diff mbox series

[v2,02/13] drm/msm/hdmi: switch to devm_drm_bridge_add()

Message ID 20231009181040.2743847-3-dmitry.baryshkov@linaro.org
State Accepted
Commit 719093a67c7f82c997b0d0eb55ed5deaa88bec7b
Headers show
Series drm/msm: move KMS code from msm_drv.c | expand

Commit Message

Dmitry Baryshkov Oct. 9, 2023, 6:10 p.m. UTC
Make MSM HDMI driver use devm_drm_bridge_add() instead of plain
drm_bridge_add(). As the driver doesn't require any additional cleanup,
stop adding created bridge to the priv->bridges array.

Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/msm/hdmi/hdmi.c        | 22 +++++--------------
 drivers/gpu/drm/msm/hdmi/hdmi.h        |  5 ++---
 drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 30 ++++++++------------------
 drivers/gpu/drm/msm/hdmi/hdmi_hpd.c    |  3 +--
 4 files changed, 17 insertions(+), 43 deletions(-)

Comments

Abhinav Kumar Oct. 9, 2023, 7:19 p.m. UTC | #1
On 10/9/2023 11:10 AM, Dmitry Baryshkov wrote:
> Make MSM HDMI driver use devm_drm_bridge_add() instead of plain
> drm_bridge_add(). As the driver doesn't require any additional cleanup,
> stop adding created bridge to the priv->bridges array.
> 
> Reviewed-by: Rob Clark <robdclark@gmail.com>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> ---
>   drivers/gpu/drm/msm/hdmi/hdmi.c        | 22 +++++--------------
>   drivers/gpu/drm/msm/hdmi/hdmi.h        |  5 ++---
>   drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 30 ++++++++------------------
>   drivers/gpu/drm/msm/hdmi/hdmi_hpd.c    |  3 +--
>   4 files changed, 17 insertions(+), 43 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
> index b6bcb9f675fe..c8ebd75176bb 100644
> --- a/drivers/gpu/drm/msm/hdmi/hdmi.c
> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
> @@ -160,24 +160,16 @@ static int msm_hdmi_init(struct hdmi *hdmi)
>   int msm_hdmi_modeset_init(struct hdmi *hdmi,
>   		struct drm_device *dev, struct drm_encoder *encoder)
>   {
> -	struct msm_drm_private *priv = dev->dev_private;
>   	int ret;
>   
> -	if (priv->num_bridges == ARRAY_SIZE(priv->bridges)) {
> -		DRM_DEV_ERROR(dev->dev, "too many bridges\n");
> -		return -ENOSPC;
> -	}
> -
>   	hdmi->dev = dev;
>   	hdmi->encoder = encoder;
>   
>   	hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
>   
> -	hdmi->bridge = msm_hdmi_bridge_init(hdmi);
> -	if (IS_ERR(hdmi->bridge)) {
> -		ret = PTR_ERR(hdmi->bridge);
> +	ret = msm_hdmi_bridge_init(hdmi);
> +	if (ret) {
>   		DRM_DEV_ERROR(dev->dev, "failed to create HDMI bridge: %d\n", ret);
> -		hdmi->bridge = NULL;
>   		goto fail;
>   	}
>   
> @@ -215,16 +207,9 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
>   		goto fail;
>   	}
>   
> -	priv->bridges[priv->num_bridges++]       = hdmi->bridge;
> -
>   	return 0;
>   
>   fail:
> -	/* bridge is normally destroyed by drm: */
> -	if (hdmi->bridge) {
> -		msm_hdmi_bridge_destroy(hdmi->bridge);
> -		hdmi->bridge = NULL;
> -	}
>   	if (hdmi->connector) {
>   		hdmi->connector->funcs->destroy(hdmi->connector);
>   		hdmi->connector = NULL;
> @@ -395,6 +380,9 @@ static void msm_hdmi_unbind(struct device *dev, struct device *master,
>   		if (priv->hdmi->audio_pdev)
>   			platform_device_unregister(priv->hdmi->audio_pdev);
>   
> +		if (priv->hdmi->bridge)
> +			msm_hdmi_hpd_disable(priv->hdmi);
> +

Now is this the only place where hdmi->bridge is used?

