diff options
Diffstat (limited to 'include/linux/gpio.h')
| -rw-r--r-- | include/linux/gpio.h | 57 |
1 files changed, 46 insertions, 11 deletions
diff --git a/include/linux/gpio.h b/include/linux/gpio.h index b8d0e53a802f..13dfd24d01ab 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -16,14 +16,17 @@ #define GPIOF_OUT_INIT_LOW (GPIOF_DIR_OUT | GPIOF_INIT_LOW) #define GPIOF_OUT_INIT_HIGH (GPIOF_DIR_OUT | GPIOF_INIT_HIGH) +/* Gpio pin is active-low */ +#define GPIOF_ACTIVE_LOW (1 << 2) + /* Gpio pin is open drain */ -#define GPIOF_OPEN_DRAIN (1 << 2) +#define GPIOF_OPEN_DRAIN (1 << 3) /* Gpio pin is open source */ -#define GPIOF_OPEN_SOURCE (1 << 3) +#define GPIOF_OPEN_SOURCE (1 << 4) -#define GPIOF_EXPORT (1 << 4) -#define GPIOF_EXPORT_CHANGEABLE (1 << 5) +#define GPIOF_EXPORT (1 << 5) +#define GPIOF_EXPORT_CHANGEABLE (1 << 6) #define GPIOF_EXPORT_DIR_FIXED (GPIOF_EXPORT) #define GPIOF_EXPORT_DIR_CHANGEABLE (GPIOF_EXPORT | GPIOF_EXPORT_CHANGEABLE) @@ -74,6 +77,15 @@ static inline int irq_to_gpio(unsigned int irq) #endif /* ! CONFIG_ARCH_HAVE_CUSTOM_GPIO_H */ +/* CONFIG_GPIOLIB: bindings for managed devices that want to request gpios */ + +struct device; + +int devm_gpio_request(struct device *dev, unsigned gpio, const char *label); +int devm_gpio_request_one(struct device *dev, unsigned gpio, + unsigned long flags, const char *label); +void devm_gpio_free(struct device *dev, unsigned int gpio); + #else /* ! CONFIG_GPIOLIB */ #include <linux/kernel.h> @@ -205,6 +217,18 @@ static inline int gpio_to_irq(unsigned gpio) return -EINVAL; } +static inline int gpio_lock_as_irq(struct gpio_chip *chip, unsigned int offset) +{ + WARN_ON(1); + return -EINVAL; +} + +static inline void gpio_unlock_as_irq(struct gpio_chip *chip, + unsigned int offset) +{ + WARN_ON(1); +} + static inline int irq_to_gpio(unsigned irq) { /* irq can never have been returned from gpio_to_irq() */ @@ -236,14 +260,25 @@ gpiochip_remove_pin_ranges(struct gpio_chip *chip) WARN_ON(1); } -#endif /* ! CONFIG_GPIOLIB */ +static inline int devm_gpio_request(struct device *dev, unsigned gpio, + const char *label) +{ + WARN_ON(1); + return -EINVAL; +} -struct device; +static inline int devm_gpio_request_one(struct device *dev, unsigned gpio, + unsigned long flags, const char *label) +{ + WARN_ON(1); + return -EINVAL; +} -/* bindings for managed devices that want to request gpios */ -int devm_gpio_request(struct device *dev, unsigned gpio, const char *label); -int devm_gpio_request_one(struct device *dev, unsigned gpio, - unsigned long flags, const char *label); -void devm_gpio_free(struct device *dev, unsigned int gpio); +static inline void devm_gpio_free(struct device *dev, unsigned int gpio) +{ + WARN_ON(1); +} + +#endif /* ! CONFIG_GPIOLIB */ #endif /* __LINUX_GPIO_H */ |