Add documentation for the inline functions in backlight.h
Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Lee Jones <lee.jones@xxxxxxxxxx>
Cc: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
Cc: Jingoo Han <jingoohan1@xxxxxxxxx>
---
include/linux/backlight.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index e2d72936bf05..98349a2984dc 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -283,6 +283,10 @@ struct backlight_device {
int use_count;
};
+/**
+ * backlight_update_status - force an update of the backligt device status
+ * @bd: the backlight device
+ */
static inline int backlight_update_status(struct backlight_device *bd)
{
int ret = -ENOENT;
@@ -375,6 +379,18 @@ extern int backlight_device_set_brightness(struct backlight_device *bd, unsigned
#define to_backlight_device(obj) container_of(obj, struct backlight_device, dev)
+/**
+ * bl_get_data - access devdata
+ * @bl_dev: pointer to backlight device
+ *
+ * When a backlight device is registered the driver has the possibility
+ * to supply a void * devdata. bl_get_data() return a pointer to the
+ * devdata.
+ *
+ * RETURNS:
+ *
+ * pointer to devdata stored while registering the backlight device.
+ */
static inline void * bl_get_data(struct backlight_device *bl_dev)
{
return dev_get_drvdata(&bl_dev->dev);
--
2.25.1
