diff options
Diffstat (limited to 'include/linux/gpio')
| -rw-r--r-- | include/linux/gpio/consumer.h | 16 | ||||
| -rw-r--r-- | include/linux/gpio/driver.h | 110 |
2 files changed, 80 insertions, 46 deletions
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h index 1c4385a00f88..db2dfbae8edb 100644 --- a/include/linux/gpio/consumer.h +++ b/include/linux/gpio/consumer.h @@ -159,7 +159,6 @@ int gpiod_set_raw_array_value_cansleep(unsigned int array_size, int gpiod_set_config(struct gpio_desc *desc, unsigned long config); int gpiod_set_debounce(struct gpio_desc *desc, unsigned int 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); @@ -494,13 +493,6 @@ static inline int gpiod_set_debounce(struct gpio_desc *desc, unsigned int deboun return -ENOSYS; } -static inline int gpiod_set_transitory(struct gpio_desc *desc, bool transitory) -{ - /* GPIO can never have been requested */ - WARN_ON(desc); - return -ENOSYS; -} - static inline void gpiod_toggle_active_low(struct gpio_desc *desc) { /* GPIO can never have been requested */ @@ -614,8 +606,6 @@ void acpi_dev_remove_driver_gpios(struct acpi_device *adev); int devm_acpi_dev_add_driver_gpios(struct device *dev, const struct acpi_gpio_mapping *gpios); -struct gpio_desc *acpi_get_and_request_gpiod(char *path, unsigned int pin, char *label); - #else /* CONFIG_GPIOLIB && CONFIG_ACPI */ #include <linux/err.h> @@ -633,12 +623,6 @@ static inline int devm_acpi_dev_add_driver_gpios(struct device *dev, return -ENXIO; } -static inline struct gpio_desc *acpi_get_and_request_gpiod(char *path, unsigned int pin, - char *label) -{ - return ERR_PTR(-ENOSYS); -} - #endif /* CONFIG_GPIOLIB && CONFIG_ACPI */ diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index 67b8774eed8f..7f75c9a51874 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> @@ -61,13 +63,6 @@ struct gpio_irq_chip { */ struct irq_domain *domain; - /** - * @domain_ops: - * - * Table of interrupt domain operations for this IRQ chip. - */ - const struct irq_domain_ops *domain_ops; - #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY /** * @fwnode: @@ -536,29 +531,49 @@ struct gpio_chip { #endif /* CONFIG_OF_GPIO */ }; -extern const char *gpiochip_is_requested(struct gpio_chip *gc, - unsigned int offset); +char *gpiochip_dup_line_label(struct gpio_chip *gc, unsigned int offset); + + +struct _gpiochip_for_each_data { + const char **label; + unsigned int *i; +}; + +DEFINE_CLASS(_gpiochip_for_each_data, + struct _gpiochip_for_each_data, + if (*_T.label) kfree(*_T.label), + ({ + struct _gpiochip_for_each_data _data = { label, i }; + *_data.i = 0; + _data; + }), + const char **label, int *i) /** * for_each_requested_gpio_in_range - iterates over requested GPIOs in a given range - * @chip: the chip to query - * @i: loop variable - * @base: first GPIO in the range - * @size: amount of GPIOs to check starting from @base - * @label: label of current GPIO + * @_chip: the chip to query + * @_i: loop variable + * @_base: first GPIO in the range + * @_size: amount of GPIOs to check starting from @base + * @_label: label of current GPIO */ -#define for_each_requested_gpio_in_range(chip, i, base, size, label) \ - for (i = 0; i < size; i++) \ - if ((label = gpiochip_is_requested(chip, base + i)) == NULL) {} else +#define for_each_requested_gpio_in_range(_chip, _i, _base, _size, _label) \ + for (CLASS(_gpiochip_for_each_data, _data)(&_label, &_i); \ + *_data.i < _size; \ + (*_data.i)++, kfree(*(_data.label)), *_data.label = NULL) \ + if ((*_data.label = \ + gpiochip_dup_line_label(_chip, _base + *_data.i)) == NULL) {} \ + else if (IS_ERR(*_data.label)) {} \ + else /* Iterates over all requested GPIO of the given @chip */ #define for_each_requested_gpio(chip, i, label) \ 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 @@ -606,13 +621,23 @@ 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); +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)) -extern struct gpio_chip *gpiochip_find(void *data, - int (*match)(struct gpio_chip *gc, void *data)); +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); @@ -697,7 +722,6 @@ int gpiochip_irqchip_add_domain(struct gpio_chip *gc, #else #include <asm/bug.h> -#include <asm/errno.h> static inline int gpiochip_irqchip_add_domain(struct gpio_chip *gc, struct irq_domain *domain) @@ -765,18 +789,26 @@ 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); -#else /* CONFIG_GPIOLIB */ +/* struct gpio_device getters */ +int gpio_device_get_base(struct gpio_device *gdev); +const char *gpio_device_get_label(struct gpio_device *gdev); -#include <linux/err.h> +#else /* CONFIG_GPIOLIB */ #include <asm/bug.h> @@ -787,6 +819,24 @@ static inline struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc) return ERR_PTR(-ENODEV); } +static inline struct gpio_device *gpiod_to_gpio_device(struct gpio_desc *desc) +{ + WARN_ON(1); + return ERR_PTR(-ENODEV); +} + +static inline int gpio_device_get_base(struct gpio_device *gdev) +{ + WARN_ON(1); + return -ENODEV; +} + +static inline const char *gpio_device_get_label(struct gpio_device *gdev) +{ + WARN_ON(1); + return NULL; +} + static inline int gpiochip_lock_as_irq(struct gpio_chip *gc, unsigned int offset) { |