android_kernel_motorola_sm6225/arch/arm/mach-s3c2412/gpio.c
Ben Dooks 67d729adc0 [ARM] 4779/1: S3C2412: Add s3c2412_gpio_set_sleepcfg() call
Add s3c2412_gpio_set_sleepcfg() to allow the setting of the sleep
configuration of the GPIO blocks.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-28 13:20:50 +00:00

60 lines
1.2 KiB
C

/* 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 <asm/arch/regs-gpio.h>
#include <asm/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_GPIO_BANKB)
return -EINVAL;
if (pin >= S3C2410_GPIO_BANKF &&
pin <= S3C2410_GPIO_BANKG)
return -EINVAL;
if (pin > (S3C2410_GPIO_BANKH + 32))
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);