xref: /linux/drivers/hid/hid-core.c (revision 08ec212c0f92cbf30e3ecc7349f18151714041d6)
1 /*
2  *  HID support for Linux
3  *
4  *  Copyright (c) 1999 Andreas Gal
5  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
6  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
7  *  Copyright (c) 2006-2012 Jiri Kosina
8  */
9 
10 /*
11  * This program is free software; you can redistribute it and/or modify it
12  * under the terms of the GNU General Public License as published by the Free
13  * Software Foundation; either version 2 of the License, or (at your option)
14  * any later version.
15  */
16 
17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18 
19 #include <linux/module.h>
20 #include <linux/slab.h>
21 #include <linux/init.h>
22 #include <linux/kernel.h>
23 #include <linux/list.h>
24 #include <linux/mm.h>
25 #include <linux/spinlock.h>
26 #include <asm/unaligned.h>
27 #include <asm/byteorder.h>
28 #include <linux/input.h>
29 #include <linux/wait.h>
30 #include <linux/vmalloc.h>
31 #include <linux/sched.h>
32 #include <linux/semaphore.h>
33 
34 #include <linux/hid.h>
35 #include <linux/hiddev.h>
36 #include <linux/hid-debug.h>
37 #include <linux/hidraw.h>
38 
39 #include "hid-ids.h"
40 
41 /*
42  * Version Information
43  */
44 
45 #define DRIVER_DESC "HID core driver"
46 #define DRIVER_LICENSE "GPL"
47 
48 int hid_debug = 0;
49 module_param_named(debug, hid_debug, int, 0600);
50 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
51 EXPORT_SYMBOL_GPL(hid_debug);
52 
53 static int hid_ignore_special_drivers = 0;
54 module_param_named(ignore_special_drivers, hid_ignore_special_drivers, int, 0600);
55 MODULE_PARM_DESC(debug, "Ignore any special drivers and handle all devices by generic driver");
56 
57 /*
58  * Register a new report for a device.
59  */
60 
61 struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
62 {
63 	struct hid_report_enum *report_enum = device->report_enum + type;
64 	struct hid_report *report;
65 
66 	if (report_enum->report_id_hash[id])
67 		return report_enum->report_id_hash[id];
68 
69 	report = kzalloc(sizeof(struct hid_report), GFP_KERNEL);
70 	if (!report)
71 		return NULL;
72 
73 	if (id != 0)
74 		report_enum->numbered = 1;
75 
76 	report->id = id;
77 	report->type = type;
78 	report->size = 0;
79 	report->device = device;
80 	report_enum->report_id_hash[id] = report;
81 
82 	list_add_tail(&report->list, &report_enum->report_list);
83 
84 	return report;
85 }
86 EXPORT_SYMBOL_GPL(hid_register_report);
87 
88 /*
89  * Register a new field for this report.
90  */
91 
92 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
93 {
94 	struct hid_field *field;
95 
96 	if (report->maxfield == HID_MAX_FIELDS) {
97 		hid_err(report->device, "too many fields in report\n");
98 		return NULL;
99 	}
100 
101 	field = kzalloc((sizeof(struct hid_field) +
102 			 usages * sizeof(struct hid_usage) +
103 			 values * sizeof(unsigned)), GFP_KERNEL);
104 	if (!field)
105 		return NULL;
106 
107 	field->index = report->maxfield++;
108 	report->field[field->index] = field;
109 	field->usage = (struct hid_usage *)(field + 1);
110 	field->value = (s32 *)(field->usage + usages);
111 	field->report = report;
112 
113 	return field;
114 }
115 
116 /*
117  * Open a collection. The type/usage is pushed on the stack.
118  */
119 
120 static int open_collection(struct hid_parser *parser, unsigned type)
121 {
122 	struct hid_collection *collection;
123 	unsigned usage;
124 
125 	usage = parser->local.usage[0];
126 
127 	if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
128 		hid_err(parser->device, "collection stack overflow\n");
129 		return -EINVAL;
130 	}
131 
132 	if (parser->device->maxcollection == parser->device->collection_size) {
133 		collection = kmalloc(sizeof(struct hid_collection) *
134 				parser->device->collection_size * 2, GFP_KERNEL);
135 		if (collection == NULL) {
136 			hid_err(parser->device, "failed to reallocate collection array\n");
137 			return -ENOMEM;
138 		}
139 		memcpy(collection, parser->device->collection,
140 			sizeof(struct hid_collection) *
141 			parser->device->collection_size);
142 		memset(collection + parser->device->collection_size, 0,
143 			sizeof(struct hid_collection) *
144 			parser->device->collection_size);
145 		kfree(parser->device->collection);
146 		parser->device->collection = collection;
147 		parser->device->collection_size *= 2;
148 	}
149 
150 	parser->collection_stack[parser->collection_stack_ptr++] =
151 		parser->device->maxcollection;
152 
153 	collection = parser->device->collection +
154 		parser->device->maxcollection++;
155 	collection->type = type;
156 	collection->usage = usage;
157 	collection->level = parser->collection_stack_ptr - 1;
158 
159 	if (type == HID_COLLECTION_APPLICATION)
160 		parser->device->maxapplication++;
161 
162 	return 0;
163 }
164 
165 /*
166  * Close a collection.
167  */
168 
169 static int close_collection(struct hid_parser *parser)
170 {
171 	if (!parser->collection_stack_ptr) {
172 		hid_err(parser->device, "collection stack underflow\n");
173 		return -EINVAL;
174 	}
175 	parser->collection_stack_ptr--;
176 	return 0;
177 }
178 
179 /*
180  * Climb up the stack, search for the specified collection type
181  * and return the usage.
182  */
183 
184 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
185 {
186 	struct hid_collection *collection = parser->device->collection;
187 	int n;
188 
189 	for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
190 		unsigned index = parser->collection_stack[n];
191 		if (collection[index].type == type)
192 			return collection[index].usage;
193 	}
194 	return 0; /* we know nothing about this usage type */
195 }
196 
197 /*
198  * Add a usage to the temporary parser table.
199  */
200 
201 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
202 {
203 	if (parser->local.usage_index >= HID_MAX_USAGES) {
204 		hid_err(parser->device, "usage index exceeded\n");
205 		return -1;
206 	}
207 	parser->local.usage[parser->local.usage_index] = usage;
208 	parser->local.collection_index[parser->local.usage_index] =
209 		parser->collection_stack_ptr ?
210 		parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
211 	parser->local.usage_index++;
212 	return 0;
213 }
214 
215 /*
216  * Register a new field for this report.
217  */
218 
219 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
220 {
221 	struct hid_report *report;
222 	struct hid_field *field;
223 	int usages;
224 	unsigned offset;
225 	int i;
226 
227 	report = hid_register_report(parser->device, report_type, parser->global.report_id);
228 	if (!report) {
229 		hid_err(parser->device, "hid_register_report failed\n");
230 		return -1;
231 	}
232 
233 	/* Handle both signed and unsigned cases properly */
234 	if ((parser->global.logical_minimum < 0 &&
235 		parser->global.logical_maximum <
236 		parser->global.logical_minimum) ||
237 		(parser->global.logical_minimum >= 0 &&
238 		(__u32)parser->global.logical_maximum <
239 		(__u32)parser->global.logical_minimum)) {
240 		dbg_hid("logical range invalid 0x%x 0x%x\n",
241 			parser->global.logical_minimum,
242 			parser->global.logical_maximum);
243 		return -1;
244 	}
245 
246 	offset = report->size;
247 	report->size += parser->global.report_size * parser->global.report_count;
248 
249 	if (!parser->local.usage_index) /* Ignore padding fields */
250 		return 0;
251 
252 	usages = max_t(int, parser->local.usage_index, parser->global.report_count);
253 
254 	field = hid_register_field(report, usages, parser->global.report_count);
255 	if (!field)
256 		return 0;
257 
258 	field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
259 	field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
260 	field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
261 
262 	for (i = 0; i < usages; i++) {
263 		int j = i;
264 		/* Duplicate the last usage we parsed if we have excess values */
265 		if (i >= parser->local.usage_index)
266 			j = parser->local.usage_index - 1;
267 		field->usage[i].hid = parser->local.usage[j];
268 		field->usage[i].collection_index =
269 			parser->local.collection_index[j];
270 	}
271 
272 	field->maxusage = usages;
273 	field->flags = flags;
274 	field->report_offset = offset;
275 	field->report_type = report_type;
276 	field->report_size = parser->global.report_size;
277 	field->report_count = parser->global.report_count;
278 	field->logical_minimum = parser->global.logical_minimum;
279 	field->logical_maximum = parser->global.logical_maximum;
280 	field->physical_minimum = parser->global.physical_minimum;
281 	field->physical_maximum = parser->global.physical_maximum;
282 	field->unit_exponent = parser->global.unit_exponent;
283 	field->unit = parser->global.unit;
284 
285 	return 0;
286 }
287 
288 /*
289  * Read data value from item.
