diff options
Diffstat (limited to 'include/linux/gpio/driver.h')
| -rw-r--r-- | include/linux/gpio/driver.h | 42 |
1 files changed, 24 insertions, 18 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index 7f75c9a51874..dc75f802e284 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -335,10 +335,12 @@ struct gpio_irq_chip { * (same as GPIO_LINE_DIRECTION_OUT / GPIO_LINE_DIRECTION_IN), * or negative error. It is recommended to always implement this * function, even on input-only or output-only gpio chips. - * @direction_input: configures signal "offset" as input, or returns error - * This can be omitted on input-only or output-only gpio chips. - * @direction_output: configures signal "offset" as output, or returns error - * This can be omitted on input-only or output-only gpio chips. + * @direction_input: configures signal "offset" as input, returns 0 on success + * or a negative error number. This can be omitted on input-only or + * output-only gpio chips. + * @direction_output: configures signal "offset" as output, returns 0 on + * success or a negative error number. This can be omitted on input-only + * or output-only gpio chips. * @get: returns value for signal "offset", 0=low, 1=high, or negative error * @get_multiple: reads values for multiple signals defined by "mask" and * stores them in "bits", returns 0 on success or negative error @@ -550,6 +552,21 @@ DEFINE_CLASS(_gpiochip_for_each_data, const char **label, int *i) /** + * for_each_hwgpio - Iterates over all GPIOs for given chip. + * @_chip: Chip to iterate over. + * @_i: Loop counter. + * @_label: Place to store the address of the label if the GPIO is requested. + * Set to NULL for unused GPIOs. + */ +#define for_each_hwgpio(_chip, _i, _label) \ + for (CLASS(_gpiochip_for_each_data, _data)(&_label, &_i); \ + *_data.i < _chip->ngpio; \ + (*_data.i)++, kfree(*(_data.label)), *_data.label = NULL) \ + if (IS_ERR(*_data.label = \ + gpiochip_dup_line_label(_chip, *_data.i))) {} \ + else + +/** * for_each_requested_gpio_in_range - iterates over requested GPIOs in a given range * @_chip: the chip to query * @_i: loop variable @@ -626,8 +643,9 @@ 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(const void *data, + int (*match)(struct gpio_chip *gc, + const 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); @@ -704,18 +722,6 @@ int bgpio_init(struct gpio_chip *gc, struct device *dev, #define BGPIOF_NO_OUTPUT BIT(5) /* only input */ #define BGPIOF_NO_SET_ON_INPUT BIT(6) -int gpiochip_irq_map(struct irq_domain *d, unsigned int irq, - irq_hw_number_t hwirq); -void gpiochip_irq_unmap(struct irq_domain *d, unsigned int irq); - -int gpiochip_irq_domain_activate(struct irq_domain *domain, - struct irq_data *data, bool reserve); -void gpiochip_irq_domain_deactivate(struct irq_domain *domain, - struct irq_data *data); - -bool gpiochip_irqchip_irq_valid(const struct gpio_chip *gc, - unsigned int offset); - #ifdef CONFIG_GPIOLIB_IRQCHIP int gpiochip_irqchip_add_domain(struct gpio_chip *gc, struct irq_domain *domain); |