/*
* Copyright (c) 2009-2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Copyright 2008 Openmoko, Inc.
* Copyright 2008 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
* http://armlinux.simtec.co.uk/
*
* SAMSUNG - GPIOlib 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/irq.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/ioport.h>
#include <linux/of.h>
#include <linux/slab.h>
#include <linux/of_address.h>
#include <asm/irq.h>
#include <mach/map.h>
#include <mach/regs-gpio.h>
#include <mach/gpio-samsung.h>
#include <plat/cpu.h>
#include <plat/gpio-core.h>
#include <plat/gpio-cfg.h>
#include <plat/gpio-cfg-helpers.h>
#include <plat/pm.h>
int samsung_gpio_setpull_updown(struct samsung_gpio_chip *chip,
unsigned int off, samsung_gpio_pull_t pull)
{
void __iomem *reg = chip->base + 0x08;
int shift = off * 2;
u32 pup;
pup = __raw_readl(reg);
pup &= ~(3 << shift);
pup |= pull << shift;
__raw_writel(pup, reg);
return 0;
}
samsung_gpio_pull_t samsung_gpio_getpull_updown(struct samsung_gpio_chip *chip,
unsigned int off)
{
void __iomem *reg = chip->base + 0x08;
int shift = off * 2;
u32 pup = __raw_readl(reg);
pup >>= shift;
pup &= 0x3;
return (__force samsung_gpio_pull_t)pup;
}
int s3c2443_gpio_setpull(struct samsung_gpio_chip *chip,
unsigned int off, samsung_gpio_pull_t pull)
{
switch (pull) {
case S3C_GPIO_PULL_NONE:
pull = 0x01;
break;
case S3C_GPIO_PULL_UP:
pull = 0x00;
break;
case S3C_GPIO_PULL_DOWN:
pull = 0x02;
break;
}
return samsung_gpio_setpull_updown(chip, off, pull);
}
samsung_gpio_pull_t s3c2443_gpio_getpull(struct samsung_gpio_chip