319 struct hid_report_enum *report_enum = hid->report_enum + type;
1320 struct hid_report *report;
1321 struct hid_driver *hdrv;
1322 unsigned int a;
1323 int rsize, csize = size;
1324 u8 *cdata = data;
1325 int ret = 0;
1326
1327 report = hid_get_report(report_enum, data);
1328 if (!report)
1329 goto out;
1330
1331 if (report_enum->numbered) {
1332 cdata++;
1333 csize--;
1334 }
1335
1336 rsize = ((report->size - 1) >> 3) + 1;
1337
1338 if (rsize > HID_MAX_BUFFER_SIZE)
1339 rsize = HID_MAX_BUFFER_SIZE;
1340
1341 if (csize < rsize) {
1342 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1343 csize, rsize);
1344 memset(cdata + csize, 0, rsize - csize);
1345 }
1346
1347 if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1348 hid->hiddev_report_event(hid, report);
1349 if (hid->claimed & HID_CLAIMED_HIDRAW) {
1350 ret = hidraw_report_event(hid, data, size);
1351 if (ret)
1352 goto out;
1353 }
1354
1355 if (hid->claimed != HID_CLAIMED_HIDRAW && report->maxfield) {
1356 for (a = 0; a < report->maxfield; a++)
1357 hid_input_field(hid, report->field[a], cdata, interrupt);
1358 hdrv = hid->driver;
1359 if (hdrv && hdrv->report)
1360 hdrv->report(hid, report);
1361 }
1362
1363 if (hid->claimed & HID_CLAIMED_INPUT)
1364 hidinput_report_event(hid, report);
1365 out:
1366 return ret;
1367 }
1368 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1369
1370 /**
1371 * hid_input_report - report data from lower layer (usb, bt...)
1372 *
1373 * @hid: hid device
1374 * @type: HID report type (HID_*_REPORT)
1375 * @data: report contents
1376 * @size: size of data parameter
1377 * @interrupt: distinguish between interrupt and control transfers
1378 *
1379 * This is data entry for lower layers.
1380 */
1381 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1382 {
1383 struct hid_report_enum *report_enum;
1384 struct hid_driver *hdrv;
1385 struct hid_report *report;
1386 int ret = 0;
1387
1388 if (!hid)
1389 return -ENODEV;
1390
1391 if (down_trylock(&hid->driver_input_lock))
1392 return -EBUSY;
1393
1394 if (!hid->driver) {
1395 ret = -ENODEV;
1396 goto unlock;
1397 }
1398 report_enum = hid->report_enum + type;
1399 hdrv = hid->driver;
1400
1401 if (!size) {
1402 dbg_hid("empty report\n");
1403 ret = -1;
1404 goto unlock;
1405 }
1406
1407 /* Avoid unnecessary overhead if debugfs is disabled */
1408 if (!list_empty(&hid->debug_list))
1409 hid_dump_report(hid, type, data, size);
1410
1411 report = hid_get_report(report_enum, data);
1412
1413 if (!report) {
1414 ret = -1;
1415 goto unlock;
1416 }
1417
1418 if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1419 ret = hdrv->raw_event(hid, report, data, size);
1420 if (ret < 0) {
1421 ret = ret < 0 ? ret : 0;
1422 goto unlock;
1423 }
1424 }
1425
1426 ret = hid_report_raw_event(hid, type, data, size, interrupt);
1427
1428 unlock:
1429 up(&hid->driver_input_lock);
1430 return ret;
1431 }
1432 EXPORT_SYMBOL_GPL(hid_input_report);
1433
1434 static bool hid_match_one_id(struct hid_device *hdev,
1435 const struct hid_device_id *id)
1436 {
1437 return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1438 (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1439 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1440 (id->product == HID_ANY_ID || id->product == hdev->product);
1441 }
1442
1443 const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1444 const struct hid_device_id *id)
1445 {
1446 for (; id->bus; id++)
1447 if (hid_match_one_id(hdev, id))
1448 return id;
1449
1450 return NULL;
1451 }
1452
1453 static const struct hid_device_id hid_hiddev_list[] = {
1454 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1455 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1456 { }
1457 };
1458
1459 static bool hid_hiddev(struct hid_device *hdev)
1460 {
1461 return !!hid_match_id(hdev, hid_hiddev_list);
1462 }
1463
1464
1465 static ssize_t
1466 read_report_descriptor(struct file *filp, struct kobject *kobj,
1467 struct bin_attribute *attr,
1468 char *buf, loff_t off, size_t count)
1469 {
1470 struct device *dev = container_of(kobj, struct device, kobj);
1471 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1472
