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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __HID_H
2#define __HID_H
3
4/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 * Copyright (c) 1999 Andreas Gal
6 * Copyright (c) 2000-2001 Vojtech Pavlik
Jiri Kosinab55fd232007-02-21 19:27:49 +01007 * Copyright (c) 2006-2007 Jiri Kosina
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 */
9
10/*
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 *
25 * Should you need to contact me, the author, you can do so either by
26 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
27 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
28 */
29
Linus Torvalds1da177e2005-04-16 15:20:36 -070030/*
31 * USB HID (Human Interface Device) interface class code
32 */
33
34#define USB_INTERFACE_CLASS_HID 3
35
36/*
Alan Stern0f28b552006-05-15 14:49:04 -040037 * USB HID interface subclass and protocol codes
38 */
39
40#define USB_INTERFACE_SUBCLASS_BOOT 1
41#define USB_INTERFACE_PROTOCOL_KEYBOARD 1
42#define USB_INTERFACE_PROTOCOL_MOUSE 2
43
44/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 * HID class requests
46 */
47
48#define HID_REQ_GET_REPORT 0x01
49#define HID_REQ_GET_IDLE 0x02
50#define HID_REQ_GET_PROTOCOL 0x03
51#define HID_REQ_SET_REPORT 0x09
52#define HID_REQ_SET_IDLE 0x0A
53#define HID_REQ_SET_PROTOCOL 0x0B
54
55/*
56 * HID class descriptor types
57 */
58
59#define HID_DT_HID (USB_TYPE_CLASS | 0x01)
60#define HID_DT_REPORT (USB_TYPE_CLASS | 0x02)
61#define HID_DT_PHYSICAL (USB_TYPE_CLASS | 0x03)
62
Jiri Kosina57d292b2007-10-15 15:17:41 +020063#define HID_MAX_DESCRIPTOR_SIZE 4096
64
65#ifdef __KERNEL__
66
67#include <linux/types.h>
68#include <linux/slab.h>
69#include <linux/list.h>
Jiri Slabye8c84f92008-05-19 15:50:01 +020070#include <linux/mod_devicetable.h> /* hid_device_id */
Jiri Kosina57d292b2007-10-15 15:17:41 +020071#include <linux/timer.h>
72#include <linux/workqueue.h>
73#include <linux/input.h>
74
Linus Torvalds1da177e2005-04-16 15:20:36 -070075/*
76 * We parse each description item into this structure. Short items data
77 * values are expanded to 32-bit signed int, long items contain a pointer
78 * into the data area.
79 */
80
81struct hid_item {
82 unsigned format;
83 __u8 size;
84 __u8 type;
85 __u8 tag;
86 union {
87 __u8 u8;
88 __s8 s8;
89 __u16 u16;
90 __s16 s16;
91 __u32 u32;
92 __s32 s32;
93 __u8 *longdata;
94 } data;
95};
96
97/*
98 * HID report item format
99 */
100
101#define HID_ITEM_FORMAT_SHORT 0
102#define HID_ITEM_FORMAT_LONG 1
103
104/*
105 * Special tag indicating long items
106 */
107
108#define HID_ITEM_TAG_LONG 15
109
110/*
111 * HID report descriptor item type (prefix bit 2,3)
112 */
113
114#define HID_ITEM_TYPE_MAIN 0
115#define HID_ITEM_TYPE_GLOBAL 1
116#define HID_ITEM_TYPE_LOCAL 2
117#define HID_ITEM_TYPE_RESERVED 3
118
119/*
120 * HID report descriptor main item tags
121 */
122
123#define HID_MAIN_ITEM_TAG_INPUT 8
124#define HID_MAIN_ITEM_TAG_OUTPUT 9
125#define HID_MAIN_ITEM_TAG_FEATURE 11
126#define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10
127#define HID_MAIN_ITEM_TAG_END_COLLECTION 12
128
129/*
130 * HID report descriptor main item contents
131 */
132
133#define HID_MAIN_ITEM_CONSTANT 0x001
134#define HID_MAIN_ITEM_VARIABLE 0x002
135#define HID_MAIN_ITEM_RELATIVE 0x004
Dmitry Torokhov05f091ab2005-05-29 02:29:01 -0500136#define HID_MAIN_ITEM_WRAP 0x008
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137#define HID_MAIN_ITEM_NONLINEAR 0x010
138#define HID_MAIN_ITEM_NO_PREFERRED 0x020
139#define HID_MAIN_ITEM_NULL_STATE 0x040
140#define HID_MAIN_ITEM_VOLATILE 0x080
141#define HID_MAIN_ITEM_BUFFERED_BYTE 0x100
142
143/*
144 * HID report descriptor collection item types
145 */
146
147#define HID_COLLECTION_PHYSICAL 0
148#define HID_COLLECTION_APPLICATION 1
149#define HID_COLLECTION_LOGICAL 2
150
151/*
152 * HID report descriptor global item tags
153 */
154
155#define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0
156#define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1
157#define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2
158#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3
159#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4
160#define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5
161#define HID_GLOBAL_ITEM_TAG_UNIT 6
162#define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7
163#define HID_GLOBAL_ITEM_TAG_REPORT_ID 8
164#define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9
