Commit 9d9c1796 authored by Bartosz Golaszewski's avatar Bartosz Golaszewski
Browse files

gpio: sim: lock GPIOs as interrupts when they are requested 



Use the extended irq_sim interface to supply the simulated interrupt
domain with callbacks allowing the GPIO sim to lock/unlock GPIOs
requested as interrupts.

Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20240624093934.17089-3-brgl@bgdev.pl


Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
parent 011f5837

drivers/gpio/gpio-sim.c

+24 −1
Original line number Diff line number Diff line
@@ -227,6 +227,27 @@ static void gpio_sim_free(struct gpio_chip *gc, unsigned int offset) 
	}

}



static int gpio_sim_irq_requested(struct irq_domain *domain,

				  irq_hw_number_t hwirq, void *data)

{

	struct gpio_sim_chip *chip = data;



	return gpiochip_lock_as_irq(&chip->gc, hwirq);

}



static void gpio_sim_irq_released(struct irq_domain *domain,

				  irq_hw_number_t hwirq, void *data)

{

	struct gpio_sim_chip *chip = data;



	gpiochip_unlock_as_irq(&chip->gc, hwirq);

}



static const struct irq_sim_ops gpio_sim_irq_sim_ops = {

	.irq_sim_irq_requested = gpio_sim_irq_requested,

	.irq_sim_irq_released = gpio_sim_irq_released,

};



static void gpio_sim_dbg_show(struct seq_file *seq, struct gpio_chip *gc)

{

	struct gpio_sim_chip *chip = gpiochip_get_data(gc);
@@ -443,7 +464,9 @@ static int gpio_sim_add_bank(struct fwnode_handle *swnode, struct device *dev) 
	if (!chip->pull_map)

		return -ENOMEM;



	chip->irq_sim = devm_irq_domain_create_sim(dev, swnode, num_lines);

	chip->irq_sim = devm_irq_domain_create_sim_full(dev, swnode, num_lines,

							&gpio_sim_irq_sim_ops,

							chip);

	if (IS_ERR(chip->irq_sim))

		return PTR_ERR(chip->irq_sim);