gpio: add gpiod_toggle_active_low() (d3a5bcb4) · Commits · 戴 / test

drivers/gpio/gpiolib.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -3363,6 +3363,17 @@ int gpiod_is_active_low(const struct gpio_desc *desc)
		}
		EXPORT_SYMBOL_GPL(gpiod_is_active_low);

		/**
		* gpiod_toggle_active_low - toggle whether a GPIO is active-low or not
		* @desc: the gpio descriptor to change
		*/
		void gpiod_toggle_active_low(struct gpio_desc *desc)
		{
		VALIDATE_DESC_VOID(desc);
		change_bit(FLAG_ACTIVE_LOW, &desc->flags);
		}
		EXPORT_SYMBOL_GPL(gpiod_toggle_active_low);

		/* I/O calls are only valid after configuration completed; the relevant
		* "is this a valid GPIO" error checks should already have been done.
		*

+7 −0

Original line number	Diff line number	Diff line
		@@ -158,6 +158,7 @@ int gpiod_set_raw_array_value_cansleep(unsigned int array_size,

		int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce);
		int gpiod_set_transitory(struct gpio_desc *desc, bool transitory);
		void gpiod_toggle_active_low(struct gpio_desc *desc);

		int gpiod_is_active_low(const struct gpio_desc *desc);
		int gpiod_cansleep(const struct gpio_desc *desc);
		@@ -483,6 +484,12 @@ static inline int gpiod_set_transitory(struct gpio_desc *desc, bool transitory)
		return -ENOSYS;
		}

		static inline void gpiod_toggle_active_low(struct gpio_desc *desc)
		{
		/* GPIO can never have been requested */
		WARN_ON(desc);
		}

		static inline int gpiod_is_active_low(const struct gpio_desc *desc)
		{
		/* GPIO can never have been requested */