Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

Linux/drivers/hid/hid-core.c

  1 /*
  2  *  HID support for Linux
  3  *
  4  *  Copyright (c) 1999 Andreas Gal
  5  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
  6  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
  7  *  Copyright (c) 2006-2012 Jiri Kosina
  8  */
  9 
 10 /*
 11  * This program is free software; you can redistribute it and/or modify it
 12  * under the terms of the GNU General Public License as published by the Free
 13  * Software Foundation; either version 2 of the License, or (at your option)
 14  * any later version.
 15  */
 16 
 17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 18 
 19 #include <linux/module.h>
 20 #include <linux/slab.h>
 21 #include <linux/init.h>
 22 #include <linux/kernel.h>
 23 #include <linux/list.h>
 24 #include <linux/mm.h>
 25 #include <linux/spinlock.h>
 26 #include <asm/unaligned.h>
 27 #include <asm/byteorder.h>
 28 #include <linux/input.h>
 29 #include <linux/wait.h>
 30 #include <linux/vmalloc.h>
 31 #include <linux/sched.h>
 32 #include <linux/semaphore.h>
 33 
 34 #include <linux/hid.h>
 35 #include <linux/hiddev.h>
 36 #include <linux/hid-debug.h>
 37 #include <linux/hidraw.h>
 38 
 39 #include "hid-ids.h"
 40 
 41 /*
 42  * Version Information
 43  */
 44 
 45 #define DRIVER_DESC "HID core driver"
 46 #define DRIVER_LICENSE "GPL"
 47 
 48 int hid_debug = 0;
 49 module_param_named(debug, hid_debug, int, 0600);
 50 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
 51 EXPORT_SYMBOL_GPL(hid_debug);
 52 
 53 static int hid_ignore_special_drivers = 0;
 54 module_param_named(ignore_special_drivers, hid_ignore_special_drivers, int, 0600);
 55 MODULE_PARM_DESC(debug, "Ignore any special drivers and handle all devices by generic driver");
 56 
 57 /*
 58  * Register a new report for a device.
 59  */
 60 
 61 struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
 62 {
 63         struct hid_report_enum *report_enum = device->report_enum + type;
 64         struct hid_report *report;
 65 
 66         if (id >= HID_MAX_IDS)
 67                 return NULL;
 68         if (report_enum->report_id_hash[id])
 69                 return report_enum->report_id_hash[id];
 70 
 71         report = kzalloc(sizeof(struct hid_report), GFP_KERNEL);
 72         if (!report)
 73                 return NULL;
 74 
 75         if (id != 0)
 76                 report_enum->numbered = 1;
 77 
 78         report->id = id;
 79         report->type = type;
 80         report->size = 0;
 81         report->device = device;
 82         report_enum->report_id_hash[id] = report;
 83 
 84         list_add_tail(&report->list, &report_enum->report_list);
 85 
 86         return report;
 87 }
 88 EXPORT_SYMBOL_GPL(hid_register_report);
 89 
 90 /*
 91  * Register a new field for this report.
 92  */
 93 
 94 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
 95 {
 96         struct hid_field *field;
 97 
 98         if (report->maxfield == HID_MAX_FIELDS) {
 99                 hid_err(report->device, "too many fields in report\n");
100                 return NULL;
101         }
102 
103         field = kzalloc((sizeof(struct hid_field) +
104                          usages * sizeof(struct hid_usage) +
105                          values * sizeof(unsigned)), GFP_KERNEL);
106         if (!field)
107                 return NULL;
108 
109         field->index = report->maxfield++;
110         report->field[field->index] = field;
111         field->usage = (struct hid_usage *)(field + 1);
112         field->value = (s32 *)(field->usage + usages);
113         field->report = report;
114 
115         return field;
116 }
117 
118 /*
119  * Open a collection. The type/usage is pushed on the stack.
120  */
121 
122 static int open_collection(struct hid_parser *parser, unsigned type)
123 {
124         struct hid_collection *collection;
125         unsigned usage;
126 
127         usage = parser->local.usage[0];
128 
129         if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
130                 hid_err(parser->device, "collection stack overflow\n");
131                 return -EINVAL;
132         }
133 
134         if (parser->device->maxcollection == parser->device->collection_size) {
135                 collection = kmalloc(sizeof(struct hid_collection) *
136                                 parser->device->collection_size * 2, GFP_KERNEL);
137                 if (collection == NULL) {
138                         hid_err(parser->device, "failed to reallocate collection array\n");
139                         return -ENOMEM;
140                 }
141                 memcpy(collection, parser->device->collection,
142                         sizeof(struct hid_collection) *
143                         parser->device->collection_size);
144                 memset(collection + parser->device->collection_size, 0,
145                         sizeof(struct hid_collection) *
146                         parser->device->collection_size);
147                 kfree(parser->device->collection);
148                 parser->device->collection = collection;
149                 parser->device->collection_size *= 2;
150         }
151 
152         parser->collection_stack[parser->collection_stack_ptr++] =
153                 parser->device->maxcollection;
154 
155         collection = parser->device->collection +
156                 parser->device->maxcollection++;
157         collection->type = type;
158         collection->usage = usage;
159         collection->level = parser->collection_stack_ptr - 1;
160 
161         if (type == HID_COLLECTION_APPLICATION)
162                 parser->device->maxapplication++;
163 
164         return 0;
165 }
166 
167 /*
168  * Close a collection.
169  */
170 
171 static int close_collection(struct hid_parser *parser)
172 {
173         if (!parser->collection_stack_ptr) {
174                 hid_err(parser->device, "collection stack underflow\n");
175                 return -EINVAL;
176         }
177         parser->collection_stack_ptr--;
178         return 0;
179 }
180 
181 /*
182  * Climb up the stack, search for the specified collection type
183  * and return the usage.
184  */
185 
186 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
187 {
188         struct hid_collection *collection = parser->device->collection;
189         int n;
190 
191         for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
192                 unsigned index = parser->collection_stack[n];
193                 if (collection[index].type == type)
194                         return collection[index].usage;
195         }
196         return 0; /* we know nothing about this usage type */
197 }
198 
199 /*
200  * Add a usage to the temporary parser table.
201  */
202 
203 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
204 {
205         if (parser->local.usage_index >= HID_MAX_USAGES) {
206                 hid_err(parser->device, "usage index exceeded\n");
207                 return -1;
208         }
209         parser->local.usage[parser->local.usage_index] = usage;
210         parser->local.collection_index[parser->local.usage_index] =
211                 parser->collection_stack_ptr ?
212                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
213         parser->local.usage_index++;
214         return 0;
215 }
216 
217 /*
218  * Register a new field for this report.
219  */
220 
221 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
222 {
223         struct hid_report *report;
224         struct hid_field *field;
225         unsigned usages;
226         unsigned offset;
227         unsigned i;
228 
229         report = hid_register_report(parser->device, report_type, parser->global.report_id);
230         if (!report) {
231                 hid_err(parser->device, "hid_register_report failed\n");
232                 return -1;
233         }
234 
235         /* Handle both signed and unsigned cases properly */
236         if ((parser->global.logical_minimum < 0 &&
237                 parser->global.logical_maximum <
238                 parser->global.logical_minimum) ||
239                 (parser->global.logical_minimum >= 0 &&
240                 (__u32)parser->global.logical_maximum <
241                 (__u32)parser->global.logical_minimum)) {
242                 dbg_hid("logical range invalid 0x%x 0x%x\n",
243                         parser->global.logical_minimum,
244                         parser->global.logical_maximum);
245                 return -1;
246         }
247 
248         offset = report->size;
249         report->size += parser->global.report_size * parser->global.report_count;
250 
251         if (!parser->local.usage_index) /* Ignore padding fields */
252                 return 0;
253 
254         usages = max_t(unsigned, parser->local.usage_index,
255                                  parser->global.report_count);
256 
257         field = hid_register_field(report, usages, parser->global.report_count);
258         if (!field)
259                 return 0;
260 
261         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
262         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
263         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
264 
265         for (i = 0; i < usages; i++) {
266                 unsigned j = i;
267                 /* Duplicate the last usage we parsed if we have excess values */
268                 if (i >= parser->local.usage_index)
269                         j = parser->local.usage_index - 1;
270                 field->usage[i].hid = parser->local.usage[j];
271                 field->usage[i].collection_index =
272                         parser->local.collection_index[j];
273                 field->usage[i].usage_index = i;
274         }
275 
276         field->maxusage = usages;
277         field->flags = flags;
278         field->report_offset = offset;
279         field->report_type = report_type;
280         field->report_size = parser->global.report_size;
281         field->report_count = parser->global.report_count;
282         field->logical_minimum = parser->global.logical_minimum;
283         field->logical_maximum = parser->global.logical_maximum;
284         field->physical_minimum = parser->global.physical_minimum;
285         field->physical_maximum = parser->global.physical_maximum;
286         field->unit_exponent = parser->global.unit_exponent;
287         field->unit = parser->global.unit;
288 
289         return 0;
290 }
291 
292 /*
293  * Read data value from item.
