diff mbox

gpio: xgene: implement .get_direction()

Message ID 1462091530-27288-1-git-send-email-linus.walleij@linaro.org
State Accepted
Commit 3b711e0781f34400326f911c15784e84deca84b6
Headers show

Commit Message

Linus Walleij May 1, 2016, 8:32 a.m. UTC 
This implements the .get_direction() callback for the xgene GPIO
controller.

Cc: Duc Dang <dhdang@apm.com>
Cc: Feng Kan <fkan@apm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

---
 drivers/gpio/gpio-xgene.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

-- 
2.4.11

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diff mbox

Patch

diff --git a/drivers/gpio/gpio-xgene.c b/drivers/gpio/gpio-xgene.c
index 46faecd1f580..dc85dcd47d19 100644
--- a/drivers/gpio/gpio-xgene.c
+++ b/drivers/gpio/gpio-xgene.c
@@ -85,6 +85,17 @@  static void xgene_gpio_set(struct gpio_chip *gc, unsigned int offset, int val)
 	spin_unlock_irqrestore(&chip->lock, flags);
 }
 
+static int xgene_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
+{
+	struct xgene_gpio *chip = gpiochip_get_data(gc);
+	unsigned long bank_offset, bit_offset;
+
+	bank_offset = GPIO_SET_DR_OFFSET + GPIO_BANK_OFFSET(offset);
+	bit_offset = GPIO_BIT_OFFSET(offset);
+
+	return !!(ioread32(chip->base + bank_offset) & BIT(bit_offset));
+}
+
 static int xgene_gpio_dir_in(struct gpio_chip *gc, unsigned int offset)
 {
 	struct xgene_gpio *chip = gpiochip_get_data(gc);
@@ -184,6 +195,7 @@  static int xgene_gpio_probe(struct platform_device *pdev)
 
 	spin_lock_init(&gpio->lock);
 	gpio->chip.parent = &pdev->dev;
+	gpio->chip.get_direction = xgene_gpio_get_direction;
 	gpio->chip.direction_input = xgene_gpio_dir_in;
 	gpio->chip.direction_output = xgene_gpio_dir_out;
 	gpio->chip.get = xgene_gpio_get;