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| 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 | |
| parent | c3aed5db591ee38068dc2b6d73b04638bd7b7b26 (diff) | |
| download | u-boot-55d39911c0579b91a27f0acf3d0c1e123bb29ac1.tar.gz u-boot-55d39911c0579b91a27f0acf3d0c1e123bb29ac1.tar.xz u-boot-55d39911c0579b91a27f0acf3d0c1e123bb29ac1.zip | |
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')
| -rw-r--r-- | drivers/video/vidconsole-uclass.c | 12 | ||||
| -rw-r--r-- | drivers/video/video-uclass.c | 6 | ||||
| -rw-r--r-- | drivers/video/video_bmp.c | 2 |
3 files changed, 10 insertions, 10 deletions
diff --git a/drivers/video/vidconsole-uclass.c b/drivers/video/vidconsole-uclass.c index 7f95e9c6e5..89ac8b3cc8 100644 --- a/drivers/video/vidconsole-uclass.c +++ b/drivers/video/vidconsole-uclass.c @@ -86,7 +86,7 @@ static int vidconsole_back(struct udevice *dev) if (priv->ycur < 0) priv->ycur = 0; } - video_sync(dev->parent); + video_sync(dev->parent, false); return 0; } @@ -113,7 +113,7 @@ static void vidconsole_newline(struct udevice *dev) } priv->last_ch = 0; - video_sync(dev->parent); + video_sync(dev->parent, false); } static const struct vid_rgb colors[VID_COLOR_COUNT] = { @@ -293,7 +293,7 @@ static void vidconsole_escape_char(struct udevice *dev, char ch) if (mode == 2) { video_clear(dev->parent); - video_sync(dev->parent); + video_sync(dev->parent, false); priv->ycur = 0; priv->xcur_frac = priv->xstart_frac; } else { @@ -449,7 +449,7 @@ static void vidconsole_putc(struct stdio_dev *sdev, const char ch) struct udevice *dev = sdev->priv; vidconsole_put_char(dev, ch); - video_sync(dev->parent); + video_sync(dev->parent, false); } static void vidconsole_puts(struct stdio_dev *sdev, const char *s) @@ -458,7 +458,7 @@ static void vidconsole_puts(struct stdio_dev *sdev, const char *s) while (*s) vidconsole_put_char(dev, *s++); - video_sync(dev->parent); + video_sync(dev->parent, false); } /* Set up the number of rows and colours (rotated drivers override this) */ @@ -547,7 +547,7 @@ static int do_video_puts(cmd_tbl_t *cmdtp, int flag, int argc, for (s = argv[1]; *s; s++) vidconsole_put_char(dev, *s); - video_sync(dev->parent); + video_sync(dev->parent, false); return 0; } 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); } } diff --git a/drivers/video/video_bmp.c b/drivers/video/video_bmp.c index aeff65648c..1377e19081 100644 --- a/drivers/video/video_bmp.c +++ b/drivers/video/video_bmp.c @@ -345,7 +345,7 @@ int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y, break; }; - video_sync(dev); + video_sync(dev, false); return 0; } |