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authorGeert Uytterhoeven <geert+renesas@glider.be>2018-07-12 12:15:01 +0300
committerLinus Walleij <linus.walleij@linaro.org>2018-07-13 11:55:26 +0300
commitad817297418539b8895bbbf1d05ee3e5a211a117 (patch)
treef7567bc6e5c2cc47415c34bfbad62e5601e8dee6 /drivers/gpio
parent1c22a252b3ded10d06acecdf8fb71f9dd8005c4f (diff)
downloadlinux-ad817297418539b8895bbbf1d05ee3e5a211a117.tar.xz
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')
-rw-r--r--drivers/gpio/gpio-rcar.c8
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;