cmd/cls.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2018
   4  * DENX Software Engineering, Anatolij Gustschin <[email protected]>
   5  *
   6  * cls - clear screen command
   7  */
   8 #include <common.h>
   9 #include <command.h>
  10 #include <dm.h>
  11 #include <lcd.h>
  12 #include <video.h>
  13
  14 #define CSI "\x1b["
  15
  16 static int do_video_clear(struct cmd_tbl *cmdtp, int flag, int argc,
  17                           char *const argv[])
  18 {
  19         __maybe_unused struct udevice *dev;
  20
  21         /*  Send clear screen and home */
  22         printf(CSI "2J" CSI "1;1H");
  23 #if defined(CONFIG_DM_VIDEO)
  24 #if !defined(CONFIG_VIDEO_ANSI)
  25         if (uclass_first_device_err(UCLASS_VIDEO, &dev))
  26                 return CMD_RET_FAILURE;
  27
  28         if (video_clear(dev))
  29                 return CMD_RET_FAILURE;
  30 #endif
  31 #elif defined(CONFIG_LCD)
  32         lcd_clear();
  33 #else
  34         return CMD_RET_FAILURE;
  35 #endif
  36         return CMD_RET_SUCCESS;
  37 }
  38
  39 U_BOOT_CMD(cls, 1, 1, do_video_clear, "clear screen", "");