]> nv-tegra.nvidia Code Review - linux-2.6.git/blob - drivers/hid/hid-core.c
Merge branch 'master' into upstream
[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 static 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
79 /*
80  * Register a new field for this report.
81  */
82
83 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
84 {
85         struct hid_field *field;
86
87         if (report->maxfield == HID_MAX_FIELDS) {
88                 dbg_hid("too many fields in report\n");
89                 return NULL;
90         }
91
92         if (!(field = kzalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
93                 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
94
95         field->index = report->maxfield++;
96         report->field[field->index] = field;
97         field->usage = (struct hid_usage *)(field + 1);
98         field->value = (s32 *)(field->usage + usages);
99         field->report = report;
100
101         return field;
102 }
103
104 /*
105  * Open a collection. The type/usage is pushed on the stack.
106  */
107
108 static int open_collection(struct hid_parser *parser, unsigned type)
109 {
110         struct hid_collection *collection;
111         unsigned usage;
112
113         usage = parser->local.usage[0];
114
115         if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
116                 dbg_hid("collection stack overflow\n");
117                 return -1;
118         }
119
120         if (parser->device->maxcollection == parser->device->collection_size) {
121                 collection = kmalloc(sizeof(struct hid_collection) *
122                                 parser->device->collection_size * 2, GFP_KERNEL);
123                 if (collection == NULL) {
124                         dbg_hid("failed to reallocate collection array\n");
125                         return -1;
126                 }
127                 memcpy(collection, parser->device->collection,
128                         sizeof(struct hid_collection) *
129                         parser->device->collection_size);
130                 memset(collection + parser->device->collection_size, 0,
131                         sizeof(struct hid_collection) *
132                         parser->device->collection_size);
133                 kfree(parser->device->collection);
134                 parser->device->collection = collection;
135                 parser->device->collection_size *= 2;
136         }
137
138         parser->collection_stack[parser->collection_stack_ptr++] =
139                 parser->device->maxcollection;
140
141         collection = parser->device->collection +
142                 parser->device->maxcollection++;
143         collection->type = type;
144         collection->usage = usage;
145         collection->level = parser->collection_stack_ptr - 1;
146
147         if (type == HID_COLLECTION_APPLICATION)
148                 parser->device->maxapplication++;
149
150         return 0;
151 }
152
153 /*
154  * Close a collection.
155  */
156
157 static int close_collection(struct hid_parser *parser)
158 {
159         if (!parser->collection_stack_ptr) {
160                 dbg_hid("collection stack underflow\n");
161                 return -1;
162         }
163         parser->collection_stack_ptr--;
164         return 0;
165 }
166
167 /*
168  * Climb up the stack, search for the specified collection type
169  * and return the usage.
170  */
171
172 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
173 {
174         int n;
175         for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
176                 if (parser->device->collection[parser->collection_stack[n]].type == type)
177                         return parser->device->collection[parser->collection_stack[n]].usage;
178         return 0; /* we know nothing about this usage type */
179 }
180
181 /*
182  * Add a usage to the temporary parser table.
183  */
184
185 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
186 {
187         if (parser->local.usage_index >= HID_MAX_USAGES) {
188                 dbg_hid("usage index exceeded\n");
189                 return -1;
190         }
191         parser->local.usage[parser->local.usage_index] = usage;
192         parser->local.collection_index[parser->local.usage_index] =
193                 parser->collection_stack_ptr ?
194                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
195         parser->local.usage_index++;
196         return 0;
197 }
198
199 /*
200  * Register a new field for this report.
201  */
202
203 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
204 {
205         struct hid_report *report;
206         struct hid_field *field;
207         int usages;
208         unsigned offset;
209         int i;
210
211         if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
212                 dbg_hid("hid_register_report failed\n");
213                 return -1;
214         }
215
216         if (parser->global.logical_maximum < parser->global.logical_minimum) {
217                 dbg_hid("logical range invalid %d %d\n", parser->global.logical_minimum, parser->global.logical_maximum);
218                 return -1;
219         }
220
221         offset = report->size;
222         report->size += parser->global.report_size * parser->global.report_count;
223
224         if (!parser->local.usage_index) /* Ignore padding fields */
225                 return 0;
226
227         usages = max_t(int, parser->local.usage_index, parser->global.report_count);
228
229         if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
230                 return 0;
231
232         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
233         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
234         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
235
236         for (i = 0; i < usages; i++) {
237                 int j = i;
238                 /* Duplicate the last usage we parsed if we have excess values */
239                 if (i >= parser->local.usage_index)
240                         j = parser->local.usage_index - 1;
241                 field->usage[i].hid = parser->local.usage[j];
242                 field->usage[i].collection_index =
243                         parser->local.collection_index[j];
244         }
245
246         field->maxusage = usages;
247         field->flags = flags;
248         field->report_offset = offset;
249         field->report_type = report_type;
250         field->report_size = parser->global.report_size;
251         field->report_count = parser->global.report_count;
252         field->logical_minimum = parser->global.logical_minimum;
253         field->logical_maximum = parser->global.logical_maximum;
254         field->physical_minimum = parser->global.physical_minimum;
255         field->physical_maximum = parser->global.physical_maximum;
256         field->unit_exponent = parser->global.unit_exponent;
257         field->unit = parser->global.unit;
258
259         return 0;
260 }
261
262 /*
263  * Read data value from item.
