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abea1127c9
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. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> SVN-Revision: 47449
73 lines
2.1 KiB
Diff
73 lines
2.1 KiB
Diff
Add access to the function2 gpio register. This probably has to be
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converted into a pimux driver later on. This is needed for some setup
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functions on the Arduino Yun.
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--- a/arch/mips/ath79/common.h
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+++ b/arch/mips/ath79/common.h
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@@ -27,6 +27,7 @@ void ath79_ddr_wb_flush(unsigned int reg
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void ath79_gpio_function_enable(u32 mask);
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void ath79_gpio_function_disable(u32 mask);
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void ath79_gpio_function_setup(u32 set, u32 clear);
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+void ath79_gpio_function2_setup(u32 set, u32 clear);
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void ath79_gpio_output_select(unsigned gpio, u8 val);
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int ath79_gpio_direction_select(unsigned gpio, bool oe);
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void ath79_gpio_init(void);
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--- a/arch/mips/ath79/gpio.c
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+++ b/arch/mips/ath79/gpio.c
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@@ -193,6 +193,36 @@ static void __iomem *ath79_gpio_get_func
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return ath79_gpio_base + reg;
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}
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+static void __iomem *ath79_gpio_get_function2_reg(void)
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+{
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+ u32 reg = 0;
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+
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+ if (soc_is_ar71xx() ||
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+ soc_is_ar724x() ||
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+ soc_is_ar913x() ||
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+ soc_is_ar933x())
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+ reg = AR71XX_GPIO_REG_FUNC_2;
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+ else
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+ BUG();
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+
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+ return ath79_gpio_base + reg;
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+}
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+
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+
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+void ath79_gpio_function2_setup(u32 set, u32 clear)
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+{
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+ void __iomem *reg = ath79_gpio_get_function2_reg();
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+ unsigned long flags;
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+
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+ spin_lock_irqsave(&ath79_gpio_lock, flags);
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+
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+ __raw_writel((__raw_readl(reg) & ~clear) | set, reg);
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+ /* flush write */
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+ __raw_readl(reg);
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+
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+ spin_unlock_irqrestore(&ath79_gpio_lock, flags);
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+}
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+
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void ath79_gpio_function_setup(u32 set, u32 clear)
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{
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void __iomem *reg = ath79_gpio_get_function_reg();
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--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
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+++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
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@@ -840,6 +840,7 @@
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#define AR71XX_GPIO_REG_INT_PENDING 0x20
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#define AR71XX_GPIO_REG_INT_ENABLE 0x24
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#define AR71XX_GPIO_REG_FUNC 0x28
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+#define AR71XX_GPIO_REG_FUNC_2 0x30
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#define AR934X_GPIO_REG_OUT_FUNC0 0x2c
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#define AR934X_GPIO_REG_OUT_FUNC1 0x30
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@@ -964,6 +965,8 @@
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#define AR724X_GPIO_FUNC_UART_EN BIT(1)
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#define AR724X_GPIO_FUNC_JTAG_DISABLE BIT(0)
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+#define AR933X_GPIO_FUNC2_JUMPSTART_DISABLE BIT(9)
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+
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#define AR913X_GPIO_FUNC_WMAC_LED_EN BIT(22)
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#define AR913X_GPIO_FUNC_EXP_PORT_CS_EN BIT(21)
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#define AR913X_GPIO_FUNC_I2S_REFCLKEN BIT(20)
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