165#define HID_GLOBAL_ITEM_TAG_PUSH 10
166#define HID_GLOBAL_ITEM_TAG_POP 11
167
168/*
169 * HID report descriptor local item tags
170 */
171
172#define HID_LOCAL_ITEM_TAG_USAGE 0
173#define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1
174#define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2
175#define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3
176#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4
177#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5
178#define HID_LOCAL_ITEM_TAG_STRING_INDEX 7
179#define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8
180#define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9
181#define HID_LOCAL_ITEM_TAG_DELIMITER 10
182
183/*
184 * HID usage tables
185 */
186
187#define HID_USAGE_PAGE 0xffff0000
188
189#define HID_UP_UNDEFINED 0x00000000
Dmitry Torokhov05f091ab2005-05-29 02:29:01 -0500190#define HID_UP_GENDESK 0x00010000
Vojtech Pavlik0aebfda2005-09-05 00:07:59 -0500191#define HID_UP_SIMULATION 0x00020000
Dmitry Torokhov05f091ab2005-05-29 02:29:01 -0500192#define HID_UP_KEYBOARD 0x00070000
193#define HID_UP_LED 0x00080000
194#define HID_UP_BUTTON 0x00090000
195#define HID_UP_ORDINAL 0x000a0000
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196#define HID_UP_CONSUMER 0x000c0000
Dmitry Torokhov05f091ab2005-05-29 02:29:01 -0500197#define HID_UP_DIGITIZER 0x000d0000
198#define HID_UP_PID 0x000f0000
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199#define HID_UP_HPVENDOR 0xff7f0000
200#define HID_UP_MSVENDOR 0xff000000
Stelian Pope875ce32005-09-05 01:57:33 -0500201#define HID_UP_CUSTOM 0x00ff0000
202#define HID_UP_LOGIVENDOR 0xffbc0000
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203
204#define HID_USAGE 0x0000ffff
205
206#define HID_GD_POINTER 0x00010001
207#define HID_GD_MOUSE 0x00010002
208#define HID_GD_JOYSTICK 0x00010004
209#define HID_GD_GAMEPAD 0x00010005
210#define HID_GD_KEYBOARD 0x00010006
211#define HID_GD_KEYPAD 0x00010007
212#define HID_GD_MULTIAXIS 0x00010008
213#define HID_GD_X 0x00010030
214#define HID_GD_Y 0x00010031
215#define HID_GD_Z 0x00010032
216#define HID_GD_RX 0x00010033
217#define HID_GD_RY 0x00010034
218#define HID_GD_RZ 0x00010035
219#define HID_GD_SLIDER 0x00010036
220#define HID_GD_DIAL 0x00010037
221#define HID_GD_WHEEL 0x00010038
222#define HID_GD_HATSWITCH 0x00010039
223#define HID_GD_BUFFER 0x0001003a
224#define HID_GD_BYTECOUNT 0x0001003b
225#define HID_GD_MOTION 0x0001003c
226#define HID_GD_START 0x0001003d
227#define HID_GD_SELECT 0x0001003e
228#define HID_GD_VX 0x00010040
229#define HID_GD_VY 0x00010041
230#define HID_GD_VZ 0x00010042
231#define HID_GD_VBRX 0x00010043
232#define HID_GD_VBRY 0x00010044
233#define HID_GD_VBRZ 0x00010045
234#define HID_GD_VNO 0x00010046
235#define HID_GD_FEATURE 0x00010047
236#define HID_GD_UP 0x00010090
237#define HID_GD_DOWN 0x00010091
238#define HID_GD_RIGHT 0x00010092
239#define HID_GD_LEFT 0x00010093
240
Stephane Chatty89f536c2009-05-20 15:41:24 +0200241#define HID_DG_DIGITIZER 0x000d0001
242#define HID_DG_PEN 0x000d0002
243#define HID_DG_LIGHTPEN 0x000d0003
244#define HID_DG_TOUCHSCREEN 0x000d0004
245#define HID_DG_TOUCHPAD 0x000d0005
246#define HID_DG_STYLUS 0x000d0020
247#define HID_DG_PUCK 0x000d0021
248#define HID_DG_FINGER 0x000d0022
249#define HID_DG_TIPPRESSURE 0x000d0030
250#define HID_DG_BARRELPRESSURE 0x000d0031
251#define HID_DG_INRANGE 0x000d0032
252#define HID_DG_TOUCH 0x000d0033
253#define HID_DG_UNTOUCH 0x000d0034
254#define HID_DG_TAP 0x000d0035
255#define HID_DG_TABLETFUNCTIONKEY 0x000d0039
256#define HID_DG_PROGRAMCHANGEKEY 0x000d003a
257#define HID_DG_INVERT 0x000d003c
258#define HID_DG_TIPSWITCH 0x000d0042
259#define HID_DG_TIPSWITCH2 0x000d0043
260#define HID_DG_BARRELSWITCH 0x000d0044
261#define HID_DG_ERASER 0x000d0045
262#define HID_DG_TABLETPICK 0x000d0046
263/*
264 * as of May 20, 2009 the usages below are not yet in the official USB spec
265 * but are being pushed by Microsft as described in their paper "Digitizer
266 * Drivers for Windows Touch and Pen-Based Computers"
267 */
268#define HID_DG_CONFIDENCE 0x000d0047
269#define HID_DG_WIDTH 0x000d0048
270#define HID_DG_HEIGHT 0x000d0049
271#define HID_DG_CONTACTID 0x000d0051
272#define HID_DG_INPUTMODE 0x000d0052
273#define HID_DG_DEVICEINDEX 0x000d0053
274#define HID_DG_CONTACTCOUNT 0x000d0054
275#define HID_DG_CONTACTMAX 0x000d0055
276
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277/*
278 * HID report types --- Ouch! HID spec says 1 2 3!
