media: mc: entity: Add has_pad_interdep entity operation
Add a new media entity operation, has_pad_interdep. The optional op is
used to discover the pad interdependencies inside an entity during the
pipeline construction.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
diff --git a/drivers/media/mc/mc-entity.c b/drivers/media/mc/mc-entity.c
index 0a5c92b..831076b3 100644
--- a/drivers/media/mc/mc-entity.c
+++ b/drivers/media/mc/mc-entity.c
@@ -232,7 +232,10 @@ EXPORT_SYMBOL_GPL(media_entity_pads_init);
* and enabling one of the pads means that the other pad will become "locked"
* and doesn't allow configuration changes.
*
- * For the time being all pads are considered interdependent.
+ * This function uses the &media_entity_operations.has_pad_interdep() operation
+ * to check the dependency inside the entity between @pad0 and @pad1. If the
+ * has_pad_interdep operation is not implemented, all pads of the entity are
+ * considered to be interdependent.
*/
static bool media_entity_has_pad_interdep(struct media_entity *entity,
unsigned int pad0, unsigned int pad1)
@@ -244,7 +247,10 @@ static bool media_entity_has_pad_interdep(struct media_entity *entity,
(MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_SOURCE))
return false;
- return true;
+ if (!entity->ops || !entity->ops->has_pad_interdep)
+ return true;
+
+ return entity->ops->has_pad_interdep(entity, pad0, pad1);
}
static struct media_entity *
