linux-kernel - Re: [PATCH] drm/msm/dp: Remove encoder pointer from struct msm

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Date:   Fri, 24 Jun 2022 19:11:08 -0700
From:   Abhinav Kumar <quic_abhinavk@...cinc.com>
To:     Stephen Boyd <swboyd@...omium.org>,
        Rob Clark <robdclark@...il.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC:     <linux-kernel@...r.kernel.org>, <patches@...ts.linux.dev>,
        Sean Paul <sean@...rly.run>, <dri-devel@...ts.freedesktop.org>,
        <freedreno@...ts.freedesktop.org>,
        Kuogee Hsieh <quic_khsieh@...cinc.com>
Subject: Re: [PATCH] drm/msm/dp: Remove encoder pointer from struct msm_dp



On 6/24/2022 5:28 PM, Stephen Boyd wrote:
> We don't need to stash the encoder here. Instead we can simply pass it
> around as an argument.
> 
> Cc: Kuogee Hsieh <quic_khsieh@...cinc.com>
> Signed-off-by: Stephen Boyd <swboyd@...omium.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@...cinc.com>
> ---
>   drivers/gpu/drm/msm/dp/dp_display.c | 4 +---
>   drivers/gpu/drm/msm/dp/dp_display.h | 1 -
>   drivers/gpu/drm/msm/dp/dp_drm.c     | 8 ++++----
>   drivers/gpu/drm/msm/dp/dp_drm.h     | 2 +-
>   4 files changed, 6 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
> index da5c03a8cc4c..798fd5398b48 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -1621,8 +1621,6 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
>   		return ret;
>   	}
>   
> -	dp_display->encoder = encoder;
> -
>   	ret = dp_display_get_next_bridge(dp_display);
>   	if (ret)
>   		return ret;
> @@ -1638,7 +1636,7 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
>   
>   	priv->bridges[priv->num_bridges++] = dp_display->bridge;
>   
> -	dp_display->connector = dp_drm_connector_init(dp_display);
> +	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_display.h b/drivers/gpu/drm/msm/dp/dp_display.h
> index 4f9fe4d7610b..dcedf021f7fe 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.h
> +++ b/drivers/gpu/drm/msm/dp/dp_display.h
> @@ -15,7 +15,6 @@ struct msm_dp {
>   	struct device *codec_dev;
>   	struct drm_bridge *bridge;
>   	struct drm_connector *connector;
> -	struct drm_encoder *encoder;
>   	struct drm_bridge *next_bridge;
>   	bool is_connected;
>   	bool audio_enabled;
> diff --git a/drivers/gpu/drm/msm/dp/dp_drm.c b/drivers/gpu/drm/msm/dp/dp_drm.c
> index 62d58b9c4647..6df25f7662e7 100644
> --- a/drivers/gpu/drm/msm/dp/dp_drm.c
> +++ b/drivers/gpu/drm/msm/dp/dp_drm.c
> @@ -116,7 +116,7 @@ struct drm_bridge *dp_bridge_init(struct msm_dp *dp_display, struct drm_device *
>   	}
>   
>   	if (dp_display->next_bridge) {
> -		rc = drm_bridge_attach(dp_display->encoder,
> +		rc = drm_bridge_attach(encoder,
>   					dp_display->next_bridge, bridge,
>   					DRM_BRIDGE_ATTACH_NO_CONNECTOR);
>   		if (rc < 0) {
> @@ -130,15 +130,15 @@ struct drm_bridge *dp_bridge_init(struct msm_dp *dp_display, struct drm_device *
>   }
>   
>   /* connector initialization */
> -struct drm_connector *dp_drm_connector_init(struct msm_dp *dp_display)
> +struct drm_connector *dp_drm_connector_init(struct msm_dp *dp_display, struct drm_encoder *encoder)
>   {
>   	struct drm_connector *connector = NULL;
>   
> -	connector = drm_bridge_connector_init(dp_display->drm_dev, dp_display->encoder);
> +	connector = drm_bridge_connector_init(dp_display->drm_dev, encoder);
>   	if (IS_ERR(connector))
>   		return connector;
>   
> -	drm_connector_attach_encoder(connector, dp_display->encoder);
> +	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 f4b1ed1e24f7..82035dbb0578 100644
> --- a/drivers/gpu/drm/msm/dp/dp_drm.h
> +++ b/drivers/gpu/drm/msm/dp/dp_drm.h
> @@ -19,7 +19,7 @@ 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_connector *dp_drm_connector_init(struct msm_dp *dp_display, struct drm_encoder *encoder);
>   struct drm_bridge *dp_bridge_init(struct msm_dp *dp_display, struct drm_device *dev,
>   			struct drm_encoder *encoder);
>   
> 
> base-commit: 24df12013853ac59c52cc726e9cbe51e38d09eda