264  */
265
266 static u32 item_udata(struct hid_item *item)
267 {
268         switch (item->size) {
269         case 1: return item->data.u8;
270         case 2: return item->data.u16;
271         case 4: return item->data.u32;
272         }
273         return 0;
274 }
275
276 static s32 item_sdata(struct hid_item *item)
277 {
278         switch (item->size) {
279         case 1: return item->data.s8;
280         case 2: return item->data.s16;
281         case 4: return item->data.s32;
282         }
283         return 0;
284 }
285
286 /*
287  * Process a global item.
288  */
289
290 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
291 {
292         switch (item->tag) {
293         case HID_GLOBAL_ITEM_TAG_PUSH:
294
295                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
296                         dbg_hid("global enviroment stack overflow\n");
297                         return -1;
298                 }
299
300                 memcpy(parser->global_stack + parser->global_stack_ptr++,
301                         &parser->global, sizeof(struct hid_global));
302                 return 0;
303
304         case HID_GLOBAL_ITEM_TAG_POP:
305
306                 if (!parser->global_stack_ptr) {
307                         dbg_hid("global enviroment stack underflow\n");
308                         return -1;
309                 }
310
311                 memcpy(&parser->global, parser->global_stack +
312                         --parser->global_stack_ptr, sizeof(struct hid_global));
313                 return 0;
314
315         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
316                 parser->global.usage_page = item_udata(item);
317                 return 0;
318
319         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
320                 parser->global.logical_minimum = item_sdata(item);
321                 return 0;
322
323         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
324                 if (parser->global.logical_minimum < 0)
325                         parser->global.logical_maximum = item_sdata(item);
326                 else
327                         parser->global.logical_maximum = item_udata(item);
328                 return 0;
329
330         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
331                 parser->global.physical_minimum = item_sdata(item);
332                 return 0;
333
334         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
335                 if (parser->global.physical_minimum < 0)
336                         parser->global.physical_maximum = item_sdata(item);
337                 else
338                         parser->global.physical_maximum = item_udata(item);
339                 return 0;
340
341         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
342                 parser->global.unit_exponent = item_sdata(item);
343                 return 0;
344
345         case HID_GLOBAL_ITEM_TAG_UNIT:
346                 parser->global.unit = item_udata(item);
347                 return 0;
348
349         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
350                 parser->global.report_size = item_udata(item);
351                 if (parser->global.report_size > 32) {
352                         dbg_hid("invalid report_size %d\n",
353                                         parser->global.report_size);
354                         return -1;
355                 }
356                 return 0;
357
358         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
359                 parser->global.report_count = item_udata(item);
360                 if (parser->global.report_count > HID_MAX_USAGES) {
361                         dbg_hid("invalid report_count %d\n",
362                                         parser->global.report_count);
363                         return -1;
364                 }
365                 return 0;
366
367         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
368                 parser->global.report_id = item_udata(item);
369                 if (parser->global.report_id == 0) {
370                         dbg_hid("report_id 0 is invalid\n");
371                         return -1;
372                 }
373                 return 0;
374
375         default:
376                 dbg_hid("unknown global tag 0x%x\n", item->tag);
377                 return -1;
378         }
379 }
380
381 /*
382  * Process a local item.
383  */
384
385 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
386 {
387         __u32 data;
388         unsigned n;
389
390         /* Local delimiter could have value 0, which allows size to be 0 */
391         if (item->size == 0 && item->tag != HID_LOCAL_ITEM_TAG_DELIMITER) {
392                 dbg_hid("item data expected for local item\n");
393                 return -1;
394         }
395
396         data = item_udata(item);
397
398         switch (item->tag) {
399         case HID_LOCAL_ITEM_TAG_DELIMITER:
400
401                 if (data) {
402                         /*
403                          * We treat items before the first delimiter
404                          * as global to all usage sets (branch 0).
405                          * In the moment we process only these global
406                          * items and the first delimiter set.
407                          */
408                         if (parser->local.delimiter_depth != 0) {
409                                 dbg_hid("nested delimiters\n");
410                                 return -1;
411                         }
412                         parser->local.delimiter_depth++;
413                         parser->local.delimiter_branch++;
414                 } else {
415                         if (parser->local.delimiter_depth < 1) {
416                                 dbg_hid("bogus close delimiter\n");
417                                 return -1;
418                         }
419                         parser->local.delimiter_depth--;
420                 }
421                 return 1;
422
423         case HID_LOCAL_ITEM_TAG_USAGE:
424
425                 if (parser->local.delimiter_branch > 1) {
426                         dbg_hid("alternative usage ignored\n");
427                         return 0;
428                 }
429
430                 if (item->size <= 2)
431                         data = (parser->global.usage_page << 16) + data;
432
433                 return hid_add_usage(parser, data);
434
435         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
436
437                 if (parser->local.delimiter_branch > 1) {
438                         dbg_hid("alternative usage ignored\n");
439                         return 0;
440                 }
441
442                 if (item->size <= 2)
443                         data = (parser->global.usage_page << 16) + data;
444
445                 parser->local.usage_minimum = data;
446                 return 0;
447
448         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
449
450                 if (parser->local.delimiter_branch > 1) {
451                         dbg_hid("alternative usage ignored\n");
452                         return 0;
453                 }
454
455                 if (item->size <= 2)
456                         data = (parser->global.usage_page << 16) + data;
457
458                 for (n = parser->local.usage_minimum; n <= data; n++)
459                         if (hid_add_usage(parser, n)) {
460                                 dbg_hid("hid_add_usage failed\n");
461                                 return -1;
462                         }
463                 return 0;
464
465         default:
466
467                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
468                 return 0;
469         }
470         return 0;
471 }
472
473 /*
474  * Process a main item.
