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Márton Németh553a05b2007-10-22 00:56:52 -04001#ifndef _LINUX_I8042_H
2#define _LINUX_I8042_H
3
4/*
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
8 */
9
Dmitry Torokhov181d6832009-09-16 01:06:43 -070010#include <linux/types.h>
Márton Németh553a05b2007-10-22 00:56:52 -040011
12/*
13 * Standard commands.
14 */
15
16#define I8042_CMD_CTL_RCTR 0x0120
17#define I8042_CMD_CTL_WCTR 0x1060
18#define I8042_CMD_CTL_TEST 0x01aa
19
20#define I8042_CMD_KBD_DISABLE 0x00ad
21#define I8042_CMD_KBD_ENABLE 0x00ae
22#define I8042_CMD_KBD_TEST 0x01ab
23#define I8042_CMD_KBD_LOOP 0x11d2
24
25#define I8042_CMD_AUX_DISABLE 0x00a7
26#define I8042_CMD_AUX_ENABLE 0x00a8
27#define I8042_CMD_AUX_TEST 0x01a9
28#define I8042_CMD_AUX_SEND 0x10d4
29#define I8042_CMD_AUX_LOOP 0x11d3
30
31#define I8042_CMD_MUX_PFX 0x0090
32#define I8042_CMD_MUX_SEND 0x1090
33
Andrey Moiseev1ea4c162013-08-25 22:51:15 -070034/*
35 * Status register bits.
36 */
37
38#define I8042_STR_PARITY 0x80
39#define I8042_STR_TIMEOUT 0x40
40#define I8042_STR_AUXDATA 0x20
41#define I8042_STR_KEYLOCK 0x10
42#define I8042_STR_CMDDAT 0x08
43#define I8042_STR_MUXERR 0x04
44#define I8042_STR_IBF 0x02
45#define I8042_STR_OBF 0x01
46
47/*
48 * Control register bits.
49 */
50
51#define I8042_CTR_KBDINT 0x01
52#define I8042_CTR_AUXINT 0x02
53#define I8042_CTR_IGNKEYLOCK 0x08
54#define I8042_CTR_KBDDIS 0x10
55#define I8042_CTR_AUXDIS 0x20
56#define I8042_CTR_XLATE 0x40
57
Dmitry Torokhov181d6832009-09-16 01:06:43 -070058struct serio;
59
60#if defined(CONFIG_SERIO_I8042) || defined(CONFIG_SERIO_I8042_MODULE)
61
62void i8042_lock_chip(void);
63void i8042_unlock_chip(void);
Márton Németh553a05b2007-10-22 00:56:52 -040064int i8042_command(unsigned char *param, int command);
Dmitry Torokhov181d6832009-09-16 01:06:43 -070065bool i8042_check_port_owner(const struct serio *);
Matthew Garrett967c9ef2009-12-11 22:00:57 -080066int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
67 struct serio *serio));
68int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
69 struct serio *serio));
Dmitry Torokhov181d6832009-09-16 01:06:43 -070070
71#else
72
Feng Tangc59690f2010-06-30 00:53:53 -070073static inline void i8042_lock_chip(void)
Dmitry Torokhov181d6832009-09-16 01:06:43 -070074{
75}
76
Feng Tangc59690f2010-06-30 00:53:53 -070077static inline void i8042_unlock_chip(void)
Dmitry Torokhov181d6832009-09-16 01:06:43 -070078{
79}
80
Feng Tangc59690f2010-06-30 00:53:53 -070081static inline int i8042_command(unsigned char *param, int command)
Dmitry Torokhov181d6832009-09-16 01:06:43 -070082{
Matthew Garrett967c9ef2009-12-11 22:00:57 -080083 return -ENODEV;
Dmitry Torokhov181d6832009-09-16 01:06:43 -070084}
85
Feng Tangc59690f2010-06-30 00:53:53 -070086static inline bool i8042_check_port_owner(const struct serio *serio)
Dmitry Torokhov181d6832009-09-16 01:06:43 -070087{
88 return false;
89}
90
Feng Tangc59690f2010-06-30 00:53:53 -070091static inline int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
Matthew Garrett967c9ef2009-12-11 22:00:57 -080092 struct serio *serio))
93{
94 return -ENODEV;
95}
96
Feng Tangc59690f2010-06-30 00:53:53 -070097static inline int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
Matthew Garrett967c9ef2009-12-11 22:00:57 -080098 struct serio *serio))
99{
100 return -ENODEV;
101}
102
Dmitry Torokhov181d6832009-09-16 01:06:43 -0700103#endif
Márton Németh553a05b2007-10-22 00:56:52 -0400104
105#endif