1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
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)
|