290  */
291 
292 static u32 item_udata(struct hid_item *item)
293 {
294 	switch (item->size) {
295 	case 1: return item->data.u8;
296 	case 2: return item->data.u16;
297 	case 4: return item->data.u32;
298 	}
299 	return 0;
300 }
301 
302 static s32 item_sdata(struct hid_item *item)
303 {
304 	switch (item->size) {
305 	case 1: return item->data.s8;
306 	case 2: return item->data.s16;
307 	case 4: return item->data.s32;
308 	}
309 	return 0;
310 }
311 
312 /*
313  * Process a global item.
314  */
315 
316 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
317 {
318 	switch (item->tag) {
319 	case HID_GLOBAL_ITEM_TAG_PUSH:
320 
321 		if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
322 			hid_err(parser->device, "global environment stack overflow\n");
323 			return -1;
324 		}
325 
326 		memcpy(parser->global_stack + parser->global_stack_ptr++,
327 			&parser->global, sizeof(struct hid_global));
328 		return 0;
329 
330 	case HID_GLOBAL_ITEM_TAG_POP:
331 
332 		if (!parser->global_stack_ptr) {
333 			hid_err(parser->device, "global environment stack underflow\n");
334 			return -1;
335 		}
336 
337 		memcpy(&parser->global, parser->global_stack +
338 			--parser->global_stack_ptr, sizeof(struct hid_global));
339 		return 0;
340 
341 	case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
342 		parser->global.usage_page = item_udata(item);
343 		return 0;
344 
345 	case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
346 		parser->global.logical_minimum = item_sdata(item);
347 		return 0;
348 
349 	case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
350 		if (parser->global.logical_minimum < 0)
351 			parser->global.logical_maximum = item_sdata(item);
352 		else
353 			parser->global.logical_maximum = item_udata(item);
354 		return 0;
355 
356 	case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
357 		parser->global.physical_minimum = item_sdata(item);
358 		return 0;
359 
360 	case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
361 		if (parser->global.physical_minimum < 0)
362 			parser->global.physical_maximum = item_sdata(item);
363 		else
364 			parser->global.physical_maximum = item_udata(item);
365 		return 0;
366 
367 	case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
368 		parser->global.unit_exponent = item_sdata(item);
369 		return 0;
370 
371 	case HID_GLOBAL_ITEM_TAG_UNIT:
372 		parser->global.unit = item_udata(item);
373 		return 0;
374 
375 	case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
376 		parser->global.report_size = item_udata(item);
377 		if (parser->global.report_size > 128) {
378 			hid_err(parser->device, "invalid report_size %d\n",
379 					parser->global.report_size);
380 			return -1;
381 		}
382 		return 0;
383 
384 	case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
385 		parser->global.report_count = item_udata(item);
386 		if (parser->global.report_count > HID_MAX_USAGES) {
387 			hid_err(parser->device, "invalid report_count %d\n",
388 					parser->global.report_count);
389 			return -1;
390 		}
391 		return 0;
392 
393 	case HID_GLOBAL_ITEM_TAG_REPORT_ID:
394 		parser->global.report_id = item_udata(item);
395 		if (parser->global.report_id == 0) {
396 			hid_err(parser->device, "report_id 0 is invalid\n");
397 			return -1;
398 		}
399 		return 0;
400 
401 	default:
402 		hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
403 		return -1;
404 	}
405 }
406 
407 /*
408  * Process a local item.
409  */
410 
411 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
412 {
413 	__u32 data;
414 	unsigned n;
415 
416 	data = item_udata(item);
417 
418 	switch (item->tag) {
419 	case HID_LOCAL_ITEM_TAG_DELIMITER:
420 
421 		if (data) {
422 			/*
423 			 * We treat items before the first delimiter
424 			 * as global to all usage sets (branch 0).
425 			 * In the moment we process only these global
426 			 * items and the first delimiter set.
427 			 */
428 			if (parser->local.delimiter_depth != 0) {
429 				hid_err(parser->device, "nested delimiters\n");
430 				return -1;
431 			}
432 			parser->local.delimiter_depth++;
433 			parser->local.delimiter_branch++;
434 		} else {
435 			if (parser->local.delimiter_depth < 1) {
436 				hid_err(parser->device, "bogus close delimiter\n");
437 				return -1;
438 			}
439 			parser->local.delimiter_depth--;
440 		}
441 		return 1;
442 
443 	case HID_LOCAL_ITEM_TAG_USAGE:
444 
445 		if (parser->local.delimiter_branch > 1) {
446 			dbg_hid("alternative usage ignored\n");
447 			return 0;
448 		}
449 
450 		if (item->size <= 2)
451 			data = (parser->global.usage_page << 16) + data;
452 
453 		return hid_add_usage(parser, data);
454 
455 	case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
456 
457 		if (parser->local.delimiter_branch > 1) {
458 			dbg_hid("alternative usage ignored\n");
459 			return 0;
460 		}
461 
462 		if (item->size <= 2)
463 			data = (parser->global.usage_page << 16) + data;
464 
465 		parser->local.usage_minimum = data;
466 		return 0;
467 
468 	case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
469 
470 		if (parser->local.delimiter_branch > 1) {
471 			dbg_hid("alternative usage ignored\n");
472 			return 0;
473 		}
474 
475 		if (item->size <= 2)
476 			data = (parser->global.usage_page << 16) + data;
477 
478 		for (n = parser->local.usage_minimum; n <= data; n++)
479 			if (hid_add_usage(parser, n)) {
480 				dbg_hid("hid_add_usage failed\n");
481 				return -1;
482 			}
483 		return 0;
484 
485 	default:
486 
487 		dbg_hid("unknown local item tag 0x%x\n", item->tag);
488 		return 0;
489 	}
490 	return 0;
491 }
492 
493 /*
494  * Process a main item.
495  */
496 
497 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
498 {
499 	__u32 data;
500 	int ret;
501 
502 	data = item_udata(item);
503 
504 	switch (item->tag) {
505 	case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
506 		ret = open_collection(parser, data & 0xff);
507 		break;
508 	case HID_MAIN_ITEM_TAG_END_COLLECTION:
509 		ret = close_collection(parser);
510 		break;
511 	case HID_MAIN_ITEM_TAG_INPUT:
512 		ret = hid_add_field(parser, HID_INPUT_REPORT, data);
513 		break;
514 	case HID_MAIN_ITEM_TAG_OUTPUT:
515 		ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
516 		break;
517 	case HID_MAIN_ITEM_TAG_FEATURE:
518 		ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
519 		break;
520 	default:
521 		hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
522 		ret = 0;
523 	}
524 
525 	memset(&parser->local, 0, sizeof(parser->local));	/* Reset the local parser environment */
526 
527 	return ret;
528 }
529 
530 /*
531  * Process a reserved item.
532  */
533 
534 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
535 {
536 	dbg_hid("reserved item type, tag 0x%x\n", item->tag);
537 	return 0;
538 }
539 
540 /*
541  * Free a report and all registered fields. The field->usage and
542  * field->value table's are allocated behind the field, so we need
543  * only to free(field) itself.
544  */
545 
546 static void hid_free_report(struct hid_report *report)
547 {
548 	unsigned n;
549 
550 	for (n = 0; n < report->maxfield; n++)
551 		kfree(report->field[n]);
552 	kfree(report);
553 }
554 
555 /*
556  * Close report. This function returns the device
557  * state to the point prior to hid_open_report().