279 */
280
281#define HID_INPUT_REPORT 0
282#define HID_OUTPUT_REPORT 1
283#define HID_FEATURE_REPORT 2
284
285/*
Jiri Slaby93c10132008-06-27 00:04:24 +0200286 * HID connect requests
287 */
288
289#define HID_CONNECT_HIDINPUT 0x01
290#define HID_CONNECT_HIDINPUT_FORCE 0x02
291#define HID_CONNECT_HIDRAW 0x04
292#define HID_CONNECT_HIDDEV 0x08
293#define HID_CONNECT_HIDDEV_FORCE 0x10
294#define HID_CONNECT_FF 0x20
295#define HID_CONNECT_DEFAULT (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \
296 HID_CONNECT_HIDDEV|HID_CONNECT_FF)
297
298/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 * HID device quirks.
300 */
301
Paul Walmsley876b9272007-04-19 14:56:12 +0200302/*
303 * Increase this if you need to configure more HID quirks at module load time
304 */
305#define MAX_USBHID_BOOT_QUIRKS 4
306
Michael Hanselmanneab9edd2006-01-14 10:08:06 -0500307#define HID_QUIRK_INVERT 0x00000001
308#define HID_QUIRK_NOTOUCH 0x00000002
Jiri Kosina6f4303f2009-01-29 00:15:51 +0100309#define HID_QUIRK_IGNORE 0x00000004
Michael Hanselmanneab9edd2006-01-14 10:08:06 -0500310#define HID_QUIRK_NOGET 0x00000008
Bastien Nocerab5e5a372010-04-16 17:19:50 +0100311#define HID_QUIRK_HIDDEV_FORCE 0x00000010
Michael Hanselmanneab9edd2006-01-14 10:08:06 -0500312#define HID_QUIRK_BADPAD 0x00000020
313#define HID_QUIRK_MULTI_INPUT 0x00000040
Daniel Mack3a343ee2010-07-12 19:28:27 +0200314#define HID_QUIRK_HIDINPUT_FORCE 0x00000080
Jiri Kosinaea9a4a82007-06-19 14:09:14 +0200315#define HID_QUIRK_SKIP_OUTPUT_REPORTS 0x00010000
Pekka Sarnilaf345c372008-03-06 13:23:14 +0100316#define HID_QUIRK_FULLSPEED_INTERVAL 0x10000000
Jiri Kosina5b915d92009-11-05 14:08:03 +0100317#define HID_QUIRK_NO_INIT_REPORTS 0x20000000
Bastien Nocerab5e5a372010-04-16 17:19:50 +0100318#define HID_QUIRK_NO_IGNORE 0x40000000
Henrik Rydberg24750f32010-08-24 10:54:44 +0200319#define HID_QUIRK_NO_INPUT_SYNC 0x80000000
Jiri Kosinaea9a4a82007-06-19 14:09:14 +0200320
321/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 * This is the global environment of the parser. This information is
323 * persistent for main-items. The global environment can be saved and
324 * restored with PUSH/POP statements.
325 */
326
327struct hid_global {
328 unsigned usage_page;
329 __s32 logical_minimum;
330 __s32 logical_maximum;
331 __s32 physical_minimum;
332 __s32 physical_maximum;
333 __s32 unit_exponent;
334 unsigned unit;
335 unsigned report_id;
336 unsigned report_size;
337 unsigned report_count;
338};
339
340/*
341 * This is the local environment. It is persistent up the next main-item.
342 */
343
Jiri Kosina5f1ab742008-03-14 16:53:07 +0100344#define HID_MAX_USAGES 12288
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345#define HID_DEFAULT_NUM_COLLECTIONS 16
346
347struct hid_local {
348 unsigned usage[HID_MAX_USAGES]; /* usage array */
349 unsigned collection_index[HID_MAX_USAGES]; /* collection index array */
350 unsigned usage_index;
351 unsigned usage_minimum;
352 unsigned delimiter_depth;
353 unsigned delimiter_branch;
354};
355
356/*
357 * This is the collection stack. We climb up the stack to determine
358 * application and function of each field.
