[PATCH v4 2/5] video: Move last_sync to private data

[Simon Glass <sjg@chromium.org>]

Rather than using a static variable, use the video device's private
data to remember when the last video sync was completed. This allows
each display to have its own sync and avoids using static data in SPL.

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

(no changes since v1)

 drivers/video/video-uclass.c | 10 +++-------
 include/video.h              |  2 ++
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c
index ff1382f4a43..a95b5f199dc 100644
--- a/drivers/video/video-uclass.c
+++ b/drivers/video/video-uclass.c
@@ -349,6 +349,7 @@ void video_set_default_colors(struct udevice *dev, bool invert)
 /* Flush video activity to the caches */
 int video_sync(struct udevice *vid, bool force)
 {
+	struct video_priv *priv = dev_get_uclass_priv(vid);
 	struct video_ops *ops = video_get_ops(vid);
 	int ret;
 
@@ -364,20 +365,15 @@ int video_sync(struct udevice *vid, bool force)
 	 * out whether it exists? For now, ARM is safe.
 	 */
 #if defined(CONFIG_ARM) && !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
-	struct video_priv *priv = dev_get_uclass_priv(vid);
-
 	if (priv->flush_dcache) {
 		flush_dcache_range((ulong)priv->fb,
 				   ALIGN((ulong)priv->fb + priv->fb_size,
 					 CONFIG_SYS_CACHELINE_SIZE));
 	}
 #elif defined(CONFIG_VIDEO_SANDBOX_SDL)
-	struct video_priv *priv = dev_get_uclass_priv(vid);
-	static ulong last_sync;
-
-	if (force || get_timer(last_sync) > 100) {
+	if (force || get_timer(priv->last_sync) > 100) {
 		sandbox_sdl_sync(priv->fb);
-		last_sync = get_timer(0);
+		priv->last_sync = get_timer(0);
 	}
 #endif
 	return 0;
diff --git a/include/video.h b/include/video.h
index 4d8df9baaad..4013a949983 100644
--- a/include/video.h
+++ b/include/video.h
@@ -97,6 +97,7 @@ enum video_format {
  *		the LCD is updated
  * @fg_col_idx:	Foreground color code (bit 3 = bold, bit 0-2 = color)
  * @bg_col_idx:	Background color code (bit 3 = bold, bit 0-2 = color)
+ * @last_sync:	Monotonic time of last video sync
  */
 struct video_priv {
 	/* Things set up by the driver: */
@@ -121,6 +122,7 @@ struct video_priv {
 	bool flush_dcache;
 	u8 fg_col_idx;
 	u8 bg_col_idx;
+	ulong last_sync;
 };
 
 /**
-- 
2.34.1