1473 if (off >= hdev->rsize)
1474 return 0;
1475
1476 if (off + count > hdev->rsize)
1477 count = hdev->rsize - off;
1478
1479 memcpy(buf, hdev->rdesc + off, count);
1480
1481 return count;
1482 }
1483
1484 static struct bin_attribute dev_bin_attr_report_desc = {
1485 .attr = { .name = "report_descriptor", .mode = 0444 },
1486 .read = read_report_descriptor,
1487 .size = HID_MAX_DESCRIPTOR_SIZE,
1488 };
1489
1490 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1491 {
1492 static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1493 "Joystick", "Gamepad", "Keyboard", "Keypad",
1494 "Multi-Axis Controller"
1495 };
1496 const char *type, *bus;
1497 char buf[64];
1498 unsigned int i;
1499 int len;
1500 int ret;
1501
1502 if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1503 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1504 if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1505 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1506 if (hdev->bus != BUS_USB)
1507 connect_mask &= ~HID_CONNECT_HIDDEV;
1508 if (hid_hiddev(hdev))
1509 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1510
1511 if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1512 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1513 hdev->claimed |= HID_CLAIMED_INPUT;
1514
1515 if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1516 !hdev->hiddev_connect(hdev,
1517 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1518 hdev->claimed |= HID_CLAIMED_HIDDEV;
1519 if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1520 hdev->claimed |= HID_CLAIMED_HIDRAW;
1521
1522 /* Drivers with the ->raw_event callback set are not required to connect
1523 * to any other listener. */
1524 if (!hdev->claimed && !hdev->driver->raw_event) {
1525 hid_err(hdev, "device has no listeners, quitting\n");
1526 return -ENODEV;
1527 }
1528
1529 if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1530 (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1531 hdev->ff_init(hdev);
1532
1533 len = 0;
1534 if (hdev->claimed & HID_CLAIMED_INPUT)
1535 len += sprintf(buf + len, "input");
1536 if (hdev->claimed & HID_CLAIMED_HIDDEV)
1537 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1538 hdev->minor);
1539 if (hdev->claimed & HID_CLAIMED_HIDRAW)
1540 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1541 ((struct hidraw *)hdev->hidraw)->minor);
1542
1543 type = "Device";
1544 for (i = 0; i < hdev->maxcollection; i++) {
1545 struct hid_collection *col = &hdev->collection[i];
1546 if (col->type == HID_COLLECTION_APPLICATION &&
1547 (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1548 (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1549 type = types[col->usage & 0xffff];
1550 break;
1551 }
1552 }
1553
1554 switch (hdev->bus) {
1555 case BUS_USB:
1556 bus = "USB";
1557 break;
1558 case BUS_BLUETOOTH:
1559 bus = "BLUETOOTH";
1560 break;
1561 default:
1562 bus = "<UNKNOWN>";
1563 }
1564
1565 ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1566 if (ret)
1567 hid_warn(hdev,
1568 "can't create sysfs report descriptor attribute err: %d\n", ret);
1569
1570 hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1571 buf, bus, hdev->version >> 8, hdev->version & 0xff,
1572 type, hdev->name, hdev->phys);
1573
1574 return 0;
1575 }
1576 EXPORT_SYMBOL_GPL(hid_connect);
1577
1578 void hid_disconnect(struct hid_device *hdev)
1579 {
1580 device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1581 if (hdev->claimed & HID_CLAIMED_INPUT)
1582 hidinput_disconnect(hdev);
1583 if (hdev->claimed & HID_CLAIMED_HIDDEV)
1584 hdev->hiddev_disconnect(hdev);
1585 if (hdev->claimed & HID_CLAIMED_HIDRAW)
1586 hidraw_disconnect(hdev);
1587 }
1588 EXPORT_SYMBOL_GPL(hid_disconnect);
1589
1590 /*
1591 * A list of devices for which there is a specialized driver on HID bus.
1592 *
1593 * Please note that for multitouch devices (driven by hid-multitouch driver),
1594 * there is a proper autodetection and autoloading in place (based on presence
1595 * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1596 * as we are doing the right thing in hid_scan_usage().
