diff options
| author | Helen Fornazier <helen.koike@collabora.com> | 2019-03-06 17:42:43 -0500 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-03-19 16:33:07 -0400 |
| commit | 6f3f3e11999b192e39404c49b584b7aca4cb1ecd (patch) | |
| tree | 4bb57f79308b069701a01198c549694960a8c5ab /drivers/media/platform | |
| parent | 43e3b726f5e1b34e4d6bdacc72fdde84cfffaf13 (diff) | |
media: vimc: stream: init/terminate the first entity
The s_stream callback was not being called for the first entity in the
stream pipeline array.
Instead of verifying the type of the node (video or subdevice) and
calling s_stream from the second entity in the pipeline, do this process
for all the entities in the pipeline for consistency.
The previous code was not a problem because the first entity is a video
device and not a subdevice, but this patch prepares vimc to allow
setting some configuration in the entity before calling s_stream.
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Tested-by: André Almeida <andre.almeida@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil-cisco@xs4all.nl: fix line-too-long warning]
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/platform')
| -rw-r--r-- | drivers/media/platform/vimc/vimc-streamer.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/drivers/media/platform/vimc/vimc-streamer.c b/drivers/media/platform/vimc/vimc-streamer.c index b7c1fdef5f0d..6fc18fea2e45 100644 --- a/drivers/media/platform/vimc/vimc-streamer.c +++ b/drivers/media/platform/vimc/vimc-streamer.c @@ -46,19 +46,18 @@ static struct media_entity *vimc_get_source_entity(struct media_entity *ent) */ static void vimc_streamer_pipeline_terminate(struct vimc_stream *stream) { - struct media_entity *entity; + struct vimc_ent_device *ved; struct v4l2_subdev *sd; while (stream->pipe_size) { stream->pipe_size--; - entity = stream->ved_pipeline[stream->pipe_size]->ent; - entity = vimc_get_source_entity(entity); + ved = stream->ved_pipeline[stream->pipe_size]; stream->ved_pipeline[stream->pipe_size] = NULL; - if (!is_media_entity_v4l2_subdev(entity)) + if (!is_media_entity_v4l2_subdev(ved->ent)) continue; - sd = media_entity_to_v4l2_subdev(entity); + sd = media_entity_to_v4l2_subdev(ved->ent); v4l2_subdev_call(sd, video, s_stream, 0); } } @@ -89,18 +88,25 @@ static int vimc_streamer_pipeline_init(struct vimc_stream *stream, } stream->ved_pipeline[stream->pipe_size++] = ved; + if (is_media_entity_v4l2_subdev(ved->ent)) { + sd = media_entity_to_v4l2_subdev(ved->ent); + ret = v4l2_subdev_call(sd, video, s_stream, 1); + if (ret && ret != -ENOIOCTLCMD) { + pr_err("subdev_call error %s\n", + ved->ent->name); + vimc_streamer_pipeline_terminate(stream); + return ret; + } + } + entity = vimc_get_source_entity(ved->ent); /* Check if the end of the pipeline was reached*/ if (!entity) return 0; + /* Get the next device in the pipeline */ if (is_media_entity_v4l2_subdev(entity)) { sd = media_entity_to_v4l2_subdev(entity); - ret = v4l2_subdev_call(sd, video, s_stream, 1); - if (ret && ret != -ENOIOCTLCMD) { - vimc_streamer_pipeline_terminate(stream); - return ret; - } ved = v4l2_get_subdevdata(sd); } else { vdev = container_of(entity, |