Re: [PATCH v5 1/9] drm_dp_cec: add connector info support.

[Hans Verkuil <hverkuil-cisco@xs4all.nl>]

On 8/8/19 10:18 AM, Hans Verkuil wrote:
> Hi Dariusz,
> 
> On 8/7/19 10:52 AM, Dariusz Marcinkiewicz wrote:
>> Pass the connector info to the CEC adapter. This makes it possible
>> to associate the CEC adapter with the corresponding drm connector.
>>
>> Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
>> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
>> ---
>>  .../display/amdgpu_dm/amdgpu_dm_mst_types.c   |  2 +-
>>  drivers/gpu/drm/drm_dp_cec.c                  | 25 ++++++++++++-------
>>  drivers/gpu/drm/i915/intel_dp.c               |  4 +--
>>  drivers/gpu/drm/nouveau/nouveau_connector.c   |  3 +--
>>  include/drm/drm_dp_helper.h                   | 14 +++++------
>>  5 files changed, 26 insertions(+), 22 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
>> index 6e205ee36ac3b..7f2eb4eb1035b 100644
>> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
>> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
>> @@ -394,7 +394,7 @@ void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
>>  
>>  	drm_dp_aux_register(&aconnector->dm_dp_aux.aux);
>>  	drm_dp_cec_register_connector(&aconnector->dm_dp_aux.aux,
>> -				      aconnector->base.name, dm->adev->dev);
>> +				      &aconnector->base);
>>  	aconnector->mst_mgr.cbs = &dm_mst_cbs;
>>  	drm_dp_mst_topology_mgr_init(
>>  		&aconnector->mst_mgr,
>> diff --git a/drivers/gpu/drm/drm_dp_cec.c b/drivers/gpu/drm/drm_dp_cec.c
>> index b15cee85b702b..b457c16c3a8bb 100644
>> --- a/drivers/gpu/drm/drm_dp_cec.c
>> +++ b/drivers/gpu/drm/drm_dp_cec.c
>> @@ -8,7 +8,9 @@
>>  #include <linux/kernel.h>
>>  #include <linux/module.h>
>>  #include <linux/slab.h>
>> +#include <drm/drm_connector.h>
>>  #include <drm/drm_dp_helper.h>
>> +#include <drm/drmP.h>
>>  #include <media/cec.h>
>>  
>>  /*
>> @@ -295,7 +297,10 @@ static void drm_dp_cec_unregister_work(struct work_struct *work)
>>   */
>>  void drm_dp_cec_set_edid(struct drm_dp_aux *aux, const struct edid *edid)
>>  {
>> -	u32 cec_caps = CEC_CAP_DEFAULTS | CEC_CAP_NEEDS_HPD;
>> +	struct drm_connector *connector = aux->cec.connector;
>> +	u32 cec_caps = CEC_CAP_DEFAULTS | CEC_CAP_NEEDS_HPD |
>> +		       CEC_CAP_CONNECTOR_INFO;
>> +	struct cec_connector_info conn_info;
>>  	unsigned int num_las = 1;
>>  	u8 cap;
>>  
>> @@ -344,13 +349,17 @@ void drm_dp_cec_set_edid(struct drm_dp_aux *aux, const struct edid *edid)
>>  
>>  	/* Create a new adapter */
>>  	aux->cec.adap = cec_allocate_adapter(&drm_dp_cec_adap_ops,
>> -					     aux, aux->cec.name, cec_caps,
>> +					     aux, connector->name, cec_caps,
>>  					     num_las);
>>  	if (IS_ERR(aux->cec.adap)) {
>>  		aux->cec.adap = NULL;
>>  		goto unlock;
>>  	}
>> -	if (cec_register_adapter(aux->cec.adap, aux->cec.parent)) {
>> +
>> +	cec_fill_conn_info_from_drm(&conn_info, connector);
>> +	cec_s_conn_info(aux->cec.adap, &conn_info);
>> +
>> +	if (cec_register_adapter(aux->cec.adap, connector->dev->dev)) {
>>  		cec_delete_adapter(aux->cec.adap);
>>  		aux->cec.adap = NULL;
>>  	} else {
>> @@ -406,22 +415,20 @@ EXPORT_SYMBOL(drm_dp_cec_unset_edid);
>>  /**
>>   * drm_dp_cec_register_connector() - register a new connector
>>   * @aux: DisplayPort AUX channel
>> - * @name: name of the CEC device
>> - * @parent: parent device
>> + * @connector: drm connector
>>   *
>>   * A new connector was registered with associated CEC adapter name and
>>   * CEC adapter parent device. After registering the name and parent
>>   * drm_dp_cec_set_edid() is called to check if the connector supports
>>   * CEC and to register a CEC adapter if that is the case.
>>   */
>> -void drm_dp_cec_register_connector(struct drm_dp_aux *aux, const char *name,
>> -				   struct device *parent)
>> +void drm_dp_cec_register_connector(struct drm_dp_aux *aux,
>> +				   struct drm_connector *connector)
>>  {
>>  	WARN_ON(aux->cec.adap);
>>  	if (WARN_ON(!aux->transfer))
>>  		return;
>> -	aux->cec.name = name;
>> -	aux->cec.parent = parent;
>> +	aux->cec.connector = connector;
>>  	INIT_DELAYED_WORK(&aux->cec.unregister_work,
>>  			  drm_dp_cec_unregister_work);
>>  }
>> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
>> index 4336df46fe782..79c8afdbc4869 100644
>> --- a/drivers/gpu/drm/i915/intel_dp.c
>> +++ b/drivers/gpu/drm/i915/intel_dp.c
>> @@ -5693,7 +5693,6 @@ static int
>>  intel_dp_connector_register(struct drm_connector *connector)
>>  {
>>  	struct intel_dp *intel_dp = intel_attached_dp(connector);
>> -	struct drm_device *dev = connector->dev;
>>  	int ret;
>>  
>>  	ret = intel_connector_register(connector);
>> @@ -5708,8 +5707,7 @@ intel_dp_connector_register(struct drm_connector *connector)
>>  	intel_dp->aux.dev = connector->kdev;
>>  	ret = drm_dp_aux_register(&intel_dp->aux);
>>  	if (!ret)
>> -		drm_dp_cec_register_connector(&intel_dp->aux,
>> -					      connector->name, dev->dev);
>> +		drm_dp_cec_register_connector(&intel_dp->aux, connector);
>>  	return ret;
>>  }
>>  
>> diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
>> index 4116ee62adafe..4438824ca88b0 100644
>> --- a/drivers/gpu/drm/nouveau/nouveau_connector.c
>> +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
>> @@ -1413,8 +1413,7 @@ nouveau_connector_create(struct drm_device *dev,
>>  	switch (type) {
>>  	case DRM_MODE_CONNECTOR_DisplayPort:
>>  	case DRM_MODE_CONNECTOR_eDP:
>> -		drm_dp_cec_register_connector(&nv_connector->aux,
>> -					      connector->name, dev->dev);
>> +		drm_dp_cec_register_connector(&nv_connector->aux, connector);
>>  		break;
>>  	}
>>  
>> diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
>> index 3fc534ee81746..729af0b812909 100644
>> --- a/include/drm/drm_dp_helper.h
>> +++ b/include/drm/drm_dp_helper.h
>> @@ -1221,6 +1221,7 @@ struct drm_dp_aux_msg {
>>  
>>  struct cec_adapter;
>>  struct edid;
>> +struct drm_connector;
>>  
>>  /**
>>   * struct drm_dp_aux_cec - DisplayPort CEC-Tunneling-over-AUX
>> @@ -1233,8 +1234,7 @@ struct edid;
>>  struct drm_dp_aux_cec {
>>  	struct mutex lock;
>>  	struct cec_adapter *adap;
>> -	const char *name;
>> -	struct device *parent;
>> +	struct drm_connector *connector;
>>  	struct delayed_work unregister_work;
>>  };
> 
> You probably saw the kbuild test robot mail as well: the comments before this
> struct need to be updated.
> 
> Also, this series is against an older tree: intel_dp/hdmi.c is now moved to
> a i915/display/ directory.
> 
> Can you rebase and post a v6 for this series? Make sure to post to dri-devel as
> well! The various drm maintainers of these drivers have to review the code as well
> and give an Acked-by! I noticed that you only posted it to linux-media, but
> that's not enough. In fact, it would be great if you can Cc each patch to the
> corresponding maintainer as well (see the MAINTAINERS file).
> 
> I've started testing this series on my hardware and I will post Tested-by tags
> whenever I finished testing each patch for which I have HW.

