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[linux-3.10.git] / drivers / hid / hid-core.c
1 /*
2  *  HID support for Linux
3  *
4  *  Copyright (c) 1999 Andreas Gal
5  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
6  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
7  *  Copyright (c) 2006-2012 Jiri Kosina
8  */
9
10 /*
11  * This program is free software; you can redistribute it and/or modify it
12  * under the terms of the GNU General Public License as published by the Free
13  * Software Foundation; either version 2 of the License, or (at your option)
14  * any later version.
15  */
16
17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18
19 #include <linux/module.h>
20 #include <linux/slab.h>
21 #include <linux/init.h>
22 #include <linux/kernel.h>
23 #include <linux/list.h>
24 #include <linux/mm.h>
25 #include <linux/spinlock.h>
26 #include <asm/unaligned.h>
27 #include <asm/byteorder.h>
28 #include <linux/input.h>
29 #include <linux/wait.h>
30 #include <linux/vmalloc.h>
31 #include <linux/sched.h>
32 #include <linux/semaphore.h>
33
34 #include <linux/hid.h>
35 #include <linux/hiddev.h>
36 #include <linux/hid-debug.h>
37 #include <linux/hidraw.h>
38
39 #include "hid-ids.h"
40
41 /*
42  * Version Information
43  */
44
45 #define DRIVER_DESC "HID core driver"
46 #define DRIVER_LICENSE "GPL"
47
48 int hid_debug = 0;
49 module_param_named(debug, hid_debug, int, 0600);
50 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
51 EXPORT_SYMBOL_GPL(hid_debug);
52
53 static int hid_ignore_special_drivers = 0;
54 module_param_named(ignore_special_drivers, hid_ignore_special_drivers, int, 0600);
55 MODULE_PARM_DESC(debug, "Ignore any special drivers and handle all devices by generic driver");
56
57 /*
58  * Register a new report for a device.
59  */
60
61 struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
62 {
63         struct hid_report_enum *report_enum = device->report_enum + type;
64         struct hid_report *report;
65
66         if (id >= HID_MAX_IDS)
67                 return NULL;
68         if (report_enum->report_id_hash[id])
69                 return report_enum->report_id_hash[id];
70
71         report = kzalloc(sizeof(struct hid_report), GFP_KERNEL);
72         if (!report)
73                 return NULL;
74
75         if (id != 0)
76                 report_enum->numbered = 1;
77
78         report->id = id;
79         report->type = type;
80         report->size = 0;
81         report->device = device;
82         report_enum->report_id_hash[id] = report;
83
84         list_add_tail(&report->list, &report_enum->report_list);
85
86         return report;
87 }
88 EXPORT_SYMBOL_GPL(hid_register_report);
89
90 /*
91  * Register a new field for this report.
92  */
93
94 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
95 {
96         struct hid_field *field;
97
98         if (report->maxfield == HID_MAX_FIELDS) {
99                 hid_err(report->device, "too many fields in report\n");
100                 return NULL;
101         }
102
103         field = kzalloc((sizeof(struct hid_field) +
104                          usages * sizeof(struct hid_usage) +
105                          values * sizeof(unsigned)), GFP_KERNEL);
106         if (!field)
107                 return NULL;
108
109         field->index = report->maxfield++;
110         report->field[field->index] = field;
111         field->usage = (struct hid_usage *)(field + 1);
112         field->value = (s32 *)(field->usage + usages);
113         field->report = report;
114
115         return field;
116 }
117
118 /*
119  * Open a collection. The type/usage is pushed on the stack.
120  */
121
122 static int open_collection(struct hid_parser *parser, unsigned type)
123 {
124         struct hid_collection *collection;
125         unsigned usage;
126
127         usage = parser->local.usage[0];
128
129         if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
130                 hid_err(parser->device, "collection stack overflow\n");
131                 return -EINVAL;
132         }
133
134         if (parser->device->maxcollection == parser->device->collection_size) {
135                 collection = kmalloc(sizeof(struct hid_collection) *
136                                 parser->device->collection_size * 2, GFP_KERNEL);
137                 if (collection == NULL) {
138                         hid_err(parser->device, "failed to reallocate collection array\n");
139                         return -ENOMEM;
140                 }
141                 memcpy(collection, parser->device->collection,
142                         sizeof(struct hid_collection) *
143                         parser->device->collection_size);
144                 memset(collection + parser->device->collection_size, 0,
145                         sizeof(struct hid_collection) *
146                         parser->device->collection_size);
147                 kfree(parser->device->collection);
148                 parser->device->collection = collection;
149                 parser->device->collection_size *= 2;
150         }
151
152         parser->collection_stack[parser->collection_stack_ptr++] =
153                 parser->device->maxcollection;
154
155         collection = parser->device->collection +
156                 parser->device->maxcollection++;
157         collection->type = type;
158         collection->usage = usage;
159         collection->level = parser->collection_stack_ptr - 1;
160
161         if (type == HID_COLLECTION_APPLICATION)
162                 parser->device->maxapplication++;
163
164         return 0;
165 }
166
167 /*
168  * Close a collection.
169  */
170
171 static int close_collection(struct hid_parser *parser)
172 {
173         if (!parser->collection_stack_ptr) {
174                 hid_err(parser->device, "collection stack underflow\n");
175                 return -EINVAL;
176         }
177         parser->collection_stack_ptr--;
178         return 0;
179 }
180
181 /*
182  * Climb up the stack, search for the specified collection type
183  * and return the usage.
184  */
185
186 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
187 {
188         struct hid_collection *collection = parser->device->collection;
189         int n;
190
191         for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
192                 unsigned index = parser->collection_stack[n];
193                 if (collection[index].type == type)
194                         return collection[index].usage;
195         }
196         return 0; /* we know nothing about this usage type */
197 }
198
199 /*
200  * Add a usage to the temporary parser table.
201  */
202
203 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
204 {
205         if (parser->local.usage_index >= HID_MAX_USAGES) {
206                 hid_err(parser->device, "usage index exceeded\n");
207                 return -1;
208         }
209         parser->local.usage[parser->local.usage_index] = usage;
210         parser->local.collection_index[parser->local.usage_index] =
211                 parser->collection_stack_ptr ?
212                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
213         parser->local.usage_index++;
214         return 0;
215 }
216
217 /*
218  * Register a new field for this report.
219  */
220
221 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
222 {
223         struct hid_report *report;
224         struct hid_field *field;
225         unsigned usages;
226         unsigned offset;
227         unsigned i;
228
229         report = hid_register_report(parser->device, report_type, parser->global.report_id);
230         if (!report) {
231                 hid_err(parser->device, "hid_register_report failed\n");
232                 return -1;
233         }
234
235         /* Handle both signed and unsigned cases properly */
236         if ((parser->global.logical_minimum < 0 &&
237                 parser->global.logical_maximum <
238                 parser->global.logical_minimum) ||
239                 (parser->global.logical_minimum >= 0 &&
240                 (__u32)parser->global.logical_maximum <
241                 (__u32)parser->global.logical_minimum)) {
242                 dbg_hid("logical range invalid 0x%x 0x%x\n",
243                         parser->global.logical_minimum,
244                         parser->global.logical_maximum);
245                 return -1;
246         }
247
248         offset = report->size;
249         report->size += parser->global.report_size * parser->global.report_count;
250
251         if (!parser->local.usage_index) /* Ignore padding fields */
252                 return 0;
253
254         usages = max_t(unsigned, parser->local.usage_index,
255                                  parser->global.report_count);
256
257         field = hid_register_field(report, usages, parser->global.report_count);
258         if (!field)
259                 return 0;
260
261         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
262         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
263         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
264
265         for (i = 0; i < usages; i++) {
266                 unsigned j = i;
267                 /* Duplicate the last usage we parsed if we have excess values */
268                 if (i >= parser->local.usage_index)
269                         j = parser->local.usage_index - 1;
270                 field->usage[i].hid = parser->local.usage[j];
271                 field->usage[i].collection_index =
272                         parser->local.collection_index[j];
273                 field->usage[i].usage_index = i;
274         }
275
276         field->maxusage = usages;
277         field->flags = flags;
278         field->report_offset = offset;
279         field->report_type = report_type;
280         field->report_size = parser->global.report_size;
281         field->report_count = parser->global.report_count;
282         field->logical_minimum = parser->global.logical_minimum;
283         field->logical_maximum = parser->global.logical_maximum;
284         field->physical_minimum = parser->global.physical_minimum;
285         field->physical_maximum = parser->global.physical_maximum;
286         field->unit_exponent = parser->global.unit_exponent;
287         field->unit = parser->global.unit;
288
289         return 0;
290 }
291
292 /*
293  * Read data value from item.