1597 *
1598 * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1599 * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1600 * used as a driver. See hid_scan_report().
1601 */
1602 static const struct hid_device_id hid_have_special_driver[] = {
1603 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1604 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1605 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1606 { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1607 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1608 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1609 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1610 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1611 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1612 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1613 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1614 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1615 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1616 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1617 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1618 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1619 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1620 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1621 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1622 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1623 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1624 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1625 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1626 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1627 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1628 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1629 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1630 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1631 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1632 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1633 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1634 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1635 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1636 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1637 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1638 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1639 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1640 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1641 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1642 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1643 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1644 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1645 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1646 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1647 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1648 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1649 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1650 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1651 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1652 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1653 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1654 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1655 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1656 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1657 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1658 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1659 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1660 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1661 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1662 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1663 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1664 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1665 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1666 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1667 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1668 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1669 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1670 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1671 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1672 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1673 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1674 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1675 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1676 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1677 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1678 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1679 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1680 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1681 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1682 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1683 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1684 { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1685 { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1686 { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1687 { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1688 { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1689 { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1690 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1691 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1692 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1693 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1694 { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1695 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1696 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1697 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1698 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1699 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1700 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1701 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1702 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1703 { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
1704 { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
1705 { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1706 { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1707 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1708 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1709 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1710 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1711 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1712 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1713 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1714 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1715 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1716 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
1717 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
1718 { HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_580) },
1719 { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1720 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1721 { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1722 { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1723 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
1724 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
1725 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1726 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1727 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1728 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1729 { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1730 { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1731 #if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
1732 { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1733 #endif
1734 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1735 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1736 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1737 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1738 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1739 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1740 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1741 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1742 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1743 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1744 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1745 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1746 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1747 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1748 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1749 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1750 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1751 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1752 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1753 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1754 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1755 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1756 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1757 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1758 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1759 #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1760 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1761 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1762 #endif
1763 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1764 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1765 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1766 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1767 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1768 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1769 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1770 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1771 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1772 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1773 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1774 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1775 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1776 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1777 { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1778 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1779 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1780 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1781 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1782 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1783 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1784 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1785 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1786 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1787 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1788 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1789 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1790 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1791 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1792 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1793 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1794 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1795 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1796 { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1797 { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1798 { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1799 { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1800 { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1801 #if IS_ENABLED(CONFIG_HID_ROCCAT)
1802 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1803 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1804 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1805 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1806 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
1807 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
1808 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1809 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
1810 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1811 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1812 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1813 #endif
1814 { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1815 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1816 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1817 { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1818 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
1819 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
1820 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1821 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1822 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1823 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1824 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1825 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
1826 { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
1827 { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1828 { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
1829 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1830 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1831 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1832 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1833 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1834 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1835 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1836 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1837 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1838 { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1839 { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1840 { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1841 { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1842 { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1843 { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1844 { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1845 { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1846 { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1847 { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1848 { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1849 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1850 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1851 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1852 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1853 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1854 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1855 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1856 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
1857 { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1858 { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1859 { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1860 { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1861 { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1862 { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1863 { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1864 { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1865 { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
1866 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1867 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1868 { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1869
1870 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1871 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1872 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1873 { }
1874 };
1875
1876 struct hid_dynid {
1877 struct list_head list;
1878 struct hid_device_id id;
1879 };
1880
1881 /**
1882 * store_new_id - add a new HID device ID to this driver and re-probe devices
1883 * @driver: target device driver
1884 * @buf: buffer for scanning device ID data
1885 * @count: input size
1886 *
1887 * Adds a new dynamic hid device ID to this driver,
1888 * and causes the driver to probe for all devices again.
