From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Cc: linux-media@vger.kernel.org, sakari.ailus@linux.intel.com,
Jacopo Mondi <jacopo+renesas@jmondi.org>,
niklas.soderlund+renesas@ragnatech.se,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Hans Verkuil <hverkuil-cisco@xs4all.nl>,
Pratyush Yadav <p.yadav@ti.com>,
Kishon Vijay Abraham <kishon@ti.com>,
satish.nagireddy@getcruise.com, Tomasz Figa <tfiga@chromium.org>
Subject: Re: [PATCH v13 16/34] media: mc: convert pipeline funcs to take media_pad
Date: Mon, 29 Aug 2022 20:21:22 +0300 [thread overview]
Message-ID: <Ywz1kiDmrm0HWeBQ@pendragon.ideasonboard.com> (raw)
In-Reply-To: <20220810121122.3149086-17-tomi.valkeinen@ideasonboard.com>
Hi Tomi,
Thank you for the patch.
On Wed, Aug 10, 2022 at 03:11:04PM +0300, Tomi Valkeinen wrote:
> Now that the pipeline is stored into pads instead of entities, we can
> change the relevant functions to take pads instead of entities.
>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
> ---
> drivers/media/mc/mc-entity.c | 40 ++++++++-----------
> .../samsung/s3c-camif/camif-capture.c | 6 +--
> drivers/media/usb/au0828/au0828-core.c | 8 ++--
> drivers/media/v4l2-core/v4l2-dev.c | 12 +++---
> drivers/staging/media/imx/imx-media-utils.c | 6 +--
> include/media/media-entity.h | 28 ++++++-------
> 6 files changed, 46 insertions(+), 54 deletions(-)
>
> diff --git a/drivers/media/mc/mc-entity.c b/drivers/media/mc/mc-entity.c
> index c89dc782840a..ce72ee749fe6 100644
> --- a/drivers/media/mc/mc-entity.c
> +++ b/drivers/media/mc/mc-entity.c
> @@ -699,29 +699,21 @@ static int media_pipeline_populate(struct media_pipeline *pipe,
> return ret;
> }
>
> -__must_check int __media_pipeline_start(struct media_entity *entity,
> +__must_check int __media_pipeline_start(struct media_pad *pad,
> struct media_pipeline *pipe)
> {
> - struct media_device *mdev = entity->graph_obj.mdev;
> + struct media_device *mdev = pad->entity->graph_obj.mdev;
> struct media_pipeline_pad *err_ppad;
> struct media_pipeline_pad *ppad;
> int ret;
>
> lockdep_assert_held(&mdev->graph_mutex);
>
> - /*
> - * media_pipeline_start(entity) only makes sense with entities that have
> - * a single pad.
> - */
> -
> - if (WARN_ON(entity->num_pads != 1))
> - return -EINVAL;
> -
> /*
> * If the entity is already part of a pipeline, that pipeline must
> * be the same as the pipe given to media_pipeline_start().
> */
> - if (WARN_ON(entity->pads->pipe && entity->pads->pipe != pipe))
> + if (WARN_ON(pad->pipe && pad->pipe != pipe))
> return -EINVAL;
>
> /*
> @@ -738,7 +730,7 @@ __must_check int __media_pipeline_start(struct media_entity *entity,
> * with media_pipeline_pad instances for each pad found during graph
> * walk.