558  */
559 static void hid_close_report(struct hid_device *device)
560 {
561 	unsigned i, j;
562 
563 	for (i = 0; i < HID_REPORT_TYPES; i++) {
564 		struct hid_report_enum *report_enum = device->report_enum + i;
565 
566 		for (j = 0; j < 256; j++) {
567 			struct hid_report *report = report_enum->report_id_hash[j];
568 			if (report)
569 				hid_free_report(report);
570 		}
571 		memset(report_enum, 0, sizeof(*report_enum));
572 		INIT_LIST_HEAD(&report_enum->report_list);
573 	}
574 
575 	kfree(device->rdesc);
576 	device->rdesc = NULL;
577 	device->rsize = 0;
578 
579 	kfree(device->collection);
580 	device->collection = NULL;
581 	device->collection_size = 0;
582 	device->maxcollection = 0;
583 	device->maxapplication = 0;
584 
585 	device->status &= ~HID_STAT_PARSED;
586 }
587 
588 /*
589  * Free a device structure, all reports, and all fields.
590  */
591 
592 static void hid_device_release(struct device *dev)
593 {
594 	struct hid_device *hid = container_of(dev, struct hid_device, dev);
595 
596 	hid_close_report(hid);
597 	kfree(hid->dev_rdesc);
598 	kfree(hid);
599 }
600 
601 /*
602  * Fetch a report description item from the data stream. We support long
603  * items, though they are not used yet.
604  */
605 
606 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
607 {
608 	u8 b;
609 
610 	if ((end - start) <= 0)
611 		return NULL;
612 
613 	b = *start++;
614 
615 	item->type = (b >> 2) & 3;
616 	item->tag  = (b >> 4) & 15;
617 
618 	if (item->tag == HID_ITEM_TAG_LONG) {
619 
620 		item->format = HID_ITEM_FORMAT_LONG;
621 
622 		if ((end - start) < 2)
623 			return NULL;
624 
625 		item->size = *start++;
626 		item->tag  = *start++;
627 
628 		if ((end - start) < item->size)
629 			return NULL;
630 
631 		item->data.longdata = start;
632 		start += item->size;
633 		return start;
634 	}
635 
636 	item->format = HID_ITEM_FORMAT_SHORT;
637 	item->size = b & 3;
638 
639 	switch (item->size) {
640 	case 0:
641 		return start;
642 
643 	case 1:
644 		if ((end - start) < 1)
645 			return NULL;
646 		item->data.u8 = *start++;
647 		return start;
648 
649 	case 2:
650 		if ((end - start) < 2)
651 			return NULL;
652 		item->data.u16 = get_unaligned_le16(start);
653 		start = (__u8 *)((__le16 *)start + 1);
654 		return start;
655 
656 	case 3:
657 		item->size++;
658 		if ((end - start) < 4)
659 			return NULL;
660 		item->data.u32 = get_unaligned_le32(start);
661 		start = (__u8 *)((__le32 *)start + 1);
662 		return start;
663 	}
664 
665 	return NULL;
666 }
667 
668 static void hid_scan_usage(struct hid_device *hid, u32 usage)
669 {
670 	if (usage == HID_DG_CONTACTID)
671 		hid->group = HID_GROUP_MULTITOUCH;
672 }
673 
674 /*
675  * Scan a report descriptor before the device is added to the bus.
676  * Sets device groups and other properties that determine what driver
677  * to load.
678  */
679 static int hid_scan_report(struct hid_device *hid)
680 {
681 	unsigned int page = 0, delim = 0;
682 	__u8 *start = hid->dev_rdesc;
683 	__u8 *end = start + hid->dev_rsize;
684 	unsigned int u, u_min = 0, u_max = 0;
685 	struct hid_item item;
686 
687 	hid->group = HID_GROUP_GENERIC;
688 	while ((start = fetch_item(start, end, &item)) != NULL) {
689 		if (item.format != HID_ITEM_FORMAT_SHORT)
690 			return -EINVAL;
691 		if (item.type == HID_ITEM_TYPE_GLOBAL) {
692 			if (item.tag == HID_GLOBAL_ITEM_TAG_USAGE_PAGE)
693 				page = item_udata(&item) << 16;
694 		} else if (item.type == HID_ITEM_TYPE_LOCAL) {
695 			if (delim > 1)
696 				break;
697 			u = item_udata(&item);
698 			if (item.size <= 2)
699 				u += page;
700 			switch (item.tag) {
701 			case HID_LOCAL_ITEM_TAG_DELIMITER:
702 				delim += !!u;
703 				break;
704 			case HID_LOCAL_ITEM_TAG_USAGE:
705 				hid_scan_usage(hid, u);
706 				break;
707 			case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
708 				u_min = u;
709 				break;
710 			case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
711 				u_max = u;
712 				for (u = u_min; u <= u_max; u++)
713 					hid_scan_usage(hid, u);
714 				break;
715 			}
716 		}
717 	}
718 
719 	return 0;
720 }
721 
722 /**
723  * hid_parse_report - parse device report
724  *
725  * @device: hid device
726  * @start: report start
727  * @size: report size
728  *
729  * Allocate the device report as read by the bus driver. This function should
730  * only be called from parse() in ll drivers.
731  */
732 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
733 {
734 	hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
735 	if (!hid->dev_rdesc)
736 		return -ENOMEM;
737 	hid->dev_rsize = size;
738 	return 0;
739 }
740 EXPORT_SYMBOL_GPL(hid_parse_report);
741 
742 /**
743  * hid_open_report - open a driver-specific device report
744  *
745  * @device: hid device
746  *
747  * Parse a report description into a hid_device structure. Reports are
748  * enumerated, fields are attached to these reports.
749  * 0 returned on success, otherwise nonzero error value.
750  *
751  * This function (or the equivalent hid_parse() macro) should only be
752  * called from probe() in drivers, before starting the device.
753  */
754 int hid_open_report(struct hid_device *device)
755 {
756 	struct hid_parser *parser;
757 	struct hid_item item;
758 	unsigned int size;
759 	__u8 *start;
760 	__u8 *buf;
761 	__u8 *end;
762 	int ret;
763 	static int (*dispatch_type[])(struct hid_parser *parser,
764 				      struct hid_item *item) = {
765 		hid_parser_main,
766 		hid_parser_global,
767 		hid_parser_local,
768 		hid_parser_reserved
769 	};
770 
771 	if (WARN_ON(device->status & HID_STAT_PARSED))
772 		return -EBUSY;
773 
774 	start = device->dev_rdesc;
775 	if (WARN_ON(!start))
776 		return -ENODEV;
777 	size = device->dev_rsize;
778 
779 	buf = kmemdup(start, size, GFP_KERNEL);
780 	if (buf == NULL)
781 		return -ENOMEM;
782 
783 	if (device->driver->report_fixup)
784 		start = device->driver->report_fixup(device, buf, &size);
785 	else
786 		start = buf;
787 
788 	start = kmemdup(start, size, GFP_KERNEL);
789 	kfree(buf);
790 	if (start == NULL)
791 		return -ENOMEM;
792 
793 	device->rdesc = start;
794 	device->rsize = size;
795 
796 	parser = vzalloc(sizeof(struct hid_parser));
797 	if (!parser) {
798 		ret = -ENOMEM;
799 		goto err;
800 	}
801 
802 	parser->device = device;
803 
804 	end = start + size;
805 
806 	device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
807 				     sizeof(struct hid_collection), GFP_KERNEL);
808 	if (!device->collection) {
809 		ret = -ENOMEM;
810 		goto err;
811 	}
812 	device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
813 
814 	ret = -EINVAL;
815 	while ((start = fetch_item(start, end, &item)) != NULL) {
816 
817 		if (item.format != HID_ITEM_FORMAT_SHORT) {
818 			hid_err(device, "unexpected long global item\n");
819 			goto err;
820 		}
821 
822 		if (dispatch_type[item.type](parser, &item)) {
823 			hid_err(device, "item %u %u %u %u parsing failed\n",
824 				item.format, (unsigned)item.size,
825 				(unsigned)item.type, (unsigned)item.tag);
826 			goto err;
827 		}
828 
829 		if (start == end) {
830 			if (parser->collection_stack_ptr) {
831 				hid_err(device, "unbalanced collection at end of report description\n");
832 				goto err;
833 			}
834 			if (parser->local.delimiter_depth) {
835 				hid_err(device, "unbalanced delimiter at end of report description\n");
836 				goto err;
837 			}
838 			vfree(parser);
839 			device->status |= HID_STAT_PARSED;
840 			return 0;
841 		}
842 	}
843 
844 	hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
845 err:
846 	vfree(parser);
847 	hid_close_report(device);
848 	return ret;
849 }
850 EXPORT_SYMBOL_GPL(hid_open_report);
851 
852 /*
853  * Convert a signed n-bit integer to signed 32-bit integer. Common
854  * cases are done through the compiler, the screwed things has to be
855  * done by hand.
