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Message-ID: <20240614024620.19011-16-shawn.sung@mediatek.com>
Date: Fri, 14 Jun 2024 10:46:14 +0800
From: Shawn Sung <shawn.sung@...iatek.com>
To: Chun-Kuang Hu <chunkuang.hu@...nel.org>
CC: Philipp Zabel <p.zabel@...gutronix.de>, David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>, Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, "Bibby
Hsieh" <bibby.hsieh@...iatek.com>, CK Hu <ck.hu@...iatek.com>, "Nancy . Lin"
<nancy.lin@...iatek.com>, Sean Paul <sean@...rly.run>, Jason Chen
<jason-ch.chen@...iatek.corp-partner.google.com>, Fei Shao
<fshao@...omium.org>, <dri-devel@...ts.freedesktop.org>,
<linux-mediatek@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>, Hsiao Chien Sung
<shawn.sung@...iatek.com>
Subject: [PATCH v9 15/21] drm/mediatek: Support "None" blending in Mixer
From: Hsiao Chien Sung <shawn.sung@...iatek.com>
Support "None" alpha blending mode on MediaTek's chips.
Signed-off-by: Hsiao Chien Sung <shawn.sung@...iatek.com>
---
drivers/gpu/drm/mediatek/mtk_ethdr.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_ethdr.c b/drivers/gpu/drm/mediatek/mtk_ethdr.c
index 7eaafd44f320..907c0ed34c64 100644
--- a/drivers/gpu/drm/mediatek/mtk_ethdr.c
+++ b/drivers/gpu/drm/mediatek/mtk_ethdr.c
@@ -3,6 +3,7 @@
* Copyright (c) 2021 MediaTek Inc.
*/
+#include <drm/drm_blend.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include <linux/clk.h>
@@ -175,7 +176,8 @@ void mtk_ethdr_layer_config(struct device *dev, unsigned int idx,
alpha_con |= state->base.alpha & MIXER_ALPHA;
}
- if (state->base.fb && !state->base.fb->format->has_alpha) {
+ if ((state->base.fb && !state->base.fb->format->has_alpha) ||
+ state->base.pixel_blend_mode == DRM_MODE_BLEND_PIXEL_NONE) {
/*
* Mixer doesn't support CONST_BLD mode,
* use a trick to make the output equivalent
--
2.18.0
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