> */
> - ret = media_pipeline_populate(pipe, entity->pads);
> + ret = media_pipeline_populate(pipe, pad);
> if (ret)
> return ret;
>
> @@ -855,22 +847,22 @@ __must_check int __media_pipeline_start(struct media_entity *entity,
> }
> EXPORT_SYMBOL_GPL(__media_pipeline_start);
>
> -__must_check int media_pipeline_start(struct media_entity *entity,
> +__must_check int media_pipeline_start(struct media_pad *pad,
> struct media_pipeline *pipe)
> {
> - struct media_device *mdev = entity->graph_obj.mdev;
> + struct media_device *mdev = pad->entity->graph_obj.mdev;
> int ret;
>
> mutex_lock(&mdev->graph_mutex);
> - ret = __media_pipeline_start(entity, pipe);
> + ret = __media_pipeline_start(pad, pipe);
> mutex_unlock(&mdev->graph_mutex);
> return ret;
> }
> EXPORT_SYMBOL_GPL(media_pipeline_start);
>
> -void __media_pipeline_stop(struct media_entity *entity)
> +void __media_pipeline_stop(struct media_pad *pad)
> {
> - struct media_pipeline *pipe = entity->pads->pipe;
> + struct media_pipeline *pipe = pad->pipe;
> struct media_pipeline_pad *ppad;
>
> /*
> @@ -893,19 +885,19 @@ void __media_pipeline_stop(struct media_entity *entity)
> }
> EXPORT_SYMBOL_GPL(__media_pipeline_stop);
>
> -void media_pipeline_stop(struct media_entity *entity)
> +void media_pipeline_stop(struct media_pad *pad)
> {
> - struct media_device *mdev = entity->graph_obj.mdev;
> + struct media_device *mdev = pad->entity->graph_obj.mdev;
>
> mutex_lock(&mdev->graph_mutex);
> - __media_pipeline_stop(entity);
> + __media_pipeline_stop(pad);
> mutex_unlock(&mdev->graph_mutex);
> }
> EXPORT_SYMBOL_GPL(media_pipeline_stop);
>
> -__must_check int media_pipeline_alloc_start(struct media_entity *entity)
> +__must_check int media_pipeline_alloc_start(struct media_pad *pad)
> {
> - struct media_device *mdev = entity->graph_obj.mdev;
> + struct media_device *mdev = pad->entity->graph_obj.mdev;
> struct media_pipeline *pipe;
> int ret;
> bool new_pipe = false;
> @@ -916,7 +908,7 @@ __must_check int media_pipeline_alloc_start(struct media_entity *entity)
> * Is the entity already part of a pipeline? If not, we need to allocate
> * a pipe.
> */
> - pipe = media_entity_pipeline(entity);
> + pipe = media_pad_pipeline(pad);
> if (!pipe) {
> pipe = kzalloc(sizeof(*pipe), GFP_KERNEL);
>
> @@ -929,7 +921,7 @@ __must_check int media_pipeline_alloc_start(struct media_entity *entity)
> pipe->allocated = true;
> }
>
> - ret = __media_pipeline_start(entity, pipe);
> + ret = __media_pipeline_start(pad, pipe);
> if (ret) {
> if (new_pipe)
> kfree(pipe);
> diff --git a/drivers/media/platform/samsung/s3c-camif/camif-capture.c b/drivers/media/platform/samsung/s3c-camif/camif-capture.c
> index 140854ab4dd8..0189b8a33032 100644
> --- a/drivers/media/platform/samsung/s3c-camif/camif-capture.c
> +++ b/drivers/media/platform/samsung/s3c-camif/camif-capture.c
> @@ -848,13 +848,13 @@ static int s3c_camif_streamon(struct file *file, void *priv,
> if (s3c_vp_active(vp))
> return 0;
>
> - ret = media_pipeline_start(sensor, camif->m_pipeline);
> + ret = media_pipeline_start(sensor->pads, camif->m_pipeline);
> if (ret < 0)
> return ret;
>
> ret = camif_pipeline_validate(camif);
> if (ret < 0) {
> - media_pipeline_stop(sensor);
> + media_pipeline_stop(sensor->pads);
> return ret;
> }
>
> @@ -878,7 +878,7 @@ static int s3c_camif_streamoff(struct file *file, void *priv,
>
> ret = vb2_streamoff(&vp->vb_queue, type);
> if (ret == 0)
> - media_pipeline_stop(&camif->sensor.sd->entity);
> + media_pipeline_stop(camif->sensor.sd->entity.pads);
> return ret;
> }
>
> diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
> index caefac07af92..877e85a451cb 100644
> --- a/drivers/media/usb/au0828/au0828-core.c
> +++ b/drivers/media/usb/au0828/au0828-core.c
> @@ -410,7 +410,7 @@ static int au0828_enable_source(struct media_entity *entity,
> goto end;
> }
>
> - ret = __media_pipeline_start(entity, pipe);
> + ret = __media_pipeline_start(entity->pads, pipe);
> if (ret) {
> pr_err("Start Pipeline: %s->%s Error %d\n",
> source->name, entity->name, ret);
