diff --git a/drivers/gpio/gpio-max77620.c b/drivers/gpio/gpio-max77620.c index 02eca400b307..e6c85411c695 100644 --- a/drivers/gpio/gpio-max77620.c +++ b/drivers/gpio/gpio-max77620.c @@ -132,6 +132,24 @@ static const struct irq_chip max77620_gpio_irqchip = { GPIOCHIP_IRQ_RESOURCE_HELPERS, }; +static int max77620_gpio_get_dir(struct gpio_chip *gc, unsigned int offset) +{ + struct max77620_gpio *mgpio = gpiochip_get_data(gc); + unsigned int val; + int ret; + + ret = regmap_read(mgpio->rmap, GPIO_REG_ADDR(offset), &val); + if (ret < 0) { + dev_err(mgpio->dev, "CNFG_GPIOx read failed: %d\n", ret); + return ret; + } + + if (val & MAX77620_CNFG_GPIO_DIR_MASK) + return GPIO_LINE_DIRECTION_IN; + else + return GPIO_LINE_DIRECTION_OUT; +} + static int max77620_gpio_dir_input(struct gpio_chip *gc, unsigned int offset) { struct max77620_gpio *mgpio = gpiochip_get_data(gc); @@ -308,6 +326,7 @@ static int max77620_gpio_probe(struct platform_device *pdev) mgpio->gpio_chip.label = pdev->name; mgpio->gpio_chip.parent = pdev->dev.parent; + mgpio->gpio_chip.get_direction = max77620_gpio_get_dir; mgpio->gpio_chip.direction_input = max77620_gpio_dir_input; mgpio->gpio_chip.get = max77620_gpio_get; mgpio->gpio_chip.direction_output = max77620_gpio_dir_output;