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Jiri Kosinadde58452006-12-08 18:40:44 +01001/*
Jiri Kosina229695e2006-12-08 18:40:53 +01002 * HID support for Linux
Jiri Kosinadde58452006-12-08 18:40:44 +01003 *
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
Jiri Kosinaf142b3a42007-04-16 11:29:28 +02007 * Copyright (c) 2006-2007 Jiri Kosina
Jiri Kosinadde58452006-12-08 18:40:44 +01008 */
9
10/*
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
14 * any later version.
15 */
16
17#include <linux/module.h>
18#include <linux/slab.h>
19#include <linux/init.h>
20#include <linux/kernel.h>
Jiri Kosinadde58452006-12-08 18:40:44 +010021#include <linux/list.h>
22#include <linux/mm.h>
Jiri Kosinadde58452006-12-08 18:40:44 +010023#include <linux/spinlock.h>
24#include <asm/unaligned.h>
25#include <asm/byteorder.h>
26#include <linux/input.h>
27#include <linux/wait.h>
Jiri Kosina47a80ed2007-03-12 14:55:12 +010028#include <linux/vmalloc.h>
Jiri Kosinac4124c92007-11-30 11:12:58 +010029#include <linux/sched.h>
Jiri Kosinadde58452006-12-08 18:40:44 +010030
Jiri Kosinadde58452006-12-08 18:40:44 +010031#include <linux/hid.h>
32#include <linux/hiddev.h>
Jiri Kosinac080d892007-01-25 11:43:31 +010033#include <linux/hid-debug.h>
Jiri Kosina86166b72007-05-14 09:57:40 +020034#include <linux/hidraw.h>
Jiri Kosinadde58452006-12-08 18:40:44 +010035
Jiri Slaby5f22a792008-05-16 11:49:19 +020036#include "hid-ids.h"
37
Jiri Kosinadde58452006-12-08 18:40:44 +010038/*
39 * Version Information
40 */
41
42#define DRIVER_VERSION "v2.6"
Jiri Kosinaf142b3a42007-04-16 11:29:28 +020043#define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik, Jiri Kosina"
Jiri Kosina53149802007-01-09 13:24:25 +010044#define DRIVER_DESC "HID core driver"
Jiri Kosinadde58452006-12-08 18:40:44 +010045#define DRIVER_LICENSE "GPL"
46
Jiri Kosina58037eb2007-05-30 15:07:13 +020047#ifdef CONFIG_HID_DEBUG
48int hid_debug = 0;
Anssi Hannula377e10f2008-03-22 23:50:13 +010049module_param_named(debug, hid_debug, int, 0600);
50MODULE_PARM_DESC(debug, "HID debugging (0=off, 1=probing info, 2=continuous data dumping)");
Jiri Kosina58037eb2007-05-30 15:07:13 +020051EXPORT_SYMBOL_GPL(hid_debug);
52#endif
53
Jiri Kosinadde58452006-12-08 18:40:44 +010054/*
Jiri Kosinadde58452006-12-08 18:40:44 +010055 * Register a new report for a device.
56 */
57
58static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
59{
60 struct hid_report_enum *report_enum = device->report_enum + type;
61 struct hid_report *report;
62
63 if (report_enum->report_id_hash[id])
64 return report_enum->report_id_hash[id];
65
66 if (!(report = kzalloc(sizeof(struct hid_report), GFP_KERNEL)))
67 return NULL;
68
69 if (id != 0)
70 report_enum->numbered = 1;
71
72 report->id = id;
73 report->type = type;
74 report->size = 0;
75 report->device = device;
76 report_enum->report_id_hash[id] = report;
77
78 list_add_tail(&report->list, &report_enum->report_list);
79
80 return report;
81}
82
83/*
84 * Register a new field for this report.
85 */
86
87static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
88{
89 struct hid_field *field;
90
91 if (report->maxfield == HID_MAX_FIELDS) {
Jiri Kosina58037eb2007-05-30 15:07:13 +020092 dbg_hid("too many fields in report\n");
Jiri Kosinadde58452006-12-08 18:40:44 +010093 return NULL;
94 }
95
96 if (!(field = kzalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
97 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
98
99 field->index = report->maxfield++;
100 report->field[field->index] = field;
101 field->usage = (struct hid_usage *)(field + 1);
Jiri Slaby282bfd42008-03-28 17:06:41 +0100102 field->value = (s32 *)(field->usage + usages);
Jiri Kosinadde58452006-12-08 18:40:44 +0100103 field->report = report;
104
105 return field;
106}
107
108/*
109 * Open a collection. The type/usage is pushed on the stack.
110 */
111
112static int open_collection(struct hid_parser *parser, unsigned type)
113{
114 struct hid_collection *collection;
115 unsigned usage;
116
117 usage = parser->local.usage[0];
118
119 if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200120 dbg_hid("collection stack overflow\n");
Jiri Kosinadde58452006-12-08 18:40:44 +0100121 return -1;
122 }
123
124 if (parser->device->maxcollection == parser->device->collection_size) {
125 collection = kmalloc(sizeof(struct hid_collection) *
126 parser->device->collection_size * 2, GFP_KERNEL);
127 if (collection == NULL) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200128 dbg_hid("failed to reallocate collection array\n");
Jiri Kosinadde58452006-12-08 18:40:44 +0100129 return -1;
130 }
131 memcpy(collection, parser->device->collection,
132 sizeof(struct hid_collection) *
133 parser->device->collection_size);
134 memset(collection + parser->device->collection_size, 0,
135 sizeof(struct hid_collection) *
136 parser->device->collection_size);
137 kfree(parser->device->collection);
138 parser->device->collection = collection;
139 parser->device->collection_size *= 2;
140 }
141
142 parser->collection_stack[parser->collection_stack_ptr++] =
143 parser->device->maxcollection;
144
145 collection = parser->device->collection +
146 parser->device->maxcollection++;
147 collection->type = type;
148 collection->usage = usage;
149 collection->level = parser->collection_stack_ptr - 1;
150
151 if (type == HID_COLLECTION_APPLICATION)
152 parser->device->maxapplication++;
153
154 return 0;
155}
156
157/*
158 * Close a collection.
159 */
160
161static int close_collection(struct hid_parser *parser)
162{
163 if (!parser->collection_stack_ptr) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200164 dbg_hid("collection stack underflow\n");
Jiri Kosinadde58452006-12-08 18:40:44 +0100165 return -1;
166 }
167 parser->collection_stack_ptr--;
168 return 0;
169}
170
171/*
172 * Climb up the stack, search for the specified collection type
173 * and return the usage.
174 */
175
176static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
177{
178 int n;
179 for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
180 if (parser->device->collection[parser->collection_stack[n]].type == type)
181 return parser->device->collection[parser->collection_stack[n]].usage;
182 return 0; /* we know nothing about this usage type */
183}
184
185/*
186 * Add a usage to the temporary parser table.