359 */
360
361struct hid_collection {
362 unsigned type;
363 unsigned usage;
364 unsigned level;
365};
366
367struct hid_usage {
368 unsigned hid; /* hid usage code */
369 unsigned collection_index; /* index into collection array */
370 /* hidinput data */
371 __u16 code; /* input driver code */
372 __u8 type; /* input driver type */
373 __s8 hat_min; /* hat switch fun */
374 __s8 hat_max; /* ditto */
375 __s8 hat_dir; /* ditto */
376};
377
378struct hid_input;
379
380struct hid_field {
381 unsigned physical; /* physical usage for this field */
382 unsigned logical; /* logical usage for this field */
383 unsigned application; /* application usage for this field */
384 struct hid_usage *usage; /* usage table for this function */
385 unsigned maxusage; /* maximum usage index */
386 unsigned flags; /* main-item flags (i.e. volatile,array,constant) */
387 unsigned report_offset; /* bit offset in the report */
388 unsigned report_size; /* size of this field in the report */
389 unsigned report_count; /* number of this field in the report */
390 unsigned report_type; /* (input,output,feature) */
391 __s32 *value; /* last known value(s) */
392 __s32 logical_minimum;
393 __s32 logical_maximum;
394 __s32 physical_minimum;
395 __s32 physical_maximum;
396 __s32 unit_exponent;
397 unsigned unit;
398 struct hid_report *report; /* associated report */
399 unsigned index; /* index into report->field[] */
400 /* hidinput data */
401 struct hid_input *hidinput; /* associated input structure */
402 __u16 dpad; /* dpad input code */
403};
404
Benjamin Tissoires281054a2011-01-07 23:45:11 +0100405#define HID_MAX_FIELDS 128
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406
407struct hid_report {
408 struct list_head list;
409 unsigned id; /* id of this report */
410 unsigned type; /* report type */
411 struct hid_field *field[HID_MAX_FIELDS]; /* fields of the report */
412 unsigned maxfield; /* maximum valid field index */
413 unsigned size; /* size of the report (bits) */
414 struct hid_device *device; /* associated device */
415};
416
417struct hid_report_enum {
418 unsigned numbered;
419 struct list_head report_list;
420 struct hid_report *report_id_hash[256];
421};
422
423#define HID_REPORT_TYPES 3
424
Michael Haboustakbf0964d2005-09-05 00:12:01 -0500425#define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */
426#define HID_MAX_BUFFER_SIZE 4096 /* 4kb */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427#define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */
428#define HID_OUTPUT_FIFO_SIZE 64
429
430struct hid_control_fifo {
431 unsigned char dir;
432 struct hid_report *report;
Anssi Hannulaf129ea62008-10-04 14:44:06 +0200433 char *raw_report;
434};
435
436struct hid_output_fifo {
437 struct hid_report *report;
438 char *raw_report;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439};
440
441#define HID_CLAIMED_INPUT 1
442#define HID_CLAIMED_HIDDEV 2
Jiri Kosina86166b72007-05-14 09:57:40 +0200443#define HID_CLAIMED_HIDRAW 4
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200445#define HID_STAT_ADDED 1
Jiri Slabyc500c972008-05-16 11:49:16 +0200446#define HID_STAT_PARSED 2
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200447
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448struct hid_input {
449 struct list_head list;
450 struct hid_report *report;
Dmitry Torokhovc5b7c7c2005-09-15 02:01:47 -0500451 struct input_dev *input;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452};
453
Jiri Slabya73a6372008-10-22 14:45:11 +0200454enum hid_type {
455 HID_TYPE_OTHER = 0,
456 HID_TYPE_USBMOUSE
457};
458
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200459struct hid_driver;
Jiri Slabyc500c972008-05-16 11:49:16 +0200460struct hid_ll_driver;
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200461
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462struct hid_device { /* device report descriptor */
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200463 __u8 *rdesc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 unsigned rsize;
465 struct hid_collection *collection; /* List of HID collections */
466 unsigned collection_size; /* Number of allocated hid_collections */
467 unsigned maxcollection; /* Number of parsed collections */
468 unsigned maxapplication; /* Number of applications */
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200469 __u16 bus; /* BUS ID */
470 __u32 vendor; /* Vendor ID */
471 __u32 product; /* Product ID */
472 __u32 version; /* HID version */
Jiri Slabya73a6372008-10-22 14:45:11 +0200473 enum hid_type type; /* device type (mouse, kbd, ...) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 unsigned country; /* HID country */
475 struct hid_report_enum report_enum[HID_REPORT_TYPES];
476
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200477 struct device dev; /* device */
478 struct hid_driver *driver;
Jiri Slabyc500c972008-05-16 11:49:16 +0200479 struct hid_ll_driver *ll_driver;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200481 unsigned int status; /* see STAT flags above */
Dmitry Torokhov05f091ab2005-05-29 02:29:01 -0500482 unsigned claimed; /* Claimed by hidinput, hiddev? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 unsigned quirks; /* Various quirks the device can pull on us */
484
485 struct list_head inputs; /* The list of inputs */
486 void *hiddev; /* The hiddev structure */
Jiri Kosina86166b72007-05-14 09:57:40 +0200487 void *hidraw;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 int minor; /* Hiddev minor number */
489
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 int open; /* is the device open by anyone? */
491 char name[128]; /* Device name */
492 char phys[64]; /* Device physical location */
