Commit 0377f4ed authored by Sean Paul's avatar Sean Paul Committed by Inki Dae

drm/exynos: Don't blend mixer layer 0

This patch disables blending the mixer's layer 0 onto the background
(solid color). It doesn't make sense to blend this layer by default,
and causes color distortion if the layer is used for arbitrary content.
Signed-off-by: default avatarSean Paul <seanpaul@chromium.org>
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
parent 5f46c333
...@@ -643,12 +643,14 @@ static void mixer_win_reset(struct mixer_context *ctx) ...@@ -643,12 +643,14 @@ static void mixer_win_reset(struct mixer_context *ctx)
/* setting graphical layers */ /* setting graphical layers */
val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */ val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
val |= MXR_GRP_CFG_WIN_BLEND_EN; 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 */ 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); 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); mixer_reg_write(res, MXR_GRAPHIC_CFG(1), val);
/* setting video layers */ /* setting video layers */
......
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