294  */
295 
296 static u32 item_udata(struct hid_item *item)
297 {
298         switch (item->size) {
299         case 1: return item->data.u8;
300         case 2: return item->data.u16;
301         case 4: return item->data.u32;
302         }
303         return 0;
304 }
305 
306 static s32 item_sdata(struct hid_item *item)
307 {
308         switch (item->size) {
309         case 1: return item->data.s8;
310         case 2: return item->data.s16;
311         case 4: return item->data.s32;
312         }
313         return 0;
314 }
315 
316 /*
317  * Process a global item.
318  */
319 
320 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
321 {
322         __s32 raw_value;
323         switch (item->tag) {
324         case HID_GLOBAL_ITEM_TAG_PUSH:
325 
326                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
327                         hid_err(parser->device, "global environment stack overflow\n");
328                         return -1;
329                 }
330 
331                 memcpy(parser->global_stack + parser->global_stack_ptr++,
332                         &parser->global, sizeof(struct hid_global));
333                 return 0;
334 
335         case HID_GLOBAL_ITEM_TAG_POP:
336 
337                 if (!parser->global_stack_ptr) {
338                         hid_err(parser->device, "global environment stack underflow\n");
339                         return -1;
340                 }
341 
342                 memcpy(&parser->global, parser->global_stack +
343                         --parser->global_stack_ptr, sizeof(struct hid_global));
344                 return 0;
345 
346         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
347                 parser->global.usage_page = item_udata(item);
348                 return 0;
349 
350         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
351                 parser->global.logical_minimum = item_sdata(item);
352                 return 0;
353 
354         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
355                 if (parser->global.logical_minimum < 0)
356                         parser->global.logical_maximum = item_sdata(item);
357                 else
358                         parser->global.logical_maximum = item_udata(item);
359                 return 0;
360 
361         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
362                 parser->global.physical_minimum = item_sdata(item);
363                 return 0;
364 
365         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
366                 if (parser->global.physical_minimum < 0)
367                         parser->global.physical_maximum = item_sdata(item);
368                 else
369                         parser->global.physical_maximum = item_udata(item);
370                 return 0;
371 
372         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
373                 /* Many devices provide unit exponent as a two's complement
374                  * nibble due to the common misunderstanding of HID
375                  * specification 1.11, 6.2.2.7 Global Items. Attempt to handle
376                  * both this and the standard encoding. */
377                 raw_value = item_sdata(item);
378                 if (!(raw_value & 0xfffffff0))
379                         parser->global.unit_exponent = hid_snto32(raw_value, 4);
380                 else
381                         parser->global.unit_exponent = raw_value;
382                 return 0;
383 
384         case HID_GLOBAL_ITEM_TAG_UNIT:
385                 parser->global.unit = item_udata(item);
386                 return 0;
387 
388         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
389                 parser->global.report_size = item_udata(item);
390                 if (parser->global.report_size > 128) {
391                         hid_err(parser->device, "invalid report_size %d\n",
392                                         parser->global.report_size);
393                         return -1;
394                 }
395                 return 0;
396 
397         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
398                 parser->global.report_count = item_udata(item);
399                 if (parser->global.report_count > HID_MAX_USAGES) {
400                         hid_err(parser->device, "invalid report_count %d\n",
401                                         parser->global.report_count);
402                         return -1;
403                 }
404                 return 0;
405 
406         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
407                 parser->global.report_id = item_udata(item);
408                 if (parser->global.report_id == 0 ||
409                     parser->global.report_id >= HID_MAX_IDS) {
410                         hid_err(parser->device, "report_id %u is invalid\n",
411                                 parser->global.report_id);
412                         return -1;
413                 }
414                 return 0;
415 
416         default:
417                 hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
418                 return -1;
419         }
420 }
421 
422 /*
423  * Process a local item.
424  */
425 
426 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
427 {
428         __u32 data;
429         unsigned n;
430 
431         data = item_udata(item);
432 
433         switch (item->tag) {
434         case HID_LOCAL_ITEM_TAG_DELIMITER:
435 
436                 if (data) {
437                         /*
438                          * We treat items before the first delimiter
439                          * as global to all usage sets (branch 0).
440                          * In the moment we process only these global
441                          * items and the first delimiter set.
442                          */
443                         if (parser->local.delimiter_depth != 0) {
444                                 hid_err(parser->device, "nested delimiters\n");
445                                 return -1;
446                         }
447                         parser->local.delimiter_depth++;
448                         parser->local.delimiter_branch++;
449                 } else {
450                         if (parser->local.delimiter_depth < 1) {
451                                 hid_err(parser->device, "bogus close delimiter\n");
452                                 return -1;
453                         }
454                         parser->local.delimiter_depth--;
455                 }
456                 return 0;
457 
458         case HID_LOCAL_ITEM_TAG_USAGE:
459 
460                 if (parser->local.delimiter_branch > 1) {
461                         dbg_hid("alternative usage ignored\n");
462                         return 0;
463                 }
464 
465                 if (item->size <= 2)
466                         data = (parser->global.usage_page << 16) + data;
467 
468                 return hid_add_usage(parser, data);
469 
470         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
471 
472                 if (parser->local.delimiter_branch > 1) {
473                         dbg_hid("alternative usage ignored\n");
474                         return 0;
475                 }
476 
477                 if (item->size <= 2)
478                         data = (parser->global.usage_page << 16) + data;
479 
480                 parser->local.usage_minimum = data;
481                 return 0;
482 
483         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
484 
485                 if (parser->local.delimiter_branch > 1) {
486                         dbg_hid("alternative usage ignored\n");
487                         return 0;
488                 }
489 
490                 if (item->size <= 2)
491                         data = (parser->global.usage_page << 16) + data;
492 
493                 for (n = parser->local.usage_minimum; n <= data; n++)
494                         if (hid_add_usage(parser, n)) {
495                                 dbg_hid("hid_add_usage failed\n");
496                                 return -1;
497                         }
498                 return 0;
499 
500         default:
501 
502                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
503                 return 0;
504         }
505         return 0;
506 }
507 
508 /*
509  * Process a main item.
510  */
511 
512 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
513 {
514         __u32 data;
515         int ret;
516 
517         data = item_udata(item);
518 
519         switch (item->tag) {
520         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
521                 ret = open_collection(parser, data & 0xff);
522                 break;
523         case HID_MAIN_ITEM_TAG_END_COLLECTION:
524                 ret = close_collection(parser);
525                 break;
526         case HID_MAIN_ITEM_TAG_INPUT:
527                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
528                 break;
529         case HID_MAIN_ITEM_TAG_OUTPUT:
530                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
531                 break;
532         case HID_MAIN_ITEM_TAG_FEATURE:
533                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
534                 break;
535         default:
536                 hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
537                 ret = 0;
538         }
539 
540         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
541 
542         return ret;
543 }
544 
545 /*
546  * Process a reserved item.
547  */
548 
549 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
550 {
551         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
552         return 0;
553 }
554 
555 /*
556  * Free a report and all registered fields. The field->usage and
557  * field->value table's are allocated behind the field, so we need
558  * only to free(field) itself.
559  */
560 
561 static void hid_free_report(struct hid_report *report)
562 {
563         unsigned n;
564 
565         for (n = 0; n < report->maxfield; n++)
566                 kfree(report->field[n]);
567         kfree(report);
568 }
569 
570 /*
571  * Close report. This function returns the device
572  * state to the point prior to hid_open_report().
573  */
574 static void hid_close_report(struct hid_device *device)
575 {
576         unsigned i, j;
577 
578         for (i = 0; i < HID_REPORT_TYPES; i++) {
579                 struct hid_report_enum *report_enum = device->report_enum + i;
580 
581                 for (j = 0; j < HID_MAX_IDS; j++) {
582                         struct hid_report *report = report_enum->report_id_hash[j];
583                         if (report)
584                                 hid_free_report(report);
585                 }
586                 memset(report_enum, 0, sizeof(*report_enum));
587                 INIT_LIST_HEAD(&report_enum->report_list);
588         }
589 
590         kfree(device->rdesc);
591         device->rdesc = NULL;
592         device->rsize = 0;
593 
594         kfree(device->collection);
595         device->collection = NULL;
596         device->collection_size = 0;
597         device->maxcollection = 0;
598         device->maxapplication = 0;
599 
600         device->status &= ~HID_STAT_PARSED;
601 }
602 
603 /*
604  * Free a device structure, all reports, and all fields.
605  */
606 
607 static void hid_device_release(struct device *dev)
608 {
609         struct hid_device *hid = container_of(dev, struct hid_device, dev);
610 
611         hid_close_report(hid);
612         kfree(hid->dev_rdesc);
613         kfree(hid);
614 }
615 
616 /*
617  * Fetch a report description item from the data stream. We support long
618  * items, though they are not used yet.
