diff options
| author | Simon Glass <sjg@chromium.org> | 2018-10-01 11:55:14 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-10-09 04:40:27 -0600 |
| commit | 55d39911c0579b91a27f0acf3d0c1e123bb29ac1 (patch) | |
| tree | 6494c7650aebd1d22ec3a0d6565f85426d4f46a4 /drivers/video/video-uclass.c | |
| parent | c3aed5db591ee38068dc2b6d73b04638bd7b7b26 (diff) | |
sandbox: video: Speed up video output
At present there are many situations where sandbox syncs the display to
the SDL frame buffer. This is a very expensive operation but is only
needed every now and then. Update video_sync() so that we can specify
whether this operation is really needed.
At present this flag is not used on other architectures. It could also
be used for reducing writeback-cache flushes but the benefit of that would
need to be investigated.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Diffstat (limited to 'drivers/video/video-uclass.c')
| -rw-r--r-- | drivers/video/video-uclass.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c index dd0873767b..fea0886c41 100644 --- a/drivers/video/video-uclass.c +++ b/drivers/video/video-uclass.c @@ -128,7 +128,7 @@ void video_set_default_colors(struct video_priv *priv) } /* Flush video activity to the caches */ -void video_sync(struct udevice *vid) +void video_sync(struct udevice *vid, bool force) { /* * flush_dcache_range() is declared in common.h but it seems that some @@ -147,7 +147,7 @@ void video_sync(struct udevice *vid) struct video_priv *priv = dev_get_uclass_priv(vid); static ulong last_sync; - if (get_timer(last_sync) > 10) { + if (force || get_timer(last_sync) > 10) { sandbox_sdl_sync(priv->fb); last_sync = get_timer(0); } @@ -162,7 +162,7 @@ void video_sync_all(void) dev; uclass_find_next_device(&dev)) { if (device_active(dev)) - video_sync(dev); + video_sync(dev, true); } } |