187 */
188
189static int hid_add_usage(struct hid_parser *parser, unsigned usage)
190{
191 if (parser->local.usage_index >= HID_MAX_USAGES) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200192 dbg_hid("usage index exceeded\n");
Jiri Kosinadde58452006-12-08 18:40:44 +0100193 return -1;
194 }
195 parser->local.usage[parser->local.usage_index] = usage;
196 parser->local.collection_index[parser->local.usage_index] =
197 parser->collection_stack_ptr ?
198 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
199 parser->local.usage_index++;
200 return 0;
201}
202
203/*
204 * Register a new field for this report.
205 */
206
207static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
208{
209 struct hid_report *report;
210 struct hid_field *field;
211 int usages;
212 unsigned offset;
213 int i;
214
215 if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200216 dbg_hid("hid_register_report failed\n");
Jiri Kosinadde58452006-12-08 18:40:44 +0100217 return -1;
218 }
219
220 if (parser->global.logical_maximum < parser->global.logical_minimum) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200221 dbg_hid("logical range invalid %d %d\n", parser->global.logical_minimum, parser->global.logical_maximum);
Jiri Kosinadde58452006-12-08 18:40:44 +0100222 return -1;
223 }
224
225 offset = report->size;
226 report->size += parser->global.report_size * parser->global.report_count;
227
228 if (!parser->local.usage_index) /* Ignore padding fields */
229 return 0;
230
231 usages = max_t(int, parser->local.usage_index, parser->global.report_count);
232
233 if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
234 return 0;
235
236 field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
237 field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
238 field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
239
240 for (i = 0; i < usages; i++) {
241 int j = i;
242 /* Duplicate the last usage we parsed if we have excess values */
243 if (i >= parser->local.usage_index)
244 j = parser->local.usage_index - 1;
245 field->usage[i].hid = parser->local.usage[j];
246 field->usage[i].collection_index =
247 parser->local.collection_index[j];
248 }
249
250 field->maxusage = usages;
251 field->flags = flags;
252 field->report_offset = offset;
253 field->report_type = report_type;
254 field->report_size = parser->global.report_size;
255 field->report_count = parser->global.report_count;
256 field->logical_minimum = parser->global.logical_minimum;
257 field->logical_maximum = parser->global.logical_maximum;
258 field->physical_minimum = parser->global.physical_minimum;
259 field->physical_maximum = parser->global.physical_maximum;
260 field->unit_exponent = parser->global.unit_exponent;
261 field->unit = parser->global.unit;
262
263 return 0;
264}
265
266/*
267 * Read data value from item.
268 */
269
270static u32 item_udata(struct hid_item *item)
271{
272 switch (item->size) {
Jiri Slaby880d29f2008-06-18 23:55:41 +0200273 case 1: return item->data.u8;
274 case 2: return item->data.u16;
275 case 4: return item->data.u32;
Jiri Kosinadde58452006-12-08 18:40:44 +0100276 }
277 return 0;
278}
279
280static s32 item_sdata(struct hid_item *item)
281{
282 switch (item->size) {
Jiri Slaby880d29f2008-06-18 23:55:41 +0200283 case 1: return item->data.s8;
284 case 2: return item->data.s16;
285 case 4: return item->data.s32;
Jiri Kosinadde58452006-12-08 18:40:44 +0100286 }
287 return 0;
288}
289
290/*
291 * Process a global item.
292 */
293
294static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
295{
296 switch (item->tag) {
Jiri Slaby880d29f2008-06-18 23:55:41 +0200297 case HID_GLOBAL_ITEM_TAG_PUSH:
Jiri Kosinadde58452006-12-08 18:40:44 +0100298
Jiri Slaby880d29f2008-06-18 23:55:41 +0200299 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
300 dbg_hid("global enviroment stack overflow\n");
Jiri Kosinadde58452006-12-08 18:40:44 +0100301 return -1;
Jiri Slaby880d29f2008-06-18 23:55:41 +0200302 }
303
304 memcpy(parser->global_stack + parser->global_stack_ptr++,
305 &parser->global, sizeof(struct hid_global));
306 return 0;
307
308 case HID_GLOBAL_ITEM_TAG_POP:
309
310 if (!parser->global_stack_ptr) {
311 dbg_hid("global enviroment stack underflow\n");
312 return -1;
313 }
314
315 memcpy(&parser->global, parser->global_stack +
316 --parser->global_stack_ptr, sizeof(struct hid_global));
317 return 0;
318
319 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
320 parser->global.usage_page = item_udata(item);
321 return 0;
322
323 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
324 parser->global.logical_minimum = item_sdata(item);
325 return 0;
326
327 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
328 if (parser->global.logical_minimum < 0)
329 parser->global.logical_maximum = item_sdata(item);
330 else
331 parser->global.logical_maximum = item_udata(item);
332 return 0;
333
334 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
335 parser->global.physical_minimum = item_sdata(item);
336 return 0;
337
338 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
339 if (parser->global.physical_minimum < 0)
340 parser->global.physical_maximum = item_sdata(item);
341 else
342 parser->global.physical_maximum = item_udata(item);
343 return 0;
344
345 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
346 parser->global.unit_exponent = item_sdata(item);
347 return 0;
348
349 case HID_GLOBAL_ITEM_TAG_UNIT:
350 parser->global.unit = item_udata(item);
351 return 0;
352
353 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
354 parser->global.report_size = item_udata(item);
355 if (parser->global.report_size > 32) {
356 dbg_hid("invalid report_size %d\n",
357 parser->global.report_size);
358 return -1;
359 }
360 return 0;
361
362 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
363 parser->global.report_count = item_udata(item);
364 if (parser->global.report_count > HID_MAX_USAGES) {
365 dbg_hid("invalid report_count %d\n",
366 parser->global.report_count);
367 return -1;
368 }
369 return 0;
370
371 case HID_GLOBAL_ITEM_TAG_REPORT_ID:
372 parser->global.report_id = item_udata(item);
373 if (parser->global.report_id == 0) {
374 dbg_hid("report_id 0 is invalid\n");
375 return -1;
376 }
377 return 0;
378
379 default:
380 dbg_hid("unknown global tag 0x%x\n", item->tag);
381 return -1;
Jiri Kosinadde58452006-12-08 18:40:44 +0100382 }
383}
384
385/*
386 * Process a local item.
387 */
388
389static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
390{
391 __u32 data;
392 unsigned n;
393
394 if (item->size == 0) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200395 dbg_hid("item data expected for local item\n");
Jiri Kosinadde58452006-12-08 18:40:44 +0100396 return -1;
397 }
398
399 data = item_udata(item);
400
401 switch (item->tag) {
Jiri Slaby880d29f2008-06-18 23:55:41 +0200402 case HID_LOCAL_ITEM_TAG_DELIMITER:
Jiri Kosinadde58452006-12-08 18:40:44 +0100403
Jiri Slaby880d29f2008-06-18 23:55:41 +0200404 if (data) {
405 /*
406 * We treat items before the first delimiter
407 * as global to all usage sets (branch 0).
408 * In the moment we process only these global
409 * items and the first delimiter set.
