From 7d70116fc752a2b97a67ee839be16239074614ce Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Wed, 13 Jan 2021 20:29:46 -0700
Subject: [PATCH] video: Allow syncing the entire framebuffer to the copy

In some cases so much of the framebuffer is updated that it is not worth
copying the changes piece by piece to the copy framebuffer. Add a function
to copy the whole thing.

Signed-off-by: Simon Glass <sjg@chromium.org>
---
 drivers/video/video-uclass.c | 10 ++++++++++
 include/video.h              | 14 ++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c
index a1d5275..91d078a 100644
--- a/drivers/video/video-uclass.c
+++ b/drivers/video/video-uclass.c
@@ -290,6 +290,16 @@ int video_sync_copy(struct udevice *dev, void *from, void *to)
 
 	return 0;
 }
+
+int video_sync_copy_all(struct udevice *dev)
+{
+	struct video_priv *priv = dev_get_uclass_priv(dev);
+
+	video_sync_copy(dev, priv->fb, priv->fb + priv->fb_size);
+
+	return 0;
+}
+
 #endif
 
 /* Set up the colour map */
diff --git a/include/video.h b/include/video.h
index 74d822f..8277333 100644
--- a/include/video.h
+++ b/include/video.h
@@ -246,11 +246,25 @@ void video_set_default_colors(struct udevice *dev, bool invert);
  *	frame buffer start
  */
 int video_sync_copy(struct udevice *dev, void *from, void *to);
+
+/**
+ * video_sync_copy_all() - Sync the entire framebuffer to the copy
+ *
+ * @dev: Vidconsole device being updated
+ * @return 0 (always)
+ */
+int video_sync_copy_all(struct udevice *dev);
 #else
 static inline int video_sync_copy(struct udevice *dev, void *from, void *to)
 {
 	return 0;
 }
+
+static inline int video_sync_copy_all(struct udevice *dev)
+{
+	return 0;
+}
+
 #endif
 
 #ifndef CONFIG_DM_VIDEO
-- 
2.7.4