diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2018-07-12 11:15:01 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2018-07-13 10:55:26 +0200 |
| commit | ad817297418539b8895bbbf1d05ee3e5a211a117 (patch) | |
| tree | f7567bc6e5c2cc47415c34bfbad62e5601e8dee6 /drivers/gpio/gpio-rcar.c | |
| parent | gpiolib: Join one line back for better readability (diff) | |
| download | linux-ad817297418539b8895bbbf1d05ee3e5a211a117.tar.xz linux-ad817297418539b8895bbbf1d05ee3e5a211a117.zip | |
gpio: rcar: Implement .get_direction() callback
Allow gpiolib to read back the current I/O direction configuration by
implementing the .get_direction() callback.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-rcar.c')
| -rw-r--r-- | drivers/gpio/gpio-rcar.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c index 2c9a4fc92dc6..55cc61086d99 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; |