diff mbox series

[2/7] drm/meson: remove useless recursive components matching

Message ID 20211014152606.2289528-3-narmstrong@baylibre.com (mailing list archive)
State New, archived
Headers show
Series drm/meson: rework encoders to pass ATTACH_NO_CONNECTOR | expand

Commit Message

Neil Armstrong Oct. 14, 2021, 3:26 p.m. UTC
The initial design was recursive to cover all port/endpoints, but only the first layer
of endpoints should be covered by the components list.
This also breaks the MIPI-DSI init/bridge attach sequence, thus only parse the
first endpoints instead of recursing.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
 drivers/gpu/drm/meson/meson_drv.c | 62 +++++++++++--------------------
 1 file changed, 21 insertions(+), 41 deletions(-)

Comments

Sam Ravnborg Oct. 14, 2021, 5:49 p.m. UTC | #1
Hi Neil,

one comment below. Other than that
Acked-by: Sam Ravnborg <sam@ravnborg.org>

	Sam

On Thu, Oct 14, 2021 at 05:26:01PM +0200, Neil Armstrong wrote:
> The initial design was recursive to cover all port/endpoints, but only the first layer
> of endpoints should be covered by the components list.
> This also breaks the MIPI-DSI init/bridge attach sequence, thus only parse the
> first endpoints instead of recursing.
> 
> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
> ---
>  drivers/gpu/drm/meson/meson_drv.c | 62 +++++++++++--------------------
>  1 file changed, 21 insertions(+), 41 deletions(-)
> 
> diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
> index bc0d60df04ae..b53606d8825f 100644
> --- a/drivers/gpu/drm/meson/meson_drv.c
> +++ b/drivers/gpu/drm/meson/meson_drv.c
> @@ -427,46 +427,6 @@ static int compare_of(struct device *dev, void *data)
>  	return dev->of_node == data;
>  }
>  
> -/* Possible connectors nodes to ignore */
> -static const struct of_device_id connectors_match[] = {
> -	{ .compatible = "composite-video-connector" },
> -	{ .compatible = "svideo-connector" },
> -	{ .compatible = "hdmi-connector" },
> -	{ .compatible = "dvi-connector" },
> -	{}
> -};
> -
> -static int meson_probe_remote(struct platform_device *pdev,
> -			      struct component_match **match,
> -			      struct device_node *parent,
> -			      struct device_node *remote)
> -{
> -	struct device_node *ep, *remote_node;
> -	int count = 1;
> -
> -	/* If node is a connector, return and do not add to match table */
> -	if (of_match_node(connectors_match, remote))
> -		return 1;
> -
> -	component_match_add(&pdev->dev, match, compare_of, remote);
> -
> -	for_each_endpoint_of_node(remote, ep) {
> -		remote_node = of_graph_get_remote_port_parent(ep);
> -		if (!remote_node ||
> -		    remote_node == parent || /* Ignore parent endpoint */
> -		    !of_device_is_available(remote_node)) {
> -			of_node_put(remote_node);
> -			continue;
> -		}
> -
> -		count += meson_probe_remote(pdev, match, remote, remote_node);
> -
> -		of_node_put(remote_node);
> -	}
> -
> -	return count;
> -}
> -
>  static void meson_drv_shutdown(struct platform_device *pdev)
>  {
>  	struct meson_drm *priv = dev_get_drvdata(&pdev->dev);
> @@ -478,6 +438,13 @@ static void meson_drv_shutdown(struct platform_device *pdev)
>  	drm_atomic_helper_shutdown(priv->drm);
>  }
>  
> +/* Possible connectors nodes to ignore */
> +static const struct of_device_id connectors_match[] = {
> +	{ .compatible = "composite-video-connector" },
> +	{ .compatible = "svideo-connector" },
> +	{}
> +};
> +
>  static int meson_drv_probe(struct platform_device *pdev)
>  {
>  	struct component_match *match = NULL;
> @@ -492,8 +459,21 @@ static int meson_drv_probe(struct platform_device *pdev)
>  			continue;
>  		}
>  
> -		count += meson_probe_remote(pdev, &match, np, remote);
> +		/* If an analog connector is detected, count it as an output */
> +		if (of_match_node(connectors_match, remote)) {
> +			++count;
> +			of_node_put(remote);
> +			continue;
> +		}
> +
> +		DRM_DEBUG_DRIVER("parent %pOF remote match add %pOF parent %s\n",
> +				  np, remote, dev_name(&pdev->dev));
Avoid the deprecated logging functions.
Use drm_dbg() or if there is no drm_device just dev_dbg().

