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Subject[PATCH v1 1/1] pinctrl: iproc: Add 'get_direction' support
Date
Add 'get_direction' support to the iProc GPIO driver.

Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
---
drivers/pinctrl/bcm/pinctrl-iproc-gpio.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c b/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c
index b70058c..d782d70 100644
--- a/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c
+++ b/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c
@@ -355,6 +355,15 @@ static int iproc_gpio_direction_output(struct gpio_chip *gc, unsigned gpio,
return 0;
}

+static int iproc_gpio_get_direction(struct gpio_chip *gc, unsigned int gpio)
+{
+ struct iproc_gpio *chip = gpiochip_get_data(gc);
+ unsigned int offset = IPROC_GPIO_REG(gpio, IPROC_GPIO_OUT_EN_OFFSET);
+ unsigned int shift = IPROC_GPIO_SHIFT(gpio);
+
+ return !(readl(chip->base + offset) & BIT(shift));
+}
+
static void iproc_gpio_set(struct gpio_chip *gc, unsigned gpio, int val)
{
struct iproc_gpio *chip = gpiochip_get_data(gc);
@@ -784,6 +793,7 @@ static int iproc_gpio_probe(struct platform_device *pdev)
gc->free = iproc_gpio_free;
gc->direction_input = iproc_gpio_direction_input;
gc->direction_output = iproc_gpio_direction_output;
+ gc->get_direction = iproc_gpio_get_direction;
gc->set = iproc_gpio_set;
gc->get = iproc_gpio_get;

--
1.9.1
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