// SPDX-License-Identifier: GPL-2.0+
  /*
   * (C) Copyright 2018
   * DENX Software Engineering, Anatolij Gustschin <agust@denx.de>
   *
   * cls - clear screen command
   */
  #include <common.h>
  #include <command.h>
  #include <dm.h>
  #include <lcd.h>
  #include <video.h>
  
  static int do_video_clear(cmd_tbl_t *cmdtp, int flag, int argc,
  			  char *const argv[])
  {
  #if defined(CONFIG_DM_VIDEO)
  	struct udevice *dev;
  
  	if (uclass_first_device_err(UCLASS_VIDEO, &dev))
  		return CMD_RET_FAILURE;
  
  	if (video_clear(dev))
  		return CMD_RET_FAILURE;
  #elif defined(CONFIG_CFB_CONSOLE)
  	video_clear();
  #elif defined(CONFIG_LCD)
  	lcd_clear();
  #else
  	return CMD_RET_FAILURE;
  #endif
  	return CMD_RET_SUCCESS;
  }
  
  U_BOOT_CMD(cls,	1, 1, do_video_clear, "clear screen", "");