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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Copyright (c) 1999 Andreas Gal
3 * Copyright (c) 2000-2001 Vojtech Pavlik
Jiri Kosinab55fd232007-02-21 19:27:49 +01004 * Copyright (c) 2006-2007 Jiri Kosina
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07006/*
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * Should you need to contact me, the author, you can do so either by
22 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
23 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
24 */
David Howells607ca462012-10-13 10:46:48 +010025#ifndef __HID_H
26#define __HID_H
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
Jiri Kosina57d292b2007-10-15 15:17:41 +020028
29#include <linux/types.h>
30#include <linux/slab.h>
31#include <linux/list.h>
Jiri Slabye8c84f92008-05-19 15:50:01 +020032#include <linux/mod_devicetable.h> /* hid_device_id */
Jiri Kosina57d292b2007-10-15 15:17:41 +020033#include <linux/timer.h>
34#include <linux/workqueue.h>
35#include <linux/input.h>
David Herrmann4ea54542011-08-10 14:02:07 +020036#include <linux/semaphore.h>
Jeremy Fitzhardinge4f5ca832011-11-23 00:49:14 -080037#include <linux/power_supply.h>
David Howells607ca462012-10-13 10:46:48 +010038#include <uapi/linux/hid.h>
Jiri Kosina57d292b2007-10-15 15:17:41 +020039
Linus Torvalds1da177e2005-04-16 15:20:36 -070040/*
41 * We parse each description item into this structure. Short items data
42 * values are expanded to 32-bit signed int, long items contain a pointer
43 * into the data area.
44 */
45
46struct hid_item {
47 unsigned format;
48 __u8 size;
49 __u8 type;
50 __u8 tag;
51 union {
52 __u8 u8;
53 __s8 s8;
54 __u16 u16;
55 __s16 s16;
56 __u32 u32;
57 __s32 s32;
58 __u8 *longdata;
59 } data;
60};
61
62/*
63 * HID report item format
64 */
65
66#define HID_ITEM_FORMAT_SHORT 0
67#define HID_ITEM_FORMAT_LONG 1
68
69/*
70 * Special tag indicating long items
71 */
72
73#define HID_ITEM_TAG_LONG 15
74
75/*
76 * HID report descriptor item type (prefix bit 2,3)
77 */
78
79#define HID_ITEM_TYPE_MAIN 0
80#define HID_ITEM_TYPE_GLOBAL 1
81#define HID_ITEM_TYPE_LOCAL 2
82#define HID_ITEM_TYPE_RESERVED 3
83
84/*
85 * HID report descriptor main item tags
86 */
87
88#define HID_MAIN_ITEM_TAG_INPUT 8
89#define HID_MAIN_ITEM_TAG_OUTPUT 9
90#define HID_MAIN_ITEM_TAG_FEATURE 11
91#define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10
92#define HID_MAIN_ITEM_TAG_END_COLLECTION 12
93
94/*
95 * HID report descriptor main item contents
96 */
97
98#define HID_MAIN_ITEM_CONSTANT 0x001
99#define HID_MAIN_ITEM_VARIABLE 0x002
100#define HID_MAIN_ITEM_RELATIVE 0x004
Dmitry Torokhov05f091ab2005-05-29 02:29:01 -0500101#define HID_MAIN_ITEM_WRAP 0x008
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102#define HID_MAIN_ITEM_NONLINEAR 0x010
103#define HID_MAIN_ITEM_NO_PREFERRED 0x020
104#define HID_MAIN_ITEM_NULL_STATE 0x040
105#define HID_MAIN_ITEM_VOLATILE 0x080
106#define HID_MAIN_ITEM_BUFFERED_BYTE 0x100
107
108/*
109 * HID report descriptor collection item types
110 */
111
112#define HID_COLLECTION_PHYSICAL 0
113#define HID_COLLECTION_APPLICATION 1
114#define HID_COLLECTION_LOGICAL 2
115
116/*
117 * HID report descriptor global item tags
118 */
119
120#define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0
121#define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1
122#define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2
123#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3
124#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4
125#define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5
126#define HID_GLOBAL_ITEM_TAG_UNIT 6
127#define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7
128#define HID_GLOBAL_ITEM_TAG_REPORT_ID 8
129#define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9
130#define HID_GLOBAL_ITEM_TAG_PUSH 10
131#define HID_GLOBAL_ITEM_TAG_POP 11
132
133/*
134 * HID report descriptor local item tags
135 */
136
137#define HID_LOCAL_ITEM_TAG_USAGE 0
138#define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1
139#define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2
140#define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3
141#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4
142#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5
143#define HID_LOCAL_ITEM_TAG_STRING_INDEX 7
144#define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8
145#define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9
146#define HID_LOCAL_ITEM_TAG_DELIMITER 10
147
148/*
149 * HID usage tables
150 */
151
152#define HID_USAGE_PAGE 0xffff0000
153
154#define HID_UP_UNDEFINED 0x00000000
Dmitry Torokhov05f091ab2005-05-29 02:29:01 -0500155#define HID_UP_GENDESK 0x00010000
Vojtech Pavlik0aebfda2005-09-05 00:07:59 -0500156#define HID_UP_SIMULATION 0x00020000
Jeremy Fitzhardinge4f5ca832011-11-23 00:49:14 -0800157#define HID_UP_GENDEVCTRLS 0x00060000
Dmitry Torokhov05f091ab2005-05-29 02:29:01 -0500158#define HID_UP_KEYBOARD 0x00070000