> @@ -501,12 +501,12 @@ static void au0828_disable_source(struct media_entity *entity)
> return;
>
> /* stop pipeline */
> - __media_pipeline_stop(dev->active_link_owner);
> + __media_pipeline_stop(dev->active_link_owner->pads);
> pr_debug("Pipeline stop for %s\n",
> dev->active_link_owner->name);
>
> ret = __media_pipeline_start(
> - dev->active_link_user,
> + dev->active_link_user->pads,
> dev->active_link_user_pipe);
> if (ret) {
> pr_err("Start Pipeline: %s->%s %d\n",
> @@ -532,7 +532,7 @@ static void au0828_disable_source(struct media_entity *entity)
> return;
>
> /* stop pipeline */
> - __media_pipeline_stop(dev->active_link_owner);
> + __media_pipeline_stop(dev->active_link_owner->pads);
> pr_debug("Pipeline stop for %s\n",
> dev->active_link_owner->name);
>
> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
> index 945bb867a4c1..397d553177fa 100644
> --- a/drivers/media/v4l2-core/v4l2-dev.c
> +++ b/drivers/media/v4l2-core/v4l2-dev.c
> @@ -1105,7 +1105,7 @@ __must_check int video_device_pipeline_start(struct video_device *vdev,
> if (entity->num_pads != 1)
> return -ENODEV;
>
> - return media_pipeline_start(entity, pipe);
> + return media_pipeline_start(&entity->pads[0], pipe);
> }
> EXPORT_SYMBOL_GPL(video_device_pipeline_start);
>
> @@ -1117,7 +1117,7 @@ __must_check int __video_device_pipeline_start(struct video_device *vdev,
> if (entity->num_pads != 1)
> return -ENODEV;
>
> - return __media_pipeline_start(entity, pipe);
> + return __media_pipeline_start(&entity->pads[0], pipe);
> }
> EXPORT_SYMBOL_GPL(__video_device_pipeline_start);
>
> @@ -1128,7 +1128,7 @@ void video_device_pipeline_stop(struct video_device *vdev)
> if (WARN_ON(entity->num_pads != 1))
> return;
>
> - return media_pipeline_stop(entity);
> + return media_pipeline_stop(&entity->pads[0]);
> }
> EXPORT_SYMBOL_GPL(video_device_pipeline_stop);
>
> @@ -1139,7 +1139,7 @@ void __video_device_pipeline_stop(struct video_device *vdev)
> if (WARN_ON(entity->num_pads != 1))
> return;
>
> - return __media_pipeline_stop(entity);
> + return __media_pipeline_stop(&entity->pads[0]);
> }
> EXPORT_SYMBOL_GPL(__video_device_pipeline_stop);
>
> @@ -1150,7 +1150,7 @@ __must_check int video_device_pipeline_alloc_start(struct video_device *vdev)
> if (entity->num_pads != 1)
> return -ENODEV;
>
> - return media_pipeline_alloc_start(entity);
> + return media_pipeline_alloc_start(&entity->pads[0]);
> }
> EXPORT_SYMBOL_GPL(video_device_pipeline_alloc_start);
>
> @@ -1161,7 +1161,7 @@ struct media_pipeline *video_device_pipeline(struct video_device *vdev)
> if (WARN_ON(entity->num_pads != 1))
> return NULL;
>
> - return media_entity_pipeline(entity);
> + return media_pad_pipeline(&entity->pads[0]);
> }
> EXPORT_SYMBOL_GPL(video_device_pipeline);
>
> diff --git a/drivers/staging/media/imx/imx-media-utils.c b/drivers/staging/media/imx/imx-media-utils.c
> index 5d9c6fc6f2e0..3d785b4e8fe7 100644
> --- a/drivers/staging/media/imx/imx-media-utils.c
> +++ b/drivers/staging/media/imx/imx-media-utils.c
> @@ -863,16 +863,16 @@ int imx_media_pipeline_set_stream(struct imx_media_dev *imxmd,
> mutex_lock(&imxmd->md.graph_mutex);
>
> if (on) {
> - ret = __media_pipeline_start(entity, &imxmd->pipe);
> + ret = __media_pipeline_start(entity->pads, &imxmd->pipe);
> if (ret)
> goto out;
> ret = v4l2_subdev_call(sd, video, s_stream, 1);
> if (ret)
> - __media_pipeline_stop(entity);
> + __media_pipeline_stop(entity->pads);
> } else {
> v4l2_subdev_call(sd, video, s_stream, 0);
> if (media_entity_pipeline(entity))
> - __media_pipeline_stop(entity);
> + __media_pipeline_stop(entity->pads);
> }
>
> out:
> diff --git a/include/media/media-entity.h b/include/media/media-entity.h
> index beea3f6f12b8..f738d0d81194 100644
> --- a/include/media/media-entity.h
> +++ b/include/media/media-entity.h
> @@ -1048,10 +1048,10 @@ struct media_entity *media_graph_walk_next(struct media_graph *graph);
>
> /**
> * media_pipeline_start - Mark a pipeline as streaming
> - * @entity: Starting entity
> - * @pipe: Media pipeline to be assigned to all entities in the pipeline.