493 char uniq[64]; /* Device unique identifier (serial #) */
494
Jiri Kosina229695e2006-12-08 18:40:53 +0100495 void *driver_data;
496
Jiri Slaby93c10132008-06-27 00:04:24 +0200497 /* temporary hid_ff handling (until moved to the drivers) */
498 int (*ff_init)(struct hid_device *);
499
Jiri Kosinaaa938f72006-12-08 18:41:10 +0100500 /* hiddev event handler */
Jiri Slaby93c10132008-06-27 00:04:24 +0200501 int (*hiddev_connect)(struct hid_device *, unsigned int);
Jiri Kosinac4c259b2009-09-15 16:27:45 +0200502 void (*hiddev_disconnect)(struct hid_device *);
Jiri Kosinaaa938f72006-12-08 18:41:10 +0100503 void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field,
504 struct hid_usage *, __s32);
Jiri Kosinaaa8de2f2006-12-08 18:41:17 +0100505 void (*hiddev_report_event) (struct hid_device *, struct hid_report *);
Jiri Kosina86166b72007-05-14 09:57:40 +0200506
507 /* handler for raw output data, used by hidraw */
Jiri Kosinad4bfa032010-01-29 15:03:36 +0100508 int (*hid_output_raw_report) (struct hid_device *, __u8 *, size_t, unsigned char);
Jiri Kosinacd667ce2009-06-12 15:20:57 +0200509
510 /* debugging support via debugfs */
511 unsigned short debug;
512 struct dentry *debug_dir;
513 struct dentry *debug_rdesc;
514 struct dentry *debug_events;
515 struct list_head debug_list;
516 wait_queue_head_t debug_wait;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517};
518
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200519static inline void *hid_get_drvdata(struct hid_device *hdev)
520{
521 return dev_get_drvdata(&hdev->dev);
522}
523
524static inline void hid_set_drvdata(struct hid_device *hdev, void *data)
525{
526 dev_set_drvdata(&hdev->dev, data);
527}
528
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529#define HID_GLOBAL_STACK_SIZE 4
530#define HID_COLLECTION_STACK_SIZE 4
531
532struct hid_parser {
533 struct hid_global global;
534 struct hid_global global_stack[HID_GLOBAL_STACK_SIZE];
535 unsigned global_stack_ptr;
536 struct hid_local local;
537 unsigned collection_stack[HID_COLLECTION_STACK_SIZE];
538 unsigned collection_stack_ptr;
539 struct hid_device *device;
540};
541
542struct hid_class_descriptor {
543 __u8 bDescriptorType;
Al Viro01d7b362008-04-28 07:00:05 +0100544 __le16 wDescriptorLength;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545} __attribute__ ((packed));
546
547struct hid_descriptor {
548 __u8 bLength;
549 __u8 bDescriptorType;
Al Viro01d7b362008-04-28 07:00:05 +0100550 __le16 bcdHID;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551 __u8 bCountryCode;
552 __u8 bNumDescriptors;
553
554 struct hid_class_descriptor desc[1];
555} __attribute__ ((packed));
556
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200557#define HID_DEVICE(b, ven, prod) \
558 .bus = (b), \
559 .vendor = (ven), .product = (prod)
560
561#define HID_USB_DEVICE(ven, prod) HID_DEVICE(BUS_USB, ven, prod)
562#define HID_BLUETOOTH_DEVICE(ven, prod) HID_DEVICE(BUS_BLUETOOTH, ven, prod)
563
564#define HID_REPORT_ID(rep) \
565 .report_type = (rep)
566#define HID_USAGE_ID(uhid, utype, ucode) \
567 .usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode)
568/* we don't want to catch types and codes equal to 0 */
569#define HID_TERMINATOR (HID_ANY_ID - 1)
570
571struct hid_report_id {
572 __u32 report_type;
573};
574struct hid_usage_id {
575 __u32 usage_hid;
576 __u32 usage_type;
577 __u32 usage_code;
578};
579
580/**
581 * struct hid_driver
582 * @name: driver name (e.g. "Footech_bar-wheel")
583 * @id_table: which devices is this driver for (must be non-NULL for probe
584 * to be called)
Jiri Slaby3a6f82f2008-11-24 16:20:09 +0100585 * @dyn_list: list of dynamically added device ids
586 * @dyn_lock: lock protecting @dyn_list
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200587 * @probe: new device inserted
588 * @remove: device removed (NULL if not a hot-plug capable driver)
589 * @report_table: on which reports to call raw_event (NULL means all)
590 * @raw_event: if report in report_table, this hook is called (NULL means nop)
591 * @usage_table: on which events to call event (NULL means all)
592 * @event: if usage in usage_table, this hook is called (NULL means nop)
Jiri Slabyc500c972008-05-16 11:49:16 +0200593 * @report_fixup: called before report descriptor parsing (NULL means nop)
594 * @input_mapping: invoked on input registering before mapping an usage
595 * @input_mapped: invoked on input registering after mapping an usage
Benjamin Tissoires0d2689c2011-01-07 23:44:32 +0100596 * @feature_mapping: invoked on feature registering
Bruno Prémont6a740aa2010-04-25 21:40:03 +0200597 * @suspend: invoked on suspend (NULL means nop)
598 * @resume: invoked on resume if device was not reset (NULL means nop)
599 * @reset_resume: invoked on resume if device was reset (NULL means nop)
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200600 *
601 * raw_event and event should return 0 on no action performed, 1 when no
602 * further processing should be done and negative on error
Jiri Slabyc500c972008-05-16 11:49:16 +0200603 *
604 * input_mapping shall return a negative value to completely ignore this usage
605 * (e.g. doubled or invalid usage), zero to continue with parsing of this
606 * usage by generic code (no special handling needed) or positive to skip
607 * generic parsing (needed special handling which was done in the hook already)
608 * input_mapped shall return negative to inform the layer that this usage
609 * should not be considered for further processing or zero to notify that
610 * no processing was performed and should be done in a generic manner
611 * Both these functions may be NULL which means the same behavior as returning
612 * zero from them.