1889 */
1890 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1891 size_t count)
1892 {
1893 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1894 struct hid_dynid *dynid;
1895 __u32 bus, vendor, product;
1896 unsigned long driver_data = 0;
1897 int ret;
1898
1899 ret = sscanf(buf, "%x %x %x %lx",
1900 &bus, &vendor, &product, &driver_data);
1901 if (ret < 3)
1902 return -EINVAL;
1903
1904 dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1905 if (!dynid)
1906 return -ENOMEM;
1907
1908 dynid->id.bus = bus;
1909 dynid->id.group = HID_GROUP_ANY;
1910 dynid->id.vendor = vendor;
1911 dynid->id.product = product;
1912 dynid->id.driver_data = driver_data;
1913
1914 spin_lock(&hdrv->dyn_lock);
1915 list_add_tail(&dynid->list, &hdrv->dyn_list);
1916 spin_unlock(&hdrv->dyn_lock);
1917
1918 ret = driver_attach(&hdrv->driver);
1919
1920 return ret ? : count;
1921 }
1922 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1923
1924 static void hid_free_dynids(struct hid_driver *hdrv)
1925 {
1926 struct hid_dynid *dynid, *n;
1927
1928 spin_lock(&hdrv->dyn_lock);
1929 list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1930 list_del(&dynid->list);
1931 kfree(dynid);
1932 }
1933 spin_unlock(&hdrv->dyn_lock);
1934 }
1935
1936 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1937 struct hid_driver *hdrv)
1938 {
1939 struct hid_dynid *dynid;
1940
1941 spin_lock(&hdrv->dyn_lock);
1942 list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1943 if (hid_match_one_id(hdev, &dynid->id)) {
1944 spin_unlock(&hdrv->dyn_lock);
1945 return &dynid->id;
1946 }
1947 }
1948 spin_unlock(&hdrv->dyn_lock);
1949
1950 return hid_match_id(hdev, hdrv->id_table);
1951 }
1952
1953 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1954 {
1955 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1956 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1957
1958 return hid_match_device(hdev, hdrv) != NULL;
1959 }
1960
1961 static int hid_device_probe(struct device *dev)
1962 {
1963 struct hid_driver *hdrv = container_of(dev->driver,
1964 struct hid_driver, driver);
1965 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1966 const struct hid_device_id *id;
1967 int ret = 0;
1968
1969 if (down_interruptible(&hdev->driver_lock))
1970 return -EINTR;
1971 if (down_interruptible(&hdev->driver_input_lock)) {
1972 ret = -EINTR;
1973 goto unlock_driver_lock;
1974 }
1975 hdev->io_started = false;
1976
1977 if (!hdev->driver) {
1978 id = hid_match_device(hdev, hdrv);
1979 if (id == NULL) {
1980 ret = -ENODEV;
1981 goto unlock;
1982 }
1983
1984 hdev->driver = hdrv;
1985 if (hdrv->probe) {
1986 ret = hdrv->probe(hdev, id);
1987 } else { /* default probe */
1988 ret = hid_open_report(hdev);
1989 if (!ret)
1990 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1991 }
1992 if (ret) {
1993 hid_close_report(hdev);
1994 hdev->driver = NULL;
1995 }
1996 }
1997 unlock:
1998 if (!hdev->io_started)
1999 up(&hdev->driver_input_lock);
2000 unlock_driver_lock:
2001 up(&hdev->driver_lock);
2002 return ret;
2003 }
2004
2005 static int hid_device_remove(struct device *dev)
2006 {
2007 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2008 struct hid_driver *hdrv;
2009 int ret = 0;
2010
2011 if (down_interruptible(&hdev->driver_lock))
2012 return -EINTR;
2013 if (down_interruptible(&hdev->driver_input_lock)) {
2014 ret = -EINTR;
2015 goto unlock_driver_lock;
2016 }
2017 hdev->io_started = false;
2018
2019 hdrv = hdev->driver;
2020 if (hdrv) {
2021 if (hdrv->remove)
2022 hdrv->remove(hdev);
2023 else /* default remove */
2024 hid_hw_stop(hdev);
2025 hid_close_report(hdev);
2026 hdev->driver = NULL;
2027 }
2028
2029 if (!hdev->io_started)
2030 up(&hdev->driver_input_lock);
2031 unlock_driver_lock:
2032 up(&hdev->driver_lock);
2033 return ret;
2034 }
2035
2036 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
2037 char *buf)
2038 {
2039 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2040 int len;
2041
2042 len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
2043 hdev->bus, hdev->group, hdev->vendor, hdev->product);
2044
2045 return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
2046 }
2047 static DEVICE_ATTR_RO(modalias);
2048
2049 static struct attribute *hid_dev_attrs[] = {
2050 &dev_attr_modalias.attr,
2051 NULL,
2052 };
2053 ATTRIBUTE_GROUPS(hid_dev);
2054
2055 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
2056 {
2057 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2058
2059 if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
2060 hdev->bus, hdev->vendor, hdev->product))
2061 return -ENOMEM;
2062
2063 if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
2064 return -ENOMEM;
2065
2066 if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
2067 return -ENOMEM;
2068
2069 if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
2070 return -ENOMEM;
2071
2072 if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
2073 hdev->bus, hdev->group, hdev->vendor, hdev->product))
2074 return -ENOMEM;
2075
2076 return 0;
2077 }
2078
2079 static struct bus_type hid_bus_type = {
2080 .name = "hid",
2081 .dev_groups = hid_dev_groups,
2082 .match = hid_bus_match,
2083 .probe = hid_device_probe,
2084 .remove = hid_device_remove,
2085 .uevent = hid_uevent,
2086 };
2087
2088 /* a list of devices that shouldn't be handled by HID core at all */
2089 static const struct hid_device_id hid_ignore_list[] = {
2090 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
2091 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
2092 { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
2093 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
2094 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
2095 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
2096 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
2097 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
2098 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
2099 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
2100 { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
2101 { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
2102 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
2103 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
2104 { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
2105 { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
2106 { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
2107 { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
2108 { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
2109 { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
2110 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
2111 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
2112 { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
2113 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
2114 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
2115 { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
2116 { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
2117 { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
2118 { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
2119 { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
2120 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
2121 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
2122 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
2123 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
2124 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
2125 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
2126 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
2127 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
2128 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
2129 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
2130 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
2131 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2132 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2133 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2134 { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2135 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2136 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2137 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2138 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2139 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2140 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2141 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2142 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2143 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2144 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2145 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2146 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2147 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2148 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2149 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2150 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2151 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2152 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2153 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2154 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2155 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2156 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2157 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2158 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2159 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2160 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2161 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2162 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2163 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2164 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2165 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2166 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2167 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2168 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2169 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2170 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2171 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2172 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2173 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2174 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2175 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2176 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2177 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2178 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2179 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2180 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2181 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2182 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2183 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2184 { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2185 { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
