diff options
| -rw-r--r-- | drivers/pinctrl/pinctrl-amd.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c index 61d830c2bc17..281b700fe7e9 100644 --- a/drivers/pinctrl/pinctrl-amd.c +++ b/drivers/pinctrl/pinctrl-amd.c @@ -40,6 +40,19 @@ #include "pinctrl-utils.h" #include "pinctrl-amd.h" +static int amd_gpio_get_direction(struct gpio_chip *gc, unsigned offset) +{ + unsigned long flags; + u32 pin_reg; + struct amd_gpio *gpio_dev = gpiochip_get_data(gc); + + raw_spin_lock_irqsave(&gpio_dev->lock, flags); + pin_reg = readl(gpio_dev->base + offset * 4); + raw_spin_unlock_irqrestore(&gpio_dev->lock, flags); + + return !(pin_reg & BIT(OUTPUT_ENABLE_OFF)); +} + static int amd_gpio_direction_input(struct gpio_chip *gc, unsigned offset) { unsigned long flags; @@ -845,6 +858,7 @@ static int amd_gpio_probe(struct platform_device *pdev) #endif gpio_dev->pdev = pdev; + gpio_dev->gc.get_direction = amd_gpio_get_direction; gpio_dev->gc.direction_input = amd_gpio_direction_input; gpio_dev->gc.direction_output = amd_gpio_direction_output; gpio_dev->gc.get = amd_gpio_get_value; |