619  */
620 
621 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
622 {
623         u8 b;
624 
625         if ((end - start) <= 0)
626                 return NULL;
627 
628         b = *start++;
629 
630         item->type = (b >> 2) & 3;
631         item->tag  = (b >> 4) & 15;
632 
633         if (item->tag == HID_ITEM_TAG_LONG) {
634 
635                 item->format = HID_ITEM_FORMAT_LONG;
636 
637                 if ((end - start) < 2)
638                         return NULL;
639 
640                 item->size = *start++;
641                 item->tag  = *start++;
642 
643                 if ((end - start) < item->size)
644                         return NULL;
645 
646                 item->data.longdata = start;
647                 start += item->size;
648                 return start;
649         }
650 
651         item->format = HID_ITEM_FORMAT_SHORT;
652         item->size = b & 3;
653 
654         switch (item->size) {
655         case 0:
656                 return start;
657 
658         case 1:
659                 if ((end - start) < 1)
660                         return NULL;
661                 item->data.u8 = *start++;
662                 return start;
663 
664         case 2:
665                 if ((end - start) < 2)
666                         return NULL;
667                 item->data.u16 = get_unaligned_le16(start);
668                 start = (__u8 *)((__le16 *)start + 1);
669                 return start;
670 
671         case 3:
672                 item->size++;
673                 if ((end - start) < 4)
674                         return NULL;
675                 item->data.u32 = get_unaligned_le32(start);
676                 start = (__u8 *)((__le32 *)start + 1);
677                 return start;
678         }
679 
680         return NULL;
681 }
682 
683 static void hid_scan_input_usage(struct hid_parser *parser, u32 usage)
684 {
685         struct hid_device *hid = parser->device;
686 
687         if (usage == HID_DG_CONTACTID)
688                 hid->group = HID_GROUP_MULTITOUCH;
689 }
690 
691 static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage)
692 {
693         if (usage == 0xff0000c5 && parser->global.report_count == 256 &&
694             parser->global.report_size == 8)
695                 parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;
696 }
697 
698 static void hid_scan_collection(struct hid_parser *parser, unsigned type)
699 {
700         struct hid_device *hid = parser->device;
701 
702         if (((parser->global.usage_page << 16) == HID_UP_SENSOR) &&
703             type == HID_COLLECTION_PHYSICAL)
704                 hid->group = HID_GROUP_SENSOR_HUB;
705 }
706 
707 static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)
708 {
709         __u32 data;
710         int i;
711 
712         data = item_udata(item);
713 
714         switch (item->tag) {
715         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
716                 hid_scan_collection(parser, data & 0xff);
717                 break;
718         case HID_MAIN_ITEM_TAG_END_COLLECTION:
719                 break;
720         case HID_MAIN_ITEM_TAG_INPUT:
721                 /* ignore constant inputs, they will be ignored by hid-input */
722                 if (data & HID_MAIN_ITEM_CONSTANT)
723                         break;
724                 for (i = 0; i < parser->local.usage_index; i++)
725                         hid_scan_input_usage(parser, parser->local.usage[i]);
726                 break;
727         case HID_MAIN_ITEM_TAG_OUTPUT:
728                 break;
729         case HID_MAIN_ITEM_TAG_FEATURE:
730                 for (i = 0; i < parser->local.usage_index; i++)
731                         hid_scan_feature_usage(parser, parser->local.usage[i]);
732                 break;
733         }
734 
735         /* Reset the local parser environment */
736         memset(&parser->local, 0, sizeof(parser->local));
737 
738         return 0;
739 }
740 
741 /*
742  * Scan a report descriptor before the device is added to the bus.
743  * Sets device groups and other properties that determine what driver
744  * to load.
745  */
746 static int hid_scan_report(struct hid_device *hid)
747 {
748         struct hid_parser *parser;
749         struct hid_item item;
750         __u8 *start = hid->dev_rdesc;
751         __u8 *end = start + hid->dev_rsize;
752         static int (*dispatch_type[])(struct hid_parser *parser,
753                                       struct hid_item *item) = {
754                 hid_scan_main,
755                 hid_parser_global,
756                 hid_parser_local,
757                 hid_parser_reserved
758         };
759 
760         parser = vzalloc(sizeof(struct hid_parser));
761         if (!parser)
762                 return -ENOMEM;
763 
764         parser->device = hid;
765         hid->group = HID_GROUP_GENERIC;
766 
767         /*
768          * The parsing is simpler than the one in hid_open_report() as we should
769          * be robust against hid errors. Those errors will be raised by
770          * hid_open_report() anyway.
771          */
772         while ((start = fetch_item(start, end, &item)) != NULL)
773                 dispatch_type[item.type](parser, &item);
774 
775         /*
776          * Handle special flags set during scanning.
777          */
778         if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) &&
779             (hid->group == HID_GROUP_MULTITOUCH))
780                 hid->group = HID_GROUP_MULTITOUCH_WIN_8;
781 
782         /*
783         * Vendor specific handlings
784         */
785         if ((hid->vendor == USB_VENDOR_ID_SYNAPTICS) &&
786             (hid->group == HID_GROUP_GENERIC))
787                 /* hid-rmi should take care of them, not hid-generic */
788                 hid->group = HID_GROUP_RMI;
789 
790         vfree(parser);
791         return 0;
792 }
793 
794 /**
795  * hid_parse_report - parse device report
796  *
797  * @device: hid device
798  * @start: report start
799  * @size: report size
800  *
801  * Allocate the device report as read by the bus driver. This function should
802  * only be called from parse() in ll drivers.
803  */
804 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
805 {
806         hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
807         if (!hid->dev_rdesc)
808                 return -ENOMEM;
809         hid->dev_rsize = size;
810         return 0;
811 }
812 EXPORT_SYMBOL_GPL(hid_parse_report);
813 
814 static const char * const hid_report_names[] = {
815         "HID_INPUT_REPORT",
816         "HID_OUTPUT_REPORT",
817         "HID_FEATURE_REPORT",
818 };
819 /**
820  * hid_validate_values - validate existing device report's value indexes
821  *
822  * @device: hid device
823  * @type: which report type to examine
824  * @id: which report ID to examine (0 for first)
825  * @field_index: which report field to examine
826  * @report_counts: expected number of values
827  *
828  * Validate the number of values in a given field of a given report, after
829  * parsing.
830  */
831 struct hid_report *hid_validate_values(struct hid_device *hid,
832                                        unsigned int type, unsigned int id,
833                                        unsigned int field_index,
834                                        unsigned int report_counts)
835 {
836         struct hid_report *report;
837 
838         if (type > HID_FEATURE_REPORT) {
839                 hid_err(hid, "invalid HID report type %u\n", type);
840                 return NULL;
841         }
842 
843         if (id >= HID_MAX_IDS) {
844                 hid_err(hid, "invalid HID report id %u\n", id);
845                 return NULL;
846         }
847 
848         /*
849          * Explicitly not using hid_get_report() here since it depends on
850          * ->numbered being checked, which may not always be the case when
851          * drivers go to access report values.
852          */
853         if (id == 0) {
854                 /*
855                  * Validating on id 0 means we should examine the first
856                  * report in the list.
857                  */
858                 report = list_entry(
859                                 hid->report_enum[type].report_list.next,
860                                 struct hid_report, list);
861         } else {
862                 report = hid->report_enum[type].report_id_hash[id];
863         }
864         if (!report) {
865                 hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
866                 return NULL;
867         }
868         if (report->maxfield <= field_index) {
869                 hid_err(hid, "not enough fields in %s %u\n",
870                         hid_report_names[type], id);
871                 return NULL;
872         }
873         if (report->field[field_index]->report_count < report_counts) {
874                 hid_err(hid, "not enough values in %s %u field %u\n",
875                         hid_report_names[type], id, field_index);
876                 return NULL;
877         }
878         return report;
879 }
880 EXPORT_SYMBOL_GPL(hid_validate_values);
881 
882 /**
883  * hid_open_report - open a driver-specific device report
884  *
885  * @device: hid device
886  *
887  * Parse a report description into a hid_device structure. Reports are
888  * enumerated, fields are attached to these reports.
889  * 0 returned on success, otherwise nonzero error value.
890  *
891  * This function (or the equivalent hid_parse() macro) should only be
892  * called from probe() in drivers, before starting the device.