294  */
295
296 static u32 item_udata(struct hid_item *item)
297 {
298         switch (item->size) {
299         case 1: return item->data.u8;
300         case 2: return item->data.u16;
301         case 4: return item->data.u32;
302         }
303         return 0;
304 }
305
306 static s32 item_sdata(struct hid_item *item)
307 {
308         switch (item->size) {
309         case 1: return item->data.s8;
310         case 2: return item->data.s16;
311         case 4: return item->data.s32;
312         }
313         return 0;
314 }
315
316 /*
317  * Process a global item.
318  */
319
320 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
321 {
322         __u32 raw_value;
323         switch (item->tag) {
324         case HID_GLOBAL_ITEM_TAG_PUSH:
325
326                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
327                         hid_err(parser->device, "global environment stack overflow\n");
328                         return -1;
329                 }
330
331                 memcpy(parser->global_stack + parser->global_stack_ptr++,
332                         &parser->global, sizeof(struct hid_global));
333                 return 0;
334
335         case HID_GLOBAL_ITEM_TAG_POP:
336
337                 if (!parser->global_stack_ptr) {
338                         hid_err(parser->device, "global environment stack underflow\n");
339                         return -1;
340                 }
341
342                 memcpy(&parser->global, parser->global_stack +
343                         --parser->global_stack_ptr, sizeof(struct hid_global));
344                 return 0;
345
346         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
347                 parser->global.usage_page = item_udata(item);
348                 return 0;
349
350         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
351                 parser->global.logical_minimum = item_sdata(item);
352                 return 0;
353
354         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
355                 if (parser->global.logical_minimum < 0)
356                         parser->global.logical_maximum = item_sdata(item);
357                 else
358                         parser->global.logical_maximum = item_udata(item);
359                 return 0;
360
361         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
362                 parser->global.physical_minimum = item_sdata(item);
363                 return 0;
364
365         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
366                 if (parser->global.physical_minimum < 0)
367                         parser->global.physical_maximum = item_sdata(item);
368                 else
369                         parser->global.physical_maximum = item_udata(item);
370                 return 0;
371
372         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
373                 /* Units exponent negative numbers are given through a
374                  * two's complement.
375                  * See "6.2.2.7 Global Items" for more information. */
376                 raw_value = item_udata(item);
377                 if (!(raw_value & 0xfffffff0))
378                         parser->global.unit_exponent = hid_snto32(raw_value, 4);
379                 else
380                         parser->global.unit_exponent = raw_value;
381                 return 0;
382
383         case HID_GLOBAL_ITEM_TAG_UNIT:
384                 parser->global.unit = item_udata(item);
385                 return 0;
386
387         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
388                 parser->global.report_size = item_udata(item);
389                 if (parser->global.report_size > 128) {
390                         hid_err(parser->device, "invalid report_size %d\n",
391                                         parser->global.report_size);
392                         return -1;
393                 }
394                 return 0;
395
396         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
397                 parser->global.report_count = item_udata(item);
398                 if (parser->global.report_count > HID_MAX_USAGES) {
399                         hid_err(parser->device, "invalid report_count %d\n",
400                                         parser->global.report_count);
401                         return -1;
402                 }
403                 return 0;
404
405         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
406                 parser->global.report_id = item_udata(item);
407                 if (parser->global.report_id == 0 ||
408                     parser->global.report_id >= HID_MAX_IDS) {
409                         hid_err(parser->device, "report_id %u is invalid\n",
410                                 parser->global.report_id);
411                         return -1;
412                 }
413                 return 0;
414
415         default:
416                 hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
417                 return -1;
418         }
419 }
420
421 /*
422  * Process a local item.
423  */
424
425 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
426 {
427         __u32 data;
428         unsigned n;
429
430         data = item_udata(item);
431
432         switch (item->tag) {
433         case HID_LOCAL_ITEM_TAG_DELIMITER:
434
435                 if (data) {
436                         /*
437                          * We treat items before the first delimiter
438                          * as global to all usage sets (branch 0).
439                          * In the moment we process only these global
440                          * items and the first delimiter set.
441                          */
442                         if (parser->local.delimiter_depth != 0) {
443                                 hid_err(parser->device, "nested delimiters\n");
444                                 return -1;
445                         }
446                         parser->local.delimiter_depth++;
447                         parser->local.delimiter_branch++;
448                 } else {
449                         if (parser->local.delimiter_depth < 1) {
450                                 hid_err(parser->device, "bogus close delimiter\n");
451                                 return -1;
452                         }
453                         parser->local.delimiter_depth--;
454                 }
455                 return 1;
456
457         case HID_LOCAL_ITEM_TAG_USAGE:
458
459                 if (parser->local.delimiter_branch > 1) {
460                         dbg_hid("alternative usage ignored\n");
461                         return 0;
462                 }
463
464                 if (item->size <= 2)
465                         data = (parser->global.usage_page << 16) + data;
466
467                 return hid_add_usage(parser, data);
468
469         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
470
471                 if (parser->local.delimiter_branch > 1) {
472                         dbg_hid("alternative usage ignored\n");
473                         return 0;
474                 }
475
476                 if (item->size <= 2)
477                         data = (parser->global.usage_page << 16) + data;
478
479                 parser->local.usage_minimum = data;
480                 return 0;
481
482         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
483
484                 if (parser->local.delimiter_branch > 1) {
485                         dbg_hid("alternative usage ignored\n");
486                         return 0;
487                 }
488
489                 if (item->size <= 2)
490                         data = (parser->global.usage_page << 16) + data;
491
492                 for (n = parser->local.usage_minimum; n <= data; n++)
493                         if (hid_add_usage(parser, n)) {
494                                 dbg_hid("hid_add_usage failed\n");
495                                 return -1;
496                         }
497                 return 0;
498
499         default:
500
501                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
502                 return 0;
503         }
504         return 0;
505 }
506
507 /*
508  * Process a main item.
509  */
510
511 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
512 {
513         __u32 data;
514         int ret;
515
516         data = item_udata(item);
517
518         switch (item->tag) {
519         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
520                 ret = open_collection(parser, data & 0xff);
521                 break;
522         case HID_MAIN_ITEM_TAG_END_COLLECTION:
523                 ret = close_collection(parser);
524                 break;
525         case HID_MAIN_ITEM_TAG_INPUT:
526                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
527                 break;
528         case HID_MAIN_ITEM_TAG_OUTPUT:
529                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
530                 break;
531         case HID_MAIN_ITEM_TAG_FEATURE:
532                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
533                 break;
534         default:
535                 hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
536                 ret = 0;
537         }
538
539         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
540
541         return ret;
542 }
543
544 /*
545  * Process a reserved item.
546  */
547
548 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
549 {
550         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
551         return 0;
552 }
553
554 /*
555  * Free a report and all registered fields. The field->usage and
556  * field->value table's are allocated behind the field, so we need
557  * only to free(field) itself.
558  */
559
560 static void hid_free_report(struct hid_report *report)
561 {
562         unsigned n;
563
564         for (n = 0; n < report->maxfield; n++)
565                 kfree(report->field[n]);
566         kfree(report);
567 }
568
569 /*
570  * Close report. This function returns the device
571  * state to the point prior to hid_open_report().
572  */
573 static void hid_close_report(struct hid_device *device)
574 {
575         unsigned i, j;
576
577         for (i = 0; i < HID_REPORT_TYPES; i++) {
578                 struct hid_report_enum *report_enum = device->report_enum + i;
579
580                 for (j = 0; j < HID_MAX_IDS; j++) {
581                         struct hid_report *report = report_enum->report_id_hash[j];
582                         if (report)
583                                 hid_free_report(report);
584                 }
585                 memset(report_enum, 0, sizeof(*report_enum));
586                 INIT_LIST_HEAD(&report_enum->report_list);
587         }
588
589         kfree(device->rdesc);
590         device->rdesc = NULL;
591         device->rsize = 0;
592
593         kfree(device->collection);
594         device->collection = NULL;
595         device->collection_size = 0;
596         device->maxcollection = 0;
597         device->maxapplication = 0;
598
599         device->status &= ~HID_STAT_PARSED;
600 }
601
602 /*
603  * Free a device structure, all reports, and all fields.
