hid-core.c revision ba391e5a5ac6697b8bcae8c0d01439cb765d9ef8
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
48int hid_debug = 0;
49module_param_named(debug, hid_debug, int, 0600);
50MODULE_PARM_DESC(debug, "toggle HID debugging messages");
51EXPORT_SYMBOL_GPL(hid_debug);
52
53static int hid_ignore_special_drivers = 0;
54module_param_named(ignore_special_drivers, hid_ignore_special_drivers, int, 0600);
55MODULE_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
61struct 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}
88EXPORT_SYMBOL_GPL(hid_register_report);
89
90/*
91 * Register a new field for this report.
92 */
93
94static 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
122static 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
171static 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
186static 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
203static 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
221static 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
296static 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
306static 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
320static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
321{
322	__s32 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		/* Many devices provide unit exponent as a two's complement
374		 * nibble due to the common misunderstanding of HID
375		 * specification 1.11, 6.2.2.7 Global Items. Attempt to handle
376		 * both this and the standard encoding. */
377		raw_value = item_sdata(item);
378		if (!(raw_value & 0xfffffff0))
379			parser->global.unit_exponent = hid_snto32(raw_value, 4);
380		else
381			parser->global.unit_exponent = raw_value;
382		return 0;
383
384	case HID_GLOBAL_ITEM_TAG_UNIT:
385		parser->global.unit = item_udata(item);
386		return 0;
387
388	case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
389		parser->global.report_size = item_udata(item);
390		if (parser->global.report_size > 128) {
391			hid_err(parser->device, "invalid report_size %d\n",
392					parser->global.report_size);
393			return -1;
394		}
395		return 0;
396
397	case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
398		parser->global.report_count = item_udata(item);
399		if (parser->global.report_count > HID_MAX_USAGES) {
400			hid_err(parser->device, "invalid report_count %d\n",
401					parser->global.report_count);
402			return -1;
403		}
404		return 0;
405
406	case HID_GLOBAL_ITEM_TAG_REPORT_ID:
407		parser->global.report_id = item_udata(item);
408		if (parser->global.report_id == 0 ||
409		    parser->global.report_id >= HID_MAX_IDS) {
410			hid_err(parser->device, "report_id %u is invalid\n",
411				parser->global.report_id);
412			return -1;
413		}
414		return 0;
415
416	default:
417		hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
418		return -1;
419	}
420}
421
422/*
423 * Process a local item.
424 */
425
426static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
427{
428	__u32 data;
429	unsigned n;
430
431	data = item_udata(item);
432
433	switch (item->tag) {
434	case HID_LOCAL_ITEM_TAG_DELIMITER:
435
436		if (data) {
437			/*
438			 * We treat items before the first delimiter
439			 * as global to all usage sets (branch 0).
440			 * In the moment we process only these global
441			 * items and the first delimiter set.
442			 */
443			if (parser->local.delimiter_depth != 0) {
444				hid_err(parser->device, "nested delimiters\n");
445				return -1;
446			}
447			parser->local.delimiter_depth++;
448			parser->local.delimiter_branch++;
449		} else {
450			if (parser->local.delimiter_depth < 1) {
451				hid_err(parser->device, "bogus close delimiter\n");
452				return -1;
453			}
454			parser->local.delimiter_depth--;
455		}
456		return 0;
457
458	case HID_LOCAL_ITEM_TAG_USAGE:
459
460		if (parser->local.delimiter_branch > 1) {
461			dbg_hid("alternative usage ignored\n");
462			return 0;
463		}
464
465		if (item->size <= 2)
466			data = (parser->global.usage_page << 16) + data;
467
468		return hid_add_usage(parser, data);
469
470	case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
471
472		if (parser->local.delimiter_branch > 1) {
473			dbg_hid("alternative usage ignored\n");
474			return 0;
475		}
476
477		if (item->size <= 2)
478			data = (parser->global.usage_page << 16) + data;
479
480		parser->local.usage_minimum = data;
481		return 0;
482
483	case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
484
485		if (parser->local.delimiter_branch > 1) {
486			dbg_hid("alternative usage ignored\n");
487			return 0;
488		}
489
490		if (item->size <= 2)
491			data = (parser->global.usage_page << 16) + data;
492
493		for (n = parser->local.usage_minimum; n <= data; n++)
494			if (hid_add_usage(parser, n)) {
495				dbg_hid("hid_add_usage failed\n");
496				return -1;
497			}
498		return 0;
499
500	default:
501
502		dbg_hid("unknown local item tag 0x%x\n", item->tag);
503		return 0;
504	}
505	return 0;
506}
507
508/*
509 * Process a main item.
510 */
511
512static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
513{
514	__u32 data;
515	int ret;
516
517	data = item_udata(item);
518
519	switch (item->tag) {
520	case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
521		ret = open_collection(parser, data & 0xff);
522		break;
523	case HID_MAIN_ITEM_TAG_END_COLLECTION:
524		ret = close_collection(parser);
525		break;
526	case HID_MAIN_ITEM_TAG_INPUT:
527		ret = hid_add_field(parser, HID_INPUT_REPORT, data);
528		break;
529	case HID_MAIN_ITEM_TAG_OUTPUT:
530		ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
531		break;
532	case HID_MAIN_ITEM_TAG_FEATURE:
533		ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
534		break;
535	default:
536		hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
537		ret = 0;
538	}
539
540	memset(&parser->local, 0, sizeof(parser->local));	/* Reset the local parser environment */
541
542	return ret;
543}
544
545/*
546 * Process a reserved item.
547 */
548
549static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
550{
551	dbg_hid("reserved item type, tag 0x%x\n", item->tag);
552	return 0;
553}
554
555/*
556 * Free a report and all registered fields. The field->usage and
557 * field->value table's are allocated behind the field, so we need
558 * only to free(field) itself.
559 */
560
561static void hid_free_report(struct hid_report *report)
562{
563	unsigned n;
564
565	for (n = 0; n < report->maxfield; n++)
566		kfree(report->field[n]);
567	kfree(report);
568}
569
570/*
571 * Close report. This function returns the device
572 * state to the point prior to hid_open_report().
573 */
574static void hid_close_report(struct hid_device *device)
575{
576	unsigned i, j;
577
578	for (i = 0; i < HID_REPORT_TYPES; i++) {
579		struct hid_report_enum *report_enum = device->report_enum + i;
580
581		for (j = 0; j < HID_MAX_IDS; j++) {
582			struct hid_report *report = report_enum->report_id_hash[j];
583			if (report)
584				hid_free_report(report);
585		}
586		memset(report_enum, 0, sizeof(*report_enum));
587		INIT_LIST_HEAD(&report_enum->report_list);
588	}
589
590	kfree(device->rdesc);
591	device->rdesc = NULL;
592	device->rsize = 0;
593
594	kfree(device->collection);
595	device->collection = NULL;
596	device->collection_size = 0;
597	device->maxcollection = 0;
598	device->maxapplication = 0;
599
600	device->status &= ~HID_STAT_PARSED;
601}
602
603/*
604 * Free a device structure, all reports, and all fields.
605 */
606
607static void hid_device_release(struct device *dev)
608{
609	struct hid_device *hid = container_of(dev, struct hid_device, dev);
610
611	hid_close_report(hid);
612	kfree(hid->dev_rdesc);
613	kfree(hid);
614}
615
616/*
617 * Fetch a report description item from the data stream. We support long
618 * items, though they are not used yet.