856  */
857 
858 static s32 snto32(__u32 value, unsigned n)
859 {
860 	switch (n) {
861 	case 8:  return ((__s8)value);
862 	case 16: return ((__s16)value);
863 	case 32: return ((__s32)value);
864 	}
865 	return value & (1 << (n - 1)) ? value | (-1 << n) : value;
866 }
867 
868 /*
869  * Convert a signed 32-bit integer to a signed n-bit integer.
870  */
871 
872 static u32 s32ton(__s32 value, unsigned n)
873 {
874 	s32 a = value >> (n - 1);
875 	if (a && a != -1)
876 		return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
877 	return value & ((1 << n) - 1);
878 }
879 
880 /*
881  * Extract/implement a data field from/to a little endian report (bit array).
882  *
883  * Code sort-of follows HID spec:
884  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
885  *
886  * While the USB HID spec allows unlimited length bit fields in "report
887  * descriptors", most devices never use more than 16 bits.
888  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
889  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
890  */
891 
892 static __u32 extract(const struct hid_device *hid, __u8 *report,
893 		     unsigned offset, unsigned n)
894 {
895 	u64 x;
896 
897 	if (n > 32)
898 		hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
899 			 n, current->comm);
900 
901 	report += offset >> 3;  /* adjust byte index */
902 	offset &= 7;            /* now only need bit offset into one byte */
903 	x = get_unaligned_le64(report);
904 	x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
905 	return (u32) x;
906 }
907 
908 /*
909  * "implement" : set bits in a little endian bit stream.
910  * Same concepts as "extract" (see comments above).
911  * The data mangled in the bit stream remains in little endian
912  * order the whole time. It make more sense to talk about
913  * endianness of register values by considering a register
914  * a "cached" copy of the little endiad bit stream.
915  */
916 static void implement(const struct hid_device *hid, __u8 *report,
917 		      unsigned offset, unsigned n, __u32 value)
918 {
919 	u64 x;
920 	u64 m = (1ULL << n) - 1;
921 
922 	if (n > 32)
923 		hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
924 			 __func__, n, current->comm);
925 
926 	if (value > m)
927 		hid_warn(hid, "%s() called with too large value %d! (%s)\n",
928 			 __func__, value, current->comm);
929 	WARN_ON(value > m);
930 	value &= m;
931 
932 	report += offset >> 3;
933 	offset &= 7;
934 
935 	x = get_unaligned_le64(report);
936 	x &= ~(m << offset);
937 	x |= ((u64)value) << offset;
938 	put_unaligned_le64(x, report);
939 }
940 
941 /*
942  * Search an array for a value.
943  */
944 
945 static int search(__s32 *array, __s32 value, unsigned n)
946 {
947 	while (n--) {
948 		if (*array++ == value)
949 			return 0;
950 	}
951 	return -1;
952 }
953 
954 /**
955  * hid_match_report - check if driver's raw_event should be called
956  *
957  * @hid: hid device
958  * @report_type: type to match against
959  *
960  * compare hid->driver->report_table->report_type to report->type
961  */
962 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
963 {
964 	const struct hid_report_id *id = hid->driver->report_table;
965 
966 	if (!id) /* NULL means all */
967 		return 1;
968 
969 	for (; id->report_type != HID_TERMINATOR; id++)
970 		if (id->report_type == HID_ANY_ID ||
971 				id->report_type == report->type)
972 			return 1;
973 	return 0;
974 }
975 
976 /**
977  * hid_match_usage - check if driver's event should be called
978  *
979  * @hid: hid device
980  * @usage: usage to match against
981  *
982  * compare hid->driver->usage_table->usage_{type,code} to
983  * usage->usage_{type,code}
984  */
985 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
986 {
987 	const struct hid_usage_id *id = hid->driver->usage_table;
988 
989 	if (!id) /* NULL means all */
990 		return 1;
991 
992 	for (; id->usage_type != HID_ANY_ID - 1; id++)
993 		if ((id->usage_hid == HID_ANY_ID ||
994 				id->usage_hid == usage->hid) &&
995 				(id->usage_type == HID_ANY_ID ||
996 				id->usage_type == usage->type) &&
997 				(id->usage_code == HID_ANY_ID ||
998 				 id->usage_code == usage->code))
999 			return 1;
1000 	return 0;
1001 }
1002 
1003 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1004 		struct hid_usage *usage, __s32 value, int interrupt)
1005 {
1006 	struct hid_driver *hdrv = hid->driver;
1007 	int ret;
1008 
1009 	if (!list_empty(&hid->debug_list))
1010 		hid_dump_input(hid, usage, value);
1011 
1012 	if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1013 		ret = hdrv->event(hid, field, usage, value);
1014 		if (ret != 0) {
1015 			if (ret < 0)
1016 				hid_err(hid, "%s's event failed with %d\n",
1017 						hdrv->name, ret);
1018 			return;
1019 		}
1020 	}
1021 
1022 	if (hid->claimed & HID_CLAIMED_INPUT)
1023 		hidinput_hid_event(hid, field, usage, value);
1024 	if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1025 		hid->hiddev_hid_event(hid, field, usage, value);
1026 }
1027 
1028 /*
1029  * Analyse a received field, and fetch the data from it. The field
1030  * content is stored for next report processing (we do differential
1031  * reporting to the layer).
1032  */
1033 
1034 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1035 			    __u8 *data, int interrupt)
1036 {
1037 	unsigned n;
1038 	unsigned count = field->report_count;
1039 	unsigned offset = field->report_offset;
1040 	unsigned size = field->report_size;
1041 	__s32 min = field->logical_minimum;
1042 	__s32 max = field->logical_maximum;
1043 	__s32 *value;
1044 
1045 	value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1046 	if (!value)
1047 		return;
1048 
1049 	for (n = 0; n < count; n++) {
1050 
1051 		value[n] = min < 0 ?
1052 			snto32(extract(hid, data, offset + n * size, size),
1053 			       size) :
1054 			extract(hid, data, offset + n * size, size);
1055 
1056 		/* Ignore report if ErrorRollOver */
1057 		if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1058 		    value[n] >= min && value[n] <= max &&
1059 		    field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1060 			goto exit;
1061 	}
1062 
1063 	for (n = 0; n < count; n++) {
1064 
1065 		if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1066 			hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1067 			continue;
1068 		}
1069 
1070 		if (field->value[n] >= min && field->value[n] <= max
1071 			&& field->usage[field->value[n] - min].hid
1072 			&& search(value, field->value[n], count))
1073 				hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1074 
1075 		if (value[n] >= min && value[n] <= max
1076 			&& field->usage[value[n] - min].hid
1077 			&& search(field->value, value[n], count))
1078 				hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1079 	}
1080 
1081 	memcpy(field->value, value, count * sizeof(__s32));
1082 exit:
1083 	kfree(value);
1084 }
1085 
1086 /*
1087  * Output the field into the report.
1088  */
1089 
1090 static void hid_output_field(const struct hid_device *hid,
1091 			     struct hid_field *field, __u8 *data)
1092 {
1093 	unsigned count = field->report_count;
1094 	unsigned offset = field->report_offset;
1095 	unsigned size = field->report_size;
1096 	unsigned n;
1097 
1098 	for (n = 0; n < count; n++) {
1099 		if (field->logical_minimum < 0)	/* signed values */
1100 			implement(hid, data, offset + n * size, size,
1101 				  s32ton(field->value[n], size));
1102 		else				/* unsigned values */
1103 			implement(hid, data, offset + n * size, size,
1104 				  field->value[n]);
1105 	}
1106 }
1107 
1108 /*
1109  * Create a report.
