diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 12472b84a71c..b453193154ae 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1909,7 +1909,9 @@ static int gpiochip_add_irqchip(struct gpio_chip *gpiochip, type = IRQ_TYPE_NONE; } - gpiochip->to_irq = gpiochip_to_irq; + if (!gpiochip->to_irq) + gpiochip->to_irq = gpiochip_to_irq; + gpiochip->irq.default_type = type; gpiochip->irq.lock_key = lock_key; gpiochip->irq.request_key = request_key; @@ -1919,9 +1921,14 @@ static int gpiochip_add_irqchip(struct gpio_chip *gpiochip, else ops = &gpiochip_domain_ops; - gpiochip->irq.domain = irq_domain_add_simple(np, gpiochip->ngpio, - gpiochip->irq.first, - ops, gpiochip); + if (gpiochip->irq.parent_domain) + gpiochip->irq.domain = irq_domain_add_hierarchy(gpiochip->irq.parent_domain, + 0, gpiochip->ngpio, + np, ops, gpiochip); + else + gpiochip->irq.domain = irq_domain_add_simple(np, gpiochip->ngpio, + gpiochip->irq.first, + ops, gpiochip); if (!gpiochip->irq.domain) return -EINVAL; diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index a4d5eb37744a..01106d1f7200 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -47,6 +47,12 @@ struct gpio_irq_chip { */ const struct irq_domain_ops *domain_ops; + /** + * @parent_domain: + * + */ + struct irq_domain *parent_domain; + /** * @handler: *