2186 { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
2187 { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2188 { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2189 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2190 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2191 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2192 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2193 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2194 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2195 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2196 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2197 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2198 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2199 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2200 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2201 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2202 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2203 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2204 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2205 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2206 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2207 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2208 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2209 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2210 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2211 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2212 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2213 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2214 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2215 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2216 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2217 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2218 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2219 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2220 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2221 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2222 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2223 { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2224 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2225 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2226 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2227 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2228 { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2229 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2230 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2231 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2232 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2233 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2234 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2235 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2236 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2237 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2238 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2239 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2240 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2241 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2242 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2243 { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2244 { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2245 #if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2246 { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2247 { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2248 { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2249 { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2250 { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2251 { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2252 { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2253 { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2254 #endif
2255 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2256 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2257 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2258 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2259 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2260 { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
2261 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2262 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2263 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2264 { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2265 { }
2266 };
2267
2268 /**
2269 * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2270 *
2271 * There are composite devices for which we want to ignore only a certain
2272 * interface. This is a list of devices for which only the mouse interface will
2273 * be ignored. This allows a dedicated driver to take care of the interface.
2274 */
2275 static const struct hid_device_id hid_mouse_ignore_list[] = {
2276 /* appletouch driver */
2277 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2278 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2279 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2280 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2281 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2282 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2283 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2284 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2285 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2286 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2287 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2288 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2289 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2290 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2291 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2292 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2293 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2294 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2295 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2296 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2297 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2298 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2299 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2300 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2301 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2302 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2303 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2304 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2305 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2306 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2307 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2308 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2309 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2310 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2311 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2312 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2313 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2314 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2315 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2316 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2317 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2318 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2319 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2320 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2321 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2322 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2323 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2324 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2325 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2326 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2327 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2328 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2329 { }
2330 };
2331
2332 bool hid_ignore(struct hid_device *hdev)
2333 {
2334 if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2335 return false;
2336 if (hdev->quirks & HID_QUIRK_IGNORE)
2337 return true;
2338
2339 switch (hdev->vendor) {
2340 case USB_VENDOR_ID_CODEMERCS:
2341 /* ignore all Code Mercenaries IOWarrior devices */
2342 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2343 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2344 return true;
2345 break;
2346 case USB_VENDOR_ID_LOGITECH:
2347 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2348 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2349 return true;
2350 /*
2351 * The Keene FM transmitter USB device has the same USB ID as
2352 * the Logitech AudioHub Speaker, but it should ignore the hid.