Why cant we just keep msm_hdmi_hpd_disable(priv->hdmi) here since its 
anyway protected by if (priv->hdmi) and drop hdmi->bridge completely?

>   		msm_hdmi_destroy(priv->hdmi);
>   		priv->hdmi = NULL;
>   	}
> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h
> index e8dbee50637f..ec5786440391 100644
> --- a/drivers/gpu/drm/msm/hdmi/hdmi.h
> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
> @@ -224,14 +224,13 @@ void msm_hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate);
>    * hdmi bridge:
>    */
>   
> -struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi);
> -void msm_hdmi_bridge_destroy(struct drm_bridge *bridge);
> +int msm_hdmi_bridge_init(struct hdmi *hdmi);
>   
>   void msm_hdmi_hpd_irq(struct drm_bridge *bridge);
>   enum drm_connector_status msm_hdmi_bridge_detect(
>   		struct drm_bridge *bridge);
>   int msm_hdmi_hpd_enable(struct drm_bridge *bridge);
> -void msm_hdmi_hpd_disable(struct hdmi_bridge *hdmi_bridge);
> +void msm_hdmi_hpd_disable(struct hdmi *hdmi);
>   
>   /*
>    * i2c adapter for ddc:
> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> index 9b1391d27ed3..0b7a6a56677e 100644
> --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> @@ -11,14 +11,6 @@
>   #include "msm_kms.h"
>   #include "hdmi.h"
>   
> -void msm_hdmi_bridge_destroy(struct drm_bridge *bridge)
> -{
> -	struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
> -
> -	msm_hdmi_hpd_disable(hdmi_bridge);
> -	drm_bridge_remove(bridge);
> -}
> -
>   static void msm_hdmi_power_on(struct drm_bridge *bridge)
>   {
>   	struct drm_device *dev = bridge->dev;
> @@ -317,7 +309,7 @@ msm_hdmi_hotplug_work(struct work_struct *work)
>   }
>   
>   /* initialize bridge */
> -struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi)
> +int msm_hdmi_bridge_init(struct hdmi *hdmi)
>   {
>   	struct drm_bridge *bridge = NULL;
>   	struct hdmi_bridge *hdmi_bridge;
> @@ -325,10 +317,8 @@ struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi)
>   
>   	hdmi_bridge = devm_kzalloc(hdmi->dev->dev,
>   			sizeof(*hdmi_bridge), GFP_KERNEL);
> -	if (!hdmi_bridge) {
> -		ret = -ENOMEM;
> -		goto fail;
> -	}
> +	if (!hdmi_bridge)
> +		return -ENOMEM;
>   
>   	hdmi_bridge->hdmi = hdmi;
>   	INIT_WORK(&hdmi_bridge->hpd_work, msm_hdmi_hotplug_work);
> @@ -341,17 +331,15 @@ struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi)
>   		DRM_BRIDGE_OP_DETECT |
>   		DRM_BRIDGE_OP_EDID;
>   
> -	drm_bridge_add(bridge);
> +	ret = devm_drm_bridge_add(&hdmi->pdev->dev, bridge);
> +	if (ret)
> +		return ret;
>   
>   	ret = drm_bridge_attach(hdmi->encoder, bridge, NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR);
>   	if (ret)
> -		goto fail;
> +		return ret;
>   
> -	return bridge;
> +	hdmi->bridge = bridge;
>   
> -fail:
> -	if (bridge)
> -		msm_hdmi_bridge_destroy(bridge);
> -
> -	return ERR_PTR(ret);
> +	return 0;
>   }
> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
> index bfa827b47989..9ce0ffa35417 100644
> --- a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
> +++ b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
> @@ -147,9 +147,8 @@ int msm_hdmi_hpd_enable(struct drm_bridge *bridge)
>   	return ret;
>   }
>   
> -void msm_hdmi_hpd_disable(struct hdmi_bridge *hdmi_bridge)
> +void msm_hdmi_hpd_disable(struct hdmi *hdmi)