159#define HID_UP_LED 0x00080000
160#define HID_UP_BUTTON 0x00090000
161#define HID_UP_ORDINAL 0x000a0000
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162#define HID_UP_CONSUMER 0x000c0000
Dmitry Torokhov05f091ab2005-05-29 02:29:01 -0500163#define HID_UP_DIGITIZER 0x000d0000
164#define HID_UP_PID 0x000f0000
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165#define HID_UP_HPVENDOR 0xff7f0000
Keng-Yu Lin929578a2012-07-06 18:06:11 +0800166#define HID_UP_HPVENDOR2 0xff010000
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167#define HID_UP_MSVENDOR 0xff000000
Stelian Pope875ce32005-09-05 01:57:33 -0500168#define HID_UP_CUSTOM 0x00ff0000
169#define HID_UP_LOGIVENDOR 0xffbc0000
Jamie Lentinf3d4ff02014-07-23 23:30:48 +0100170#define HID_UP_LNVENDOR 0xffa00000
Alexander Holler83499b52012-12-09 12:44:30 +0100171#define HID_UP_SENSOR 0x00200000
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172
173#define HID_USAGE 0x0000ffff
174
175#define HID_GD_POINTER 0x00010001
176#define HID_GD_MOUSE 0x00010002
177#define HID_GD_JOYSTICK 0x00010004
178#define HID_GD_GAMEPAD 0x00010005
179#define HID_GD_KEYBOARD 0x00010006
180#define HID_GD_KEYPAD 0x00010007
181#define HID_GD_MULTIAXIS 0x00010008
182#define HID_GD_X 0x00010030
183#define HID_GD_Y 0x00010031
184#define HID_GD_Z 0x00010032
185#define HID_GD_RX 0x00010033
186#define HID_GD_RY 0x00010034
187#define HID_GD_RZ 0x00010035
188#define HID_GD_SLIDER 0x00010036
189#define HID_GD_DIAL 0x00010037
190#define HID_GD_WHEEL 0x00010038
191#define HID_GD_HATSWITCH 0x00010039
192#define HID_GD_BUFFER 0x0001003a
193#define HID_GD_BYTECOUNT 0x0001003b
194#define HID_GD_MOTION 0x0001003c
195#define HID_GD_START 0x0001003d
196#define HID_GD_SELECT 0x0001003e
197#define HID_GD_VX 0x00010040
198#define HID_GD_VY 0x00010041
199#define HID_GD_VZ 0x00010042
200#define HID_GD_VBRX 0x00010043
201#define HID_GD_VBRY 0x00010044
202#define HID_GD_VBRZ 0x00010045
203#define HID_GD_VNO 0x00010046
204#define HID_GD_FEATURE 0x00010047
Benjamin Tissoires6aef7042014-02-28 11:41:25 -0500205#define HID_GD_SYSTEM_CONTROL 0x00010080
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206#define HID_GD_UP 0x00010090
207#define HID_GD_DOWN 0x00010091
208#define HID_GD_RIGHT 0x00010092
209#define HID_GD_LEFT 0x00010093
210
Jeremy Fitzhardinge4f5ca832011-11-23 00:49:14 -0800211#define HID_DC_BATTERYSTRENGTH 0x00060020
212
Benjamin Tissoires6aef7042014-02-28 11:41:25 -0500213#define HID_CP_CONSUMER_CONTROL 0x000c0001
214
Stephane Chatty89f536c2009-05-20 15:41:24 +0200215#define HID_DG_DIGITIZER 0x000d0001
216#define HID_DG_PEN 0x000d0002
217#define HID_DG_LIGHTPEN 0x000d0003
218#define HID_DG_TOUCHSCREEN 0x000d0004
219#define HID_DG_TOUCHPAD 0x000d0005
220#define HID_DG_STYLUS 0x000d0020
221#define HID_DG_PUCK 0x000d0021
222#define HID_DG_FINGER 0x000d0022
223#define HID_DG_TIPPRESSURE 0x000d0030
224#define HID_DG_BARRELPRESSURE 0x000d0031
225#define HID_DG_INRANGE 0x000d0032
226#define HID_DG_TOUCH 0x000d0033
227#define HID_DG_UNTOUCH 0x000d0034
228#define HID_DG_TAP 0x000d0035
229#define HID_DG_TABLETFUNCTIONKEY 0x000d0039
230#define HID_DG_PROGRAMCHANGEKEY 0x000d003a
231#define HID_DG_INVERT 0x000d003c
232#define HID_DG_TIPSWITCH 0x000d0042
233#define HID_DG_TIPSWITCH2 0x000d0043
234#define HID_DG_BARRELSWITCH 0x000d0044
235#define HID_DG_ERASER 0x000d0045
236#define HID_DG_TABLETPICK 0x000d0046
JD Cole1a3f83f2014-10-31 17:34:42 -0700237
238#define HID_CP_CONSUMERCONTROL 0x000c0001
239
Stephane Chatty89f536c2009-05-20 15:41:24 +0200240#define HID_DG_CONFIDENCE 0x000d0047
241#define HID_DG_WIDTH 0x000d0048
242#define HID_DG_HEIGHT 0x000d0049
243#define HID_DG_CONTACTID 0x000d0051
244#define HID_DG_INPUTMODE 0x000d0052
245#define HID_DG_DEVICEINDEX 0x000d0053
246#define HID_DG_CONTACTCOUNT 0x000d0054
247#define HID_DG_CONTACTMAX 0x000d0055
Ping Cheng368c9662014-06-02 17:19:52 -0700248#define HID_DG_BARRELSWITCH2 0x000d005a
249#define HID_DG_TOOLSERIALNUMBER 0x000d005b
Stephane Chatty89f536c2009-05-20 15:41:24 +0200250
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251/*
252 * HID report types --- Ouch! HID spec says 1 2 3!
253 */
254
255#define HID_INPUT_REPORT 0
256#define HID_OUTPUT_REPORT 1
257#define HID_FEATURE_REPORT 2
258
David Herrmann39054a52013-09-02 14:00:05 +0200259#define HID_REPORT_TYPES 3
260
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261/*
Jiri Slaby93c10132008-06-27 00:04:24 +0200262 * HID connect requests
263 */
264
265#define HID_CONNECT_HIDINPUT 0x01
266#define HID_CONNECT_HIDINPUT_FORCE 0x02
267#define HID_CONNECT_HIDRAW 0x04
268#define HID_CONNECT_HIDDEV 0x08
269#define HID_CONNECT_HIDDEV_FORCE 0x10
270#define HID_CONNECT_FF 0x20
Benjamin Tissoires7704ac92014-09-23 12:08:08 -0400271#define HID_CONNECT_DRIVER 0x40
Jiri Slaby93c10132008-06-27 00:04:24 +0200272#define HID_CONNECT_DEFAULT (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \
273 HID_CONNECT_HIDDEV|HID_CONNECT_FF)
274
275/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 * HID device quirks.
