Hi, Mark:
On Wed, 2019-12-11 at 10:49 -0500, Mark Yacoub wrote:
> drm/mediatek: Add OVL_CON_ALPHA only when the plane format has_alpha.
>
> This change enables XR24 format to be displayed as an overlay on top of
> the primary plane.
Reviewed-by: CK Hu <ck...@mediatek.com>
>
> Suggested-by: Sean Paul <seanp...@chromium.org>
> To: CK Hu <ck...@mediatek.com>
> To: dri-devel@lists.freedesktop.org
> Cc: Daniele Castagna <dcasta...@chromium.org>
> Cc: Philipp Zabel <p.za...@pengutronix.de>
> Cc: David Airlie <airl...@linux.ie>
> Cc: Daniel Vetter <dan...@ffwll.ch>
> Cc: Matthias Brugger <matthias....@gmail.com>
> Cc: linux-arm-ker...@lists.infradead.org
> Cc: linux-media...@lists.infradead.org
> Signed-off-by: Mark Yacoub <markyac...@google.com>
> ---
> drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> index 526b595eeff9..a7851756dddf 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> @@ -266,7 +266,7 @@ static void mtk_ovl_layer_config(struct mtk_ddp_comp
> *comp, unsigned int idx,
> }
>
> con = ovl_fmt_convert(ovl, fmt);
> - if (idx != 0)
> + if (state->base.fb->format->has_alpha)
> con |= OVL_CON_AEN | OVL_CON_ALPHA;
>
> if (pending->rotation & DRM_MODE_REFLECT_Y) {
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