[06/30] media: entity: Use pad as the starting point for a pipeline

Message ID	20180823132544.521-7-niklas.soderlund+renesas@ragnatech.se (mailing list archive)
State	Not Applicable
Headers	show Return-Path: <linux-renesas-soc-owner@kernel.org> Authorized-sender: niklas@soderlund.pp.se From: =?utf-8?q?Niklas_S=C3=B6derlund?= <niklas.soderlund+renesas@ragnatech.se> To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>, Sakari Ailus <sakari.ailus@linux.intel.com>, linux-media@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= <niklas.soderlund+renesas@ragnatech.se> Subject: [PATCH 06/30] media: entity: Use pad as the starting point for a pipeline Date: Thu, 23 Aug 2018 15:25:20 +0200 Message-Id: <20180823132544.521-7-niklas.soderlund+renesas@ragnatech.se> In-Reply-To: <20180823132544.521-1-niklas.soderlund+renesas@ragnatech.se> References: <20180823132544.521-1-niklas.soderlund+renesas@ragnatech.se> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk
Series	v4l: add support for multiplexed streams \| expand [00/30] v4l: add support for multiplexed streams [01/30] media: entity: Use pad as a starting point for graph walk [02/30] media: entity: Use pads instead of entities in the media graph walk stack [03/30] media: entity: Walk the graph based on pads [04/30] v4l: mc: Start walk from a specific pad in use count calculation [05/30] media: entity: Move the pipeline from entity to pads [06/30] media: entity: Use pad as the starting point for a pipeline [07/30] media: entity: Add has_route entity operation [08/30] media: entity: Add media_has_route() function [09/30] media: entity: Swap pads if route is checked from source to sink [10/30] media: entity: Use routing information during graph traversal [11/30] media: entity: Skip link validation for pads to which there is no route to [12/30] media: entity: Add an iterator helper for connected pads [13/30] media: entity: Add only connected pads to the pipeline [14/30] media: entity: Add debug information in graph walk route check [15/30] media: entity: Look for indirect routes [16/30] v4l: subdev: Add [GS]_ROUTING subdev ioctls and operations [17/30] v4l: subdev: compat: Implement handling for VIDIOC_SUBDEV_[GS]_ROUTING [18/30] v4l: subdev: Take routing information into account in link validation [19/30] v4l: subdev: Improve link format validation debug messages [20/30] v4l: mc: Add an S_ROUTING helper function for power state changes [21/30] v4l: Add bus type to frame descriptors [22/30] v4l: Add CSI-2 bus configuration to frame descriptors [23/30] v4l: Add stream to frame descriptor [24/30] adv748x: csi2: add translation from pixelcode to CSI-2 datatype [25/30] adv748x: csi2: only allow formats on sink pads [26/30] adv748x: csi2: describe the multiplexed stream [27/30] adv748x: csi2: add internal routing configuration [28/30] adv748x: afe: add routing support [29/30] rcar-csi2: use frame description information to configure CSI-2 bus [30/30] rcar-csi2: expose the subdevice internal routing

diff --git a/Documentation/media/kapi/mc-core.rst b/Documentation/media/kapi/mc-core.rst index 849b87439b7a9772..ede7e946f6a82ac0 100644 --- a/Documentation/media/kapi/mc-core.rst +++ b/Documentation/media/kapi/mc-core.rst @@ -211,11 +211,11 @@ When starting streaming, drivers must notify all entities in the pipeline to prevent link states from being modified during streaming by calling :c:func:`media_pipeline_start()`. -The function will mark all entities connected to the given entity through -enabled links, either directly or indirectly, as streaming. +The function will mark all entities connected to the given pad through +enabled routes and links, either directly or indirectly, as streaming. The struct :c:type:`media_pipeline` instance pointed to by -the pipe argument will be stored in every entity in the pipeline. +the pipe argument will be stored in every pad in the pipeline. Drivers should embed the struct :c:type:`media_pipeline` in higher-level pipeline structures and can then access the pipeline