277 */
278
Paul Walmsley876b9272007-04-19 14:56:12 +0200279/*
280 * Increase this if you need to configure more HID quirks at module load time
281 */
282#define MAX_USBHID_BOOT_QUIRKS 4
283
Michael Hanselmanneab9edd2006-01-14 10:08:06 -0500284#define HID_QUIRK_INVERT 0x00000001
285#define HID_QUIRK_NOTOUCH 0x00000002
Jiri Kosina6f4303f2009-01-29 00:15:51 +0100286#define HID_QUIRK_IGNORE 0x00000004
Michael Hanselmanneab9edd2006-01-14 10:08:06 -0500287#define HID_QUIRK_NOGET 0x00000008
Bastien Nocerab5e5a372010-04-16 17:19:50 +0100288#define HID_QUIRK_HIDDEV_FORCE 0x00000010
Michael Hanselmanneab9edd2006-01-14 10:08:06 -0500289#define HID_QUIRK_BADPAD 0x00000020
290#define HID_QUIRK_MULTI_INPUT 0x00000040
Daniel Mack3a343ee2010-07-12 19:28:27 +0200291#define HID_QUIRK_HIDINPUT_FORCE 0x00000080
Benjamin Tissoires4f22dec2013-03-22 18:38:28 +0100292#define HID_QUIRK_NO_EMPTY_INPUT 0x00000100
Benjamin Tissoires595e9272013-08-22 14:51:09 +0200293#define HID_QUIRK_NO_INIT_INPUT_REPORTS 0x00000200
Johan Hovold0b750b32014-09-05 18:08:47 +0200294#define HID_QUIRK_ALWAYS_POLL 0x00000400
Jiri Kosinaea9a4a82007-06-19 14:09:14 +0200295#define HID_QUIRK_SKIP_OUTPUT_REPORTS 0x00010000
Benjamin Tissoirese534a932014-03-08 22:52:42 -0500296#define HID_QUIRK_SKIP_OUTPUT_REPORT_ID 0x00020000
297#define HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP 0x00040000
Pekka Sarnilaf345c372008-03-06 13:23:14 +0100298#define HID_QUIRK_FULLSPEED_INTERVAL 0x10000000
Jiri Kosina5b915d92009-11-05 14:08:03 +0100299#define HID_QUIRK_NO_INIT_REPORTS 0x20000000
Bastien Nocerab5e5a372010-04-16 17:19:50 +0100300#define HID_QUIRK_NO_IGNORE 0x40000000
Henrik Rydberg24750f32010-08-24 10:54:44 +0200301#define HID_QUIRK_NO_INPUT_SYNC 0x80000000
Jiri Kosinaea9a4a82007-06-19 14:09:14 +0200302
303/*
Henrik Rydberg734c6602012-04-23 12:07:03 +0200304 * HID device groups
Benjamin Tissoiresba391e52014-05-21 11:15:56 -0400305 *
306 * Note: HID_GROUP_ANY is declared in linux/mod_devicetable.h
307 * and has a value of 0x0000
Henrik Rydberg734c6602012-04-23 12:07:03 +0200308 */
309#define HID_GROUP_GENERIC 0x0001
Henrik Rydberg4fa3a582012-05-01 08:40:01 +0200310#define HID_GROUP_MULTITOUCH 0x0002
Alexander Holler83499b52012-12-09 12:44:30 +0100311#define HID_GROUP_SENSOR_HUB 0x0003
Benjamin Tissoiresf961bd32013-08-22 14:51:08 +0200312#define HID_GROUP_MULTITOUCH_WIN_8 0x0004
Henrik Rydberg734c6602012-04-23 12:07:03 +0200313
314/*
Benjamin Tissoiresba391e52014-05-21 11:15:56 -0400315 * Vendor specific HID device groups
316 */
317#define HID_GROUP_RMI 0x0100
318
319/*
Benjamin Tissoires29b47392014-07-24 12:52:23 -0700320 * Vendor specific HID device groups
321 */
322#define HID_GROUP_WACOM 0x0101
323
324/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325 * This is the global environment of the parser. This information is
326 * persistent for main-items. The global environment can be saved and
327 * restored with PUSH/POP statements.
328 */
329
330struct hid_global {
331 unsigned usage_page;
332 __s32 logical_minimum;
333 __s32 logical_maximum;
334 __s32 physical_minimum;
335 __s32 physical_maximum;
336 __s32 unit_exponent;
337 unsigned unit;
338 unsigned report_id;
339 unsigned report_size;
340 unsigned report_count;
341};
342
343/*
344 * This is the local environment. It is persistent up the next main-item.
345 */
346
Jiri Kosina5f1ab742008-03-14 16:53:07 +0100347#define HID_MAX_USAGES 12288
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348#define HID_DEFAULT_NUM_COLLECTIONS 16
349
350struct hid_local {
351 unsigned usage[HID_MAX_USAGES]; /* usage array */
352 unsigned collection_index[HID_MAX_USAGES]; /* collection index array */
353 unsigned usage_index;
354 unsigned usage_minimum;
355 unsigned delimiter_depth;
356 unsigned delimiter_branch;
357};
358
359/*
360 * This is the collection stack. We climb up the stack to determine
361 * application and function of each field.
362 */
363
364struct hid_collection {
365 unsigned type;
366 unsigned usage;
367 unsigned level;
368};
369
370struct hid_usage {
371 unsigned hid; /* hid usage code */
372 unsigned collection_index; /* index into collection array */
Benjamin Tissoiresf262d1f2012-11-14 16:59:16 +0100373 unsigned usage_index; /* index into usage array */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 /* hidinput data */
375 __u16 code; /* input driver code */
376 __u8 type; /* input driver type */
377 __s8 hat_min; /* hat switch fun */
378 __s8 hat_max; /* ditto */
379 __s8 hat_dir; /* ditto */
380};
381
382struct hid_input;
383
384struct hid_field {
385 unsigned physical; /* physical usage for this field */
386 unsigned logical; /* logical usage for this field */
387 unsigned application; /* application usage for this field */
388 struct hid_usage *usage; /* usage table for this function */
389 unsigned maxusage; /* maximum usage index */
390 unsigned flags; /* main-item flags (i.e. volatile,array,constant) */
391 unsigned report_offset; /* bit offset in the report */
392 unsigned report_size; /* size of this field in the report */
393 unsigned report_count; /* number of this field in the report */
394 unsigned report_type; /* (input,output,feature) */
395 __s32 *value; /* last known value(s) */
396 __s32 logical_minimum;
397 __s32 logical_maximum;
398 __s32 physical_minimum;
399 __s32 physical_maximum;
400 __s32 unit_exponent;
401 unsigned unit;
402 struct hid_report *report; /* associated report */
403 unsigned index; /* index into report->field[] */
404 /* hidinput data */
405 struct hid_input *hidinput; /* associated input structure */
406 __u16 dpad; /* dpad input code */
407};
408
Henrik Rydberg7e55bde2012-09-03 12:28:59 +0200409#define HID_MAX_FIELDS 256
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410
411struct hid_report {
412 struct list_head list;
413 unsigned id; /* id of this report */
414 unsigned type; /* report type */
415 struct hid_field *field[HID_MAX_FIELDS]; /* fields of the report */
416 unsigned maxfield; /* maximum valid field index */
417 unsigned size; /* size of the report (bits) */
