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drm/exynos: allow multiple layer updates per vsync for mixer

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Allowing only one layer update per vsync can cause issues
while there are update available for both layers. There is
a good amount of possibility to loose updates if we allow
single update per vsync.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Rahul Sharma 2014-06-23 11:02:23 +05:30 committed by Inki Dae
parent 381be025ac
commit 5c0f4829e1
1 changed files with 1 additions and 6 deletions
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7
drivers/gpu/drm/exynos/exynos_mixer.c
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@ -511,13 +511,8 @@ static void vp_video_buffer(struct mixer_context *ctx, int win)
static void mixer_layer_update(struct mixer_context *ctx)
{
struct mixer_resources *res = &ctx->mixer_res;
u32 val;
val = mixer_reg_read(res, MXR_CFG);
/* allow one update per vsync only */
if (!(val & MXR_CFG_LAYER_UPDATE_COUNT_MASK))
mixer_reg_writemask(res, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
mixer_reg_writemask(res, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
}
static void mixer_graph_buffer(struct mixer_context *ctx, int win)