From ad817297418539b8895bbbf1d05ee3e5a211a117 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Thu, 12 Jul 2018 11:15:01 +0200 Subject: [PATCH] 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 Reviewed-by: Wolfram Sang Tested-by: Wolfram Sang Reviewed-by: Simon Horman Signed-off-by: Linus Walleij --- 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 2c9a4fc..55cc610 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; -- 2.7.4