418 struct hid_device *device; /* associated device */
419};
420
Kees Cook43622022013-08-28 22:29:55 +0200421#define HID_MAX_IDS 256
422
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423struct hid_report_enum {
424 unsigned numbered;
425 struct list_head report_list;
Kees Cook43622022013-08-28 22:29:55 +0200426 struct hid_report *report_id_hash[HID_MAX_IDS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427};
428
Michael Haboustakbf0964d2005-09-05 00:12:01 -0500429#define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */
430#define HID_MAX_BUFFER_SIZE 4096 /* 4kb */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431#define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */
432#define HID_OUTPUT_FIFO_SIZE 64
433
434struct hid_control_fifo {
435 unsigned char dir;
436 struct hid_report *report;
Anssi Hannulaf129ea62008-10-04 14:44:06 +0200437 char *raw_report;
438};
439
440struct hid_output_fifo {
441 struct hid_report *report;
442 char *raw_report;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443};
444
445#define HID_CLAIMED_INPUT 1
446#define HID_CLAIMED_HIDDEV 2
Jiri Kosina86166b72007-05-14 09:57:40 +0200447#define HID_CLAIMED_HIDRAW 4
Benjamin Tissoires7704ac92014-09-23 12:08:08 -0400448#define HID_CLAIMED_DRIVER 8
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200450#define HID_STAT_ADDED 1
Jiri Slabyc500c972008-05-16 11:49:16 +0200451#define HID_STAT_PARSED 2
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200452
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453struct hid_input {
454 struct list_head list;
455 struct hid_report *report;
Dmitry Torokhovc5b7c7c2005-09-15 02:01:47 -0500456 struct input_dev *input;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457};
458
Jiri Slabya73a6372008-10-22 14:45:11 +0200459enum hid_type {
460 HID_TYPE_OTHER = 0,
Tomoki Sekiyama6dc14182011-05-23 15:45:44 -0700461 HID_TYPE_USBMOUSE,
462 HID_TYPE_USBNONE
Jiri Slabya73a6372008-10-22 14:45:11 +0200463};
464
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200465struct hid_driver;
Jiri Slabyc500c972008-05-16 11:49:16 +0200466struct hid_ll_driver;
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200467
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468struct hid_device { /* device report descriptor */
Henrik Rydberga7197c2e2012-04-22 14:21:40 +0200469 __u8 *dev_rdesc;
470 unsigned dev_rsize;
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200471 __u8 *rdesc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 unsigned rsize;
473 struct hid_collection *collection; /* List of HID collections */
474 unsigned collection_size; /* Number of allocated hid_collections */
475 unsigned maxcollection; /* Number of parsed collections */
476 unsigned maxapplication; /* Number of applications */
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200477 __u16 bus; /* BUS ID */
Henrik Rydberg4d53b802012-04-23 12:07:02 +0200478 __u16 group; /* Report group */
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200479 __u32 vendor; /* Vendor ID */
480 __u32 product; /* Product ID */
481 __u32 version; /* HID version */
Jiri Slabya73a6372008-10-22 14:45:11 +0200482 enum hid_type type; /* device type (mouse, kbd, ...) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 unsigned country; /* HID country */
484 struct hid_report_enum report_enum[HID_REPORT_TYPES];
David Herrmann50c9d752013-07-15 19:10:12 +0200485 struct work_struct led_work; /* delayed LED worker */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486
Andrew de los Reyesc849a612013-02-18 09:20:21 -0800487 struct semaphore driver_lock; /* protects the current driver, except during input */
488 struct semaphore driver_input_lock; /* protects the current driver */
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200489 struct device dev; /* device */
490 struct hid_driver *driver;
Jiri Slabyc500c972008-05-16 11:49:16 +0200491 struct hid_ll_driver *ll_driver;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492
Jeremy Fitzhardinge4f5ca832011-11-23 00:49:14 -0800493#ifdef CONFIG_HID_BATTERY_STRENGTH
494 /*
495 * Power supply information for HID devices which report
496 * battery strength. power_supply is registered iff
497 * battery.name is non-NULL.
498 */
499 struct power_supply battery;
500 __s32 battery_min;
501 __s32 battery_max;
Jeremy Fitzhardingefb8ac91b2011-12-02 11:18:45 -0800502 __s32 battery_report_type;
Daniel Nicolettic5a92aa2011-12-02 03:52:22 -0200503 __s32 battery_report_id;
Jeremy Fitzhardinge4f5ca832011-11-23 00:49:14 -0800504#endif
505
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200506 unsigned int status; /* see STAT flags above */
Dmitry Torokhov05f091ab2005-05-29 02:29:01 -0500507 unsigned claimed; /* Claimed by hidinput, hiddev? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508 unsigned quirks; /* Various quirks the device can pull on us */
Andrew de los Reyesc849a612013-02-18 09:20:21 -0800509 bool io_started; /* Protected by driver_lock. If IO has started */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510
511 struct list_head inputs; /* The list of inputs */
512 void *hiddev; /* The hiddev structure */
Jiri Kosina86166b72007-05-14 09:57:40 +0200513 void *hidraw;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514 int minor; /* Hiddev minor number */
515
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 int open; /* is the device open by anyone? */
517 char name[128]; /* Device name */
518 char phys[64]; /* Device physical location */
519 char uniq[64]; /* Device unique identifier (serial #) */
520
Jiri Kosina229695e2006-12-08 18:40:53 +0100521 void *driver_data;
522
Jiri Slaby93c10132008-06-27 00:04:24 +0200523 /* temporary hid_ff handling (until moved to the drivers) */
524 int (*ff_init)(struct hid_device *);
525
Jiri Kosinaaa938f72006-12-08 18:41:10 +0100526 /* hiddev event handler */
Jiri Slaby93c10132008-06-27 00:04:24 +0200527 int (*hiddev_connect)(struct hid_device *, unsigned int);
Jiri Kosinac4c259b2009-09-15 16:27:45 +0200528 void (*hiddev_disconnect)(struct hid_device *);
