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authorLinus Walleij <linus.walleij@linaro.org>2016-04-28 15:33:17 +0300
committerLinus Walleij <linus.walleij@linaro.org>2016-04-28 15:34:51 +0300
commit67668a57b351df66cd8c94cd84f2a382e440e8ed (patch)
treeb756d4fc0e102e4f5ffbd7f8baa869a7115874ba /drivers/pinctrl/nomadik
parent5e81e0a0913c609ce18709a0a4c8fb54344aaca1 (diff)
downloadlinux-67668a57b351df66cd8c94cd84f2a382e440e8ed.tar.xz
pinctrl: nomadik: implement .get_direction()
This makes the Nomadik gpiochip support the .get_direction() callback. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/nomadik')
-rw-r--r--drivers/pinctrl/nomadik/pinctrl-nomadik.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/pinctrl/nomadik/pinctrl-nomadik.c b/drivers/pinctrl/nomadik/pinctrl-nomadik.c
index 9893013f3cdd..f85ae2efbb28 100644
--- a/drivers/pinctrl/nomadik/pinctrl-nomadik.c
+++ b/drivers/pinctrl/nomadik/pinctrl-nomadik.c
@@ -861,6 +861,20 @@ static void nmk_gpio_latent_irq_handler(struct irq_desc *desc)
/* I/O Functions */
+static int nmk_gpio_get_dir(struct gpio_chip *chip, unsigned offset)
+{
+ struct nmk_gpio_chip *nmk_chip = gpiochip_get_data(chip);
+ int dir;
+
+ clk_enable(nmk_chip->clk);
+
+ dir = !!(readl(nmk_chip->addr + NMK_GPIO_DIR) & BIT(offset));
+
+ clk_disable(nmk_chip->clk);
+
+ return dir;
+}
+
static int nmk_gpio_make_input(struct gpio_chip *chip, unsigned offset)
{
struct nmk_gpio_chip *nmk_chip = gpiochip_get_data(chip);
@@ -1220,6 +1234,7 @@ static int nmk_gpio_probe(struct platform_device *dev)
chip = &nmk_chip->chip;
chip->request = gpiochip_generic_request;
chip->free = gpiochip_generic_free;
+ chip->get_direction = nmk_gpio_get_dir;
chip->direction_input = nmk_gpio_make_input;
chip->get = nmk_gpio_get_input;
chip->direction_output = nmk_gpio_make_output;