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Diffstat (limited to 'target/linux/rb532/files/arch/mips')
-rw-r--r--target/linux/rb532/files/arch/mips/rb500/gpio.c89
1 files changed, 64 insertions, 25 deletions
diff --git a/target/linux/rb532/files/arch/mips/rb500/gpio.c b/target/linux/rb532/files/arch/mips/rb500/gpio.c
index 9e19a6336..f7c417355 100644
--- a/target/linux/rb532/files/arch/mips/rb500/gpio.c
+++ b/target/linux/rb532/files/arch/mips/rb500/gpio.c
@@ -39,11 +39,11 @@
#include <asm/rc32434/rb.h>
-#define GPIO_BADDR 0xb8050000
+#define GPIO_BADDR 0x18050000
static volatile unsigned char *devCtl3Base;
static unsigned char latchU5State;
-static spinlock_t clu5Lock = SPIN_LOCK_UNLOCKED;
+static spinlock_t clu5Lock;
struct rb500_gpio_reg __iomem *rb500_gpio_reg0;
EXPORT_SYMBOL(rb500_gpio_reg0);
@@ -73,7 +73,6 @@ void set434Reg(unsigned regOffs, unsigned bit, unsigned len, unsigned val)
*(volatile unsigned *) (IDT434_REG_BASE + regOffs) = data;
spin_unlock_irqrestore(&clu5Lock, flags);
}
-
EXPORT_SYMBOL(set434Reg);
void changeLatchU5(unsigned char orMask, unsigned char nandMask)
@@ -89,66 +88,105 @@ void changeLatchU5(unsigned char orMask, unsigned char nandMask)
*devCtl3Base = latchU5State;
spin_unlock_irqrestore(&clu5Lock, flags);
}
-
EXPORT_SYMBOL(changeLatchU5);
unsigned char getLatchU5State(void)
{
return latchU5State;
}
-
EXPORT_SYMBOL(getLatchU5State);
int rb500_gpio_get_value(unsigned gpio)
{
- u32 reg;
-
- reg = readl(&rb500_gpio_reg0->gpiod);
- return (reg & (1 << gpio));
+ return readl(&rb500_gpio_reg0->gpiod) & (1 << gpio);
}
-
EXPORT_SYMBOL(rb500_gpio_get_value);
void rb500_gpio_set_value(unsigned gpio, int value)
{
- u32 reg;
+ unsigned tmp;
- reg = (u32)&rb500_gpio_reg0->gpiod;
+ tmp = readl(&rb500_gpio_reg0->gpiod) & ~(1 << gpio);
+ if (value)
+ tmp |= 1 << gpio;
- writel(value, (void *)(reg & (1 << gpio)));
+ writel(tmp, (void *)&rb500_gpio_reg0->gpiod);
}
-
EXPORT_SYMBOL(rb500_gpio_set_value);
int rb500_gpio_direction_input(unsigned gpio)
{
- u32 reg;
-
- reg = (u32)&rb500_gpio_reg0->gpiocfg;
- writel(0, (void *)(reg & (1 << gpio)));
+ writel(readl(&rb500_gpio_reg0->gpiocfg) | (1 << gpio), (void *)&rb500_gpio_reg0->gpiocfg);
return 0;
}
-
EXPORT_SYMBOL(rb500_gpio_direction_input);
int rb500_gpio_direction_output(unsigned gpio, int value)
{
- u32 reg;
+ gpio_set_value(gpio, value);
+ writel(readl(&rb500_gpio_reg0->gpiocfg) & ~(1 << gpio), (void *)&rb500_gpio_reg0->gpiocfg);
- reg = (u32)&rb500_gpio_reg0->gpiocfg;
+ return 0;
+}
+EXPORT_SYMBOL(rb500_gpio_direction_output);
+
+void rb500_gpio_set_int_level(unsigned gpio, int value)
+{
+ unsigned tmp;
+
+ tmp = readl(&rb500_gpio_reg0->gpioilevel) & ~(1 << gpio);
if (value)
- writel(1, (void *)(reg & (1 << gpio)));
+ tmp |= 1 << gpio;
+ writel(tmp, (void *)&rb500_gpio_reg0->gpioilevel);
+}
+EXPORT_SYMBOL(rb500_gpio_set_int_level);
- return 0;
+int rb500_gpio_get_int_level(unsigned gpio)
+{
+ return readl(&rb500_gpio_reg0->gpioilevel) & (1 << gpio);
}
+EXPORT_SYMBOL(rb500_gpio_get_int_level);
-EXPORT_SYMBOL(rb500_gpio_direction_output);
+void rb500_gpio_set_int_status(unsigned gpio, int value)
+{
+ unsigned tmp;
+
+ tmp = readl(&rb500_gpio_reg0->gpioistat);
+ if (value)
+ tmp |= 1 << gpio;
+ writel(tmp, (void *)&rb500_gpio_reg0->gpioistat);
+}
+EXPORT_SYMBOL(rb500_gpio_set_int_status);
+
+int rb500_gpio_get_int_status(unsigned gpio)
+{
+ return readl(&rb500_gpio_reg0->gpioistat) & (1 << gpio);
+}
+EXPORT_SYMBOL(rb500_gpio_get_int_status);
+
+void rb500_gpio_set_func(unsigned gpio, int value)
+{
+ unsigned tmp;
+
+ tmp = readl(&rb500_gpio_reg0->gpiofunc);
+ if (value)
+ tmp |= 1 << gpio;
+ writel(tmp, (void *)&rb500_gpio_reg0->gpiofunc);
+}
+EXPORT_SYMBOL(rb500_gpio_set_func);
+
+int rb500_gpio_get_func(unsigned gpio)
+{
+ return readl(&rb500_gpio_reg0->gpiofunc) & (1 << gpio);
+}
+EXPORT_SYMBOL(rb500_gpio_get_func);
int __init rb500_gpio_init(void)
{
rb500_gpio_reg0 = ioremap_nocache(rb500_gpio_reg0_res[0].start,
- rb500_gpio_reg0_res[0].end - rb500_gpio_reg0_res[0].start);
+ rb500_gpio_reg0_res[0].end -
+ rb500_gpio_reg0_res[0].start);
if (!rb500_gpio_reg0) {
printk(KERN_ERR "rb500: cannot remap GPIO register 0\n");
@@ -157,3 +195,4 @@ int __init rb500_gpio_init(void)
return 0;
}
+arch_initcall(rb500_gpio_init);