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