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-rw-r--r--drivers/media/media-entity.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c
index 3498551e618e..0b1cb3559140 100644
--- a/drivers/media/media-entity.c
+++ b/drivers/media/media-entity.c
@@ -662,6 +662,32 @@ static void __media_entity_remove_link(struct media_entity *entity,
kfree(link);
}
+int media_get_pad_index(struct media_entity *entity, bool is_sink,
+ enum media_pad_signal_type sig_type)
+{
+ int i;
+ bool pad_is_sink;
+
+ if (!entity)
+ return -EINVAL;
+
+ for (i = 0; i < entity->num_pads; i++) {
+ if (entity->pads[i].flags == MEDIA_PAD_FL_SINK)
+ pad_is_sink = true;
+ else if (entity->pads[i].flags == MEDIA_PAD_FL_SOURCE)
+ pad_is_sink = false;
+ else
+ continue; /* This is an error! */
+
+ if (pad_is_sink != is_sink)
+ continue;
+ if (entity->pads[i].sig_type == sig_type)
+ return i;
+ }
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(media_get_pad_index);
+
int
media_create_pad_link(struct media_entity *source, u16 source_pad,
struct media_entity *sink, u16 sink_pad, u32 flags)