410 */
411 if (parser->local.delimiter_depth != 0) {
412 dbg_hid("nested delimiters\n");
413 return -1;
Jiri Kosinadde58452006-12-08 18:40:44 +0100414 }
Jiri Slaby880d29f2008-06-18 23:55:41 +0200415 parser->local.delimiter_depth++;
416 parser->local.delimiter_branch++;
417 } else {
418 if (parser->local.delimiter_depth < 1) {
419 dbg_hid("bogus close delimiter\n");
420 return -1;
Jiri Kosinadde58452006-12-08 18:40:44 +0100421 }
Jiri Slaby880d29f2008-06-18 23:55:41 +0200422 parser->local.delimiter_depth--;
423 }
424 return 1;
Jiri Kosinadde58452006-12-08 18:40:44 +0100425
Jiri Slaby880d29f2008-06-18 23:55:41 +0200426 case HID_LOCAL_ITEM_TAG_USAGE:
Jiri Kosinadde58452006-12-08 18:40:44 +0100427
Jiri Slaby880d29f2008-06-18 23:55:41 +0200428 if (parser->local.delimiter_branch > 1) {
429 dbg_hid("alternative usage ignored\n");
Jiri Kosinadde58452006-12-08 18:40:44 +0100430 return 0;
Jiri Slaby880d29f2008-06-18 23:55:41 +0200431 }
Jiri Kosinadde58452006-12-08 18:40:44 +0100432
Jiri Slaby880d29f2008-06-18 23:55:41 +0200433 if (item->size <= 2)
434 data = (parser->global.usage_page << 16) + data;
Jiri Kosinadde58452006-12-08 18:40:44 +0100435
Jiri Slaby880d29f2008-06-18 23:55:41 +0200436 return hid_add_usage(parser, data);
437
438 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
439
440 if (parser->local.delimiter_branch > 1) {
441 dbg_hid("alternative usage ignored\n");
442 return 0;
443 }
444
445 if (item->size <= 2)
446 data = (parser->global.usage_page << 16) + data;
447
448 parser->local.usage_minimum = data;
449 return 0;
450
451 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
452
453 if (parser->local.delimiter_branch > 1) {
454 dbg_hid("alternative usage ignored\n");
455 return 0;
456 }
457
458 if (item->size <= 2)
459 data = (parser->global.usage_page << 16) + data;
460
461 for (n = parser->local.usage_minimum; n <= data; n++)
462 if (hid_add_usage(parser, n)) {
463 dbg_hid("hid_add_usage failed\n");
464 return -1;
Jiri Kosinadde58452006-12-08 18:40:44 +0100465 }
Jiri Slaby880d29f2008-06-18 23:55:41 +0200466 return 0;
Jiri Kosinadde58452006-12-08 18:40:44 +0100467
Jiri Slaby880d29f2008-06-18 23:55:41 +0200468 default:
Jiri Kosinadde58452006-12-08 18:40:44 +0100469
Jiri Slaby880d29f2008-06-18 23:55:41 +0200470 dbg_hid("unknown local item tag 0x%x\n", item->tag);
471 return 0;
Jiri Kosinadde58452006-12-08 18:40:44 +0100472 }
473 return 0;
474}
475
476/*
477 * Process a main item.
478 */
479
480static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
481{
482 __u32 data;
483 int ret;
484
485 data = item_udata(item);
486
487 switch (item->tag) {
Jiri Slaby880d29f2008-06-18 23:55:41 +0200488 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
489 ret = open_collection(parser, data & 0xff);
490 break;
491 case HID_MAIN_ITEM_TAG_END_COLLECTION:
492 ret = close_collection(parser);
493 break;
494 case HID_MAIN_ITEM_TAG_INPUT:
495 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
496 break;
497 case HID_MAIN_ITEM_TAG_OUTPUT:
498 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
499 break;
500 case HID_MAIN_ITEM_TAG_FEATURE:
501 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
502 break;
503 default:
504 dbg_hid("unknown main item tag 0x%x\n", item->tag);
505 ret = 0;
Jiri Kosinadde58452006-12-08 18:40:44 +0100506 }
507
508 memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */
509
510 return ret;
511}
512
513/*
514 * Process a reserved item.
515 */
516
517static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
518{
Jiri Kosina58037eb2007-05-30 15:07:13 +0200519 dbg_hid("reserved item type, tag 0x%x\n", item->tag);
Jiri Kosinadde58452006-12-08 18:40:44 +0100520 return 0;
521}
522
523/*
524 * Free a report and all registered fields. The field->usage and
525 * field->value table's are allocated behind the field, so we need
526 * only to free(field) itself.
527 */
528
529static void hid_free_report(struct hid_report *report)
530{
531 unsigned n;
532
533 for (n = 0; n < report->maxfield; n++)
534 kfree(report->field[n]);
535 kfree(report);
536}
537
538/*
539 * Free a device structure, all reports, and all fields.
540 */
541
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200542static void hid_device_release(struct device *dev)
Jiri Kosinadde58452006-12-08 18:40:44 +0100543{
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200544 struct hid_device *device = container_of(dev, struct hid_device, dev);
545 unsigned i, j;
Jiri Kosinadde58452006-12-08 18:40:44 +0100546
547 for (i = 0; i < HID_REPORT_TYPES; i++) {
548 struct hid_report_enum *report_enum = device->report_enum + i;
549
550 for (j = 0; j < 256; j++) {
551 struct hid_report *report = report_enum->report_id_hash[j];
552 if (report)
553 hid_free_report(report);
554 }
555 }
556
557 kfree(device->rdesc);
Jiri Kosina767fe782007-01-24 23:05:07 +0100558 kfree(device->collection);
Jiri Kosinadde58452006-12-08 18:40:44 +0100559 kfree(device);
560}
561
562/*
563 * Fetch a report description item from the data stream. We support long
564 * items, though they are not used yet.
565 */
566
567static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
568{
569 u8 b;
570
571 if ((end - start) <= 0)
572 return NULL;
573
574 b = *start++;
575
576 item->type = (b >> 2) & 3;
577 item->tag = (b >> 4) & 15;
578
579 if (item->tag == HID_ITEM_TAG_LONG) {
580
581 item->format = HID_ITEM_FORMAT_LONG;
582
583 if ((end - start) < 2)
584 return NULL;
585
586 item->size = *start++;
587 item->tag = *start++;
588
589 if ((end - start) < item->size)
590 return NULL;
591
592 item->data.longdata = start;
593 start += item->size;
594 return start;
595 }
596
597 item->format = HID_ITEM_FORMAT_SHORT;
598 item->size = b & 3;
599
600 switch (item->size) {
Jiri Slaby880d29f2008-06-18 23:55:41 +0200601 case 0:
602 return start;
Jiri Kosinadde58452006-12-08 18:40:44 +0100603
Jiri Slaby880d29f2008-06-18 23:55:41 +0200604 case 1:
605 if ((end - start) < 1)
606 return NULL;
607 item->data.u8 = *start++;
608 return start;
Jiri Kosinadde58452006-12-08 18:40:44 +0100609
Jiri Slaby880d29f2008-06-18 23:55:41 +0200610 case 2:
611 if ((end - start) < 2)
612 return NULL;
613 item->data.u16 = get_unaligned_le16(start);
614 start = (__u8 *)((__le16 *)start + 1);
615 return start;
Jiri Kosinadde58452006-12-08 18:40:44 +0100616
Jiri Slaby880d29f2008-06-18 23:55:41 +0200617 case 3:
618 item->size++;
619 if ((end - start) < 4)
620 return NULL;
621 item->data.u32 = get_unaligned_le32(start);
622 start = (__u8 *)((__le32 *)start + 1);
623 return start;
Jiri Kosinadde58452006-12-08 18:40:44 +0100624 }
625
626 return NULL;
627}
628
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200629/**
630 * hid_parse_report - parse device report
631 *
632 * @device: hid device
633 * @start: report start
634 * @size: report size
635 *
Jiri Kosinadde58452006-12-08 18:40:44 +0100636 * Parse a report description into a hid_device structure. Reports are
637 * enumerated, fields are attached to these reports.