893  */
894 int hid_open_report(struct hid_device *device)
895 {
896         struct hid_parser *parser;
897         struct hid_item item;
898         unsigned int size;
899         __u8 *start;
900         __u8 *buf;
901         __u8 *end;
902         int ret;
903         static int (*dispatch_type[])(struct hid_parser *parser,
904                                       struct hid_item *item) = {
905                 hid_parser_main,
906                 hid_parser_global,
907                 hid_parser_local,
908                 hid_parser_reserved
909         };
910 
911         if (WARN_ON(device->status & HID_STAT_PARSED))
912                 return -EBUSY;
913 
914         start = device->dev_rdesc;
915         if (WARN_ON(!start))
916                 return -ENODEV;
917         size = device->dev_rsize;
918 
919         buf = kmemdup(start, size, GFP_KERNEL);
920         if (buf == NULL)
921                 return -ENOMEM;
922 
923         if (device->driver->report_fixup)
924                 start = device->driver->report_fixup(device, buf, &size);
925         else
926                 start = buf;
927 
928         start = kmemdup(start, size, GFP_KERNEL);
929         kfree(buf);
930         if (start == NULL)
931                 return -ENOMEM;
932 
933         device->rdesc = start;
934         device->rsize = size;
935 
936         parser = vzalloc(sizeof(struct hid_parser));
937         if (!parser) {
938                 ret = -ENOMEM;
939                 goto err;
940         }
941 
942         parser->device = device;
943 
944         end = start + size;
945 
946         device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
947                                      sizeof(struct hid_collection), GFP_KERNEL);
948         if (!device->collection) {
949                 ret = -ENOMEM;
950                 goto err;
951         }
952         device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
953 
954         ret = -EINVAL;
955         while ((start = fetch_item(start, end, &item)) != NULL) {
956 
957                 if (item.format != HID_ITEM_FORMAT_SHORT) {
958                         hid_err(device, "unexpected long global item\n");
959                         goto err;
960                 }
961 
962                 if (dispatch_type[item.type](parser, &item)) {
963                         hid_err(device, "item %u %u %u %u parsing failed\n",
964                                 item.format, (unsigned)item.size,
965                                 (unsigned)item.type, (unsigned)item.tag);
966                         goto err;
967                 }
968 
969                 if (start == end) {
970                         if (parser->collection_stack_ptr) {
971                                 hid_err(device, "unbalanced collection at end of report description\n");
972                                 goto err;
973                         }
974                         if (parser->local.delimiter_depth) {
975                                 hid_err(device, "unbalanced delimiter at end of report description\n");
976                                 goto err;
977                         }
978                         vfree(parser);
979                         device->status |= HID_STAT_PARSED;
980                         return 0;
981                 }
982         }
983 
984         hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
985 err:
986         vfree(parser);
987         hid_close_report(device);
988         return ret;
989 }
990 EXPORT_SYMBOL_GPL(hid_open_report);
991 
992 /*
993  * Convert a signed n-bit integer to signed 32-bit integer. Common
994  * cases are done through the compiler, the screwed things has to be
995  * done by hand.
996  */
997 
998 static s32 snto32(__u32 value, unsigned n)
999 {
1000         switch (n) {
1001         case 8:  return ((__s8)value);
1002         case 16: return ((__s16)value);
1003         case 32: return ((__s32)value);
1004         }
1005         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
1006 }
1007 
1008 s32 hid_snto32(__u32 value, unsigned n)
1009 {
1010         return snto32(value, n);
1011 }
1012 EXPORT_SYMBOL_GPL(hid_snto32);
1013 
1014 /*
1015  * Convert a signed 32-bit integer to a signed n-bit integer.
1016  */
1017 
1018 static u32 s32ton(__s32 value, unsigned n)
1019 {
1020         s32 a = value >> (n - 1);
1021         if (a && a != -1)
1022                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
1023         return value & ((1 << n) - 1);
1024 }
1025 
1026 /*
1027  * Extract/implement a data field from/to a little endian report (bit array).
1028  *
1029  * Code sort-of follows HID spec:
1030  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
1031  *
1032  * While the USB HID spec allows unlimited length bit fields in "report
1033  * descriptors", most devices never use more than 16 bits.
1034  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
1035  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
1036  */
1037 
1038 static __u32 extract(const struct hid_device *hid, __u8 *report,
1039                      unsigned offset, unsigned n)
1040 {
1041         u64 x;
1042 
1043         if (n > 32)
1044                 hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
1045                          n, current->comm);
1046 
1047         report += offset >> 3;  /* adjust byte index */
1048         offset &= 7;            /* now only need bit offset into one byte */
1049         x = get_unaligned_le64(report);
1050         x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
1051         return (u32) x;
1052 }
1053 
1054 /*
1055  * "implement" : set bits in a little endian bit stream.
1056  * Same concepts as "extract" (see comments above).
1057  * The data mangled in the bit stream remains in little endian
1058  * order the whole time. It make more sense to talk about
1059  * endianness of register values by considering a register
1060  * a "cached" copy of the little endiad bit stream.
1061  */
1062 static void implement(const struct hid_device *hid, __u8 *report,
1063                       unsigned offset, unsigned n, __u32 value)
1064 {
1065         u64 x;
1066         u64 m = (1ULL << n) - 1;
1067 
1068         if (n > 32)
1069                 hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
1070                          __func__, n, current->comm);
1071 
1072         if (value > m)
1073                 hid_warn(hid, "%s() called with too large value %d! (%s)\n",
1074                          __func__, value, current->comm);
1075         WARN_ON(value > m);
1076         value &= m;
1077 
1078         report += offset >> 3;
1079         offset &= 7;
1080 
1081         x = get_unaligned_le64(report);
1082         x &= ~(m << offset);
1083         x |= ((u64)value) << offset;
1084         put_unaligned_le64(x, report);
1085 }
1086 
1087 /*
1088  * Search an array for a value.
1089  */
1090 
1091 static int search(__s32 *array, __s32 value, unsigned n)
1092 {
1093         while (n--) {
1094                 if (*array++ == value)
1095                         return 0;
1096         }
1097         return -1;
1098 }
1099 
1100 /**
1101  * hid_match_report - check if driver's raw_event should be called
1102  *
1103  * @hid: hid device
1104  * @report_type: type to match against
1105  *
1106  * compare hid->driver->report_table->report_type to report->type
1107  */
1108 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
1109 {
1110         const struct hid_report_id *id = hid->driver->report_table;
1111 
1112         if (!id) /* NULL means all */
1113                 return 1;
1114 
1115         for (; id->report_type != HID_TERMINATOR; id++)
1116                 if (id->report_type == HID_ANY_ID ||
1117                                 id->report_type == report->type)
1118                         return 1;
1119         return 0;
1120 }
1121 
1122 /**
1123  * hid_match_usage - check if driver's event should be called
1124  *
1125  * @hid: hid device
1126  * @usage: usage to match against
1127  *
1128  * compare hid->driver->usage_table->usage_{type,code} to
1129  * usage->usage_{type,code}
1130  */
1131 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1132 {
1133         const struct hid_usage_id *id = hid->driver->usage_table;
1134 
1135         if (!id) /* NULL means all */
1136                 return 1;
1137 
1138         for (; id->usage_type != HID_ANY_ID - 1; id++)
1139                 if ((id->usage_hid == HID_ANY_ID ||
1140                                 id->usage_hid == usage->hid) &&
1141                                 (id->usage_type == HID_ANY_ID ||
1142                                 id->usage_type == usage->type) &&
1143                                 (id->usage_code == HID_ANY_ID ||
1144                                  id->usage_code == usage->code))
1145                         return 1;
1146         return 0;
1147 }
1148 
1149 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1150                 struct hid_usage *usage, __s32 value, int interrupt)
1151 {
1152         struct hid_driver *hdrv = hid->driver;
1153         int ret;
1154 
1155         if (!list_empty(&hid->debug_list))
1156                 hid_dump_input(hid, usage, value);
1157 
1158         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1159                 ret = hdrv->event(hid, field, usage, value);
1160                 if (ret != 0) {
1161                         if (ret < 0)
1162                                 hid_err(hid, "%s's event failed with %d\n",
1163                                                 hdrv->name, ret);
1164                         return;
1165                 }
1166         }
1167 
1168         if (hid->claimed & HID_CLAIMED_INPUT)
1169                 hidinput_hid_event(hid, field, usage, value);
1170         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1171                 hid->hiddev_hid_event(hid, field, usage, value);
1172 }
1173 
1174 /*
1175  * Analyse a received field, and fetch the data from it. The field
1176  * content is stored for next report processing (we do differential
1177  * reporting to the layer).
1178  */
1179 
1180 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1181                             __u8 *data, int interrupt)
1182 {
1183         unsigned n;
1184         unsigned count = field->report_count;
1185         unsigned offset = field->report_offset;
1186         unsigned size = field->report_size;
1187         __s32 min = field->logical_minimum;
1188         __s32 max = field->logical_maximum;
1189         __s32 *value;
1190 
1191         value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1192         if (!value)
1193                 return;
1194 
1195         for (n = 0; n < count; n++) {
1196 
1197                 value[n] = min < 0 ?
