Merge branches 'magicmouse', 'roccat' and 'vec-pedal' into for-linus
[linux-2.6.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) 2006-2010 Jiri Kosina
8  */
9
10 /*
11  * This program is free software; you can redistribute it and/or modify it
12  * under the terms of the GNU General Public License as published by the Free
13  * Software Foundation; either version 2 of the License, or (at your option)
14  * any later version.
15  */
16
17 #include <linux/module.h>
18 #include <linux/slab.h>
19 #include <linux/init.h>
20 #include <linux/kernel.h>
21 #include <linux/list.h>
22 #include <linux/mm.h>
23 #include <linux/spinlock.h>
24 #include <asm/unaligned.h>
25 #include <asm/byteorder.h>
26 #include <linux/input.h>
27 #include <linux/wait.h>
28 #include <linux/vmalloc.h>
29 #include <linux/sched.h>
30
31 #include <linux/hid.h>
32 #include <linux/hiddev.h>
33 #include <linux/hid-debug.h>
34 #include <linux/hidraw.h>
35
36 #include "hid-ids.h"
37
38 /*
39  * Version Information
40  */
41
42 #define DRIVER_DESC "HID core driver"
43 #define DRIVER_LICENSE "GPL"
44
45 int hid_debug = 0;
46 module_param_named(debug, hid_debug, int, 0600);
47 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
48 EXPORT_SYMBOL_GPL(hid_debug);
49
50 /*
51  * Register a new report for a device.
52  */
53
54 struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
55 {
56         struct hid_report_enum *report_enum = device->report_enum + type;
57         struct hid_report *report;
58
59         if (report_enum->report_id_hash[id])
60                 return report_enum->report_id_hash[id];
61
62         if (!(report = kzalloc(sizeof(struct hid_report), GFP_KERNEL)))
63                 return NULL;
64
65         if (id != 0)
66                 report_enum->numbered = 1;
67
68         report->id = id;
69         report->type = type;
70         report->size = 0;
71         report->device = device;
72         report_enum->report_id_hash[id] = report;
73
74         list_add_tail(&report->list, &report_enum->report_list);
75
76         return report;
77 }
78 EXPORT_SYMBOL_GPL(hid_register_report);
79
80 /*
81  * Register a new field for this report.
82  */
83
84 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
85 {
86         struct hid_field *field;
87
88         if (report->maxfield == HID_MAX_FIELDS) {
89                 dbg_hid("too many fields in report\n");
90                 return NULL;
91         }
92
93         if (!(field = kzalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
94                 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
95
96         field->index = report->maxfield++;
97         report->field[field->index] = field;
98         field->usage = (struct hid_usage *)(field + 1);
99         field->value = (s32 *)(field->usage + usages);
100         field->report = report;
101
102         return field;
103 }
104
105 /*
106  * Open a collection. The type/usage is pushed on the stack.
107  */
108
109 static int open_collection(struct hid_parser *parser, unsigned type)
110 {
111         struct hid_collection *collection;
112         unsigned usage;
113
114         usage = parser->local.usage[0];
115
116         if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
117                 dbg_hid("collection stack overflow\n");
118                 return -1;
119         }
120
121         if (parser->device->maxcollection == parser->device->collection_size) {
122                 collection = kmalloc(sizeof(struct hid_collection) *
123                                 parser->device->collection_size * 2, GFP_KERNEL);
124                 if (collection == NULL) {
125                         dbg_hid("failed to reallocate collection array\n");
126                         return -1;
127                 }
128                 memcpy(collection, parser->device->collection,
129                         sizeof(struct hid_collection) *
130                         parser->device->collection_size);
131                 memset(collection + parser->device->collection_size, 0,
132                         sizeof(struct hid_collection) *
133                         parser->device->collection_size);
134                 kfree(parser->device->collection);
135                 parser->device->collection = collection;
136                 parser->device->collection_size *= 2;
137         }
138
139         parser->collection_stack[parser->collection_stack_ptr++] =
140                 parser->device->maxcollection;
141
142         collection = parser->device->collection +
143                 parser->device->maxcollection++;
144         collection->type = type;
145         collection->usage = usage;
146         collection->level = parser->collection_stack_ptr - 1;
147
148         if (type == HID_COLLECTION_APPLICATION)
149                 parser->device->maxapplication++;
150
151         return 0;
152 }
153
154 /*
155  * Close a collection.
156  */
157
158 static int close_collection(struct hid_parser *parser)
159 {
160         if (!parser->collection_stack_ptr) {
161                 dbg_hid("collection stack underflow\n");
162                 return -1;
163         }
164         parser->collection_stack_ptr--;
165         return 0;
166 }
167
168 /*
169  * Climb up the stack, search for the specified collection type
170  * and return the usage.
171  */
172
173 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
174 {
175         int n;
176         for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
177                 if (parser->device->collection[parser->collection_stack[n]].type == type)
178                         return parser->device->collection[parser->collection_stack[n]].usage;
179         return 0; /* we know nothing about this usage type */
180 }
181
182 /*
183  * Add a usage to the temporary parser table.
184  */
185
186 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
187 {
188         if (parser->local.usage_index >= HID_MAX_USAGES) {
189                 dbg_hid("usage index exceeded\n");
190                 return -1;
191         }
192         parser->local.usage[parser->local.usage_index] = usage;
193         parser->local.collection_index[parser->local.usage_index] =
194                 parser->collection_stack_ptr ?
195                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
196         parser->local.usage_index++;
197         return 0;
198 }
199
200 /*
201  * Register a new field for this report.