>   {
> -	struct hdmi *hdmi = hdmi_bridge->hdmi;
>   	const struct hdmi_platform_config *config = hdmi->config;
>   	struct device *dev = &hdmi->pdev->dev;
>   	int ret;
Abhinav Kumar Oct. 9, 2023, 7:50 p.m. UTC | #2
On 10/9/2023 12:21 PM, Dmitry Baryshkov wrote:
> On 09/10/2023 22:19, Abhinav Kumar wrote:
>>
>>
>> On 10/9/2023 11:10 AM, Dmitry Baryshkov wrote:
>>> Make MSM HDMI driver use devm_drm_bridge_add() instead of plain
>>> drm_bridge_add(). As the driver doesn't require any additional cleanup,
>>> stop adding created bridge to the priv->bridges array.
>>>
>>> Reviewed-by: Rob Clark <robdclark@gmail.com>
>>> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
>>> ---
>>>   drivers/gpu/drm/msm/hdmi/hdmi.c        | 22 +++++--------------
>>>   drivers/gpu/drm/msm/hdmi/hdmi.h        |  5 ++---
>>>   drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 30 ++++++++------------------
>>>   drivers/gpu/drm/msm/hdmi/hdmi_hpd.c    |  3 +--
>>>   4 files changed, 17 insertions(+), 43 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c 
>>> b/drivers/gpu/drm/msm/hdmi/hdmi.c
>>> index b6bcb9f675fe..c8ebd75176bb 100644
>>> --- a/drivers/gpu/drm/msm/hdmi/hdmi.c
>>> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
>>> @@ -160,24 +160,16 @@ static int msm_hdmi_init(struct hdmi *hdmi)
>>>   int msm_hdmi_modeset_init(struct hdmi *hdmi,
>>>           struct drm_device *dev, struct drm_encoder *encoder)
>>>   {
>>> -    struct msm_drm_private *priv = dev->dev_private;
>>>       int ret;
>>> -    if (priv->num_bridges == ARRAY_SIZE(priv->bridges)) {
>>> -        DRM_DEV_ERROR(dev->dev, "too many bridges\n");
>>> -        return -ENOSPC;
>>> -    }
>>> -
>>>       hdmi->dev = dev;
>>>       hdmi->encoder = encoder;
>>>       hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
>>> -    hdmi->bridge = msm_hdmi_bridge_init(hdmi);
>>> -    if (IS_ERR(hdmi->bridge)) {
>>> -        ret = PTR_ERR(hdmi->bridge);
>>> +    ret = msm_hdmi_bridge_init(hdmi);
>>> +    if (ret) {
>>>           DRM_DEV_ERROR(dev->dev, "failed to create HDMI bridge: 
>>> %d\n", ret);
>>> -        hdmi->bridge = NULL;
>>>           goto fail;
>>>       }
>>> @@ -215,16 +207,9 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
>>>           goto fail;
>>>       }
>>> -    priv->bridges[priv->num_bridges++]       = hdmi->bridge;
>>> -
>>>       return 0;
>>>   fail:
>>> -    /* bridge is normally destroyed by drm: */
>>> -    if (hdmi->bridge) {
>>> -        msm_hdmi_bridge_destroy(hdmi->bridge);
>>> -        hdmi->bridge = NULL;
>>> -    }
>>>       if (hdmi->connector) {
>>>           hdmi->connector->funcs->destroy(hdmi->connector);
>>>           hdmi->connector = NULL;
>>> @@ -395,6 +380,9 @@ static void msm_hdmi_unbind(struct device *dev, 
>>> struct device *master,
>>>           if (priv->hdmi->audio_pdev)
>>>               platform_device_unregister(priv->hdmi->audio_pdev);
>>> +        if (priv->hdmi->bridge)
>>> +            msm_hdmi_hpd_disable(priv->hdmi);
>>> +
>>
>> Now is this the only place where hdmi->bridge is used?
>>
>> Why cant we just keep msm_hdmi_hpd_disable(priv->hdmi) here since its 
>> anyway protected by if (priv->hdmi) and drop hdmi->bridge completely?
> 
> Sure, sounds like a good idea, same followup as for the DSI.

