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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>
This commit is contained in:
Geert Uytterhoeven 2018-07-12 11:15:01 +02:00 committed by Linus Walleij
parent 1c22a252b3
commit ad81729741
1 changed files with 8 additions and 0 deletions
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8
drivers/gpio/gpio-rcar.c
View File

@ -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;