604  */
605
606 static void hid_device_release(struct device *dev)
607 {
608         struct hid_device *hid = container_of(dev, struct hid_device, dev);
609
610         hid_close_report(hid);
611         kfree(hid->dev_rdesc);
612         kfree(hid);
613 }
614
615 /*
616  * Fetch a report description item from the data stream. We support long
617  * items, though they are not used yet.
618  */
619
620 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
621 {
622         u8 b;
623
624         if ((end - start) <= 0)
625                 return NULL;
626
627         b = *start++;
628
629         item->type = (b >> 2) & 3;
630         item->tag  = (b >> 4) & 15;
631
632         if (item->tag == HID_ITEM_TAG_LONG) {
633
634                 item->format = HID_ITEM_FORMAT_LONG;
635
636                 if ((end - start) < 2)
637                         return NULL;
638
639                 item->size = *start++;
640                 item->tag  = *start++;
641
642                 if ((end - start) < item->size)
643                         return NULL;
644
645                 item->data.longdata = start;
646                 start += item->size;
647                 return start;
648         }
649
650         item->format = HID_ITEM_FORMAT_SHORT;
651         item->size = b & 3;
652
653         switch (item->size) {
654         case 0:
655                 return start;
656
657         case 1:
658                 if ((end - start) < 1)
659                         return NULL;
660                 item->data.u8 = *start++;
661                 return start;
662
663         case 2:
664                 if ((end - start) < 2)
665                         return NULL;
666                 item->data.u16 = get_unaligned_le16(start);
667                 start = (__u8 *)((__le16 *)start + 1);
668                 return start;
669
670         case 3:
671                 item->size++;
672                 if ((end - start) < 4)
673                         return NULL;
674                 item->data.u32 = get_unaligned_le32(start);
675                 start = (__u8 *)((__le32 *)start + 1);
676                 return start;
677         }
678
679         return NULL;
680 }
681
682 static void hid_scan_usage(struct hid_device *hid, u32 usage)
683 {
684         if (usage == HID_DG_CONTACTID)
685                 hid->group = HID_GROUP_MULTITOUCH;
686 }
687
688 /*
689  * Scan a report descriptor before the device is added to the bus.
690  * Sets device groups and other properties that determine what driver
691  * to load.
692  */
693 static int hid_scan_report(struct hid_device *hid)
694 {
695         unsigned int page = 0, delim = 0;
696         __u8 *start = hid->dev_rdesc;
697         __u8 *end = start + hid->dev_rsize;
698         unsigned int u, u_min = 0, u_max = 0;
699         struct hid_item item;
700
701         hid->group = HID_GROUP_GENERIC;
702         while ((start = fetch_item(start, end, &item)) != NULL) {
703                 if (item.format != HID_ITEM_FORMAT_SHORT)
704                         return -EINVAL;
705                 if (item.type == HID_ITEM_TYPE_GLOBAL) {
706                         if (item.tag == HID_GLOBAL_ITEM_TAG_USAGE_PAGE)
707                                 page = item_udata(&item) << 16;
708                 } else if (item.type == HID_ITEM_TYPE_LOCAL) {
709                         if (delim > 1)
710                                 break;
711                         u = item_udata(&item);
712                         if (item.size <= 2)
713                                 u += page;
714                         switch (item.tag) {
715                         case HID_LOCAL_ITEM_TAG_DELIMITER:
716                                 delim += !!u;
717                                 break;
718                         case HID_LOCAL_ITEM_TAG_USAGE:
719                                 hid_scan_usage(hid, u);
720                                 break;
721                         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
722                                 u_min = u;
723                                 break;
724                         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
725                                 u_max = u;
726                                 for (u = u_min; u <= u_max; u++)
727                                         hid_scan_usage(hid, u);
728                                 break;
729                         }
730                 } else if (page == HID_UP_SENSOR &&
731                         item.type == HID_ITEM_TYPE_MAIN &&
732                         item.tag == HID_MAIN_ITEM_TAG_BEGIN_COLLECTION &&
733                         (item_udata(&item) & 0xff) == HID_COLLECTION_PHYSICAL)
734                         hid->group = HID_GROUP_SENSOR_HUB;
735         }
736
737         return 0;
738 }
739
740 /**
741  * hid_parse_report - parse device report
742  *
743  * @device: hid device
744  * @start: report start
745  * @size: report size
746  *
747  * Allocate the device report as read by the bus driver. This function should
748  * only be called from parse() in ll drivers.
749  */
750 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
751 {
752         hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
753         if (!hid->dev_rdesc)
754                 return -ENOMEM;
755         hid->dev_rsize = size;
756         return 0;
757 }
758 EXPORT_SYMBOL_GPL(hid_parse_report);
759
760 static const char * const hid_report_names[] = {
761         "HID_INPUT_REPORT",
762         "HID_OUTPUT_REPORT",
763         "HID_FEATURE_REPORT",
764 };
765 /**
766  * hid_validate_values - validate existing device report's value indexes
767  *
768  * @device: hid device
769  * @type: which report type to examine
770  * @id: which report ID to examine (0 for first)
771  * @field_index: which report field to examine
772  * @report_counts: expected number of values
773  *
774  * Validate the number of values in a given field of a given report, after
775  * parsing.
776  */
777 struct hid_report *hid_validate_values(struct hid_device *hid,
778                                        unsigned int type, unsigned int id,
779                                        unsigned int field_index,
780                                        unsigned int report_counts)
781 {
782         struct hid_report *report;
783
784         if (type > HID_FEATURE_REPORT) {
785                 hid_err(hid, "invalid HID report type %u\n", type);
786                 return NULL;
787         }
788
789         if (id >= HID_MAX_IDS) {
790                 hid_err(hid, "invalid HID report id %u\n", id);
791                 return NULL;
792         }
793
794         /*
795          * Explicitly not using hid_get_report() here since it depends on
796          * ->numbered being checked, which may not always be the case when
797          * drivers go to access report values.
798          */
799         if (id == 0) {
800                 /*
801                  * Validating on id 0 means we should examine the first
802                  * report in the list.
803                  */
804                 report = list_entry(
805                                 hid->report_enum[type].report_list.next,
806                                 struct hid_report, list);
807         } else {
808                 report = hid->report_enum[type].report_id_hash[id];
809         }
810         if (!report) {
811                 hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
812                 return NULL;
813         }
814         if (report->maxfield <= field_index) {
815                 hid_err(hid, "not enough fields in %s %u\n",
816                         hid_report_names[type], id);
817                 return NULL;
818         }
819         if (report->field[field_index]->report_count < report_counts) {
820                 hid_err(hid, "not enough values in %s %u field %u\n",
821                         hid_report_names[type], id, field_index);
822                 return NULL;
823         }
824         return report;
825 }
826 EXPORT_SYMBOL_GPL(hid_validate_values);
827
828 /**
829  * hid_open_report - open a driver-specific device report
830  *
831  * @device: hid device
832  *
833  * Parse a report description into a hid_device structure. Reports are
834  * enumerated, fields are attached to these reports.
835  * 0 returned on success, otherwise nonzero error value.
836  *
837  * This function (or the equivalent hid_parse() macro) should only be
838  * called from probe() in drivers, before starting the device.