475  */
476
477 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
478 {
479         __u32 data;
480         int ret;
481
482         data = item_udata(item);
483
484         switch (item->tag) {
485         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
486                 ret = open_collection(parser, data & 0xff);
487                 break;
488         case HID_MAIN_ITEM_TAG_END_COLLECTION:
489                 ret = close_collection(parser);
490                 break;
491         case HID_MAIN_ITEM_TAG_INPUT:
492                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
493                 break;
494         case HID_MAIN_ITEM_TAG_OUTPUT:
495                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
496                 break;
497         case HID_MAIN_ITEM_TAG_FEATURE:
498                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
499                 break;
500         default:
501                 dbg_hid("unknown main item tag 0x%x\n", item->tag);
502                 ret = 0;
503         }
504
505         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
506
507         return ret;
508 }
509
510 /*
511  * Process a reserved item.
512  */
513
514 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
515 {
516         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
517         return 0;
518 }
519
520 /*
521  * Free a report and all registered fields. The field->usage and
522  * field->value table's are allocated behind the field, so we need
523  * only to free(field) itself.
524  */
525
526 static void hid_free_report(struct hid_report *report)
527 {
528         unsigned n;
529
530         for (n = 0; n < report->maxfield; n++)
531                 kfree(report->field[n]);
532         kfree(report);
533 }
534
535 /*
536  * Free a device structure, all reports, and all fields.
537  */
538
539 static void hid_device_release(struct device *dev)
540 {
541         struct hid_device *device = container_of(dev, struct hid_device, dev);
542         unsigned i, j;
543
544         for (i = 0; i < HID_REPORT_TYPES; i++) {
545                 struct hid_report_enum *report_enum = device->report_enum + i;
546
547                 for (j = 0; j < 256; j++) {
548                         struct hid_report *report = report_enum->report_id_hash[j];
549                         if (report)
550                                 hid_free_report(report);
551                 }
552         }
553
554         kfree(device->rdesc);
555         kfree(device->collection);
556         kfree(device);
557 }
558
559 /*
560  * Fetch a report description item from the data stream. We support long
561  * items, though they are not used yet.
562  */
563
564 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
565 {
566         u8 b;
567
568         if ((end - start) <= 0)
569                 return NULL;
570
571         b = *start++;
572
573         item->type = (b >> 2) & 3;
574         item->tag  = (b >> 4) & 15;
575
576         if (item->tag == HID_ITEM_TAG_LONG) {
577
578                 item->format = HID_ITEM_FORMAT_LONG;
579
580                 if ((end - start) < 2)
581                         return NULL;
582
583                 item->size = *start++;
584                 item->tag  = *start++;
585
586                 if ((end - start) < item->size)
587                         return NULL;
588
589                 item->data.longdata = start;
590                 start += item->size;
591                 return start;
592         }
593
594         item->format = HID_ITEM_FORMAT_SHORT;
595         item->size = b & 3;
596
597         switch (item->size) {
598         case 0:
599                 return start;
600
601         case 1:
602                 if ((end - start) < 1)
603                         return NULL;
604                 item->data.u8 = *start++;
605                 return start;
606
607         case 2:
608                 if ((end - start) < 2)
609                         return NULL;
610                 item->data.u16 = get_unaligned_le16(start);
611                 start = (__u8 *)((__le16 *)start + 1);
612                 return start;
613
614         case 3:
615                 item->size++;
616                 if ((end - start) < 4)
617                         return NULL;
618                 item->data.u32 = get_unaligned_le32(start);
619                 start = (__u8 *)((__le32 *)start + 1);
620                 return start;
621         }
622
623         return NULL;
624 }
625
626 /**
627  * hid_parse_report - parse device report
628  *
629  * @device: hid device
630  * @start: report start
631  * @size: report size
632  *
633  * Parse a report description into a hid_device structure. Reports are
634  * enumerated, fields are attached to these reports.
635  * 0 returned on success, otherwise nonzero error value.
