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[PATCH v1 3/5] drm/msm/dp: delete EV_HPD_INIT_SETUP

Kuogee Hsieh posted 5 patches 2 years, 7 months ago
There is a newer version of this series
[PATCH v1 3/5] drm/msm/dp: delete EV_HPD_INIT_SETUP
Posted by Kuogee Hsieh 2 years, 7 months ago 
EV_HPD_INIT_SETUP flag is used to trigger the initialization of external
DP host controller. Since external DP host controller initialization had
been incorporated into pm_runtime_resume(), this flag become obsolete.
Lets get rid of it.

Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
---
 drivers/gpu/drm/msm/dp/dp_display.c | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 2c5706a..44580c2 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -55,7 +55,6 @@ enum {
 enum {
 	EV_NO_EVENT,
 	/* hpd events */
-	EV_HPD_INIT_SETUP,
 	EV_HPD_PLUG_INT,
 	EV_IRQ_HPD_INT,
 	EV_HPD_UNPLUG_INT,
@@ -1119,9 +1118,6 @@ static int hpd_event_thread(void *data)
 		spin_unlock_irqrestore(&dp_priv->event_lock, flag);
 
 		switch (todo->event_id) {
-		case EV_HPD_INIT_SETUP:
-			dp_display_host_init(dp_priv);
-			break;
 		case EV_HPD_PLUG_INT:
 			dp_hpd_plug_handle(dp_priv, todo->data);
 			break;
@@ -1483,15 +1479,7 @@ void __exit msm_dp_unregister(void)
 
 void msm_dp_irq_postinstall(struct msm_dp *dp_display)
 {
-	struct dp_display_private *dp;
-
-	if (!dp_display)
-		return;
-
-	dp = container_of(dp_display, struct dp_display_private, dp_display);
 
-	if (!dp_display->is_edp)
-		dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 0);
 }
 
 bool msm_dp_wide_bus_available(const struct msm_dp *dp_display)
-- 
2.7.4
Re: [PATCH v1 3/5] drm/msm/dp: delete EV_HPD_INIT_SETUP
Posted by Dmitry Baryshkov 2 years, 7 months ago 
On 08/07/2023 02:52, Kuogee Hsieh wrote:
> EV_HPD_INIT_SETUP flag is used to trigger the initialization of external
> DP host controller. Since external DP host controller initialization had
> been incorporated into pm_runtime_resume(), this flag become obsolete.
> Lets get rid of it.
> 
> Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
> ---
>   drivers/gpu/drm/msm/dp/dp_display.c | 12 ------------
>   1 file changed, 12 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
> index 2c5706a..44580c2 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -55,7 +55,6 @@ enum {
>   enum {
>   	EV_NO_EVENT,
>   	/* hpd events */
> -	EV_HPD_INIT_SETUP,
>   	EV_HPD_PLUG_INT,
>   	EV_IRQ_HPD_INT,
>   	EV_HPD_UNPLUG_INT,
> @@ -1119,9 +1118,6 @@ static int hpd_event_thread(void *data)
>   		spin_unlock_irqrestore(&dp_priv->event_lock, flag);
>   
>   		switch (todo->event_id) {
> -		case EV_HPD_INIT_SETUP:
> -			dp_display_host_init(dp_priv);
> -			break;
>   		case EV_HPD_PLUG_INT:
>   			dp_hpd_plug_handle(dp_priv, todo->data);
>   			break;
> @@ -1483,15 +1479,7 @@ void __exit msm_dp_unregister(void)
>   
>   void msm_dp_irq_postinstall(struct msm_dp *dp_display)
>   {
> -	struct dp_display_private *dp;
> -
> -	if (!dp_display)
> -		return;
> -
> -	dp = container_of(dp_display, struct dp_display_private, dp_display);
>   
> -	if (!dp_display->is_edp)
> -		dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 0);
>   }

Why do you keep an empty function?

