| Message ID | 20220727103639.581567-6-tomi.valkeinen@ideasonboard.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | v4l: routing and streams support | expand |
Moi, On Wed, Jul 27, 2022 at 01:36:14PM +0300, Tomi Valkeinen wrote: > From: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > > Replace direct access to the pipe field in drivers with a new helper > function. This will allow easier refactoring of media pipeline handling > in the MC core behind the scenes without affecting drivers. > > Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> > --- > drivers/media/mc/mc-entity.c | 6 ++++++ > .../platform/renesas/rcar-vin/rcar-core.c | 5 ++--- > .../media/platform/renesas/rcar-vin/rcar-dma.c | 2 +- > drivers/media/platform/ti/omap3isp/isp.c | 4 +--- > drivers/media/platform/ti/omap3isp/ispvideo.c | 3 +-- > drivers/media/platform/ti/omap3isp/ispvideo.h | 11 +++++++++-- > drivers/media/platform/xilinx/xilinx-dma.c | 3 +-- > drivers/media/platform/xilinx/xilinx-dma.h | 7 ++++++- > drivers/staging/media/imx/imx-media-utils.c | 2 +- > drivers/staging/media/omap4iss/iss.c | 4 +--- > drivers/staging/media/omap4iss/iss_video.c | 3 +-- > drivers/staging/media/omap4iss/iss_video.h | 11 +++++++++-- > include/media/media-entity.h | 18 ++++++++++++++++++ > 13 files changed, 57 insertions(+), 22 deletions(-) > > diff --git a/drivers/media/mc/mc-entity.c b/drivers/media/mc/mc-entity.c > index 9f4a1c98dc43..50872d953cf9 100644 > --- a/drivers/media/mc/mc-entity.c > +++ b/drivers/media/mc/mc-entity.c > @@ -923,6 +923,12 @@ int media_entity_get_fwnode_pad(struct media_entity *entity, > } > EXPORT_SYMBOL_GPL(media_entity_get_fwnode_pad); > > +struct media_pipeline *media_entity_pipeline(struct media_entity *entity) > +{ > + return entity->pipe; I'd make this an inline function. Or do you plan to add more code later? > +} > +EXPORT_SYMBOL_GPL(media_entity_pipeline); > + > static void media_interface_init(struct media_device *mdev, > struct media_interface *intf, > u32 gobj_type, > diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-core.c b/drivers/media/platform/renesas/rcar-vin/rcar-core.c > index 49bdcfba010b..7b12af3ed8fb 100644 > --- a/drivers/media/platform/renesas/rcar-vin/rcar-core.c > +++ b/drivers/media/platform/renesas/rcar-vin/rcar-core.c > @@ -786,9 +786,8 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags, > return 0; > > /* > - * Don't allow link changes if any entity in the graph is > - * streaming, modifying the CHSEL register fields can disrupt > - * running streams. > + * Don't allow link changes if any stream in the graph is active as > + * modifying the CHSEL register fields can disrupt running streams. > */ > media_device_for_each_entity(entity, &group->mdev) > if (media_entity_is_streaming(entity)) > diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-dma.c b/drivers/media/platform/renesas/rcar-vin/rcar-dma.c > index 6644b498929d..924907b71263 100644 > --- a/drivers/media/platform/renesas/rcar-vin/rcar-dma.c > +++ b/drivers/media/platform/renesas/rcar-vin/rcar-dma.c > @@ -1281,7 +1281,7 @@ static int rvin_set_stream(struct rvin_dev *vin, int on) > */ > mdev = vin->vdev.entity.graph_obj.mdev; > mutex_lock(&mdev->graph_mutex); > - pipe = sd->entity.pipe ? sd->entity.pipe : &vin->vdev.pipe; > + pipe = media_entity_pipeline(&sd->entity) ? : &vin->vdev.pipe; > ret = __media_pipeline_start(&vin->vdev.entity, pipe); > mutex_unlock(&mdev->graph_mutex); > if (ret) > diff --git a/drivers/media/platform/ti/omap3isp/isp.c b/drivers/media/platform/ti/omap3isp/isp.c > index 4c937f3f323e..2b5310b07bc3 