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200613 */
614struct hid_driver {
615 char *name;
616 const struct hid_device_id *id_table;
617
Jiri Slaby3a6f82f2008-11-24 16:20:09 +0100618 struct list_head dyn_list;
619 spinlock_t dyn_lock;
620
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200621 int (*probe)(struct hid_device *dev, const struct hid_device_id *id);
622 void (*remove)(struct hid_device *dev);
623
624 const struct hid_report_id *report_table;
625 int (*raw_event)(struct hid_device *hdev, struct hid_report *report,
626 u8 *data, int size);
627 const struct hid_usage_id *usage_table;
628 int (*event)(struct hid_device *hdev, struct hid_field *field,
629 struct hid_usage *usage, __s32 value);
Jiri Slabyc500c972008-05-16 11:49:16 +0200630
Nikolai Kondrashov73e40082010-08-06 23:03:06 +0400631 __u8 *(*report_fixup)(struct hid_device *hdev, __u8 *buf,
632 unsigned int *size);
Jiri Slabyc500c972008-05-16 11:49:16 +0200633
634 int (*input_mapping)(struct hid_device *hdev,
635 struct hid_input *hidinput, struct hid_field *field,
636 struct hid_usage *usage, unsigned long **bit, int *max);
637 int (*input_mapped)(struct hid_device *hdev,
638 struct hid_input *hidinput, struct hid_field *field,
639 struct hid_usage *usage, unsigned long **bit, int *max);
Benjamin Tissoires0d2689c2011-01-07 23:44:32 +0100640 void (*feature_mapping)(struct hid_device *hdev,
641 struct hid_input *hidinput, struct hid_field *field,
642 struct hid_usage *usage);
Bruno Prémont6a740aa2010-04-25 21:40:03 +0200643#ifdef CONFIG_PM
644 int (*suspend)(struct hid_device *hdev, pm_message_t message);
645 int (*resume)(struct hid_device *hdev);
646 int (*reset_resume)(struct hid_device *hdev);
647#endif
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200648/* private: */
649 struct device_driver driver;
650};
651
Jiri Slabyc500c972008-05-16 11:49:16 +0200652/**
653 * hid_ll_driver - low level driver callbacks
654 * @start: called on probe to start the device
655 * @stop: called on remove
656 * @open: called by input layer on open
657 * @close: called by input layer on close
658 * @hidinput_input_event: event input event (e.g. ff or leds)
659 * @parse: this method is called only once to parse the device data,
660 * shouldn't allocate anything to not leak memory
661 */
662struct hid_ll_driver {
663 int (*start)(struct hid_device *hdev);
664 void (*stop)(struct hid_device *hdev);
665
666 int (*open)(struct hid_device *hdev);
667 void (*close)(struct hid_device *hdev);
668
Oliver Neukum0361a282008-12-17 15:38:03 +0100669 int (*power)(struct hid_device *hdev, int level);
670
Jiri Slabyc500c972008-05-16 11:49:16 +0200671 int (*hidinput_input_event) (struct input_dev *idev, unsigned int type,
672 unsigned int code, int value);
673
674 int (*parse)(struct hid_device *hdev);
675};
676
Oliver Neukum0361a282008-12-17 15:38:03 +0100677#define PM_HINT_FULLON 1<<5
678#define PM_HINT_NORMAL 1<<1
679
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680/* Applications from HID Usage Tables 4/8/99 Version 1.1 */
681/* We ignore a few input applications that are not widely used */
Stephane Chatty8b0e58a2010-01-13 21:52:34 +0100682#define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001) || ((a >= 0x000d0002) && (a <= 0x000d0006)))
Jiri Kosina229695e2006-12-08 18:40:53 +0100683
684/* HID core API */
Jiri Kosina58037eb2007-05-30 15:07:13 +0200685
Jiri Kosina58037eb2007-05-30 15:07:13 +0200686extern int hid_debug;
Jiri Kosina58037eb2007-05-30 15:07:13 +0200687
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200688extern int hid_add_device(struct hid_device *);
689extern void hid_destroy_device(struct hid_device *);
690
691extern int __must_check __hid_register_driver(struct hid_driver *,
692 struct module *, const char *mod_name);
693static inline int __must_check hid_register_driver(struct hid_driver *driver)
694{
695 return __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME);
696}
697extern void hid_unregister_driver(struct hid_driver *);
698