202  */
203
204 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
205 {
206         struct hid_report *report;
207         struct hid_field *field;
208         int usages;
209         unsigned offset;
210         int i;
211
212         if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
213                 dbg_hid("hid_register_report failed\n");
214                 return -1;
215         }
216
217         if (parser->global.logical_maximum < parser->global.logical_minimum) {
218                 dbg_hid("logical range invalid %d %d\n", parser->global.logical_minimum, parser->global.logical_maximum);
219                 return -1;
220         }
221
222         offset = report->size;
223         report->size += parser->global.report_size * parser->global.report_count;
224
225         if (!parser->local.usage_index) /* Ignore padding fields */
226                 return 0;
227
228         usages = max_t(int, parser->local.usage_index, parser->global.report_count);
229
230         if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
231                 return 0;
232
233         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
234         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
235         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
236
237         for (i = 0; i < usages; i++) {
238                 int j = i;
239                 /* Duplicate the last usage we parsed if we have excess values */
240                 if (i >= parser->local.usage_index)
241                         j = parser->local.usage_index - 1;
242                 field->usage[i].hid = parser->local.usage[j];
243                 field->usage[i].collection_index =
244                         parser->local.collection_index[j];
245         }
246
247         field->maxusage = usages;
248         field->flags = flags;
249         field->report_offset = offset;
250         field->report_type = report_type;
251         field->report_size = parser->global.report_size;
252         field->report_count = parser->global.report_count;
253         field->logical_minimum = parser->global.logical_minimum;
254         field->logical_maximum = parser->global.logical_maximum;
255         field->physical_minimum = parser->global.physical_minimum;
256         field->physical_maximum = parser->global.physical_maximum;
257         field->unit_exponent = parser->global.unit_exponent;
258         field->unit = parser->global.unit;
259
260         return 0;
261 }
262
263 /*
264  * Read data value from item.
265  */
266
267 static u32 item_udata(struct hid_item *item)
268 {
269         switch (item->size) {
270         case 1: return item->data.u8;
271         case 2: return item->data.u16;
272         case 4: return item->data.u32;
273         }
274         return 0;
275 }
276
277 static s32 item_sdata(struct hid_item *item)
278 {
279         switch (item->size) {
280         case 1: return item->data.s8;
281         case 2: return item->data.s16;
282         case 4: return item->data.s32;
283         }
284         return 0;
285 }
286
287 /*
288  * Process a global item.
289  */
290
291 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
292 {
293         switch (item->tag) {
294         case HID_GLOBAL_ITEM_TAG_PUSH:
295
296                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
297                         dbg_hid("global enviroment stack overflow\n");
298                         return -1;
299                 }
300
301                 memcpy(parser->global_stack + parser->global_stack_ptr++,
302                         &parser->global, sizeof(struct hid_global));
303                 return 0;
304
305         case HID_GLOBAL_ITEM_TAG_POP:
306
307                 if (!parser->global_stack_ptr) {
308                         dbg_hid("global enviroment stack underflow\n");
309                         return -1;
310                 }
311
312                 memcpy(&parser->global, parser->global_stack +
313                         --parser->global_stack_ptr, sizeof(struct hid_global));
314                 return 0;
315
316         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
317                 parser->global.usage_page = item_udata(item);
318                 return 0;
319
320         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
321                 parser->global.logical_minimum = item_sdata(item);
322                 return 0;
323
324         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
325                 if (parser->global.logical_minimum < 0)
326                         parser->global.logical_maximum = item_sdata(item);
327                 else
328                         parser->global.logical_maximum = item_udata(item);
329                 return 0;
330
331         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
332                 parser->global.physical_minimum = item_sdata(item);
333                 return 0;
334
335         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
336                 if (parser->global.physical_minimum < 0)
337                         parser->global.physical_maximum = item_sdata(item);
338                 else
339                         parser->global.physical_maximum = item_udata(item);
340                 return 0;
341
342         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
343                 parser->global.unit_exponent = item_sdata(item);
344                 return 0;
345
346         case HID_GLOBAL_ITEM_TAG_UNIT:
347                 parser->global.unit = item_udata(item);
348                 return 0;
349
350         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
351                 parser->global.report_size = item_udata(item);
352                 if (parser->global.report_size > 32) {
353                         dbg_hid("invalid report_size %d\n",
354                                         parser->global.report_size);
355                         return -1;
356                 }
357                 return 0;
358
359         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
360                 parser->global.report_count = item_udata(item);
361                 if (parser->global.report_count > HID_MAX_USAGES) {
362                         dbg_hid("invalid report_count %d\n",
363                                         parser->global.report_count);
364                         return -1;
365                 }
366                 return 0;
367
368         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
369                 parser->global.report_id = item_udata(item);
370                 if (parser->global.report_id == 0) {
371                         dbg_hid("report_id 0 is invalid\n");
372                         return -1;
373                 }
374                 return 0;
375
376         default:
377                 dbg_hid("unknown global tag 0x%x\n", item->tag);
378                 return -1;
379         }
380 }
381
382 /*
383  * Process a local item.
384  */
385
386 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
387 {
388         __u32 data;
389         unsigned n;
390
391         /* Local delimiter could have value 0, which allows size to be 0 */
392         if (item->size == 0 && item->tag != HID_LOCAL_ITEM_TAG_DELIMITER) {
393                 dbg_hid("item data expected for local item\n");
394                 return -1;
395         }
396
397         data = item_udata(item);
398
399         switch (item->tag) {
400         case HID_LOCAL_ITEM_TAG_DELIMITER:
401
402                 if (data) {
403                         /*
404                          * We treat items before the first delimiter
405                          * as global to all usage sets (branch 0).
406                          * In the moment we process only these global
407                          * items and the first delimiter set.
408                          */
409                         if (parser->local.delimiter_depth != 0) {
410                                 dbg_hid("nested delimiters\n");
411                                 return -1;
412                         }
413                         parser->local.delimiter_depth++;
414                         parser->local.delimiter_branch++;
415                 } else {
416                         if (parser->local.delimiter_depth < 1) {
417                                 dbg_hid("bogus close delimiter\n");
418                                 return -1;
419                         }
420                         parser->local.delimiter_depth--;
421                 }
422                 return 1;
423
424         case HID_LOCAL_ITEM_TAG_USAGE:
425
426                 if (parser->local.delimiter_branch > 1) {
427                         dbg_hid("alternative usage ignored\n");
428                         return 0;
429                 }
430
431                 if (item->size <= 2)
432                         data = (parser->global.usage_page << 16) + data;
433
434                 return hid_add_usage(parser, data);
435
436         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
437
438                 if (parser->local.delimiter_branch > 1) {
439                         dbg_hid("alternative usage ignored\n");
440                         return 0;
441                 }
442
443                 if (item->size <= 2)
444                         data = (parser->global.usage_page << 16) + data;
445
446                 parser->local.usage_minimum = data;
447                 return 0;
448
449         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
450
451                 if (parser->local.delimiter_branch > 1) {
452                         dbg_hid("alternative usage ignored\n");
453                         return 0;
454                 }
455
456                 if (item->size <= 2)
457                         data = (parser->global.usage_page << 16) + data;
458
459                 for (n = parser->local.usage_minimum; n <= data; n++)
460                         if (hid_add_usage(parser, n)) {
461                                 dbg_hid("hid_add_usage failed\n");
462                                 return -1;
463                         }
464                 return 0;
465
466         default:
467
468                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
469                 return 0;
470         }
471         return 0;
472 }
473
474 /*
475  * Process a main item.