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200638 * 0 returned on success, otherwise nonzero error value.
Jiri Kosinadde58452006-12-08 18:40:44 +0100639 */
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200640int hid_parse_report(struct hid_device *device, __u8 *start,
641 unsigned size)
Jiri Kosinadde58452006-12-08 18:40:44 +0100642{
Jiri Kosinadde58452006-12-08 18:40:44 +0100643 struct hid_parser *parser;
644 struct hid_item item;
645 __u8 *end;
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200646 int ret;
Jiri Kosinadde58452006-12-08 18:40:44 +0100647 static int (*dispatch_type[])(struct hid_parser *parser,
648 struct hid_item *item) = {
649 hid_parser_main,
650 hid_parser_global,
651 hid_parser_local,
652 hid_parser_reserved
653 };
654
Jiri Slabyc500c972008-05-16 11:49:16 +0200655 if (device->driver->report_fixup)
656 device->driver->report_fixup(device, start, size);
657
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200658 device->rdesc = kmalloc(size, GFP_KERNEL);
659 if (device->rdesc == NULL)
660 return -ENOMEM;
Jiri Kosinadde58452006-12-08 18:40:44 +0100661 memcpy(device->rdesc, start, size);
662 device->rsize = size;
663
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200664 parser = vmalloc(sizeof(struct hid_parser));
665 if (!parser) {
666 ret = -ENOMEM;
667 goto err;
Jiri Kosinadde58452006-12-08 18:40:44 +0100668 }
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200669
Jiri Kosina47a80ed2007-03-12 14:55:12 +0100670 memset(parser, 0, sizeof(struct hid_parser));
Jiri Kosinadde58452006-12-08 18:40:44 +0100671 parser->device = device;
672
673 end = start + size;
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200674 ret = -EINVAL;
Jiri Kosinadde58452006-12-08 18:40:44 +0100675 while ((start = fetch_item(start, end, &item)) != NULL) {
676
677 if (item.format != HID_ITEM_FORMAT_SHORT) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200678 dbg_hid("unexpected long global item\n");
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200679 goto err;
Jiri Kosinadde58452006-12-08 18:40:44 +0100680 }
681
682 if (dispatch_type[item.type](parser, &item)) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200683 dbg_hid("item %u %u %u %u parsing failed\n",
Jiri Kosinadde58452006-12-08 18:40:44 +0100684 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200685 goto err;
Jiri Kosinadde58452006-12-08 18:40:44 +0100686 }
687
688 if (start == end) {
689 if (parser->collection_stack_ptr) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200690 dbg_hid("unbalanced collection at end of report description\n");
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200691 goto err;
Jiri Kosinadde58452006-12-08 18:40:44 +0100692 }
693 if (parser->local.delimiter_depth) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200694 dbg_hid("unbalanced delimiter at end of report description\n");
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200695 goto err;
Jiri Kosinadde58452006-12-08 18:40:44 +0100696 }
Jiri Kosina47a80ed2007-03-12 14:55:12 +0100697 vfree(parser);
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200698 return 0;
Jiri Kosinadde58452006-12-08 18:40:44 +0100699 }
700 }
701
Jiri Kosina58037eb2007-05-30 15:07:13 +0200702 dbg_hid("item fetching failed at offset %d\n", (int)(end - start));
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200703err:
Jiri Kosina47a80ed2007-03-12 14:55:12 +0100704 vfree(parser);
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200705 return ret;
Jiri Kosinadde58452006-12-08 18:40:44 +0100706}
Jiri Kosina229695e2006-12-08 18:40:53 +0100707EXPORT_SYMBOL_GPL(hid_parse_report);
Jiri Kosinadde58452006-12-08 18:40:44 +0100708
709/*
710 * Convert a signed n-bit integer to signed 32-bit integer. Common
711 * cases are done through the compiler, the screwed things has to be
712 * done by hand.
713 */
714
715static s32 snto32(__u32 value, unsigned n)
716{
717 switch (n) {
Jiri Slaby880d29f2008-06-18 23:55:41 +0200718 case 8: return ((__s8)value);
719 case 16: return ((__s16)value);
720 case 32: return ((__s32)value);
Jiri Kosinadde58452006-12-08 18:40:44 +0100721 }
722 return value & (1 << (n - 1)) ? value | (-1 << n) : value;
723}
724
725/*
726 * Convert a signed 32-bit integer to a signed n-bit integer.
727 */
728
729static u32 s32ton(__s32 value, unsigned n)
730{
731 s32 a = value >> (n - 1);
732 if (a && a != -1)
733 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
734 return value & ((1 << n) - 1);
735}
736
737/*
738 * Extract/implement a data field from/to a little endian report (bit array).
739 *
740 * Code sort-of follows HID spec:
741 * http://www.usb.org/developers/devclass_docs/HID1_11.pdf
742 *
743 * While the USB HID spec allows unlimited length bit fields in "report
744 * descriptors", most devices never use more than 16 bits.
745 * One model of UPS is claimed to report "LINEV" as a 32-bit field.
746 * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
747 */
748
749static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
750{
751 u64 x;
752
Jiri Kosinac4124c92007-11-30 11:12:58 +0100753 if (n > 32)
754 printk(KERN_WARNING "HID: extract() called with n (%d) > 32! (%s)\n",
755 n, current->comm);
Jiri Kosinadde58452006-12-08 18:40:44 +0100756
757 report += offset >> 3; /* adjust byte index */
Jiri Kosina229695e2006-12-08 18:40:53 +0100758 offset &= 7; /* now only need bit offset into one byte */
Harvey Harrisonc1050682008-04-29 01:03:31 -0700759 x = get_unaligned_le64(report);
Jiri Kosina229695e2006-12-08 18:40:53 +0100760 x = (x >> offset) & ((1ULL << n) - 1); /* extract bit field */
Jiri Kosinadde58452006-12-08 18:40:44 +0100761 return (u32) x;
762}
763
764/*
765 * "implement" : set bits in a little endian bit stream.
766 * Same concepts as "extract" (see comments above).
767 * The data mangled in the bit stream remains in little endian
768 * order the whole time. It make more sense to talk about
769 * endianness of register values by considering a register
770 * a "cached" copy of the little endiad bit stream.
