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/* linux/arch/arm/mach-s3c2412/gpio.c
*
* Copyright (c) 2007 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* http://armlinux.simtec.co.uk/.
*
* S3C2412/S3C2413 specific GPIO support
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/regs-gpio.h>
#include <mach/hardware.h>
int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state)
{
void __iomem *base = S3C24XX_GPIO_BASE(pin);
unsigned long offs = S3C2410_GPIO_OFFSET(pin);
unsigned long flags;
unsigned long slpcon;
offs *= 2;
if (pin < S3C2410_GPB(0))
return -EINVAL;
if (pin >= S3C2410_GPF(0) &&
pin <= S3C2410_GPG(16))
return -EINVAL;
if (pin > S3C2410_GPH(16))
return -EINVAL;
local_irq_save(flags);
slpcon = __raw_readl(base + 0x0C);
slpcon &= ~(3 << offs);
slpcon |= state << offs;
__raw_writel(slpcon, base + 0x0C);
local_irq_restore(flags);
return 0;
}
EXPORT_SYMBOL(s3c2412_gpio_set_sleepcfg);
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