#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
* @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)
* 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