diff options
| author | Simon Glass <sjg@chromium.org> | 2018-10-01 20:55:14 +0300 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-10-09 13:40:27 +0300 |
| commit | 55d39911c0579b91a27f0acf3d0c1e123bb29ac1 (patch) | |
| tree | 6494c7650aebd1d22ec3a0d6565f85426d4f46a4 /drivers/video/vidconsole-uclass.c | |
| parent | c3aed5db591ee38068dc2b6d73b04638bd7b7b26 (diff) | |
| download | u-boot-55d39911c0579b91a27f0acf3d0c1e123bb29ac1.tar.xz | |
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/vidconsole-uclass.c')
| -rw-r--r-- | drivers/video/vidconsole-uclass.c | 12 |
1 files changed, 6 insertions, 6 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; } |