771 */
772static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
773{
Harvey Harrison6f0168d2008-05-16 11:00:23 +0200774 u64 x;
Jiri Kosinadde58452006-12-08 18:40:44 +0100775 u64 m = (1ULL << n) - 1;
776
Jiri Kosinac4124c92007-11-30 11:12:58 +0100777 if (n > 32)
778 printk(KERN_WARNING "HID: implement() called with n (%d) > 32! (%s)\n",
779 n, current->comm);
Jiri Kosinadde58452006-12-08 18:40:44 +0100780
Jiri Kosinac4124c92007-11-30 11:12:58 +0100781 if (value > m)
782 printk(KERN_WARNING "HID: implement() called with too large value %d! (%s)\n",
783 value, current->comm);
Jiri Kosinadde58452006-12-08 18:40:44 +0100784 WARN_ON(value > m);
785 value &= m;
786
787 report += offset >> 3;
788 offset &= 7;
789
Harvey Harrison6f0168d2008-05-16 11:00:23 +0200790 x = get_unaligned_le64(report);
791 x &= ~(m << offset);
792 x |= ((u64)value) << offset;
793 put_unaligned_le64(x, report);
Jiri Kosinadde58452006-12-08 18:40:44 +0100794}
795
796/*
797 * Search an array for a value.
798 */
799
800static __inline__ int search(__s32 *array, __s32 value, unsigned n)
801{
802 while (n--) {
803 if (*array++ == value)
804 return 0;
805 }
806 return -1;
807}
808
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200809/**
810 * hid_match_report - check if driver's raw_event should be called
811 *
812 * @hid: hid device
813 * @report_type: type to match against
814 *
815 * compare hid->driver->report_table->report_type to report->type
816 */
817static int hid_match_report(struct hid_device *hid, struct hid_report *report)
Jiri Kosinadde58452006-12-08 18:40:44 +0100818{
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200819 const struct hid_report_id *id = hid->driver->report_table;
820
821 if (!id) /* NULL means all */
822 return 1;
823
824 for (; id->report_type != HID_TERMINATOR; id++)
825 if (id->report_type == HID_ANY_ID ||
826 id->report_type == report->type)
827 return 1;
828 return 0;
829}
830
831/**
832 * hid_match_usage - check if driver's event should be called
833 *
834 * @hid: hid device
835 * @usage: usage to match against
836 *
837 * compare hid->driver->usage_table->usage_{type,code} to
838 * usage->usage_{type,code}
839 */
840static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
841{
842 const struct hid_usage_id *id = hid->driver->usage_table;
843
844 if (!id) /* NULL means all */
845 return 1;
846
847 for (; id->usage_type != HID_ANY_ID - 1; id++)
848 if ((id->usage_hid == HID_ANY_ID ||
849 id->usage_hid == usage->hid) &&
850 (id->usage_type == HID_ANY_ID ||
851 id->usage_type == usage->type) &&
852 (id->usage_code == HID_ANY_ID ||
853 id->usage_code == usage->code))
854 return 1;
855 return 0;
856}
857
858static void hid_process_event(struct hid_device *hid, struct hid_field *field,
859 struct hid_usage *usage, __s32 value, int interrupt)
860{
861 struct hid_driver *hdrv = hid->driver;
862 int ret;
863
Jiri Kosinadde58452006-12-08 18:40:44 +0100864 hid_dump_input(usage, value);
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200865
866 if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
867 ret = hdrv->event(hid, field, usage, value);
868 if (ret != 0) {
869 if (ret < 0)
870 dbg_hid("%s's event failed with %d\n",
871 hdrv->name, ret);
872 return;
873 }
874 }
875
Jiri Kosinadde58452006-12-08 18:40:44 +0100876 if (hid->claimed & HID_CLAIMED_INPUT)
877 hidinput_hid_event(hid, field, usage, value);
Jiri Kosinaaa938f72006-12-08 18:41:10 +0100878 if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
879 hid->hiddev_hid_event(hid, field, usage, value);
Jiri Kosinadde58452006-12-08 18:40:44 +0100880}
881
882/*
883 * Analyse a received field, and fetch the data from it. The field
884 * content is stored for next report processing (we do differential
885 * reporting to the layer).
886 */
887
Adrian Bunkabdff0f2008-03-31 01:53:56 +0200888static void hid_input_field(struct hid_device *hid, struct hid_field *field,
889 __u8 *data, int interrupt)
Jiri Kosinadde58452006-12-08 18:40:44 +0100890{
891 unsigned n;
892 unsigned count = field->report_count;
893 unsigned offset = field->report_offset;
894 unsigned size = field->report_size;
895 __s32 min = field->logical_minimum;
896 __s32 max = field->logical_maximum;
897 __s32 *value;
898
899 if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC)))
900 return;
901
902 for (n = 0; n < count; n++) {
903
904 value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
905 extract(data, offset + n * size, size);
906
907 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
908 && value[n] >= min && value[n] <= max
909 && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
910 goto exit;
911 }
912
913 for (n = 0; n < count; n++) {
914
915 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
916 hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
917 continue;
918 }
919
920 if (field->value[n] >= min && field->value[n] <= max
921 && field->usage[field->value[n] - min].hid
922 && search(value, field->value[n], count))
923 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
924
925 if (value[n] >= min && value[n] <= max
926 && field->usage[value[n] - min].hid
927 && search(field->value, value[n], count))
928 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
929 }
930
931 memcpy(field->value, value, count * sizeof(__s32));
932exit:
933 kfree(value);
934}
Jiri Kosinadde58452006-12-08 18:40:44 +0100935
936/*
937 * Output the field into the report.
938 */
939
940static void hid_output_field(struct hid_field *field, __u8 *data)
941{
942 unsigned count = field->report_count;
943 unsigned offset = field->report_offset;
944 unsigned size = field->report_size;
Simon Budig46386b52007-03-12 13:52:04 +0100945 unsigned bitsused = offset + count * size;
Jiri Kosinadde58452006-12-08 18:40:44 +0100946 unsigned n;
947
Simon Budig46386b52007-03-12 13:52:04 +0100948 /* make sure the unused bits in the last byte are zeros */
949 if (count > 0 && size > 0 && (bitsused % 8) != 0)
950 data[(bitsused-1)/8] &= (1 << (bitsused % 8)) - 1;
951
Jiri Kosinadde58452006-12-08 18:40:44 +0100952 for (n = 0; n < count; n++) {
953 if (field->logical_minimum < 0) /* signed values */
954 implement(data, offset + n * size, size, s32ton(field->value[n], size));
955 else /* unsigned values */
956 implement(data, offset + n * size, size, field->value[n]);
957 }
958}
959
960/*
961 * Create a report.