> + * @pad: Starting pad
> + * @pipe: Media pipeline to be assigned to all pads in the pipeline.
> *
> - * Mark all entities connected to a given entity through enabled links, either
> + * Mark all pads connected to a given pad through enabled links, either
> * directly or indirectly, as streaming. The given pipeline object is assigned
> * to every entity in the pipeline and stored in the media_entity pipe field.
s/entity/pad/
> *
> @@ -1060,24 +1060,24 @@ struct media_entity *media_graph_walk_next(struct media_graph *graph);
> * pipeline pointer must be identical for all nested calls to
> * media_pipeline_start().
> */
> -__must_check int media_pipeline_start(struct media_entity *entity,
> +__must_check int media_pipeline_start(struct media_pad *pad,
> struct media_pipeline *pipe);
> /**
> * __media_pipeline_start - Mark a pipeline as streaming
> *
> - * @entity: Starting entity
> - * @pipe: Media pipeline to be assigned to all entities in the pipeline.
> + * @pad: Starting pad
> + * @pipe: Media pipeline to be assigned to all pads in the pipeline.
> *
> * ..note:: This is the non-locking version of media_pipeline_start()
> */
> -__must_check int __media_pipeline_start(struct media_entity *entity,
> +__must_check int __media_pipeline_start(struct media_pad *pad,
> struct media_pipeline *pipe);
>
> /**
> * media_pipeline_stop - Mark a pipeline as not streaming
> - * @entity: Starting entity
> + * @pad: Starting pad
> *
> - * Mark all entities connected to a given entity through enabled links, either
> + * Mark all pads connected to a given pads through enabled links, either
> * directly or indirectly, as not streaming. The media_entity pipe field is
This needs to be updated too. Please check the other functions to verify
there's no leftover.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> * reset to %NULL.
> *
> @@ -1085,20 +1085,20 @@ __must_check int __media_pipeline_start(struct media_entity *entity,
> * number of calls to this function are required to mark the pipeline as not
> * streaming.
> */
> -void media_pipeline_stop(struct media_entity *entity);
> +void media_pipeline_stop(struct media_pad *pad);
>
> /**
> * __media_pipeline_stop - Mark a pipeline as not streaming
> *
> - * @entity: Starting entity
> + * @pad: Starting pad
> *
> * .. note:: This is the non-locking version of media_pipeline_stop()
> */
> -void __media_pipeline_stop(struct media_entity *entity);
> +void __media_pipeline_stop(struct media_pad *pad);
>
> /**
> * media_pipeline_alloc_start - Mark a pipeline as streaming
> - * @entity: Starting entity
> + * @pad: Starting pad
> *
> * media_pipeline_alloc_start() is similar to media_pipeline_start() but instead
> * of working on a given pipeline the function will use an existing pipeline if
> @@ -1107,7 +1107,7 @@ void __media_pipeline_stop(struct media_entity *entity);
> * Calls to media_pipeline_alloc_start() must be matched with
> * media_pipeline_stop().