100644 > --- a/drivers/media/platform/ti/omap3isp/isp.c > +++ b/drivers/media/platform/ti/omap3isp/isp.c > @@ -937,10 +937,8 @@ static int isp_pipeline_is_last(struct media_entity *me) > struct isp_pipeline *pipe; > struct media_pad *pad; > > - if (!me->pipe) > - return 0; > pipe = to_isp_pipeline(me); > - if (pipe->stream_state == ISP_PIPELINE_STREAM_STOPPED) > + if (!pipe || pipe->stream_state == ISP_PIPELINE_STREAM_STOPPED) > return 0; > pad = media_entity_remote_pad(&pipe->output->pad); > return pad->entity == me; > diff --git a/drivers/media/platform/ti/omap3isp/ispvideo.c b/drivers/media/platform/ti/omap3isp/ispvideo.c > index 8811d6dd4ee7..44b0d55ee5d8 100644 > --- a/drivers/media/platform/ti/omap3isp/ispvideo.c > +++ b/drivers/media/platform/ti/omap3isp/ispvideo.c > @@ -1093,8 +1093,7 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) > /* Start streaming on the pipeline. No link touching an entity in the > * pipeline can be activated or deactivated once streaming is started. > */ > - pipe = video->video.entity.pipe > - ? to_isp_pipeline(&video->video.entity) : &video->pipe; > + pipe = to_isp_pipeline(&video->video.entity) ? : &video->pipe; > > ret = media_entity_enum_init(&pipe->ent_enum, &video->isp->media_dev); > if (ret) > diff --git a/drivers/media/platform/ti/omap3isp/ispvideo.h b/drivers/media/platform/ti/omap3isp/ispvideo.h > index a0908670c0cf..1d23df576e6b 100644 > --- a/drivers/media/platform/ti/omap3isp/ispvideo.h > +++ b/drivers/media/platform/ti/omap3isp/ispvideo.h > @@ -99,8 +99,15 @@ struct isp_pipeline { > unsigned int external_width; > }; > > -#define to_isp_pipeline(__e) \ > - container_of((__e)->pipe, struct isp_pipeline, pipe) > +static inline struct isp_pipeline *to_isp_pipeline(struct media_entity *entity) > +{ > + struct media_pipeline *pipe = media_entity_pipeline(entity); > + > + if (!pipe) > + return NULL; > + > + return container_of(pipe, struct isp_pipeline, pipe); > +} > > static inline int isp_pipeline_ready(struct isp_pipeline *pipe) > { > diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c > index 338c3661d809..72eff5ef626b 100644 > --- a/drivers/media/platform/xilinx/xilinx-dma.c > +++ b/drivers/media/platform/xilinx/xilinx-dma.c > @@ -402,8 +402,7 @@ static int xvip_dma_start_streaming(struct vb2_queue *vq, unsigned int count) > * Use the pipeline object embedded in the first DMA object that starts > * streaming. > */ > - pipe = dma->video.entity.pipe > - ? to_xvip_pipeline(&dma->video.entity) : &dma->pipe; > + pipe = to_xvip_pipeline(&dma->video.entity) ? : &dma->pipe; > > ret = media_pipeline_start(&dma->video.entity, &pipe->pipe); > if (ret < 0) > diff --git a/drivers/media/platform/xilinx/xilinx-dma.h b/drivers/media/platform/xilinx/xilinx-dma.h > index 2378bdae57ae..3ea10f6b0bb9 100644 > --- a/drivers/media/platform/xilinx/xilinx-dma.h > +++ b/drivers/media/platform/xilinx/xilinx-dma.h > @@ -47,7 +47,12 @@ struct xvip_pipeline { > > static inline struct xvip_pipeline *to_xvip_pipeline(struct media_entity *e) > { > - return container_of(e->pipe, struct xvip_pipeline, pipe); > + struct media_pipeline *pipe = media_entity_pipeline(e); > + > + if (!pipe) > + return NULL; > + > + return container_of(pipe, struct xvip_pipeline, pipe); > } > > /** > diff --git a/drivers/staging/media/imx/imx-media-utils.c b/drivers/staging/media/imx/imx-media-utils.c > index 94bc866ca28c..5d9c6fc6f2e0 100644 > --- a/drivers/staging/media/imx/imx-media-utils.c > +++ b/drivers/staging/media/imx/imx-media-utils.c > @@ -871,7 +871,7 @@ int imx_media_pipeline_set_stream(struct imx_media_dev *imxmd, > __media_pipeline_stop(entity); > } else { > v4l2_subdev_call(sd, video, s_stream, 0); > - if (entity->pipe) > + if (media_entity_pipeline(entity)) > __media_pipeline_stop(entity); > } > > diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c > index 68588e9dab0b..77760d913b49 100644 > --- a/drivers/staging/media/omap4iss/iss.c > +++ b/drivers/staging/media/omap4iss/iss.c > @@ -548,10 +548,8 @@ static int iss_pipeline_is_last(struct media_entity *me) > struct iss_pipeline *pipe; > struct media_pad *pad; > > - if (!me->pipe) > - return 0; > pipe = to_iss_pipeline(me); > - if (pipe->stream_state == ISS_PIPELINE_STREAM_STOPPED) > + if (!pipe || pipe->stream_state == ISS_PIPELINE_STREAM_STOPPED) > return 0; > pad = media_entity_remote_pad(&pipe->output->pad); > return pad->entity == me; > diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c > index d0da083deed5..67d63a400fa2 100644 > --- a/drivers/staging/media/omap4iss/iss_video.c > +++ b/drivers/staging/media/omap4iss/iss_video.c > @@ -870,8 +870,7 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) > * Start streaming on the pipeline. No link touching an entity in the > * pipeline can be activated or deactivated once streaming is started. > */ > - pipe = entity->pipe > - ? to_iss_pipeline(entity) : &video->pipe; > + pipe = to_iss_pipeline(&video->video.entity) ? : &video->pipe; s/&video->video\.// > pipe->external = NULL; > pipe->external_rate = 0; > pipe->external_bpp = 0; > diff --git a/drivers/staging/media/omap4iss/iss_video.h b/drivers/staging/media/omap4iss/iss_video.h > index 526281bf0051..ca2d5edb6261 100644 > --- a/drivers/staging/media/omap4iss/iss_video.h > +++ b/drivers/staging/media/omap4iss/iss_video.h > @@ -90,8 +90,15 @@ struct iss_pipeline { > int external_bpp; > }; > > -#define to_iss_pipeline(__e) \ > - container_of((__e)->pipe, struct iss_pipeline, pipe) > +static inline struct iss_pipeline *to_iss_pipeline(struct media_entity *entity) > +{ > + struct media_pipeline *pipe = media_entity_pipeline(entity); > + > + if (!pipe) > + return NULL; > + > + return container_of(pipe, struct iss_pipeline, pipe); > +} > > static inline int iss_pipeline_ready(struct iss_pipeline *pipe) > { > diff --git a/include/media/media-entity.h b/include/media/media-entity.h > index 4e4fec60bf97..96f5fcda1985 100644 > --- a/include/media/media-entity.h > +++ b/include/media/media-entity.h > @@ -883,6 +883,24 @@ static inline bool media_entity_is_streaming(const struct media_entity *entity) > return entity->pipe; > } > > +/** > + * media_entity_pipeline - Get the media pipeline an entity is part of > + * @entity: The entity > + * > + * This function returns the media pipeline that an entity has been associated > + * with when constructing the pipeline with media_pipeline_start(). The pointer > + * remains valid until media_pipeline_stop() is called. > + * > + * In general, entities can be part of multiple pipelines, when carrying > + * multiple streams (either on different pads, or on the same pad using > + * multiplexed streams). This function is ill-defined in that case. It > + * currently returns the pipeline associated with the first pad of the entity. > + * > + * Return: The media_pipeline the entity is part of, or NULL if the entity is > + * not part of any pipeline. > + */ > +struct media_pipeline *media_entity_pipeline(struct media_entity *entity); > + > /** > * media_entity_get_fwnode_pad - Get pad number from fwnode > *