Jiri Kosinaaa938f72006-12-08 18:41:10 +0100529 void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field,
530 struct hid_usage *, __s32);
Jiri Kosinaaa8de2f2006-12-08 18:41:17 +0100531 void (*hiddev_report_event) (struct hid_device *, struct hid_report *);
Jiri Kosina86166b72007-05-14 09:57:40 +0200532
Jiri Kosinacd667ce2009-06-12 15:20:57 +0200533 /* debugging support via debugfs */
534 unsigned short debug;
535 struct dentry *debug_dir;
536 struct dentry *debug_rdesc;
537 struct dentry *debug_events;
538 struct list_head debug_list;
Jiri Kosina1deb9d32013-05-06 13:05:50 +0200539 spinlock_t debug_list_lock;
Jiri Kosinacd667ce2009-06-12 15:20:57 +0200540 wait_queue_head_t debug_wait;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541};
542
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200543static inline void *hid_get_drvdata(struct hid_device *hdev)
544{
545 return dev_get_drvdata(&hdev->dev);
546}
547
548static inline void hid_set_drvdata(struct hid_device *hdev, void *data)
549{
550 dev_set_drvdata(&hdev->dev, data);
551}
552
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553#define HID_GLOBAL_STACK_SIZE 4
554#define HID_COLLECTION_STACK_SIZE 4
555
Benjamin Tissoiresf961bd32013-08-22 14:51:08 +0200556#define HID_SCAN_FLAG_MT_WIN_8 0x00000001
557
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558struct hid_parser {
559 struct hid_global global;
560 struct hid_global global_stack[HID_GLOBAL_STACK_SIZE];
561 unsigned global_stack_ptr;
562 struct hid_local local;
563 unsigned collection_stack[HID_COLLECTION_STACK_SIZE];
564 unsigned collection_stack_ptr;
565 struct hid_device *device;
Benjamin Tissoiresf961bd32013-08-22 14:51:08 +0200566 unsigned scan_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567};
568
569struct hid_class_descriptor {
570 __u8 bDescriptorType;
Al Viro01d7b362008-04-28 07:00:05 +0100571 __le16 wDescriptorLength;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572} __attribute__ ((packed));
573
574struct hid_descriptor {
575 __u8 bLength;
576 __u8 bDescriptorType;
Al Viro01d7b362008-04-28 07:00:05 +0100577 __le16 bcdHID;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 __u8 bCountryCode;
579 __u8 bNumDescriptors;
580
581 struct hid_class_descriptor desc[1];
582} __attribute__ ((packed));
583
Henrik Rydberg070748e2012-04-23 12:07:05 +0200584#define HID_DEVICE(b, g, ven, prod) \
585 .bus = (b), .group = (g), .vendor = (ven), .product = (prod)
586#define HID_USB_DEVICE(ven, prod) \
587 .bus = BUS_USB, .vendor = (ven), .product = (prod)
588#define HID_BLUETOOTH_DEVICE(ven, prod) \
589 .bus = BUS_BLUETOOTH, .vendor = (ven), .product = (prod)
Benjamin Tissoires9fb6bf02014-04-07 13:39:33 -0400590#define HID_I2C_DEVICE(ven, prod) \
591 .bus = BUS_I2C, .vendor = (ven), .product = (prod)
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200592
593#define HID_REPORT_ID(rep) \
594 .report_type = (rep)
595#define HID_USAGE_ID(uhid, utype, ucode) \
596 .usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode)
597/* we don't want to catch types and codes equal to 0 */
598#define HID_TERMINATOR (HID_ANY_ID - 1)
599
600struct hid_report_id {
601 __u32 report_type;
602};
603struct hid_usage_id {
604 __u32 usage_hid;
605 __u32 usage_type;
606 __u32 usage_code;
607};
608
609/**
610 * struct hid_driver
611 * @name: driver name (e.g. "Footech_bar-wheel")
612 * @id_table: which devices is this driver for (must be non-NULL for probe
613 * to be called)
Jiri Slaby3a6f82f2008-11-24 16:20:09 +0100614 * @dyn_list: list of dynamically added device ids
615 * @dyn_lock: lock protecting @dyn_list
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200616 * @probe: new device inserted
617 * @remove: device removed (NULL if not a hot-plug capable driver)
618 * @report_table: on which reports to call raw_event (NULL means all)
619 * @raw_event: if report in report_table, this hook is called (NULL means nop)
620 * @usage_table: on which events to call event (NULL means all)
621 * @event: if usage in usage_table, this hook is called (NULL means nop)
Benjamin Tissoires6d85d032013-01-31 17:22:23 +0100622 * @report: this hook is called after parsing a report (NULL means nop)
Jiri Slabyc500c972008-05-16 11:49:16 +0200623 * @report_fixup: called before report descriptor parsing (NULL means nop)
624 * @input_mapping: invoked on input registering before mapping an usage
625 * @input_mapped: invoked on input registering after mapping an usage
Henrik Rydberg9ebf3d72012-07-30 13:28:18 +0200626 * @input_configured: invoked just before the device is registered
Benjamin Tissoires0d2689c2011-01-07 23:44:32 +0100627 * @feature_mapping: invoked on feature registering
Bruno Prémont6a740aa2010-04-25 21:40:03 +0200628 * @suspend: invoked on suspend (NULL means nop)
629 * @resume: invoked on resume if device was not reset (NULL means nop)
630 * @reset_resume: invoked on resume if device was reset (NULL means nop)
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200631 *
Andrew de los Reyesc849a612013-02-18 09:20:21 -0800632 * probe should return -errno on error, or 0 on success. During probe,
633 * input will not be passed to raw_event unless hid_device_io_start is
634 * called.
635 *
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200636 * raw_event and event should return 0 on no action performed, 1 when no
637 * further processing should be done and negative on error
Jiri Slabyc500c972008-05-16 11:49:16 +0200638 *
639 * input_mapping shall return a negative value to completely ignore this usage
640 * (e.g. doubled or invalid usage), zero to continue with parsing of this
641 * usage by generic code (no special handling needed) or positive to skip
642 * generic parsing (needed special handling which was done in the hook already)
643 * input_mapped shall return negative to inform the layer that this usage
644 * should not be considered for further processing or zero to notify that
645 * no processing was performed and should be done in a generic manner
646 * Both these functions may be NULL which means the same behavior as returning
647 * zero from them.
