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-rw-r--r--drivers/gpu/drm/exynos/exynos_mixer.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index f08e2512c931..ec3e376b7e01 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -643,12 +643,14 @@ static void mixer_win_reset(struct mixer_context *ctx)
/* setting graphical layers */
val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
val |= MXR_GRP_CFG_WIN_BLEND_EN;
- val |= MXR_GRP_CFG_BLEND_PRE_MUL;
- val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
val |= MXR_GRP_CFG_ALPHA_VAL(0xff); /* non-transparent alpha */
- /* the same configuration for both layers */
+ /* Don't blend layer 0 onto the mixer background */
mixer_reg_write(res, MXR_GRAPHIC_CFG(0), val);
+
+ /* Blend layer 1 into layer 0 */
+ val |= MXR_GRP_CFG_BLEND_PRE_MUL;
+ val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
mixer_reg_write(res, MXR_GRAPHIC_CFG(1), val);
/* setting video layers */
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