>   
>   bool msm_dp_wide_bus_available(const struct msm_dp *dp_display)

-- 
With best wishes
Dmitry
Re: [PATCH v1 3/5] drm/msm/dp: delete EV_HPD_INIT_SETUP
Posted by Dmitry Baryshkov 2 years, 7 months ago 
On 08/07/2023 02:52, Kuogee Hsieh wrote:
> EV_HPD_INIT_SETUP flag is used to trigger the initialization of external
> DP host controller. Since external DP host controller initialization had
> been incorporated into pm_runtime_resume(), this flag become obsolete.
> Lets get rid of it.

And another question. Between patches #2 and #3 we have both INIT_SETUP 
event and the PM doing dp_display_host_init(). Will it work correctly?

> 
> Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
> ---
>   drivers/gpu/drm/msm/dp/dp_display.c | 12 ------------
>   1 file changed, 12 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
> index 2c5706a..44580c2 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -55,7 +55,6 @@ enum {
>   enum {
>   	EV_NO_EVENT,
>   	/* hpd events */
> -	EV_HPD_INIT_SETUP,
>   	EV_HPD_PLUG_INT,
>   	EV_IRQ_HPD_INT,
>   	EV_HPD_UNPLUG_INT,
> @@ -1119,9 +1118,6 @@ static int hpd_event_thread(void *data)
>   		spin_unlock_irqrestore(&dp_priv->event_lock, flag);
>   
>   		switch (todo->event_id) {
> -		case EV_HPD_INIT_SETUP:
> -			dp_display_host_init(dp_priv);
> -			break;
>   		case EV_HPD_PLUG_INT:
>   			dp_hpd_plug_handle(dp_priv, todo->data);
>   			break;
> @@ -1483,15 +1479,7 @@ void __exit msm_dp_unregister(void)
>   
>   void msm_dp_irq_postinstall(struct msm_dp *dp_display)
>   {
> -	struct dp_display_private *dp;
> -
> -	if (!dp_display)
> -		return;
> -
> -	dp = container_of(dp_display, struct dp_display_private, dp_display);
>   
> -	if (!dp_display->is_edp)
> -		dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 0);
>   }
>   
>   bool msm_dp_wide_bus_available(const struct msm_dp *dp_display)

-- 
With best wishes
Dmitry
Re: [PATCH v1 3/5] drm/msm/dp: delete EV_HPD_INIT_SETUP
Posted by Kuogee Hsieh 2 years, 7 months ago 
On 7/7/2023 5:34 PM, Dmitry Baryshkov wrote:
> On 08/07/2023 02:52, Kuogee Hsieh wrote:
>> EV_HPD_INIT_SETUP flag is used to trigger the initialization of external
>> DP host controller. Since external DP host controller initialization had
>> been incorporated into pm_runtime_resume(), this flag become obsolete.
>> Lets get rid of it.
>
> And another question. Between patches #2 and #3 we have both 
> INIT_SETUP event and the PM doing dp_display_host_init(). Will it work 
> correctly?

yes,  i had added  if (!dp->core_initialized)  into dp_display_host_init().

should I merge this patch into patch #2?

