Hi Geert,
Thanks for your patch,
On 2019-02-13 14:15:03 +0100, Geert Uytterhoeven wrote:
> 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@xxxxxxxxx>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
> ---
> Tested with a PCA9654 and gpio-keys on an R-Car Ebisu-4D board.
>
> v2:
> - Just propagate irq_set_irq_wake(). As pca953x_irq_set_wake()
> doesn't need to do anything else, there's no reason for making it
> conditional.
> ---
> 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 de52f63863dbe59b..86c00a3980c47c3b 100644
> --- a/drivers/gpio/gpio-pca953x.c
> +++ b/drivers/gpio/gpio-pca953x.c
> @@ -513,6 +513,14 @@ 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);
> @@ -732,6 +740,7 @@ 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;
> --
> 2.17.1
>
--
Regards,
Niklas Söderlund
