Commit b6b1bb98 authored Dec 11, 2019 by Mark Yacoub Committed by CK Hu Jan 10, 2020

drm/mediatek: Turn off Alpha bit when plane format has no alpha



This change enables XR24 format to be displayed as an overlay on top of
the primary plane.

Suggested-by: Sean Paul <seanpaul@chromium.org>
To: CK Hu <ck.hu@mediatek.com>
To: dri-devel@lists.freedesktop.org
Cc: Daniele Castagna <dcastagna@chromium.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mediatek@lists.infradead.org
Signed-off-by: Mark Yacoub <markyacoub@google.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

parent 039cf36c

drivers/gpu/drm/mediatek/mtk_disp_ovl.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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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