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 <common.h>
  10 #include <dm.h>
  11 #include <panel.h>
  12
  13 int panel_enable_backlight(struct udevice *dev)
  14 {
  15         struct panel_ops *ops = panel_get_ops(dev);
  16
  17         if (!ops->enable_backlight)
  18                 return -ENOSYS;
  19
  20         return ops->enable_backlight(dev);
  21 }
  22
  23 /**
  24  * panel_set_backlight - Set brightness for the panel backlight
  25  *
  26  * @dev:        Panel device containing the backlight to update
  27  * @percent:    Brightness value (0=off, 1=min brightness,
  28  *              100=full brightness)
  29  * @return 0 if OK, -ve on error
  30  */
  31 int panel_set_backlight(struct udevice *dev, int percent)
  32 {
  33         struct panel_ops *ops = panel_get_ops(dev);
  34
  35         if (!ops->set_backlight)
  36                 return -ENOSYS;
  37
  38         return ops->set_backlight(dev, percent);
  39 }
  40
  41 int panel_get_display_timing(struct udevice *dev,
  42                              struct display_timing *timings)
  43 {
  44         struct panel_ops *ops = panel_get_ops(dev);
  45
  46         if (!ops->get_display_timing)
  47                 return -ENOSYS;
  48
  49         return ops->get_display_timing(dev, timings);
  50 }
  51
  52 UCLASS_DRIVER(panel) = {
  53         .id             = UCLASS_PANEL,
  54         .name           = "panel",
  55 };