636  */
637 int hid_parse_report(struct hid_device *device, __u8 *start,
638                 unsigned size)
639 {
640         struct hid_parser *parser;
641         struct hid_item item;
642         __u8 *end;
643         int ret;
644         static int (*dispatch_type[])(struct hid_parser *parser,
645                                       struct hid_item *item) = {
646                 hid_parser_main,
647                 hid_parser_global,
648                 hid_parser_local,
649                 hid_parser_reserved
650         };
651
652         if (device->driver->report_fixup)
653                 device->driver->report_fixup(device, start, size);
654
655         device->rdesc = kmalloc(size, GFP_KERNEL);
656         if (device->rdesc == NULL)
657                 return -ENOMEM;
658         memcpy(device->rdesc, start, size);
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 bitsused = offset + count * size;
943         unsigned n;
944
945         /* make sure the unused bits in the last byte are zeros */
946         if (count > 0 && size > 0 && (bitsused % 8) != 0)
947                 data[(bitsused-1)/8] &= (1 << (bitsused % 8)) - 1;
948
949         for (n = 0; n < count; n++) {
950                 if (field->logical_minimum < 0) /* signed values */
951                         implement(data, offset + n * size, size, s32ton(field->value[n], size));
952                 else                            /* unsigned values */
953                         implement(data, offset + n * size, size, field->value[n]);
954         }
955 }
956
957 /*
958  * Create a report.
959  */
960
961 void hid_output_report(struct hid_report *report, __u8 *data)
962 {
963         unsigned n;
964
965         if (report->id > 0)
966                 *data++ = report->id;
967
968         for (n = 0; n < report->maxfield; n++)
969                 hid_output_field(report->field[n], data);
970 }
971 EXPORT_SYMBOL_GPL(hid_output_report);
972
973 /*
974  * Set a field value. The report this field belongs to has to be
975  * created and transferred to the device, to set this value in the
976  * device.
977  */
978
979 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
980 {
981         unsigned size = field->report_size;
982
983         hid_dump_input(field->report->device, field->usage + offset, value);
984
985         if (offset >= field->report_count) {
986                 dbg_hid("offset (%d) exceeds report_count (%d)\n", offset, field->report_count);
987                 return -1;
988         }
989         if (field->logical_minimum < 0) {
990                 if (value != snto32(s32ton(value, size), size)) {
991                         dbg_hid("value %d is out of range\n", value);
992                         return -1;
993                 }
994         }
995         field->value[offset] = value;
996         return 0;
997 }
998 EXPORT_SYMBOL_GPL(hid_set_field);
999
1000 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1001                 const u8 *data)
1002 {
1003         struct hid_report *report;
1004         unsigned int n = 0;     /* Normally report number is 0 */
1005
1006         /* Device uses numbered reports, data[0] is report number */
1007         if (report_enum->numbered)
1008                 n = *data;
1009
1010         report = report_enum->report_id_hash[n];
1011         if (report == NULL)
1012                 dbg_hid("undefined report_id %u received\n", n);
1013
1014         return report;
1015 }
1016
1017 void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1018                 int interrupt)
1019 {
1020         struct hid_report_enum *report_enum = hid->report_enum + type;
1021         struct hid_report *report;
1022         unsigned int a;
1023         int rsize, csize = size;
1024         u8 *cdata = data;
1025
1026         report = hid_get_report(report_enum, data);
1027         if (!report)
1028                 return;
1029
1030         if (report_enum->numbered) {
1031                 cdata++;
1032                 csize--;
1033         }
1034
1035         rsize = ((report->size - 1) >> 3) + 1;
1036
1037         if (csize < rsize) {
1038                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1039                                 csize, rsize);
1040                 memset(cdata + csize, 0, rsize - csize);
1041         }
1042
1043         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1044                 hid->hiddev_report_event(hid, report);
1045         if (hid->claimed & HID_CLAIMED_HIDRAW) {
1046                 /* numbered reports need to be passed with the report num */
1047                 if (report_enum->numbered)
1048                         hidraw_report_event(hid, data - 1, size + 1);
1049                 else
1050                         hidraw_report_event(hid, data, size);
1051         }
1052
1053         for (a = 0; a < report->maxfield; a++)
1054                 hid_input_field(hid, report->field[a], cdata, interrupt);
1055
1056         if (hid->claimed & HID_CLAIMED_INPUT)
1057                 hidinput_report_event(hid, report);
1058 }
1059 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1060
1061 /**
1062  * hid_input_report - report data from lower layer (usb, bt...)
1063  *
1064  * @hid: hid device
1065  * @type: HID report type (HID_*_REPORT)
1066  * @data: report contents
1067  * @size: size of data parameter
1068  * @interrupt: distinguish between interrupt and control transfers
1069  *
1070  * This is data entry for lower layers.
