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/*
* linux/include/asm-arm/arch-s3c2410/gpio.h
*
* S3C2410 GPIO wrappers for arch-neutral GPIO calls
*
* Written by Philipp Zabel <philipp.zabel@gmail.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_S3C2410_GPIO_H
#define __ASM_ARCH_S3C2410_GPIO_H
#include <asm/irq.h>
#include <asm/hardware.h>
#include <asm/arch/regs-gpio.h>
static inline int gpio_request(unsigned gpio, const char *label)
{
return 0;
}
static inline void gpio_free(unsigned gpio)
{
return;
}
static inline int gpio_direction_input(unsigned gpio)
{
s3c2410_gpio_cfgpin(gpio, S3C2410_GPIO_INPUT);
return 0;
}
static inline int gpio_direction_output(unsigned gpio, int value)
{
s3c2410_gpio_cfgpin(gpio, S3C2410_GPIO_OUTPUT);
/* REVISIT can we write the value first, to avoid glitching? */
s3c2410_gpio_setpin(gpio, value);
return 0;
}
#define gpio_get_value(gpio) s3c2410_gpio_getpin(gpio)
#define gpio_set_value(gpio,value) s3c2410_gpio_setpin(gpio, value)
#include <asm-generic/gpio.h> /* cansleep wrappers */
#ifdef CONFIG_CPU_S3C2400
#define gpio_to_irq(gpio) s3c2400_gpio_getirq(gpio)
#else
#define gpio_to_irq(gpio) s3c2410_gpio_getirq(gpio)
#endif
/* FIXME implement irq_to_gpio() */
#endif
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