476  */
477
478 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
479 {
480         __u32 data;
481         int ret;
482
483         data = item_udata(item);
484
485         switch (item->tag) {
486         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
487                 ret = open_collection(parser, data & 0xff);
488                 break;
489         case HID_MAIN_ITEM_TAG_END_COLLECTION:
490                 ret = close_collection(parser);
491                 break;
492         case HID_MAIN_ITEM_TAG_INPUT:
493                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
494                 break;
495         case HID_MAIN_ITEM_TAG_OUTPUT:
496                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
497                 break;
498         case HID_MAIN_ITEM_TAG_FEATURE:
499                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
500                 break;
501         default:
502                 dbg_hid("unknown main item tag 0x%x\n", item->tag);
503                 ret = 0;
504         }
505
506         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
507
508         return ret;
509 }
510
511 /*
512  * Process a reserved item.
513  */
514
515 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
516 {
517         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
518         return 0;
519 }
520
521 /*
522  * Free a report and all registered fields. The field->usage and
523  * field->value table's are allocated behind the field, so we need
524  * only to free(field) itself.
525  */
526
527 static void hid_free_report(struct hid_report *report)
528 {
529         unsigned n;
530
531         for (n = 0; n < report->maxfield; n++)
532                 kfree(report->field[n]);
533         kfree(report);
534 }
535
536 /*
537  * Free a device structure, all reports, and all fields.
538  */
539
540 static void hid_device_release(struct device *dev)
541 {
542         struct hid_device *device = container_of(dev, struct hid_device, dev);
543         unsigned i, j;
544
545         for (i = 0; i < HID_REPORT_TYPES; i++) {
546                 struct hid_report_enum *report_enum = device->report_enum + i;
547
548                 for (j = 0; j < 256; j++) {
549                         struct hid_report *report = report_enum->report_id_hash[j];
550                         if (report)
551                                 hid_free_report(report);
552                 }
553         }
554
555         kfree(device->rdesc);
556         kfree(device->collection);
557         kfree(device);
558 }
559
560 /*
561  * Fetch a report description item from the data stream. We support long
562  * items, though they are not used yet.
563  */
564
565 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
566 {
567         u8 b;
568
569         if ((end - start) <= 0)
570                 return NULL;
571
572         b = *start++;
573
574         item->type = (b >> 2) & 3;
575         item->tag  = (b >> 4) & 15;
576
577         if (item->tag == HID_ITEM_TAG_LONG) {
578
579                 item->format = HID_ITEM_FORMAT_LONG;
580
581                 if ((end - start) < 2)
582                         return NULL;
583
584                 item->size = *start++;
585                 item->tag  = *start++;
586
587                 if ((end - start) < item->size)
588                         return NULL;
589
590                 item->data.longdata = start;
591                 start += item->size;
592                 return start;
593         }
594
595         item->format = HID_ITEM_FORMAT_SHORT;
596         item->size = b & 3;
597
598         switch (item->size) {
599         case 0:
600                 return start;
601
602         case 1:
603                 if ((end - start) < 1)
604                         return NULL;
605                 item->data.u8 = *start++;
606                 return start;
607
608         case 2:
609                 if ((end - start) < 2)
610                         return NULL;
611                 item->data.u16 = get_unaligned_le16(start);
612                 start = (__u8 *)((__le16 *)start + 1);
613                 return start;
614
615         case 3:
616                 item->size++;
617                 if ((end - start) < 4)
618                         return NULL;
619                 item->data.u32 = get_unaligned_le32(start);
620                 start = (__u8 *)((__le32 *)start + 1);
621                 return start;
622         }
623
624         return NULL;
625 }
626
627 /**
628  * hid_parse_report - parse device report
629  *
630  * @device: hid device
631  * @start: report start
632  * @size: report size
633  *
634  * Parse a report description into a hid_device structure. Reports are
635  * enumerated, fields are attached to these reports.
636  * 0 returned on success, otherwise nonzero error value.
637  */
638 int hid_parse_report(struct hid_device *device, __u8 *start,
639                 unsigned size)
640 {
641         struct hid_parser *parser;
642         struct hid_item item;
643         __u8 *end;
644         int ret;
645         static int (*dispatch_type[])(struct hid_parser *parser,
646                                       struct hid_item *item) = {
647                 hid_parser_main,
648                 hid_parser_global,
649                 hid_parser_local,
650                 hid_parser_reserved
651         };
652
653         if (device->driver->report_fixup)
654                 device->driver->report_fixup(device, start, size);
655
656         device->rdesc = kmemdup(start, size, GFP_KERNEL);
657         if (device->rdesc == NULL)
658                 return -ENOMEM;
659         device->rsize = size;
660
661         parser = vmalloc(sizeof(struct hid_parser));
662         if (!parser) {
663                 ret = -ENOMEM;
664                 goto err;
665         }
666
667         memset(parser, 0, sizeof(struct hid_parser));
668         parser->device = device;
669
670         end = start + size;
671         ret = -EINVAL;
672         while ((start = fetch_item(start, end, &item)) != NULL) {
673
674                 if (item.format != HID_ITEM_FORMAT_SHORT) {
675                         dbg_hid("unexpected long global item\n");
676                         goto err;
677                 }
678
679                 if (dispatch_type[item.type](parser, &item)) {
680                         dbg_hid("item %u %u %u %u parsing failed\n",
681                                 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
682                         goto err;
683                 }
684
685                 if (start == end) {
686                         if (parser->collection_stack_ptr) {
687                                 dbg_hid("unbalanced collection at end of report description\n");
688                                 goto err;
689                         }
690                         if (parser->local.delimiter_depth) {
691                                 dbg_hid("unbalanced delimiter at end of report description\n");
692                                 goto err;
693                         }
694                         vfree(parser);
695                         return 0;
696                 }
697         }
698
699         dbg_hid("item fetching failed at offset %d\n", (int)(end - start));
700 err:
701         vfree(parser);
702         return ret;
703 }
704 EXPORT_SYMBOL_GPL(hid_parse_report);
705
706 /*
707  * Convert a signed n-bit integer to signed 32-bit integer. Common
708  * cases are done through the compiler, the screwed things has to be
709  * done by hand.