David Howells7d12e782006-10-05 14:55:46 +0100699extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report);
Jiri Slaby93c10132008-06-27 00:04:24 +0200701extern int hidinput_connect(struct hid_device *hid, unsigned int force);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702extern void hidinput_disconnect(struct hid_device *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704int hid_set_field(struct hid_field *, unsigned, __s32);
Jiri Kosinaaa8de2f2006-12-08 18:41:17 +0100705int hid_input_report(struct hid_device *, int type, u8 *, int, int);
Jiri Kosinadde58452006-12-08 18:40:44 +0100706int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
Jiri Kosinadde58452006-12-08 18:40:44 +0100707void hid_output_report(struct hid_report *report, __u8 *data);
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200708struct hid_device *hid_allocate_device(void);
Michael Poole90a006a2010-01-24 22:32:29 -0500709struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id);
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200710int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size);
Oliver Neukum0361a282008-12-17 15:38:03 +0100711int hid_check_keys_pressed(struct hid_device *hid);
Jiri Slaby93c10132008-06-27 00:04:24 +0200712int hid_connect(struct hid_device *hid, unsigned int connect_mask);
Jiri Kosinac4c259b2009-09-15 16:27:45 +0200713void hid_disconnect(struct hid_device *hid);
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200714
Jiri Slabyc500c972008-05-16 11:49:16 +0200715/**
Jiri Slaby022e8c42008-05-16 11:49:18 +0200716 * hid_map_usage - map usage input bits
717 *
718 * @hidinput: hidinput which we are interested in
719 * @usage: usage to fill in
720 * @bit: pointer to input->{}bit (out parameter)
721 * @max: maximal valid usage->code to consider later (out parameter)
722 * @type: input event type (EV_KEY, EV_REL, ...)
723 * @c: code which corresponds to this usage and type
724 */
725static inline void hid_map_usage(struct hid_input *hidinput,
726 struct hid_usage *usage, unsigned long **bit, int *max,
727 __u8 type, __u16 c)
728{
729 struct input_dev *input = hidinput->input;
730
731 usage->type = type;
732 usage->code = c;
733
734 switch (type) {
735 case EV_ABS:
736 *bit = input->absbit;
737 *max = ABS_MAX;
738 break;
739 case EV_REL:
740 *bit = input->relbit;
741 *max = REL_MAX;
742 break;
743 case EV_KEY:
744 *bit = input->keybit;
745 *max = KEY_MAX;
746 break;
747 case EV_LED:
748 *bit = input->ledbit;
749 *max = LED_MAX;
750 break;
751 }
752}
753
754/**
755 * hid_map_usage_clear - map usage input bits and clear the input bit
756 *
757 * The same as hid_map_usage, except the @c bit is also cleared in supported
758 * bits (@bit).
759 */
760static inline void hid_map_usage_clear(struct hid_input *hidinput,
761 struct hid_usage *usage, unsigned long **bit, int *max,
762 __u8 type, __u16 c)
763{
764 hid_map_usage(hidinput, usage, bit, max, type, c);
765 clear_bit(c, *bit);
766}
767
768/**
Jiri Slabyc500c972008-05-16 11:49:16 +0200769 * hid_parse - parse HW reports
770 *
771 * @hdev: hid device
772 *
773 * Call this from probe after you set up the device (if needed). Your
774 * report_fixup will be called (if non-NULL) after reading raw report from
775 * device before passing it to hid layer for real parsing.
776 */
777static inline int __must_check hid_parse(struct hid_device *hdev)
778{
779 int ret;
780
781 if (hdev->status & HID_STAT_PARSED)
782 return 0;
783
784 ret = hdev->ll_driver->parse(hdev);
785 if (!ret)
786 hdev->status |= HID_STAT_PARSED;
787
788 return ret;
789}
790
791/**
792 * hid_hw_start - start underlaying HW
793 *
794 * @hdev: hid device
Jiri Slaby93c10132008-06-27 00:04:24 +0200795 * @connect_mask: which outputs to connect, see HID_CONNECT_*
Jiri Slabyc500c972008-05-16 11:49:16 +0200796 *
797 * Call this in probe function *after* hid_parse. This will setup HW buffers
798 * and start the device (if not deffered to device open). hid_hw_stop must be
799 * called if this was successfull.
