Implement the existing command cls, for clear screen, when CONFIG_DM_VIDEO is activated.

This command was defined for old LCD framework (not dm) in common/lcd.c:251 U_BOOT_CMD(cls, 1, 1, do_lcd_clear, "clear screen", "");

This command is useful to clear existing output (vidconsole) before to display splashscreen with bmp command.

Signed-off-by: Patrick Delaunay patrick.delaunay@st.com --- Example of simple splashscreen in DISTRO script: boot.scr.uimg

if load ${devtype} ${devnum}:${distro_bootpart} ${splashimage} splash.bmp then env set stdout "serial" env set stderr "serial" cls bmp display ${splashimage} fi

drivers/video/video-uclass.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)

diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c index 44dfa71..5fe49a5 100644 --- a/drivers/video/video-uclass.c +++ b/drivers/video/video-uclass.c @@ -300,3 +300,17 @@ UCLASS_DRIVER(video) = { .per_device_auto_alloc_size = sizeof(struct video_priv), .per_device_platdata_auto_alloc_size = sizeof(struct video_uc_platdata), }; + +static int do_video_clear(cmd_tbl_t *cmdtp, int flag, int argc, + char *const argv[]) +{ + struct udevice *dev; + + if (uclass_first_device_err(UCLASS_VIDEO, &dev)) + return CMD_RET_FAILURE; + video_clear(dev); + + return 0; +} + +U_BOOT_CMD(cls, 1, 1, do_video_clear, "clear screen", "");