710  */
711
712 static s32 snto32(__u32 value, unsigned n)
713 {
714         switch (n) {
715         case 8:  return ((__s8)value);
716         case 16: return ((__s16)value);
717         case 32: return ((__s32)value);
718         }
719         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
720 }
721
722 /*
723  * Convert a signed 32-bit integer to a signed n-bit integer.
724  */
725
726 static u32 s32ton(__s32 value, unsigned n)
727 {
728         s32 a = value >> (n - 1);
729         if (a && a != -1)
730                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
731         return value & ((1 << n) - 1);
732 }
733
734 /*
735  * Extract/implement a data field from/to a little endian report (bit array).
736  *
737  * Code sort-of follows HID spec:
738  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
739  *
740  * While the USB HID spec allows unlimited length bit fields in "report
741  * descriptors", most devices never use more than 16 bits.
742  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
743  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
744  */
745
746 static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
747 {
748         u64 x;
749
750         if (n > 32)
751                 printk(KERN_WARNING "HID: extract() called with n (%d) > 32! (%s)\n",
752                                 n, current->comm);
753
754         report += offset >> 3;  /* adjust byte index */
755         offset &= 7;            /* now only need bit offset into one byte */
756         x = get_unaligned_le64(report);
757         x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
758         return (u32) x;
759 }
760
761 /*
762  * "implement" : set bits in a little endian bit stream.
763  * Same concepts as "extract" (see comments above).
764  * The data mangled in the bit stream remains in little endian
765  * order the whole time. It make more sense to talk about
766  * endianness of register values by considering a register
767  * a "cached" copy of the little endiad bit stream.
768  */
769 static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
770 {
771         u64 x;
772         u64 m = (1ULL << n) - 1;
773
774         if (n > 32)
775                 printk(KERN_WARNING "HID: implement() called with n (%d) > 32! (%s)\n",
776                                 n, current->comm);
777
778         if (value > m)
779                 printk(KERN_WARNING "HID: implement() called with too large value %d! (%s)\n",
780                                 value, current->comm);
781         WARN_ON(value > m);
782         value &= m;
783
784         report += offset >> 3;
785         offset &= 7;
786
787         x = get_unaligned_le64(report);
788         x &= ~(m << offset);
789         x |= ((u64)value) << offset;
790         put_unaligned_le64(x, report);
791 }
792
793 /*
794  * Search an array for a value.
795  */
796
797 static __inline__ int search(__s32 *array, __s32 value, unsigned n)
798 {
799         while (n--) {
800                 if (*array++ == value)
801                         return 0;
802         }
803         return -1;
804 }
805
806 /**
807  * hid_match_report - check if driver's raw_event should be called
808  *
809  * @hid: hid device
810  * @report_type: type to match against
811  *
812  * compare hid->driver->report_table->report_type to report->type
813  */
814 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
815 {
816         const struct hid_report_id *id = hid->driver->report_table;
817
818         if (!id) /* NULL means all */
819                 return 1;
820
821         for (; id->report_type != HID_TERMINATOR; id++)
822                 if (id->report_type == HID_ANY_ID ||
823                                 id->report_type == report->type)
824                         return 1;
825         return 0;
826 }
827
828 /**
829  * hid_match_usage - check if driver's event should be called
830  *
831  * @hid: hid device
832  * @usage: usage to match against
833  *
834  * compare hid->driver->usage_table->usage_{type,code} to
835  * usage->usage_{type,code}
836  */
837 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
838 {
839         const struct hid_usage_id *id = hid->driver->usage_table;
840
841         if (!id) /* NULL means all */
842                 return 1;
843
844         for (; id->usage_type != HID_ANY_ID - 1; id++)
845                 if ((id->usage_hid == HID_ANY_ID ||
846                                 id->usage_hid == usage->hid) &&
847                                 (id->usage_type == HID_ANY_ID ||
848                                 id->usage_type == usage->type) &&
849                                 (id->usage_code == HID_ANY_ID ||
850                                  id->usage_code == usage->code))
851                         return 1;
852         return 0;
853 }
854
855 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
856                 struct hid_usage *usage, __s32 value, int interrupt)
857 {
858         struct hid_driver *hdrv = hid->driver;
859         int ret;
860
861         hid_dump_input(hid, usage, value);
862
863         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
864                 ret = hdrv->event(hid, field, usage, value);
865                 if (ret != 0) {
866                         if (ret < 0)
867                                 dbg_hid("%s's event failed with %d\n",
868                                                 hdrv->name, ret);
869                         return;
870                 }
871         }
872
873         if (hid->claimed & HID_CLAIMED_INPUT)
874                 hidinput_hid_event(hid, field, usage, value);
875         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
876                 hid->hiddev_hid_event(hid, field, usage, value);
877 }
878
879 /*
880  * Analyse a received field, and fetch the data from it. The field
881  * content is stored for next report processing (we do differential
882  * reporting to the layer).
883  */
884
885 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
886                             __u8 *data, int interrupt)
887 {
888         unsigned n;
889         unsigned count = field->report_count;
890         unsigned offset = field->report_offset;
891         unsigned size = field->report_size;
892         __s32 min = field->logical_minimum;
893         __s32 max = field->logical_maximum;
894         __s32 *value;
895
896         if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC)))
897                 return;
898
899         for (n = 0; n < count; n++) {
900
901                         value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
902                                                     extract(data, offset + n * size, size);
903
904                         if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
905                             && value[n] >= min && value[n] <= max
906                             && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
907                                 goto exit;
908         }
909
910         for (n = 0; n < count; n++) {
911
912                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
913                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
914                         continue;
915                 }
916
917                 if (field->value[n] >= min && field->value[n] <= max
918                         && field->usage[field->value[n] - min].hid
919                         && search(value, field->value[n], count))
920                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
921
922                 if (value[n] >= min && value[n] <= max
923                         && field->usage[value[n] - min].hid
924                         && search(field->value, value[n], count))
925                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
926         }
927
928         memcpy(field->value, value, count * sizeof(__s32));
929 exit:
930         kfree(value);
931 }
932
933 /*
934  * Output the field into the report.