>
>>
>> Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
>> ---
>>   drivers/gpu/drm/msm/dp/dp_display.c | 12 ------------
>>   1 file changed, 12 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c 
>> b/drivers/gpu/drm/msm/dp/dp_display.c
>> index 2c5706a..44580c2 100644
>> --- a/drivers/gpu/drm/msm/dp/dp_display.c
>> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
>> @@ -55,7 +55,6 @@ enum {
>>   enum {
>>       EV_NO_EVENT,
>>       /* hpd events */
>> -    EV_HPD_INIT_SETUP,
>>       EV_HPD_PLUG_INT,
>>       EV_IRQ_HPD_INT,
>>       EV_HPD_UNPLUG_INT,
>> @@ -1119,9 +1118,6 @@ static int hpd_event_thread(void *data)
>>           spin_unlock_irqrestore(&dp_priv->event_lock, flag);
>>             switch (todo->event_id) {
>> -        case EV_HPD_INIT_SETUP:
>> -            dp_display_host_init(dp_priv);
>> -            break;
>>           case EV_HPD_PLUG_INT:
>>               dp_hpd_plug_handle(dp_priv, todo->data);
>>               break;
>> @@ -1483,15 +1479,7 @@ void __exit msm_dp_unregister(void)
>>     void msm_dp_irq_postinstall(struct msm_dp *dp_display)
>>   {
>> -    struct dp_display_private *dp;
>> -
>> -    if (!dp_display)
>> -        return;
>> -
>> -    dp = container_of(dp_display, struct dp_display_private, 
>> dp_display);
>>   -    if (!dp_display->is_edp)
>> -        dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 0);
>>   }
>>     bool msm_dp_wide_bus_available(const struct msm_dp *dp_display)
>
Re: [PATCH v1 3/5] drm/msm/dp: delete EV_HPD_INIT_SETUP
Posted by Dmitry Baryshkov 2 years, 7 months ago 
On 10/07/2023 19:52, Kuogee Hsieh wrote:
> 
> On 7/7/2023 5:34 PM, Dmitry Baryshkov wrote:
>> On 08/07/2023 02:52, Kuogee Hsieh wrote:
>>> EV_HPD_INIT_SETUP flag is used to trigger the initialization of external
>>> DP host controller. Since external DP host controller initialization had
>>> been incorporated into pm_runtime_resume(), this flag become obsolete.
>>> Lets get rid of it.
>>
>> And another question. Between patches #2 and #3 we have both 
>> INIT_SETUP event and the PM doing dp_display_host_init(). Will it work 
>> correctly?
> 
> yes,  i had added  if (!dp->core_initialized)  into dp_display_host_init().
> 
> should I merge this patch into patch #2?

You can remove a call to dp_display_host_init() in patch #2 and then 
drop EV_HOST_INIT / msm_dp_irq_postinstall() here.

> 
>>
>>>
>>> Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
>>> ---
>>>   drivers/gpu/drm/msm/dp/dp_display.c | 12 ------------
>>>   1 file changed, 12 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c 
>>> b/drivers/gpu/drm/msm/dp/dp_display.c
>>> index 2c5706a..44580c2 100644
>>> --- a/drivers/gpu/drm/msm/dp/dp_display.c
>>> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
>>> @@ -55,7 +55,6 @@ enum {
>>>   enum {
>>>       EV_NO_EVENT,
>>>       /* hpd events */
>>> -    EV_HPD_INIT_SETUP,
>>>       EV_HPD_PLUG_INT,
>>>       EV_IRQ_HPD_INT,
>>>       EV_HPD_UNPLUG_INT,
>>> @@ -1119,9 +1118,6 @@ static int hpd_event_thread(void *data)
>>>           spin_unlock_irqrestore(&dp_priv->event_lock, flag);
>>>             switch (todo->event_id) {
>>> -        case EV_HPD_INIT_SETUP:
>>> -            dp_display_host_init(dp_priv);
>>> -            break;
>>>           case EV_HPD_PLUG_INT:
>>>               dp_hpd_plug_handle(dp_priv, todo->data);
>>>               break;
>>> @@ -1483,15 +1479,7 @@ void __exit msm_dp_unregister(void)
>>>     void msm_dp_irq_postinstall(struct msm_dp *dp_display)
>>>   {
>>> -    struct dp_display_private *dp;
>>> -
>>> -    if (!dp_display)
>>> -        return;
>>> -
>>> -    dp = container_of(dp_display, struct dp_display_private, 
>>> dp_display);
>>>   -    if (!dp_display->is_edp)
>>> -        dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 0);
>>>   }
>>>     bool msm_dp_wide_bus_available(const struct msm_dp *dp_display)
>>

-- 
With best wishes
Dmitry

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