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200648 */
649struct hid_driver {
650 char *name;
651 const struct hid_device_id *id_table;
652
Jiri Slaby3a6f82f2008-11-24 16:20:09 +0100653 struct list_head dyn_list;
654 spinlock_t dyn_lock;
655
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200656 int (*probe)(struct hid_device *dev, const struct hid_device_id *id);
657 void (*remove)(struct hid_device *dev);
658
659 const struct hid_report_id *report_table;
660 int (*raw_event)(struct hid_device *hdev, struct hid_report *report,
661 u8 *data, int size);
662 const struct hid_usage_id *usage_table;
663 int (*event)(struct hid_device *hdev, struct hid_field *field,
664 struct hid_usage *usage, __s32 value);
Benjamin Tissoires6d85d032013-01-31 17:22:23 +0100665 void (*report)(struct hid_device *hdev, struct hid_report *report);
Jiri Slabyc500c972008-05-16 11:49:16 +0200666
Nikolai Kondrashov73e40082010-08-06 23:03:06 +0400667 __u8 *(*report_fixup)(struct hid_device *hdev, __u8 *buf,
668 unsigned int *size);
Jiri Slabyc500c972008-05-16 11:49:16 +0200669
670 int (*input_mapping)(struct hid_device *hdev,
671 struct hid_input *hidinput, struct hid_field *field,
672 struct hid_usage *usage, unsigned long **bit, int *max);
673 int (*input_mapped)(struct hid_device *hdev,
674 struct hid_input *hidinput, struct hid_field *field,
675 struct hid_usage *usage, unsigned long **bit, int *max);
Henrik Rydberg9ebf3d72012-07-30 13:28:18 +0200676 void (*input_configured)(struct hid_device *hdev,
677 struct hid_input *hidinput);
Benjamin Tissoires0d2689c2011-01-07 23:44:32 +0100678 void (*feature_mapping)(struct hid_device *hdev,
Henrik Rydbergf635bd12011-02-24 19:30:59 +0100679 struct hid_field *field,
Benjamin Tissoires0d2689c2011-01-07 23:44:32 +0100680 struct hid_usage *usage);
Bruno Prémont6a740aa2010-04-25 21:40:03 +0200681#ifdef CONFIG_PM
682 int (*suspend)(struct hid_device *hdev, pm_message_t message);
683 int (*resume)(struct hid_device *hdev);
684 int (*reset_resume)(struct hid_device *hdev);
685#endif
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200686/* private: */
687 struct device_driver driver;
688};
689
Jiri Slabyc500c972008-05-16 11:49:16 +0200690/**
691 * hid_ll_driver - low level driver callbacks
692 * @start: called on probe to start the device
693 * @stop: called on remove
694 * @open: called by input layer on open
695 * @close: called by input layer on close
Jiri Slabyc500c972008-05-16 11:49:16 +0200696 * @parse: this method is called only once to parse the device data,
697 * shouldn't allocate anything to not leak memory
Henrik Rydberge90a6df2013-02-25 11:31:43 +0100698 * @request: send report request to device (e.g. feature report)
Henrik Rydberg33734432013-02-25 11:31:44 +0100699 * @wait: wait for buffered io to complete (send/recv reports)
Benjamin Tissoiresb69d6532014-02-05 16:33:16 -0500700 * @raw_request: send raw report request to device (e.g. feature report)
701 * @output_report: send output report to device
Benjamin Tissoires96848192013-02-27 16:38:17 +0100702 * @idle: send idle request to device
Jiri Slabyc500c972008-05-16 11:49:16 +0200703 */
704struct hid_ll_driver {
705 int (*start)(struct hid_device *hdev);
706 void (*stop)(struct hid_device *hdev);
707
708 int (*open)(struct hid_device *hdev);
709 void (*close)(struct hid_device *hdev);
710
Oliver Neukum0361a282008-12-17 15:38:03 +0100711 int (*power)(struct hid_device *hdev, int level);
712
Jiri Slabyc500c972008-05-16 11:49:16 +0200713 int (*parse)(struct hid_device *hdev);
Henrik Rydberge90a6df2013-02-25 11:31:43 +0100714
715 void (*request)(struct hid_device *hdev,
716 struct hid_report *report, int reqtype);
717
Henrik Rydberg33734432013-02-25 11:31:44 +0100718 int (*wait)(struct hid_device *hdev);
719
Frank Praznikcd4dc082014-01-22 13:49:41 -0500720 int (*raw_request) (struct hid_device *hdev, unsigned char reportnum,
721 __u8 *buf, size_t len, unsigned char rtype,
722 int reqtype);
723
724 int (*output_report) (struct hid_device *hdev, __u8 *buf, size_t len);
725
726 int (*idle)(struct hid_device *hdev, int report, int idle, int reqtype);
Jiri Slabyc500c972008-05-16 11:49:16 +0200727};
728
Oliver Neukum0361a282008-12-17 15:38:03 +0100729#define PM_HINT_FULLON 1<<5
730#define PM_HINT_NORMAL 1<<1
731
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732/* Applications from HID Usage Tables 4/8/99 Version 1.1 */
733/* We ignore a few input applications that are not widely used */
Stephane Chatty8b0e58a2010-01-13 21:52:34 +0100734#define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001) || ((a >= 0x000d0002) && (a <= 0x000d0006)))
Jiri Kosina229695e2006-12-08 18:40:53 +0100735
736/* HID core API */
Jiri Kosina58037eb2007-05-30 15:07:13 +0200737
Jiri Kosina58037eb2007-05-30 15:07:13 +0200738extern int hid_debug;
Jiri Kosina58037eb2007-05-30 15:07:13 +0200739
Lamarque V. Souza4529eef2012-12-06 12:39:55 -0200740extern bool hid_ignore(struct hid_device *);
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200741extern int hid_add_device(struct hid_device *);
742extern void hid_destroy_device(struct hid_device *);
743
744extern int __must_check __hid_register_driver(struct hid_driver *,
745 struct module *, const char *mod_name);
Paul Gortmakereb5589a2011-05-27 09:02:11 -0400746
747/* use a define to avoid include chaining to get THIS_MODULE & friends */
748#define hid_register_driver(driver) \
749 __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
750
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200751extern void hid_unregister_driver(struct hid_driver *);
752
H Hartley Sweeten4d02c582012-12-17 15:26:55 -0700753/**
754 * module_hid_driver() - Helper macro for registering a HID driver
755 * @__hid_driver: hid_driver struct
756 *
757 * Helper macro for HID drivers which do not do anything special in module
758 * init/exit. This eliminates a lot of boilerplate. Each module may only
759 * use this macro once, and calling it replaces module_init() and module_exit()
760 */
761#define module_hid_driver(__hid_driver) \
762 module_driver(__hid_driver, hid_register_driver, \
763 hid_unregister_driver)
764
David Howells7d12e782006-10-05 14:55:46 +0100765extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report);
Jiri Slaby93c10132008-06-27 00:04:24 +0200767extern int hidinput_connect(struct hid_device *hid, unsigned int force);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768extern void hidinput_disconnect(struct hid_device *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770int hid_set_field(struct hid_field *, unsigned, __s32);
Jiri Kosinaaa8de2f2006-12-08 18:41:17 +0100771int hid_input_report(struct hid_device *, int type, u8 *, int, int);
Jiri Kosinadde58452006-12-08 18:40:44 +0100772int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
Daniel Kurtz4371ea82011-11-17 19:23:50 +0800773struct hid_field *hidinput_get_led_field(struct hid_device *hid);
774unsigned int hidinput_count_leds(struct hid_device *hid);
Benjamin Tissoires37cf6e62012-11-14 16:59:13 +0100775__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code);
Jiri Kosinadde58452006-12-08 18:40:44 +0100776void hid_output_report(struct hid_report *report, __u8 *data);
Benjamin Tissoires4fa5a7f2014-02-10 12:58:48 -0500777void __hid_request(struct hid_device *hid, struct hid_report *rep, int reqtype);
Jiri Kosina27ce4052013-07-10 19:56:27 +0200778u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags);
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200779struct hid_device *hid_allocate_device(void);
Michael Poole90a006a2010-01-24 22:32:29 -0500780struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id);
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200781int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size);
Kees Cook331415f2013-09-11 21:56:50 +0200782struct hid_report *hid_validate_values(struct hid_device *hid,
783 unsigned int type, unsigned int id,
784 unsigned int field_index,
785 unsigned int report_counts);
Henrik Rydberga7197c2e2012-04-22 14:21:40 +0200786int hid_open_report(struct hid_device *device);
Oliver Neukum0361a282008-12-17 15:38:03 +0100787int hid_check_keys_pressed(struct hid_device *hid);
Jiri Slaby93c10132008-06-27 00:04:24 +0200788int hid_connect(struct hid_device *hid, unsigned int connect_mask);
Jiri Kosinac4c259b2009-09-15 16:27:45 +0200789void hid_disconnect(struct hid_device *hid);
Jeremy Fitzhardingebbc21cf2011-12-02 11:12:36 -0800790const struct hid_device_id *hid_match_id(struct hid_device *hdev,
791 const struct hid_device_id *id);
Benjamin Tissoires77463832012-11-14 16:59:15 +0100792s32 hid_snto32(__u32 value, unsigned n);
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200793
Jiri Slabyc500c972008-05-16 11:49:16 +0200794/**
Andrew de los Reyesc849a612013-02-18 09:20:21 -0800795 * hid_device_io_start - enable HID input during probe, remove
796 *
797 * @hid - the device
798 *
799 * This should only be called during probe or remove and only be
800 * called by the thread calling probe or remove. It will allow
801 * incoming packets to be delivered to the driver.