935  */
936
937 static void hid_output_field(struct hid_field *field, __u8 *data)
938 {
939         unsigned count = field->report_count;
940         unsigned offset = field->report_offset;
941         unsigned size = field->report_size;
942         unsigned n;
943
944         for (n = 0; n < count; n++) {
945                 if (field->logical_minimum < 0) /* signed values */
946                         implement(data, offset + n * size, size, s32ton(field->value[n], size));
947                 else                            /* unsigned values */
948                         implement(data, offset + n * size, size, field->value[n]);
949         }
950 }
951
952 /*
953  * Create a report.
954  */
955
956 void hid_output_report(struct hid_report *report, __u8 *data)
957 {
958         unsigned n;
959
960         if (report->id > 0)
961                 *data++ = report->id;
962
963         memset(data, 0, ((report->size - 1) >> 3) + 1);
964         for (n = 0; n < report->maxfield; n++)
965                 hid_output_field(report->field[n], data);
966 }
967 EXPORT_SYMBOL_GPL(hid_output_report);
968
969 /*
970  * Set a field value. The report this field belongs to has to be
971  * created and transferred to the device, to set this value in the
972  * device.
973  */
974
975 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
976 {
977         unsigned size = field->report_size;
978
979         hid_dump_input(field->report->device, field->usage + offset, value);
980
981         if (offset >= field->report_count) {
982                 dbg_hid("offset (%d) exceeds report_count (%d)\n", offset, field->report_count);
983                 return -1;
984         }
985         if (field->logical_minimum < 0) {
986                 if (value != snto32(s32ton(value, size), size)) {
987                         dbg_hid("value %d is out of range\n", value);
988                         return -1;
989                 }
990         }
991         field->value[offset] = value;
992         return 0;
993 }
994 EXPORT_SYMBOL_GPL(hid_set_field);
995
996 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
997                 const u8 *data)
998 {
999         struct hid_report *report;
1000         unsigned int n = 0;     /* Normally report number is 0 */
1001
1002         /* Device uses numbered reports, data[0] is report number */
1003         if (report_enum->numbered)
1004                 n = *data;
1005
1006         report = report_enum->report_id_hash[n];
1007         if (report == NULL)
1008                 dbg_hid("undefined report_id %u received\n", n);
1009
1010         return report;
1011 }
1012
1013 void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1014                 int interrupt)
1015 {
1016         struct hid_report_enum *report_enum = hid->report_enum + type;
1017         struct hid_report *report;
1018         unsigned int a;
1019         int rsize, csize = size;
1020         u8 *cdata = data;
1021
1022         report = hid_get_report(report_enum, data);
1023         if (!report)
1024                 return;
1025
1026         if (report_enum->numbered) {
1027                 cdata++;
1028                 csize--;
1029         }
1030
1031         rsize = ((report->size - 1) >> 3) + 1;
1032
1033         if (csize < rsize) {
1034                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1035                                 csize, rsize);
1036                 memset(cdata + csize, 0, rsize - csize);
1037         }
1038
1039         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1040                 hid->hiddev_report_event(hid, report);
1041         if (hid->claimed & HID_CLAIMED_HIDRAW)
1042                 hidraw_report_event(hid, data, size);
1043
1044         for (a = 0; a < report->maxfield; a++)
1045                 hid_input_field(hid, report->field[a], cdata, interrupt);
1046
1047         if (hid->claimed & HID_CLAIMED_INPUT)
1048                 hidinput_report_event(hid, report);
1049 }
1050 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1051
1052 /**
1053  * hid_input_report - report data from lower layer (usb, bt...)
1054  *
1055  * @hid: hid device
1056  * @type: HID report type (HID_*_REPORT)
1057  * @data: report contents
1058  * @size: size of data parameter
1059  * @interrupt: distinguish between interrupt and control transfers
1060  *
1061  * This is data entry for lower layers.
1062  */
1063 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1064 {
1065         struct hid_report_enum *report_enum;
1066         struct hid_driver *hdrv;
1067         struct hid_report *report;
1068         char *buf;
1069         unsigned int i;
1070         int ret;
1071
1072         if (!hid || !hid->driver)
1073                 return -ENODEV;
1074         report_enum = hid->report_enum + type;
1075         hdrv = hid->driver;
1076
1077         if (!size) {
1078                 dbg_hid("empty report\n");
1079                 return -1;
1080         }
1081
1082         buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
1083
1084         if (!buf)
1085                 goto nomem;
1086
1087         /* dump the report */
1088         snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1089                         "\nreport (size %u) (%snumbered) = ", size, report_enum->numbered ? "" : "un");
1090         hid_debug_event(hid, buf);
1091
1092         for (i = 0; i < size; i++) {
1093                 snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1094                                 " %02x", data[i]);
1095                 hid_debug_event(hid, buf);
1096         }
1097         hid_debug_event(hid, "\n");
1098         kfree(buf);
1099
1100 nomem:
1101         report = hid_get_report(report_enum, data);
1102
1103         if (!report)
1104                 return -1;
1105
1106         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1107                 ret = hdrv->raw_event(hid, report, data, size);
1108                 if (ret != 0)
1109                         return ret < 0 ? ret : 0;
1110         }
1111
1112         hid_report_raw_event(hid, type, data, size, interrupt);
1113
1114         return 0;
1115 }
1116 EXPORT_SYMBOL_GPL(hid_input_report);
1117
1118 static bool hid_match_one_id(struct hid_device *hdev,
1119                 const struct hid_device_id *id)
1120 {
1121         return id->bus == hdev->bus &&
1122                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1123                 (id->product == HID_ANY_ID || id->product == hdev->product);
1124 }
1125
1126 static const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1127                 const struct hid_device_id *id)
1128 {
1129         for (; id->bus; id++)
1130                 if (hid_match_one_id(hdev, id))
1131                         return id;
1132
1133         return NULL;
1134 }
1135
1136 static const struct hid_device_id hid_hiddev_list[] = {
1137         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1138         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1139         { }
1140 };
1141
1142 static bool hid_hiddev(struct hid_device *hdev)
1143 {
1144         return !!hid_match_id(hdev, hid_hiddev_list);
1145 }
1146
1147 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1148 {
1149         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1150                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1151                 "Multi-Axis Controller"
1152         };
1153         const char *type, *bus;
1154         char buf[64];
1155         unsigned int i;
1156         int len;
1157
1158         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1159                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1160         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1161                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1162         if (hdev->bus != BUS_USB)
1163                 connect_mask &= ~HID_CONNECT_HIDDEV;
1164         if (hid_hiddev(hdev))
1165                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1166
1167         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1168                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1169                 hdev->claimed |= HID_CLAIMED_INPUT;
1170         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1171                         !hdev->hiddev_connect(hdev,
1172                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1173                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1174         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1175                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1176
1177         if (!hdev->claimed) {
1178                 dev_err(&hdev->dev, "claimed by neither input, hiddev nor "
1179                                 "hidraw\n");
1180                 return -ENODEV;
1181         }
1182
1183         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1184                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1185                 hdev->ff_init(hdev);
1186
1187         len = 0;
1188         if (hdev->claimed & HID_CLAIMED_INPUT)
1189                 len += sprintf(buf + len, "input");
1190         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1191                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1192                                 hdev->minor);
1193         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1194                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1195                                 ((struct hidraw *)hdev->hidraw)->minor);
1196
1197         type = "Device";
1198         for (i = 0; i < hdev->maxcollection; i++) {
1199                 struct hid_collection *col = &hdev->collection[i];
1200                 if (col->type == HID_COLLECTION_APPLICATION &&
1201                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1202                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1203                         type = types[col->usage & 0xffff];
1204                         break;
1205                 }
1206         }
1207
1208         switch (hdev->bus) {
1209         case BUS_USB:
1210                 bus = "USB";
1211                 break;
1212         case BUS_BLUETOOTH:
1213                 bus = "BLUETOOTH";
1214                 break;
1215         default:
1216                 bus = "<UNKNOWN>";
1217         }
1218
1219         dev_info(&hdev->dev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1220                         buf, bus, hdev->version >> 8, hdev->version & 0xff,
1221                         type, hdev->name, hdev->phys);
1222
1223         return 0;
1224 }
1225 EXPORT_SYMBOL_GPL(hid_connect);
1226
1227 void hid_disconnect(struct hid_device *hdev)
1228 {
1229         if (hdev->claimed & HID_CLAIMED_INPUT)
1230                 hidinput_disconnect(hdev);