1198                         snto32(extract(hid, data, offset + n * size, size),
1199                                size) :
1200                         extract(hid, data, offset + n * size, size);
1201 
1202                 /* Ignore report if ErrorRollOver */
1203                 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1204                     value[n] >= min && value[n] <= max &&
1205                     field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1206                         goto exit;
1207         }
1208 
1209         for (n = 0; n < count; n++) {
1210 
1211                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1212                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1213                         continue;
1214                 }
1215 
1216                 if (field->value[n] >= min && field->value[n] <= max
1217                         && field->usage[field->value[n] - min].hid
1218                         && search(value, field->value[n], count))
1219                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1220 
1221                 if (value[n] >= min && value[n] <= max
1222                         && field->usage[value[n] - min].hid
1223                         && search(field->value, value[n], count))
1224                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1225         }
1226 
1227         memcpy(field->value, value, count * sizeof(__s32));
1228 exit:
1229         kfree(value);
1230 }
1231 
1232 /*
1233  * Output the field into the report.
1234  */
1235 
1236 static void hid_output_field(const struct hid_device *hid,
1237                              struct hid_field *field, __u8 *data)
1238 {
1239         unsigned count = field->report_count;
1240         unsigned offset = field->report_offset;
1241         unsigned size = field->report_size;
1242         unsigned n;
1243 
1244         for (n = 0; n < count; n++) {
1245                 if (field->logical_minimum < 0) /* signed values */
1246                         implement(hid, data, offset + n * size, size,
1247                                   s32ton(field->value[n], size));
1248                 else                            /* unsigned values */
1249                         implement(hid, data, offset + n * size, size,
1250                                   field->value[n]);
1251         }
1252 }
1253 
1254 /*
1255  * Create a report. 'data' has to be allocated using
1256  * hid_alloc_report_buf() so that it has proper size.
1257  */
1258 
1259 void hid_output_report(struct hid_report *report, __u8 *data)
1260 {
1261         unsigned n;
1262 
1263         if (report->id > 0)
1264                 *data++ = report->id;
1265 
1266         memset(data, 0, ((report->size - 1) >> 3) + 1);
1267         for (n = 0; n < report->maxfield; n++)
1268                 hid_output_field(report->device, report->field[n], data);
1269 }
1270 EXPORT_SYMBOL_GPL(hid_output_report);
1271 
1272 static int hid_report_len(struct hid_report *report)
1273 {
1274         /* equivalent to DIV_ROUND_UP(report->size, 8) + !!(report->id > 0) */
1275         return ((report->size - 1) >> 3) + 1 + (report->id > 0);
1276 }
1277 
1278 /*
1279  * Allocator for buffer that is going to be passed to hid_output_report()
1280  */
1281 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
1282 {
1283         /*
1284          * 7 extra bytes are necessary to achieve proper functionality
1285          * of implement() working on 8 byte chunks
1286          */
1287 
1288         int len = hid_report_len(report) + 7;
1289 
1290         return kmalloc(len, flags);
1291 }
1292 EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
1293 
1294 /*
1295  * Set a field value. The report this field belongs to has to be
1296  * created and transferred to the device, to set this value in the
1297  * device.
1298  */
1299 
1300 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1301 {
1302         unsigned size;
1303 
1304         if (!field)
1305                 return -1;
1306 
1307         size = field->report_size;
1308 
1309         hid_dump_input(field->report->device, field->usage + offset, value);
1310 
1311         if (offset >= field->report_count) {
1312                 hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1313                                 offset, field->report_count);
1314                 return -1;
1315         }
1316         if (field->logical_minimum < 0) {
1317                 if (value != snto32(s32ton(value, size), size)) {
1318                         hid_err(field->report->device, "value %d is out of range\n", value);
1319                         return -1;
1320                 }
1321         }
1322         field->value[offset] = value;
1323         return 0;
1324 }
1325 EXPORT_SYMBOL_GPL(hid_set_field);
1326 
1327 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1328                 const u8 *data)
1329 {
1330         struct hid_report *report;
1331         unsigned int n = 0;     /* Normally report number is 0 */
1332 
1333         /* Device uses numbered reports, data[0] is report number */
1334         if (report_enum->numbered)
1335                 n = *data;
1336 
1337         report = report_enum->report_id_hash[n];
1338         if (report == NULL)
1339                 dbg_hid("undefined report_id %u received\n", n);
1340 
1341         return report;
1342 }
1343 
1344 /*
1345  * Implement a generic .request() callback, using .raw_request()
1346  * DO NOT USE in hid drivers directly, but through hid_hw_request instead.
1347  */
1348 void __hid_request(struct hid_device *hid, struct hid_report *report,
1349                 int reqtype)
1350 {
1351         char *buf;
1352         int ret;
1353         int len;
1354 
1355         buf = hid_alloc_report_buf(report, GFP_KERNEL);
1356         if (!buf)
1357                 return;
1358 
1359         len = hid_report_len(report);
1360 
1361         if (reqtype == HID_REQ_SET_REPORT)
1362                 hid_output_report(report, buf);
1363 
1364         ret = hid->ll_driver->raw_request(hid, report->id, buf, len,
1365                                           report->type, reqtype);
1366         if (ret < 0) {
1367                 dbg_hid("unable to complete request: %d\n", ret);
1368                 goto out;
1369         }
1370 
1371         if (reqtype == HID_REQ_GET_REPORT)
1372                 hid_input_report(hid, report->type, buf, ret, 0);
1373 
1374 out:
1375         kfree(buf);
1376 }
1377 EXPORT_SYMBOL_GPL(__hid_request);
1378 
1379 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1380                 int interrupt)
1381 {
1382         struct hid_report_enum *report_enum = hid->report_enum + type;
1383         struct hid_report *report;
1384         struct hid_driver *hdrv;
1385         unsigned int a;
1386         int rsize, csize = size;
1387         u8 *cdata = data;
1388         int ret = 0;
1389 
1390         report = hid_get_report(report_enum, data);
1391         if (!report)
1392                 goto out;
1393 
1394         if (report_enum->numbered) {
1395                 cdata++;
1396                 csize--;
1397         }
1398 
1399         rsize = ((report->size - 1) >> 3) + 1;
1400 
1401         if (rsize > HID_MAX_BUFFER_SIZE)
1402                 rsize = HID_MAX_BUFFER_SIZE;
1403 
1404         if (csize < rsize) {
1405                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1406                                 csize, rsize);
1407                 memset(cdata + csize, 0, rsize - csize);
1408         }
1409 
1410         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1411                 hid->hiddev_report_event(hid, report);
1412         if (hid->claimed & HID_CLAIMED_HIDRAW) {
1413                 ret = hidraw_report_event(hid, data, size);
1414                 if (ret)
1415                         goto out;
1416         }
1417 
1418         if (hid->claimed != HID_CLAIMED_HIDRAW && report->maxfield) {
1419                 for (a = 0; a < report->maxfield; a++)
1420                         hid_input_field(hid, report->field[a], cdata, interrupt);
1421                 hdrv = hid->driver;
1422                 if (hdrv && hdrv->report)
1423                         hdrv->report(hid, report);
1424         }
1425 
1426         if (hid->claimed & HID_CLAIMED_INPUT)
1427                 hidinput_report_event(hid, report);
1428 out:
1429         return ret;
1430 }
1431 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1432 
1433 /**
1434  * hid_input_report - report data from lower layer (usb, bt...)
1435  *
1436  * @hid: hid device
1437  * @type: HID report type (HID_*_REPORT)
1438  * @data: report contents
1439  * @size: size of data parameter
1440  * @interrupt: distinguish between interrupt and control transfers
1441  *
1442  * This is data entry for lower layers.
