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 #define LOG_CATEGORY UCLASS_PANEL_BACKLIGHT
   8
   9 #include <common.h>
  10 #include <dm.h>
  11 #include <backlight.h>
  12
  13 int backlight_enable(struct udevice *dev)
  14 {
  15         const struct backlight_ops *ops = backlight_get_ops(dev);
  16
  17         if (!ops->enable)
  18                 return -ENOSYS;
  19
  20         return ops->enable(dev);
  21 }
  22
  23 int backlight_set_brightness(struct udevice *dev, int percent)
  24 {
  25         const struct backlight_ops *ops = backlight_get_ops(dev);
  26
  27         if (!ops->set_brightness)
  28                 return -ENOSYS;
  29
  30         return ops->set_brightness(dev, percent);
  31 }
  32
  33 UCLASS_DRIVER(backlight) = {
  34         .id             = UCLASS_PANEL_BACKLIGHT,
  35         .name           = "backlight",
  36 };