1231         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1232                 hdev->hiddev_disconnect(hdev);
1233         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1234                 hidraw_disconnect(hdev);
1235 }
1236 EXPORT_SYMBOL_GPL(hid_disconnect);
1237
1238 /* a list of devices for which there is a specialized driver on HID bus */
1239 static const struct hid_device_id hid_blacklist[] = {
1240         { HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M1968) },
1241         { HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M2256) },
1242         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1243         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1244 #if defined(CONFIG_HID_ACRUX_FF) || defined(CONFIG_HID_ACRUX_FF_MODULE)
1245         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1246 #endif
1247         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) },
1248         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1249         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1250         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1251         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1252         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1253         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1254         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1255         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1256         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1257         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1258         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1259         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1260         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1261         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1262         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1263         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1264         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1265         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1266         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1267         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1268         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1269         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1270         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1271         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1272         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1273         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1274         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1275         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1276         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1277         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1278         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1279         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1280         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1281         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1282         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1283         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1284         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1285         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1286         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1287         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1288         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1289         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1290         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1291         { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
1292         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1293         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1294         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1295         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1296         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1297         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1298         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1299         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1300         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1301         { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
1302         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1303         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1304         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1305         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1306         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1307         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1308         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1309         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1310         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1311         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1312         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1313         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1314         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1315         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1316         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1317         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1318         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1319         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1320         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1321         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1322         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1323         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1324         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1325         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1326         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1327         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1328         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1329         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1330         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1331         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1332         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1333         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1334         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1335         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1336         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1337         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1338         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1339         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1340         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1341         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1342         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1343         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1344         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1345         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1346         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1347         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1348         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1349         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1350         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1351         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1352         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1353         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1354         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1355         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1356         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1357         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1358         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1359         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1360         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1361         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1362         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1363         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1364         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1365         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1366         { HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1367         { HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_PIXART_IMAGING_INC_OPTICAL_TOUCH_SCREEN) },
1368         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1369         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1370         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1371         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1372         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1373         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1374         { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, USB_DEVICE_ID_MTP) },
1375         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1376         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1377         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1378         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1379         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1380         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1381         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1382         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1383         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1384         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1385         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1386         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1387         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1388         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1389         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1390         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1391
1392         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1393         { }
1394 };
1395
1396 struct hid_dynid {
1397         struct list_head list;
1398         struct hid_device_id id;
1399 };
1400
1401 /**
1402  * store_new_id - add a new HID device ID to this driver and re-probe devices
1403  * @driver: target device driver
1404  * @buf: buffer for scanning device ID data
1405  * @count: input size
1406  *
1407  * Adds a new dynamic hid device ID to this driver,
1408  * and causes the driver to probe for all devices again.