962 */
963
Jiri Kosina229695e2006-12-08 18:40:53 +0100964void hid_output_report(struct hid_report *report, __u8 *data)
Jiri Kosinadde58452006-12-08 18:40:44 +0100965{
966 unsigned n;
967
968 if (report->id > 0)
969 *data++ = report->id;
970
971 for (n = 0; n < report->maxfield; n++)
972 hid_output_field(report->field[n], data);
973}
Jiri Kosina229695e2006-12-08 18:40:53 +0100974EXPORT_SYMBOL_GPL(hid_output_report);
Jiri Kosinadde58452006-12-08 18:40:44 +0100975
976/*
977 * Set a field value. The report this field belongs to has to be
978 * created and transferred to the device, to set this value in the
979 * device.
980 */
981
982int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
983{
984 unsigned size = field->report_size;
985
986 hid_dump_input(field->usage + offset, value);
987
988 if (offset >= field->report_count) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200989 dbg_hid("offset (%d) exceeds report_count (%d)\n", offset, field->report_count);
Jiri Kosinadde58452006-12-08 18:40:44 +0100990 hid_dump_field(field, 8);
991 return -1;
992 }
993 if (field->logical_minimum < 0) {
994 if (value != snto32(s32ton(value, size), size)) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200995 dbg_hid("value %d is out of range\n", value);
Jiri Kosinadde58452006-12-08 18:40:44 +0100996 return -1;
997 }
998 }
999 field->value[offset] = value;
1000 return 0;
1001}
Jiri Kosina229695e2006-12-08 18:40:53 +01001002EXPORT_SYMBOL_GPL(hid_set_field);
Jiri Kosinadde58452006-12-08 18:40:44 +01001003
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001004static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1005 const u8 *data)
1006{
1007 struct hid_report *report;
1008 unsigned int n = 0; /* Normally report number is 0 */
1009
1010 /* Device uses numbered reports, data[0] is report number */
1011 if (report_enum->numbered)
1012 n = *data;
1013
1014 report = report_enum->report_id_hash[n];
1015 if (report == NULL)
1016 dbg_hid("undefined report_id %u received\n", n);
1017
1018 return report;
1019}
1020
1021void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1022 int interrupt)
Jiri Kosinaaa8de2f2006-12-08 18:41:17 +01001023{
1024 struct hid_report_enum *report_enum = hid->report_enum + type;
1025 struct hid_report *report;
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001026 unsigned int a;
1027 int rsize, csize = size;
1028 u8 *cdata = data;
Jiri Kosinaaa8de2f2006-12-08 18:41:17 +01001029
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001030 report = hid_get_report(report_enum, data);
1031 if (!report)
1032 return;
Jiri Kosinaaa8de2f2006-12-08 18:41:17 +01001033
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001034 if (report_enum->numbered) {
1035 cdata++;
1036 csize--;
Jiri Kosinaaa8de2f2006-12-08 18:41:17 +01001037 }
1038
1039 rsize = ((report->size - 1) >> 3) + 1;
1040
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001041 if (csize < rsize) {
1042 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1043 csize, rsize);
1044 memset(cdata + csize, 0, rsize - csize);
Jiri Kosinaaa8de2f2006-12-08 18:41:17 +01001045 }
1046
1047 if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1048 hid->hiddev_report_event(hid, report);
Jiri Kosinab54ec3c2008-03-28 14:11:22 +01001049 if (hid->claimed & HID_CLAIMED_HIDRAW) {
1050 /* numbered reports need to be passed with the report num */
1051 if (report_enum->numbered)
1052 hidraw_report_event(hid, data - 1, size + 1);
1053 else
1054 hidraw_report_event(hid, data, size);
1055 }
Jiri Kosinaaa8de2f2006-12-08 18:41:17 +01001056
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001057 for (a = 0; a < report->maxfield; a++)
1058 hid_input_field(hid, report->field[a], cdata, interrupt);
Jiri Kosinaaa8de2f2006-12-08 18:41:17 +01001059
1060 if (hid->claimed & HID_CLAIMED_INPUT)
1061 hidinput_report_event(hid, report);
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001062}
1063EXPORT_SYMBOL_GPL(hid_report_raw_event);
1064
1065/**
1066 * hid_input_report - report data from lower layer (usb, bt...)
1067 *
1068 * @hid: hid device
1069 * @type: HID report type (HID_*_REPORT)
1070 * @data: report contents
1071 * @size: size of data parameter
1072 * @interrupt: called from atomic?
1073 *
1074 * This is data entry for lower layers.
1075 */
1076int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1077{
1078 struct hid_report_enum *report_enum = hid->report_enum + type;
1079 struct hid_driver *hdrv = hid->driver;
1080 struct hid_report *report;
1081 unsigned int i;
1082 int ret;
1083
1084 if (!hid || !hid->driver)
1085 return -ENODEV;
1086
1087 if (!size) {
1088 dbg_hid("empty report\n");
1089 return -1;
1090 }
1091
1092 dbg_hid("report (size %u) (%snumbered)\n", size, report_enum->numbered ? "" : "un");
1093
1094 report = hid_get_report(report_enum, data);
1095 if (!report)
1096 return -1;
1097
1098 /* dump the report */
1099 dbg_hid("report %d (size %u) = ", report->id, size);
1100 for (i = 0; i < size; i++)
1101 dbg_hid_line(" %02x", data[i]);
1102 dbg_hid_line("\n");
1103
1104 if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1105 ret = hdrv->raw_event(hid, report, data, size);
1106 if (ret != 0)
1107 return ret < 0 ? ret : 0;
1108 }
1109
1110 hid_report_raw_event(hid, type, data, size, interrupt);
Jiri Kosinaaa8de2f2006-12-08 18:41:17 +01001111
1112 return 0;
1113}
1114EXPORT_SYMBOL_GPL(hid_input_report);
1115
Jiri Slaby93c10132008-06-27 00:04:24 +02001116int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1117{
1118 static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1119 "Joystick", "Gamepad", "Keyboard", "Keypad",
1120 "Multi-Axis Controller"
1121 };
1122 const char *type, *bus;
1123 char buf[64];
1124 unsigned int i;
1125 int len;
1126
1127 if (hdev->bus != BUS_USB)
1128 connect_mask &= ~HID_CONNECT_HIDDEV;
1129
1130 if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1131 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1132 hdev->claimed |= HID_CLAIMED_INPUT;
1133 if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1134 !hdev->hiddev_connect(hdev,
1135 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1136 hdev->claimed |= HID_CLAIMED_HIDDEV;
1137 if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1138 hdev->claimed |= HID_CLAIMED_HIDRAW;
1139
1140 if (!hdev->claimed) {
1141 dev_err(&hdev->dev, "claimed by neither input, hiddev nor "
1142 "hidraw\n");
1143 return -ENODEV;
1144 }
1145
1146 if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1147 (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1148 hdev->ff_init(hdev);
1149
1150 len = 0;
1151 if (hdev->claimed & HID_CLAIMED_INPUT)
1152 len += sprintf(buf + len, "input");
1153 if (hdev->claimed & HID_CLAIMED_HIDDEV)
1154 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1155 hdev->minor);
1156 if (hdev->claimed & HID_CLAIMED_HIDRAW)
1157 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1158 ((struct hidraw *)hdev->hidraw)->minor);
1159
1160 type = "Device";
1161 for (i = 0; i < hdev->maxcollection; i++) {
1162 struct hid_collection *col = &hdev->collection[i];
1163 if (col->type == HID_COLLECTION_APPLICATION &&
1164 (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1165 (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1166 type = types[col->usage & 0xffff];
1167 break;
1168 }
1169 }
1170
1171 switch (hdev->bus) {
1172 case BUS_USB:
1173 bus = "USB";
1174 break;
1175 case BUS_BLUETOOTH:
1176 bus = "BLUETOOTH";
1177 break;
1178 default:
1179 bus = "<UNKNOWN>";
1180 }
1181
1182 dev_info(&hdev->dev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1183 buf, bus, hdev->version >> 8, hdev->version & 0xff,
1184 type, hdev->name, hdev->phys);
1185
1186 return 0;
1187}
1188EXPORT_SYMBOL_GPL(hid_connect);
1189
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001190static bool hid_match_one_id(struct hid_device *hdev,
1191 const struct hid_device_id *id)
1192{
1193 return id->bus == hdev->bus &&
1194 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1195 (id->product == HID_ANY_ID || id->product == hdev->product);
1196}
1197
1198static const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1199 const struct hid_device_id *id)
1200{
1201 for (; id->bus; id++)
1202 if (hid_match_one_id(hdev, id))
1203 return id;
1204
1205 return NULL;
1206}
1207
1208static const struct hid_device_id hid_blacklist[] = {
Jiri Slaby14a21cd2008-06-23 23:31:09 +02001209 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1210 { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
Jiri Slaby8c19a512008-06-18 23:36:49 +02001211 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1212 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1213 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1214 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1215 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1216 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1217 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1218 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1219 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1220 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1221 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1222 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1223 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1224 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1225 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1226 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1227 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1228 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1229 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1230 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1231 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1232 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1233 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1234 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1235 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1236 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1237 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1238 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1239 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1240 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
