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ar71xx: fix GPIO direction setup for AR934x

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SVN-Revision: 28974
This commit is contained in:
Gabor Juhos 2011-11-12 10:54:09 +00:00
parent 43e993e5f5
commit d8db8e94c8
1 changed files with 39 additions and 0 deletions
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39
target/linux/ar71xx/files/arch/mips/ar71xx/gpio.c
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@ -90,6 +90,43 @@ static int ar71xx_gpio_direction_output(struct gpio_chip *chip,
return 0; return 0;
} }
static int ar934x_gpio_direction_input(struct gpio_chip *chip,
unsigned offset)
{
void __iomem *base = ar71xx_gpio_base;
unsigned long flags;
spin_lock_irqsave(&ar71xx_gpio_lock, flags);
__raw_writel(__raw_readl(base + GPIO_REG_OE) | (1 << offset),
base + GPIO_REG_OE);
spin_unlock_irqrestore(&ar71xx_gpio_lock, flags);
return 0;
}
static int ar934x_gpio_direction_output(struct gpio_chip *chip,
unsigned offset, int value)
{
void __iomem *base = ar71xx_gpio_base;
unsigned long flags;
spin_lock_irqsave(&ar71xx_gpio_lock, flags);
if (value)
__raw_writel(1 << offset, base + GPIO_REG_SET);
else
__raw_writel(1 << offset, base + GPIO_REG_CLEAR);
__raw_writel(__raw_readl(base + GPIO_REG_OE) & ~(1 << offset),
base + GPIO_REG_OE);
spin_unlock_irqrestore(&ar71xx_gpio_lock, flags);
return 0;
}
static struct gpio_chip ar71xx_gpio_chip = { static struct gpio_chip ar71xx_gpio_chip = {
.label = "ar71xx", .label = "ar71xx",
.get = ar71xx_gpio_get_value, .get = ar71xx_gpio_get_value,
@ -181,6 +218,8 @@ void __init ar71xx_gpio_init(void)
case AR71XX_SOC_AR9342: case AR71XX_SOC_AR9342:
case AR71XX_SOC_AR9344: case AR71XX_SOC_AR9344:
ar71xx_gpio_chip.ngpio = AR934X_GPIO_COUNT; ar71xx_gpio_chip.ngpio = AR934X_GPIO_COUNT;
ar71xx_gpio_chip.direction_input = ar934x_gpio_direction_input;
ar71xx_gpio_chip.direction_output = ar934x_gpio_direction_output;
break; break;
default: default: