diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 1651d7f0a303c3e7ea77f3924e83751dd9a41d47..361a09c8138a79330cace80488d333f4b049982b 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1775,6 +1775,43 @@ static const struct irq_domain_ops gpiochip_domain_ops = { .xlate = irq_domain_xlate_twocell, }; +/** + * gpiochip_irq_domain_activate() - Lock a GPIO to be used as an IRQ + * @domain: The IRQ domain used by this IRQ chip + * @data: Outermost irq_data associated with the IRQ + * @reserve: If set, only reserve an interrupt vector instead of assigning one + * + * This function is a wrapper that calls gpiochip_lock_as_irq() and is to be + * used as the activate function for the &struct irq_domain_ops. The host_data + * for the IRQ domain must be the &struct gpio_chip. + */ +int gpiochip_irq_domain_activate(struct irq_domain *domain, + struct irq_data *data, bool reserve) +{ + struct gpio_chip *chip = domain->host_data; + + return gpiochip_lock_as_irq(chip, data->hwirq); +} +EXPORT_SYMBOL_GPL(gpiochip_irq_domain_activate); + +/** + * gpiochip_irq_domain_deactivate() - Unlock a GPIO used as an IRQ + * @domain: The IRQ domain used by this IRQ chip + * @data: Outermost irq_data associated with the IRQ + * + * This function is a wrapper that will call gpiochip_unlock_as_irq() and is to + * be used as the deactivate function for the &struct irq_domain_ops. The + * host_data for the IRQ domain must be the &struct gpio_chip. + */ +void gpiochip_irq_domain_deactivate(struct irq_domain *domain, + struct irq_data *data) +{ + struct gpio_chip *chip = domain->host_data; + + return gpiochip_unlock_as_irq(chip, data->hwirq); +} +EXPORT_SYMBOL_GPL(gpiochip_irq_domain_deactivate); + static int gpiochip_to_irq(struct gpio_chip *chip, unsigned offset) { if (!gpiochip_irqchip_irq_valid(chip, offset)) diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index 07cddbf45186c846b11e39d3ac539d982a46b10e..01497910f02321e0ae7ace79c72fb9a3d82ecf39 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -472,6 +472,11 @@ 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); + void gpiochip_set_chained_irqchip(struct gpio_chip *gpiochip, struct irq_chip *irqchip, unsigned int parent_irq,