On 30/07/2022 14:21, Sakari Ailus wrote: > Moi, > > On Wed, Jul 27, 2022 at 01:36:14PM +0300, Tomi Valkeinen wrote: >> From: Laurent Pinchart <laurent.pinchart@ideasonboard.com> >> >> Replace direct access to the pipe field in drivers with a new helper >> function. This will allow easier refactoring of media pipeline handling >> in the MC core behind the scenes without affecting drivers. >> >> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> >> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> >> --- >> drivers/media/mc/mc-entity.c | 6 ++++++ >> .../platform/renesas/rcar-vin/rcar-core.c | 5 ++--- >> .../media/platform/renesas/rcar-vin/rcar-dma.c | 2 +- >> drivers/media/platform/ti/omap3isp/isp.c | 4 +--- >> drivers/media/platform/ti/omap3isp/ispvideo.c | 3 +-- >> drivers/media/platform/ti/omap3isp/ispvideo.h | 11 +++++++++-- >> drivers/media/platform/xilinx/xilinx-dma.c | 3 +-- >> drivers/media/platform/xilinx/xilinx-dma.h | 7 ++++++- >> drivers/staging/media/imx/imx-media-utils.c | 2 +- >> drivers/staging/media/omap4iss/iss.c | 4 +--- >> drivers/staging/media/omap4iss/iss_video.c | 3 +-- >> drivers/staging/media/omap4iss/iss_video.h | 11 +++++++++-- >> include/media/media-entity.h | 18 ++++++++++++++++++ >> 13 files changed, 57 insertions(+), 22 deletions(-) >> >> diff --git a/drivers/media/mc/mc-entity.c b/drivers/media/mc/mc-entity.c >> index 9f4a1c98dc43..50872d953cf9 100644 >> --- a/drivers/media/mc/mc-entity.c >> +++ b/drivers/media/mc/mc-entity.c >> @@ -923,6 +923,12 @@ int media_entity_get_fwnode_pad(struct media_entity *entity, >> } >> EXPORT_SYMBOL_GPL(media_entity_get_fwnode_pad); >> >> +struct media_pipeline *media_entity_pipeline(struct media_entity *entity) >> +{ >> + return entity->pipe; > > I'd make this an inline function. Or do you plan to add more code later? I have this in my work tree due to comments from Satish: struct media_pipeline *media_entity_pipeline(struct media_entity *entity) { struct media_pipeline *pipe; struct media_pad *pad; if (entity->num_pads == 0) return NULL; pipe = entity->pads->pipe; media_entity_for_each_pad(entity, pad) { if (WARN_ON(pad->pipe != pipe)) return NULL; } return pipe; } Tomi
diff --git a/drivers/media/mc/mc-entity.c b/drivers/media/mc/mc-entity.c index 9f4a1c98dc43..50872d953cf9 100644 --- a/drivers/media/mc/mc-entity.c +++ b/drivers/media/mc/mc-entity.c @@ -923,6 +923,12 @@ int media_entity_get_fwnode_pad(struct media_entity *entity, } EXPORT_SYMBOL_GPL(media_entity_get_fwnode_pad); +struct media_pipeline *media_entity_pipeline(struct media_entity *entity) +{ + return entity->pipe; +} +EXPORT_SYMBOL_GPL(media_entity_pipeline); + static void media_interface_init(struct media_device *mdev, struct media_interface *intf, u32 gobj_type, diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-core.c b/drivers/media/platform/renesas/rcar-vin/rcar-core.c index 49bdcfba010b..7b12af3ed8fb 100644 --- a/drivers/media/platform/renesas/rcar-vin/rcar-core.c +++ b/drivers/media/platform/renesas/rcar-vin/rcar-core.c @@ -786,9 +786,8 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags, return 0; /* - * Don't allow link changes if any entity in the graph is - * streaming, modifying the CHSEL register fields can disrupt - * running streams. + * Don't allow link changes if any stream in the graph is active as + * modifying the CHSEL register fields can disrupt running streams. */ media_device_for_each_entity(entity, &group->mdev) if (media_entity_is_streaming(entity)) diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-dma.c b/drivers/media/platform/renesas/rcar-vin/rcar-dma.c index 6644b498929d..924907b71263 100644 --- a/drivers/media/platform/renesas/rcar-vin/rcar-dma.c +++ b/drivers/media/platform/renesas/rcar-vin/rcar-dma.c @@ -1281,7 +1281,7 @@ static int rvin_set_stream(struct rvin_dev *vin, int on) */ mdev = vin->vdev.entity.graph_obj.mdev; mutex_lock(&mdev->graph_mutex); - pipe = sd->entity.pipe ? sd->entity.pipe : &vin->vdev.pipe; + pipe = media_entity_pipeline(&sd->entity) ? : &vin->vdev.pipe; ret = __media_pipeline_start(&vin->vdev.entity, pipe); mutex_unlock(&mdev->graph_mutex); if (ret) diff --git a/drivers/media/platform/ti/omap3isp/isp.c b/drivers/media/platform/ti/omap3isp/isp.c index 4c937f3f323e..2b5310b07bc3 100644 --- a/drivers/media/platform/ti/omap3isp/isp.c +++ b/drivers/media/platform/ti/omap3isp/isp.c @@ -937,10 +937,8 @@ static int isp_pipeline_is_last(struct media_entity *me) struct isp_pipeline *pipe; struct media_pad *pad; - if (!me->pipe) - return 0; pipe = to_isp_pipeline(me); - if (pipe->stream_state == ISP_PIPELINE_STREAM_STOPPED) + if (!pipe || pipe->stream_state == ISP_PIPELINE_STREAM_STOPPED) return 0; pad = media_entity_remote_pad(&pipe->output->pad); return pad->entity == me; diff --git a/drivers/media/platform/ti/omap3isp/ispvideo.c b/drivers/media/platform/ti/omap3isp/ispvideo.c index 8811d6dd4ee7..44b0d55ee5d8 100644 --- a/drivers/media/platform/ti/omap3isp/ispvideo.c +++ b/drivers/media/platform/ti/omap3isp/ispvideo.c @@ -1093,8 +1093,7 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) /* Start streaming on the pipeline. No link touching an entity in the * pipeline can be activated or deactivated once streaming is started. */ - pipe = video->video.entity.pipe - ? to_isp_pipeline(&video->video.entity) : &video->pipe; + pipe = to_isp_pipeline(&video->video.entity) ? : &video->pipe; ret = media_entity_enum_init(&pipe->ent_enum, &video->isp->media_dev); if (ret) diff --git a/drivers/media/platform/ti/omap3isp/ispvideo.h b/drivers/media/platform/ti/omap3isp/ispvideo.h index a0908670c0cf..1d23df576e6b 100644 --- a/drivers/media/platform/ti/omap3isp/ispvideo.h +++ b/drivers/media/platform/ti/omap3isp/ispvideo.h @@ -99,8 +99,15 @@ struct isp_pipeline { unsigned int external_width; }; -#define to_isp_pipeline(__e) \ - container_of((__e)->pipe, struct isp_pipeline, pipe) +static inline struct isp_pipeline *to_isp_pipeline(struct media_entity *entity) +{ + struct media_pipeline *pipe = media_entity_pipeline(entity); + + if (!pipe) + return NULL; + + return container_of(pipe, struct isp_pipeline, pipe); +} static inline int isp_pipeline_ready(struct isp_pipeline *pipe) { diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c index 338c3661d809..72eff5ef626b 100644 --- a/drivers/media/platform/xilinx/xilinx-dma.c +++ b/drivers/media/platform/xilinx/xilinx-dma.c @@ -402,8 +402,7 @@ static int xvip_dma_start_streaming(struct vb2_queue *vq, unsigned int count) * Use the pipeline object embedded in the first DMA object that starts * streaming. */ - pipe = dma->video.entity.pipe - ? to_xvip_pipeline(&dma->video.entity) : &dma->pipe; + pipe = to_xvip_pipeline(&dma->video.entity) ? : &dma->pipe; ret = media_pipeline_start(&dma->video.entity, &pipe->pipe); if (ret < 0) diff --git a/drivers/media/platform/xilinx/xilinx-dma.h b/drivers/media/platform/xilinx/xilinx-dma.h index 2378bdae57ae..3ea10f6b0bb9 100644 --- a/drivers/media/platform/xilinx/xilinx-dma.h +++ b/drivers/media/platform/xilinx/xilinx-dma.h @@ -47,7 +47,12 @@ struct xvip_pipeline { static inline struct xvip_pipeline *to_xvip_pipeline(struct media_entity *e) { - return container_of(e->pipe, struct xvip_pipeline, pipe); + struct media_pipeline *pipe = media_entity_pipeline(e); + + if (!pipe) + return NULL; + + return