Ok, this is fine then,

Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>

> 
>>
>>>           msm_hdmi_destroy(priv->hdmi);
>>>           priv->hdmi = NULL;
>>>       }
>>> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h 
>>> b/drivers/gpu/drm/msm/hdmi/hdmi.h
>>> index e8dbee50637f..ec5786440391 100644
>>> --- a/drivers/gpu/drm/msm/hdmi/hdmi.h
>>> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
>>> @@ -224,14 +224,13 @@ void msm_hdmi_audio_set_sample_rate(struct hdmi 
>>> *hdmi, int rate);
>>>    * hdmi bridge:
>>>    */
>>> -struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi);
>>> -void msm_hdmi_bridge_destroy(struct drm_bridge *bridge);
>>> +int msm_hdmi_bridge_init(struct hdmi *hdmi);
>>>   void msm_hdmi_hpd_irq(struct drm_bridge *bridge);
>>>   enum drm_connector_status msm_hdmi_bridge_detect(
>>>           struct drm_bridge *bridge);
>>>   int msm_hdmi_hpd_enable(struct drm_bridge *bridge);
>>> -void msm_hdmi_hpd_disable(struct hdmi_bridge *hdmi_bridge);
>>> +void msm_hdmi_hpd_disable(struct hdmi *hdmi);
>>>   /*
>>>    * i2c adapter for ddc:
>>> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c 
>>> b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
>>> index 9b1391d27ed3..0b7a6a56677e 100644
>>> --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
>>> +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
>>> @@ -11,14 +11,6 @@
>>>   #include "msm_kms.h"
>>>   #include "hdmi.h"
>>> -void msm_hdmi_bridge_destroy(struct drm_bridge *bridge)
>>> -{
>>> -    struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
>>> -
>>> -    msm_hdmi_hpd_disable(hdmi_bridge);
>>> -    drm_bridge_remove(bridge);
>>> -}
>>> -
>>>   static void msm_hdmi_power_on(struct drm_bridge *bridge)
>>>   {
>>>       struct drm_device *dev = bridge->dev;
>>> @@ -317,7 +309,7 @@ msm_hdmi_hotplug_work(struct work_struct *work)
>>>   }
>>>   /* initialize bridge */
>>> -struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi)
>>> +int msm_hdmi_bridge_init(struct hdmi *hdmi)
>>>   {
>>>       struct drm_bridge *bridge = NULL;
>>>       struct hdmi_bridge *hdmi_bridge;
>>> @@ -325,10 +317,8 @@ struct drm_bridge *msm_hdmi_bridge_init(struct 
>>> hdmi *hdmi)
>>>       hdmi_bridge = devm_kzalloc(hdmi->dev->dev,
>>>               sizeof(*hdmi_bridge), GFP_KERNEL);
>>> -    if (!hdmi_bridge) {
>>> -        ret = -ENOMEM;
>>> -        goto fail;
>>> -    }
>>> +    if (!hdmi_bridge)
>>> +        return -ENOMEM;
>>>       hdmi_bridge->hdmi = hdmi;
>>>       INIT_WORK(&hdmi_bridge->hpd_work, msm_hdmi_hotplug_work);
>>> @@ -341,17 +331,15 @@ struct drm_bridge *msm_hdmi_bridge_init(struct 
>>> hdmi *hdmi)
>>>           DRM_BRIDGE_OP_DETECT |
>>>           DRM_BRIDGE_OP_EDID;
>>> -    drm_bridge_add(bridge);
>>> +    ret = devm_drm_bridge_add(&hdmi->pdev->dev, bridge);
>>> +    if (ret)
>>> +        return ret;
>>>       ret = drm_bridge_attach(hdmi->encoder, bridge, NULL, 
>>> DRM_BRIDGE_ATTACH_NO_CONNECTOR);
>>>       if (ret)
>>> -        goto fail;
>>> +        return ret;
>>> -    return bridge;
>>> +    hdmi->bridge = bridge;
>>> -fail:
>>> -    if (bridge)
>>> -        msm_hdmi_bridge_destroy(bridge);
>>> -
>>> -    return ERR_PTR(ret);
>>> +    return 0;
>>>   }
>>> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c 
>>> b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
>>> index bfa827b47989..9ce0ffa35417 100644
>>> --- a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
>>> +++ b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
>>> @@ -147,9 +147,8 @@ int msm_hdmi_hpd_enable(struct drm_bridge *bridge)
>>>       return ret;
>>>   }
>>> -void msm_hdmi_hpd_disable(struct hdmi_bridge *hdmi_bridge)
>>> +void msm_hdmi_hpd_disable(struct hdmi *hdmi)
>>>   {
>>> -    struct hdmi *hdmi = hdmi_bridge->hdmi;
>>>       const struct hdmi_platform_config *config = hdmi->config;
>>>       struct device *dev = &hdmi->pdev->dev;
>>>       int ret;
>
Abhinav Kumar Oct. 9, 2023, 9:04 p.m. UTC | #3
On 10/9/2023 1:53 PM, Dmitry Baryshkov wrote:
> On 09/10/2023 22:21, Dmitry Baryshkov wrote:
>> On 09/10/2023 22:19, Abhinav Kumar wrote:
>>>
>>>
>>> On 10/9/2023 11:10 AM, Dmitry Baryshkov wrote:
>>>> Make MSM HDMI driver use devm_drm_bridge_add() instead of plain
>>>> drm_bridge_add(). As the driver doesn't require any additional cleanup,
>>>> stop adding created bridge to the priv->bridges array.
>>>>
>>>> Reviewed-by: Rob Clark <robdclark@gmail.com>
>>>> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
>>>> ---
>>>>   drivers/gpu/drm/msm/hdmi/hdmi.c        | 22 +++++--------------
>>>>   drivers/gpu/drm/msm/hdmi/hdmi.h        |  5 ++---
>>>>   drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 30 
>>>> ++++++++------------------
>>>>   drivers/gpu/drm/msm/hdmi/hdmi_hpd.c    |  3 +--
>>>>   4 files changed, 17 insertions(+), 43 deletions(-)
>>>>
>>>> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c 
>>>> b/drivers/gpu/drm/msm/hdmi/hdmi.c
>>>> index b6bcb9f675fe..c8ebd75176bb 100644
>>>> --- a/drivers/gpu/drm/msm/hdmi/hdmi.c
>>>> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
>>>> @@ -160,24 +160,16 @@ static int msm_hdmi_init(struct hdmi *hdmi)
>>>>   int msm_hdmi_modeset_init(struct hdmi *hdmi,
>>>>           struct drm_device *dev, struct drm_encoder *encoder)
>>>>   {
>>>> -    struct msm_drm_private *priv = dev->dev_private;
>>>>       int ret;
>>>> -    if (priv->num_bridges == ARRAY_SIZE(priv->bridges)) {
>>>> -        DRM_DEV_ERROR(dev->dev, "too many bridges\n");
>>>> -        return -ENOSPC;
>>>> -    }
>>>> -
>>>>       hdmi->dev = dev;
>>>>       hdmi->encoder = encoder;
>>>>       hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
>>>> -    hdmi->bridge = msm_hdmi_bridge_init(hdmi);
>>>> -    if (IS_ERR(hdmi->bridge)) {
>>>> -        ret = PTR_ERR(hdmi->bridge);
>>>> +    ret = msm_hdmi_bridge_init(hdmi);
>>>> +    if (ret) {
>>>>           DRM_DEV_ERROR(dev->dev, "failed to create HDMI bridge: 
>>>> %d\n", ret);
>>>> -        hdmi->bridge = NULL;
>>>>           goto fail;
>>>>       }
>>>> @@ -215,16 +207,9 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
>>>>           goto fail;
>>>>       }
>>>> -    priv->bridges[priv->num_bridges++]       = hdmi->bridge;
>>>> -
>>>>       return 0;
>>>>   fail:
>>>> -    /* bridge is normally destroyed by drm: */
>>>> -    if (hdmi->bridge) {
>>>> -        msm_hdmi_bridge_destroy(hdmi->bridge);
>>>> -        hdmi->bridge = NULL;
>>>> -    }
>>>>       if (hdmi->connector) {
>>>>           hdmi->connector->funcs->destroy(hdmi->connector);
>>>>           hdmi->connector = NULL;
>>>> @@ -395,6 +380,9 @@ static void msm_hdmi_unbind(struct device *dev, 
>>>> struct device *master,
>>>>           if (priv->hdmi->audio_pdev)
>>>>               platform_device_unregister(priv->hdmi->audio_pdev);
>>>> +        if (priv->hdmi->bridge)
>>>> +            msm_hdmi_hpd_disable(priv->hdmi);
>>>> +
>>>
>>> Now is this the only place where hdmi->bridge is used?
>>>
>>> Why cant we just keep msm_hdmi_hpd_disable(priv->hdmi) here since its 
>>> anyway protected by if (priv->hdmi) and drop hdmi->bridge completely?
>>
>> Sure, sounds like a good idea, same followup as for the DSI.
> 
> I was wrong here. hdmi::bridge is used by the driver (e.g. for HPD 
> reporting).
> 