1443  */
1444 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1445 {
1446         struct hid_report_enum *report_enum;
1447         struct hid_driver *hdrv;
1448         struct hid_report *report;
1449         int ret = 0;
1450 
1451         if (!hid)
1452                 return -ENODEV;
1453 
1454         if (down_trylock(&hid->driver_input_lock))
1455                 return -EBUSY;
1456 
1457         if (!hid->driver) {
1458                 ret = -ENODEV;
1459                 goto unlock;
1460         }
1461         report_enum = hid->report_enum + type;
1462         hdrv = hid->driver;
1463 
1464         if (!size) {
1465                 dbg_hid("empty report\n");
1466                 ret = -1;
1467                 goto unlock;
1468         }
1469 
1470         /* Avoid unnecessary overhead if debugfs is disabled */
1471         if (!list_empty(&hid->debug_list))
1472                 hid_dump_report(hid, type, data, size);
1473 
1474         report = hid_get_report(report_enum, data);
1475 
1476         if (!report) {
1477                 ret = -1;
1478                 goto unlock;
1479         }
1480 
1481         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1482                 ret = hdrv->raw_event(hid, report, data, size);
1483                 if (ret < 0)
1484                         goto unlock;
1485         }
1486 
1487         ret = hid_report_raw_event(hid, type, data, size, interrupt);
1488 
1489 unlock:
1490         up(&hid->driver_input_lock);
1491         return ret;
1492 }
1493 EXPORT_SYMBOL_GPL(hid_input_report);
1494 
1495 static bool hid_match_one_id(struct hid_device *hdev,
1496                 const struct hid_device_id *id)
1497 {
1498         return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1499                 (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1500                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1501                 (id->product == HID_ANY_ID || id->product == hdev->product);
1502 }
1503 
1504 const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1505                 const struct hid_device_id *id)
1506 {
1507         for (; id->bus; id++)
1508                 if (hid_match_one_id(hdev, id))
1509                         return id;
1510 
1511         return NULL;
1512 }
1513 
1514 static const struct hid_device_id hid_hiddev_list[] = {
1515         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1516         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1517         { }
1518 };
1519 
1520 static bool hid_hiddev(struct hid_device *hdev)
1521 {
1522         return !!hid_match_id(hdev, hid_hiddev_list);
1523 }
1524 
1525 
1526 static ssize_t
1527 read_report_descriptor(struct file *filp, struct kobject *kobj,
1528                 struct bin_attribute *attr,
1529                 char *buf, loff_t off, size_t count)
1530 {
1531         struct device *dev = container_of(kobj, struct device, kobj);
1532         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1533 
1534         if (off >= hdev->rsize)
1535                 return 0;
1536 
1537         if (off + count > hdev->rsize)
1538                 count = hdev->rsize - off;
1539 
1540         memcpy(buf, hdev->rdesc + off, count);
1541 
1542         return count;
1543 }
1544 
1545 static struct bin_attribute dev_bin_attr_report_desc = {
1546         .attr = { .name = "report_descriptor", .mode = 0444 },
1547         .read = read_report_descriptor,
1548         .size = HID_MAX_DESCRIPTOR_SIZE,
1549 };
1550 
1551 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1552 {
1553         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1554                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1555                 "Multi-Axis Controller"
1556         };
1557         const char *type, *bus;
1558         char buf[64];
1559         unsigned int i;
1560         int len;
1561         int ret;
1562 
1563         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1564                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1565         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1566                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1567         if (hdev->bus != BUS_USB)
1568                 connect_mask &= ~HID_CONNECT_HIDDEV;
1569         if (hid_hiddev(hdev))
1570                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1571 
1572         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1573                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1574                 hdev->claimed |= HID_CLAIMED_INPUT;
1575 
1576         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1577                         !hdev->hiddev_connect(hdev,
1578                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1579                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1580         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1581                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1582 
1583         /* Drivers with the ->raw_event callback set are not required to connect
1584          * to any other listener. */
1585         if (!hdev->claimed && !hdev->driver->raw_event) {
1586                 hid_err(hdev, "device has no listeners, quitting\n");
1587                 return -ENODEV;
1588         }
1589 
1590         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1591                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1592                 hdev->ff_init(hdev);
1593 
1594         len = 0;
1595         if (hdev->claimed & HID_CLAIMED_INPUT)
1596                 len += sprintf(buf + len, "input");
1597         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1598                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1599                                 hdev->minor);
1600         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1601                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1602                                 ((struct hidraw *)hdev->hidraw)->minor);
1603 
1604         type = "Device";
1605         for (i = 0; i < hdev->maxcollection; i++) {
1606                 struct hid_collection *col = &hdev->collection[i];
1607                 if (col->type == HID_COLLECTION_APPLICATION &&
1608                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1609                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1610                         type = types[col->usage & 0xffff];
1611                         break;
1612                 }
1613         }
1614 
1615         switch (hdev->bus) {
1616         case BUS_USB:
1617                 bus = "USB";
1618                 break;
1619         case BUS_BLUETOOTH:
1620                 bus = "BLUETOOTH";
1621                 break;
1622         default:
1623                 bus = "<UNKNOWN>";
1624         }
1625 
1626         ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1627         if (ret)
1628                 hid_warn(hdev,
1629                          "can't create sysfs report descriptor attribute err: %d\n", ret);
1630 
1631         hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1632                  buf, bus, hdev->version >> 8, hdev->version & 0xff,
1633                  type, hdev->name, hdev->phys);
1634 
1635         return 0;
1636 }
1637 EXPORT_SYMBOL_GPL(hid_connect);
1638 
1639 void hid_disconnect(struct hid_device *hdev)
1640 {
1641         device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1642         if (hdev->claimed & HID_CLAIMED_INPUT)
1643                 hidinput_disconnect(hdev);
1644         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1645                 hdev->hiddev_disconnect(hdev);
1646         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1647                 hidraw_disconnect(hdev);
1648 }
1649 EXPORT_SYMBOL_GPL(hid_disconnect);
1650 
1651 /*
1652  * A list of devices for which there is a specialized driver on HID bus.
1653  *
1654  * Please note that for multitouch devices (driven by hid-multitouch driver),
1655  * there is a proper autodetection and autoloading in place (based on presence
1656  * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1657  * as we are doing the right thing in hid_scan_usage().
1658  *
1659  * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1660  * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1661  * used as a driver. See hid_scan_report().
1662  */
1663 static const struct hid_device_id hid_have_special_driver[] = {
1664         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1665         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1666         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1667         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1668         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0xf705) },
1669         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1670         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1671         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1672         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1673         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1674         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1675         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1676         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1677         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1678         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1679         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1680         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1681         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1682         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1683         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1684         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1685         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1686         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1687         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1688         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1689         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1690         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1691         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1692         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1693         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1694         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1695         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1696         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1697         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1698         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1699         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1700         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1701         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1702         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1703         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1704         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1705         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1706         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1707         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1708         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1709         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1710         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1711         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1712         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1713         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1714         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1715         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1716         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1717         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1718         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1719         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1720         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1721         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1722         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1723         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1724         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1725         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1726         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1727         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1728         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1729         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1730         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1731         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1732         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1733         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1734         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1735         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1736         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1737         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1738         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1739         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1740         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1741         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1742         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1743         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1744         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_JIS) },
1745         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1746         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1747         { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1748         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1749         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1750         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1751         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1752         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1753         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1754         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1755         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1756         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1757         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1758         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_CP2112) },
1759         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1760         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1761         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1762         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1763         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1764         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1765         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1766         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1767         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
1768         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
1769         { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1770         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1771         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1772         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1773         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1774         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1775         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1776         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1777         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1778         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1779         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1780         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
1781         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
1782         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
1783         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
1784         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
1785         { HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_580) },
1786         { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1787         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1788         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1789         { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1790         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
1791         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_MANTICORE) },
1792         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
1793         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1794         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1795         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1796         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1797         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1798         { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1799 #if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
1800         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1801 #endif
1802         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1803         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1804         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1805         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1806         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1807         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1808         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1809         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1810         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1811         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1812         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1813         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1814         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1815         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1816         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1817         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1818         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1819         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1820         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1821         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1822         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1823         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_VIBRATION_WHEEL) },
1824         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1825         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1826         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1827         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1828 #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1829         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1830         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1831 #endif
1832         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1833         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1834         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1835         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1836         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1837         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1838         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1839         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1840         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1841         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1842         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1843         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1844         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1845         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1846         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_OFFICE_KB) },
1847         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1848         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1849         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1850         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1851         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1852         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1853         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1854         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1855         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1856         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1857         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1858         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1859         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1860         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1861         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1862         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1863         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1864         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1865         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1866         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1867         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1868         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1869         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1870         { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1871 #if IS_ENABLED(CONFIG_HID_ROCCAT)
1872         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1873         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1874         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKUFX) },
1875         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1876         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1877         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
1878         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
1879         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEXTD) },
1880         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1881         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
1882         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1883         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1884         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK) },
1885         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_GLOW) },
1886         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_PRO) },
1887         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1888 #endif
1889 #if IS_ENABLED(CONFIG_HID_SAITEK)
1890         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1891         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7) },
1892         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_MMO7) },
1893 #endif
1894         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1895         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1896         { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1897         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
1898         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
1899         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1900         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1901         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1902         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1903         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
1904         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
1905         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1906         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
1907         { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
1908         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1909         { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
1910         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1911         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1912         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1913         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1914         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1915         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1916         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1917         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1918         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1919         { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1920         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1921         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1922         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1923         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1924         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1925         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1926         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1927         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1928         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1929         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1930         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1931         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1932         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1933         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1934         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1935         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1936         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1937         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
1938         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1939         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1940         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1941         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1942         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1943         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1944         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1945         { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1946         { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
1947         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1948         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1949         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1950 
1951         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1952         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1953         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1954         { }
1955 };
1956 
1957 struct hid_dynid {
1958         struct list_head list;
1959         struct hid_device_id id;
1960 };
1961 
1962 /**
1963  * store_new_id - add a new HID device ID to this driver and re-probe devices
1964  * @driver: target device driver
1965  * @buf: buffer for scanning device ID data
1966  * @count: input size
1967  *
1968  * Adds a new dynamic hid device ID to this driver,
1969  * and causes the driver to probe for all devices again.
