X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fbacklight.h;h=c8418828d17bdc7dd0d411ffc21f8a8930088f90;hb=a29491ade0adf3dbb9dc51be8b45530edde1f1df;hp=a304c36e019817296481baa66b1241605e136102;hpb=e8f80a5a58c9b506453cc0780687e8ed457d30a6;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/backlight.h b/include/backlight.h
index a304c36..c841882 100644
--- a/include/backlight.h
+++ b/include/backlight.h
@@ -7,6 +7,15 @@
 #ifndef _BACKLIGHT_H
 #define _BACKLIGHT_H
 
+struct udevice;
+
+enum {
+	BACKLIGHT_MAX		= 100,
+	BACKLIGHT_MIN		= 0,
+	BACKLIGHT_OFF		= -1,
+	BACKLIGHT_DEFAULT	= -2,
+};
+
 struct backlight_ops {
 	/**
 	 * enable() - Enable a backlight
@@ -15,6 +24,15 @@ struct backlight_ops {
 	 * @return 0 if OK, -ve on error
 	 */
 	int (*enable)(struct udevice *dev);
+
+	/**
+	 * set_brightness - Set brightness
+	 *
+	 * @dev:	Backlight device to update
+	 * @percent:	Brightness value (0 to 100, or BACKLIGHT_... value)
+	 * @return 0 if OK, -ve on error
+	 */
+	int (*set_brightness)(struct udevice *dev, int percent);
 };
 
 #define backlight_get_ops(dev)	((struct backlight_ops *)(dev)->driver->ops)
@@ -23,8 +41,17 @@ struct backlight_ops {
  * backlight_enable() - Enable a backlight
  *
  * @dev:	Backlight device to enable
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
  */
 int backlight_enable(struct udevice *dev);
 
+/**
+ * backlight_set_brightness - Set brightness
+ *
+ * @dev:	Backlight device to update
+ * @percent:	Brightness value (0 to 100, or BACKLIGHT_... value)
+ * Return: 0 if OK, -ve on error
+ */
+int backlight_set_brightness(struct udevice *dev, int percent);
+
 #endif