619 */
620
621static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
622{
623	u8 b;
624
625	if ((end - start) <= 0)
626		return NULL;
627
628	b = *start++;
629
630	item->type = (b >> 2) & 3;
631	item->tag  = (b >> 4) & 15;
632
633	if (item->tag == HID_ITEM_TAG_LONG) {
634
635		item->format = HID_ITEM_FORMAT_LONG;
636
637		if ((end - start) < 2)
638			return NULL;
639
640		item->size = *start++;
641		item->tag  = *start++;
642
643		if ((end - start) < item->size)
644			return NULL;
645
646		item->data.longdata = start;
647		start += item->size;
648		return start;
649	}
650
651	item->format = HID_ITEM_FORMAT_SHORT;
652	item->size = b & 3;
653
654	switch (item->size) {
655	case 0:
656		return start;
657
658	case 1:
659		if ((end - start) < 1)
660			return NULL;
661		item->data.u8 = *start++;
662		return start;
663
664	case 2:
665		if ((end - start) < 2)
666			return NULL;
667		item->data.u16 = get_unaligned_le16(start);
668		start = (__u8 *)((__le16 *)start + 1);
669		return start;
670
671	case 3:
672		item->size++;
673		if ((end - start) < 4)
674			return NULL;
675		item->data.u32 = get_unaligned_le32(start);
676		start = (__u8 *)((__le32 *)start + 1);
677		return start;
678	}
679
680	return NULL;
681}
682
683static void hid_scan_input_usage(struct hid_parser *parser, u32 usage)
684{
685	struct hid_device *hid = parser->device;
686
687	if (usage == HID_DG_CONTACTID)
688		hid->group = HID_GROUP_MULTITOUCH;
689}
690
691static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage)
692{
693	if (usage == 0xff0000c5 && parser->global.report_count == 256 &&
694	    parser->global.report_size == 8)
695		parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;
696}
697
698static void hid_scan_collection(struct hid_parser *parser, unsigned type)
699{
700	struct hid_device *hid = parser->device;
701
702	if (((parser->global.usage_page << 16) == HID_UP_SENSOR) &&
703	    type == HID_COLLECTION_PHYSICAL)
704		hid->group = HID_GROUP_SENSOR_HUB;
705}
706
707static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)
708{
709	__u32 data;
710	int i;
711
712	data = item_udata(item);
713
714	switch (item->tag) {
715	case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
716		hid_scan_collection(parser, data & 0xff);
717		break;
718	case HID_MAIN_ITEM_TAG_END_COLLECTION:
719		break;
720	case HID_MAIN_ITEM_TAG_INPUT:
721		for (i = 0; i < parser->local.usage_index; i++)
722			hid_scan_input_usage(parser, parser->local.usage[i]);
723		break;
724	case HID_MAIN_ITEM_TAG_OUTPUT:
725		break;
726	case HID_MAIN_ITEM_TAG_FEATURE:
727		for (i = 0; i < parser->local.usage_index; i++)
728			hid_scan_feature_usage(parser, parser->local.usage[i]);
729		break;
730	}
731
732	/* Reset the local parser environment */
733	memset(&parser->local, 0, sizeof(parser->local));
734
735	return 0;
736}
737
738/*
739 * Scan a report descriptor before the device is added to the bus.
740 * Sets device groups and other properties that determine what driver
741 * to load.
742 */
743static int hid_scan_report(struct hid_device *hid)
744{
745	struct hid_parser *parser;
746	struct hid_item item;
747	__u8 *start = hid->dev_rdesc;
748	__u8 *end = start + hid->dev_rsize;
749	static int (*dispatch_type[])(struct hid_parser *parser,
750				      struct hid_item *item) = {
751		hid_scan_main,
752		hid_parser_global,
753		hid_parser_local,
754		hid_parser_reserved
755	};
756
757	parser = vzalloc(sizeof(struct hid_parser));
758	if (!parser)
759		return -ENOMEM;
760
761	parser->device = hid;
762	hid->group = HID_GROUP_GENERIC;
763
764	/*
765	 * The parsing is simpler than the one in hid_open_report() as we should
766	 * be robust against hid errors. Those errors will be raised by
767	 * hid_open_report() anyway.
768	 */
769	while ((start = fetch_item(start, end, &item)) != NULL)
770		dispatch_type[item.type](parser, &item);
771
772	/*
773	 * Handle special flags set during scanning.
774	 */
775	if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) &&
776	    (hid->group == HID_GROUP_MULTITOUCH))
777		hid->group = HID_GROUP_MULTITOUCH_WIN_8;
778
779	/*
780	* Vendor specific handlings
781	*/
782	if ((hid->vendor == USB_VENDOR_ID_SYNAPTICS) &&
783	    (hid->group == HID_GROUP_GENERIC))
784		/* hid-rmi should take care of them, not hid-generic */
785		hid->group = HID_GROUP_RMI;
786
787	vfree(parser);
788	return 0;
789}
790
791/**
792 * hid_parse_report - parse device report
793 *
794 * @device: hid device
795 * @start: report start
796 * @size: report size
797 *
798 * Allocate the device report as read by the bus driver. This function should
799 * only be called from parse() in ll drivers.
800 */
801int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
802{
803	hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
804	if (!hid->dev_rdesc)
805		return -ENOMEM;
806	hid->dev_rsize = size;
807	return 0;
808}
809EXPORT_SYMBOL_GPL(hid_parse_report);
810
811static const char * const hid_report_names[] = {
812	"HID_INPUT_REPORT",
813	"HID_OUTPUT_REPORT",
814	"HID_FEATURE_REPORT",
815};
816/**
817 * hid_validate_values - validate existing device report's value indexes
818 *
819 * @device: hid device
820 * @type: which report type to examine
821 * @id: which report ID to examine (0 for first)
822 * @field_index: which report field to examine
823 * @report_counts: expected number of values
824 *
825 * Validate the number of values in a given field of a given report, after
826 * parsing.
827 */
828struct hid_report *hid_validate_values(struct hid_device *hid,
829				       unsigned int type, unsigned int id,
830				       unsigned int field_index,
831				       unsigned int report_counts)
832{
833	struct hid_report *report;
834
835	if (type > HID_FEATURE_REPORT) {
836		hid_err(hid, "invalid HID report type %u\n", type);
837		return NULL;
838	}
839
840	if (id >= HID_MAX_IDS) {
841		hid_err(hid, "invalid HID report id %u\n", id);
842		return NULL;
843	}
844
845	/*
846	 * Explicitly not using hid_get_report() here since it depends on
847	 * ->numbered being checked, which may not always be the case when
848	 * drivers go to access report values.
849	 */
850	report = hid->report_enum[type].report_id_hash[id];
851	if (!report) {
852		hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
853		return NULL;
854	}
855	if (report->maxfield <= field_index) {
856		hid_err(hid, "not enough fields in %s %u\n",
857			hid_report_names[type], id);
858		return NULL;
859	}
860	if (report->field[field_index]->report_count < report_counts) {
861		hid_err(hid, "not enough values in %s %u field %u\n",
862			hid_report_names[type], id, field_index);
863		return NULL;
864	}
865	return report;
866}
867EXPORT_SYMBOL_GPL(hid_validate_values);
868
869/**
870 * hid_open_report - open a driver-specific device report
871 *
872 * @device: hid device
873 *
874 * Parse a report description into a hid_device structure. Reports are
875 * enumerated, fields are attached to these reports.
876 * 0 returned on success, otherwise nonzero error value.
877 *
878 * This function (or the equivalent hid_parse() macro) should only be
879 * called from probe() in drivers, before starting the device.