802 */
803static inline void hid_device_io_start(struct hid_device *hid) {
804 if (hid->io_started) {
805 dev_warn(&hid->dev, "io already started");
806 return;
807 }
808 hid->io_started = true;
809 up(&hid->driver_input_lock);
810}
811
812/**
813 * hid_device_io_stop - disable HID input during probe, remove
814 *
815 * @hid - the device
816 *
817 * Should only be called after hid_device_io_start. It will prevent
818 * incoming packets from going to the driver for the duration of
819 * probe, remove. If called during probe, packets will still go to the
820 * driver after probe is complete. This function should only be called
821 * by the thread calling probe or remove.
822 */
823static inline void hid_device_io_stop(struct hid_device *hid) {
824 if (!hid->io_started) {
825 dev_warn(&hid->dev, "io already stopped");
826 return;
827 }
828 hid->io_started = false;
829 down(&hid->driver_input_lock);
830}
831
832/**
Jiri Slaby022e8c42008-05-16 11:49:18 +0200833 * hid_map_usage - map usage input bits
834 *
835 * @hidinput: hidinput which we are interested in
836 * @usage: usage to fill in
837 * @bit: pointer to input->{}bit (out parameter)
838 * @max: maximal valid usage->code to consider later (out parameter)
839 * @type: input event type (EV_KEY, EV_REL, ...)
840 * @c: code which corresponds to this usage and type
841 */
842static inline void hid_map_usage(struct hid_input *hidinput,
843 struct hid_usage *usage, unsigned long **bit, int *max,
844 __u8 type, __u16 c)
845{
846 struct input_dev *input = hidinput->input;
847
848 usage->type = type;
849 usage->code = c;
850
851 switch (type) {
852 case EV_ABS:
853 *bit = input->absbit;
854 *max = ABS_MAX;
855 break;
856 case EV_REL:
857 *bit = input->relbit;
858 *max = REL_MAX;
859 break;
860 case EV_KEY:
861 *bit = input->keybit;
862 *max = KEY_MAX;
863 break;
864 case EV_LED:
865 *bit = input->ledbit;
866 *max = LED_MAX;
867 break;
868 }
869}
870
871/**
872 * hid_map_usage_clear - map usage input bits and clear the input bit
873 *
874 * The same as hid_map_usage, except the @c bit is also cleared in supported
875 * bits (@bit).
876 */
877static inline void hid_map_usage_clear(struct hid_input *hidinput,
878 struct hid_usage *usage, unsigned long **bit, int *max,
879 __u8 type, __u16 c)
880{
881 hid_map_usage(hidinput, usage, bit, max, type, c);
882 clear_bit(c, *bit);
883}
884
885/**
Jiri Slabyc500c972008-05-16 11:49:16 +0200886 * hid_parse - parse HW reports
887 *
888 * @hdev: hid device
889 *
890 * Call this from probe after you set up the device (if needed). Your
891 * report_fixup will be called (if non-NULL) after reading raw report from
892 * device before passing it to hid layer for real parsing.
893 */
894static inline int __must_check hid_parse(struct hid_device *hdev)
895{
Henrik Rydberga7197c2e2012-04-22 14:21:40 +0200896 return hid_open_report(hdev);
Jiri Slabyc500c972008-05-16 11:49:16 +0200897}
898
899/**
900 * hid_hw_start - start underlaying HW
901 *
902 * @hdev: hid device
Jiri Slaby93c10132008-06-27 00:04:24 +0200903 * @connect_mask: which outputs to connect, see HID_CONNECT_*
Jiri Slabyc500c972008-05-16 11:49:16 +0200904 *
905 * Call this in probe function *after* hid_parse. This will setup HW buffers
906 * and start the device (if not deffered to device open). hid_hw_stop must be
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300907 * called if this was successful.
Jiri Slabyc500c972008-05-16 11:49:16 +0200908 */
Jiri Slaby93c10132008-06-27 00:04:24 +0200909static inline int __must_check hid_hw_start(struct hid_device *hdev,
910 unsigned int connect_mask)
Jiri Slabyc500c972008-05-16 11:49:16 +0200911{
Jiri Slaby93c10132008-06-27 00:04:24 +0200912 int ret = hdev->ll_driver->start(hdev);
913 if (ret || !connect_mask)
914 return ret;
915 ret = hid_connect(hdev, connect_mask);
916 if (ret)
917 hdev->ll_driver->stop(hdev);
918 return ret;
Jiri Slabyc500c972008-05-16 11:49:16 +0200919}
920
921/**
922 * hid_hw_stop - stop underlaying HW
923 *
924 * @hdev: hid device
925 *
926 * This is usually called from remove function or from probe when something
927 * failed and hid_hw_start was called already.
928 */
929static inline void hid_hw_stop(struct hid_device *hdev)
930{
Jiri Kosinac4c259b2009-09-15 16:27:45 +0200931 hid_disconnect(hdev);
Jiri Slabyc500c972008-05-16 11:49:16 +0200932 hdev->ll_driver->stop(hdev);
933}
934
Dmitry Torokhov5bea7662010-12-07 23:02:48 -0800935/**
936 * hid_hw_open - signal underlaying HW to start delivering events
937 *
938 * @hdev: hid device
939 *
940 * Tell underlying HW to start delivering events from the device.
941 * This function should be called sometime after successful call
942 * to hid_hiw_start().
943 */
944static inline int __must_check hid_hw_open(struct hid_device *hdev)
945{
946 return hdev->ll_driver->open(hdev);
947}
948
949/**
950 * hid_hw_close - signal underlaying HW to stop delivering events
951 *
952 * @hdev: hid device
953 *
954 * This function indicates that we are not interested in the events
955 * from this device anymore. Delivery of events may or may not stop,
956 * depending on the number of users still outstanding.
