drivers/video/panel-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
   8
   9 #include <dm.h>
  10 #include <panel.h>
  11
  12 int panel_enable_backlight(struct udevice *dev)
  13 {
  14         struct panel_ops *ops = panel_get_ops(dev);
  15
  16         if (!ops->enable_backlight)
  17                 return -ENOSYS;
  18
  19         return ops->enable_backlight(dev);
  20 }
  21
  22 /**
  23  * panel_set_backlight - Set brightness for the panel backlight
  24  *
  25  * @dev:        Panel device containing the backlight to update
  26  * @percent:    Brightness value (0=off, 1=min brightness,
  27  *              100=full brightness)
  28  * Return: 0 if OK, -ve on error
  29  */
  30 int panel_set_backlight(struct udevice *dev, int percent)
  31 {
  32         struct panel_ops *ops = panel_get_ops(dev);
  33
  34         if (!ops->set_backlight)
  35                 return -ENOSYS;
  36
  37         return ops->set_backlight(dev, percent);
  38 }
  39
  40 int panel_get_display_timing(struct udevice *dev,
  41                              struct display_timing *timings)
  42 {
  43         struct panel_ops *ops = panel_get_ops(dev);
  44
  45         if (!ops->get_display_timing)
  46                 return -ENOSYS;
  47
  48         return ops->get_display_timing(dev, timings);
  49 }
  50
  51 UCLASS_DRIVER(panel) = {
  52         .id             = UCLASS_PANEL,
  53         .name           = "panel",
  54 };