1071  */
1072 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1073 {
1074         struct hid_report_enum *report_enum;
1075         struct hid_driver *hdrv;
1076         struct hid_report *report;
1077         char *buf;
1078         unsigned int i;
1079         int ret;
1080
1081         if (!hid || !hid->driver)
1082                 return -ENODEV;
1083         report_enum = hid->report_enum + type;
1084         hdrv = hid->driver;
1085
1086         if (!size) {
1087                 dbg_hid("empty report\n");
1088                 return -1;
1089         }
1090
1091         buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
1092
1093         if (!buf) {
1094                 report = hid_get_report(report_enum, data);
1095                 goto nomem;
1096         }
1097
1098         snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1099                         "\nreport (size %u) (%snumbered)\n", size, report_enum->numbered ? "" : "un");
1100         hid_debug_event(hid, buf);
1101
1102         report = hid_get_report(report_enum, data);
1103         if (!report) {
1104                 kfree(buf);
1105                 return -1;
1106         }
1107
1108         /* dump the report */
1109         snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1110                         "report %d (size %u) = ", report->id, size);
1111         hid_debug_event(hid, buf);
1112         for (i = 0; i < size; i++) {
1113                 snprintf(buf, HID_DEBUG_BUFSIZE - 1,
1114                                 " %02x", data[i]);
1115                 hid_debug_event(hid, buf);
1116         }
1117         hid_debug_event(hid, "\n");
1118
1119         kfree(buf);
1120
1121 nomem:
1122         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1123                 ret = hdrv->raw_event(hid, report, data, size);
1124                 if (ret != 0)
1125                         return ret < 0 ? ret : 0;
1126         }
1127
1128         hid_report_raw_event(hid, type, data, size, interrupt);
1129
1130         return 0;
1131 }
1132 EXPORT_SYMBOL_GPL(hid_input_report);
1133
1134 static bool hid_match_one_id(struct hid_device *hdev,
1135                 const struct hid_device_id *id)
1136 {
1137         return id->bus == hdev->bus &&
1138                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1139                 (id->product == HID_ANY_ID || id->product == hdev->product);
1140 }
1141
1142 static const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1143                 const struct hid_device_id *id)
1144 {
1145         for (; id->bus; id++)
1146                 if (hid_match_one_id(hdev, id))
1147                         return id;
1148
1149         return NULL;
1150 }
1151
1152 static const struct hid_device_id hid_hiddev_list[] = {
1153         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1154         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1155         { }
1156 };
1157
1158 static bool hid_hiddev(struct hid_device *hdev)
1159 {
1160         return !!hid_match_id(hdev, hid_hiddev_list);
1161 }
1162
1163 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1164 {
1165         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1166                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1167                 "Multi-Axis Controller"
1168         };
1169         const char *type, *bus;
1170         char buf[64];
1171         unsigned int i;
1172         int len;
1173
1174         if (hdev->bus != BUS_USB)
1175                 connect_mask &= ~HID_CONNECT_HIDDEV;
1176         if (hid_hiddev(hdev))
1177                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1178
1179         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1180                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1181                 hdev->claimed |= HID_CLAIMED_INPUT;
1182         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1183                         !hdev->hiddev_connect(hdev,
1184                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1185                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1186         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1187                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1188
1189         if (!hdev->claimed) {
1190                 dev_err(&hdev->dev, "claimed by neither input, hiddev nor "
1191                                 "hidraw\n");
1192                 return -ENODEV;
1193         }
1194
1195         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1196                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1197                 hdev->ff_init(hdev);
1198
1199         len = 0;
1200         if (hdev->claimed & HID_CLAIMED_INPUT)
1201                 len += sprintf(buf + len, "input");
1202         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1203                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1204                                 hdev->minor);
1205         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1206                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1207                                 ((struct hidraw *)hdev->hidraw)->minor);
1208
1209         type = "Device";
1210         for (i = 0; i < hdev->maxcollection; i++) {
1211                 struct hid_collection *col = &hdev->collection[i];
1212                 if (col->type == HID_COLLECTION_APPLICATION &&
1213                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1214                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1215                         type = types[col->usage & 0xffff];
1216                         break;
1217                 }
1218         }
1219
1220         switch (hdev->bus) {
1221         case BUS_USB:
1222                 bus = "USB";
1223                 break;
1224         case BUS_BLUETOOTH:
1225                 bus = "BLUETOOTH";
1226                 break;
1227         default:
1228                 bus = "<UNKNOWN>";
1229         }
1230
1231         dev_info(&hdev->dev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1232                         buf, bus, hdev->version >> 8, hdev->version & 0xff,
1233                         type, hdev->name, hdev->phys);
1234
1235         return 0;
1236 }
1237 EXPORT_SYMBOL_GPL(hid_connect);
1238
1239 void hid_disconnect(struct hid_device *hdev)
1240 {
1241         if (hdev->claimed & HID_CLAIMED_INPUT)
1242                 hidinput_disconnect(hdev);
1243         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1244                 hdev->hiddev_disconnect(hdev);
1245         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1246                 hidraw_disconnect(hdev);
1247 }
1248 EXPORT_SYMBOL_GPL(hid_disconnect);
1249
1250 /* a list of devices for which there is a specialized driver on HID bus */
1251 static const struct hid_device_id hid_blacklist[] = {
1252         { HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M1968) },
1253         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1254         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1255         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) },
1256         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1257         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1258         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1259         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1260         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1261         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1262         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1263         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1264         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1265         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1266         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1267         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1268         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1269         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1270         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1271         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1272         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1273         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1274         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1275         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1276         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1277         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1278         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1279         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1280         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1281         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1282         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1283         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1284         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1285         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1286         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1287         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1288         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1289         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1290         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1291         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1292         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1293         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1294         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1295         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1296         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1297         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1298         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1299         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1300         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1301         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1302         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
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_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1311         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1312         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1313         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1314         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1315         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1316         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1317         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1318         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1319         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1320         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1321         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1322         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1323         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1324         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1325         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1326         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1327         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1328         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1329         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1330         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1331         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1332         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1333         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1334         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1335         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1336         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1337         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1338         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1339         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1340         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1341         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1342         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1343         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1344         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1345         { HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1346         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1347         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1348         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1349         { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, USB_DEVICE_ID_MTP) },
1350         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1351         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1352         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1353         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1354         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1355         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1356         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1357         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1358         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1359         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1360         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1361         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1362         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1363
1364         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1365         { }
1366 };
1367
1368 struct hid_dynid {
1369         struct list_head list;
1370         struct hid_device_id id;
1371 };
1372
1373 /**
1374  * store_new_id - add a new HID device ID to this driver and re-probe devices
1375  * @driver: target device driver
1376  * @buf: buffer for scanning device ID data
1377  * @count: input size
1378  *
1379  * Adds a new dynamic hid device ID to this driver,
1380  * and causes the driver to probe for all devices again.
