gpio: xgene: implement .get_direction()
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>
diff --git a/drivers/gpio/gpio-xgene.c b/drivers/gpio/gpio-xgene.c
index 46faecd1..dc85dcd 100644
--- a/drivers/gpio/gpio-xgene.c
+++ b/drivers/gpio/gpio-xgene.c
@@ -85,6 +85,17 @@
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 @@
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;