1409  */
1410 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1411                 size_t count)
1412 {
1413         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1414         struct hid_dynid *dynid;
1415         __u32 bus, vendor, product;
1416         unsigned long driver_data = 0;
1417         int ret;
1418
1419         ret = sscanf(buf, "%x %x %x %lx",
1420                         &bus, &vendor, &product, &driver_data);
1421         if (ret < 3)
1422                 return -EINVAL;
1423
1424         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1425         if (!dynid)
1426                 return -ENOMEM;
1427
1428         dynid->id.bus = bus;
1429         dynid->id.vendor = vendor;
1430         dynid->id.product = product;
1431         dynid->id.driver_data = driver_data;
1432
1433         spin_lock(&hdrv->dyn_lock);
1434         list_add_tail(&dynid->list, &hdrv->dyn_list);
1435         spin_unlock(&hdrv->dyn_lock);
1436
1437         ret = 0;
1438         if (get_driver(&hdrv->driver)) {
1439                 ret = driver_attach(&hdrv->driver);
1440                 put_driver(&hdrv->driver);
1441         }
1442
1443         return ret ? : count;
1444 }
1445 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1446
1447 static void hid_free_dynids(struct hid_driver *hdrv)
1448 {
1449         struct hid_dynid *dynid, *n;
1450
1451         spin_lock(&hdrv->dyn_lock);
1452         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1453                 list_del(&dynid->list);
1454                 kfree(dynid);
1455         }
1456         spin_unlock(&hdrv->dyn_lock);
1457 }
1458
1459 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1460                 struct hid_driver *hdrv)
1461 {
1462         struct hid_dynid *dynid;
1463
1464         spin_lock(&hdrv->dyn_lock);
1465         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1466                 if (hid_match_one_id(hdev, &dynid->id)) {
1467                         spin_unlock(&hdrv->dyn_lock);
1468                         return &dynid->id;
1469                 }
1470         }
1471         spin_unlock(&hdrv->dyn_lock);
1472
1473         return hid_match_id(hdev, hdrv->id_table);
1474 }
1475
1476 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1477 {
1478         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1479         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1480
1481         if (!hid_match_device(hdev, hdrv))
1482                 return 0;
1483
1484         /* generic wants all non-blacklisted */
1485         if (!strncmp(hdrv->name, "generic-", 8))
1486                 return !hid_match_id(hdev, hid_blacklist);
1487
1488         return 1;
1489 }
1490
1491 static int hid_device_probe(struct device *dev)
1492 {
1493         struct hid_driver *hdrv = container_of(dev->driver,
1494                         struct hid_driver, driver);
1495         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1496         const struct hid_device_id *id;
1497         int ret = 0;
1498
1499         if (!hdev->driver) {
1500                 id = hid_match_device(hdev, hdrv);
1501                 if (id == NULL)
1502                         return -ENODEV;
1503
1504                 hdev->driver = hdrv;
1505                 if (hdrv->probe) {
1506                         ret = hdrv->probe(hdev, id);
1507                 } else { /* default probe */
1508                         ret = hid_parse(hdev);
1509                         if (!ret)
1510                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1511                 }
1512                 if (ret)
1513                         hdev->driver = NULL;
1514         }
1515         return ret;
1516 }
1517
1518 static int hid_device_remove(struct device *dev)
1519 {
1520         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1521         struct hid_driver *hdrv = hdev->driver;
1522
1523         if (hdrv) {
1524                 if (hdrv->remove)
1525                         hdrv->remove(hdev);
1526                 else /* default remove */
1527                         hid_hw_stop(hdev);
1528                 hdev->driver = NULL;
1529         }
1530
1531         return 0;
1532 }
1533
1534 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1535 {
1536         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1537
1538         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
1539                         hdev->bus, hdev->vendor, hdev->product))
1540                 return -ENOMEM;
1541
1542         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
1543                 return -ENOMEM;
1544
1545         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
1546                 return -ENOMEM;
1547
1548         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
1549                 return -ENOMEM;
1550
1551         if (add_uevent_var(env, "MODALIAS=hid:b%04Xv%08Xp%08X",
1552                         hdev->bus, hdev->vendor, hdev->product))
1553                 return -ENOMEM;
1554
1555         return 0;
1556 }
1557
1558 static struct bus_type hid_bus_type = {
1559         .name           = "hid",
1560         .match          = hid_bus_match,
1561         .probe          = hid_device_probe,
1562         .remove         = hid_device_remove,
1563         .uevent         = hid_uevent,
1564 };
1565
1566 /* a list of devices that shouldn't be handled by HID core at all */
1567 static const struct hid_device_id hid_ignore_list[] = {
1568         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
1569         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
1570         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
1571         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
1572         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
1573         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
1574         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
1575         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
1576         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
1577         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
1578         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
1579         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
1580         { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_T91MT)},
1581         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
1582         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
1583         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
1584         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
1585         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
1586         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
1587         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
1588         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
1589         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
1590         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
1591         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
1592         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
1593         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
1594         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
1595         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
1596         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
1597         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0003) },
1598         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
1599         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
1600         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
1601         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
1602         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
1603         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
1604         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
1605         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
1606         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
1607         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
1608         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
1609         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
1610         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
1611         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
1612         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
1613         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
1614         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
1615         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
1616         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
1617         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
1618         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
1619         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
1620         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
1621         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
1622         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
1623         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
1624         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
1625         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
1626         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
1627         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
1628         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
1629         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
1630         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
1631         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
1632         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
1633         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
1634         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
1635         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
1636         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
1637         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
1638         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
1639         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
1640         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
1641         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
1642         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
1643         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
1644         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
1645         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
1646         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
1647         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
1648         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
1649         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
1650         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
1651         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
1652         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
1653         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
1654         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
1655         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
1656         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
1657         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
1658         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
1659         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
1660         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
1661         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
1662         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
1663         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
1664         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
1665         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
1666         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
1667         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
1668         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
1669         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
1670         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY1) },
1671         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
1672         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
1673         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
1674         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
1675         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
1676         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
1677         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
1678         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
1679         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
1680         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
1681         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
1682         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
1683         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
1684         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
1685         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
1686         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
1687         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
1688         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
1689         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
1690         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
1691         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
1692         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
1693         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
1694         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
1695         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
1696         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
1697         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
1698         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
1699         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
1700         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
1701         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
1702         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
1703         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
1704         { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
1705         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
1706         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
1707         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
1708         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
1709         { }
1710 };
1711
1712 /**
1713  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
1714  *
1715  * There are composite devices for which we want to ignore only a certain
1716  * interface. This is a list of devices for which only the mouse interface will
1717  * be ignored. This allows a dedicated driver to take care of the interface.
