linux-kernel - Re: [PATCH 5/6] drm/msm/dp: migrate the ycbcr_420_allowed to drm

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Message-ID: <3731a3d4-6435-4594-b97f-45c10d9cfcfd@linaro.org>
Date: Mon, 21 Oct 2024 11:57:37 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
 Andrzej Hajda <andrzej.hajda@...el.com>, 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: Re: [PATCH 5/6] drm/msm/dp: migrate the ycbcr_420_allowed to
 drm_bridge

On 18/10/2024 23:49, Dmitry Baryshkov wrote:
> Instead of forcing the ycbcr_420_allowed flag to be set on the created
> drm_connector, set it on the drm_bridge instance and allow
> drm_bridge_connecgtor to propagate it to the drm_connector.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> ---
>   drivers/gpu/drm/msm/dp/dp_display.c |  4 ++--
>   drivers/gpu/drm/msm/dp/dp_drm.c     | 10 ++++------
>   drivers/gpu/drm/msm/dp/dp_drm.h     |  7 ++++---
>   3 files changed, 10 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
> index e1228fb093ee..0ddd8abca499 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -1467,14 +1467,14 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
>   
>   	dp_priv = container_of(dp_display, struct dp_display_private, dp_display);
>   
> -	ret = dp_bridge_init(dp_display, dev, encoder);
> +	ret = dp_bridge_init(dp_display, dev, encoder, yuv_supported);
>   	if (ret) {
>   		DRM_DEV_ERROR(dev->dev,
>   			"failed to create dp bridge: %d\n", ret);
>   		return ret;
>   	}
>   
> -	dp_display->connector = dp_drm_connector_init(dp_display, encoder, yuv_supported);
> +	dp_display->connector = dp_drm_connector_init(dp_display, encoder);
>   	if (IS_ERR(dp_display->connector)) {
>   		ret = PTR_ERR(dp_display->connector);
>   		DRM_DEV_ERROR(dev->dev,
> diff --git a/drivers/gpu/drm/msm/dp/dp_drm.c b/drivers/gpu/drm/msm/dp/dp_drm.c
> index 1b9be5bd97f1..7eb1621f9e7f 100644
> --- a/drivers/gpu/drm/msm/dp/dp_drm.c
> +++ b/drivers/gpu/drm/msm/dp/dp_drm.c
> @@ -289,7 +289,7 @@ static const struct drm_bridge_funcs edp_bridge_ops = {
>   };
>   
>   int dp_bridge_init(struct msm_dp *dp_display, struct drm_device *dev,
> -			struct drm_encoder *encoder)
> +		   struct drm_encoder *encoder, bool yuv_supported)
>   {
>   	int rc;
>   	struct msm_dp_bridge *dp_bridge;
> @@ -304,6 +304,7 @@ int dp_bridge_init(struct msm_dp *dp_display, struct drm_device *dev,
>   	bridge = &dp_bridge->bridge;
>   	bridge->funcs = dp_display->is_edp ? &edp_bridge_ops : &dp_bridge_ops;
>   	bridge->type = dp_display->connector_type;
> +	bridge->ycbcr_420_allowed = yuv_supported;
>   
>   	/*
>   	 * Many ops only make sense for DP. Why?
> @@ -351,8 +352,8 @@ int dp_bridge_init(struct msm_dp *dp_display, struct drm_device *dev,
>   }
>   
>   /* connector initialization */
> -struct drm_connector *dp_drm_connector_init(struct msm_dp *dp_display, struct drm_encoder *encoder,
> -					    bool yuv_supported)
> +struct drm_connector *dp_drm_connector_init(struct msm_dp *dp_display,
> +					    struct drm_encoder *encoder)
>   {
>   	struct drm_connector *connector = NULL;
>   
> @@ -363,9 +364,6 @@ struct drm_connector *dp_drm_connector_init(struct msm_dp *dp_display, struct dr
>   	if (!dp_display->is_edp)
>   		drm_connector_attach_dp_subconnector_property(connector);
>   
> -	if (yuv_supported)
> -		connector->ycbcr_420_allowed = true;
> -
>   	drm_connector_attach_encoder(connector, encoder);
>   
>   	return connector;
> diff --git a/drivers/gpu/drm/msm/dp/dp_drm.h b/drivers/gpu/drm/msm/dp/dp_drm.h
> index 45e57ac25a4d..ae632fcc407c 100644
> --- a/drivers/gpu/drm/msm/dp/dp_drm.h
> +++ b/drivers/gpu/drm/msm/dp/dp_drm.h
> @@ -19,10 +19,11 @@ struct msm_dp_bridge {
>   
>   #define to_dp_bridge(x)     container_of((x), struct msm_dp_bridge, bridge)
>   
> -struct drm_connector *dp_drm_connector_init(struct msm_dp *dp_display, struct drm_encoder *encoder,
> -					    bool yuv_supported);
> +struct drm_connector *dp_drm_connector_init(struct msm_dp *dp_display,
> +					    struct drm_encoder *encoder);
>   int dp_bridge_init(struct msm_dp *dp_display, struct drm_device *dev,
> -			struct drm_encoder *encoder);
> +		   struct drm_encoder *encoder,
> +		   bool yuv_supported);
>   
>   void dp_bridge_atomic_enable(struct drm_bridge *drm_bridge,
>   			     struct drm_bridge_state *old_bridge_state);
> 

Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>