800 */
Jiri Slaby93c10132008-06-27 00:04:24 +0200801static inline int __must_check hid_hw_start(struct hid_device *hdev,
802 unsigned int connect_mask)
Jiri Slabyc500c972008-05-16 11:49:16 +0200803{
Jiri Slaby93c10132008-06-27 00:04:24 +0200804 int ret = hdev->ll_driver->start(hdev);
805 if (ret || !connect_mask)
806 return ret;
807 ret = hid_connect(hdev, connect_mask);
808 if (ret)
809 hdev->ll_driver->stop(hdev);
810 return ret;
Jiri Slabyc500c972008-05-16 11:49:16 +0200811}
812
813/**
814 * hid_hw_stop - stop underlaying HW
815 *
816 * @hdev: hid device
817 *
818 * This is usually called from remove function or from probe when something
819 * failed and hid_hw_start was called already.
820 */
821static inline void hid_hw_stop(struct hid_device *hdev)
822{
Jiri Kosinac4c259b2009-09-15 16:27:45 +0200823 hid_disconnect(hdev);
Jiri Slabyc500c972008-05-16 11:49:16 +0200824 hdev->ll_driver->stop(hdev);
825}
826
Dmitry Torokhov5bea7662010-12-07 23:02:48 -0800827/**
828 * hid_hw_open - signal underlaying HW to start delivering events
829 *
830 * @hdev: hid device
831 *
832 * Tell underlying HW to start delivering events from the device.
833 * This function should be called sometime after successful call
834 * to hid_hiw_start().
835 */
836static inline int __must_check hid_hw_open(struct hid_device *hdev)
837{
838 return hdev->ll_driver->open(hdev);
839}
840
841/**
842 * hid_hw_close - signal underlaying HW to stop delivering events
843 *
844 * @hdev: hid device
845 *
846 * This function indicates that we are not interested in the events
847 * from this device anymore. Delivery of events may or may not stop,
848 * depending on the number of users still outstanding.
849 */
850static inline void hid_hw_close(struct hid_device *hdev)
851{
852 hdev->ll_driver->close(hdev);
853}
854
855/**
856 * hid_hw_power - requests underlying HW to go into given power mode
857 *
858 * @hdev: hid device
859 * @level: requested power level (one of %PM_HINT_* defines)
860 *
861 * This function requests underlying hardware to enter requested power
862 * mode.
863 */
864
865static inline int hid_hw_power(struct hid_device *hdev, int level)
866{
867 return hdev->ll_driver->power ? hdev->ll_driver->power(hdev, level) : 0;
868}
869
Jiri Slaby85cdaf52008-05-16 11:49:15 +0200870void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
871 int interrupt);
872
873extern int hid_generic_init(void);
874extern void hid_generic_exit(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875
Paul Walmsley876b9272007-04-19 14:56:12 +0200876/* HID quirks API */
Paul Walmsley2eb5dc32007-04-19 13:27:04 +0200877u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct);
Paul Walmsley876b9272007-04-19 14:56:12 +0200878int usbhid_quirks_init(char **quirks_param);
879void usbhid_quirks_exit(void);
Jiri Slaby6edfa8d2008-06-27 20:41:02 +0200880void usbhid_set_leds(struct hid_device *hid);
Paul Walmsley2eb5dc32007-04-19 13:27:04 +0200881
Anssi Hannula224ee882006-07-19 01:40:47 -0400882#ifdef CONFIG_HID_PID
883int hid_pidff_init(struct hid_device *hid);
884#else
Jiri Slaby76483cf2008-09-18 12:23:33 +0200885#define hid_pidff_init NULL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886#endif
Jiri Kosina58037eb2007-05-30 15:07:13 +0200887
Joe Perches4291ee32010-12-09 19:29:03 -0800888#define dbg_hid(format, arg...) \
889do { \
890 if (hid_debug) \
891 printk(KERN_DEBUG "%s: " format, __FILE__, ##arg); \
892} while (0)
893
894#define hid_printk(level, hid, fmt, arg...) \
895 dev_printk(level, &(hid)->dev, fmt, ##arg)
896#define hid_emerg(hid, fmt, arg...) \
897 dev_emerg(&(hid)->dev, fmt, ##arg)
898#define hid_crit(hid, fmt, arg...) \
899 dev_crit(&(hid)->dev, fmt, ##arg)
900#define hid_alert(hid, fmt, arg...) \
901 dev_alert(&(hid)->dev, fmt, ##arg)
902#define hid_err(hid, fmt, arg...) \
903 dev_err(&(hid)->dev, fmt, ##arg)
904#define hid_notice(hid, fmt, arg...) \
905 dev_notice(&(hid)->dev, fmt, ##arg)
906#define hid_warn(hid, fmt, arg...) \
907 dev_warn(&(hid)->dev, fmt, ##arg)
908#define hid_info(hid, fmt, arg...) \
909 dev_info(&(hid)->dev, fmt, ##arg)
910#define hid_dbg(hid, fmt, arg...) \
911 dev_dbg(&(hid)->dev, fmt, ##arg)
912
913#endif /* __KERNEL__ */
Jiri Slaby02ae9a12008-05-16 11:49:22 +0200914
Jiri Kosina57d292b2007-10-15 15:17:41 +0200915#endif
Anssi Hannula224ee882006-07-19 01:40:47 -0400916