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_HAS_I8042)
20#include "i8042-ip22io.h"
21#elif defined(CONFIG_SNI_RM)
22#include "i8042-snirm.h"
23#elif defined(CONFIG_PPC)
24#include "i8042-ppcio.h"
25#elif defined(CONFIG_SPARC)
26#include "i8042-sparcio.h"
27#elif defined(CONFIG_X86) || defined(CONFIG_IA64)
28#include "i8042-x86ia64io.h"
29#elif defined(CONFIG_UNICORE32)
30#include "i8042-unicore32io.h"
31#else
32#include "i8042-io.h"
33#endif
34
35/*
36 * This is in 50us units, the time we wait for the i8042 to react. This
37 * has to be long enough for the i8042 itself to timeout on sending a byte
38 * to a non-existent mouse.
39 */
40
41#define I8042_CTL_TIMEOUT	10000
42
43/*
44 * Status register bits.
45 */
46
47#define I8042_STR_PARITY	0x80
48#define I8042_STR_TIMEOUT	0x40
49#define I8042_STR_AUXDATA	0x20
50#define I8042_STR_KEYLOCK	0x10
51#define I8042_STR_CMDDAT	0x08
52#define I8042_STR_MUXERR	0x04
53#define I8042_STR_IBF		0x02
54#define	I8042_STR_OBF		0x01
55
56/*
57 * Control register bits.
58 */
59
60#define I8042_CTR_KBDINT	0x01
61#define I8042_CTR_AUXINT	0x02
62#define I8042_CTR_IGNKEYLOCK	0x08
63#define I8042_CTR_KBDDIS	0x10
64#define I8042_CTR_AUXDIS	0x20
65#define I8042_CTR_XLATE		0x40
66
67/*
68 * Return codes.
69 */
70
71#define I8042_RET_CTL_TEST	0x55
72
73/*
74 * Expected maximum internal i8042 buffer size. This is used for flushing
75 * the i8042 buffers.
76 */
77
78#define I8042_BUFFER_SIZE	16
79
80/*
81 * Number of AUX ports on controllers supporting active multiplexing
82 * specification
83 */
84
85#define I8042_NUM_MUX_PORTS	4
86
87/*
88 * Debug.
89 */
90
91#ifdef DEBUG
92static unsigned long i8042_start_time;
93#define dbg_init() do { i8042_start_time = jiffies; } while (0)
94#define dbg(format, arg...)							\
95	do {									\
96		if (i8042_debug)						\
97			printk(KERN_DEBUG KBUILD_MODNAME ": [%d] " format,	\
98			       (int) (jiffies - i8042_start_time), ##arg);	\
99	} while (0)
100#else
101#define dbg_init() do { } while (0)
102#define dbg(format, arg...)							\
103	do {									\
104		if (0)								\
105			printk(KERN_DEBUG pr_fmt(format), ##arg);		\
106	} while (0)
107#endif
108
109#endif /* _I8042_H */
110