839  */
840 int hid_open_report(struct hid_device *device)
841 {
842         struct hid_parser *parser;
843         struct hid_item item;
844         unsigned int size;
845         __u8 *start;
846         __u8 *buf;
847         __u8 *end;
848         int ret;
849         static int (*dispatch_type[])(struct hid_parser *parser,
850                                       struct hid_item *item) = {
851                 hid_parser_main,
852                 hid_parser_global,
853                 hid_parser_local,
854                 hid_parser_reserved
855         };
856
857         if (WARN_ON(device->status & HID_STAT_PARSED))
858                 return -EBUSY;
859
860         start = device->dev_rdesc;
861         if (WARN_ON(!start))
862                 return -ENODEV;
863         size = device->dev_rsize;
864
865         buf = kmemdup(start, size, GFP_KERNEL);
866         if (buf == NULL)
867                 return -ENOMEM;
868
869         if (device->driver->report_fixup)
870                 start = device->driver->report_fixup(device, buf, &size);
871         else
872                 start = buf;
873
874         start = kmemdup(start, size, GFP_KERNEL);
875         kfree(buf);
876         if (start == NULL)
877                 return -ENOMEM;
878
879         device->rdesc = start;
880         device->rsize = size;
881
882         parser = vzalloc(sizeof(struct hid_parser));
883         if (!parser) {
884                 ret = -ENOMEM;
885                 goto err;
886         }
887
888         parser->device = device;
889
890         end = start + size;
891
892         device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
893                                      sizeof(struct hid_collection), GFP_KERNEL);
894         if (!device->collection) {
895                 ret = -ENOMEM;
896                 goto err;
897         }
898         device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
899
900         ret = -EINVAL;
901         while ((start = fetch_item(start, end, &item)) != NULL) {
902
903                 if (item.format != HID_ITEM_FORMAT_SHORT) {
904                         hid_err(device, "unexpected long global item\n");
905                         goto err;
906                 }
907
908                 if (dispatch_type[item.type](parser, &item)) {
909                         hid_err(device, "item %u %u %u %u parsing failed\n",
910                                 item.format, (unsigned)item.size,
911                                 (unsigned)item.type, (unsigned)item.tag);
912                         goto err;
913                 }
914
915                 if (start == end) {
916                         if (parser->collection_stack_ptr) {
917                                 hid_err(device, "unbalanced collection at end of report description\n");
918                                 goto err;
919                         }
920                         if (parser->local.delimiter_depth) {
921                                 hid_err(device, "unbalanced delimiter at end of report description\n");
922                                 goto err;
923                         }
924                         vfree(parser);
925                         device->status |= HID_STAT_PARSED;
926                         return 0;
927                 }
928         }
929
930         hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
931 err:
932         vfree(parser);
933         hid_close_report(device);
934         return ret;
935 }
936 EXPORT_SYMBOL_GPL(hid_open_report);
937
938 /*
939  * Convert a signed n-bit integer to signed 32-bit integer. Common
940  * cases are done through the compiler, the screwed things has to be
941  * done by hand.
942  */
943
944 static s32 snto32(__u32 value, unsigned n)
945 {
946         switch (n) {
947         case 8:  return ((__s8)value);
948         case 16: return ((__s16)value);
949         case 32: return ((__s32)value);
950         }
951         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
952 }
953
954 s32 hid_snto32(__u32 value, unsigned n)
955 {
956         return snto32(value, n);
957 }
958 EXPORT_SYMBOL_GPL(hid_snto32);
959
960 /*
961  * Convert a signed 32-bit integer to a signed n-bit integer.
962  */
963
964 static u32 s32ton(__s32 value, unsigned n)
965 {
966         s32 a = value >> (n - 1);
967         if (a && a != -1)
968                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
969         return value & ((1 << n) - 1);
970 }
971
972 /*
973  * Extract/implement a data field from/to a little endian report (bit array).
974  *
975  * Code sort-of follows HID spec:
976  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
977  *
978  * While the USB HID spec allows unlimited length bit fields in "report
979  * descriptors", most devices never use more than 16 bits.
980  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
981  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
982  */
983
984 static __u32 extract(const struct hid_device *hid, __u8 *report,
985                      unsigned offset, unsigned n)
986 {
987         u64 x;
988
989         if (n > 32)
990                 hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
991                          n, current->comm);
992
993         report += offset >> 3;  /* adjust byte index */
994         offset &= 7;            /* now only need bit offset into one byte */
995         x = get_unaligned_le64(report);
996         x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
997         return (u32) x;
998 }
999
1000 /*
1001  * "implement" : set bits in a little endian bit stream.
1002  * Same concepts as "extract" (see comments above).
1003  * The data mangled in the bit stream remains in little endian
1004  * order the whole time. It make more sense to talk about
1005  * endianness of register values by considering a register
1006  * a "cached" copy of the little endiad bit stream.
1007  */
1008 static void implement(const struct hid_device *hid, __u8 *report,
1009                       unsigned offset, unsigned n, __u32 value)
1010 {
1011         u64 x;
1012         u64 m = (1ULL << n) - 1;
1013
1014         if (n > 32)
1015                 hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
1016                          __func__, n, current->comm);
1017
1018         if (value > m)
1019                 hid_warn(hid, "%s() called with too large value %d! (%s)\n",
1020                          __func__, value, current->comm);
1021         WARN_ON(value > m);
1022         value &= m;
1023
1024         report += offset >> 3;
1025         offset &= 7;
1026
1027         x = get_unaligned_le64(report);
1028         x &= ~(m << offset);
1029         x |= ((u64)value) << offset;
1030         put_unaligned_le64(x, report);
1031 }
1032
1033 /*
1034  * Search an array for a value.
1035  */
1036
1037 static int search(__s32 *array, __s32 value, unsigned n)
1038 {
1039         while (n--) {
1040                 if (*array++ == value)
1041                         return 0;
1042         }
1043         return -1;
1044 }
1045
1046 /**
1047  * hid_match_report - check if driver's raw_event should be called
1048  *
1049  * @hid: hid device
1050  * @report_type: type to match against
1051  *
1052  * compare hid->driver->report_table->report_type to report->type
1053  */
1054 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
1055 {
1056         const struct hid_report_id *id = hid->driver->report_table;
1057
1058         if (!id) /* NULL means all */
1059                 return 1;
1060
1061         for (; id->report_type != HID_TERMINATOR; id++)
1062                 if (id->report_type == HID_ANY_ID ||
1063                                 id->report_type == report->type)
1064                         return 1;
1065         return 0;
1066 }
1067
1068 /**
1069  * hid_match_usage - check if driver's event should be called
1070  *
1071  * @hid: hid device
1072  * @usage: usage to match against
1073  *
1074  * compare hid->driver->usage_table->usage_{type,code} to
1075  * usage->usage_{type,code}
1076  */
1077 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1078 {
1079         const struct hid_usage_id *id = hid->driver->usage_table;
1080
1081         if (!id) /* NULL means all */
1082                 return 1;
1083
1084         for (; id->usage_type != HID_ANY_ID - 1; id++)
1085                 if ((id->usage_hid == HID_ANY_ID ||
1086                                 id->usage_hid == usage->hid) &&
1087                                 (id->usage_type == HID_ANY_ID ||
1088                                 id->usage_type == usage->type) &&
1089                                 (id->usage_code == HID_ANY_ID ||
1090                                  id->usage_code == usage->code))
1091                         return 1;
1092         return 0;
1093 }
1094
1095 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1096                 struct hid_usage *usage, __s32 value, int interrupt)
1097 {
1098         struct hid_driver *hdrv = hid->driver;
1099         int ret;
1100
1101         if (!list_empty(&hid->debug_list))
1102                 hid_dump_input(hid, usage, value);
1103
1104         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1105                 ret = hdrv->event(hid, field, usage, value);
1106                 if (ret != 0) {
1107                         if (ret < 0)
1108                                 hid_err(hid, "%s's event failed with %d\n",
1109                                                 hdrv->name, ret);
1110                         return;
1111                 }
1112         }
1113
1114         if (hid->claimed & HID_CLAIMED_INPUT)
1115                 hidinput_hid_event(hid, field, usage, value);
1116         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1117                 hid->hiddev_hid_event(hid, field, usage, value);
1118 }
1119
1120 /*
1121  * Analyse a received field, and fetch the data from it. The field
1122  * content is stored for next report processing (we do differential
1123  * reporting to the layer).
1124  */
1125
1126 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1127                             __u8 *data, int interrupt)
1128 {
1129         unsigned n;
1130         unsigned count = field->report_count;
1131         unsigned offset = field->report_offset;
1132         unsigned size = field->report_size;
1133         __s32 min = field->logical_minimum;
1134         __s32 max = field->logical_maximum;
1135         __s32 *value;
1136
1137         value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1138         if (!value)
1139                 return;
1140
1141         for (n = 0; n < count; n++) {
1142
1143                 value[n] = min < 0 ?
1144                         snto32(extract(hid, data, offset + n * size, size),
1145                                size) :
1146                         extract(hid, data, offset + n * size, size);
1147
1148                 /* Ignore report if ErrorRollOver */
1149                 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1150                     value[n] >= min && value[n] <= max &&
1151                     value[n] - min < field->maxusage &&
1152                     field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1153                         goto exit;
1154         }
1155
1156         for (n = 0; n < count; n++) {
1157
1158                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1159                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1160                         continue;
1161                 }
1162
1163                 if (field->value[n] >= min && field->value[n] <= max
1164                         && field->value[n] - min < field->maxusage
1165                         && field->usage[field->value[n] - min].hid
1166                         && search(value, field->value[n], count))
1167                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1168
1169                 if (value[n] >= min && value[n] <= max
1170                         && value[n] - min < field->maxusage
1171                         && field->usage[value[n] - min].hid
1172                         && search(field->value, value[n], count))
1173                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1174         }
1175
1176         memcpy(field->value, value, count * sizeof(__s32));
1177 exit:
1178         kfree(value);
1179 }
1180
1181 /*
1182  * Output the field into the report.
