On Thu, Jul 12, 2018 at 11:15:01AM +0200, Geert Uytterhoeven wrote:
> Allow gpiolib to read back the current I/O direction configuration by
> implementing the .get_direction() callback.
>
> Signed-off-by: Geert Uytterhoeven <geert+rene...@glider.be>
Reviewed-by: Simon Horman <horms+rene...@verge.net.au>
> ---
> drivers/gpio/gpio-rcar.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
> index 4d2cc6d32184f390..ec04752b6bd25fb6 100644
> --- a/drivers/gpio/gpio-rcar.c
> +++ b/drivers/gpio/gpio-rcar.c
> @@ -278,6 +278,13 @@ static void gpio_rcar_free(struct gpio_chip *chip,
> unsigned offset)
> pm_runtime_put(&p->pdev->dev);
> }
>
> +static int gpio_rcar_get_direction(struct gpio_chip *chip, unsigned int
> offset)
> +{
> + struct gpio_rcar_priv *p = gpiochip_get_data(chip);
> +
> + return !(gpio_rcar_read(p, INOUTSEL) & BIT(offset));
> +}
> +
> static int gpio_rcar_direction_input(struct gpio_chip *chip, unsigned offset)
> {
> gpio_rcar_config_general_input_output_mode(chip, offset, false);
> @@ -461,6 +468,7 @@ static int gpio_rcar_probe(struct platform_device *pdev)
> gpio_chip = &p->gpio_chip;
> gpio_chip->request = gpio_rcar_request;
> gpio_chip->free = gpio_rcar_free;
> + gpio_chip->get_direction = gpio_rcar_get_direction;
> gpio_chip->direction_input = gpio_rcar_direction_input;
> gpio_chip->get = gpio_rcar_get;
> gpio_chip->direction_output = gpio_rcar_direction_output;
> --
> 2.17.1
>
