diff mbox

[2/2] gpio: pl061: implement .get_direction()

Message ID 1461846964-30854-1-git-send-email-linus.walleij@linaro.org
State Accepted
Commit 3484f1be2dbf520ad150a0be11f04464b930a4e6
Headers show

Commit Message

Linus Walleij April 28, 2016, 12:36 p.m. UTC 
Implement this callback so that the driver reports correctly
the direction setting of each line.

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

---
 drivers/gpio/gpio-pl061.c | 8 ++++++++
 1 file changed, 8 insertions(+)

-- 
2.4.11

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diff mbox

Patch

diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c
index 70eb9ada002e..6e3c1430616f 100644
--- 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;