957 */
958static inline void hid_hw_close(struct hid_device *hdev)
959{
960 hdev->ll_driver->close(hdev);
961}
962
963/**
964 * hid_hw_power - requests underlying HW to go into given power mode
965 *
966 * @hdev: hid device
967 * @level: requested power level (one of %PM_HINT_* defines)
968 *
969 * This function requests underlying hardware to enter requested power
970 * mode.
971 */
972
973static inline int hid_hw_power(struct hid_device *hdev, int level)
974{
975 return hdev->ll_driver->power ? hdev->ll_driver->power(hdev, level) : 0;
976}
977
Henrik Rydberge90a6df2013-02-25 11:31:43 +0100978
979/**
980 * hid_hw_request - send report request to device
981 *
982 * @hdev: hid device
983 * @report: report to send
984 * @reqtype: hid request type
985 */
986static inline void hid_hw_request(struct hid_device *hdev,
987 struct hid_report *report, int reqtype)
988{
989 if (hdev->ll_driver->request)
Benjamin Tissoires4fa5a7f2014-02-10 12:58:48 -0500990 return hdev->ll_driver->request(hdev, report, reqtype);
991
992 __hid_request(hdev, report, reqtype);
Henrik Rydberge90a6df2013-02-25 11:31:43 +0100993}
994
Henrik Rydberg33734432013-02-25 11:31:44 +0100995/**
Benjamin Tissoiresb69d6532014-02-05 16:33:16 -0500996 * hid_hw_raw_request - send report request to device
997 *
998 * @hdev: hid device
999 * @reportnum: report ID
1000 * @buf: in/out data to transfer
1001 * @len: length of buf
1002 * @rtype: HID report type
1003 * @reqtype: HID_REQ_GET_REPORT or HID_REQ_SET_REPORT
1004 *
1005 * @return: count of data transfered, negative if error
1006 *
1007 * Same behavior as hid_hw_request, but with raw buffers instead.
1008 */
1009static inline int hid_hw_raw_request(struct hid_device *hdev,
1010 unsigned char reportnum, __u8 *buf,
1011 size_t len, unsigned char rtype, int reqtype)
1012{
Benjamin Tissoires53182512014-02-10 12:58:59 -05001013 if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf)
1014 return -EINVAL;
1015
Benjamin Tissoires3c867262014-02-20 15:24:49 -05001016 return hdev->ll_driver->raw_request(hdev, reportnum, buf, len,
Benjamin Tissoiresb69d6532014-02-05 16:33:16 -05001017 rtype, reqtype);
Benjamin Tissoiresb69d6532014-02-05 16:33:16 -05001018}
1019
1020/**
1021 * hid_hw_output_report - send output report to device
1022 *
1023 * @hdev: hid device
1024 * @buf: raw data to transfer
1025 * @len: length of buf
1026 *
1027 * @return: count of data transfered, negative if error
1028 */
1029static inline int hid_hw_output_report(struct hid_device *hdev, __u8 *buf,
1030 size_t len)
1031{
Benjamin Tissoires53182512014-02-10 12:58:59 -05001032 if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf)
1033 return -EINVAL;
1034
Benjamin Tissoiresb69d6532014-02-05 16:33:16 -05001035 if (hdev->ll_driver->output_report)
1036 return hdev->ll_driver->output_report(hdev, buf, len);
1037
1038 return -ENOSYS;
1039}
1040
1041/**
Benjamin Tissoires96848192013-02-27 16:38:17 +01001042 * hid_hw_idle - send idle request to device
1043 *
1044 * @hdev: hid device
1045 * @report: report to control
1046 * @idle: idle state
1047 * @reqtype: hid request type
1048 */
1049static inline int hid_hw_idle(struct hid_device *hdev, int report, int idle,
1050 int reqtype)
1051{
1052 if (hdev->ll_driver->idle)
1053 return hdev->ll_driver->idle(hdev, report, idle, reqtype);
1054
1055 return 0;
1056}
1057
1058/**
Henrik Rydberg33734432013-02-25 11:31:44 +01001059 * hid_hw_wait - wait for buffered io to complete
1060 *
1061 * @hdev: hid device
1062 */
1063static inline void hid_hw_wait(struct hid_device *hdev)
1064{
1065 if (hdev->ll_driver->wait)
1066 hdev->ll_driver->wait(hdev);
1067}
1068
Jiri Kosinab6787242012-04-27 00:56:08 +02001069int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
Jiri Slaby85cdaf52008-05-16 11:49:15 +02001070 int interrupt);
1071
Paul Walmsley876b9272007-04-19 14:56:12 +02001072/* HID quirks API */
Paul Walmsley2eb5dc32007-04-19 13:27:04 +02001073u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct);
Paul Walmsley876b9272007-04-19 14:56:12 +02001074int usbhid_quirks_init(char **quirks_param);
1075void usbhid_quirks_exit(void);
Paul Walmsley2eb5dc32007-04-19 13:27:04 +02001076
Anssi Hannula224ee882006-07-19 01:40:47 -04001077#ifdef CONFIG_HID_PID
1078int hid_pidff_init(struct hid_device *hid);
1079#else
Jiri Slaby76483cf2008-09-18 12:23:33 +02001080#define hid_pidff_init NULL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001081#endif
Jiri Kosina58037eb2007-05-30 15:07:13 +02001082
Joe Perches4291ee32010-12-09 19:29:03 -08001083#define dbg_hid(format, arg...) \
1084do { \
1085 if (hid_debug) \
1086 printk(KERN_DEBUG "%s: " format, __FILE__, ##arg); \
1087} while (0)
1088
1089#define hid_printk(level, hid, fmt, arg...) \
1090 dev_printk(level, &(hid)->dev, fmt, ##arg)
1091#define hid_emerg(hid, fmt, arg...) \
1092 dev_emerg(&(hid)->dev, fmt, ##arg)
1093#define hid_crit(hid, fmt, arg...) \
1094 dev_crit(&(hid)->dev, fmt, ##arg)
1095#define hid_alert(hid, fmt, arg...) \
1096 dev_alert(&(hid)->dev, fmt, ##arg)
1097#define hid_err(hid, fmt, arg...) \
1098 dev_err(&(hid)->dev, fmt, ##arg)
1099#define hid_notice(hid, fmt, arg...) \
1100 dev_notice(&(hid)->dev, fmt, ##arg)
1101#define hid_warn(hid, fmt, arg...) \
1102 dev_warn(&(hid)->dev, fmt, ##arg)
1103#define hid_info(hid, fmt, arg...) \
1104 dev_info(&(hid)->dev, fmt, ##arg)
1105#define hid_dbg(hid, fmt, arg...) \
1106 dev_dbg(&(hid)->dev, fmt, ##arg)
1107
Jiri Kosina57d292b2007-10-15 15:17:41 +02001108#endif