[libcamera-devel] [PATCH 2/5] media: entity: Add link_type() helper

[Daniel Scally]

Hi Laurent

On 14/12/2021 21:54, Laurent Pinchart wrote:
> Hi Daniel,
>
> Thank you for the patch.
>
> On Mon, Dec 13, 2021 at 11:28:46PM +0000, Daniel Scally wrote:
>> Now we have three types of media link, printing the right name during
>> debug output is slightly more complicated. Add a helper function to
>> make it easier.
>>
>> Signed-off-by: Daniel Scally <djrscally at gmail.com>
>> ---
>> Changes since the rfc:
>>
>> 	- new patch
>>
>>  drivers/media/mc/mc-entity.c | 18 +++++++++++++++---
>>  1 file changed, 15 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/media/mc/mc-entity.c b/drivers/media/mc/mc-entity.c
>> index f40f41977142..d79eb88bc167 100644
>> --- a/drivers/media/mc/mc-entity.c
>> +++ b/drivers/media/mc/mc-entity.c
>> @@ -60,6 +60,20 @@ static inline const char *intf_type(struct media_interface *intf)
>>  	}
>>  };
>>  
>> +static inline const char *link_type(struct media_link *link)
> This could be named link_type_name() to avoid confusion with a function
> that would return the link type.


Probably yeah - I'll do that in v2

> Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>


Thank you

>
>> +{
>> +	switch (link->flags & MEDIA_LNK_FL_LINK_TYPE) {
>> +	case MEDIA_LNK_FL_DATA_LINK:
>> +		return "data";
>> +	case MEDIA_LNK_FL_INTERFACE_LINK:
>> +		return "interface";
>> +	case MEDIA_LNK_FL_ANCILLARY_LINK:
>> +		return "ancillary";
>> +	default:
>> +		return "unknown";
>> +	}
>> +}
>> +
>>  __must_check int __media_entity_enum_init(struct media_entity_enum *ent_enum,
>>  					  int idx_max)
>>  {
>> @@ -107,9 +121,7 @@ static void dev_dbg_obj(const char *event_name,  struct media_gobj *gobj)
>>  
>>  		dev_dbg(gobj->mdev->dev,
>>  			"%s id %u: %s link id %u ==> id %u\n",
>> -			event_name, media_id(gobj),
>> -			media_type(link->gobj0) == MEDIA_GRAPH_PAD ?
>> -				"data" : "interface",
>> +			event_name, media_id(gobj), link_type(link),
>>  			media_id(link->gobj0),
>>  			media_id(link->gobj1));
>>  		break;