1183  */
1184
1185 static void hid_output_field(const struct hid_device *hid,
1186                              struct hid_field *field, __u8 *data)
1187 {
1188         unsigned count = field->report_count;
1189         unsigned offset = field->report_offset;
1190         unsigned size = field->report_size;
1191         unsigned n;
1192
1193         for (n = 0; n < count; n++) {
1194                 if (field->logical_minimum < 0) /* signed values */
1195                         implement(hid, data, offset + n * size, size,
1196                                   s32ton(field->value[n], size));
1197                 else                            /* unsigned values */
1198                         implement(hid, data, offset + n * size, size,
1199                                   field->value[n]);
1200         }
1201 }
1202
1203 /*
1204  * Create a report. 'data' has to be allocated using
1205  * hid_alloc_report_buf() so that it has proper size.
1206  */
1207
1208 void hid_output_report(struct hid_report *report, __u8 *data)
1209 {
1210         unsigned n;
1211
1212         if (report->id > 0)
1213                 *data++ = report->id;
1214
1215         memset(data, 0, ((report->size - 1) >> 3) + 1);
1216         for (n = 0; n < report->maxfield; n++)
1217                 hid_output_field(report->device, report->field[n], data);
1218 }
1219 EXPORT_SYMBOL_GPL(hid_output_report);
1220
1221 /*
1222  * Allocator for buffer that is going to be passed to hid_output_report()
1223  */
1224 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
1225 {
1226         /*
1227          * 7 extra bytes are necessary to achieve proper functionality
1228          * of implement() working on 8 byte chunks
1229          */
1230
1231         int len = ((report->size - 1) >> 3) + 1 + (report->id > 0) + 7;
1232
1233         return kmalloc(len, flags);
1234 }
1235 EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
1236
1237 /*
1238  * Set a field value. The report this field belongs to has to be
1239  * created and transferred to the device, to set this value in the
1240  * device.
1241  */
1242
1243 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1244 {
1245         unsigned size;
1246
1247         if (!field)
1248                 return -1;
1249
1250         size = field->report_size;
1251
1252         hid_dump_input(field->report->device, field->usage + offset, value);
1253
1254         if (offset >= field->report_count) {
1255                 hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1256                                 offset, field->report_count);
1257                 return -1;
1258         }
1259         if (field->logical_minimum < 0) {
1260                 if (value != snto32(s32ton(value, size), size)) {
1261                         hid_err(field->report->device, "value %d is out of range\n", value);
1262                         return -1;
1263                 }
1264         }
1265         field->value[offset] = value;
1266         return 0;
1267 }
1268 EXPORT_SYMBOL_GPL(hid_set_field);
1269
1270 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1271                 const u8 *data)
1272 {
1273         struct hid_report *report;
1274         unsigned int n = 0;     /* Normally report number is 0 */
1275
1276         /* Device uses numbered reports, data[0] is report number */
1277         if (report_enum->numbered)
1278                 n = *data;
1279
1280         report = report_enum->report_id_hash[n];
1281         if (report == NULL)
1282                 dbg_hid("undefined report_id %u received\n", n);
1283
1284         return report;
1285 }
1286
1287 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1288                 int interrupt)
1289 {
1290         struct hid_report_enum *report_enum = hid->report_enum + type;
1291         struct hid_report *report;
1292         struct hid_driver *hdrv;
1293         unsigned int a;
1294         int rsize, csize = size;
1295         u8 *cdata = data;
1296         int ret = 0;
1297
1298         report = hid_get_report(report_enum, data);
1299         if (!report)
1300                 goto out;
1301
1302         if (report_enum->numbered) {
1303                 cdata++;
1304                 csize--;
1305         }
1306
1307         rsize = ((report->size - 1) >> 3) + 1;
1308
1309         if (rsize > HID_MAX_BUFFER_SIZE)
1310                 rsize = HID_MAX_BUFFER_SIZE;
1311
1312         if (csize < rsize) {
1313                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1314                                 csize, rsize);
1315                 memset(cdata + csize, 0, rsize - csize);
1316         }
1317
1318         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1319                 hid->hiddev_report_event(hid, report);
1320         if (hid->claimed & HID_CLAIMED_HIDRAW) {
1321                 ret = hidraw_report_event(hid, data, size);
1322                 if (ret)
1323                         goto out;
1324         }
1325
1326         if (hid->claimed != HID_CLAIMED_HIDRAW && report->maxfield) {
1327                 for (a = 0; a < report->maxfield; a++)
1328                         hid_input_field(hid, report->field[a], cdata, interrupt);
1329                 hdrv = hid->driver;
1330                 if (hdrv && hdrv->report)
1331                         hdrv->report(hid, report);
1332         }
1333
1334         if (hid->claimed & HID_CLAIMED_INPUT)
1335                 hidinput_report_event(hid, report);
1336 out:
1337         return ret;
1338 }
1339 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1340
1341 /**
1342  * hid_input_report - report data from lower layer (usb, bt...)
1343  *
1344  * @hid: hid device
1345  * @type: HID report type (HID_*_REPORT)
1346  * @data: report contents
1347  * @size: size of data parameter
1348  * @interrupt: distinguish between interrupt and control transfers
1349  *
1350  * This is data entry for lower layers.
1351  */
1352 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1353 {
1354         struct hid_report_enum *report_enum;
1355         struct hid_driver *hdrv;
1356         struct hid_report *report;
1357         int ret = 0;
1358
1359         if (!hid)
1360                 return -ENODEV;
1361
1362         if (down_trylock(&hid->driver_input_lock))
1363                 return -EBUSY;
1364
1365         if (!hid->driver) {
1366                 ret = -ENODEV;
1367                 goto unlock;
1368         }
1369         report_enum = hid->report_enum + type;
1370         hdrv = hid->driver;
1371
1372         if (!size) {
1373                 dbg_hid("empty report\n");
1374                 ret = -1;
1375                 goto unlock;
1376         }
1377
1378         /* Avoid unnecessary overhead if debugfs is disabled */
1379         if (!list_empty(&hid->debug_list))
1380                 hid_dump_report(hid, type, data, size);
1381
1382         report = hid_get_report(report_enum, data);
1383
1384         if (!report) {
1385                 ret = -1;
1386                 goto unlock;
1387         }
1388
1389         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1390                 ret = hdrv->raw_event(hid, report, data, size);
1391                 if (ret != 0) {
1392                         ret = ret < 0 ? ret : 0;
1393                         goto unlock;
1394                 }
1395         }
1396
1397         ret = hid_report_raw_event(hid, type, data, size, interrupt);
1398
1399 unlock:
1400         up(&hid->driver_input_lock);
1401         return ret;
1402 }
1403 EXPORT_SYMBOL_GPL(hid_input_report);
1404
1405 static bool hid_match_one_id(struct hid_device *hdev,
1406                 const struct hid_device_id *id)
1407 {
1408         return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1409                 (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1410                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1411                 (id->product == HID_ANY_ID || id->product == hdev->product);
1412 }
1413
1414 const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1415                 const struct hid_device_id *id)
1416 {
1417         for (; id->bus; id++)
1418                 if (hid_match_one_id(hdev, id))
1419                         return id;
1420
1421         return NULL;
1422 }
1423
1424 static const struct hid_device_id hid_hiddev_list[] = {
1425         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1426         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1427         { }
1428 };
1429
1430 static bool hid_hiddev(struct hid_device *hdev)
1431 {
1432         return !!hid_match_id(hdev, hid_hiddev_list);
1433 }
1434
1435
1436 static ssize_t
1437 read_report_descriptor(struct file *filp, struct kobject *kobj,
1438                 struct bin_attribute *attr,
1439                 char *buf, loff_t off, size_t count)
1440 {
1441         struct device *dev = container_of(kobj, struct device, kobj);
1442         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1443
1444         if (off >= hdev->rsize)
1445                 return 0;
1446
1447         if (off + count > hdev->rsize)
1448                 count = hdev->rsize - off;
1449
1450         memcpy(buf, hdev->rdesc + off, count);
1451
1452         return count;
1453 }
1454
1455 static struct bin_attribute dev_bin_attr_report_desc = {
1456         .attr = { .name = "report_descriptor", .mode = 0444 },
1457         .read = read_report_descriptor,
1458         .size = HID_MAX_DESCRIPTOR_SIZE,
1459 };
1460
1461 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1462 {
1463         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1464                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1465                 "Multi-Axis Controller"
1466         };
1467         const char *type, *bus;
1468         char buf[64] = "";
1469         unsigned int i;
1470         int len;
1471         int ret;
1472
1473         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1474                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1475         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1476                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1477         if (hdev->bus != BUS_USB)
1478                 connect_mask &= ~HID_CONNECT_HIDDEV;
1479         if (hid_hiddev(hdev))
1480                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1481
1482         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1483                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1484                 hdev->claimed |= HID_CLAIMED_INPUT;
1485
1486         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1487                         !hdev->hiddev_connect(hdev,
1488                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1489                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1490         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1491                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1492
1493         /* Drivers with the ->raw_event callback set are not required to connect
1494          * to any other listener. */
1495         if (!hdev->claimed && !hdev->driver->raw_event) {
1496                 hid_err(hdev, "device has no listeners, quitting\n");
1497                 return -ENODEV;
1498         }
1499
1500         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1501                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1502                 hdev->ff_init(hdev);
1503
1504         len = 0;
1505         if (hdev->claimed & HID_CLAIMED_INPUT)
1506                 len += sprintf(buf + len, "input");
1507         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1508                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1509                                 hdev->minor);
1510         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1511                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1512                                 ((struct hidraw *)hdev->hidraw)->minor);
1513
1514         type = "Device";
1515         for (i = 0; i < hdev->maxcollection; i++) {
1516                 struct hid_collection *col = &hdev->collection[i];
1517                 if (col->type == HID_COLLECTION_APPLICATION &&
1518                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1519                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1520                         type = types[col->usage & 0xffff];
1521                         break;
1522                 }
1523         }
1524
1525         switch (hdev->bus) {
1526         case BUS_USB:
1527                 bus = "USB";
1528                 break;
1529         case BUS_BLUETOOTH:
1530                 bus = "BLUETOOTH";
1531                 break;
1532         default:
1533                 bus = "<UNKNOWN>";
1534         }
1535
1536         ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1537         if (ret)
1538                 hid_warn(hdev,
1539                          "can't create sysfs report descriptor attribute err: %d\n", ret);
1540
1541         hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1542                  buf, bus, hdev->version >> 8, hdev->version & 0xff,
1543                  type, hdev->name, hdev->phys);
1544
1545         return 0;
1546 }
1547 EXPORT_SYMBOL_GPL(hid_connect);
1548
1549 void hid_disconnect(struct hid_device *hdev)
1550 {
1551         device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1552         if (hdev->claimed & HID_CLAIMED_INPUT)
1553                 hidinput_disconnect(hdev);
1554         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1555                 hdev->hiddev_disconnect(hdev);
1556         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1557                 hidraw_disconnect(hdev);
1558 }
1559 EXPORT_SYMBOL_GPL(hid_disconnect);
1560
1561 /*
1562  * A list of devices for which there is a specialized driver on HID bus.
1563  *
1564  * Please note that for multitouch devices (driven by hid-multitouch driver),
1565  * there is a proper autodetection and autoloading in place (based on presence
1566  * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1567  * as we are doing the right thing in hid_scan_usage().
1568  *
1569  * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1570  * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1571  * used as a driver. See hid_scan_report().
1572  */
1573 static const struct hid_device_id hid_have_special_driver[] = {
1574         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1575         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1576         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1577         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1578         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0xf705) },