1110  */
1111 
1112 void hid_output_report(struct hid_report *report, __u8 *data)
1113 {
1114 	unsigned n;
1115 
1116 	if (report->id > 0)
1117 		*data++ = report->id;
1118 
1119 	memset(data, 0, ((report->size - 1) >> 3) + 1);
1120 	for (n = 0; n < report->maxfield; n++)
1121 		hid_output_field(report->device, report->field[n], data);
1122 }
1123 EXPORT_SYMBOL_GPL(hid_output_report);
1124 
1125 /*
1126  * Set a field value. The report this field belongs to has to be
1127  * created and transferred to the device, to set this value in the
1128  * device.
1129  */
1130 
1131 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1132 {
1133 	unsigned size = field->report_size;
1134 
1135 	hid_dump_input(field->report->device, field->usage + offset, value);
1136 
1137 	if (offset >= field->report_count) {
1138 		hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1139 				offset, field->report_count);
1140 		return -1;
1141 	}
1142 	if (field->logical_minimum < 0) {
1143 		if (value != snto32(s32ton(value, size), size)) {
1144 			hid_err(field->report->device, "value %d is out of range\n", value);
1145 			return -1;
1146 		}
1147 	}
1148 	field->value[offset] = value;
1149 	return 0;
1150 }
1151 EXPORT_SYMBOL_GPL(hid_set_field);
1152 
1153 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1154 		const u8 *data)
1155 {
1156 	struct hid_report *report;
1157 	unsigned int n = 0;	/* Normally report number is 0 */
1158 
1159 	/* Device uses numbered reports, data[0] is report number */
1160 	if (report_enum->numbered)
1161 		n = *data;
1162 
1163 	report = report_enum->report_id_hash[n];
1164 	if (report == NULL)
1165 		dbg_hid("undefined report_id %u received\n", n);
1166 
1167 	return report;
1168 }
1169 
1170 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1171 		int interrupt)
1172 {
1173 	struct hid_report_enum *report_enum = hid->report_enum + type;
1174 	struct hid_report *report;
1175 	unsigned int a;
1176 	int rsize, csize = size;
1177 	u8 *cdata = data;
1178 	int ret = 0;
1179 
1180 	report = hid_get_report(report_enum, data);
1181 	if (!report)
1182 		goto out;
1183 
1184 	if (report_enum->numbered) {
1185 		cdata++;
1186 		csize--;
1187 	}
1188 
1189 	rsize = ((report->size - 1) >> 3) + 1;
1190 
1191 	if (rsize > HID_MAX_BUFFER_SIZE)
1192 		rsize = HID_MAX_BUFFER_SIZE;
1193 
1194 	if (csize < rsize) {
1195 		dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1196 				csize, rsize);
1197 		memset(cdata + csize, 0, rsize - csize);
1198 	}
1199 
1200 	if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1201 		hid->hiddev_report_event(hid, report);
1202 	if (hid->claimed & HID_CLAIMED_HIDRAW) {
1203 		ret = hidraw_report_event(hid, data, size);
1204 		if (ret)
1205 			goto out;
1206 	}
1207 
1208 	if (hid->claimed != HID_CLAIMED_HIDRAW) {
1209 		for (a = 0; a < report->maxfield; a++)
1210 			hid_input_field(hid, report->field[a], cdata, interrupt);
1211 	}
1212 
1213 	if (hid->claimed & HID_CLAIMED_INPUT)
1214 		hidinput_report_event(hid, report);
1215 out:
1216 	return ret;
1217 }
1218 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1219 
1220 /**
1221  * hid_input_report - report data from lower layer (usb, bt...)
1222  *
1223  * @hid: hid device
1224  * @type: HID report type (HID_*_REPORT)
1225  * @data: report contents
1226  * @size: size of data parameter
1227  * @interrupt: distinguish between interrupt and control transfers
1228  *
1229  * This is data entry for lower layers.
1230  */
1231 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1232 {
1233 	struct hid_report_enum *report_enum;
1234 	struct hid_driver *hdrv;
1235 	struct hid_report *report;
1236 	char *buf;
1237 	unsigned int i;
1238 	int ret = 0;
1239 
1240 	if (!hid)
1241 		return -ENODEV;
1242 
1243 	if (down_trylock(&hid->driver_lock))
1244 		return -EBUSY;
1245 
1246 	if (!hid->driver) {
1247 		ret = -ENODEV;
1248 		goto unlock;
1249 	}
1250 	report_enum = hid->report_enum + type;
1251 	hdrv = hid->driver;
1252 
1253 	if (!size) {
1254 		dbg_hid("empty report\n");
1255 		ret = -1;
1256 		goto unlock;
1257 	}
1258 
1259 	/* Avoid unnecessary overhead if debugfs is disabled */
1260 	if (list_empty(&hid->debug_list))
1261 		goto nomem;
1262 
1263 	buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
1264 
1265 	if (!buf)
1266 		goto nomem;
1267 
1268 	/* dump the report */
1269 	snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1270 			"\nreport (size %u) (%snumbered) = ", size, report_enum->numbered ? "" : "un");
1271 	hid_debug_event(hid, buf);
1272 
1273 	for (i = 0; i < size; i++) {
1274 		snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1275 				" %02x", data[i]);
1276 		hid_debug_event(hid, buf);
1277 	}
1278 	hid_debug_event(hid, "\n");
1279 	kfree(buf);
1280 
1281 nomem:
1282 	report = hid_get_report(report_enum, data);
1283 
1284 	if (!report) {
1285 		ret = -1;
1286 		goto unlock;
1287 	}
1288 
1289 	if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1290 		ret = hdrv->raw_event(hid, report, data, size);
1291 		if (ret != 0) {
1292 			ret = ret < 0 ? ret : 0;
1293 			goto unlock;
1294 		}
1295 	}
1296 
1297 	ret = hid_report_raw_event(hid, type, data, size, interrupt);
1298 
1299 unlock:
1300 	up(&hid->driver_lock);
1301 	return ret;
1302 }
1303 EXPORT_SYMBOL_GPL(hid_input_report);
1304 
1305 static bool hid_match_one_id(struct hid_device *hdev,
1306 		const struct hid_device_id *id)
1307 {
1308 	return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1309 		(id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1310 		(id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1311 		(id->product == HID_ANY_ID || id->product == hdev->product);
1312 }
1313 
1314 const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1315 		const struct hid_device_id *id)
1316 {
1317 	for (; id->bus; id++)
1318 		if (hid_match_one_id(hdev, id))
1319 			return id;
1320 
1321 	return NULL;
1322 }
1323 
1324 static const struct hid_device_id hid_hiddev_list[] = {
1325 	{ HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1326 	{ HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1327 	{ }
1328 };
1329 
1330 static bool hid_hiddev(struct hid_device *hdev)
1331 {
1332 	return !!hid_match_id(hdev, hid_hiddev_list);
1333 }
1334 
1335 
1336 static ssize_t
1337 read_report_descriptor(struct file *filp, struct kobject *kobj,
1338 		struct bin_attribute *attr,
1339 		char *buf, loff_t off, size_t count)
1340 {
1341 	struct device *dev = container_of(kobj, struct device, kobj);
1342 	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1343 
1344 	if (off >= hdev->rsize)
1345 		return 0;
1346 
1347 	if (off + count > hdev->rsize)
1348 		count = hdev->rsize - off;
1349 
1350 	memcpy(buf, hdev->rdesc + off, count);
1351 
1352 	return count;
1353 }
1354 
1355 static struct bin_attribute dev_bin_attr_report_desc = {
1356 	.attr = { .name = "report_descriptor", .mode = 0444 },
1357 	.read = read_report_descriptor,
1358 	.size = HID_MAX_DESCRIPTOR_SIZE,
1359 };
1360 
1361 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1362 {
1363 	static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1364 		"Joystick", "Gamepad", "Keyboard", "Keypad",
1365 		"Multi-Axis Controller"
1366 	};
1367 	const char *type, *bus;
1368 	char buf[64];
1369 	unsigned int i;
1370 	int len;
1371 	int ret;
1372 
1373 	if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1374 		connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1375 	if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1376 		connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1377 	if (hdev->bus != BUS_USB)
1378 		connect_mask &= ~HID_CONNECT_HIDDEV;
1379 	if (hid_hiddev(hdev))
1380 		connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1381 
1382 	if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1383 				connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1384 		hdev->claimed |= HID_CLAIMED_INPUT;
1385 
1386 	if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1387 			!hdev->hiddev_connect(hdev,
1388 				connect_mask & HID_CONNECT_HIDDEV_FORCE))
1389 		hdev->claimed |= HID_CLAIMED_HIDDEV;
1390 	if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1391 		hdev->claimed |= HID_CLAIMED_HIDRAW;
1392 
1393 	/* Drivers with the ->raw_event callback set are not required to connect
1394 	 * to any other listener. */
1395 	if (!hdev->claimed && !hdev->driver->raw_event) {
1396 		hid_err(hdev, "device has no listeners, quitting\n");
1397 		return -ENODEV;
1398 	}
1399 
1400 	if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1401 			(connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1402 		hdev->ff_init(hdev);
1403 
1404 	len = 0;
1405 	if (hdev->claimed & HID_CLAIMED_INPUT)
1406 		len += sprintf(buf + len, "input");
1407 	if (hdev->claimed & HID_CLAIMED_HIDDEV)
1408 		len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1409 				hdev->minor);
1410 	if (hdev->claimed & HID_CLAIMED_HIDRAW)
1411 		len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1412 				((struct hidraw *)hdev->hidraw)->minor);
1413 
1414 	type = "Device";
1415 	for (i = 0; i < hdev->maxcollection; i++) {
1416 		struct hid_collection *col = &hdev->collection[i];
1417 		if (col->type == HID_COLLECTION_APPLICATION &&
1418 		   (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1419 		   (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1420 			type = types[col->usage & 0xffff];
1421 			break;
1422 		}
1423 	}
1424 
1425 	switch (hdev->bus) {
1426 	case BUS_USB:
1427 		bus = "USB";
1428 		break;
1429 	case BUS_BLUETOOTH:
1430 		bus = "BLUETOOTH";
1431 		break;
1432 	default:
1433 		bus = "<UNKNOWN>";
1434 	}
1435 
1436 	ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1437 	if (ret)
1438 		hid_warn(hdev,
1439 			 "can't create sysfs report descriptor attribute err: %d\n", ret);
1440 
1441 	hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1442 		 buf, bus, hdev->version >> 8, hdev->version & 0xff,
1443 		 type, hdev->name, hdev->phys);
1444 
1445 	return 0;
1446 }
1447 EXPORT_SYMBOL_GPL(hid_connect);
1448 
1449 void hid_disconnect(struct hid_device *hdev)
1450 {
1451 	device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1452 	if (hdev->claimed & HID_CLAIMED_INPUT)
1453 		hidinput_disconnect(hdev);
1454 	if (hdev->claimed & HID_CLAIMED_HIDDEV)
1455 		hdev->hiddev_disconnect(hdev);
1456 	if (hdev->claimed & HID_CLAIMED_HIDRAW)
1457 		hidraw_disconnect(hdev);
1458 }
1459 EXPORT_SYMBOL_GPL(hid_disconnect);
1460 
1461 /*
1462  * A list of devices for which there is a specialized driver on HID bus.
1463  *
1464  * Please note that for multitouch devices (driven by hid-multitouch driver),
1465  * there is a proper autodetection and autoloading in place (based on presence
1466  * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1467  * as we are doing the right thing in hid_scan_usage().
1468  */
1469 static const struct hid_device_id hid_have_special_driver[] = {
1470 	{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1471 	{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1472 	{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1473 	{ HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1474 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) },