I assume the driver uses DRM_xxx all over, so I understand if you keep
it as-is.

> +
> +		component_match_add(&pdev->dev, &match, compare_of, remote);
> +
>  		of_node_put(remote);
> +
> +		++count;
>  	}
>  
>  	if (count && !match)
> -- 
> 2.25.1
Neil Armstrong Oct. 15, 2021, 7:53 a.m. UTC | #2
Hi Sam,

On 14/10/2021 19:49, Sam Ravnborg wrote:
> Hi Neil,
> 
> one comment below. Other than that
> Acked-by: Sam Ravnborg <sam@ravnborg.org>
> 
> 	Sam
> 
> On Thu, Oct 14, 2021 at 05:26:01PM +0200, Neil Armstrong wrote:
>> The initial design was recursive to cover all port/endpoints, but only the first layer
>> of endpoints should be covered by the components list.
>> This also breaks the MIPI-DSI init/bridge attach sequence, thus only parse the
>> first endpoints instead of recursing.
>>
>> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
>> ---
>>  drivers/gpu/drm/meson/meson_drv.c | 62 +++++++++++--------------------
>>  1 file changed, 21 insertions(+), 41 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
>> index bc0d60df04ae..b53606d8825f 100644
>> --- a/drivers/gpu/drm/meson/meson_drv.c
>> +++ b/drivers/gpu/drm/meson/meson_drv.c
>> @@ -427,46 +427,6 @@ static int compare_of(struct device *dev, void *data)
>>  	return dev->of_node == data;
>>  }
>>  
>> -/* Possible connectors nodes to ignore */
>> -static const struct of_device_id connectors_match[] = {
>> -	{ .compatible = "composite-video-connector" },
>> -	{ .compatible = "svideo-connector" },
>> -	{ .compatible = "hdmi-connector" },
>> -	{ .compatible = "dvi-connector" },
>> -	{}
>> -};
>> -
>> -static int meson_probe_remote(struct platform_device *pdev,
>> -			      struct component_match **match,
>> -			      struct device_node *parent,
>> -			      struct device_node *remote)
>> -{
>> -	struct device_node *ep, *remote_node;
>> -	int count = 1;
>> -
>> -	/* If node is a connector, return and do not add to match table */
>> -	if (of_match_node(connectors_match, remote))
>> -		return 1;
>> -
>> -	component_match_add(&pdev->dev, match, compare_of, remote);
>> -
>> -	for_each_endpoint_of_node(remote, ep) {
>> -		remote_node = of_graph_get_remote_port_parent(ep);
>> -		if (!remote_node ||
>> -		    remote_node == parent || /* Ignore parent endpoint */
>> -		    !of_device_is_available(remote_node)) {
>> -			of_node_put(remote_node);
>> -			continue;
>> -		}
>> -
>> -		count += meson_probe_remote(pdev, match, remote, remote_node);
>> -
>> -		of_node_put(remote_node);
>> -	}
>> -
>> -	return count;
>> -}
>> -
>>  static void meson_drv_shutdown(struct platform_device *pdev)
>>  {
>>  	struct meson_drm *priv = dev_get_drvdata(&pdev->dev);
>> @@ -478,6 +438,13 @@ static void meson_drv_shutdown(struct platform_device *pdev)
>>  	drm_atomic_helper_shutdown(priv->drm);
>>  }
>>  
>> +/* Possible connectors nodes to ignore */
>> +static const struct of_device_id connectors_match[] = {
>> +	{ .compatible = "composite-video-connector" },
>> +	{ .compatible = "svideo-connector" },
>> +	{}
>> +};
>> +
>>  static int meson_drv_probe(struct platform_device *pdev)
>>  {
>>  	struct component_match *match = NULL;
>> @@ -492,8 +459,21 @@ static int meson_drv_probe(struct platform_device *pdev)
>>  			continue;
>>  		}
>>  
>> -		count += meson_probe_remote(pdev, &match, np, remote);
>> +		/* If an analog connector is detected, count it as an output */
>> +		if (of_match_node(connectors_match, remote)) {
>> +			++count;
>> +			of_node_put(remote);
>> +			continue;
>> +		}
>> +
>> +		DRM_DEBUG_DRIVER("parent %pOF remote match add %pOF parent %s\n",
>> +				  np, remote, dev_name(&pdev->dev));
> Avoid the deprecated logging functions.
> Use drm_dbg() or if there is no drm_device just dev_dbg().
> 
> I assume the driver uses DRM_xxx all over, so I understand if you keep
> it as-is.

