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Diffstat (limited to 'arch/mips/include/asm/mach-au1x00/gpio-au1000.h')
-rw-r--r--arch/mips/include/asm/mach-au1x00/gpio-au1000.h211
1 files changed, 38 insertions, 173 deletions
diff --git a/arch/mips/include/asm/mach-au1x00/gpio-au1000.h b/arch/mips/include/asm/mach-au1x00/gpio-au1000.h
index 796afd051c35..d820b481ac56 100644
--- a/arch/mips/include/asm/mach-au1x00/gpio-au1000.h
+++ b/arch/mips/include/asm/mach-au1x00/gpio-au1000.h
@@ -25,20 +25,20 @@
#define MAKE_IRQ(intc, off) (AU1000_INTC##intc##_INT_BASE + (off))
/* GPIO1 registers within SYS_ area */
-#define SYS_TRIOUTRD 0x100
-#define SYS_TRIOUTCLR 0x100
-#define SYS_OUTPUTRD 0x108
-#define SYS_OUTPUTSET 0x108
-#define SYS_OUTPUTCLR 0x10C
-#define SYS_PINSTATERD 0x110
-#define SYS_PININPUTEN 0x110
+#define AU1000_SYS_TRIOUTRD 0x100
+#define AU1000_SYS_TRIOUTCLR 0x100
+#define AU1000_SYS_OUTPUTRD 0x108
+#define AU1000_SYS_OUTPUTSET 0x108
+#define AU1000_SYS_OUTPUTCLR 0x10C
+#define AU1000_SYS_PINSTATERD 0x110
+#define AU1000_SYS_PININPUTEN 0x110
/* register offsets within GPIO2 block */
-#define GPIO2_DIR 0x00
-#define GPIO2_OUTPUT 0x08
-#define GPIO2_PINSTATE 0x0C
-#define GPIO2_INTENABLE 0x10
-#define GPIO2_ENABLE 0x14
+#define AU1000_GPIO2_DIR 0x00
+#define AU1000_GPIO2_OUTPUT 0x08
+#define AU1000_GPIO2_PINSTATE 0x0C
+#define AU1000_GPIO2_INTENABLE 0x10
+#define AU1000_GPIO2_ENABLE 0x14
struct gpio;
@@ -217,26 +217,21 @@ static inline int au1200_irq_to_gpio(int irq)
*/
static inline void alchemy_gpio1_set_value(int gpio, int v)
{
- void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_SYS_PHYS_ADDR);
unsigned long mask = 1 << (gpio - ALCHEMY_GPIO1_BASE);
- unsigned long r = v ? SYS_OUTPUTSET : SYS_OUTPUTCLR;
- __raw_writel(mask, base + r);
- wmb();
+ unsigned long r = v ? AU1000_SYS_OUTPUTSET : AU1000_SYS_OUTPUTCLR;
+ alchemy_wrsys(mask, r);
}
static inline int alchemy_gpio1_get_value(int gpio)
{
- void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_SYS_PHYS_ADDR);
unsigned long mask = 1 << (gpio - ALCHEMY_GPIO1_BASE);
- return __raw_readl(base + SYS_PINSTATERD) & mask;
+ return alchemy_rdsys(AU1000_SYS_PINSTATERD) & mask;
}
static inline int alchemy_gpio1_direction_input(int gpio)
{
- void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_SYS_PHYS_ADDR);
unsigned long mask = 1 << (gpio - ALCHEMY_GPIO1_BASE);
- __raw_writel(mask, base + SYS_TRIOUTCLR);
- wmb();
+ alchemy_wrsys(mask, AU1000_SYS_TRIOUTCLR);
return 0;
}
@@ -271,6 +266,17 @@ static inline int alchemy_gpio1_to_irq(int gpio)
return -ENXIO;
}
+/* On Au1000, Au1500 and Au1100 GPIOs won't work as inputs before
+ * SYS_PININPUTEN is written to at least once. On Au1550/Au1200/Au1300 this
+ * register enables use of GPIOs as wake source.