880 */
881int hid_open_report(struct hid_device *device)
882{
883	struct hid_parser *parser;
884	struct hid_item item;
885	unsigned int size;
886	__u8 *start;
887	__u8 *buf;
888	__u8 *end;
889	int ret;
890	static int (*dispatch_type[])(struct hid_parser *parser,
891				      struct hid_item *item) = {
892		hid_parser_main,
893		hid_parser_global,
894		hid_parser_local,
895		hid_parser_reserved
896	};
897
898	if (WARN_ON(device->status & HID_STAT_PARSED))
899		return -EBUSY;
900
901	start = device->dev_rdesc;
902	if (WARN_ON(!start))
903		return -ENODEV;
904	size = device->dev_rsize;
905
906	buf = kmemdup(start, size, GFP_KERNEL);
907	if (buf == NULL)
908		return -ENOMEM;
909
910	if (device->driver->report_fixup)
911		start = device->driver->report_fixup(device, buf, &size);
912	else
913		start = buf;
914
915	start = kmemdup(start, size, GFP_KERNEL);
916	kfree(buf);
917	if (start == NULL)
918		return -ENOMEM;
919
920	device->rdesc = start;
921	device->rsize = size;
922
923	parser = vzalloc(sizeof(struct hid_parser));
924	if (!parser) {
925		ret = -ENOMEM;
926		goto err;
927	}
928
929	parser->device = device;
930
931	end = start + size;
932
933	device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
934				     sizeof(struct hid_collection), GFP_KERNEL);
935	if (!device->collection) {
936		ret = -ENOMEM;
937		goto err;
938	}
939	device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
940
941	ret = -EINVAL;
942	while ((start = fetch_item(start, end, &item)) != NULL) {
943
944		if (item.format != HID_ITEM_FORMAT_SHORT) {
945			hid_err(device, "unexpected long global item\n");
946			goto err;
947		}
948
949		if (dispatch_type[item.type](parser, &item)) {
950			hid_err(device, "item %u %u %u %u parsing failed\n",
951				item.format, (unsigned)item.size,
952				(unsigned)item.type, (unsigned)item.tag);
953			goto err;
954		}
955
956		if (start == end) {
957			if (parser->collection_stack_ptr) {
958				hid_err(device, "unbalanced collection at end of report description\n");
959				goto err;
960			}
961			if (parser->local.delimiter_depth) {
962				hid_err(device, "unbalanced delimiter at end of report description\n");
963				goto err;
964			}
965			vfree(parser);
966			device->status |= HID_STAT_PARSED;
967			return 0;
968		}
969	}
970
971	hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
972err:
973	vfree(parser);
974	hid_close_report(device);
975	return ret;
976}
977EXPORT_SYMBOL_GPL(hid_open_report);
978
979/*
980 * Convert a signed n-bit integer to signed 32-bit integer. Common
981 * cases are done through the compiler, the screwed things has to be
982 * done by hand.
983 */
984
985static s32 snto32(__u32 value, unsigned n)
986{
987	switch (n) {
988	case 8:  return ((__s8)value);
989	case 16: return ((__s16)value);
990	case 32: return ((__s32)value);
991	}
992	return value & (1 << (n - 1)) ? value | (-1 << n) : value;
993}
994
995s32 hid_snto32(__u32 value, unsigned n)
996{
997	return snto32(value, n);
998}
999EXPORT_SYMBOL_GPL(hid_snto32);
1000
1001/*
1002 * Convert a signed 32-bit integer to a signed n-bit integer.
1003 */
1004
1005static u32 s32ton(__s32 value, unsigned n)
1006{
1007	s32 a = value >> (n - 1);
1008	if (a && a != -1)
1009		return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
1010	return value & ((1 << n) - 1);
1011}
1012
1013/*
1014 * Extract/implement a data field from/to a little endian report (bit array).
1015 *
1016 * Code sort-of follows HID spec:
1017 *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
1018 *
1019 * While the USB HID spec allows unlimited length bit fields in "report
1020 * descriptors", most devices never use more than 16 bits.
1021 * One model of UPS is claimed to report "LINEV" as a 32-bit field.
1022 * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
1023 */
1024
1025static __u32 extract(const struct hid_device *hid, __u8 *report,
1026		     unsigned offset, unsigned n)
1027{
1028	u64 x;
1029
1030	if (n > 32)
1031		hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
1032			 n, current->comm);
1033
1034	report += offset >> 3;  /* adjust byte index */
1035	offset &= 7;            /* now only need bit offset into one byte */
1036	x = get_unaligned_le64(report);
1037	x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
1038	return (u32) x;
1039}
1040
1041/*
1042 * "implement" : set bits in a little endian bit stream.
1043 * Same concepts as "extract" (see comments above).
1044 * The data mangled in the bit stream remains in little endian
1045 * order the whole time. It make more sense to talk about
1046 * endianness of register values by considering a register
1047 * a "cached" copy of the little endiad bit stream.
1048 */
1049static void implement(const struct hid_device *hid, __u8 *report,
1050		      unsigned offset, unsigned n, __u32 value)
1051{
1052	u64 x;
1053	u64 m = (1ULL << n) - 1;
1054
1055	if (n > 32)
1056		hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
1057			 __func__, n, current->comm);
1058
1059	if (value > m)
1060		hid_warn(hid, "%s() called with too large value %d! (%s)\n",
1061			 __func__, value, current->comm);
1062	WARN_ON(value > m);
1063	value &= m;
1064
1065	report += offset >> 3;
1066	offset &= 7;
1067
1068	x = get_unaligned_le64(report);
1069	x &= ~(m << offset);
1070	x |= ((u64)value) << offset;
1071	put_unaligned_le64(x, report);
1072}
1073
1074/*
1075 * Search an array for a value.
1076 */
1077
1078static int search(__s32 *array, __s32 value, unsigned n)
1079{
1080	while (n--) {
1081		if (*array++ == value)
1082			return 0;
1083	}
1084	return -1;
1085}
1086
1087/**
1088 * hid_match_report - check if driver's raw_event should be called
1089 *
1090 * @hid: hid device
1091 * @report_type: type to match against
1092 *
1093 * compare hid->driver->report_table->report_type to report->type
1094 */
1095static int hid_match_report(struct hid_device *hid, struct hid_report *report)
1096{
1097	const struct hid_report_id *id = hid->driver->report_table;
1098
1099	if (!id) /* NULL means all */
1100		return 1;
1101
1102	for (; id->report_type != HID_TERMINATOR; id++)
1103		if (id->report_type == HID_ANY_ID ||
1104				id->report_type == report->type)
1105			return 1;
1106	return 0;
1107}
1108
1109/**
1110 * hid_match_usage - check if driver's event should be called
1111 *
1112 * @hid: hid device
1113 * @usage: usage to match against
1114 *
1115 * compare hid->driver->usage_table->usage_{type,code} to
1116 * usage->usage_{type,code}
1117 */
1118static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1119{
1120	const struct hid_usage_id *id = hid->driver->usage_table;
1121
1122	if (!id) /* NULL means all */
1123		return 1;
1124
1125	for (; id->usage_type != HID_ANY_ID - 1; id++)
1126		if ((id->usage_hid == HID_ANY_ID ||
1127				id->usage_hid == usage->hid) &&
1128				(id->usage_type == HID_ANY_ID ||
1129				id->usage_type == usage->type) &&
1130				(id->usage_code == HID_ANY_ID ||
1131				 id->usage_code == usage->code))
1132			return 1;
1133	return 0;
1134}
1135
1136static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1137		struct hid_usage *usage, __s32 value, int interrupt)
1138{
1139	struct hid_driver *hdrv = hid->driver;
1140	int ret;
1141
1142	if (!list_empty(&hid->debug_list))
1143		hid_dump_input(hid, usage, value);
1144
1145	if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1146		ret = hdrv->event(hid, field, usage, value);
1147		if (ret != 0) {
1148			if (ret < 0)
1149				hid_err(hid, "%s's event failed with %d\n",
1150						hdrv->name, ret);
1151			return;
1152		}
1153	}
1154
1155	if (hid->claimed & HID_CLAIMED_INPUT)
1156		hidinput_hid_event(hid, field, usage, value);
1157	if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1158		hid->hiddev_hid_event(hid, field, usage, value);
1159}
1160
1161/*
1162 * Analyse a received field, and fetch the data from it. The field
1163 * content is stored for next report processing (we do differential
1164 * reporting to the layer).