hmmm, I thought HPD module uses hdmi_bridge->hdmi. here we are talking 
about hdmi->bridge?
diff mbox series

Patch

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index b6bcb9f675fe..c8ebd75176bb 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -160,24 +160,16 @@  static int msm_hdmi_init(struct hdmi *hdmi)
 int msm_hdmi_modeset_init(struct hdmi *hdmi,
 		struct drm_device *dev, struct drm_encoder *encoder)
 {
-	struct msm_drm_private *priv = dev->dev_private;
 	int ret;
 
-	if (priv->num_bridges == ARRAY_SIZE(priv->bridges)) {
-		DRM_DEV_ERROR(dev->dev, "too many bridges\n");
-		return -ENOSPC;
-	}
-
 	hdmi->dev = dev;
 	hdmi->encoder = encoder;
 
 	hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
 
-	hdmi->bridge = msm_hdmi_bridge_init(hdmi);
-	if (IS_ERR(hdmi->bridge)) {
-		ret = PTR_ERR(hdmi->bridge);
+	ret = msm_hdmi_bridge_init(hdmi);
+	if (ret) {
 		DRM_DEV_ERROR(dev->dev, "failed to create HDMI bridge: %d\n", ret);
-		hdmi->bridge = NULL;
 		goto fail;
 	}
 
@@ -215,16 +207,9 @@  int msm_hdmi_modeset_init(struct hdmi *hdmi,
 		goto fail;
 	}
 
-	priv->bridges[priv->num_bridges++]       = hdmi->bridge;
-
 	return 0;
 
 fail:
-	/* bridge is normally destroyed by drm: */
-	if (hdmi->bridge) {
-		msm_hdmi_bridge_destroy(hdmi->bridge);
-		hdmi->bridge = NULL;
-	}
 	if (hdmi->connector) {
 		hdmi->connector->funcs->destroy(hdmi->connector);
 		hdmi->connector = NULL;
@@ -395,6 +380,9 @@  static void msm_hdmi_unbind(struct device *dev, struct device *master,
 		if (priv->hdmi->audio_pdev)
 			platform_device_unregister(priv->hdmi->audio_pdev);
 