1475 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1476 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1477 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1478 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1479 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1480 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1481 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1482 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1483 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1484 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1485 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1486 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1487 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1488 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1489 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1490 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1491 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1492 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1493 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1494 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1495 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1496 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1497 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1498 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1499 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1500 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1501 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1502 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1503 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1504 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1505 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1506 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1507 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1508 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1509 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1510 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1511 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1512 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1513 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1514 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1515 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1516 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1517 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1518 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1519 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1520 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1521 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1522 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1523 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1524 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1525 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1526 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1527 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1528 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1529 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1530 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1531 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1532 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1533 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1534 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1535 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1536 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1537 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1538 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1539 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1540 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1541 	{ HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1542 	{ HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1543 	{ HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1544 	{ HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1545 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1546 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1547 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1548 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1549 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1550 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1551 	{ HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1552 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1553 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1554 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1555 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1556 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1557 	{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1558 	{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1559 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1560 	{ HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1561 	{ HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1562 	{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1563 	{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1564 	{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1565 	{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1566 	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1567 	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1568 	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1569 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1570 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1571 	{ HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8086, USB_DEVICE_ID_SENSOR_HUB_1020) },
1572 	{ HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8086, USB_DEVICE_ID_SENSOR_HUB_09FA) },
1573 	{ HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8087, USB_DEVICE_ID_SENSOR_HUB_1020) },
1574 	{ HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8087, USB_DEVICE_ID_SENSOR_HUB_09FA) },
1575 	{ HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1576 	{ HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1577 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1578 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1579 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1580 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1581 	{ HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1582 	{ HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1583 #if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
1584 	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1585 #endif
1586 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1587 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1588 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1589 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1590 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1591 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1592 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1593 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1594 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1595 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1596 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1597 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1598 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1599 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1600 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1601 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1602 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1603 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1604 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1605 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1606 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1607 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1608 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1609 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1610 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1611 #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1612 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1613 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1614 #endif
1615 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1616 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1617 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1618 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1619 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1620 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1621 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1622 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1623 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1624 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1625 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1626 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1627 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1628 	{ HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1629 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1630 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1631 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1632 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1633 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1634 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1635 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1636 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1637 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1638 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1639 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1640 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1641 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1642 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1643 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1644 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1645 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1646 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1647 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1648 	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1649 	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1650 	{ HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1651 	{ HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1652 #if IS_ENABLED(CONFIG_HID_ROCCAT)
1653 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1654 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1655 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1656 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1657 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1658 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1659 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1660 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1661 #endif
1662 	{ HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1663 	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1664 	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1665 	{ HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1666 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1667 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1668 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1669 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1670 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1671 	{ HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1672 	{ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, USB_DEVICE_ID_SENSOR_HUB_7014) },
1673 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1674 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1675 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1676 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1677 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1678 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1679 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1680 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1681 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1682 	{ HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1683 	{ HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1684 	{ HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1685 	{ HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1686 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1687 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1688 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1689 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1690 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1691 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1692 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1693 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1694 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1695 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1696 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1697 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1698 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1699 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1700 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
1701 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1702 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1703 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1704 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1705 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1706 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1707 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1708 	{ HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1709 	{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1710 	{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1711 	{ HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1712 
1713 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1714 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1715 	{ }
1716 };
1717 
1718 struct hid_dynid {
1719 	struct list_head list;
1720 	struct hid_device_id id;
1721 };
1722 
1723 /**
1724  * store_new_id - add a new HID device ID to this driver and re-probe devices
1725  * @driver: target device driver
1726  * @buf: buffer for scanning device ID data
1727  * @count: input size
1728  *
1729  * Adds a new dynamic hid device ID to this driver,
1730  * and causes the driver to probe for all devices again.