1165 */
1166
1167static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1168			    __u8 *data, int interrupt)
1169{
1170	unsigned n;
1171	unsigned count = field->report_count;
1172	unsigned offset = field->report_offset;
1173	unsigned size = field->report_size;
1174	__s32 min = field->logical_minimum;
1175	__s32 max = field->logical_maximum;
1176	__s32 *value;
1177
1178	value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1179	if (!value)
1180		return;
1181
1182	for (n = 0; n < count; n++) {
1183
1184		value[n] = min < 0 ?
1185			snto32(extract(hid, data, offset + n * size, size),
1186			       size) :
1187			extract(hid, data, offset + n * size, size);
1188
1189		/* Ignore report if ErrorRollOver */
1190		if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1191		    value[n] >= min && value[n] <= max &&
1192		    field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1193			goto exit;
1194	}
1195
1196	for (n = 0; n < count; n++) {
1197
1198		if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1199			hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1200			continue;
1201		}
1202
1203		if (field->value[n] >= min && field->value[n] <= max
1204			&& field->usage[field->value[n] - min].hid
1205			&& search(value, field->value[n], count))
1206				hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1207
1208		if (value[n] >= min && value[n] <= max
1209			&& field->usage[value[n] - min].hid
1210			&& search(field->value, value[n], count))
1211				hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1212	}
1213
1214	memcpy(field->value, value, count * sizeof(__s32));
1215exit:
1216	kfree(value);
1217}
1218
1219/*
1220 * Output the field into the report.
1221 */
1222
1223static void hid_output_field(const struct hid_device *hid,
1224			     struct hid_field *field, __u8 *data)
1225{
1226	unsigned count = field->report_count;
1227	unsigned offset = field->report_offset;
1228	unsigned size = field->report_size;
1229	unsigned n;
1230
1231	for (n = 0; n < count; n++) {
1232		if (field->logical_minimum < 0)	/* signed values */
1233			implement(hid, data, offset + n * size, size,
1234				  s32ton(field->value[n], size));
1235		else				/* unsigned values */
1236			implement(hid, data, offset + n * size, size,
1237				  field->value[n]);
1238	}
1239}
1240
1241/*
1242 * Create a report. 'data' has to be allocated using
1243 * hid_alloc_report_buf() so that it has proper size.
1244 */
1245
1246void hid_output_report(struct hid_report *report, __u8 *data)
1247{
1248	unsigned n;
1249
1250	if (report->id > 0)
1251		*data++ = report->id;
1252
1253	memset(data, 0, ((report->size - 1) >> 3) + 1);
1254	for (n = 0; n < report->maxfield; n++)
1255		hid_output_field(report->device, report->field[n], data);
1256}
1257EXPORT_SYMBOL_GPL(hid_output_report);
1258
1259static int hid_report_len(struct hid_report *report)
1260{
1261	return ((report->size - 1) >> 3) + 1 + (report->id > 0) + 7;
1262}
1263
1264/*
1265 * Allocator for buffer that is going to be passed to hid_output_report()
1266 */
1267u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
1268{
1269	/*
1270	 * 7 extra bytes are necessary to achieve proper functionality
1271	 * of implement() working on 8 byte chunks
1272	 */
1273
1274	int len = hid_report_len(report);
1275
1276	return kmalloc(len, flags);
1277}
1278EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
1279
1280/*
1281 * Set a field value. The report this field belongs to has to be
1282 * created and transferred to the device, to set this value in the
1283 * device.
1284 */
1285
1286int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1287{
1288	unsigned size;
1289
1290	if (!field)
1291		return -1;
1292
1293	size = field->report_size;
1294
1295	hid_dump_input(field->report->device, field->usage + offset, value);
1296
1297	if (offset >= field->report_count) {
1298		hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1299				offset, field->report_count);
1300		return -1;
1301	}
1302	if (field->logical_minimum < 0) {
1303		if (value != snto32(s32ton(value, size), size)) {
1304			hid_err(field->report->device, "value %d is out of range\n", value);
1305			return -1;
1306		}
1307	}
1308	field->value[offset] = value;
1309	return 0;
1310}
1311EXPORT_SYMBOL_GPL(hid_set_field);
1312
1313static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1314		const u8 *data)
1315{
1316	struct hid_report *report;
1317	unsigned int n = 0;	/* Normally report number is 0 */
1318
1319	/* Device uses numbered reports, data[0] is report number */
1320	if (report_enum->numbered)
1321		n = *data;
1322
1323	report = report_enum->report_id_hash[n];
1324	if (report == NULL)
1325		dbg_hid("undefined report_id %u received\n", n);
1326
1327	return report;
1328}
1329
1330/*
1331 * Implement a generic .request() callback, using .raw_request()
1332 * DO NOT USE in hid drivers directly, but through hid_hw_request instead.
1333 */
1334void __hid_request(struct hid_device *hid, struct hid_report *report,
1335		int reqtype)
1336{
1337	char *buf;
1338	int ret;
1339	int len;
1340
1341	buf = hid_alloc_report_buf(report, GFP_KERNEL);
1342	if (!buf)
1343		return;
1344
1345	len = hid_report_len(report);
1346
1347	if (reqtype == HID_REQ_SET_REPORT)
1348		hid_output_report(report, buf);
1349
1350	ret = hid->ll_driver->raw_request(hid, report->id, buf, len,
1351					  report->type, reqtype);
1352	if (ret < 0) {
1353		dbg_hid("unable to complete request: %d\n", ret);
1354		goto out;
1355	}
1356
1357	if (reqtype == HID_REQ_GET_REPORT)
1358		hid_input_report(hid, report->type, buf, ret, 0);
1359
1360out:
1361	kfree(buf);
1362}
1363EXPORT_SYMBOL_GPL(__hid_request);
1364
1365int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1366		int interrupt)
1367{
1368	struct hid_report_enum *report_enum = hid->report_enum + type;
1369	struct hid_report *report;
1370	struct hid_driver *hdrv;
1371	unsigned int a;
1372	int rsize, csize = size;
1373	u8 *cdata = data;
1374	int ret = 0;
1375
1376	report = hid_get_report(report_enum, data);
1377	if (!report)
1378		goto out;
1379
1380	if (report_enum->numbered) {
1381		cdata++;
1382		csize--;
1383	}
1384
1385	rsize = ((report->size - 1) >> 3) + 1;
1386
1387	if (rsize > HID_MAX_BUFFER_SIZE)
1388		rsize = HID_MAX_BUFFER_SIZE;
1389
1390	if (csize < rsize) {
1391		dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1392				csize, rsize);
1393		memset(cdata + csize, 0, rsize - csize);
1394	}
1395
1396	if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1397		hid->hiddev_report_event(hid, report);
1398	if (hid->claimed & HID_CLAIMED_HIDRAW) {
1399		ret = hidraw_report_event(hid, data, size);
1400		if (ret)
1401			goto out;
1402	}
1403
1404	if (hid->claimed != HID_CLAIMED_HIDRAW && report->maxfield) {
1405		for (a = 0; a < report->maxfield; a++)
1406			hid_input_field(hid, report->field[a], cdata, interrupt);
1407		hdrv = hid->driver;
1408		if (hdrv && hdrv->report)
1409			hdrv->report(hid, report);
1410	}
1411
1412	if (hid->claimed & HID_CLAIMED_INPUT)
1413		hidinput_report_event(hid, report);
1414out:
1415	return ret;
1416}
1417EXPORT_SYMBOL_GPL(hid_report_raw_event);
1418
1419/**
1420 * hid_input_report - report data from lower layer (usb, bt...)
