diff options
Diffstat (limited to 'include/linux/gpio/driver.h')
| -rw-r--r-- | include/linux/gpio/driver.h | 52 |
1 files changed, 39 insertions, 13 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index d6e38a5008..725e7eca99 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -3,6 +3,8 @@ #define __LINUX_GPIO_DRIVER_H #include <linux/bits.h> +#include <linux/cleanup.h> +#include <linux/err.h> #include <linux/irqchip/chained_irq.h> #include <linux/irqdomain.h> #include <linux/irqhandler.h> @@ -529,8 +531,7 @@ struct gpio_chip { #endif /* CONFIG_OF_GPIO */ }; -extern const char *gpiochip_is_requested(struct gpio_chip *gc, - unsigned int offset); +const char *gpiochip_is_requested(struct gpio_chip *gc, unsigned int offset); /** * for_each_requested_gpio_in_range - iterates over requested GPIOs in a given range @@ -549,9 +550,9 @@ extern const char *gpiochip_is_requested(struct gpio_chip *gc, for_each_requested_gpio_in_range(chip, i, 0, chip->ngpio, label) /* add/remove chips */ -extern int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, - struct lock_class_key *lock_key, - struct lock_class_key *request_key); +int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, + struct lock_class_key *lock_key, + struct lock_class_key *request_key); /** * gpiochip_add_data() - register a gpio_chip @@ -599,20 +600,24 @@ static inline int gpiochip_add(struct gpio_chip *gc) { return gpiochip_add_data(gc, NULL); } -extern void gpiochip_remove(struct gpio_chip *gc); -extern int devm_gpiochip_add_data_with_key(struct device *dev, struct gpio_chip *gc, void *data, - struct lock_class_key *lock_key, - struct lock_class_key *request_key); - -extern struct gpio_chip *gpiochip_find(void *data, - int (*match)(struct gpio_chip *gc, void *data)); +void gpiochip_remove(struct gpio_chip *gc); +int devm_gpiochip_add_data_with_key(struct device *dev, struct gpio_chip *gc, + void *data, struct lock_class_key *lock_key, + struct lock_class_key *request_key); struct gpio_device *gpio_device_find(void *data, int (*match)(struct gpio_chip *gc, void *data)); +struct gpio_device *gpio_device_find_by_label(const char *label); +struct gpio_device *gpio_device_find_by_fwnode(const struct fwnode_handle *fwnode); struct gpio_device *gpio_device_get(struct gpio_device *gdev); void gpio_device_put(struct gpio_device *gdev); +DEFINE_FREE(gpio_device_put, struct gpio_device *, + if (!IS_ERR_OR_NULL(_T)) gpio_device_put(_T)) + +struct device *gpio_device_to_device(struct gpio_device *gdev); + bool gpiochip_line_is_irq(struct gpio_chip *gc, unsigned int offset); int gpiochip_reqres_irq(struct gpio_chip *gc, unsigned int offset); void gpiochip_relres_irq(struct gpio_chip *gc, unsigned int offset); @@ -764,14 +769,23 @@ struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *gc, enum gpiod_flags dflags); void gpiochip_free_own_desc(struct gpio_desc *desc); +struct gpio_desc *gpiochip_get_desc(struct gpio_chip *gc, unsigned int hwnum); +struct gpio_desc * +gpio_device_get_desc(struct gpio_device *gdev, unsigned int hwnum); + +struct gpio_chip *gpio_device_get_chip(struct gpio_device *gdev); + #ifdef CONFIG_GPIOLIB /* lock/unlock as IRQ */ int gpiochip_lock_as_irq(struct gpio_chip *gc, unsigned int offset); void gpiochip_unlock_as_irq(struct gpio_chip *gc, unsigned int offset); - struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc); +struct gpio_device *gpiod_to_gpio_device(struct gpio_desc *desc); + +/* struct gpio_device getters */ +int gpio_device_get_base(struct gpio_device *gdev); #else /* CONFIG_GPIOLIB */ @@ -786,6 +800,18 @@ static inline struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc) return ERR_PTR(-ENODEV); } +static inline int gpio_device_get_base(struct gpio_device *gdev) +{ + WARN_ON(1); + return -ENODEV; +} + +static inline struct gpio_device *gpiod_to_gpio_device(struct gpio_desc *desc) +{ + WARN_ON(1); + return ERR_PTR(-ENODEV); +} + static inline int gpiochip_lock_as_irq(struct gpio_chip *gc, unsigned int offset) { |