2353 * Check if the name is that of the Keene device.
2354 * For reference: the name of the AudioHub is
2355 * "HOLTEK AudioHub Speaker".
2356 */
2357 if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2358 !strcmp(hdev->name, "HOLTEK B-LINK USB Audio "))
2359 return true;
2360 break;
2361 case USB_VENDOR_ID_SOUNDGRAPH:
2362 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2363 hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2364 return true;
2365 break;
2366 case USB_VENDOR_ID_HANWANG:
2367 if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2368 hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2369 return true;
2370 break;
2371 case USB_VENDOR_ID_JESS:
2372 if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2373 hdev->type == HID_TYPE_USBNONE)
2374 return true;
2375 break;
2376 case USB_VENDOR_ID_DWAV:
2377 /* These are handled by usbtouchscreen. hdev->type is probably
2378 * HID_TYPE_USBNONE, but we say !HID_TYPE_USBMOUSE to match
2379 * usbtouchscreen. */
2380 if ((hdev->product == USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER ||
2381 hdev->product == USB_DEVICE_ID_DWAV_TOUCHCONTROLLER) &&
2382 hdev->type != HID_TYPE_USBMOUSE)
2383 return true;
2384 break;
2385 case USB_VENDOR_ID_VELLEMAN:
2386 /* These are not HID devices. They are handled by comedi. */
2387 if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2388 hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2389 (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2390 hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2391 return true;
2392 break;
2393 case USB_VENDOR_ID_ATMEL_V_USB:
2394 /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2395 * it has the same USB ID as many Atmel V-USB devices. This
2396 * usb radio is handled by radio-ma901.c driver so we want
2397 * ignore the hid. Check the name, bus, product and ignore
2398 * if we have MA901 usb radio.
2399 */
2400 if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2401 hdev->bus == BUS_USB &&
2402 strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2403 return true;
2404 break;
2405 }
2406
2407 if (hdev->type == HID_TYPE_USBMOUSE &&
2408 hid_match_id(hdev, hid_mouse_ignore_list))
2409 return true;
2410
2411 return !!hid_match_id(hdev, hid_ignore_list);
2412 }
2413 EXPORT_SYMBOL_GPL(hid_ignore);
2414
2415 int hid_add_device(struct hid_device *hdev)
2416 {
2417 static atomic_t id = ATOMIC_INIT(0);
2418 int ret;
2419
2420 if (WARN_ON(hdev->status & HID_STAT_ADDED))
2421 return -EBUSY;
2422
2423 /* we need to kill them here, otherwise they will stay allocated to
2424 * wait for coming driver */
2425 if (hid_ignore(hdev))
2426 return -ENODEV;
2427
2428 /*
2429 * Read the device report descriptor once and use as template
2430 * for the driver-specific modifications.
2431 */
2432 ret = hdev->ll_driver->parse(hdev);
2433 if (ret)
2434 return ret;
2435 if (!hdev->dev_rdesc)
2436 return -ENODEV;
2437
2438 /*
2439 * Scan generic devices for group information
2440 */
2441 if (hid_ignore_special_drivers ||
2442 !hid_match_id(hdev, hid_have_special_driver)) {
2443 ret = hid_scan_report(hdev);
2444 if (ret)
2445 hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2446 }
2447
2448 /* XXX hack, any other cleaner solution after the driver core
2449 * is converted to allow more than 20 bytes as the device name? */
2450 dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2451 hdev->vendor, hdev->product, atomic_inc_return(&id));
2452
2453 hid_debug_register(hdev, dev_name(&hdev->dev));
2454 ret = device_add(&hdev->dev);
2455 if (!ret)
2456 hdev->status |= HID_STAT_ADDED;
2457 else
2458 hid_debug_unregister(hdev);
2459
2460 return ret;
2461 }
2462 EXPORT_SYMBOL_GPL(hid_add_device);
2463
2464 /**
2465 * hid_allocate_device - allocate new hid device descriptor
2466 *
2467 * Allocate and initialize hid device, so that hid_destroy_device might be
2468 * used to free it.
2469 *
2470 * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2471 * error value.