1421 *
1422 * @hid: hid device
1423 * @type: HID report type (HID_*_REPORT)
1424 * @data: report contents
1425 * @size: size of data parameter
1426 * @interrupt: distinguish between interrupt and control transfers
1427 *
1428 * This is data entry for lower layers.
1429 */
1430int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1431{
1432	struct hid_report_enum *report_enum;
1433	struct hid_driver *hdrv;
1434	struct hid_report *report;
1435	int ret = 0;
1436
1437	if (!hid)
1438		return -ENODEV;
1439
1440	if (down_trylock(&hid->driver_input_lock))
1441		return -EBUSY;
1442
1443	if (!hid->driver) {
1444		ret = -ENODEV;
1445		goto unlock;
1446	}
1447	report_enum = hid->report_enum + type;
1448	hdrv = hid->driver;
1449
1450	if (!size) {
1451		dbg_hid("empty report\n");
1452		ret = -1;
1453		goto unlock;
1454	}
1455
1456	/* Avoid unnecessary overhead if debugfs is disabled */
1457	if (!list_empty(&hid->debug_list))
1458		hid_dump_report(hid, type, data, size);
1459
1460	report = hid_get_report(report_enum, data);
1461
1462	if (!report) {
1463		ret = -1;
1464		goto unlock;
1465	}
1466
1467	if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1468		ret = hdrv->raw_event(hid, report, data, size);
1469		if (ret < 0)
1470			goto unlock;
1471	}
1472
1473	ret = hid_report_raw_event(hid, type, data, size, interrupt);
1474
1475unlock:
1476	up(&hid->driver_input_lock);
1477	return ret;
1478}
1479EXPORT_SYMBOL_GPL(hid_input_report);
1480
1481static bool hid_match_one_id(struct hid_device *hdev,
1482		const struct hid_device_id *id)
1483{
1484	return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1485		(id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1486		(id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1487		(id->product == HID_ANY_ID || id->product == hdev->product);
1488}
1489
1490const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1491		const struct hid_device_id *id)
1492{
1493	for (; id->bus; id++)
1494		if (hid_match_one_id(hdev, id))
1495			return id;
1496
1497	return NULL;
1498}
1499
1500static const struct hid_device_id hid_hiddev_list[] = {
1501	{ HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1502	{ HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1503	{ }
1504};
1505
1506static bool hid_hiddev(struct hid_device *hdev)
1507{
1508	return !!hid_match_id(hdev, hid_hiddev_list);
1509}
1510
1511
1512static ssize_t
1513read_report_descriptor(struct file *filp, struct kobject *kobj,
1514		struct bin_attribute *attr,
1515		char *buf, loff_t off, size_t count)
1516{
1517	struct device *dev = container_of(kobj, struct device, kobj);
1518	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1519
1520	if (off >= hdev->rsize)
1521		return 0;
1522
1523	if (off + count > hdev->rsize)
1524		count = hdev->rsize - off;
1525
1526	memcpy(buf, hdev->rdesc + off, count);
1527
1528	return count;
1529}
1530
1531static struct bin_attribute dev_bin_attr_report_desc = {
1532	.attr = { .name = "report_descriptor", .mode = 0444 },
1533	.read = read_report_descriptor,
1534	.size = HID_MAX_DESCRIPTOR_SIZE,
1535};
1536
1537int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1538{
1539	static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1540		"Joystick", "Gamepad", "Keyboard", "Keypad",
1541		"Multi-Axis Controller"
1542	};
1543	const char *type, *bus;
1544	char buf[64];
1545	unsigned int i;
1546	int len;
1547	int ret;
1548
1549	if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1550		connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1551	if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1552		connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1553	if (hdev->bus != BUS_USB)
1554		connect_mask &= ~HID_CONNECT_HIDDEV;
1555	if (hid_hiddev(hdev))
1556		connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1557
1558	if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1559				connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1560		hdev->claimed |= HID_CLAIMED_INPUT;
1561
1562	if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1563			!hdev->hiddev_connect(hdev,
1564				connect_mask & HID_CONNECT_HIDDEV_FORCE))
1565		hdev->claimed |= HID_CLAIMED_HIDDEV;
1566	if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1567		hdev->claimed |= HID_CLAIMED_HIDRAW;
1568
1569	/* Drivers with the ->raw_event callback set are not required to connect
1570	 * to any other listener. */
1571	if (!hdev->claimed && !hdev->driver->raw_event) {
1572		hid_err(hdev, "device has no listeners, quitting\n");
1573		return -ENODEV;
1574	}
1575
1576	if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1577			(connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1578		hdev->ff_init(hdev);
1579
1580	len = 0;
1581	if (hdev->claimed & HID_CLAIMED_INPUT)
1582		len += sprintf(buf + len, "input");
1583	if (hdev->claimed & HID_CLAIMED_HIDDEV)
1584		len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1585				hdev->minor);
1586	if (hdev->claimed & HID_CLAIMED_HIDRAW)
1587		len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1588				((struct hidraw *)hdev->hidraw)->minor);
1589
1590	type = "Device";
1591	for (i = 0; i < hdev->maxcollection; i++) {
1592		struct hid_collection *col = &hdev->collection[i];
1593		if (col->type == HID_COLLECTION_APPLICATION &&
1594		   (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1595		   (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1596			type = types[col->usage & 0xffff];
1597			break;
1598		}
1599	}
1600
1601	switch (hdev->bus) {
1602	case BUS_USB:
1603		bus = "USB";
1604		break;
1605	case BUS_BLUETOOTH:
1606		bus = "BLUETOOTH";
1607		break;
1608	default:
1609		bus = "<UNKNOWN>";
1610	}
1611
1612	ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1613	if (ret)
1614		hid_warn(hdev,
1615			 "can't create sysfs report descriptor attribute err: %d\n", ret);
1616
1617	hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1618		 buf, bus, hdev->version >> 8, hdev->version & 0xff,
1619		 type, hdev->name, hdev->phys);
1620
1621	return 0;
1622}
1623EXPORT_SYMBOL_GPL(hid_connect);
1624
1625void hid_disconnect(struct hid_device *hdev)
1626{
1627	device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1628	if (hdev->claimed & HID_CLAIMED_INPUT)
1629		hidinput_disconnect(hdev);
1630	if (hdev->claimed & HID_CLAIMED_HIDDEV)
1631		hdev->hiddev_disconnect(hdev);
1632	if (hdev->claimed & HID_CLAIMED_HIDRAW)
1633		hidraw_disconnect(hdev);
1634}
1635EXPORT_SYMBOL_GPL(hid_disconnect);
1636
1637/*
1638 * A list of devices for which there is a specialized driver on HID bus.
