gpio: add function _gpio_get_value

Introduce the function _gpio_get_value to get the GPIO value
without check if it is reserved.
This patch prepare new ops introduction.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c
index 32fdc5bfe5cc7dbb4c0ba2de8fc23cd49c3f734b..5c82a4a7dbf97d0e6c53911e8a90ac9cc4e7e549 100644 (file)
--- a/drivers/gpio/gpio-uclass.c
+++ b/drivers/gpio/gpio-uclass.c
@@ -476,18 +476,24 @@ int gpio_direction_output(unsigned gpio, int value)
                                                        desc.offset, value);
 }
 
-int dm_gpio_get_value(const struct gpio_desc *desc)
+static int _gpio_get_value(const struct gpio_desc *desc)
 {
        int value;
+
+       value = gpio_get_ops(desc->dev)->get_value(desc->dev, desc->offset);
+
+       return desc->flags & GPIOD_ACTIVE_LOW ? !value : value;
+}
+
+int dm_gpio_get_value(const struct gpio_desc *desc)
+{
        int ret;
 
        ret = check_reserved(desc, "get_value");
        if (ret)
                return ret;
 
-       value = gpio_get_ops(desc->dev)->get_value(desc->dev, desc->offset);
-
-       return desc->flags & GPIOD_ACTIVE_LOW ? !value : value;
+       return _gpio_get_value(desc);
 }
 
 int dm_gpio_set_value(const struct gpio_desc *desc, int value)