+		if (priv->hdmi->bridge)
+			msm_hdmi_hpd_disable(priv->hdmi);
+
 		msm_hdmi_destroy(priv->hdmi);
 		priv->hdmi = NULL;
 	}
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h
index e8dbee50637f..ec5786440391 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.h
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
@@ -224,14 +224,13 @@  void msm_hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate);
  * hdmi bridge:
  */
 
-struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi);
-void msm_hdmi_bridge_destroy(struct drm_bridge *bridge);
+int msm_hdmi_bridge_init(struct hdmi *hdmi);
 
 void msm_hdmi_hpd_irq(struct drm_bridge *bridge);
 enum drm_connector_status msm_hdmi_bridge_detect(
 		struct drm_bridge *bridge);
 int msm_hdmi_hpd_enable(struct drm_bridge *bridge);
-void msm_hdmi_hpd_disable(struct hdmi_bridge *hdmi_bridge);
+void msm_hdmi_hpd_disable(struct hdmi *hdmi);
 
 /*
  * i2c adapter for ddc:
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index 9b1391d27ed3..0b7a6a56677e 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -11,14 +11,6 @@ 
 #include "msm_kms.h"
 #include "hdmi.h"
 
-void msm_hdmi_bridge_destroy(struct drm_bridge *bridge)
-{
-	struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
-
-	msm_hdmi_hpd_disable(hdmi_bridge);
-	drm_bridge_remove(bridge);
-}
-
 static void msm_hdmi_power_on(struct drm_bridge *bridge)
 {
 	struct drm_device *dev = bridge->dev;
@@ -317,7 +309,7 @@  msm_hdmi_hotplug_work(struct work_struct *work)
 }
 
 /* initialize bridge */
-struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi)
+int msm_hdmi_bridge_init(struct hdmi *hdmi)
 {
 	struct drm_bridge *bridge = NULL;
 	struct hdmi_bridge *hdmi_bridge;
@@ -325,10 +317,8 @@  struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi)
 
 	hdmi_bridge = devm_kzalloc(hdmi->dev->dev,
 			sizeof(*hdmi_bridge), GFP_KERNEL);
-	if (!hdmi_bridge) {
-		ret = -ENOMEM;
-		goto fail;
-	}
+	if (!hdmi_bridge)
+		return -ENOMEM;
 
 	hdmi_bridge->hdmi = hdmi;
 	INIT_WORK(&hdmi_bridge->hpd_work, msm_hdmi_hotplug_work);
@@ -341,17 +331,15 @@  struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi)
 		DRM_BRIDGE_OP_DETECT |
 		DRM_BRIDGE_OP_EDID;
 
-	drm_bridge_add(bridge);
+	ret = devm_drm_bridge_add(&hdmi->pdev->dev, bridge);
+	if (ret)
+		return ret;
 
 	ret = drm_bridge_attach(hdmi->encoder, bridge, NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR);
 	if (ret)
-		goto fail;
+		return ret;
 
-	return bridge;
+	hdmi->bridge = bridge;
 
-fail:
-	if (bridge)
-		msm_hdmi_bridge_destroy(bridge);
-
-	return ERR_PTR(ret);
+	return 0;
 }
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
index bfa827b47989..9ce0ffa35417 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
@@ -147,9 +147,8 @@  int msm_hdmi_hpd_enable(struct drm_bridge *bridge)
 	return ret;
 }
 
-void msm_hdmi_hpd_disable(struct hdmi_bridge *hdmi_bridge)
+void msm_hdmi_hpd_disable(struct hdmi *hdmi)
 {
-	struct hdmi *hdmi = hdmi_bridge->hdmi;
 	const struct hdmi_platform_config *config = hdmi->config;
 	struct device *dev = &hdmi->pdev->dev;
 	int ret;