Jiri Slabyb5635b12008-06-24 23:24:57 +02001241 { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
Jiri Slaby3b239cd2008-06-24 20:42:25 +02001242 { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
Jiri Slabyfcfacfd2008-06-24 22:48:52 +02001243 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
Jiri Slaby0f221322008-06-23 22:54:08 +02001244 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1245 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1246 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
Jiri Slabyfea6f182008-06-26 22:25:33 +02001247 { HID_USB_DEVICE(USB_VENDOR_ID_DELL, USB_DEVICE_ID_DELL_W7658) },
Jiri Slaby1f243e32008-06-24 21:11:21 +02001248 { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
Jiri Slaby949f8fe2008-07-24 23:35:13 +02001249 { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
Jiri Slabyb5635b12008-06-24 23:24:57 +02001250 { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
Jiri Slaby5f22a792008-05-16 11:49:19 +02001251 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1252 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1253 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1254 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1255 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1256 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1257 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1258 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_KBD) },
1259 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1260 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1261 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_LX3) },
1262 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_V150) },
1263 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1264 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
Jiri Slaby78a849a682008-06-20 21:26:11 +02001265 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1266 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1267 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1268 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1269 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
Jiri Slaby3b8006e2008-06-25 00:07:50 +02001270 { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
Jiri Slaby1e762532008-06-24 23:46:21 +02001271 { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
Jiri Slaby980a3da2008-06-25 22:31:48 +02001272 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
Jiri Slabybd28ce02008-06-25 23:47:04 +02001273 { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
Jiri Slaby90231e72008-06-23 21:56:07 +02001274 { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
Jiri Slaby8c19a512008-06-18 23:36:49 +02001275
1276 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 0x030c) },
Jiri Slaby78a849a682008-06-20 21:26:11 +02001277 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001278 { }
1279};
1280
1281static int hid_bus_match(struct device *dev, struct device_driver *drv)
1282{
1283 struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1284 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1285
1286 if (!hid_match_id(hdev, hdrv->id_table))
1287 return 0;
1288
1289 /* generic wants all non-blacklisted */
1290 if (!strncmp(hdrv->name, "generic-", 8))
1291 return !hid_match_id(hdev, hid_blacklist);
1292
1293 return 1;
1294}
1295
1296static int hid_device_probe(struct device *dev)
1297{
1298 struct hid_driver *hdrv = container_of(dev->driver,
1299 struct hid_driver, driver);
1300 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1301 const struct hid_device_id *id;
1302 int ret = 0;
1303
1304 if (!hdev->driver) {
Jiri Slabyc500c972008-05-16 11:49:16 +02001305 id = hid_match_id(hdev, hdrv->id_table);
1306 if (id == NULL)
1307 return -ENODEV;
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001308
Jiri Slabyc500c972008-05-16 11:49:16 +02001309 hdev->driver = hdrv;
1310 if (hdrv->probe) {
1311 ret = hdrv->probe(hdev, id);
1312 } else { /* default probe */
1313 ret = hid_parse(hdev);
1314 if (!ret)
Jiri Slaby93c10132008-06-27 00:04:24 +02001315 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001316 }
Jiri Slabyc500c972008-05-16 11:49:16 +02001317 if (ret)
1318 hdev->driver = NULL;
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001319 }
1320 return ret;
1321}
1322
1323static int hid_device_remove(struct device *dev)
1324{
1325 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1326 struct hid_driver *hdrv = hdev->driver;
1327
1328 if (hdrv) {
1329 if (hdrv->remove)
1330 hdrv->remove(hdev);
Jiri Slabyc500c972008-05-16 11:49:16 +02001331 else /* default remove */
1332 hid_hw_stop(hdev);
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001333 hdev->driver = NULL;
1334 }
1335
1336 return 0;
1337}
1338
1339static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
1340{
1341 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1342
1343 if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
1344 hdev->bus, hdev->vendor, hdev->product))
1345 return -ENOMEM;
1346
1347 if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
1348 return -ENOMEM;
1349
1350 if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
1351 return -ENOMEM;
1352
1353 if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
1354 return -ENOMEM;
1355
1356 if (add_uevent_var(env, "MODALIAS=hid:b%04Xv%08Xp%08X",
1357 hdev->bus, hdev->vendor, hdev->product))
1358 return -ENOMEM;
1359
1360 return 0;
1361}
1362
1363static struct bus_type hid_bus_type = {
1364 .name = "hid",
1365 .match = hid_bus_match,
1366 .probe = hid_device_probe,
1367 .remove = hid_device_remove,
1368 .uevent = hid_uevent,
1369};
1370
Jiri Slabyd458a9d2008-05-16 11:49:20 +02001371static const struct hid_device_id hid_ignore_list[] = {
1372 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
1373 { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
1374 { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
1375 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
1376 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
1377 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
1378 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
1379 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
1380 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
1381 { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
1382 { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
1383 { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
1384 { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM)},
1385 { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
1386 { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
1387 { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
1388 { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
1389 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
1390 { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
1391 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
1392 { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
1393 { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
1394 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
1395 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
1396 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0003) },
1397 { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
1398 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
1399 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
1400 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
1401 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
1402 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
1403 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
1404 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
1405 { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
1406 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
1407 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
1408 { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
1409 { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
1410 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
1411 { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
1412 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
1413 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
1414 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
1415 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
1416 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
1417 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
1418 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
1419 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
1420 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
1421 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
1422 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
1423 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
1424 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
1425 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
1426 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
