diff options
Diffstat (limited to 'arch/nios2/include/asm/gpio.h')
| -rw-r--r-- | arch/nios2/include/asm/gpio.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/nios2/include/asm/gpio.h b/arch/nios2/include/asm/gpio.h index cff1dd9..4b21c8f 100644 --- a/arch/nios2/include/asm/gpio.h +++ b/arch/nios2/include/asm/gpio.h @@ -26,6 +26,11 @@ static inline int gpio_request(unsigned gpio, const char *label) return 0; } +static inline int gpio_free(unsigned gpio) +{ + return 0; +} + static inline int gpio_direction_input(unsigned gpio) { writel(1, CONFIG_SYS_GPIO_BASE + (gpio << 2)); @@ -47,12 +52,19 @@ static inline void gpio_set_value(unsigned gpio, int value) { writel(value ? 3 : 2, CONFIG_SYS_GPIO_BASE + (gpio << 2)); } + +static inline int gpio_is_valid(int number) +{ + return ((unsigned)number) < CONFIG_SYS_GPIO_WIDTH; +} #else extern int gpio_request(unsigned gpio, const char *label); +extern int gpio_free(unsigned gpio); extern int gpio_direction_input(unsigned gpio); extern int gpio_direction_output(unsigned gpio, int value); extern int gpio_get_value(unsigned gpio); extern void gpio_set_value(unsigned gpio, int value); +extern int gpio_is_valid(int number); #endif /* CONFIG_SYS_GPIO_BASE */ #endif /* _ASM_NIOS2_GPIO_H_ */ |