1970  */
1971 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1972                 size_t count)
1973 {
1974         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1975         struct hid_dynid *dynid;
1976         __u32 bus, vendor, product;
1977         unsigned long driver_data = 0;
1978         int ret;
1979 
1980         ret = sscanf(buf, "%x %x %x %lx",
1981                         &bus, &vendor, &product, &driver_data);
1982         if (ret < 3)
1983                 return -EINVAL;
1984 
1985         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1986         if (!dynid)
1987                 return -ENOMEM;
1988 
1989         dynid->id.bus = bus;
1990         dynid->id.group = HID_GROUP_ANY;
1991         dynid->id.vendor = vendor;
1992         dynid->id.product = product;
1993         dynid->id.driver_data = driver_data;
1994 
1995         spin_lock(&hdrv->dyn_lock);
1996         list_add_tail(&dynid->list, &hdrv->dyn_list);
1997         spin_unlock(&hdrv->dyn_lock);
1998 
1999         ret = driver_attach(&hdrv->driver);
2000 
2001         return ret ? : count;
2002 }
2003 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
2004 
2005 static void hid_free_dynids(struct hid_driver *hdrv)
2006 {
2007         struct hid_dynid *dynid, *n;
2008 
2009         spin_lock(&hdrv->dyn_lock);
2010         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
2011                 list_del(&dynid->list);
2012                 kfree(dynid);
2013         }
2014         spin_unlock(&hdrv->dyn_lock);
2015 }
2016 
2017 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
2018                 struct hid_driver *hdrv)
2019 {
2020         struct hid_dynid *dynid;
2021 
2022         spin_lock(&hdrv->dyn_lock);
2023         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
2024                 if (hid_match_one_id(hdev, &dynid->id)) {
2025                         spin_unlock(&hdrv->dyn_lock);
2026                         return &dynid->id;
2027                 }
2028         }
2029         spin_unlock(&hdrv->dyn_lock);
2030 
2031         return hid_match_id(hdev, hdrv->id_table);
2032 }
2033 
2034 static int hid_bus_match(struct device *dev, struct device_driver *drv)
2035 {
2036         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
2037         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2038 
2039         return hid_match_device(hdev, hdrv) != NULL;
2040 }
2041 
2042 static int hid_device_probe(struct device *dev)
2043 {
2044         struct hid_driver *hdrv = container_of(dev->driver,
2045                         struct hid_driver, driver);
2046         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2047         const struct hid_device_id *id;
2048         int ret = 0;
2049 
2050         if (down_interruptible(&hdev->driver_lock))
2051                 return -EINTR;
2052         if (down_interruptible(&hdev->driver_input_lock)) {
2053                 ret = -EINTR;
2054                 goto unlock_driver_lock;
2055         }
2056         hdev->io_started = false;
2057 
2058         if (!hdev->driver) {
2059                 id = hid_match_device(hdev, hdrv);
2060                 if (id == NULL) {
2061                         ret = -ENODEV;
2062                         goto unlock;
2063                 }
2064 
2065                 hdev->driver = hdrv;
2066                 if (hdrv->probe) {
2067                         ret = hdrv->probe(hdev, id);
2068                 } else { /* default probe */
2069                         ret = hid_open_report(hdev);
2070                         if (!ret)
2071                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
2072                 }
2073                 if (ret) {
2074                         hid_close_report(hdev);
2075                         hdev->driver = NULL;
2076                 }
2077         }
2078 unlock:
2079         if (!hdev->io_started)
2080                 up(&hdev->driver_input_lock);
2081 unlock_driver_lock:
2082         up(&hdev->driver_lock);
2083         return ret;
2084 }
2085 
2086 static int hid_device_remove(struct device *dev)
2087 {
2088         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2089         struct hid_driver *hdrv;
2090         int ret = 0;
2091 
2092         if (down_interruptible(&hdev->driver_lock))
2093                 return -EINTR;
2094         if (down_interruptible(&hdev->driver_input_lock)) {
2095                 ret = -EINTR;
2096                 goto unlock_driver_lock;
2097         }
2098         hdev->io_started = false;
2099 
2100         hdrv = hdev->driver;
2101         if (hdrv) {
2102                 if (hdrv->remove)
2103                         hdrv->remove(hdev);
2104                 else /* default remove */
2105                         hid_hw_stop(hdev);
2106                 hid_close_report(hdev);
2107                 hdev->driver = NULL;
2108         }
2109 
2110         if (!hdev->io_started)
2111                 up(&hdev->driver_input_lock);
2112 unlock_driver_lock:
2113         up(&hdev->driver_lock);
2114         return ret;
2115 }
2116 
2117 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
2118                              char *buf)
2119 {
2120         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2121         int len;
2122 
2123         len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
2124                        hdev->bus, hdev->group, hdev->vendor, hdev->product);
2125 
2126         return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
2127 }
2128 static DEVICE_ATTR_RO(modalias);
2129 
2130 static struct attribute *hid_dev_attrs[] = {
2131         &dev_attr_modalias.attr,
2132         NULL,
2133 };
2134 ATTRIBUTE_GROUPS(hid_dev);
2135 
2136 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
2137 {
2138         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2139 
2140         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
2141                         hdev->bus, hdev->vendor, hdev->product))
2142                 return -ENOMEM;
2143 
2144         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
2145                 return -ENOMEM;
2146 
2147         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
2148                 return -ENOMEM;
2149 
2150         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
2151                 return -ENOMEM;
2152 
2153         if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
2154                            hdev->bus, hdev->group, hdev->vendor, hdev->product))
2155                 return -ENOMEM;
2156 
2157         return 0;
2158 }
2159 
2160 static struct bus_type hid_bus_type = {
2161         .name           = "hid",
2162         .dev_groups     = hid_dev_groups,
2163         .match          = hid_bus_match,
2164         .probe          = hid_device_probe,
2165         .remove         = hid_device_remove,
2166         .uevent         = hid_uevent,
2167 };
2168 
2169 /* a list of devices that shouldn't be handled by HID core at all */
2170 static const struct hid_device_id hid_ignore_list[] = {
2171         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
2172         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
2173         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
2174         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
2175         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
2176         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
2177         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
2178         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
2179         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
2180         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
2181         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
2182         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
2183         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
2184         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
2185         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
2186         { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
2187         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
2188         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
2189         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
2190         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI4713) },
2191         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
2192         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
2193         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
2194         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
2195         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
2196         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
2197         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
2198         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
2199         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
2200         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
2201         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
2202         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
2203         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
2204         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
2205         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
2206         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
2207         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
2208         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
2209         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
2210         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
2211         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
2212         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
2213         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2214         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2215         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2216         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2217         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2218         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2219         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2220         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2221         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2222         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2223         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2224         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2225         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2226         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2227         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2228         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2229         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2230         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2231         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2232         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2233         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2234         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2235         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2236         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2237         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2238         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2239         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2240         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2241         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2242         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2243         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2244         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2245         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2246         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2247         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2248         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2249         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2250         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2251         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2252         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2253         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2254         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2255         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2256         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2257         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2258         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2259         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2260         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2261         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2262         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2263         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2264         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2265         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2266         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2267         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
2268         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
2269         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2270         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2271         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2272         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2273         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2274         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2275         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2276         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2277         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2278         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2279         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2280         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2281         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2282         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2283         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2284         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2285         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2286         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2287         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2288         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2289         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2290         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2291         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2292         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2293         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2294         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2295         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2296         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2297         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2298         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2299         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2300         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2301         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2302         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2303         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2304         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2305         { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2306         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2307         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2308         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2309         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2310         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2311         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2312         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2313         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2314         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2315         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2316         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2317         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2318         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2319         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2320         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2321         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2322         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2323         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2324         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2325         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2326         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2327 #if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2328         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2329         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2330         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2331         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2332         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2333         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2334         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2335         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2336 #endif
2337         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2338         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2339         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2340         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2341         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2342         { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
2343         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2344         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2345         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2346         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2347         { HID_USB_DEVICE(USB_VENDOR_ID_RISO_KAGAKU, USB_DEVICE_ID_RI_KA_WEBMAIL) },
2348         { }
2349 };
2350 
2351 /**
2352  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2353  *
2354  * There are composite devices for which we want to ignore only a certain
2355  * interface. This is a list of devices for which only the mouse interface will
2356  * be ignored. This allows a dedicated driver to take care of the interface.
2357  */
2358 static const struct hid_device_id hid_mouse_ignore_list[] = {
2359         /* appletouch driver */
2360         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2361         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2362         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2363         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2364         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2365         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2366         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2367         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2368         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2369         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2370         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2371         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2372         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2373         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2374         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2375         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2376         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2377         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2378         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2379         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2380         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2381         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2382         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2383         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2384         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2385         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2386         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2387         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2388         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2389         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2390         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2391         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2392         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2393         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2394         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2395         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2396         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2397         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2398         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2399         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2400         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2401         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2402         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2403         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2404         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2405         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2406         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2407         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2408         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2409         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2410         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2411         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2412         { }
2413 };
2414 
2415 bool hid_ignore(struct hid_device *hdev)
2416 {
2417         if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2418                 return false;
2419         if (hdev->quirks & HID_QUIRK_IGNORE)
2420                 return true;
2421 
2422         switch (hdev->vendor) {
2423         case USB_VENDOR_ID_CODEMERCS:
2424                 /* ignore all Code Mercenaries IOWarrior devices */
2425                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2426                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2427                         return true;
2428                 break;
2429         case USB_VENDOR_ID_LOGITECH:
2430                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2431                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2432                         return true;
2433                 /*
2434                  * The Keene FM transmitter USB device has the same USB ID as
2435                  * the Logitech AudioHub Speaker, but it should ignore the hid.