+ */
+static inline void alchemy_gpio1_input_enable(void)
+{
+ void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_SYS_PHYS_ADDR);
+ __raw_writel(0, base + 0x110); /* the write op is key */
+ wmb();
+}
+
/*
* GPIO2 block macros for common linux GPIO functions. The 'gpio'
* parameter must be in range of ALCHEMY_GPIO2_BASE..ALCHEMY_GPIO2_MAX.
@@ -279,13 +285,13 @@ static inline void __alchemy_gpio2_mod_dir(int gpio, int to_out)
{
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR);
unsigned long mask = 1 << (gpio - ALCHEMY_GPIO2_BASE);
- unsigned long d = __raw_readl(base + GPIO2_DIR);
+ unsigned long d = __raw_readl(base + AU1000_GPIO2_DIR);
if (to_out)
d |= mask;
else
d &= ~mask;
- __raw_writel(d, base + GPIO2_DIR);
+ __raw_writel(d, base + AU1000_GPIO2_DIR);
wmb();
}
@@ -294,14 +300,15 @@ static inline void alchemy_gpio2_set_value(int gpio, int v)
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR);
unsigned long mask;
mask = ((v) ? 0x00010001 : 0x00010000) << (gpio - ALCHEMY_GPIO2_BASE);
- __raw_writel(mask, base + GPIO2_OUTPUT);
+ __raw_writel(mask, base + AU1000_GPIO2_OUTPUT);
wmb();
}
static inline int alchemy_gpio2_get_value(int gpio)
{
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR);
- return __raw_readl(base + GPIO2_PINSTATE) & (1 << (gpio - ALCHEMY_GPIO2_BASE));
+ return __raw_readl(base + AU1000_GPIO2_PINSTATE) &
+ (1 << (gpio - ALCHEMY_GPIO2_BASE));
}
static inline int alchemy_gpio2_direction_input(int gpio)
@@ -352,12 +359,12 @@ static inline int alchemy_gpio2_to_irq(int gpio)
static inline void __alchemy_gpio2_mod_int(int gpio2, int en)
{
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR);
- unsigned long r = __raw_readl(base + GPIO2_INTENABLE);
+ unsigned long r = __raw_readl(base + AU1000_GPIO2_INTENABLE);
if (en)
r |= 1 << gpio2;
else
r &= ~(1 << gpio2);
- __raw_writel(r, base + GPIO2_INTENABLE);
+ __raw_writel(r, base + AU1000_GPIO2_INTENABLE);
wmb();
}
@@ -428,15 +435,15 @@ static inline void alchemy_gpio2_disable_int(int gpio2)
/**
* alchemy_gpio2_enable - Activate GPIO2 block.
*
- * The GPIO2 block must be enabled excplicitly to work. On systems
+ * The GPIO2 block must be enabled explicitly to work. On systems
* where this isn't done by the bootloader, this macro can be used.
*/
static inline void alchemy_gpio2_enable(void)
{
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR);
- __raw_writel(3, base + GPIO2_ENABLE); /* reset, clock enabled */
+ __raw_writel(3, base + AU1000_GPIO2_ENABLE); /* reset, clock enabled */
wmb();
- __raw_writel(1, base + GPIO2_ENABLE); /* clock enabled */
+ __raw_writel(1, base + AU1000_GPIO2_ENABLE); /* clock enabled */
wmb();
}
@@ -448,7 +455,7 @@ static inline void alchemy_gpio2_enable(void)
static inline void alchemy_gpio2_disable(void)
{
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR);
- __raw_writel(2, base + GPIO2_ENABLE); /* reset, clock disabled */
+ __raw_writel(2, base + AU1000_GPIO2_ENABLE); /* reset, clock disabled */
wmb();
}
@@ -493,11 +500,6 @@ static inline int alchemy_gpio_is_valid(int gpio)
alchemy_gpio1_is_valid(gpio);
}
-static inline int alchemy_gpio_cansleep(int gpio)
-{
- return 0; /* Alchemy never gets tired */
-}
-
static inline int alchemy_gpio_to_irq(int gpio)
{
return (gpio >= ALCHEMY_GPIO2_BASE) ?
@@ -522,141 +524,4 @@ static inline int alchemy_irq_to_gpio(int irq)
return -ENXIO;
}
-/**********************************************************************/
-
-/* Linux gpio framework integration.
