| Message ID | 20200415013044.1778572-4-helen.koike@collabora.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: add v4l2_pipeline_stream_{enable, disable} helpers | expand |
Hi Helen, Thanks for your work. On 2020-04-14 22:30:43 -0300, Helen Koike wrote: > Use v4l2_pipeline_stream_{enable,disable} to call .s_stream() subdevice > callbacks through the pipeline. > > Tested by streaming on Scarlet Chromebook. > > Signed-off-by: Helen Koike <helen.koike@collabora.com> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> > > --- > > Changes in v3: > - rebase on top of new helpers prototypes > > Changes in v2: > - rebase on top of new helpers prototypes > > drivers/staging/media/rkisp1/rkisp1-capture.c | 76 +------------------ > 1 file changed, 3 insertions(+), 73 deletions(-) > > diff --git a/drivers/staging/media/rkisp1/rkisp1-capture.c b/drivers/staging/media/rkisp1/rkisp1-capture.c > index 24fe6a7888aa4..a18f1668e3563 100644 > --- a/drivers/staging/media/rkisp1/rkisp1-capture.c > +++ b/drivers/staging/media/rkisp1/rkisp1-capture.c > @@ -838,71 +838,6 @@ static void rkisp1_return_all_buffers(struct rkisp1_capture *cap, > spin_unlock_irqrestore(&cap->buf.lock, flags); > } > > -/* > - * rkisp1_pipeline_sink_walk - Walk through the pipeline and call cb > - * @from: entity at which to start pipeline walk > - * @until: entity at which to stop pipeline walk > - * > - * Walk the entities chain starting at the pipeline video node and stop > - * all subdevices in the chain. > - * > - * If the until argument isn't NULL, stop the pipeline walk when reaching the > - * until entity. This is used to disable a partially started pipeline due to a > - * subdev start error. > - */ > -static int rkisp1_pipeline_sink_walk(struct media_entity *from, > - struct media_entity *until, > - int (*cb)(struct media_entity *from, > - struct media_entity *curr)) > -{ > - struct media_entity *entity = from; > - struct media_pad *pad; > - unsigned int i; > - int ret; > - > - while (1) { > - pad = NULL; > - /* Find remote source pad */ > - for (i = 0; i < entity->num_pads; i++) { > - struct media_pad *spad = &entity->pads[i]; > - > - if (!(spad->flags & MEDIA_PAD_FL_SINK)) > - continue; > - pad = media_entity_remote_pad(spad); > - if (pad && is_media_entity_v4l2_subdev(pad->entity)) > - break; > - } > - if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) > - break; > - > - entity = pad->entity; > - if (entity == until) > - break; > - > - ret = cb(from, entity); > - if (ret) > - return ret; > - } > - > - return 0; > -} > - > -static int rkisp1_pipeline_disable_cb(struct media_entity *from, > - struct media_entity *curr) > -{ > - struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(curr); > - > - return v4l2_subdev_call(sd, video, s_stream, false); > -} > - > -static int rkisp1_pipeline_enable_cb(struct media_entity *from, > - struct media_entity *curr) > -{ > - struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(curr); > - > - return v4l2_subdev_call(sd, video, s_stream, true); > -} > - > static void rkisp1_stream_stop(struct rkisp1_capture *cap) > { > int ret; > @@ -929,11 +864,7 @@ static void rkisp1_vb2_stop_streaming(struct vb2_queue *queue) > > rkisp1_stream_stop(cap); > media_pipeline_stop(&node->vdev.entity); > - ret = rkisp1_pipeline_sink_walk(&node->vdev.entity, NULL, > - rkisp1_pipeline_disable_cb); > - if (ret) > - dev_err(rkisp1->dev, > - "pipeline stream-off failed error:%d\n", ret); > + v4l2_pipeline_stream_disable(&node->vdev, &cap->rkisp1->pipe); > > rkisp1_return_all_buffers(cap, VB2_BUF_STATE_ERROR); > > @@ -1005,8 +936,7 @@ rkisp1_vb2_start_streaming(struct vb2_queue *queue, unsigned int count) > rkisp1_stream_start(cap); > > /* start sub-devices */ > - ret = rkisp1_pipeline_sink_walk(entity, NULL, > - rkisp1_pipeline_enable_cb); > + ret = v4l2_pipeline_stream_enable(&cap->vnode.vdev, &cap->rkisp1->pipe); > if (ret) > goto err_stop_stream; > > @@ -1019,7 +949,7 @@ rkisp1_vb2_start_streaming(struct vb2_queue *queue, unsigned int count) > return 0; > > err_pipe_disable: > - rkisp1_pipeline_sink_walk(entity, NULL, rkisp1_pipeline_disable_cb); > + v4l2_pipeline_stream_disable(&cap->vnode.vdev, &cap->rkisp1->pipe); > err_stop_stream: > rkisp1_stream_stop(cap); > v4l2_pipeline_pm_put(entity); > -- > 2.26.0 >