Since it's in the probe function, I will move to dev_dbg().
I'll probably do a print cleanup all over the driver.

> 
>> +
>> +		component_match_add(&pdev->dev, &match, compare_of, remote);
>> +
>>  		of_node_put(remote);
>> +
>> +		++count;
>>  	}
>>  
>>  	if (count && !match)
>> -- 
>> 2.25.1

Thanks,
Neil
diff mbox series

Patch

diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index bc0d60df04ae..b53606d8825f 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -427,46 +427,6 @@  static int compare_of(struct device *dev, void *data)
 	return dev->of_node == data;
 }
 
-/* Possible connectors nodes to ignore */
-static const struct of_device_id connectors_match[] = {
-	{ .compatible = "composite-video-connector" },
-	{ .compatible = "svideo-connector" },
-	{ .compatible = "hdmi-connector" },
-	{ .compatible = "dvi-connector" },
-	{}
-};
-
-static int meson_probe_remote(struct platform_device *pdev,
-			      struct component_match **match,
-			      struct device_node *parent,
-			      struct device_node *remote)
-{
-	struct device_node *ep, *remote_node;
-	int count = 1;
-
-	/* If node is a connector, return and do not add to match table */
-	if (of_match_node(connectors_match, remote))
-		return 1;
-
-	component_match_add(&pdev->dev, match, compare_of, remote);
-
-	for_each_endpoint_of_node(remote, ep) {
-		remote_node = of_graph_get_remote_port_parent(ep);
-		if (!remote_node ||
-		    remote_node == parent || /* Ignore parent endpoint */
-		    !of_device_is_available(remote_node)) {
-			of_node_put(remote_node);
-			continue;
-		}
-
-		count += meson_probe_remote(pdev, match, remote, remote_node);
-
-		of_node_put(remote_node);
-	}
-
-	return count;
-}
-
 static void meson_drv_shutdown(struct platform_device *pdev)
 {
 	struct meson_drm *priv = dev_get_drvdata(&pdev->dev);
@@ -478,6 +438,13 @@  static void meson_drv_shutdown(struct platform_device *pdev)
 	drm_atomic_helper_shutdown(priv->drm);
 }
 
+/* Possible connectors nodes to ignore */
+static const struct of_device_id connectors_match[] = {
+	{ .compatible = "composite-video-connector" },
+	{ .compatible = "svideo-connector" },
+	{}
+};
+
 static int meson_drv_probe(struct platform_device *pdev)
 {
 	struct component_match *match = NULL;
@@ -492,8 +459,21 @@  static int meson_drv_probe(struct platform_device *pdev)
 			continue;
 		}
 
-		count += meson_probe_remote(pdev, &match, np, remote);
+		/* If an analog connector is detected, count it as an output */
+		if (of_match_node(connectors_match, remote)) {
+			++count;
+			of_node_put(remote);
+			continue;
+		}
+
+		DRM_DEBUG_DRIVER("parent %pOF remote match add %pOF parent %s\n",
+				  np, remote, dev_name(&pdev->dev));
+
+		component_match_add(&pdev->dev, &match, compare_of, remote);
+
 		of_node_put(remote);
+
+		++count;
 	}
 
 	if (count && !match)