- *
- * 4 use cases of Au1000-Au1200 GPIOS:
- *(1) GPIOLIB=y, ALCHEMY_GPIO_INDIRECT=y:
- * Board must register gpiochips.
- *(2) GPIOLIB=y, ALCHEMY_GPIO_INDIRECT=n:
- * 2 (1 for Au1000) gpio_chips are registered.
- *
- *(3) GPIOLIB=n, ALCHEMY_GPIO_INDIRECT=y:
- * the boards' gpio.h must provide the linux gpio wrapper functions,
- *
- *(4) GPIOLIB=n, ALCHEMY_GPIO_INDIRECT=n:
- * inlinable gpio functions are provided which enable access to the
- * Au1000 gpios only by using the numbers straight out of the data-
- * sheets.
-
- * Cases 1 and 3 are intended for boards which want to provide their own
- * GPIO namespace and -operations (i.e. for example you have 8 GPIOs
- * which are in part provided by spare Au1000 GPIO pins and in part by
- * an external FPGA but you still want them to be accssible in linux
- * as gpio0-7. The board can of course use the alchemy_gpioX_* functions
- * as required).
- */
-
-#ifndef CONFIG_GPIOLIB
-
-#ifdef CONFIG_ALCHEMY_GPIOINT_AU1000
-
-#ifndef CONFIG_ALCHEMY_GPIO_INDIRECT /* case (4) */
-
-static inline int gpio_direction_input(int gpio)
-{
- return alchemy_gpio_direction_input(gpio);
-}
-
-static inline int gpio_direction_output(int gpio, int v)
-{
- return alchemy_gpio_direction_output(gpio, v);
-}
-
-static inline int gpio_get_value(int gpio)
-{
- return alchemy_gpio_get_value(gpio);
-}
-
-static inline void gpio_set_value(int gpio, int v)
-{
- alchemy_gpio_set_value(gpio, v);
-}
-
-static inline int gpio_get_value_cansleep(unsigned gpio)
-{
- return gpio_get_value(gpio);
-}
-
-static inline void gpio_set_value_cansleep(unsigned gpio, int value)
-{
- gpio_set_value(gpio, value);
-}
-
-static inline int gpio_is_valid(int gpio)
-{
- return alchemy_gpio_is_valid(gpio);
-}
-
-static inline int gpio_cansleep(int gpio)
-{
- return alchemy_gpio_cansleep(gpio);
-}
-
-static inline int gpio_to_irq(int gpio)
-{
- return alchemy_gpio_to_irq(gpio);
-}
-
-static inline int irq_to_gpio(int irq)
-{
- return alchemy_irq_to_gpio(irq);
-}
-
-static inline int gpio_request(unsigned gpio, const char *label)
-{
- return 0;
-}
-
-static inline int gpio_request_one(unsigned gpio,
- unsigned long flags, const char *label)
-{
- return 0;
-}
-
-static inline int gpio_request_array(struct gpio *array, size_t num)
-{
- return 0;
-}
-
-static inline void gpio_free(unsigned gpio)
-{
-}
-
-static inline void gpio_free_array(struct gpio *array, size_t num)
-{
-}
-
-static inline int gpio_set_debounce(unsigned gpio, unsigned debounce)
-{
- return -ENOSYS;
-}
-
-static inline int gpio_export(unsigned gpio, bool direction_may_change)
-{
- return -ENOSYS;
-}
-
-static inline int gpio_export_link(struct device *dev, const char *name,
- unsigned gpio)
-{
- return -ENOSYS;
-}
-
-static inline int gpio_sysfs_set_active_low(unsigned gpio, int value)
-{
- return -ENOSYS;
-}
-
-static inline void gpio_unexport(unsigned gpio)
-{
-}
-
-#endif /* !CONFIG_ALCHEMY_GPIO_INDIRECT */
-
-#endif /* CONFIG_ALCHEMY_GPIOINT_AU1000 */
-
-#endif /* !CONFIG_GPIOLIB */
-
#endif /* _ALCHEMY_GPIO_AU1000_H_ */
generated by cgit (git 2.34.1) at 2025-12-26 16:16:40 +0000