From: Simon Glass <sjg@chromium.org>
Date: Fri, 10 Mar 2023 20:47:21 +0000 (-0800)
Subject: video: Clear the vidconsole rather than the video
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=a76b60f8205eb7f02e17e10c13ad05e46a69c1fd;p=u-boot.git

video: Clear the vidconsole rather than the video

It is better to clear the console device rather than the video device,
since the console has the text display. We also need to reset the cursor
position with the console, but not with the video device.

Add a new function to handle this and update the 'cls' command to use it.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

diff --git a/cmd/cls.c b/cmd/cls.c
index 40a32eeab6..073ba5a6c8 100644
--- a/cmd/cls.c
+++ b/cmd/cls.c
@@ -8,7 +8,7 @@
 #include <common.h>
 #include <command.h>
 #include <dm.h>
-#include <video.h>
+#include <video_console.h>
 
 #define CSI "\x1b["
 
@@ -19,12 +19,16 @@ static int do_video_clear(struct cmd_tbl *cmdtp, int flag, int argc,
 
 	/*  Send clear screen and home */
 	printf(CSI "2J" CSI "1;1H");
-	if (IS_ENABLED(CONFIG_VIDEO) && !IS_ENABLED(CONFIG_VIDEO_ANSI)) {
-		if (uclass_first_device_err(UCLASS_VIDEO, &dev))
+	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 (video_clear(dev))
+		if (vidconsole_clear_and_reset(dev))
 			return CMD_RET_FAILURE;
 	}
+
 	return CMD_RET_SUCCESS;
 }
 
diff --git a/drivers/video/vidconsole-uclass.c b/drivers/video/vidconsole-uclass.c
index 627db8208b..61f4216750 100644
--- a/drivers/video/vidconsole-uclass.c
+++ b/drivers/video/vidconsole-uclass.c
@@ -643,3 +643,15 @@ int vidconsole_memmove(struct udevice *dev, void *dst, const void *src,
 	return vidconsole_sync_copy(dev, dst, dst + size);
 }
 #endif
+
+int vidconsole_clear_and_reset(struct udevice *dev)
+{
+	int ret;
+
+	ret = video_clear(dev_get_parent(dev));
+	if (ret)
+		return ret;
+	vidconsole_position_cursor(dev, 0, 0);
+
+	return 0;
+}
diff --git a/include/video_console.h b/include/video_console.h
index 770103284b..3db9a7e1fb 100644
--- a/include/video_console.h
+++ b/include/video_console.h
@@ -285,6 +285,15 @@ int vidconsole_put_string(struct udevice *dev, const char *str);
 void vidconsole_position_cursor(struct udevice *dev, unsigned col,
 				unsigned row);
 
+/**
+ * vidconsole_clear_and_reset() - Clear the console and reset the cursor
+ *
+ * The cursor is placed at the start of the console
+ *
+ * @dev:	vidconsole device to adjust
+ */
+int vidconsole_clear_and_reset(struct udevice *dev);
+
 /**
  * vidconsole_set_cursor_pos() - set cursor position
  *