1 #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
10 #include <linux/types.h>
11
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
34 /*
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
58 struct serio;
59
60 #if defined(CONFIG_SERIO_I8042) || defined(CONFIG_SERIO_I8042_MODULE)
61
62 void i8042_lock_chip(void);
63 void i8042_unlock_chip(void);
64 int i8042_command(unsigned char *param, int command);
65 int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
66 struct serio *serio));
67 int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
68 struct serio *serio));
69
70 #else
71
i8042_lock_chip(void)72 static inline void i8042_lock_chip(void)
73 {
74 }
75
i8042_unlock_chip(void)76 static inline void i8042_unlock_chip(void)
77 {
78 }
79
i8042_command(unsigned char * param,int command)80 static inline int i8042_command(unsigned char *param, int command)
81 {
82 return -ENODEV;
83 }
84
i8042_install_filter(bool (* filter)(unsigned char data,unsigned char str,struct serio * serio))85 static inline int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
86 struct serio *serio))
87 {
88 return -ENODEV;
89 }
90
i8042_remove_filter(bool (* filter)(unsigned char data,unsigned char str,struct serio * serio))91 static inline int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
92 struct serio *serio))
93 {
94 return -ENODEV;
95 }
96
97 #endif
98
99 #endif
100