video: Introduce video_sync operation
Some drivers like LCD connected via SPI requires explicit sync function
which copy framebuffer content over SPI to controller to display.
This hook doesn't exist yet that's why introduce it via video operations.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c
index 6fc4128..938e7d3 100644
--- a/drivers/video/video-uclass.c
+++ b/drivers/video/video-uclass.c
@@ -175,6 +175,15 @@
/* Flush video activity to the caches */
int video_sync(struct udevice *vid, bool force)
{
+ struct video_ops *ops = video_get_ops(vid);
+ int ret;
+
+ if (ops && ops->video_sync) {
+ ret = ops->video_sync(vid);
+ if (ret)
+ return ret;
+ }
+
/*
* flush_dcache_range() is declared in common.h but it seems that some
* architectures do not actually implement it. Is there a way to find