container_of(pipe, struct xvip_pipeline, pipe); } /** diff --git a/drivers/staging/media/imx/imx-media-utils.c b/drivers/staging/media/imx/imx-media-utils.c index 94bc866ca28c..5d9c6fc6f2e0 100644 --- a/drivers/staging/media/imx/imx-media-utils.c +++ b/drivers/staging/media/imx/imx-media-utils.c @@ -871,7 +871,7 @@ int imx_media_pipeline_set_stream(struct imx_media_dev *imxmd, __media_pipeline_stop(entity); } else { v4l2_subdev_call(sd, video, s_stream, 0); - if (entity->pipe) + if (media_entity_pipeline(entity)) __media_pipeline_stop(entity); } diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c index 68588e9dab0b..77760d913b49 100644 --- a/drivers/staging/media/omap4iss/iss.c +++ b/drivers/staging/media/omap4iss/iss.c @@ -548,10 +548,8 @@ static int iss_pipeline_is_last(struct media_entity *me) struct iss_pipeline *pipe; struct media_pad *pad; - if (!me->pipe) - return 0; pipe = to_iss_pipeline(me); - if (pipe->stream_state == ISS_PIPELINE_STREAM_STOPPED) + if (!pipe || pipe->stream_state == ISS_PIPELINE_STREAM_STOPPED) return 0; pad = media_entity_remote_pad(&pipe->output->pad); return pad->entity == me; diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c index d0da083deed5..67d63a400fa2 100644 --- a/drivers/staging/media/omap4iss/iss_video.c +++ b/drivers/staging/media/omap4iss/iss_video.c @@ -870,8 +870,7 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) * Start streaming on the pipeline. No link touching an entity in the * pipeline can be activated or deactivated once streaming is started. */ - pipe = entity->pipe - ? to_iss_pipeline(entity) : &video->pipe; + pipe = to_iss_pipeline(&video->video.entity) ? : &video->pipe; pipe->external = NULL; pipe->external_rate = 0; pipe->external_bpp = 0; diff --git a/drivers/staging/media/omap4iss/iss_video.h b/drivers/staging/media/omap4iss/iss_video.h index 526281bf0051..ca2d5edb6261 100644 --- a/drivers/staging/media/omap4iss/iss_video.h +++ b/drivers/staging/media/omap4iss/iss_video.h @@ -90,8 +90,15 @@ struct iss_pipeline { int external_bpp; }; -#define to_iss_pipeline(__e) \ - container_of((__e)->pipe, struct iss_pipeline, pipe) +static inline struct iss_pipeline *to_iss_pipeline(struct media_entity *entity) +{ + struct media_pipeline *pipe = media_entity_pipeline(entity); + + if (!pipe) + return NULL; + + return container_of(pipe, struct iss_pipeline, pipe); +} static inline int iss_pipeline_ready(struct iss_pipeline *pipe) { diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 4e4fec60bf97..96f5fcda1985 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -883,6 +883,24 @@ static inline bool media_entity_is_streaming(const struct media_entity *entity) return entity->pipe; } +/** + * media_entity_pipeline - Get the media pipeline an entity is part of + * @entity: The entity + * + * This function returns the media pipeline that an entity has been associated + * with when constructing the pipeline with media_pipeline_start(). The pointer + * remains valid until media_pipeline_stop() is called. + * + * In general, entities can be part of multiple pipelines, when carrying + * multiple streams (either on different pads, or on the same pad using + * multiplexed streams). This function is ill-defined in that case. It + * currently returns the pipeline associated with the first pad of the entity. + * + * Return: The media_pipeline the entity is part of, or NULL if the entity is + * not part of any pipeline. + */ +struct media_pipeline *media_entity_pipeline(struct media_entity *entity); + /** * media_entity_get_fwnode_pad - Get pad number from fwnode *