1639 *
1640 * Please note that for multitouch devices (driven by hid-multitouch driver),
1641 * there is a proper autodetection and autoloading in place (based on presence
1642 * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1643 * as we are doing the right thing in hid_scan_usage().
1644 *
1645 * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1646 * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1647 * used as a driver. See hid_scan_report().
1648 */
1649static const struct hid_device_id hid_have_special_driver[] = {
1650	{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1651	{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1652	{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1653	{ HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1654	{ HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0xf705) },
1655	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1656	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1657	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1658	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1659	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1660	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1661	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1662	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1663	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1664	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1665	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1666	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1667	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1668	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1669	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1670	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1671	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1672	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1673	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1674	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1675	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1676	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1677	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1678	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1679	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1680	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1681	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1682	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1683	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1684	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1685	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1686	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1687	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1688	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1689	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1690	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1691	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1692	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1693	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1694	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1695	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1696	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1697	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1698	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1699	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1700	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1701	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1702	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1703	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1704	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1705	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1706	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1707	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1708	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1709	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1710	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1711	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1712	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1713	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1714	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1715	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1716	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1717	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1718	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1719	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1720	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1721	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1722	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1723	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1724	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1725	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1726	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1727	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1728	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1729	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1730	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_JIS) },
1731	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1732	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1733	{ HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1734	{ HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1735	{ HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1736	{ HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1737	{ HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1738	{ HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1739	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1740	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1741	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1742	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1743	{ HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1744	{ HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_CP2112) },
1745	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1746	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1747	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1748	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1749	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1750	{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1751	{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1752	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1753	{ HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
1754	{ HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
1755	{ HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1756	{ HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1757	{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1758	{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1759	{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1760	{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1761	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1762	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1763	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1764	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1765	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1766	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
1767	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
1768	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
1769	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
1770	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
1771	{ HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_580) },
1772	{ HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1773	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1774	{ HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1775	{ HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1776	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
1777	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_MANTICORE) },
1778	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
1779	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1780	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1781	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1782	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1783	{ HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1784	{ HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1785#if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
1786	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1787#endif
1788	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1789	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1790	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1791	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1792	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1793	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1794	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1795	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1796	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1797	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1798	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1799	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1800	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1801	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1802	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1803	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1804	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1805	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1806	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1807	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1808	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1809	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_VIBRATION_WHEEL) },
1810	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1811	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1812	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1813	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1814#if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1815	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1816	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1817#endif
1818	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1819	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1820	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1821	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1822	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1823	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1824	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1825	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1826	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1827	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1828	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1829	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1830	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1831	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1832	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_2) },
1833	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TOUCH_COVER_2) },
1834	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_OFFICE_KB) },
1835	{ HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1836	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1837	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1838	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1839	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1840	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1841	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1842	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1843	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1844	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1845	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1846	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1847	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1848	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1849	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1850	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1851	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1852	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1853	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1854	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1855	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1856	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1857	{ HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1858	{ HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1859#if IS_ENABLED(CONFIG_HID_ROCCAT)
1860	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1861	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1862	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKUFX) },
1863	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1864	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1865	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
1866	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
1867	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEXTD) },
1868	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1869	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
1870	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1871	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1872	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK) },
1873	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_GLOW) },
1874	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_PRO) },
1875	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1876#endif
1877	{ HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1878	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1879	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1880	{ HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1881	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
1882	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
1883	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1884	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1885	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1886	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1887	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
1888	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
1889	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1890	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
1891	{ HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
1892	{ HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1893	{ HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
1894	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1895	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1896	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1897	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1898	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1899	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1900	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1901	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1902	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1903	{ HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1904	{ HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1905	{ HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1906	{ HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1907	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1908	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1909	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1910	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1911	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1912	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1913	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1914	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1915	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1916	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1917	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1918	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1919	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1920	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1921	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
1922	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1923	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1924	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1925	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1926	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1927	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1928	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1929	{ HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1930	{ HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
1931	{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1932	{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1933	{ HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1934
1935	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1936	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1937	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1938	{ }
1939};
1940
1941struct hid_dynid {
1942	struct list_head list;
1943	struct hid_device_id id;
1944};
1945
1946/**
1947 * store_new_id - add a new HID device ID to this driver and re-probe devices
1948 * @driver: target device driver
1949 * @buf: buffer for scanning device ID data
1950 * @count: input size
1951 *
1952 * Adds a new dynamic hid device ID to this driver,
1953 * and causes the driver to probe for all devices again.
1954 */
1955static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1956		size_t count)
1957{
1958	struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1959	struct hid_dynid *dynid;
1960	__u32 bus, vendor, product;
1961	unsigned long driver_data = 0;
1962	int ret;
1963
1964	ret = sscanf(buf, "%x %x %x %lx",
1965			&bus, &vendor, &product, &driver_data);
1966	if (ret < 3)
1967		return -EINVAL;
1968
1969	dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1970	if (!dynid)
1971		return -ENOMEM;
1972
1973	dynid->id.bus = bus;
1974	dynid->id.group = HID_GROUP_ANY;
1975	dynid->id.vendor = vendor;
1976	dynid->id.product = product;
1977	dynid->id.driver_data = driver_data;
1978
1979	spin_lock(&hdrv->dyn_lock);
1980	list_add_tail(&dynid->list, &hdrv->dyn_list);
1981	spin_unlock(&hdrv->dyn_lock);
1982
1983	ret = driver_attach(&hdrv->driver);
1984
1985	return ret ? : count;
1986}
1987static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1988
1989static void hid_free_dynids(struct hid_driver *hdrv)
1990{
1991	struct hid_dynid *dynid, *n;
1992
1993	spin_lock(&hdrv->dyn_lock);
1994	list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1995		list_del(&dynid->list);
1996		kfree(dynid);
1997	}
1998	spin_unlock(&hdrv->dyn_lock);
1999}
2000
2001static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
2002		struct hid_driver *hdrv)
2003{
2004	struct hid_dynid *dynid;
2005
2006	spin_lock(&hdrv->dyn_lock);
2007	list_for_each_entry(dynid, &hdrv->dyn_list, list) {
2008		if (hid_match_one_id(hdev, &dynid->id)) {
2009			spin_unlock(&hdrv->dyn_lock);
2010			return &dynid->id;
2011		}
2012	}
2013	spin_unlock(&hdrv->dyn_lock);
2014
2015	return hid_match_id(hdev, hdrv->id_table);
2016}
2017
2018static int hid_bus_match(struct device *dev, struct device_driver *drv)
2019{
2020	struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
2021	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2022
2023	return hid_match_device(hdev, hdrv) != NULL;
2024}
2025
2026static int hid_device_probe(struct device *dev)
