drivers/video/backlight-uclass.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2016 Google, Inc
   4  * Written by Simon Glass <sjg@chromium.org>
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <backlight.h>
  10
  11 int backlight_enable(struct udevice *dev)
  12 {
  13         const struct backlight_ops *ops = backlight_get_ops(dev);
  14
  15         if (!ops->enable)
  16                 return -ENOSYS;
  17
  18         return ops->enable(dev);
  19 }
  20
  21 int backlight_set_brightness(struct udevice *dev, int percent)
  22 {
  23         const struct backlight_ops *ops = backlight_get_ops(dev);
  24
  25         if (!ops->set_brightness)
  26                 return -ENOSYS;
  27
  28         return ops->set_brightness(dev, percent);
  29 }
  30
  31 UCLASS_DRIVER(backlight) = {
  32         .id             = UCLASS_PANEL_BACKLIGHT,
  33         .name           = "backlight",
  34 };