1579         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1580         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1581         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1582         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1583         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1584         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1585         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1586         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1587         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1588         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1589         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1590         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1591         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1592         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1593         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1594         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1595         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1596         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1597         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1598         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1599         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1600         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1601         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1602         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1603         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1604         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1605         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1606         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1607         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1608         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1609         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1610         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1611         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1612         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1613         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1614         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1615         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1616         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1617         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1618         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1619         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1620         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1621         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1622         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1623         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1624         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1625         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1626         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1627         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1628         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1629         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1630         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1631         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1632         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1633         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1634         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1635         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1636         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1637         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1638         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1639         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1640         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1641         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1642         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1643         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1644         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1645         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1646         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1647         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1648         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1649         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1650         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1651         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1652         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1653         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1654         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1655         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1656         { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1657         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1658         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1659         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1660         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1661         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1662         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1663         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1664         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1665         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1666         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1667         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1668         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1669         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1670         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1671         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1672         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1673         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1674         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1675         { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1676         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1677         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1678         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1679         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1680         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1681         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1682         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1683         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1684         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1685         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1686         { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1687         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1688         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1689         { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1690         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1691         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1692         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1693         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X_2) },
1694         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1695         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1696         { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1697 #if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
1698         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1699 #endif
1700         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1701         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1702         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1703         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1704         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1705         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1706         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1707         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1708         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1709         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1710         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1711         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1712         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1713         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1714         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1715         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1716         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1717         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1718         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1719         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1720         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1721         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_VIBRATION_WHEEL) },
1722         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1723         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1724         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1725         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1726 #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1727         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1728         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1729 #endif
1730         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1731         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1732         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1733         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1734         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1735         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1736         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1737         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1738         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1739         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1740         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1741         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1742         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1743         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1744         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1745         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1746         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1747         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1748         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1749         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1750         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1751         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1752         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1753         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1754         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1755         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1756         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1757         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1758         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1759         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1760         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1761         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1762         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1763         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1764         { HID_USB_DEVICE(USB_VENDOR_ID_NVIDIA, USB_DEVICE_ID_NVIDIA_LOKI) },
1765         { HID_USB_DEVICE(USB_VENDOR_ID_NVIDIA, USB_DEVICE_ID_NVIDIA_BLAKE) },
1766         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NVIDIA, USB_DEVICE_ID_NVIDIA_JARVIS) },
1767         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NVIDIA, USB_DEVICE_ID_NVIDIA_PEPPER) },
1768         { HID_USB_DEVICE(USB_VENDOR_ID_NVIDIA, USB_DEVICE_ID_NVIDIA_THUNDERSTRIKE) },
1769         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NVIDIA, USB_DEVICE_ID_NVIDIA_THUNDERSTRIKE) },
1770         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1771         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1772         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1773         { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1774 #if IS_ENABLED(CONFIG_HID_ROCCAT)
1775         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1776         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1777         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKUFX) },
1778         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1779         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1780         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
1781         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
1782         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEXTD) },
1783         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1784         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
1785         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1786         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1787         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1788 #endif
1789         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1790         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1791         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1792         { HID_USB_DEVICE(USB_VENDOR_ID_SIS2_TOUCH, USB_DEVICE_ID_SIS9200_TOUCH) },
1793         { HID_USB_DEVICE(USB_VENDOR_ID_SIS2_TOUCH, USB_DEVICE_ID_SIS817_TOUCH) },
1794         { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1795         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1796         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1797         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1798         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1799         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1800         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
1801         { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
1802         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1803         { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
1804         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1805         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1806         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1807         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1808         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1809         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1810         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1811         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1812         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1813         { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1814         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1815         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1816         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1817         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1818         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1819         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1820         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1821         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1822         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1823         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1824         { HID_USB_DEVICE(USB_VENDOR_ID_VALVE,
1825                         USB_DEVICE_ID_VALVE_STEAM_CONTROLLER) },
1826         { HID_USB_DEVICE(USB_VENDOR_ID_VALVE,
1827                         USB_DEVICE_ID_VALVE_STEAM_DONGLE) },
1828         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1829         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1830         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1831         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1832         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1833         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1834         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1835         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
1836         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1837         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1838         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1839         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1840         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1841         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1842         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1843         { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1844         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1845         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1846         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1847
1848         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1849         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1850         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1851         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_GOOGLE, USB_DEVICE_ID_ADT1_REMOTE) },
1852         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_GOOGLE, USB_DEVICE_ID_NEXUS_REMOTE) },
1853         { }
1854 };
1855
1856 struct hid_dynid {
1857         struct list_head list;
1858         struct hid_device_id id;
1859 };
1860
1861 /**
1862  * store_new_id - add a new HID device ID to this driver and re-probe devices
1863  * @driver: target device driver
1864  * @buf: buffer for scanning device ID data
1865  * @count: input size
1866  *
1867  * Adds a new dynamic hid device ID to this driver,
1868  * and causes the driver to probe for all devices again.