1731  */
1732 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1733 		size_t count)
1734 {
1735 	struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1736 	struct hid_dynid *dynid;
1737 	__u32 bus, vendor, product;
1738 	unsigned long driver_data = 0;
1739 	int ret;
1740 
1741 	ret = sscanf(buf, "%x %x %x %lx",
1742 			&bus, &vendor, &product, &driver_data);
1743 	if (ret < 3)
1744 		return -EINVAL;
1745 
1746 	dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1747 	if (!dynid)
1748 		return -ENOMEM;
1749 
1750 	dynid->id.bus = bus;
1751 	dynid->id.group = HID_GROUP_ANY;
1752 	dynid->id.vendor = vendor;
1753 	dynid->id.product = product;
1754 	dynid->id.driver_data = driver_data;
1755 
1756 	spin_lock(&hdrv->dyn_lock);
1757 	list_add_tail(&dynid->list, &hdrv->dyn_list);
1758 	spin_unlock(&hdrv->dyn_lock);
1759 
1760 	ret = driver_attach(&hdrv->driver);
1761 
1762 	return ret ? : count;
1763 }
1764 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1765 
1766 static void hid_free_dynids(struct hid_driver *hdrv)
1767 {
1768 	struct hid_dynid *dynid, *n;
1769 
1770 	spin_lock(&hdrv->dyn_lock);
1771 	list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1772 		list_del(&dynid->list);
1773 		kfree(dynid);
1774 	}
1775 	spin_unlock(&hdrv->dyn_lock);
1776 }
1777 
1778 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1779 		struct hid_driver *hdrv)
1780 {
1781 	struct hid_dynid *dynid;
1782 
1783 	spin_lock(&hdrv->dyn_lock);
1784 	list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1785 		if (hid_match_one_id(hdev, &dynid->id)) {
1786 			spin_unlock(&hdrv->dyn_lock);
1787 			return &dynid->id;
1788 		}
1789 	}
1790 	spin_unlock(&hdrv->dyn_lock);
1791 
1792 	return hid_match_id(hdev, hdrv->id_table);
1793 }
1794 
1795 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1796 {
1797 	struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1798 	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1799 
1800 	return hid_match_device(hdev, hdrv) != NULL;
1801 }
1802 
1803 static int hid_device_probe(struct device *dev)
1804 {
1805 	struct hid_driver *hdrv = container_of(dev->driver,
1806 			struct hid_driver, driver);
1807 	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1808 	const struct hid_device_id *id;
1809 	int ret = 0;
1810 
1811 	if (down_interruptible(&hdev->driver_lock))
1812 		return -EINTR;
1813 
1814 	if (!hdev->driver) {
1815 		id = hid_match_device(hdev, hdrv);
1816 		if (id == NULL) {
1817 			ret = -ENODEV;
1818 			goto unlock;
1819 		}
1820 
1821 		hdev->driver = hdrv;
1822 		if (hdrv->probe) {
1823 			ret = hdrv->probe(hdev, id);
1824 		} else { /* default probe */
1825 			ret = hid_open_report(hdev);
1826 			if (!ret)
1827 				ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1828 		}
1829 		if (ret) {
1830 			hid_close_report(hdev);
1831 			hdev->driver = NULL;
1832 		}
1833 	}
1834 unlock:
1835 	up(&hdev->driver_lock);
1836 	return ret;
1837 }
1838 
1839 static int hid_device_remove(struct device *dev)
1840 {
1841 	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1842 	struct hid_driver *hdrv;
1843 
1844 	if (down_interruptible(&hdev->driver_lock))
1845 		return -EINTR;
1846 
1847 	hdrv = hdev->driver;
1848 	if (hdrv) {
1849 		if (hdrv->remove)
1850 			hdrv->remove(hdev);
1851 		else /* default remove */
1852 			hid_hw_stop(hdev);
1853 		hid_close_report(hdev);
1854 		hdev->driver = NULL;
1855 	}
1856 
1857 	up(&hdev->driver_lock);
1858 	return 0;
1859 }
1860 
1861 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
1862 			     char *buf)
1863 {
1864 	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1865 	int len;
1866 
1867 	len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
1868 		       hdev->bus, hdev->group, hdev->vendor, hdev->product);
1869 
1870 	return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
1871 }
1872 
1873 static struct device_attribute hid_dev_attrs[] = {
1874 	__ATTR_RO(modalias),
1875 	__ATTR_NULL,
1876 };
1877 
1878 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1879 {
1880 	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1881 
1882 	if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
1883 			hdev->bus, hdev->vendor, hdev->product))
1884 		return -ENOMEM;
1885 
1886 	if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
1887 		return -ENOMEM;
1888 
1889 	if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
1890 		return -ENOMEM;
1891 
1892 	if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
1893 		return -ENOMEM;
1894 
1895 	if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
1896 			   hdev->bus, hdev->group, hdev->vendor, hdev->product))
1897 		return -ENOMEM;
1898 
1899 	return 0;
1900 }
1901 
1902 static struct bus_type hid_bus_type = {
1903 	.name		= "hid",
1904 	.dev_attrs	= hid_dev_attrs,
1905 	.match		= hid_bus_match,
1906 	.probe		= hid_device_probe,
1907 	.remove		= hid_device_remove,
1908 	.uevent		= hid_uevent,
1909 };
1910 
1911 /* a list of devices that shouldn't be handled by HID core at all */
1912 static const struct hid_device_id hid_ignore_list[] = {
1913 	{ HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
1914 	{ HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
1915 	{ HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
1916 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
1917 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
1918 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
1919 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
1920 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
1921 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
1922 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
1923 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
1924 	{ HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
1925 	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
1926 	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
1927 	{ HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
1928 	{ HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
1929 	{ HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
1930 	{ HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
1931 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
1932 	{ HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
1933 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
1934 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
1935 	{ HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
1936 	{ HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
1937 	{ HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
1938 	{ HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
1939 	{ HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
1940 	{ HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
1941 	{ HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
1942 	{ HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
1943 	{ HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
1944 	{ HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
1945 	{ HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
1946 	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
1947 	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
1948 	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
1949 	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
1950 	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
1951 	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
1952 	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
1953 	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
1954 	{ HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
1955 	{ HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
1956 	{ HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
1957 	{ HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
1958 	{ HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
1959 	{ HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
1960 	{ HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
1961 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
1962 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
1963 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
1964 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
1965 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
1966 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
1967 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
1968 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
1969 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
1970 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
1971 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
1972 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
1973 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
1974 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
1975 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
1976 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
1977 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
1978 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
1979 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
1980 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
1981 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
1982 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
1983 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
1984 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
1985 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
1986 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
1987 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
1988 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
1989 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
1990 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
1991 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
1992 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
1993 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
1994 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
1995 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
1996 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
1997 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
1998 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
1999 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2000 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2001 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2002 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2003 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2004 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2005 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2006 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2007 	{ HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2008 	{ HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2009 	{ HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2010 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2011 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2012 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2013 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2014 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2015 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2016 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2017 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2018 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2019 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2020 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2021 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2022 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2023 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2024 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2025 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2026 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2027 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2028 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2029 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2030 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2031 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2032 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2033 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2034 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2035 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2036 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2037 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2038 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2039 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2040 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2041 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2042 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2043 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2044 	{ HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2045 	{ HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2046 	{ HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2047 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2048 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2049 	{ HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2050 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2051 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2052 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2053 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2054 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2055 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2056 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2057 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2058 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2059 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2060 	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2061 	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2062 	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2063 	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2064 	{ HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2065 	{ HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2066 #if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2067 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2068 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2069 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2070 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2071 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2072 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2073 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2074 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2075 #endif
2076 	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2077 	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2078 	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2079 	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2080 	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2081 	{ HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
2082 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2083 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2084 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2085 	{ HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2086 	{ }
2087 };
2088 
2089 /**
2090  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2091  *
2092  * There are composite devices for which we want to ignore only a certain
2093  * interface. This is a list of devices for which only the mouse interface will
2094  * be ignored. This allows a dedicated driver to take care of the interface.
2095  */
2096 static const struct hid_device_id hid_mouse_ignore_list[] = {
2097 	/* appletouch driver */
2098 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2099 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2100 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2101 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2102 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2103 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2104 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2105 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2106 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2107 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2108 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2109 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2110 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2111 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2112 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2113 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2114 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2115 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2116 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2117 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2118 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2119 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2120 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2121 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2122 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2123 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2124 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2125 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2126 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2127 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2128 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2129 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2130 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2131 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2132 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2133 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2134 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2135 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2136 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2137 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2138 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2139 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2140 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2141 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2142 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2143 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2144 	{ }
2145 };
2146 
2147 static bool hid_ignore(struct hid_device *hdev)
2148 {
2149 	switch (hdev->vendor) {
2150 	case USB_VENDOR_ID_CODEMERCS:
2151 		/* ignore all Code Mercenaries IOWarrior devices */
2152 		if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2153 				hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2154 			return true;
2155 		break;
2156 	case USB_VENDOR_ID_LOGITECH:
2157 		if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2158 				hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2159 			return true;
2160 		/*
2161 		 * The Keene FM transmitter USB device has the same USB ID as
2162 		 * the Logitech AudioHub Speaker, but it should ignore the hid.