2472 */
2473 struct hid_device *hid_allocate_device(void)
2474 {
2475 struct hid_device *hdev;
2476 int ret = -ENOMEM;
2477
2478 hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2479 if (hdev == NULL)
2480 return ERR_PTR(ret);
2481
2482 device_initialize(&hdev->dev);
2483 hdev->dev.release = hid_device_release;
2484 hdev->dev.bus = &hid_bus_type;
2485
2486 hid_close_report(hdev);
2487
2488 init_waitqueue_head(&hdev->debug_wait);
2489 INIT_LIST_HEAD(&hdev->debug_list);
2490 spin_lock_init(&hdev->debug_list_lock);
2491 sema_init(&hdev->driver_lock, 1);
2492 sema_init(&hdev->driver_input_lock, 1);
2493
2494 return hdev;
2495 }
2496 EXPORT_SYMBOL_GPL(hid_allocate_device);
2497
2498 static void hid_remove_device(struct hid_device *hdev)
2499 {
2500 if (hdev->status & HID_STAT_ADDED) {
2501 device_del(&hdev->dev);
2502 hid_debug_unregister(hdev);
2503 hdev->status &= ~HID_STAT_ADDED;
2504 }
2505 kfree(hdev->dev_rdesc);
2506 hdev->dev_rdesc = NULL;
2507 hdev->dev_rsize = 0;
2508 }
2509
2510 /**
2511 * hid_destroy_device - free previously allocated device
2512 *
2513 * @hdev: hid device
2514 *
2515 * If you allocate hid_device through hid_allocate_device, you should ever
2516 * free by this function.
2517 */
2518 void hid_destroy_device(struct hid_device *hdev)
2519 {
2520 hid_remove_device(hdev);
2521 put_device(&hdev->dev);
2522 }
2523 EXPORT_SYMBOL_GPL(hid_destroy_device);
2524
2525 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2526 const char *mod_name)
2527 {
2528 int ret;
2529
2530 hdrv->driver.name = hdrv->name;
2531 hdrv->driver.bus = &hid_bus_type;
2532 hdrv->driver.owner = owner;
2533 hdrv->driver.mod_name = mod_name;
2534
2535 INIT_LIST_HEAD(&hdrv->dyn_list);
2536 spin_lock_init(&hdrv->dyn_lock);
2537
2538 ret = driver_register(&hdrv->driver);
2539 if (ret)
2540 return ret;
2541
2542 ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2543 if (ret)
2544 driver_unregister(&hdrv->driver);
2545
2546 return ret;
2547 }
2548 EXPORT_SYMBOL_GPL(__hid_register_driver);
2549
2550 void hid_unregister_driver(struct hid_driver *hdrv)
2551 {
2552 driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2553 driver_unregister(&hdrv->driver);
2554 hid_free_dynids(hdrv);
2555 }
2556 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2557
2558 int hid_check_keys_pressed(struct hid_device *hid)
2559 {
2560 struct hid_input *hidinput;
2561 int i;
2562
2563 if (!(hid->claimed & HID_CLAIMED_INPUT))
2564 return 0;
2565
2566 list_for_each_entry(hidinput, &hid->inputs, list) {
2567 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2568 if (hidinput->input->key[i])
2569 return 1;
2570 }
2571
2572 return 0;
2573 }
2574
2575 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2576
2577 static int __init hid_init(void)
2578 {
2579 int ret;
2580
2581 if (hid_debug)
2582 pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2583 "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2584
2585 ret = bus_register(&hid_bus_type);
2586 if (ret) {
2587 pr_err("can't register hid bus\n");
2588 goto err;
2589 }
2590
2591 ret = hidraw_init();
2592 if (ret)
2593 goto err_bus;
2594
2595 hid_debug_init();
2596
2597 return 0;
2598 err_bus:
2599 bus_unregister(&hid_bus_type);
2600 err:
2601 return ret;
2602 }
2603
2604 static void __exit hid_exit(void)
2605 {
2606 hid_debug_exit();
2607 hidraw_exit();
2608 bus_unregister(&hid_bus_type);
2609 }
2610
2611 module_init(hid_init);
2612 module_exit(hid_exit);
2613
2614 MODULE_AUTHOR("Andreas Gal");
2615 MODULE_AUTHOR("Vojtech Pavlik");
2616 MODULE_AUTHOR("Jiri Kosina");
2617 MODULE_LICENSE(DRIVER_LICENSE);
2618
Linux kernel - Deliverables
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