1869  */
1870 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1871                 size_t count)
1872 {
1873         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1874         struct hid_dynid *dynid;
1875         __u32 bus, vendor, product;
1876         unsigned long driver_data = 0;
1877         int ret;
1878
1879         ret = sscanf(buf, "%x %x %x %lx",
1880                         &bus, &vendor, &product, &driver_data);
1881         if (ret < 3)
1882                 return -EINVAL;
1883
1884         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1885         if (!dynid)
1886                 return -ENOMEM;
1887
1888         dynid->id.bus = bus;
1889         dynid->id.group = HID_GROUP_ANY;
1890         dynid->id.vendor = vendor;
1891         dynid->id.product = product;
1892         dynid->id.driver_data = driver_data;
1893
1894         spin_lock(&hdrv->dyn_lock);
1895         list_add_tail(&dynid->list, &hdrv->dyn_list);
1896         spin_unlock(&hdrv->dyn_lock);
1897
1898         ret = driver_attach(&hdrv->driver);
1899
1900         return ret ? : count;
1901 }
1902 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1903
1904 static void hid_free_dynids(struct hid_driver *hdrv)
1905 {
1906         struct hid_dynid *dynid, *n;
1907
1908         spin_lock(&hdrv->dyn_lock);
1909         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1910                 list_del(&dynid->list);
1911                 kfree(dynid);
1912         }
1913         spin_unlock(&hdrv->dyn_lock);
1914 }
1915
1916 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1917                 struct hid_driver *hdrv)
1918 {
1919         struct hid_dynid *dynid;
1920
1921         spin_lock(&hdrv->dyn_lock);
1922         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1923                 if (hid_match_one_id(hdev, &dynid->id)) {
1924                         spin_unlock(&hdrv->dyn_lock);
1925                         return &dynid->id;
1926                 }
1927         }
1928         spin_unlock(&hdrv->dyn_lock);
1929
1930         return hid_match_id(hdev, hdrv->id_table);
1931 }
1932
1933 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1934 {
1935         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1936         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1937
1938         return hid_match_device(hdev, hdrv) != NULL;
1939 }
1940
1941 static int hid_device_probe(struct device *dev)
1942 {
1943         struct hid_driver *hdrv = container_of(dev->driver,
1944                         struct hid_driver, driver);
1945         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1946         const struct hid_device_id *id;
1947         int ret = 0;
1948
1949         if (down_interruptible(&hdev->driver_lock))
1950                 return -EINTR;
1951         if (down_interruptible(&hdev->driver_input_lock)) {
1952                 ret = -EINTR;
1953                 goto unlock_driver_lock;
1954         }
1955         hdev->io_started = false;
1956
1957         if (!hdev->driver) {
1958                 id = hid_match_device(hdev, hdrv);
1959                 if (id == NULL) {
1960                         ret = -ENODEV;
1961                         goto unlock;
1962                 }
1963
1964                 hdev->driver = hdrv;
1965                 if (hdrv->probe) {
1966                         ret = hdrv->probe(hdev, id);
1967                 } else { /* default probe */
1968                         ret = hid_open_report(hdev);
1969                         if (!ret)
1970                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1971                 }
1972                 if (ret) {
1973                         hid_close_report(hdev);
1974                         hdev->driver = NULL;
1975                 }
1976         }
1977 unlock:
1978         if (!hdev->io_started)
1979                 up(&hdev->driver_input_lock);
1980 unlock_driver_lock:
1981         up(&hdev->driver_lock);
1982         return ret;
1983 }
1984
1985 static int hid_device_remove(struct device *dev)
1986 {
1987         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1988         struct hid_driver *hdrv;
1989         int ret = 0;
1990
1991         if (down_interruptible(&hdev->driver_lock))
1992                 return -EINTR;
1993         if (down_interruptible(&hdev->driver_input_lock)) {
1994                 ret = -EINTR;
1995                 goto unlock_driver_lock;
1996         }
1997         hdev->io_started = false;
1998
1999         hdrv = hdev->driver;
2000         if (hdrv) {
2001                 if (hdrv->remove)
2002                         hdrv->remove(hdev);
2003                 else /* default remove */
2004                         hid_hw_stop(hdev);
2005                 hid_close_report(hdev);
2006                 hdev->driver = NULL;
2007         }
2008
2009         if (!hdev->io_started)
2010                 up(&hdev->driver_input_lock);
2011 unlock_driver_lock:
2012         up(&hdev->driver_lock);
2013         return ret;
2014 }
2015
2016 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
2017                              char *buf)
2018 {
2019         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2020         int len;
2021
2022         len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
2023                        hdev->bus, hdev->group, hdev->vendor, hdev->product);
2024
2025         return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
2026 }
2027
2028 static struct device_attribute hid_dev_attrs[] = {
2029         __ATTR_RO(modalias),
2030         __ATTR_NULL,
2031 };
2032
2033 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
2034 {
2035         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2036
2037         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
2038                         hdev->bus, hdev->vendor, hdev->product))
2039                 return -ENOMEM;
2040
2041         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
2042                 return -ENOMEM;
2043
2044         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
2045                 return -ENOMEM;
2046
2047         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
2048                 return -ENOMEM;
2049
2050         if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
2051                            hdev->bus, hdev->group, hdev->vendor, hdev->product))
2052                 return -ENOMEM;
2053
2054         return 0;
2055 }
2056
2057 static struct bus_type hid_bus_type = {
2058         .name           = "hid",
2059         .dev_attrs      = hid_dev_attrs,
2060         .match          = hid_bus_match,
2061         .probe          = hid_device_probe,
2062         .remove         = hid_device_remove,
2063         .uevent         = hid_uevent,
2064 };
2065
2066 /* a list of devices that shouldn't be handled by HID core at all */
2067 static const struct hid_device_id hid_ignore_list[] = {
2068         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
2069         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
2070         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
2071         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
2072         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
2073         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
2074         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
2075         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
2076         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
2077         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
2078         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
2079         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
2080         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
2081         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
2082         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
2083         { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
2084         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
2085         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
2086         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
2087         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
2088         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
2089         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
2090         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
2091         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
2092         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
2093         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
2094         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
2095         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
2096         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
2097         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
2098         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
2099         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
2100         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
2101         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
2102         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
2103         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
2104         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
2105         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
2106         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
2107         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
2108         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
2109         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2110         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2111         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2112         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2113         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2114         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2115         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2116         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2117         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2118         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2119         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2120         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2121         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2122         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2123         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2124         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2125         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2126         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2127         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2128         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2129         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2130         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2131         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2132         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2133         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2134         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2135         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2136         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2137         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2138         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2139         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2140         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2141         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2142         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2143         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2144         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2145         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2146         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2147         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2148         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2149         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2150         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2151         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2152         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2153         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2154         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2155         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2156         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2157         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2158         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2159         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2160         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2161         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2162         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2163         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2164         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2165         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2166         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2167         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2168         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2169         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2170         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2171         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2172         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2173         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2174         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2175         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2176         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2177         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2178         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2179         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2180         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2181         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2182         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2183         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2184         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2185         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2186         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2187         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2188         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2189         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2190         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2191         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2192         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2193         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2194         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2195         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2196         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2197         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2198         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2199         { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2200         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2201         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2202         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2203         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2204         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2205         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2206         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2207         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2208         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2209         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2210         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2211         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2212         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2213         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2214         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2215         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2216         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2217         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2218         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2219         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2220         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2221 #if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2222         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2223         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2224         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2225         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2226         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2227         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2228         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2229         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2230 #endif
2231         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2232         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2233         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2234         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2235         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2236         { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
2237         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2238         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2239         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2240         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2241         { }
2242 };
2243
2244 /**
2245  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2246  *
2247  * There are composite devices for which we want to ignore only a certain
2248  * interface. This is a list of devices for which only the mouse interface will
2249  * be ignored. This allows a dedicated driver to take care of the interface.
2250  */
2251 static const struct hid_device_id hid_mouse_ignore_list[] = {
2252         /* appletouch driver */
2253         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2254         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2255         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2256         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2257         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2258         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2259         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2260         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2261         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2262         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2263         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2264         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2265         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2266         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2267         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2268         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2269         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2270         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2271         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2272         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2273         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2274         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2275         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2276         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2277         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2278         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2279         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2280         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2281         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2282         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2283         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2284         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2285         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2286         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2287         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2288         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2289         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2290         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2291         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2292         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2293         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2294         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2295         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2296         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2297         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2298         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2299         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2300         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2301         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2302         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2303         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2304         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2305         { }
2306 };
2307
2308 bool hid_ignore(struct hid_device *hdev)
2309 {
2310         if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2311                 return false;
2312         if (hdev->quirks & HID_QUIRK_IGNORE)
2313                 return true;
2314
2315         switch (hdev->vendor) {
2316         case USB_VENDOR_ID_CODEMERCS:
2317                 /* ignore all Code Mercenaries IOWarrior devices */
2318                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2319                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2320                         return true;
2321                 break;
2322         case USB_VENDOR_ID_LOGITECH:
2323                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2324                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2325                         return true;
2326                 /*
2327                  * The Keene FM transmitter USB device has the same USB ID as
2328                  * the Logitech AudioHub Speaker, but it should ignore the hid.