2163 		 * Check if the name is that of the Keene device.
2164 		 * For reference: the name of the AudioHub is
2165 		 * "HOLTEK  AudioHub Speaker".
2166 		 */
2167 		if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2168 			!strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2169 				return true;
2170 		break;
2171 	case USB_VENDOR_ID_SOUNDGRAPH:
2172 		if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2173 		    hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2174 			return true;
2175 		break;
2176 	case USB_VENDOR_ID_HANWANG:
2177 		if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2178 		    hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2179 			return true;
2180 		break;
2181 	case USB_VENDOR_ID_JESS:
2182 		if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2183 				hdev->type == HID_TYPE_USBNONE)
2184 			return true;
2185 	break;
2186 	}
2187 
2188 	if (hdev->type == HID_TYPE_USBMOUSE &&
2189 			hid_match_id(hdev, hid_mouse_ignore_list))
2190 		return true;
2191 
2192 	return !!hid_match_id(hdev, hid_ignore_list);
2193 }
2194 
2195 int hid_add_device(struct hid_device *hdev)
2196 {
2197 	static atomic_t id = ATOMIC_INIT(0);
2198 	int ret;
2199 
2200 	if (WARN_ON(hdev->status & HID_STAT_ADDED))
2201 		return -EBUSY;
2202 
2203 	/* we need to kill them here, otherwise they will stay allocated to
2204 	 * wait for coming driver */
2205 	if (!(hdev->quirks & HID_QUIRK_NO_IGNORE)
2206             && (hid_ignore(hdev) || (hdev->quirks & HID_QUIRK_IGNORE)))
2207 		return -ENODEV;
2208 
2209 	/*
2210 	 * Read the device report descriptor once and use as template
2211 	 * for the driver-specific modifications.
2212 	 */
2213 	ret = hdev->ll_driver->parse(hdev);
2214 	if (ret)
2215 		return ret;
2216 	if (!hdev->dev_rdesc)
2217 		return -ENODEV;
2218 
2219 	/*
2220 	 * Scan generic devices for group information
2221 	 */
2222 	if (hid_ignore_special_drivers ||
2223 	    !hid_match_id(hdev, hid_have_special_driver)) {
2224 		ret = hid_scan_report(hdev);
2225 		if (ret)
2226 			hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2227 	}
2228 
2229 	/* XXX hack, any other cleaner solution after the driver core
2230 	 * is converted to allow more than 20 bytes as the device name? */
2231 	dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2232 		     hdev->vendor, hdev->product, atomic_inc_return(&id));
2233 
2234 	hid_debug_register(hdev, dev_name(&hdev->dev));
2235 	ret = device_add(&hdev->dev);
2236 	if (!ret)
2237 		hdev->status |= HID_STAT_ADDED;
2238 	else
2239 		hid_debug_unregister(hdev);
2240 
2241 	return ret;
2242 }
2243 EXPORT_SYMBOL_GPL(hid_add_device);
2244 
2245 /**
2246  * hid_allocate_device - allocate new hid device descriptor
2247  *
2248  * Allocate and initialize hid device, so that hid_destroy_device might be
2249  * used to free it.
2250  *
2251  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2252  * error value.
2253  */
2254 struct hid_device *hid_allocate_device(void)
2255 {
2256 	struct hid_device *hdev;
2257 	int ret = -ENOMEM;
2258 
2259 	hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2260 	if (hdev == NULL)
2261 		return ERR_PTR(ret);
2262 
2263 	device_initialize(&hdev->dev);
2264 	hdev->dev.release = hid_device_release;
2265 	hdev->dev.bus = &hid_bus_type;
2266 
2267 	hid_close_report(hdev);
2268 
2269 	init_waitqueue_head(&hdev->debug_wait);
2270 	INIT_LIST_HEAD(&hdev->debug_list);
2271 	sema_init(&hdev->driver_lock, 1);
2272 
2273 	return hdev;
2274 }
2275 EXPORT_SYMBOL_GPL(hid_allocate_device);
2276 
2277 static void hid_remove_device(struct hid_device *hdev)
2278 {
2279 	if (hdev->status & HID_STAT_ADDED) {
2280 		device_del(&hdev->dev);
2281 		hid_debug_unregister(hdev);
2282 		hdev->status &= ~HID_STAT_ADDED;
2283 	}
2284 	kfree(hdev->dev_rdesc);
2285 	hdev->dev_rdesc = NULL;
2286 	hdev->dev_rsize = 0;
2287 }
2288 
2289 /**
2290  * hid_destroy_device - free previously allocated device
2291  *
2292  * @hdev: hid device
2293  *
2294  * If you allocate hid_device through hid_allocate_device, you should ever
2295  * free by this function.
2296  */
2297 void hid_destroy_device(struct hid_device *hdev)
2298 {
2299 	hid_remove_device(hdev);
2300 	put_device(&hdev->dev);
2301 }
2302 EXPORT_SYMBOL_GPL(hid_destroy_device);
2303 
2304 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2305 		const char *mod_name)
2306 {
2307 	int ret;
2308 
2309 	hdrv->driver.name = hdrv->name;
2310 	hdrv->driver.bus = &hid_bus_type;
2311 	hdrv->driver.owner = owner;
2312 	hdrv->driver.mod_name = mod_name;
2313 
2314 	INIT_LIST_HEAD(&hdrv->dyn_list);
2315 	spin_lock_init(&hdrv->dyn_lock);
2316 
2317 	ret = driver_register(&hdrv->driver);
2318 	if (ret)
2319 		return ret;
2320 
2321 	ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2322 	if (ret)
2323 		driver_unregister(&hdrv->driver);
2324 
2325 	return ret;
2326 }
2327 EXPORT_SYMBOL_GPL(__hid_register_driver);
2328 
2329 void hid_unregister_driver(struct hid_driver *hdrv)
2330 {
2331 	driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2332 	driver_unregister(&hdrv->driver);
2333 	hid_free_dynids(hdrv);
2334 }
2335 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2336 
2337 int hid_check_keys_pressed(struct hid_device *hid)
2338 {
2339 	struct hid_input *hidinput;
2340 	int i;
2341 
2342 	if (!(hid->claimed & HID_CLAIMED_INPUT))
2343 		return 0;
2344 
2345 	list_for_each_entry(hidinput, &hid->inputs, list) {
2346 		for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2347 			if (hidinput->input->key[i])
2348 				return 1;
2349 	}
2350 
2351 	return 0;
2352 }
2353 
2354 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2355 
2356 static int __init hid_init(void)
2357 {
2358 	int ret;
2359 
2360 	if (hid_debug)
2361 		pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2362 			"debugfs is now used for inspecting the device (report descriptor, reports)\n");
2363 
2364 	ret = bus_register(&hid_bus_type);
2365 	if (ret) {
2366 		pr_err("can't register hid bus\n");
2367 		goto err;
2368 	}
2369 
2370 	ret = hidraw_init();
2371 	if (ret)
2372 		goto err_bus;
2373 
2374 	hid_debug_init();
2375 
2376 	return 0;
2377 err_bus:
2378 	bus_unregister(&hid_bus_type);
2379 err:
2380 	return ret;
2381 }
2382 
2383 static void __exit hid_exit(void)
2384 {
2385 	hid_debug_exit();
2386 	hidraw_exit();
2387 	bus_unregister(&hid_bus_type);
2388 }
2389 
2390 module_init(hid_init);
2391 module_exit(hid_exit);
2392 
2393 MODULE_AUTHOR("Andreas Gal");
2394 MODULE_AUTHOR("Vojtech Pavlik");
2395 MODULE_AUTHOR("Jiri Kosina");
2396 MODULE_LICENSE(DRIVER_LICENSE);
2397 
2398