Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 2a9a2f27 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Linus Walleij
Browse files

gpio: pca953x: Add wake-up support 



Implement the irq_set_wake() method in the (optional) irq_chip of the
GPIO expander, and propagate wake-up settings to the upstream interrupt
controller.  This allows GPIOs connected to a PCA953X GPIO expander to
serve as wake-up sources.

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: default avatarNiklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 2f7db3c7

drivers/gpio/gpio-pca953x.c

+9 −0
Original line number Diff line number Diff line
@@ -576,6 +576,14 @@ static void pca953x_irq_unmask(struct irq_data *d) 
	chip->irq_mask[d->hwirq / BANK_SZ] |= 1 << (d->hwirq % BANK_SZ);

}



static int pca953x_irq_set_wake(struct irq_data *d, unsigned int on)

{

	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);

	struct pca953x_chip *chip = gpiochip_get_data(gc);



	return irq_set_irq_wake(chip->client->irq, on);

}



static void pca953x_irq_bus_lock(struct irq_data *d)

{

	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
@@ -795,6 +803,7 @@ static int pca953x_irq_setup(struct pca953x_chip *chip, 
	irq_chip->name = dev_name(&chip->client->dev);

	irq_chip->irq_mask = pca953x_irq_mask;

	irq_chip->irq_unmask = pca953x_irq_unmask;

	irq_chip->irq_set_wake = pca953x_irq_set_wake;

	irq_chip->irq_bus_lock = pca953x_irq_bus_lock;

	irq_chip->irq_bus_sync_unlock = pca953x_irq_bus_sync_unlock;

	irq_chip->irq_set_type = pca953x_irq_set_type;