1381  */
1382 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1383                 size_t count)
1384 {
1385         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1386         struct hid_dynid *dynid;
1387         __u32 bus, vendor, product;
1388         unsigned long driver_data = 0;
1389         int ret;
1390
1391         ret = sscanf(buf, "%x %x %x %lx",
1392                         &bus, &vendor, &product, &driver_data);
1393         if (ret < 3)
1394                 return -EINVAL;
1395
1396         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1397         if (!dynid)
1398                 return -ENOMEM;
1399
1400         dynid->id.bus = bus;
1401         dynid->id.vendor = vendor;
1402         dynid->id.product = product;
1403         dynid->id.driver_data = driver_data;
1404
1405         spin_lock(&hdrv->dyn_lock);
1406         list_add_tail(&dynid->list, &hdrv->dyn_list);
1407         spin_unlock(&hdrv->dyn_lock);
1408
1409         ret = 0;
1410         if (get_driver(&hdrv->driver)) {
1411                 ret = driver_attach(&hdrv->driver);
1412                 put_driver(&hdrv->driver);
1413         }
1414
1415         return ret ? : count;
1416 }
1417 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1418
1419 static void hid_free_dynids(struct hid_driver *hdrv)
1420 {
1421         struct hid_dynid *dynid, *n;
1422
1423         spin_lock(&hdrv->dyn_lock);
1424         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1425                 list_del(&dynid->list);
1426                 kfree(dynid);
1427         }
1428         spin_unlock(&hdrv->dyn_lock);
1429 }
1430
1431 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1432                 struct hid_driver *hdrv)
1433 {
1434         struct hid_dynid *dynid;
1435
1436         spin_lock(&hdrv->dyn_lock);
1437         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1438                 if (hid_match_one_id(hdev, &dynid->id)) {
1439                         spin_unlock(&hdrv->dyn_lock);
1440                         return &dynid->id;
1441                 }
1442         }
1443         spin_unlock(&hdrv->dyn_lock);
1444
1445         return hid_match_id(hdev, hdrv->id_table);
1446 }
1447
1448 static int hid_bus_match(struct device *dev, struct device_driver *drv)
1449 {
1450         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1451         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1452
1453         if (!hid_match_device(hdev, hdrv))
1454                 return 0;
1455
1456         /* generic wants all non-blacklisted */
1457         if (!strncmp(hdrv->name, "generic-", 8))
1458                 return !hid_match_id(hdev, hid_blacklist);
1459
1460         return 1;
1461 }
1462
1463 static int hid_device_probe(struct device *dev)
1464 {
1465         struct hid_driver *hdrv = container_of(dev->driver,
1466                         struct hid_driver, driver);
1467         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1468         const struct hid_device_id *id;
1469         int ret = 0;
1470
1471         if (!hdev->driver) {
1472                 id = hid_match_device(hdev, hdrv);
1473                 if (id == NULL)
1474                         return -ENODEV;
1475
1476                 hdev->driver = hdrv;
1477                 if (hdrv->probe) {
1478                         ret = hdrv->probe(hdev, id);
1479                 } else { /* default probe */
1480                         ret = hid_parse(hdev);
1481                         if (!ret)
1482                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1483                 }
1484                 if (ret)
1485                         hdev->driver = NULL;
1486         }
1487         return ret;
1488 }
1489
1490 static int hid_device_remove(struct device *dev)
1491 {
1492         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1493         struct hid_driver *hdrv = hdev->driver;
1494
1495         if (hdrv) {
1496                 if (hdrv->remove)
1497                         hdrv->remove(hdev);
1498                 else /* default remove */
1499                         hid_hw_stop(hdev);
1500                 hdev->driver = NULL;
1501         }
1502
1503         return 0;
1504 }
1505
1506 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1507 {
1508         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1509
1510         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
1511                         hdev->bus, hdev->vendor, hdev->product))
1512                 return -ENOMEM;
1513
1514         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
1515                 return -ENOMEM;
1516
1517         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
1518                 return -ENOMEM;
1519
1520         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
1521                 return -ENOMEM;
1522
1523         if (add_uevent_var(env, "MODALIAS=hid:b%04Xv%08Xp%08X",
1524                         hdev->bus, hdev->vendor, hdev->product))
1525                 return -ENOMEM;
1526
1527         return 0;
1528 }
1529
1530 static struct bus_type hid_bus_type = {
1531         .name           = "hid",
1532         .match          = hid_bus_match,
1533         .probe          = hid_device_probe,
1534         .remove         = hid_device_remove,
1535         .uevent         = hid_uevent,
1536 };
1537
1538 /* a list of devices that shouldn't be handled by HID core at all */
1539 static const struct hid_device_id hid_ignore_list[] = {
1540         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
1541         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
1542         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
1543         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
1544         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
1545         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
1546         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
1547         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
1548         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
1549         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
1550         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
1551         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
1552         { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM)},
1553         { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM2)},
1554         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
1555         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
1556         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
1557         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
1558         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
1559         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
1560         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
1561         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
1562         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
1563         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
1564         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
1565         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
1566         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
1567         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
1568         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0003) },
1569         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
1570         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
1571         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
1572         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
1573         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
1574         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
1575         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
1576         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
1577         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
1578         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
1579         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
1580         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
1581         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
1582         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
1583         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
1584         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
1585         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
1586         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
1587         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
1588         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
1589         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
1590         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
1591         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
1592         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
1593         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
1594         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
1595         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
1596         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
1597         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
1598         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
1599         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
1600         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
1601         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
1602         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
