summaryrefslogtreecommitdiffstats
path: root/drivers/input/serio/i8042-ppcio.h
blob: 2906e1b60c04009a4d16ffb743ecf4f436bb7237 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
#ifndef _I8042_PPCIO_H
#define _I8042_PPCIO_H

/*
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 */

#if defined(CONFIG_WALNUT)

#define I8042_KBD_IRQ 25
#define I8042_AUX_IRQ 26

#define I8042_KBD_PHYS_DESC "walnutps2/serio0"
#define I8042_AUX_PHYS_DESC "walnutps2/serio1"
#define I8042_MUX_PHYS_DESC "walnutps2/serio%d"

extern void *kb_cs;
extern void *kb_data;

#define I8042_COMMAND_REG (*(int *)kb_cs)
#define I8042_DATA_REG (*(int *)kb_data)

static inline int i8042_read_data(void)
{
	return readb(kb_data);
}

static inline int i8042_read_status(void)
{
	return readb(kb_cs);
}

static inline void i8042_write_data(int val)
{
	writeb(val, kb_data);
}

static inline void i8042_write_command(int val)
{
	writeb(val, kb_cs);
}

static inline int i8042_platform_init(void)
{
	i8042_reset = 1;
	return 0;
}

static inline void i8042_platform_exit(void)
{
}

#elif defined(CONFIG_SPRUCE)

#define I8042_KBD_IRQ 22
#define I8042_AUX_IRQ 21

#define I8042_KBD_PHYS_DESC "spruceps2/serio0"
#define I8042_AUX_PHYS_DESC "spruceps2/serio1"
#define I8042_MUX_PHYS_DESC "spruceps2/serio%d"

#define I8042_COMMAND_REG 0xff810000
#define I8042_DATA_REG 0xff810001

static inline int i8042_read_data(void)
{
	unsigned long kbd_data;

	__raw_writel(0x00000088, 0xff500008);
	eieio();

	__raw_writel(0x03000000, 0xff50000c);
	eieio();

	asm volatile("lis     7,0xff88        \n\
		      lswi    6,7,0x8         \n\
		      mr      %0,6"
	              : "=r" (kbd_data) :: "6", "7");

	__raw_writel(0x00000000, 0xff50000c);
	eieio();

	return (unsigned char)(kbd_data >> 24);
}

static inline int i8042_read_status(void)
{
	unsigned long kbd_status;

	__raw_writel(0x00000088, 0xff500008);
	eieio();

	__raw_writel(0x03000000, 0xff50000c);
	eieio();

	asm volatile("lis     7,0xff88        \n\
		      ori     7,7,0x8         \n\
		      lswi    6,7,0x8         \n\
		      mr      %0,6"
		      : "=r" (kbd_status) :: "6", "7");

	__raw_writel(0x00000000, 0xff50000c);
	eieio();

	return (unsigned char)(kbd_status >> 24);
}

static inline void i8042_write_data(int val)
{
	*((unsigned char *)0xff810000) = (char)val;
}

static inline void i8042_write_command(int val)
{
	*((unsigned char *)0xff810001) = (char)val;
}

static inline int i8042_platform_init(void)
{
	i8042_reset = 1;
	return 0;
}

static inline void i8042_platform_exit(void)
{
}

#else

#include "i8042-io.h"

#endif

#endif /* _I8042_PPCIO_H */