diff --git a/drivers/staging/media/rkisp1/rkisp1-capture.c b/drivers/staging/media/rkisp1/rkisp1-capture.c index 24fe6a7888aa4..a18f1668e3563 100644 --- a/drivers/staging/media/rkisp1/rkisp1-capture.c +++ b/drivers/staging/media/rkisp1/rkisp1-capture.c @@ -838,71 +838,6 @@ static void rkisp1_return_all_buffers(struct rkisp1_capture *cap, spin_unlock_irqrestore(&cap->buf.lock, flags); } -/* - * rkisp1_pipeline_sink_walk - Walk through the pipeline and call cb - * @from: entity at which to start pipeline walk - * @until: entity at which to stop pipeline walk - * - * Walk the entities chain starting at the pipeline video node and stop - * all subdevices in the chain. - * - * If the until argument isn't NULL, stop the pipeline walk when reaching the - * until entity. This is used to disable a partially started pipeline due to a - * subdev start error. - */ -static int rkisp1_pipeline_sink_walk(struct media_entity *from, - struct media_entity *until, - int (*cb)(struct media_entity *from, - struct media_entity *curr)) -{ - struct media_entity *entity = from; - struct media_pad *pad; - unsigned int i; - int ret; - - while (1) { - pad = NULL; - /* Find remote source pad */ - for (i = 0; i < entity->num_pads; i++) { - struct media_pad *spad = &entity->pads[i]; - - if (!(spad->flags & MEDIA_PAD_FL_SINK)) - continue; - pad = media_entity_remote_pad(spad); - if (pad && is_media_entity_v4l2_subdev(pad->entity)) - break; - } - if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) - break; - - entity = pad->entity; - if (entity == until) - break; - - ret = cb(from, entity); - if (ret) - return ret; - } - - return 0; -} - -static int rkisp1_pipeline_disable_cb(struct media_entity *from, - struct media_entity *curr) -{ - struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(curr); - - return v4l2_subdev_call(sd, video, s_stream, false); -} - -static int rkisp1_pipeline_enable_cb(struct media_entity *from, - struct media_entity *curr) -{ - struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(curr); - - return v4l2_subdev_call(sd, video, s_stream, true); -} - static void rkisp1_stream_stop(struct rkisp1_capture *cap) { int ret; @@ -929,11 +864,7 @@ static void rkisp1_vb2_stop_streaming(struct vb2_queue *queue) rkisp1_stream_stop(cap); media_pipeline_stop(&node->vdev.entity); - ret = rkisp1_pipeline_sink_walk(&node->vdev.entity, NULL, - rkisp1_pipeline_disable_cb); - if (ret) - dev_err(rkisp1->dev, - "pipeline stream-off failed error:%d\n", ret); + v4l2_pipeline_stream_disable(&node->vdev, &cap->rkisp1->pipe); rkisp1_return_all_buffers(cap, VB2_BUF_STATE_ERROR); @@ -1005,8 +936,7 @@ rkisp1_vb2_start_streaming(struct vb2_queue *queue, unsigned int count) rkisp1_stream_start(cap); /* start sub-devices */ - ret = rkisp1_pipeline_sink_walk(entity, NULL, - rkisp1_pipeline_enable_cb); + ret = v4l2_pipeline_stream_enable(&cap->vnode.vdev, &cap->rkisp1->pipe); if (ret) goto err_stop_stream; @@ -1019,7 +949,7 @@ rkisp1_vb2_start_streaming(struct vb2_queue *queue, unsigned int count) return 0; err_pipe_disable: - rkisp1_pipeline_sink_walk(entity, NULL, rkisp1_pipeline_disable_cb); + v4l2_pipeline_stream_disable(&cap->vnode.vdev, &cap->rkisp1->pipe); err_stop_stream: rkisp1_stream_stop(cap); v4l2_pipeline_pm_put(entity);
Use v4l2_pipeline_stream_{enable,disable} to call .s_stream() subdevice callbacks through the pipeline. Tested by streaming on Scarlet Chromebook. Signed-off-by: Helen Koike <helen.koike@collabora.com> --- Changes in v3: - rebase on top of new helpers prototypes Changes in v2: - rebase on top of new helpers prototypes drivers/staging/media/rkisp1/rkisp1-capture.c | 76 +------------------ 1 file changed, 3 insertions(+), 73 deletions(-)