diff options
| -rw-r--r-- | drivers/gpio/gpio-mmio.c | 11 | ||||
| -rw-r--r-- | include/linux/gpio/driver.h | 1 |
2 files changed, 11 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-mmio.c b/drivers/gpio/gpio-mmio.c index 4841e4ebe7a6..09b9e1275e7e 100644 --- a/drivers/gpio/gpio-mmio.c +++ b/drivers/gpio/gpio-mmio.c @@ -335,6 +335,11 @@ static int bgpio_dir_return(struct gpio_chip *gc, unsigned int gpio, bool dir_ou return pinctrl_gpio_direction_input(gc, gpio); } +static int bgpio_dir_in_err(struct gpio_chip *gc, unsigned int gpio) +{ + return -EINVAL; +} + static int bgpio_simple_dir_in(struct gpio_chip *gc, unsigned int gpio) { return bgpio_dir_return(gc, gpio, false); @@ -566,7 +571,11 @@ static int bgpio_setup_direction(struct gpio_chip *gc, gc->direction_output = bgpio_dir_out_err; else gc->direction_output = bgpio_simple_dir_out; - gc->direction_input = bgpio_simple_dir_in; + + if (flags & BGPIOF_NO_INPUT) + gc->direction_input = bgpio_dir_in_err; + else + gc->direction_input = bgpio_simple_dir_in; } return 0; diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index b53233051bee..97cc75623261 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -750,6 +750,7 @@ int bgpio_init(struct gpio_chip *gc, struct device *dev, #define BGPIOF_NO_OUTPUT BIT(5) /* only input */ #define BGPIOF_NO_SET_ON_INPUT BIT(6) #define BGPIOF_PINCTRL_BACKEND BIT(7) /* Call pinctrl direction setters */ +#define BGPIOF_NO_INPUT BIT(8) /* only output */ #ifdef CONFIG_GPIOLIB_IRQCHIP int gpiochip_irqchip_add_domain(struct gpio_chip *gc, |