When you make a v6, please don't forget to add my Tested-by lines!

There is only one more patch that I need to test (8/9), I'll try to do
that tomorrow.

Patch 6/9 (sti) I cannot test since I don't have the hardware. Still,
being able to test 8 out of 9 patches ain't bad and is a clear sign
I have way too much hardware :-)

Regards,

	Hans

> 
> Thanks!
> 
> 	Hans
> 
>>  
>> @@ -1431,8 +1431,8 @@ drm_dp_has_quirk(const struct drm_dp_desc *desc, enum drm_dp_quirk quirk)
>>  
>>  #ifdef CONFIG_DRM_DP_CEC
>>  void drm_dp_cec_irq(struct drm_dp_aux *aux);
>> -void drm_dp_cec_register_connector(struct drm_dp_aux *aux, const char *name,
>> -				   struct device *parent);
>> +void drm_dp_cec_register_connector(struct drm_dp_aux *aux,
>> +				   struct drm_connector *connector);
>>  void drm_dp_cec_unregister_connector(struct drm_dp_aux *aux);
>>  void drm_dp_cec_set_edid(struct drm_dp_aux *aux, const struct edid *edid);
>>  void drm_dp_cec_unset_edid(struct drm_dp_aux *aux);
>> @@ -1441,9 +1441,9 @@ static inline void drm_dp_cec_irq(struct drm_dp_aux *aux)
>>  {
>>  }
>>  
>> -static inline void drm_dp_cec_register_connector(struct drm_dp_aux *aux,
>> -						 const char *name,
>> -						 struct device *parent)
>> +static inline void
>> +drm_dp_cec_register_connector(struct drm_dp_aux *aux,
>> +			      struct drm_connector *connector)
>>  {
>>  }
>>  
>>
>