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| author | Gabor Juhos <juhosg@openwrt.org> | 2011-11-12 10:54:09 +0000 |
|---|---|---|
| committer | Gabor Juhos <juhosg@openwrt.org> | 2011-11-12 10:54:09 +0000 |
| commit | 856b67cb13e5bdadc8d64a086c4a6274da72dae0 (patch) | |
| tree | 42288ba833de50eb7de9aa9298aae2083ea9e4df /target/linux | |
| parent | 4bafa258d8963feb1032915d28c4c582aab286c9 (diff) | |
| download | upstream-856b67cb13e5bdadc8d64a086c4a6274da72dae0.tar.gz upstream-856b67cb13e5bdadc8d64a086c4a6274da72dae0.tar.bz2 upstream-856b67cb13e5bdadc8d64a086c4a6274da72dae0.zip | |
ar71xx: fix GPIO direction setup for AR934x
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@28974 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/ar71xx/files/arch/mips/ar71xx/gpio.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/gpio.c b/target/linux/ar71xx/files/arch/mips/ar71xx/gpio.c index 10d80817f5..137a018156 100644 --- a/target/linux/ar71xx/files/arch/mips/ar71xx/gpio.c +++ b/target/linux/ar71xx/files/arch/mips/ar71xx/gpio.c @@ -90,6 +90,43 @@ static int ar71xx_gpio_direction_output(struct gpio_chip *chip, 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 = { .label = "ar71xx", .get = ar71xx_gpio_get_value, @@ -181,6 +218,8 @@ void __init ar71xx_gpio_init(void) case AR71XX_SOC_AR9342: case AR71XX_SOC_AR9344: 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; default: |