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/*
* 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
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