diff options
| author | Thierry Reding <treding@nvidia.com> | 2017-11-07 19:15:45 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2017-11-08 13:58:19 +0100 |
| commit | c44eafd79be666e7c81d22e215c945b27f2785f7 (patch) | |
| tree | 865222fa8bc1007b289c94cb09a2cd444802f8be /include/linux/gpio | |
| parent | b53b8300bf8ef8acfb604e07d818ead723be6ea3 (diff) | |
gpio: Introduce struct gpio_irq_chip
This new structure will be used to group all fields related to interrupt
handling in a GPIO chip. Doing so will properly namespace these fields
and make it easier to distinguish which fields are used for IRQ support.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/gpio')
| -rw-r--r-- | include/linux/gpio/driver.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index ed04fa2a00a8..36a065521fa0 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -19,6 +19,36 @@ struct module; #ifdef CONFIG_GPIOLIB +#ifdef CONFIG_GPIOLIB_IRQCHIP +/** + * struct gpio_irq_chip - GPIO interrupt controller + */ +struct gpio_irq_chip { + /** + * @domain_ops: + * + * Table of interrupt domain operations for this IRQ chip. + */ + const struct irq_domain_ops *domain_ops; + + /** + * @parent_handler: + * + * The interrupt handler for the GPIO chip's parent interrupts, may be + * NULL if the parent interrupts are nested rather than cascaded. + */ + irq_flow_handler_t parent_handler; + + /** + * @parent_handler_data: + * + * Data associated, and passed to, the handler for the parent + * interrupt. + */ + void *parent_handler_data; +}; +#endif + /** * struct gpio_chip - abstract a GPIO controller * @label: a functional name for the GPIO device, such as a part @@ -176,6 +206,14 @@ struct gpio_chip { bool irq_need_valid_mask; unsigned long *irq_valid_mask; struct lock_class_key *lock_key; + + /** + * @irq: + * + * Integrates interrupt chip functionality with the GPIO chip. Can be + * used to handle IRQs for most practical cases. + */ + struct gpio_irq_chip irq; #endif #if defined(CONFIG_OF_GPIO) |