1603         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
1604         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
1605         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
1606         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
1607         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
1608         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
1609         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
1610         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
1611         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
1612         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
1613         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
1614         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
1615         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
1616         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
1617         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
1618         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
1619         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
1620         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
1621         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
1622         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
1623         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
1624         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
1625         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
1626         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
1627         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
1628         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
1629         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
1630         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
1631         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
1632         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
1633         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
1634         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
1635         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
1636         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
1637         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
1638         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
1639         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
1640         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
1641         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY1) },
1642         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
1643         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
1644         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
1645         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
1646         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
1647         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
1648         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
1649         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
1650         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
1651         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
1652         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
1653         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
1654         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
1655         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
1656         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
1657         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
1658         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
1659         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
1660         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
1661         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
1662         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
1663         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
1664         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
1665         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
1666         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
1667         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
1668         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
1669         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
1670         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
1671         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
1672         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
1673         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
1674         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
1675         { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
1676         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
1677         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
1678         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
1679         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
1680         { }
1681 };
1682
1683 /**
1684  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
1685  *
1686  * There are composite devices for which we want to ignore only a certain
1687  * interface. This is a list of devices for which only the mouse interface will
1688  * be ignored. This allows a dedicated driver to take care of the interface.
1689  */
1690 static const struct hid_device_id hid_mouse_ignore_list[] = {
1691         /* appletouch driver */
1692         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1693         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1694         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1695         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1696         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1697         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1698         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1699         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1700         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1701         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1702         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1703         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1704         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1705         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1706         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1707         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1708         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1709         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1710         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1711         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1712         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1713         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1714         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1715         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1716         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1717         { }
1718 };
1719
1720 static bool hid_ignore(struct hid_device *hdev)
1721 {
1722         switch (hdev->vendor) {
1723         case USB_VENDOR_ID_CODEMERCS:
1724                 /* ignore all Code Mercenaries IOWarrior devices */
1725                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
1726                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
1727                         return true;
1728                 break;
1729         case USB_VENDOR_ID_LOGITECH:
1730                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
1731                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
1732                         return true;
1733                 break;
1734         case USB_VENDOR_ID_SOUNDGRAPH:
1735                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
1736                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
1737                         return true;
1738                 break;
1739         }
1740
1741         if (hdev->type == HID_TYPE_USBMOUSE &&
1742                         hid_match_id(hdev, hid_mouse_ignore_list))
1743                 return true;
1744
1745         return !!hid_match_id(hdev, hid_ignore_list);
1746 }
1747
1748 int hid_add_device(struct hid_device *hdev)
1749 {
1750         static atomic_t id = ATOMIC_INIT(0);
1751         int ret;
1752
1753         if (WARN_ON(hdev->status & HID_STAT_ADDED))
1754                 return -EBUSY;
1755
1756         /* we need to kill them here, otherwise they will stay allocated to
1757          * wait for coming driver */
1758         if (hid_ignore(hdev))
1759                 return -ENODEV;
1760
1761         /* XXX hack, any other cleaner solution after the driver core
1762          * is converted to allow more than 20 bytes as the device name? */
1763         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
1764                      hdev->vendor, hdev->product, atomic_inc_return(&id));
1765
1766         ret = device_add(&hdev->dev);
1767         if (!ret)
1768                 hdev->status |= HID_STAT_ADDED;
1769
1770         hid_debug_register(hdev, dev_name(&hdev->dev));
1771
1772         return ret;
1773 }
1774 EXPORT_SYMBOL_GPL(hid_add_device);
1775
1776 /**
1777  * hid_allocate_device - allocate new hid device descriptor
1778  *
1779  * Allocate and initialize hid device, so that hid_destroy_device might be
1780  * used to free it.
