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video: Add a function to clear the display

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Move the code from the 'cls' command into the console file, so it can
be called from elsewhere.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2023-10-01 19:15:23 -06:00
committed by Tom Rini
parent c0e708eb9f
commit cde03fa23e
3 changed files with 44 additions and 22 deletions
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25
cmd/cls.c
View File

@@ -7,33 +7,14 @@
*/
#include <common.h>
#include <command.h>
#include <console.h>
#include <dm.h>
#include <video_console.h>
#define CSI "\x1b["
static int do_video_clear(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
__maybe_unused struct udevice *dev;
/*
* Send clear screen and home
*
* FIXME(Heinrich Schuchardt <xypron.glpk@gmx.de>): This should go
* through an API and only be written to serial terminals, not video
* displays
*/
printf(CSI "2J" CSI "1;1H");
if (IS_ENABLED(CONFIG_VIDEO_ANSI))
return 0;
if (IS_ENABLED(CONFIG_VIDEO)) {
if (uclass_first_device_err(UCLASS_VIDEO_CONSOLE, &dev))
return CMD_RET_FAILURE;
if (vidconsole_clear_and_reset(dev))
return CMD_RET_FAILURE;
}
if (console_clear())
return CMD_RET_FAILURE;
return CMD_RET_SUCCESS;
}