diff options
Diffstat (limited to 'target/linux/ar71xx/patches-4.4/820-MIPS-ath79-add_gpio_function2_setup.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-4.4/820-MIPS-ath79-add_gpio_function2_setup.patch | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-4.4/820-MIPS-ath79-add_gpio_function2_setup.patch b/target/linux/ar71xx/patches-4.4/820-MIPS-ath79-add_gpio_function2_setup.patch new file mode 100644 index 0000000000..b21da96355 --- /dev/null +++ b/target/linux/ar71xx/patches-4.4/820-MIPS-ath79-add_gpio_function2_setup.patch @@ -0,0 +1,67 @@ +Add access to the function2 gpio register. This probably has to be +converted into a pimux driver later on. This is needed for some setup +functions on the Arduino Yun. + +--- a/arch/mips/ath79/common.h ++++ b/arch/mips/ath79/common.h +@@ -28,6 +28,7 @@ void ath79_ddr_wb_flush(unsigned int reg + 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_function2_setup(u32 set, u32 clear); + void ath79_gpio_output_select(unsigned gpio, u8 val); + int ath79_gpio_direction_select(unsigned gpio, bool oe); + void ath79_gpio_init(void); +--- a/arch/mips/ath79/gpio.c ++++ b/arch/mips/ath79/gpio.c +@@ -42,6 +42,31 @@ static void __iomem *ath79_gpio_get_func + return ath79_gpio_base + reg; + } + ++static void __iomem *ath79_gpio_get_function2_reg(void) ++{ ++ u32 reg = 0; ++ ++ if (soc_is_ar71xx() || ++ soc_is_ar724x() || ++ soc_is_ar913x() || ++ soc_is_ar933x()) ++ reg = AR71XX_GPIO_REG_FUNC_2; ++ else ++ BUG(); ++ ++ return ath79_gpio_base + reg; ++} ++ ++ ++void ath79_gpio_function2_setup(u32 set, u32 clear) ++{ ++ void __iomem *reg = ath79_gpio_get_function2_reg(); ++ ++ __raw_writel((__raw_readl(reg) & ~clear) | set, reg); ++ /* flush write */ ++ __raw_readl(reg); ++} ++ + void ath79_gpio_function_setup(u32 set, u32 clear) + { + void __iomem *reg = ath79_gpio_get_function_reg(); +--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h ++++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h +@@ -847,6 +847,7 @@ + #define AR71XX_GPIO_REG_INT_PENDING 0x20 + #define AR71XX_GPIO_REG_INT_ENABLE 0x24 + #define AR71XX_GPIO_REG_FUNC 0x28 ++#define AR71XX_GPIO_REG_FUNC_2 0x30 + + #define AR934X_GPIO_REG_OUT_FUNC0 0x2c + #define AR934X_GPIO_REG_OUT_FUNC1 0x30 +@@ -971,6 +972,8 @@ + #define AR724X_GPIO_FUNC_UART_EN BIT(1) + #define AR724X_GPIO_FUNC_JTAG_DISABLE BIT(0) + ++#define AR933X_GPIO_FUNC2_JUMPSTART_DISABLE BIT(9) ++ + #define AR913X_GPIO_FUNC_WMAC_LED_EN BIT(22) + #define AR913X_GPIO_FUNC_EXP_PORT_CS_EN BIT(21) + #define AR913X_GPIO_FUNC_I2S_REFCLKEN BIT(20) |