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/*
* arch/arm/plat-iop/gpio.c
* GPIO handling for Intel IOP3xx processors.
*
* Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
*
* 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.
*/
#include <linux/device.h>
#include <asm/hardware/iop3xx.h>
void gpio_line_config(int line, int direction)
{
unsigned long flags;
local_irq_save(flags);
if (direction == GPIO_IN) {
*IOP3XX_GPOE |= 1 << line;
} else if (direction == GPIO_OUT) {
*IOP3XX_GPOE &= ~(1 << line);
}
local_irq_restore(flags);
}
EXPORT_SYMBOL(gpio_line_config);
int gpio_line_get(int line)
{
return !!(*IOP3XX_GPID & (1 << line));
}
EXPORT_SYMBOL(gpio_line_get);
void gpio_line_set(int line, int value)
{
unsigned long flags;
local_irq_save(flags);
if (value == GPIO_LOW) {
*IOP3XX_GPOD &= ~(1 << line);
} else if (value == GPIO_HIGH) {
*IOP3XX_GPOD |= 1 << line;
}
local_irq_restore(flags);
}
EXPORT_SYMBOL(gpio_line_set);
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