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ARM: S3C24XX: Wrapper s3c2410_gpio_setpin and s3c2410_gpio_pullup() 

Change s3c2410_gpio_setpin() and s3c2410_gpio_pullup() to use
the new s3c_ gpio configuration calls until all their users
are converted.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Ben Dooks 2010-05-06 11:21:05 +09:00
parent fb3787470e
commit 31da46d9f1
1 changed files with 19 additions and 28 deletions
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47
arch/arm/plat-s3c24xx/gpio.c
View File

@ -1,6 +1,6 @@
/* linux/arch/arm/plat-s3c24xx/gpio.c
*
* Copyright (c) 2004-2005 Simtec Electronics
* Copyright (c) 2004-2010 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* S3C24XX GPIO support
@ -25,6 +25,7 @@
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/gpio.h>
#include <linux/io.h>
#include <mach/hardware.h>
@ -33,44 +34,34 @@
#include <mach/regs-gpio.h>
/* gpiolib wrappers until these are totally eliminated */
void s3c2410_gpio_pullup(unsigned int pin, unsigned int to)
{
void __iomem *base = S3C24XX_GPIO_BASE(pin);
unsigned long offs = S3C2410_GPIO_OFFSET(pin);
unsigned long flags;
unsigned long up;
int ret;
if (pin < S3C2410_GPIO_BANKB)
return;
WARN_ON(to); /* should be none of these left */
local_irq_save(flags);
if (!to) {
/* if pull is enabled, try first with up, and if that
* fails, try using down */
up = __raw_readl(base + 0x08);
up &= ~(1L << offs);
up |= to << offs;
__raw_writel(up, base + 0x08);
local_irq_restore(flags);
ret = s3c_gpio_setpull(pin, S3C_GPIO_PULL_UP);
if (ret)
s3c_gpio_setpull(pin, S3C_GPIO_PULL_DOWN);
} else {
s3c_gpio_setpull(pin, S3C_GPIO_PULL_NONE);
}
}
EXPORT_SYMBOL(s3c2410_gpio_pullup);
void s3c2410_gpio_setpin(unsigned int pin, unsigned int to)
{
void __iomem *base = S3C24XX_GPIO_BASE(pin);
unsigned long offs = S3C2410_GPIO_OFFSET(pin);
unsigned long flags;
unsigned long dat;
/* do this via gpiolib until all users removed */
local_irq_save(flags);
dat = __raw_readl(base + 0x04);
dat &= ~(1 << offs);
dat |= to << offs;
__raw_writel(dat, base + 0x04);
local_irq_restore(flags);
gpio_request(pin, "temporary");
gpio_set_value(pin, to);
gpio_free(pin);
}
EXPORT_SYMBOL(s3c2410_gpio_setpin);