From 2a9a2f27d35af6c44c2e38437c855f55390c3439 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Wed, 13 Feb 2019 14:15:03 +0100 Subject: [PATCH] gpio: pca953x: Add wake-up support MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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: Geert Uytterhoeven Reviewed-by: Niklas Söderlund Signed-off-by: Linus Walleij --- drivers/gpio/gpio-pca953x.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index cf50d7dbf6ff..caf7dd1d5e16 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -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; -- 2.39.5