1718  */
1719 static const struct hid_device_id hid_mouse_ignore_list[] = {
1720         /* appletouch driver */
1721         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1722         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1723         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1724         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1725         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1726         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1727         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1728         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1729         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1730         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1731         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1732         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1733         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1734         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1735         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1736         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1737         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1738         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1739         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1740         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1741         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1742         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1743         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1744         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1745         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1746         { }
1747 };
1748
1749 static bool hid_ignore(struct hid_device *hdev)
1750 {
1751         switch (hdev->vendor) {
1752         case USB_VENDOR_ID_CODEMERCS:
1753                 /* ignore all Code Mercenaries IOWarrior devices */
1754                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
1755                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
1756                         return true;
1757                 break;
1758         case USB_VENDOR_ID_LOGITECH:
1759                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
1760                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
1761                         return true;
1762                 break;
1763         case USB_VENDOR_ID_SOUNDGRAPH:
1764                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
1765                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
1766                         return true;
1767                 break;
1768         }
1769
1770         if (hdev->type == HID_TYPE_USBMOUSE &&
1771                         hid_match_id(hdev, hid_mouse_ignore_list))
1772                 return true;
1773
1774         return !!hid_match_id(hdev, hid_ignore_list);
1775 }
1776
1777 int hid_add_device(struct hid_device *hdev)
1778 {
1779         static atomic_t id = ATOMIC_INIT(0);
1780         int ret;
1781
1782         if (WARN_ON(hdev->status & HID_STAT_ADDED))
1783                 return -EBUSY;
1784
1785         /* we need to kill them here, otherwise they will stay allocated to
1786          * wait for coming driver */
1787         if (!(hdev->quirks & HID_QUIRK_NO_IGNORE)
1788             && (hid_ignore(hdev) || (hdev->quirks & HID_QUIRK_IGNORE)))
1789                 return -ENODEV;
1790
1791         /* XXX hack, any other cleaner solution after the driver core
1792          * is converted to allow more than 20 bytes as the device name? */
1793         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
1794                      hdev->vendor, hdev->product, atomic_inc_return(&id));
1795
1796         hid_debug_register(hdev, dev_name(&hdev->dev));
1797         ret = device_add(&hdev->dev);
1798         if (!ret)
1799                 hdev->status |= HID_STAT_ADDED;
1800         else
1801                 hid_debug_unregister(hdev);
1802
1803         return ret;
1804 }
1805 EXPORT_SYMBOL_GPL(hid_add_device);
1806
1807 /**
1808  * hid_allocate_device - allocate new hid device descriptor
1809  *
1810  * Allocate and initialize hid device, so that hid_destroy_device might be
1811  * used to free it.
1812  *
1813  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
1814  * error value.
1815  */
1816 struct hid_device *hid_allocate_device(void)
1817 {
1818         struct hid_device *hdev;
1819         unsigned int i;
1820         int ret = -ENOMEM;
1821
1822         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
1823         if (hdev == NULL)
1824                 return ERR_PTR(ret);
1825
1826         device_initialize(&hdev->dev);
1827         hdev->dev.release = hid_device_release;
1828         hdev->dev.bus = &hid_bus_type;
1829
1830         hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
1831                         sizeof(struct hid_collection), GFP_KERNEL);
1832         if (hdev->collection == NULL)
1833                 goto err;
1834         hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
1835
1836         for (i = 0; i < HID_REPORT_TYPES; i++)
1837                 INIT_LIST_HEAD(&hdev->report_enum[i].report_list);
1838
1839         init_waitqueue_head(&hdev->debug_wait);
1840         INIT_LIST_HEAD(&hdev->debug_list);
1841
1842         return hdev;
1843 err:
1844         put_device(&hdev->dev);
1845         return ERR_PTR(ret);
1846 }
1847 EXPORT_SYMBOL_GPL(hid_allocate_device);
1848
1849 static void hid_remove_device(struct hid_device *hdev)
1850 {
1851         if (hdev->status & HID_STAT_ADDED) {
1852                 device_del(&hdev->dev);
1853                 hid_debug_unregister(hdev);
1854                 hdev->status &= ~HID_STAT_ADDED;
1855         }
1856 }
1857
1858 /**
1859  * hid_destroy_device - free previously allocated device
1860  *
1861  * @hdev: hid device
1862  *
1863  * If you allocate hid_device through hid_allocate_device, you should ever
1864  * free by this function.
1865  */
1866 void hid_destroy_device(struct hid_device *hdev)
1867 {
1868         hid_remove_device(hdev);
1869         put_device(&hdev->dev);
1870 }
1871 EXPORT_SYMBOL_GPL(hid_destroy_device);
1872
1873 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
1874                 const char *mod_name)
1875 {
1876         int ret;
1877
1878         hdrv->driver.name = hdrv->name;
1879         hdrv->driver.bus = &hid_bus_type;
1880         hdrv->driver.owner = owner;
1881         hdrv->driver.mod_name = mod_name;
1882
1883         INIT_LIST_HEAD(&hdrv->dyn_list);
1884         spin_lock_init(&hdrv->dyn_lock);
1885
1886         ret = driver_register(&hdrv->driver);
1887         if (ret)
1888                 return ret;
1889
1890         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
1891         if (ret)
1892                 driver_unregister(&hdrv->driver);
1893
1894         return ret;
1895 }
1896 EXPORT_SYMBOL_GPL(__hid_register_driver);
1897
1898 void hid_unregister_driver(struct hid_driver *hdrv)
1899 {
1900         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
1901         driver_unregister(&hdrv->driver);
1902         hid_free_dynids(hdrv);
1903 }
1904 EXPORT_SYMBOL_GPL(hid_unregister_driver);
1905
1906 int hid_check_keys_pressed(struct hid_device *hid)
1907 {
1908         struct hid_input *hidinput;
1909         int i;
1910
1911         if (!(hid->claimed & HID_CLAIMED_INPUT))
1912                 return 0;
1913
1914         list_for_each_entry(hidinput, &hid->inputs, list) {
1915                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
1916                         if (hidinput->input->key[i])
1917                                 return 1;
1918         }
1919
1920         return 0;
1921 }
1922
1923 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
1924
1925 static int __init hid_init(void)
1926 {
1927         int ret;
1928
1929         if (hid_debug)
1930                 printk(KERN_WARNING "HID: hid_debug is now used solely for parser and driver debugging.\n"
1931                                 "HID: debugfs is now used for inspecting the device (report descriptor, reports)\n");
1932
1933         ret = bus_register(&hid_bus_type);
1934         if (ret) {
1935                 printk(KERN_ERR "HID: can't register hid bus\n");
1936                 goto err;
1937         }
1938
1939         ret = hidraw_init();
1940         if (ret)
1941                 goto err_bus;
1942
1943         hid_debug_init();
1944
1945         return 0;
1946 err_bus:
1947         bus_unregister(&hid_bus_type);
1948 err:
1949         return ret;
1950 }
1951
1952 static void __exit hid_exit(void)
1953 {
1954         hid_debug_exit();
1955         hidraw_exit();
1956         bus_unregister(&hid_bus_type);
1957 }
1958
1959 module_init(hid_init);
1960 module_exit(hid_exit);
1961
1962 MODULE_AUTHOR("Andreas Gal");
1963 MODULE_AUTHOR("Vojtech Pavlik");
1964 MODULE_AUTHOR("Jiri Kosina");
1965 MODULE_LICENSE(DRIVER_LICENSE);
1966