1427 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
1428 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
1429 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
1430 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
1431 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
1432 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
1433 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
1434 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
1435 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
1436 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
1437 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
1438 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
1439 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
1440 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
1441 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
1442 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
1443 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
1444 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
1445 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
1446 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
1447 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
1448 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
1449 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
1450 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
1451 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
1452 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
1453 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
1454 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
1455 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
1456 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
1457 { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
1458 { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
1459 { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
1460 { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
1461 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
1462 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
1463 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
1464 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
1465 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
1466 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
1467 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY1) },
1468 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
1469 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
1470 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
1471 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
1472 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
1473 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
1474 { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
1475 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
1476 { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
1477 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1478 { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1479 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
1480 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
1481 { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
1482 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
1483 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
1484 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
1485 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
1486 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
1487 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
1488 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
1489 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
1490 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
1491 { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
1492 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
1493 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
1494 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
1495 { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
1496 { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD) },
1497 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
1498 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
1499 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
1500 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
1501 { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
1502 { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
1503 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
1504 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
1505 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
1506 { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
1507 { }
1508};
1509
1510static bool hid_ignore(struct hid_device *hdev)
1511{
1512 switch (hdev->vendor) {
1513 case USB_VENDOR_ID_CODEMERCS:
1514 /* ignore all Code Mercenaries IOWarrior devices */
1515 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
1516 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
1517 return true;
1518 break;
1519 case USB_VENDOR_ID_LOGITECH:
1520 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
1521 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
1522 return true;
1523 break;
1524 }
1525
1526 return !!hid_match_id(hdev, hid_ignore_list);
1527}
1528
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001529int hid_add_device(struct hid_device *hdev)
1530{
1531 static atomic_t id = ATOMIC_INIT(0);
1532 int ret;
1533
1534 if (WARN_ON(hdev->status & HID_STAT_ADDED))
1535 return -EBUSY;
1536
Jiri Slabyd458a9d2008-05-16 11:49:20 +02001537 /* we need to kill them here, otherwise they will stay allocated to
1538 * wait for coming driver */
1539 if (hid_ignore(hdev))
1540 return -ENODEV;
1541
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001542 /* XXX hack, any other cleaner solution < 20 bus_id bytes? */
1543 sprintf(hdev->dev.bus_id, "%04X:%04X:%04X.%04X", hdev->bus,
1544 hdev->vendor, hdev->product, atomic_inc_return(&id));
1545
1546 ret = device_add(&hdev->dev);
1547 if (!ret)
1548 hdev->status |= HID_STAT_ADDED;
1549
1550 return ret;
1551}
1552EXPORT_SYMBOL_GPL(hid_add_device);
1553
1554/**
1555 * hid_allocate_device - allocate new hid device descriptor
1556 *
1557 * Allocate and initialize hid device, so that hid_destroy_device might be
1558 * used to free it.
1559 *
1560 * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
1561 * error value.
1562 */
1563struct hid_device *hid_allocate_device(void)
1564{
1565 struct hid_device *hdev;
1566 unsigned int i;
1567 int ret = -ENOMEM;
1568
1569 hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
1570 if (hdev == NULL)
1571 return ERR_PTR(ret);
1572
1573 device_initialize(&hdev->dev);
1574 hdev->dev.release = hid_device_release;
1575 hdev->dev.bus = &hid_bus_type;
1576
1577 hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
1578 sizeof(struct hid_collection), GFP_KERNEL);
1579 if (hdev->collection == NULL)
1580 goto err;
1581 hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
1582
1583 for (i = 0; i < HID_REPORT_TYPES; i++)
1584 INIT_LIST_HEAD(&hdev->report_enum[i].report_list);
1585
1586 return hdev;
1587err:
1588 put_device(&hdev->dev);
1589 return ERR_PTR(ret);
1590}
1591EXPORT_SYMBOL_GPL(hid_allocate_device);
1592
1593static void hid_remove_device(struct hid_device *hdev)
1594{
1595 if (hdev->status & HID_STAT_ADDED) {
1596 device_del(&hdev->dev);
1597 hdev->status &= ~HID_STAT_ADDED;
1598 }
1599}
1600
1601/**
1602 * hid_destroy_device - free previously allocated device
1603 *
1604 * @hdev: hid device
1605 *
1606 * If you allocate hid_device through hid_allocate_device, you should ever
1607 * free by this function.
1608 */
1609void hid_destroy_device(struct hid_device *hdev)
1610{
1611 hid_remove_device(hdev);
1612 put_device(&hdev->dev);
1613}
1614EXPORT_SYMBOL_GPL(hid_destroy_device);
1615
1616int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
1617 const char *mod_name)
1618{
1619 hdrv->driver.name = hdrv->name;
1620 hdrv->driver.bus = &hid_bus_type;
1621 hdrv->driver.owner = owner;
1622 hdrv->driver.mod_name = mod_name;
1623
1624 return driver_register(&hdrv->driver);
1625}
1626EXPORT_SYMBOL_GPL(__hid_register_driver);
1627
1628void hid_unregister_driver(struct hid_driver *hdrv)
1629{
1630 driver_unregister(&hdrv->driver);
1631}
1632EXPORT_SYMBOL_GPL(hid_unregister_driver);
1633
Jiri Slaby02ae9a12008-05-16 11:49:22 +02001634#ifdef CONFIG_HID_COMPAT
1635static void hid_compat_load(struct work_struct *ws)
1636{
1637 request_module("hid-dummy");
1638}
1639static DECLARE_WORK(hid_compat_work, hid_compat_load);
1640#endif
1641
Jiri Kosina86166b72007-05-14 09:57:40 +02001642static int __init hid_init(void)
1643{
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001644 int ret;
1645
1646 ret = bus_register(&hid_bus_type);
1647 if (ret) {
1648 printk(KERN_ERR "HID: can't register hid bus\n");
1649 goto err;
1650 }
1651
1652 ret = hidraw_init();
1653 if (ret)
1654 goto err_bus;
1655
Jiri Slaby02ae9a12008-05-16 11:49:22 +02001656#ifdef CONFIG_HID_COMPAT
1657 schedule_work(&hid_compat_work);
1658#endif
1659
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001660 return 0;
1661err_bus:
1662 bus_unregister(&hid_bus_type);
1663err:
1664 return ret;
Jiri Kosina86166b72007-05-14 09:57:40 +02001665}
1666
1667static void __exit hid_exit(void)
1668{
1669 hidraw_exit();
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001670 bus_unregister(&hid_bus_type);
Jiri Kosina86166b72007-05-14 09:57:40 +02001671}
1672
1673module_init(hid_init);
1674module_exit(hid_exit);
1675
Jiri Kosinaaa938f72006-12-08 18:41:10 +01001676MODULE_LICENSE(DRIVER_LICENSE);
1677