gpio: ich: Implement get_direction function
Allow the kernel to query the driver for a GPIO's pin direction.
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-ich.c b/drivers/gpio/gpio-ich.c
index 7818cd1..4ba7ed5 100644
--- a/drivers/gpio/gpio-ich.c
+++ b/drivers/gpio/gpio-ich.c
@@ -173,6 +173,11 @@
return !!(ichx_priv.use_gpio & (1 << (nr / 32)));
}
+static int ichx_gpio_get_direction(struct gpio_chip *gpio, unsigned nr)
+{
+ return ichx_read_bit(GPIO_IO_SEL, nr) ? GPIOF_DIR_IN : GPIOF_DIR_OUT;
+}
+
static int ichx_gpio_direction_input(struct gpio_chip *gpio, unsigned nr)
{
/*
@@ -286,6 +291,7 @@
ichx_priv.desc->get : ichx_gpio_get;
chip->set = ichx_gpio_set;
+ chip->get_direction = ichx_gpio_get_direction;
chip->direction_input = ichx_gpio_direction_input;
chip->direction_output = ichx_gpio_direction_output;
chip->base = modparam_gpiobase;