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

Daniel Scally
2021-12-13T23:29:09Z

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@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)
+{
+ 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;
--
2.25.1