Merge tag 'dm-9oct18' of git://git.denx.de/u-boot-dm

[platform/kernel/u-boot.git] / drivers / video / backlight-uclass.c

diff --git a/drivers/video/backlight-uclass.c b/drivers/video/backlight-uclass.c
index 0238289..0aadf8a 100644 (file)
--- a/drivers/video/backlight-uclass.c
+++ b/drivers/video/backlight-uclass.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (c) 2016 Google, Inc
  * Written by Simon Glass <sjg@chromium.org>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
@@ -19,6 +18,16 @@ int backlight_enable(struct udevice *dev)
        return ops->enable(dev);
 }
 
+int backlight_set_brightness(struct udevice *dev, int percent)
+{
+       const struct backlight_ops *ops = backlight_get_ops(dev);
+
+       if (!ops->set_brightness)
+               return -ENOSYS;
+
+       return ops->set_brightness(dev, percent);
+}
+
 UCLASS_DRIVER(backlight) = {
        .id             = UCLASS_PANEL_BACKLIGHT,
        .name           = "backlight",