diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2019-02-13 14:15:03 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-02-20 10:30:45 +0100 |
| commit | 2a9a2f27d35af6c44c2e38437c855f55390c3439 (patch) | |
| tree | ff2eed9121535a4f0c07f6b76f0f11aa86993b6a /drivers | |
| parent | 2f7db3c70fdfb22480a1b0aa734664fc256532f2 (diff) | |
| download | talos-op-linux-2a9a2f27d35af6c44c2e38437c855f55390c3439.tar.gz talos-op-linux-2a9a2f27d35af6c44c2e38437c855f55390c3439.zip | |
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: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpio/gpio-pca953x.c | 9 |
1 files changed, 9 insertions, 0 deletions
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; |
