gpio: pl061: implement .get_direction()

Implement this callback so that the driver reports correctly
the direction setting of each line.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c
index 70eb9ada002e9119b43a66ec07b215fcd00e3b42..6e3c1430616f8684e3f0729be7c15dcf7df5dc18 100644 (file)
--- a/drivers/gpio/gpio-pl061.c
+++ b/drivers/gpio/gpio-pl061.c
@@ -61,6 +61,13 @@ struct pl061_gpio {
 #endif
 };
 
+static int pl061_get_direction(struct gpio_chip *gc, unsigned offset)
+{
+       struct pl061_gpio *chip = gpiochip_get_data(gc);
+
+       return !(readb(chip->base + GPIODIR) & BIT(offset));
+}
+
 static int pl061_direction_input(struct gpio_chip *gc, unsigned offset)
 {
        struct pl061_gpio *chip = gpiochip_get_data(gc);
@@ -315,6 +322,7 @@ static int pl061_probe(struct amba_device *adev, const struct amba_id *id)
                chip->gc.free = gpiochip_generic_free;
        }
 
+       chip->gc.get_direction = pl061_get_direction;
        chip->gc.direction_input = pl061_direction_input;
        chip->gc.direction_output = pl061_direction_output;
        chip->gc.get = pl061_get_value;