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- --- a/arch/mips/ath79/common.h
- +++ b/arch/mips/ath79/common.h
- @@ -27,6 +27,7 @@ void ath79_ddr_ctrl_init(void);
- void ath79_gpio_function_enable(u32 mask);
- void ath79_gpio_function_disable(u32 mask);
- void ath79_gpio_function_setup(u32 set, u32 clear);
- +void ath79_gpio_output_select(unsigned gpio, u8 val);
- void ath79_gpio_init(void);
-
- #endif /* __ATH79_COMMON_H */
- --- a/arch/mips/ath79/gpio.c
- +++ b/arch/mips/ath79/gpio.c
- @@ -57,3 +57,26 @@ void ath79_gpio_function_disable(u32 mas
- {
- ath79_gpio_function_setup(0, mask);
- }
- +
- +void __init ath79_gpio_output_select(unsigned gpio, u8 val)
- +{
- + void __iomem *base = ath79_gpio_base;
- + unsigned int reg;
- + u32 t, s;
- +
- + BUG_ON(!soc_is_ar934x());
- +
- + if (gpio >= AR934X_GPIO_COUNT)
- + return;
- +
- + reg = AR934X_GPIO_REG_OUT_FUNC0 + 4 * (gpio / 4);
- + s = 8 * (gpio % 4);
- +
- + t = __raw_readl(base + reg);
- + t &= ~(0xff << s);
- + t |= val << s;
- + __raw_writel(t, base + reg);
- +
- + /* flush write */
- + (void) __raw_readl(base + reg);
- +}
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