> */
> -__must_check int media_pipeline_alloc_start(struct media_entity *entity);
> +__must_check int media_pipeline_alloc_start(struct media_pad *pad);
>
> /**
> * media_devnode_create() - creates and initializes a device node interface
--
Regards,
Laurent Pinchart
next prev parent reply other threads:[~2022-08-29 17:21 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-10 12:10 [PATCH v13 00/34] v4l: routing and streams support Tomi Valkeinen
2022-08-10 12:10 ` [PATCH v13 01/34] media: Documentation: mc: add definitions for stream and pipeline Tomi Valkeinen
2022-08-29 15:51 ` Laurent Pinchart
2022-08-10 12:10 ` [PATCH v13 02/34] media: media-entity.h: add include for min() Tomi Valkeinen
2022-08-29 16:06 ` Laurent Pinchart
2022-08-10 12:10 ` [PATCH v13 03/34] media: subdev: increase V4L2_FRAME_DESC_ENTRY_MAX to 8 Tomi Valkeinen
2022-08-10 12:10 ` [PATCH v13 04/34] media: mc: entity: Rename streaming_count -> start_count Tomi Valkeinen
2022-08-29 16:08 ` Laurent Pinchart
2022-08-10 12:10 ` [PATCH v13 05/34] media: mc: entity: Add iterator helper for entity pads Tomi Valkeinen
2022-08-10 12:10 ` [PATCH v13 06/34] media: mc: entity: Merge media_entity_enum_init and __media_entity_enum_init Tomi Valkeinen
2022-08-10 12:10 ` [PATCH v13 07/34] media: mc: entity: Move media_entity_get_fwnode_pad() out of graph walk section Tomi Valkeinen
2022-08-10 12:10 ` [PATCH v13 08/34] media: mc: entity: Add media_entity_pipeline() to access the media pipeline Tomi Valkeinen
2022-08-10 12:10 ` [PATCH v13 09/34] media: v4l2-dev: Add videodev wrappers for media pipelines Tomi Valkeinen
2022-08-29 16:34 ` Laurent Pinchart
2022-08-30 10:58 ` Tomi Valkeinen
2022-08-10 12:10 ` [PATCH v13 10/34] media: drivers: use video device pipeline start/stop Tomi Valkeinen
2022-08-29 16:41 ` Laurent Pinchart
2022-08-10 12:10 ` [PATCH v13 11/34] media: drivers: use video_device_pipeline() Tomi Valkeinen
2022-08-29 16:48 ` Laurent Pinchart
2022-08-10 12:11 ` [PATCH v13 12/34] media: mc: entity: add alloc variant of pipeline_start Tomi Valkeinen
2022-08-29 16:57 ` Laurent Pinchart
2022-08-30 11:08 ` Tomi Valkeinen
2022-08-30 11:42 ` Laurent Pinchart
2022-08-10 12:11 ` [PATCH v13 13/34] media: drivers: use video_device_pipeline_alloc_start() Tomi Valkeinen
2022-08-29 17:00 ` Laurent Pinchart
2022-08-30 11:20 ` Tomi Valkeinen
2022-08-30 11:46 ` Laurent Pinchart
2022-08-10 12:11 ` [PATCH v13 14/34] media: mc: entity: Rewrite media_pipeline_start() Tomi Valkeinen
2022-08-29 17:18 ` Laurent Pinchart
2022-08-30 11:44 ` Tomi Valkeinen
2022-08-30 12:40 ` Tomi Valkeinen
2022-09-06 8:48 ` Laurent Pinchart
2022-09-06 9:22 ` Tomi Valkeinen
2022-08-31 14:21 ` Tomi Valkeinen
2022-09-06 8:44 ` Laurent Pinchart
2022-09-06 9:19 ` Tomi Valkeinen
2022-09-06 12:58 ` Sakari Ailus
2022-09-06 13:51 ` Laurent Pinchart
2022-08-10 12:11 ` [PATCH v13 15/34] media: mc: entity: Add has_pad_interdep entity operation Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 16/34] media: mc: convert pipeline funcs to take media_pad Tomi Valkeinen
2022-08-29 17:21 ` Laurent Pinchart [this message]
2022-08-30 12:05 ` Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 17/34] media: add V4L2_SUBDEV_FL_STREAMS Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 18/34] media: add V4L2_SUBDEV_CAP_STREAMS Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 19/34] media: Documentation: Add GS_ROUTING documentation Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 20/34] media: subdev: Add [GS]_ROUTING subdev ioctls and operations Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 21/34] media: subdev: add v4l2_subdev_has_pad_interdep() Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 22/34] media: subdev: add v4l2_subdev_set_routing helper() Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 23/34] media: subdev: Add for_each_active_route() macro Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 24/34] media: Documentation: add multiplexed streams documentation Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 25/34] media: subdev: add stream based configuration Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 26/34] media: subdev: use streams in v4l2_subdev_link_validate() Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 27/34] media: subdev: add "opposite" stream helper funcs Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 28/34] media: subdev: add streams to v4l2_subdev_get_fmt() helper function Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 29/34] media: subdev: add v4l2_subdev_set_routing_with_fmt() helper Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 30/34] media: subdev: add v4l2_subdev_routing_validate() helper Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 31/34] media: v4l2-subdev: Add v4l2_subdev_state_xlate_streams() helper Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 32/34] media: v4l2-subdev: Add subdev .(enable|disable)_streams() operations Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 33/34] media: v4l2-subdev: Add v4l2_subdev_s_stream_helper() function Tomi Valkeinen
2022-08-10 12:11 ` [PATCH v13 34/34] media: Add stream to frame descriptor Tomi Valkeinen
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