2027{
2028	struct hid_driver *hdrv = container_of(dev->driver,
2029			struct hid_driver, driver);
2030	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2031	const struct hid_device_id *id;
2032	int ret = 0;
2033
2034	if (down_interruptible(&hdev->driver_lock))
2035		return -EINTR;
2036	if (down_interruptible(&hdev->driver_input_lock)) {
2037		ret = -EINTR;
2038		goto unlock_driver_lock;
2039	}
2040	hdev->io_started = false;
2041
2042	if (!hdev->driver) {
2043		id = hid_match_device(hdev, hdrv);
2044		if (id == NULL) {
2045			ret = -ENODEV;
2046			goto unlock;
2047		}
2048
2049		hdev->driver = hdrv;
2050		if (hdrv->probe) {
2051			ret = hdrv->probe(hdev, id);
2052		} else { /* default probe */
2053			ret = hid_open_report(hdev);
2054			if (!ret)
2055				ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
2056		}
2057		if (ret) {
2058			hid_close_report(hdev);
2059			hdev->driver = NULL;
2060		}
2061	}
2062unlock:
2063	if (!hdev->io_started)
2064		up(&hdev->driver_input_lock);
2065unlock_driver_lock:
2066	up(&hdev->driver_lock);
2067	return ret;
2068}
2069
2070static int hid_device_remove(struct device *dev)
2071{
2072	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2073	struct hid_driver *hdrv;
2074	int ret = 0;
2075
2076	if (down_interruptible(&hdev->driver_lock))
2077		return -EINTR;
2078	if (down_interruptible(&hdev->driver_input_lock)) {
2079		ret = -EINTR;
2080		goto unlock_driver_lock;
2081	}
2082	hdev->io_started = false;
2083
2084	hdrv = hdev->driver;
2085	if (hdrv) {
2086		if (hdrv->remove)
2087			hdrv->remove(hdev);
2088		else /* default remove */
2089			hid_hw_stop(hdev);
2090		hid_close_report(hdev);
2091		hdev->driver = NULL;
2092	}
2093
2094	if (!hdev->io_started)
2095		up(&hdev->driver_input_lock);
2096unlock_driver_lock:
2097	up(&hdev->driver_lock);
2098	return ret;
2099}
2100
2101static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
2102			     char *buf)
2103{
2104	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2105	int len;
2106
2107	len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
2108		       hdev->bus, hdev->group, hdev->vendor, hdev->product);
2109
2110	return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
2111}
2112static DEVICE_ATTR_RO(modalias);
2113
2114static struct attribute *hid_dev_attrs[] = {
2115	&dev_attr_modalias.attr,
2116	NULL,
2117};
2118ATTRIBUTE_GROUPS(hid_dev);
2119
2120static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
2121{
2122	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2123
2124	if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
2125			hdev->bus, hdev->vendor, hdev->product))
2126		return -ENOMEM;
2127
2128	if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
2129		return -ENOMEM;
2130
2131	if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
2132		return -ENOMEM;
2133
2134	if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
2135		return -ENOMEM;
2136
2137	if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
2138			   hdev->bus, hdev->group, hdev->vendor, hdev->product))
2139		return -ENOMEM;
2140
2141	return 0;
2142}
2143
2144static struct bus_type hid_bus_type = {
2145	.name		= "hid",
2146	.dev_groups	= hid_dev_groups,
2147	.match		= hid_bus_match,
2148	.probe		= hid_device_probe,
2149	.remove		= hid_device_remove,
2150	.uevent		= hid_uevent,
2151};
2152
2153/* a list of devices that shouldn't be handled by HID core at all */
2154static const struct hid_device_id hid_ignore_list[] = {
2155	{ HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
2156	{ HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
2157	{ HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
2158	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
2159	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
2160	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
2161	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
2162	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
2163	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
2164	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
2165	{ HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
2166	{ HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
2167	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
2168	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
2169	{ HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
2170	{ HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
2171	{ HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
2172	{ HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
2173	{ HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
2174	{ HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI4713) },
2175	{ HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
2176	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
2177	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
2178	{ HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
2179	{ HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
2180	{ HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
2181	{ HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
2182	{ HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
2183	{ HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
2184	{ HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
2185	{ HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
2186	{ HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
2187	{ HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
2188	{ HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
2189	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
2190	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
2191	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
2192	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
2193	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
2194	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
2195	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
2196	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
2197	{ HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2198	{ HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2199	{ HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2200	{ HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2201	{ HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2202	{ HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2203	{ HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2204	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2205	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2206	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2207	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2208	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2209	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2210	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2211	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2212	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2213	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2214	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2215	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2216	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2217	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2218	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2219	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2220	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2221	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2222	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2223	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2224	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2225	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2226	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2227	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2228	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2229	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2230	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2231	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2232	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2233	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2234	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2235	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2236	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2237	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2238	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2239	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2240	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2241	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2242	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2243	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2244	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2245	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2246	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2247	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2248	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2249	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2250	{ HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2251	{ HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
2252	{ HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
2253	{ HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2254	{ HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2255	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2256	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2257	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2258	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2259	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2260	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2261	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2262	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2263	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2264	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2265	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2266	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2267	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2268	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2269	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2270	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2271	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2272	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2273	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2274	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2275	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2276	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2277	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2278	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2279	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2280	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2281	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2282	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2283	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2284	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2285	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2286	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2287	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2288	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2289	{ HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2290	{ HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2291	{ HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2292	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2293	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2294	{ HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2295	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2296	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2297	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2298	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2299	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2300	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2301	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2302	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2303	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2304	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2305	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2306	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2307	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2308	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2309	{ HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2310	{ HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2311#if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2312	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2313	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2314	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2315	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2316	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2317	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2318	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2319	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2320#endif
2321	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2322	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2323	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2324	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2325	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2326	{ HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
2327	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2328	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2329	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2330	{ HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2331	{ HID_USB_DEVICE(USB_VENDOR_ID_RISO_KAGAKU, USB_DEVICE_ID_RI_KA_WEBMAIL) },
2332	{ }
2333};
2334
2335/**
2336 * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2337 *
2338 * There are composite devices for which we want to ignore only a certain
2339 * interface. This is a list of devices for which only the mouse interface will
2340 * be ignored. This allows a dedicated driver to take care of the interface.
2341 */
2342static const struct hid_device_id hid_mouse_ignore_list[] = {
2343	/* appletouch driver */
2344	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2345	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2346	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2347	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2348	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2349	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2350	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2351	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2352	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2353	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2354	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2355	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2356	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2357	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2358	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2359	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2360	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2361	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2362	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2363	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2364	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2365	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2366	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2367	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2368	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2369	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2370	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2371	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2372	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2373	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2374	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2375	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2376	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2377	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2378	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2379	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2380	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2381	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2382	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2383	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2384	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2385	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2386	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2387	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2388	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2389	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2390	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2391	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2392	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2393	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2394	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2395	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2396	{ }
2397};
2398
2399bool hid_ignore(struct hid_device *hdev)
2400{
2401	if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2402		return false;
2403	if (hdev->quirks & HID_QUIRK_IGNORE)
2404		return true;
2405
2406	switch (hdev->vendor) {
2407	case USB_VENDOR_ID_CODEMERCS:
2408		/* ignore all Code Mercenaries IOWarrior devices */
2409		if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2410				hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2411			return true;
2412		break;
2413	case USB_VENDOR_ID_LOGITECH:
2414		if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2415				hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2416			return true;
2417		/*
2418		 * The Keene FM transmitter USB device has the same USB ID as
2419		 * the Logitech AudioHub Speaker, but it should ignore the hid.
2420		 * Check if the name is that of the Keene device.
2421		 * For reference: the name of the AudioHub is
2422		 * "HOLTEK  AudioHub Speaker".
2423		 */
2424		if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2425			!strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2426				return true;
2427		break;
2428	case USB_VENDOR_ID_SOUNDGRAPH:
2429		if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2430		    hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2431			return true;
2432		break;
2433	case USB_VENDOR_ID_HANWANG:
2434		if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2435		    hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2436			return true;
2437		break;
2438	case USB_VENDOR_ID_JESS:
2439		if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2440				hdev->type == HID_TYPE_USBNONE)
2441			return true;
2442		break;
2443	case USB_VENDOR_ID_VELLEMAN:
2444		/* These are not HID devices.  They are handled by comedi. */
2445		if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2446		     hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2447		    (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2448		     hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2449			return true;
2450		break;
2451	case USB_VENDOR_ID_ATMEL_V_USB:
2452		/* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2453		 * it has the same USB ID as many Atmel V-USB devices. This
2454		 * usb radio is handled by radio-ma901.c driver so we want
2455		 * ignore the hid. Check the name, bus, product and ignore
2456		 * if we have MA901 usb radio.