2436                  * Check if the name is that of the Keene device.
2437                  * For reference: the name of the AudioHub is
2438                  * "HOLTEK  AudioHub Speaker".
2439                  */
2440                 if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2441                         !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2442                                 return true;
2443                 break;
2444         case USB_VENDOR_ID_SOUNDGRAPH:
2445                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2446                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2447                         return true;
2448                 break;
2449         case USB_VENDOR_ID_HANWANG:
2450                 if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2451                     hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2452                         return true;
2453                 break;
2454         case USB_VENDOR_ID_JESS:
2455                 if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2456                                 hdev->type == HID_TYPE_USBNONE)
2457                         return true;
2458                 break;
2459         case USB_VENDOR_ID_VELLEMAN:
2460                 /* These are not HID devices.  They are handled by comedi. */
2461                 if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2462                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2463                     (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2464                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2465                         return true;
2466                 break;
2467         case USB_VENDOR_ID_ATMEL_V_USB:
2468                 /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2469                  * it has the same USB ID as many Atmel V-USB devices. This
2470                  * usb radio is handled by radio-ma901.c driver so we want
2471                  * ignore the hid. Check the name, bus, product and ignore
2472                  * if we have MA901 usb radio.
2473                  */
2474                 if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2475                         hdev->bus == BUS_USB &&
2476                         strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2477                         return true;
2478                 break;
2479         }
2480 
2481         if (hdev->type == HID_TYPE_USBMOUSE &&
2482                         hid_match_id(hdev, hid_mouse_ignore_list))
2483                 return true;
2484 
2485         return !!hid_match_id(hdev, hid_ignore_list);
2486 }
2487 EXPORT_SYMBOL_GPL(hid_ignore);
2488 
2489 int hid_add_device(struct hid_device *hdev)
2490 {
2491         static atomic_t id = ATOMIC_INIT(0);
2492         int ret;
2493 
2494         if (WARN_ON(hdev->status & HID_STAT_ADDED))
2495                 return -EBUSY;
2496 
2497         /* we need to kill them here, otherwise they will stay allocated to
2498          * wait for coming driver */
2499         if (hid_ignore(hdev))
2500                 return -ENODEV;
2501 
2502         /*
2503          * Check for the mandatory transport channel.
2504          */
2505          if (!hdev->ll_driver->raw_request) {
2506                 hid_err(hdev, "transport driver missing .raw_request()\n");
2507                 return -EINVAL;
2508          }
2509 
2510         /*
2511          * Read the device report descriptor once and use as template
2512          * for the driver-specific modifications.
2513          */
2514         ret = hdev->ll_driver->parse(hdev);
2515         if (ret)
2516                 return ret;
2517         if (!hdev->dev_rdesc)
2518                 return -ENODEV;
2519 
2520         /*
2521          * Scan generic devices for group information
2522          */
2523         if (hid_ignore_special_drivers ||
2524             !hid_match_id(hdev, hid_have_special_driver)) {
2525                 ret = hid_scan_report(hdev);
2526                 if (ret)
2527                         hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2528         }
2529 
2530         /* XXX hack, any other cleaner solution after the driver core
2531          * is converted to allow more than 20 bytes as the device name? */
2532         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2533                      hdev->vendor, hdev->product, atomic_inc_return(&id));
2534 
2535         hid_debug_register(hdev, dev_name(&hdev->dev));
2536         ret = device_add(&hdev->dev);
2537         if (!ret)
2538                 hdev->status |= HID_STAT_ADDED;
2539         else
2540                 hid_debug_unregister(hdev);
2541 
2542         return ret;
2543 }
2544 EXPORT_SYMBOL_GPL(hid_add_device);
2545 
2546 /**
2547  * hid_allocate_device - allocate new hid device descriptor
2548  *
2549  * Allocate and initialize hid device, so that hid_destroy_device might be
2550  * used to free it.
2551  *
2552  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2553  * error value.
2554  */
2555 struct hid_device *hid_allocate_device(void)
2556 {
2557         struct hid_device *hdev;
2558         int ret = -ENOMEM;
2559 
2560         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2561         if (hdev == NULL)
2562                 return ERR_PTR(ret);
2563 
2564         device_initialize(&hdev->dev);
2565         hdev->dev.release = hid_device_release;
2566         hdev->dev.bus = &hid_bus_type;
2567 
2568         hid_close_report(hdev);
2569 
2570         init_waitqueue_head(&hdev->debug_wait);
2571         INIT_LIST_HEAD(&hdev->debug_list);
2572         spin_lock_init(&hdev->debug_list_lock);
2573         sema_init(&hdev->driver_lock, 1);
2574         sema_init(&hdev->driver_input_lock, 1);
2575 
2576         return hdev;
2577 }
2578 EXPORT_SYMBOL_GPL(hid_allocate_device);
2579 
2580 static void hid_remove_device(struct hid_device *hdev)
2581 {
2582         if (hdev->status & HID_STAT_ADDED) {
2583                 device_del(&hdev->dev);
2584                 hid_debug_unregister(hdev);
2585                 hdev->status &= ~HID_STAT_ADDED;
2586         }
2587         kfree(hdev->dev_rdesc);
2588         hdev->dev_rdesc = NULL;
2589         hdev->dev_rsize = 0;
2590 }
2591 
2592 /**
2593  * hid_destroy_device - free previously allocated device
2594  *
2595  * @hdev: hid device
2596  *
2597  * If you allocate hid_device through hid_allocate_device, you should ever
2598  * free by this function.
2599  */
2600 void hid_destroy_device(struct hid_device *hdev)
2601 {
2602         hid_remove_device(hdev);
2603         put_device(&hdev->dev);
2604 }
2605 EXPORT_SYMBOL_GPL(hid_destroy_device);
2606 
2607 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2608                 const char *mod_name)
2609 {
2610         int ret;
2611 
2612         hdrv->driver.name = hdrv->name;
2613         hdrv->driver.bus = &hid_bus_type;
2614         hdrv->driver.owner = owner;
2615         hdrv->driver.mod_name = mod_name;
2616 
2617         INIT_LIST_HEAD(&hdrv->dyn_list);
2618         spin_lock_init(&hdrv->dyn_lock);
2619 
2620         ret = driver_register(&hdrv->driver);
2621         if (ret)
2622                 return ret;
2623 
2624         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2625         if (ret)
2626                 driver_unregister(&hdrv->driver);
2627 
2628         return ret;
2629 }
2630 EXPORT_SYMBOL_GPL(__hid_register_driver);
2631 
2632 void hid_unregister_driver(struct hid_driver *hdrv)
2633 {
2634         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2635         driver_unregister(&hdrv->driver);
2636         hid_free_dynids(hdrv);
2637 }
2638 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2639 
2640 int hid_check_keys_pressed(struct hid_device *hid)
2641 {
2642         struct hid_input *hidinput;
2643         int i;
2644 
2645         if (!(hid->claimed & HID_CLAIMED_INPUT))
2646                 return 0;
2647 
2648         list_for_each_entry(hidinput, &hid->inputs, list) {
2649                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2650                         if (hidinput->input->key[i])
2651                                 return 1;
2652         }
2653 
2654         return 0;
2655 }
2656 
2657 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2658 
2659 static int __init hid_init(void)
2660 {
2661         int ret;
2662 
2663         if (hid_debug)
2664                 pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2665                         "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2666 
2667         ret = bus_register(&hid_bus_type);
2668         if (ret) {
2669                 pr_err("can't register hid bus\n");
2670                 goto err;
2671         }
2672 
2673         ret = hidraw_init();
2674         if (ret)
2675                 goto err_bus;
2676 
2677         hid_debug_init();
2678 
2679         return 0;
2680 err_bus:
2681         bus_unregister(&hid_bus_type);
2682 err:
2683         return ret;
2684 }
2685 
2686 static void __exit hid_exit(void)
2687 {
2688         hid_debug_exit();
2689         hidraw_exit();
2690         bus_unregister(&hid_bus_type);
2691 }
2692 
2693 module_init(hid_init);
2694 module_exit(hid_exit);
2695 
2696 MODULE_AUTHOR("Andreas Gal");
2697 MODULE_AUTHOR("Vojtech Pavlik");
2698 MODULE_AUTHOR("Jiri Kosina");
2699 MODULE_LICENSE(DRIVER_LICENSE);
2700 
2701 

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