Allow gpiolib to read back the current I/O direction configuration by
implementing the .get_direction() callback.
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
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
