summaryrefslogtreecommitdiffstats
path: root/include/asm-arm/arch-omap/gpio.h
blob: 164da09be09550fe8e45b91a8f09687d9b59047c (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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
/*
 * linux/include/asm-arm/arch-omap/gpio.h
 *
 * OMAP GPIO handling defines and functions
 *
 * Copyright (C) 2003-2005 Nokia Corporation
 *
 * Written by Juha Yrjölä <juha.yrjola@nokia.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

#ifndef __ASM_ARCH_OMAP_GPIO_H
#define __ASM_ARCH_OMAP_GPIO_H

#include <asm/hardware.h>
#include <asm/arch/irqs.h>
#include <asm/io.h>

#define OMAP_MPUIO_BASE			(void __iomem *)0xfffb5000

#ifdef CONFIG_ARCH_OMAP730
#define OMAP_MPUIO_INPUT_LATCH		0x00
#define OMAP_MPUIO_OUTPUT		0x02
#define OMAP_MPUIO_IO_CNTL		0x04
#define OMAP_MPUIO_KBR_LATCH		0x08
#define OMAP_MPUIO_KBC			0x0a
#define OMAP_MPUIO_GPIO_EVENT_MODE	0x0c
#define OMAP_MPUIO_GPIO_INT_EDGE	0x0e
#define OMAP_MPUIO_KBD_INT		0x10
#define OMAP_MPUIO_GPIO_INT		0x12
#define OMAP_MPUIO_KBD_MASKIT		0x14
#define OMAP_MPUIO_GPIO_MASKIT		0x16
#define OMAP_MPUIO_GPIO_DEBOUNCING	0x18
#define OMAP_MPUIO_LATCH		0x1a
#else
#define OMAP_MPUIO_INPUT_LATCH		0x00
#define OMAP_MPUIO_OUTPUT		0x04
#define OMAP_MPUIO_IO_CNTL		0x08
#define OMAP_MPUIO_KBR_LATCH		0x10
#define OMAP_MPUIO_KBC			0x14
#define OMAP_MPUIO_GPIO_EVENT_MODE	0x18
#define OMAP_MPUIO_GPIO_INT_EDGE	0x1c
#define OMAP_MPUIO_KBD_INT		0x20
#define OMAP_MPUIO_GPIO_INT		0x24
#define OMAP_MPUIO_KBD_MASKIT		0x28
#define OMAP_MPUIO_GPIO_MASKIT		0x2c
#define OMAP_MPUIO_GPIO_DEBOUNCING	0x30
#define OMAP_MPUIO_LATCH		0x34
#endif

#define OMAP34XX_NR_GPIOS		6

#define OMAP_MPUIO(nr)		(OMAP_MAX_GPIO_LINES + (nr))
#define OMAP_GPIO_IS_MPUIO(nr)	((nr) >= OMAP_MAX_GPIO_LINES)

#define OMAP_GPIO_IRQ(nr)	(OMAP_GPIO_IS_MPUIO(nr) ? \
				 IH_MPUIO_BASE + ((nr) & 0x0f) : \
				 IH_GPIO_BASE + (nr))

extern int omap_gpio_init(void);	/* Call from board init only */
extern int omap_request_gpio(int gpio);
extern void omap_free_gpio(int gpio);
extern void omap_set_gpio_direction(int gpio, int is_input);
extern void omap_set_gpio_dataout(int gpio, int enable);
extern int omap_get_gpio_datain(int gpio);
extern void omap_set_gpio_debounce(int gpio, int enable);
extern void omap_set_gpio_debounce_time(int gpio, int enable);

/*-------------------------------------------------------------------------*/

/* wrappers for "new style" GPIO calls. the old OMAP-specfic ones should
 * eventually be removed (along with this errno.h inclusion), and maybe
 * gpios should put MPUIOs last too.
 */

#include <asm/errno.h>

static inline int gpio_request(unsigned gpio, const char *label)
{
	return omap_request_gpio(gpio);
}

static inline void gpio_free(unsigned gpio)
{
	omap_free_gpio(gpio);
}

static inline int __gpio_set_direction(unsigned gpio, int is_input)
{
	if (cpu_class_is_omap2()) {
		if (gpio > OMAP_MAX_GPIO_LINES)
			return -EINVAL;
	} else {
		if (gpio > (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */))
			return -EINVAL;
	}
	omap_set_gpio_direction(gpio, is_input);
	return 0;
}

static inline int gpio_direction_input(unsigned gpio)
{
	return __gpio_set_direction(gpio, 1);
}

static inline int gpio_direction_output(unsigned gpio, int value)
{
	omap_set_gpio_dataout(gpio, value);
	return __gpio_set_direction(gpio, 0);
}

static inline int gpio_get_value(unsigned gpio)
{
	return omap_get_gpio_datain(gpio);
}

static inline void gpio_set_value(unsigned gpio, int value)
{
	omap_set_gpio_dataout(gpio, value);
}

#include <asm-generic/gpio.h>		/* cansleep wrappers */

static inline int gpio_to_irq(unsigned gpio)
{
	return OMAP_GPIO_IRQ(gpio);
}

static inline int irq_to_gpio(unsigned irq)
{
	if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16)))
		return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES;
	return irq - IH_GPIO_BASE;
}

#endif