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linux-next/arch/arm/mach-s3c2412/gpio.c
Kukjin Kim 782d8a3c0b ARM: SAMSUNG: Update the name of regarding Samsung GPIO
According to gpio-samsung.c, this patch updates the name of
regarding Samsung GPIO. Basically the samsung_xxx prefix is
used in gpio-samsung.c instead of s3c_xxx, because unified
name can reduce its complexity.

Note: some s3c_xxx stil remains because it is used widely.
It will be updated next time.

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-09-21 15:07:04 +09:00

63 lines
1.3 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 <linux/gpio.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/regs-gpio.h>
#include <mach/hardware.h>
#include <plat/gpio-core.h>
int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state)
{
struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
unsigned long offs = pin - chip->chip.base;
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(chip->base + 0x0C);
slpcon &= ~(3 << offs);
slpcon |= state << offs;
__raw_writel(slpcon, chip->base + 0x0C);
local_irq_restore(flags);
return 0;
}
EXPORT_SYMBOL(s3c2412_gpio_set_sleepcfg);