2457		 */
2458		if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2459			hdev->bus == BUS_USB &&
2460			strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2461			return true;
2462		break;
2463	}
2464
2465	if (hdev->type == HID_TYPE_USBMOUSE &&
2466			hid_match_id(hdev, hid_mouse_ignore_list))
2467		return true;
2468
2469	return !!hid_match_id(hdev, hid_ignore_list);
2470}
2471EXPORT_SYMBOL_GPL(hid_ignore);
2472
2473int hid_add_device(struct hid_device *hdev)
2474{
2475	static atomic_t id = ATOMIC_INIT(0);
2476	int ret;
2477
2478	if (WARN_ON(hdev->status & HID_STAT_ADDED))
2479		return -EBUSY;
2480
2481	/* we need to kill them here, otherwise they will stay allocated to
2482	 * wait for coming driver */
2483	if (hid_ignore(hdev))
2484		return -ENODEV;
2485
2486	/*
2487	 * Check for the mandatory transport channel.
2488	 */
2489	 if (!hdev->ll_driver->raw_request) {
2490		hid_err(hdev, "transport driver missing .raw_request()\n");
2491		return -EINVAL;
2492	 }
2493
2494	/*
2495	 * Read the device report descriptor once and use as template
2496	 * for the driver-specific modifications.
2497	 */
2498	ret = hdev->ll_driver->parse(hdev);
2499	if (ret)
2500		return ret;
2501	if (!hdev->dev_rdesc)
2502		return -ENODEV;
2503
2504	/*
2505	 * Scan generic devices for group information
2506	 */
2507	if (hid_ignore_special_drivers ||
2508	    !hid_match_id(hdev, hid_have_special_driver)) {
2509		ret = hid_scan_report(hdev);
2510		if (ret)
2511			hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2512	}
2513
2514	/* XXX hack, any other cleaner solution after the driver core
2515	 * is converted to allow more than 20 bytes as the device name? */
2516	dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2517		     hdev->vendor, hdev->product, atomic_inc_return(&id));
2518
2519	hid_debug_register(hdev, dev_name(&hdev->dev));
2520	ret = device_add(&hdev->dev);
2521	if (!ret)
2522		hdev->status |= HID_STAT_ADDED;
2523	else
2524		hid_debug_unregister(hdev);
2525
2526	return ret;
2527}
2528EXPORT_SYMBOL_GPL(hid_add_device);
2529
2530/**
2531 * hid_allocate_device - allocate new hid device descriptor
2532 *
2533 * Allocate and initialize hid device, so that hid_destroy_device might be
2534 * used to free it.
2535 *
2536 * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2537 * error value.
2538 */
2539struct hid_device *hid_allocate_device(void)
2540{
2541	struct hid_device *hdev;
2542	int ret = -ENOMEM;
2543
2544	hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2545	if (hdev == NULL)
2546		return ERR_PTR(ret);
2547
2548	device_initialize(&hdev->dev);
2549	hdev->dev.release = hid_device_release;
2550	hdev->dev.bus = &hid_bus_type;
2551
2552	hid_close_report(hdev);
2553
2554	init_waitqueue_head(&hdev->debug_wait);
2555	INIT_LIST_HEAD(&hdev->debug_list);
2556	spin_lock_init(&hdev->debug_list_lock);
2557	sema_init(&hdev->driver_lock, 1);
2558	sema_init(&hdev->driver_input_lock, 1);
2559
2560	return hdev;
2561}
2562EXPORT_SYMBOL_GPL(hid_allocate_device);
2563
2564static void hid_remove_device(struct hid_device *hdev)
2565{
2566	if (hdev->status & HID_STAT_ADDED) {
2567		device_del(&hdev->dev);
2568		hid_debug_unregister(hdev);
2569		hdev->status &= ~HID_STAT_ADDED;
2570	}
2571	kfree(hdev->dev_rdesc);
2572	hdev->dev_rdesc = NULL;
2573	hdev->dev_rsize = 0;
2574}
2575
2576/**
2577 * hid_destroy_device - free previously allocated device
2578 *
2579 * @hdev: hid device
2580 *
2581 * If you allocate hid_device through hid_allocate_device, you should ever
2582 * free by this function.
2583 */
2584void hid_destroy_device(struct hid_device *hdev)
2585{
2586	hid_remove_device(hdev);
2587	put_device(&hdev->dev);
2588}
2589EXPORT_SYMBOL_GPL(hid_destroy_device);
2590
2591int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2592		const char *mod_name)
2593{
2594	int ret;
2595
2596	hdrv->driver.name = hdrv->name;
2597	hdrv->driver.bus = &hid_bus_type;
2598	hdrv->driver.owner = owner;
2599	hdrv->driver.mod_name = mod_name;
2600
2601	INIT_LIST_HEAD(&hdrv->dyn_list);
2602	spin_lock_init(&hdrv->dyn_lock);
2603
2604	ret = driver_register(&hdrv->driver);
2605	if (ret)
2606		return ret;
2607
2608	ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2609	if (ret)
2610		driver_unregister(&hdrv->driver);
2611
2612	return ret;
2613}
2614EXPORT_SYMBOL_GPL(__hid_register_driver);
2615
2616void hid_unregister_driver(struct hid_driver *hdrv)
2617{
2618	driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2619	driver_unregister(&hdrv->driver);
2620	hid_free_dynids(hdrv);
2621}
2622EXPORT_SYMBOL_GPL(hid_unregister_driver);
2623
2624int hid_check_keys_pressed(struct hid_device *hid)
2625{
2626	struct hid_input *hidinput;
2627	int i;
2628
2629	if (!(hid->claimed & HID_CLAIMED_INPUT))
2630		return 0;
2631
2632	list_for_each_entry(hidinput, &hid->inputs, list) {
2633		for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2634			if (hidinput->input->key[i])
2635				return 1;
2636	}
2637
2638	return 0;
2639}
2640
2641EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2642
2643static int __init hid_init(void)
2644{
2645	int ret;
2646
2647	if (hid_debug)
2648		pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2649			"debugfs is now used for inspecting the device (report descriptor, reports)\n");
2650
2651	ret = bus_register(&hid_bus_type);
2652	if (ret) {
2653		pr_err("can't register hid bus\n");
2654		goto err;
2655	}
2656
2657	ret = hidraw_init();
2658	if (ret)
2659		goto err_bus;
2660
2661	hid_debug_init();
2662
2663	return 0;
2664err_bus:
2665	bus_unregister(&hid_bus_type);
2666err:
2667	return ret;
2668}
2669
2670static void __exit hid_exit(void)
2671{
2672	hid_debug_exit();
2673	hidraw_exit();
2674	bus_unregister(&hid_bus_type);
2675}
2676
2677module_init(hid_init);
2678module_exit(hid_exit);
2679
2680MODULE_AUTHOR("Andreas Gal");
2681MODULE_AUTHOR("Vojtech Pavlik");
2682MODULE_AUTHOR("Jiri Kosina");
2683MODULE_LICENSE(DRIVER_LICENSE);
2684
2685