2329                  * Check if the name is that of the Keene device.
2330                  * For reference: the name of the AudioHub is
2331                  * "HOLTEK  AudioHub Speaker".
2332                  */
2333                 if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2334                         !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2335                                 return true;
2336                 break;
2337         case USB_VENDOR_ID_SOUNDGRAPH:
2338                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2339                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2340                         return true;
2341                 break;
2342         case USB_VENDOR_ID_HANWANG:
2343                 if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2344                     hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2345                         return true;
2346                 break;
2347         case USB_VENDOR_ID_JESS:
2348                 if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2349                                 hdev->type == HID_TYPE_USBNONE)
2350                         return true;
2351                 break;
2352         case USB_VENDOR_ID_VELLEMAN:
2353                 /* These are not HID devices.  They are handled by comedi. */
2354                 if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2355                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2356                     (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2357                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2358                         return true;
2359                 break;
2360         case USB_VENDOR_ID_ATMEL_V_USB:
2361                 /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2362                  * it has the same USB ID as many Atmel V-USB devices. This
2363                  * usb radio is handled by radio-ma901.c driver so we want
2364                  * ignore the hid. Check the name, bus, product and ignore
2365                  * if we have MA901 usb radio.
2366                  */
2367                 if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2368                         hdev->bus == BUS_USB &&
2369                         strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2370                         return true;
2371                 break;
2372         }
2373
2374         if (hdev->type == HID_TYPE_USBMOUSE &&
2375                         hid_match_id(hdev, hid_mouse_ignore_list))
2376                 return true;
2377
2378         return !!hid_match_id(hdev, hid_ignore_list);
2379 }
2380 EXPORT_SYMBOL_GPL(hid_ignore);
2381
2382 int hid_add_device(struct hid_device *hdev)
2383 {
2384         static atomic_t id = ATOMIC_INIT(0);
2385         int ret;
2386
2387         if (WARN_ON(hdev->status & HID_STAT_ADDED))
2388                 return -EBUSY;
2389
2390         /* we need to kill them here, otherwise they will stay allocated to
2391          * wait for coming driver */
2392         if (hid_ignore(hdev))
2393                 return -ENODEV;
2394
2395         /*
2396          * Read the device report descriptor once and use as template
2397          * for the driver-specific modifications.
2398          */
2399         ret = hdev->ll_driver->parse(hdev);
2400         if (ret)
2401                 return ret;
2402         if (!hdev->dev_rdesc)
2403                 return -ENODEV;
2404
2405         /*
2406          * Scan generic devices for group information
2407          */
2408         if (hid_ignore_special_drivers ||
2409             !hid_match_id(hdev, hid_have_special_driver)) {
2410                 ret = hid_scan_report(hdev);
2411                 if (ret)
2412                         hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2413         }
2414
2415         /* XXX hack, any other cleaner solution after the driver core
2416          * is converted to allow more than 20 bytes as the device name? */
2417         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2418                      hdev->vendor, hdev->product, atomic_inc_return(&id));
2419
2420         hid_debug_register(hdev, dev_name(&hdev->dev));
2421         ret = device_add(&hdev->dev);
2422         if (!ret)
2423                 hdev->status |= HID_STAT_ADDED;
2424         else
2425                 hid_debug_unregister(hdev);
2426
2427         return ret;
2428 }
2429 EXPORT_SYMBOL_GPL(hid_add_device);
2430
2431 /**
2432  * hid_allocate_device - allocate new hid device descriptor
2433  *
2434  * Allocate and initialize hid device, so that hid_destroy_device might be
2435  * used to free it.
2436  *
2437  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2438  * error value.
2439  */
2440 struct hid_device *hid_allocate_device(void)
2441 {
2442         struct hid_device *hdev;
2443         int ret = -ENOMEM;
2444
2445         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2446         if (hdev == NULL)
2447                 return ERR_PTR(ret);
2448
2449         device_initialize(&hdev->dev);
2450         hdev->dev.release = hid_device_release;
2451         hdev->dev.bus = &hid_bus_type;
2452
2453         hid_close_report(hdev);
2454
2455         init_waitqueue_head(&hdev->debug_wait);
2456         INIT_LIST_HEAD(&hdev->debug_list);
2457         spin_lock_init(&hdev->debug_list_lock);
2458         sema_init(&hdev->driver_lock, 1);
2459         sema_init(&hdev->driver_input_lock, 1);
2460
2461         return hdev;
2462 }
2463 EXPORT_SYMBOL_GPL(hid_allocate_device);
2464
2465 static void hid_remove_device(struct hid_device *hdev)
2466 {
2467         if (hdev->status & HID_STAT_ADDED) {
2468                 device_del(&hdev->dev);
2469                 hid_debug_unregister(hdev);
2470                 hdev->status &= ~HID_STAT_ADDED;
2471         }
2472         kfree(hdev->dev_rdesc);
2473         hdev->dev_rdesc = NULL;
2474         hdev->dev_rsize = 0;
2475 }
2476
2477 /**
2478  * hid_destroy_device - free previously allocated device
2479  *
2480  * @hdev: hid device
2481  *
2482  * If you allocate hid_device through hid_allocate_device, you should ever
2483  * free by this function.
2484  */
2485 void hid_destroy_device(struct hid_device *hdev)
2486 {
2487         hid_remove_device(hdev);
2488         put_device(&hdev->dev);
2489 }
2490 EXPORT_SYMBOL_GPL(hid_destroy_device);
2491
2492 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2493                 const char *mod_name)
2494 {
2495         int ret;
2496
2497         hdrv->driver.name = hdrv->name;
2498         hdrv->driver.bus = &hid_bus_type;
2499         hdrv->driver.owner = owner;
2500         hdrv->driver.mod_name = mod_name;
2501
2502         INIT_LIST_HEAD(&hdrv->dyn_list);
2503         spin_lock_init(&hdrv->dyn_lock);
2504
2505         ret = driver_register(&hdrv->driver);
2506         if (ret)
2507                 return ret;
2508
2509         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2510         if (ret)
2511                 driver_unregister(&hdrv->driver);
2512
2513         return ret;
2514 }
2515 EXPORT_SYMBOL_GPL(__hid_register_driver);
2516
2517 void hid_unregister_driver(struct hid_driver *hdrv)
2518 {
2519         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2520         driver_unregister(&hdrv->driver);
2521         hid_free_dynids(hdrv);
2522 }
2523 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2524
2525 int hid_check_keys_pressed(struct hid_device *hid)
2526 {
2527         struct hid_input *hidinput;
2528         int i;
2529
2530         if (!(hid->claimed & HID_CLAIMED_INPUT))
2531                 return 0;
2532
2533         list_for_each_entry(hidinput, &hid->inputs, list) {
2534                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2535                         if (hidinput->input->key[i])
2536                                 return 1;
2537         }
2538
2539         return 0;
2540 }
2541
2542 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2543
2544 static int __init hid_init(void)
2545 {
2546         int ret;
2547
2548         if (hid_debug)
2549                 pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2550                         "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2551
2552         ret = bus_register(&hid_bus_type);
2553         if (ret) {
2554                 pr_err("can't register hid bus\n");
2555                 goto err;
2556         }
2557
2558         ret = hidraw_init();
2559         if (ret)
2560                 goto err_bus;
2561
2562         hid_debug_init();
2563
2564         return 0;
2565 err_bus:
2566         bus_unregister(&hid_bus_type);
2567 err:
2568         return ret;
2569 }
2570
2571 static void __exit hid_exit(void)
2572 {
2573         hid_debug_exit();
2574         hidraw_exit();
2575         bus_unregister(&hid_bus_type);
2576 }
2577
2578 module_init(hid_init);
2579 module_exit(hid_exit);
2580
2581 MODULE_AUTHOR("Andreas Gal");
2582 MODULE_AUTHOR("Vojtech Pavlik");
2583 MODULE_AUTHOR("Jiri Kosina");
2584 MODULE_LICENSE(DRIVER_LICENSE);
2585