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drm/atomic: Initialise planes with opaque alpha values
Planes without an alpha property, using __drm_atomic_helper_plane_reset will have their plane state alpha initialised as zero, which represents a transparent alpha. If this value is then used for the plane, it may not be visible by default, and thus doesn't represent a good initialisation state. Update the default state->alpha value to DRM_BLEND_ALPHA_OPAQUE unconditionally when the plane is reset. Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180919155700.10342-2-kieran.bingham+renesas@ideasonboard.com
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@ -3569,9 +3569,7 @@ void __drm_atomic_helper_plane_reset(struct drm_plane *plane,
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state->plane = plane;
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state->rotation = DRM_MODE_ROTATE_0;
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/* Reset the alpha value to fully opaque if it matters */
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if (plane->alpha_property)
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state->alpha = plane->alpha_property->values[1];
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state->alpha = DRM_BLEND_ALPHA_OPAQUE;
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state->pixel_blend_mode = DRM_MODE_BLEND_PREMULTI;
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plane->state = state;
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