1#ifndef _I8042_H
2#define _I8042_H
3
4
5/*
6 *  Copyright (c) 1999-2002 Vojtech Pavlik
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 as published by
10 * the Free Software Foundation.
11 */
12
13/*
14 * Arch-dependent inline functions and defines.
15 */
16
17#if defined(CONFIG_MACH_JAZZ)
18#include "i8042-jazzio.h"
19#elif defined(CONFIG_SGI_IP22)
20#include "i8042-ip22io.h"
21#elif defined(CONFIG_PPC)
22#include "i8042-ppcio.h"
23#elif defined(CONFIG_SPARC)
24#include "i8042-sparcio.h"
25#elif defined(CONFIG_X86) || defined(CONFIG_IA64)
26#include "i8042-x86ia64io.h"
27#else
28#include "i8042-io.h"
29#endif
30
31/*
32 * This is in 50us units, the time we wait for the i8042 to react. This
33 * has to be long enough for the i8042 itself to timeout on sending a byte
34 * to a non-existent mouse.
35 */
36
37#define I8042_CTL_TIMEOUT	10000
38
39/*
40 * Status register bits.
41 */
42
43#define I8042_STR_PARITY	0x80
44#define I8042_STR_TIMEOUT	0x40
45#define I8042_STR_AUXDATA	0x20
46#define I8042_STR_KEYLOCK	0x10
47#define I8042_STR_CMDDAT	0x08
48#define I8042_STR_MUXERR	0x04
49#define I8042_STR_IBF		0x02
50#define	I8042_STR_OBF		0x01
51
52/*
53 * Control register bits.
54 */
55
56#define I8042_CTR_KBDINT	0x01
57#define I8042_CTR_AUXINT	0x02
58#define I8042_CTR_IGNKEYLOCK	0x08
59#define I8042_CTR_KBDDIS	0x10
60#define I8042_CTR_AUXDIS	0x20
61#define I8042_CTR_XLATE		0x40
62
63/*
64 * Commands.
65 */
66
67#define I8042_CMD_CTL_RCTR	0x0120
68#define I8042_CMD_CTL_WCTR	0x1060
69#define I8042_CMD_CTL_TEST	0x01aa
70
71#define I8042_CMD_KBD_DISABLE	0x00ad
72#define I8042_CMD_KBD_ENABLE	0x00ae
73#define I8042_CMD_KBD_TEST	0x01ab
74#define I8042_CMD_KBD_LOOP	0x11d2
75
76#define I8042_CMD_AUX_DISABLE	0x00a7
77#define I8042_CMD_AUX_ENABLE	0x00a8
78#define I8042_CMD_AUX_TEST	0x01a9
79#define I8042_CMD_AUX_SEND	0x10d4
80#define I8042_CMD_AUX_LOOP	0x11d3
81
82#define I8042_CMD_MUX_PFX	0x0090
83#define I8042_CMD_MUX_SEND	0x1090
84
85/*
86 * Return codes.
87 */
88
89#define I8042_RET_CTL_TEST	0x55
90
91/*
92 * Expected maximum internal i8042 buffer size. This is used for flushing
93 * the i8042 buffers.
94 */
95
96#define I8042_BUFFER_SIZE	16
97
98/*
99 * Number of AUX ports on controllers supporting active multiplexing
100 * specification
101 */
102
103#define I8042_NUM_MUX_PORTS	4
104
105/*
106 * Debug.
107 */
108
109#ifdef DEBUG
110static unsigned long i8042_start_time;
111#define dbg_init() do { i8042_start_time = jiffies; } while (0)
112#define dbg(format, arg...) 							\
113	do { 									\
114		if (i8042_debug)						\
115			printk(KERN_DEBUG __FILE__ ": " format " [%d]\n" ,	\
116	 			## arg, (int) (jiffies - i8042_start_time));	\
117	} while (0)
118#else
119#define dbg_init() do { } while (0)
120#define dbg(format, arg...) do {} while (0)
121#endif
122
123#endif /* _I8042_H */
124