1781  *
1782  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
1783  * error value.
1784  */
1785 struct hid_device *hid_allocate_device(void)
1786 {
1787         struct hid_device *hdev;
1788         unsigned int i;
1789         int ret = -ENOMEM;
1790
1791         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
1792         if (hdev == NULL)
1793                 return ERR_PTR(ret);
1794
1795         device_initialize(&hdev->dev);
1796         hdev->dev.release = hid_device_release;
1797         hdev->dev.bus = &hid_bus_type;
1798
1799         hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
1800                         sizeof(struct hid_collection), GFP_KERNEL);
1801         if (hdev->collection == NULL)
1802                 goto err;
1803         hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
1804
1805         for (i = 0; i < HID_REPORT_TYPES; i++)
1806                 INIT_LIST_HEAD(&hdev->report_enum[i].report_list);
1807
1808         init_waitqueue_head(&hdev->debug_wait);
1809         INIT_LIST_HEAD(&hdev->debug_list);
1810
1811         return hdev;
1812 err:
1813         put_device(&hdev->dev);
1814         return ERR_PTR(ret);
1815 }
1816 EXPORT_SYMBOL_GPL(hid_allocate_device);
1817
1818 static void hid_remove_device(struct hid_device *hdev)
1819 {
1820         if (hdev->status & HID_STAT_ADDED) {
1821                 device_del(&hdev->dev);
1822                 hid_debug_unregister(hdev);
1823                 hdev->status &= ~HID_STAT_ADDED;
1824         }
1825 }
1826
1827 /**
1828  * hid_destroy_device - free previously allocated device
1829  *
1830  * @hdev: hid device
1831  *
1832  * If you allocate hid_device through hid_allocate_device, you should ever
1833  * free by this function.
1834  */
1835 void hid_destroy_device(struct hid_device *hdev)
1836 {
1837         hid_remove_device(hdev);
1838         put_device(&hdev->dev);
1839 }
1840 EXPORT_SYMBOL_GPL(hid_destroy_device);
1841
1842 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
1843                 const char *mod_name)
1844 {
1845         int ret;
1846
1847         hdrv->driver.name = hdrv->name;
1848         hdrv->driver.bus = &hid_bus_type;
1849         hdrv->driver.owner = owner;
1850         hdrv->driver.mod_name = mod_name;
1851
1852         INIT_LIST_HEAD(&hdrv->dyn_list);
1853         spin_lock_init(&hdrv->dyn_lock);
1854
1855         ret = driver_register(&hdrv->driver);
1856         if (ret)
1857                 return ret;
1858
1859         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
1860         if (ret)
1861                 driver_unregister(&hdrv->driver);
1862
1863         return ret;
1864 }
1865 EXPORT_SYMBOL_GPL(__hid_register_driver);
1866
1867 void hid_unregister_driver(struct hid_driver *hdrv)
1868 {
1869         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
1870         driver_unregister(&hdrv->driver);
1871         hid_free_dynids(hdrv);
1872 }
1873 EXPORT_SYMBOL_GPL(hid_unregister_driver);
1874
1875 int hid_check_keys_pressed(struct hid_device *hid)
1876 {
1877         struct hid_input *hidinput;
1878         int i;
1879
1880         if (!(hid->claimed & HID_CLAIMED_INPUT))
1881                 return 0;
1882
1883         list_for_each_entry(hidinput, &hid->inputs, list) {
1884                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
1885                         if (hidinput->input->key[i])
1886                                 return 1;
1887         }
1888
1889         return 0;
1890 }
1891
1892 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
1893
1894 static int __init hid_init(void)
1895 {
1896         int ret;
1897
1898         if (hid_debug)
1899                 printk(KERN_WARNING "HID: hid_debug is now used solely for parser and driver debugging.\n"
1900                                 "HID: debugfs is now used for inspecting the device (report descriptor, reports)\n");
1901
1902         ret = bus_register(&hid_bus_type);
1903         if (ret) {
1904                 printk(KERN_ERR "HID: can't register hid bus\n");
1905                 goto err;
1906         }
1907
1908         ret = hidraw_init();
1909         if (ret)
1910                 goto err_bus;
1911
1912         hid_debug_init();
1913
1914         return 0;
1915 err_bus:
1916         bus_unregister(&hid_bus_type);
1917 err:
1918         return ret;
1919 }
1920
1921 static void __exit hid_exit(void)
1922 {
1923         hid_debug_exit();
1924         hidraw_exit();
1925         bus_unregister(&hid_bus_type);
1926 }
1927
1928 module_init(hid_init);
1929 module_exit(hid_exit);
1930
1931 MODULE_AUTHOR("Andreas Gal");
1932 MODULE_AUTHOR("Vojtech Pavlik");
1933 MODULE_AUTHOR("Jiri Kosina");
1934 MODULE_LICENSE(DRIVER_LICENSE);
1935