linux-kernel - [PATCH 4/6] drm/bridge: aux: allow interlaced and YCbCr 420 output

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Message-Id: <20241019-bridge-yuv420-v1-4-d74efac9e4e6@linaro.org>
Date: Sat, 19 Oct 2024 00:49:15 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Andrzej Hajda <andrzej.hajda@...el.com>, 
 Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>, 
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Rob Clark <robdclark@...il.com>, Abhinav Kumar <quic_abhinavk@...cinc.com>, 
 Sean Paul <sean@...rly.run>, Marijn Suijten <marijn.suijten@...ainline.org>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org
Subject: [PATCH 4/6] drm/bridge: aux: allow interlaced and YCbCr 420 output

As both aux bridges are merely passthrough bridges, mark them as
supporting interlaced and YCbCr 420 data. Other bridges in the chain
still might limit interlaced and YCbCr 420 data support on the
corresponding connector.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
 drivers/gpu/drm/bridge/aux-bridge.c     | 4 ++++
 drivers/gpu/drm/bridge/aux-hpd-bridge.c | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/bridge/aux-bridge.c b/drivers/gpu/drm/bridge/aux-bridge.c
index b29980f95379..e3e95ccec1ae 100644
--- a/drivers/gpu/drm/bridge/aux-bridge.c
+++ b/drivers/gpu/drm/bridge/aux-bridge.c
@@ -120,6 +120,10 @@ static int drm_aux_bridge_probe(struct auxiliary_device *auxdev,
 	data->bridge.funcs = &drm_aux_bridge_funcs;
 	data->bridge.of_node = data->dev->of_node;
 
+	/* passthrough data, allow everything */
+	data->bridge.interlace_allowed = true;
+	data->bridge.ycbcr_420_allowed = true;
+
 	return devm_drm_bridge_add(data->dev, &data->bridge);
 }
 
diff --git a/drivers/gpu/drm/bridge/aux-hpd-bridge.c b/drivers/gpu/drm/bridge/aux-hpd-bridge.c
index 6886db2d9e00..48f297c78ee6 100644
--- a/drivers/gpu/drm/bridge/aux-hpd-bridge.c
+++ b/drivers/gpu/drm/bridge/aux-hpd-bridge.c
@@ -180,6 +180,10 @@ static int drm_aux_hpd_bridge_probe(struct auxiliary_device *auxdev,
 	data->bridge.ops = DRM_BRIDGE_OP_HPD;
 	data->bridge.type = id->driver_data;
 
+	/* passthrough data, allow everything */
+	data->bridge.interlace_allowed = true;
+	data->bridge.ycbcr_420_allowed = true;
+
 	auxiliary_set_drvdata(auxdev, data);
 
 	return devm_drm_bridge_add(data->dev, &data->bridge);

-- 
2.39.5