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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/include/asm-arm/arch-omap/gpio.h
3 *
4 * OMAP GPIO handling defines and functions
5 *
Tony Lindgren9839c6b2005-09-07 17:20:27 +01006 * Copyright (C) 2003-2005 Nokia Corporation
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 *
John Anthony Kazos Jr121e70b2007-05-09 08:30:57 +02008 * Written by Juha Yrjölä <juha.yrjola@nokia.com>
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 */
25
26#ifndef __ASM_ARCH_OMAP_GPIO_H
27#define __ASM_ARCH_OMAP_GPIO_H
28
Russell King0a5709b2005-11-16 14:51:20 +000029#include <asm/hardware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include <asm/arch/irqs.h>
31#include <asm/io.h>
32
Tony Lindgren9839c6b2005-09-07 17:20:27 +010033#define OMAP_MPUIO_BASE (void __iomem *)0xfffb5000
34
35#ifdef CONFIG_ARCH_OMAP730
36#define OMAP_MPUIO_INPUT_LATCH 0x00
37#define OMAP_MPUIO_OUTPUT 0x02
38#define OMAP_MPUIO_IO_CNTL 0x04
39#define OMAP_MPUIO_KBR_LATCH 0x08
40#define OMAP_MPUIO_KBC 0x0a
41#define OMAP_MPUIO_GPIO_EVENT_MODE 0x0c
42#define OMAP_MPUIO_GPIO_INT_EDGE 0x0e
43#define OMAP_MPUIO_KBD_INT 0x10
44#define OMAP_MPUIO_GPIO_INT 0x12
45#define OMAP_MPUIO_KBD_MASKIT 0x14
46#define OMAP_MPUIO_GPIO_MASKIT 0x16
47#define OMAP_MPUIO_GPIO_DEBOUNCING 0x18
48#define OMAP_MPUIO_LATCH 0x1a
49#else
Linus Torvalds1da177e2005-04-16 15:20:36 -070050#define OMAP_MPUIO_INPUT_LATCH 0x00
51#define OMAP_MPUIO_OUTPUT 0x04
52#define OMAP_MPUIO_IO_CNTL 0x08
53#define OMAP_MPUIO_KBR_LATCH 0x10
54#define OMAP_MPUIO_KBC 0x14
55#define OMAP_MPUIO_GPIO_EVENT_MODE 0x18
56#define OMAP_MPUIO_GPIO_INT_EDGE 0x1c
57#define OMAP_MPUIO_KBD_INT 0x20
58#define OMAP_MPUIO_GPIO_INT 0x24
59#define OMAP_MPUIO_KBD_MASKIT 0x28
60#define OMAP_MPUIO_GPIO_MASKIT 0x2c
61#define OMAP_MPUIO_GPIO_DEBOUNCING 0x30
62#define OMAP_MPUIO_LATCH 0x34
Tony Lindgren9839c6b2005-09-07 17:20:27 +010063#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070064
Syed Mohammed, Khasim5492fb12007-11-29 16:15:11 -080065#define OMAP34XX_NR_GPIOS 6
66
Linus Torvalds1da177e2005-04-16 15:20:36 -070067#define OMAP_MPUIO(nr) (OMAP_MAX_GPIO_LINES + (nr))
68#define OMAP_GPIO_IS_MPUIO(nr) ((nr) >= OMAP_MAX_GPIO_LINES)
69
70#define OMAP_GPIO_IRQ(nr) (OMAP_GPIO_IS_MPUIO(nr) ? \
71 IH_MPUIO_BASE + ((nr) & 0x0f) : \
Tony Lindgren9ad58972005-11-10 14:26:53 +000072 IH_GPIO_BASE + (nr))
Linus Torvalds1da177e2005-04-16 15:20:36 -070073
Linus Torvalds1da177e2005-04-16 15:20:36 -070074extern int omap_gpio_init(void); /* Call from board init only */
75extern int omap_request_gpio(int gpio);
76extern void omap_free_gpio(int gpio);
77extern void omap_set_gpio_direction(int gpio, int is_input);
78extern void omap_set_gpio_dataout(int gpio, int enable);
79extern int omap_get_gpio_datain(int gpio);
Kevin Hilman5eb3bb92007-05-05 11:40:29 -070080extern void omap_set_gpio_debounce(int gpio, int enable);
81extern void omap_set_gpio_debounce_time(int gpio, int enable);
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
David Brownell3c729f12007-02-12 00:53:12 -080083/*-------------------------------------------------------------------------*/
84
85/* wrappers for "new style" GPIO calls. the old OMAP-specfic ones should
86 * eventually be removed (along with this errno.h inclusion), and maybe
87 * gpios should put MPUIOs last too.
88 */
89
90#include <asm/errno.h>
91
92static inline int gpio_request(unsigned gpio, const char *label)
93{
94 return omap_request_gpio(gpio);
95}
96
97static inline void gpio_free(unsigned gpio)
98{
99 omap_free_gpio(gpio);
100}
101
102static inline int __gpio_set_direction(unsigned gpio, int is_input)
103{
104 if (cpu_class_is_omap2()) {
105 if (gpio > OMAP_MAX_GPIO_LINES)
106 return -EINVAL;
107 } else {
108 if (gpio > (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */))
109 return -EINVAL;
110 }
111 omap_set_gpio_direction(gpio, is_input);
112 return 0;
113}
114
115static inline int gpio_direction_input(unsigned gpio)
116{
117 return __gpio_set_direction(gpio, 1);
118}
119
David Brownell28735a72007-03-16 13:38:14 -0800120static inline int gpio_direction_output(unsigned gpio, int value)
David Brownell3c729f12007-02-12 00:53:12 -0800121{
David Brownell28735a72007-03-16 13:38:14 -0800122 omap_set_gpio_dataout(gpio, value);
David Brownell3c729f12007-02-12 00:53:12 -0800123 return __gpio_set_direction(gpio, 0);
124}
125
126static inline int gpio_get_value(unsigned gpio)
127{
128 return omap_get_gpio_datain(gpio);
129}
130
131static inline void gpio_set_value(unsigned gpio, int value)
132{
133 omap_set_gpio_dataout(gpio, value);
134}
135
136#include <asm-generic/gpio.h> /* cansleep wrappers */
137
138static inline int gpio_to_irq(unsigned gpio)
139{
140 return OMAP_GPIO_IRQ(gpio);
141}
142
143static inline int irq_to_gpio(unsigned irq)
144{
145 if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16)))
146 return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES;
147 return irq - IH_GPIO_BASE;
148}
149
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150#endif