through the struct :c:type:`media_entity` diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 239036a7582cbc95..2722c38a822d7787 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -411,12 +411,11 @@ EXPORT_SYMBOL_GPL(media_entity_get_fwnode_pad); * Pipeline management */ -__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->graph_obj.mdev; struct media_graph *graph = &pipe->graph; - struct media_pad *pad = entity->pads; struct media_pad *pad_err = pad; struct media_link *link; int ret = 0; @@ -549,24 +548,23 @@ __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->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_graph *graph = &pipe->graph; - struct media_pad *pad; /* * If the following check fails, the driver has performed an @@ -575,9 +573,10 @@ void __media_pipeline_stop(struct media_entity *entity) if (WARN_ON(!pipe)) return; - media_graph_walk_start(graph, entity->pads); + media_graph_walk_start(graph, pad); while ((pad = media_graph_walk_next(graph))) { + struct media_entity *entity = pad->entity; unsigned int i; for (i = 0; i < entity->num_pads; i++) { @@ -598,12 +597,12 @@ 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->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); diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2.c b/drivers/media/pci/intel/ipu3/ipu3-cio2.c index 29027159eced88a5..7eb16e45c8069f4b 100644 --- a/drivers/media/pci/intel/ipu3/ipu3-cio2.c +++ b/drivers/media/pci/intel/ipu3/ipu3-cio2.c @@ -1002,7 +1002,7 @@ static int cio2_vb2_start_streaming(struct vb2_queue *vq, unsigned int count) return r; } - r = media_pipeline_start(&q->vdev.entity, &q->pipe); + r = media_pipeline_start(q->vdev.entity.pads, &q->pipe); if (r) goto fail_pipeline; @@ -1022,7 +1022,7 @@ static int cio2_vb2_start_streaming(struct vb2_queue *vq, unsigned int count) fail_csi2_subdev: cio2_hw_exit(cio2, q); fail_hw: - media_pipeline_stop(&q->vdev.entity); + media_pipeline_stop(q->vdev.entity.pads); fail_pipeline: dev_dbg(&cio2->pci_dev->dev, "failed to start streaming (%d)\n", r); cio2_vb2_return_all_buffers(q, VB2_BUF_STATE_QUEUED); @@ -1043,7 +1043,7 @@ static void cio2_vb2_stop_streaming(struct vb2_queue *vq) cio2_hw_exit(cio2, q); synchronize_irq(cio2->pci_dev->irq); cio2_vb2_return_all_buffers(q, VB2_BUF_STATE_ERROR); - media_pipeline_stop(&q->vdev.entity); + media_pipeline_stop(q->vdev.entity.pads); pm_runtime_put(&cio2->pci_dev->dev); cio2->streaming = false; } diff --git a/drivers/media/platform/exynos4-is/fimc-capture.c b/drivers/media/platform/exynos4-is/fimc-capture.c index a3cdac18819043df..88efbfbe8f61c0dc 100644 --- a/drivers/media/platform/exynos4-is/fimc-capture.c +++ b/drivers/media/platform/exynos4-is/fimc-capture.c @@ -537,7 +537,7 @@ static int fimc_capture_release(struct file *file) mutex_lock(&fimc->lock); if (close && vc->streaming) { - media_pipeline_stop(&vc->ve.vdev.entity); + media_pipeline_stop(vc->ve.vdev.entity.pads); vc->streaming = false; } @@ -1201,7 +1201,7 @@ static int fimc_cap_streamon(struct file *file, void *priv, if (fimc_capture_active(fimc)) return -EBUSY; - ret = media_pipeline_start(entity, &vc->ve.pipe->mp); + ret = media_pipeline_start(entity->pads, &vc->ve.pipe->mp); if (ret < 0) return ret; @@ -1235,7 +1235,7 @@ static int fimc_cap_streamon(struct file *file, void *priv, } err_p_stop: - media_pipeline_stop(entity); + media_pipeline_stop(entity->pads); return ret; } @@ -1250,7 +1250,7 @@ static int fimc_cap_streamoff(struct file *file, void *priv, if (ret < 0) return ret; - media_pipeline_stop(&vc->ve.vdev.entity); + media_pipeline_stop(vc->ve.vdev.entity.pads); vc->streaming = false; return 0; } diff --git a/drivers/media/platform/exynos4-is/fimc-isp-video.c b/drivers/media/platform/exynos4-is/fimc-isp-video.c index a920164f53f1f0ab..d0a40ab0b7e92362 100644 --- a/drivers/media/platform/exynos4-is/fimc-isp-video.c +++ b/drivers/media/platform/exynos4-is/fimc-isp-video.c @@ -312,7 +312,7 @@ static int isp_video_release(struct file *file) mutex_lock(&isp->video_lock); if (v4l2_fh_is_singular_file(file) && ivc->streaming) { - media_pipeline_stop(entity); + media_pipeline_stop(entity->pads); ivc->streaming = 0; } @@ -494,7 +494,7 @@ static int isp_video_streamon(struct file *file, void *priv, struct media_entity *me = &ve->vdev.entity; int ret; - ret = media_pipeline_start(me, &ve->pipe->mp); + ret = media_pipeline_start(me->pads, &ve->pipe->mp); if (ret < 0) return ret; @@ -509,7 +509,7 @@ static int isp_video_streamon(struct file *file, void *priv, isp->video_capture.streaming = 1; return 0; p_stop: - media_pipeline_stop(me); + media_pipeline_stop(me->pads); return ret; } @@ -524,7 +524,7 @@ static int isp_video_streamoff(struct file *file, void *priv, if (ret < 0) return ret; - media_pipeline_stop(&video->ve.vdev.entity); + media_pipeline_stop(video->ve.vdev.entity.pads); video->streaming = 0; return 0; } diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c b/drivers/media/platform/exynos4-is/fimc-lite.c index f486eeed805b0bbc..e99a8c1a68541077 100644 --- a/drivers/media/platform/exynos4-is/fimc-lite.c +++ b/drivers/media/platform/exynos4-is/fimc-lite.c @@ -524,7 +524,7 @@ static int fimc_lite_release(struct file *file) if (v4l2_fh_is_singular_file(file) && atomic_read(&fimc->out_path) == FIMC_IO_DMA) { if (fimc->streaming) { - media_pipeline_stop(entity); + media_pipeline_stop(entity->pads); fimc->streaming = false; } fimc_lite_stop_capture(fimc, false); @@ -832,7 +832,7 @@ static int fimc_lite_streamon(struct file *file, void *priv, if (fimc_lite_active(fimc)) return -EBUSY; - ret = media_pipeline_start(entity, &fimc->ve.pipe->mp); + ret = media_pipeline_start(entity->pads, &fimc->ve.pipe->mp); if (ret < 0) return ret; @@ -849,7 +849,7 @@ static int fimc_lite_streamon(struct file *file, void *priv, } err_p_stop: - media_pipeline_stop(entity); + media_pipeline_stop(entity->pads); return 0; } @@ -863,7 +863,7 @@ static int fimc_lite_streamoff(struct file *file, void *priv, if (ret < 0) return ret; - media_pipeline_stop(&fimc->ve.vdev.entity); + media_pipeline_stop(fimc->ve.vdev.entity.pads); fimc->streaming = false; return 0; } diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c index 5ac7ac8c98d52ac8..a9613c31a6b87e3c 100644 --- a/drivers/media/platform/omap3isp/ispvideo.c +++ b/drivers/media/platform/omap3isp/ispvideo.c @@ -1113,7 +1113,7 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) pipe->l3_ick = clk_get_rate(video->isp->clock[ISP_CLK_L3_ICK]); pipe->max_rate = pipe->l3_ick; - ret = media_pipeline_start(&video->video.entity, &pipe->pipe); + ret = media_pipeline_start(video->video.entity.pads, &pipe->pipe); if (ret < 0) goto err_pipeline_start; @@ -1170,7 +1170,7 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) return 0; err_check_format: - media_pipeline_stop(&video->video.entity); + media_pipeline_stop(video->video.entity.pads); err_pipeline_start: /* TODO: Implement PM QoS */ /* The DMA queue must be emptied here, otherwise CCDC interrupts that @@ -1237,7 +1237,7 @@ isp_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type) video->error = false; /* TODO: Implement PM QoS */ - media_pipeline_stop(&video->video.entity); + media_pipeline_stop(video->video.entity.pads); media_entity_enum_cleanup(&pipe->ent_enum); diff --git a/drivers/media/platform/qcom/camss/camss-video.c b/drivers/media/platform/qcom/camss/camss-video.c index c9bb0d023db480d1..8e828755c391ba48 100644 --- a/drivers/media/platform/qcom/camss/camss-video.c +++ b/drivers/media/platform/qcom/camss/camss-video.c @@ -436,7 +436,7 @@ static int video_start_streaming(struct vb2_queue *q, unsigned int count) struct v4l2_subdev *subdev; int ret; - ret = media_pipeline_start(&vdev->entity, &video->pipe); + ret = media_pipeline_start(vdev->entity.pads, &video->pipe); if (ret < 0) return ret; @@ -465,7 +465,7 @@ static int video_start_streaming(struct vb2_queue *q, unsigned int count) return 0; error: - media_pipeline_stop(&vdev->entity); + media_pipeline_stop(vdev->entity.pads); video->ops->flush_buffers(video, VB2_BUF_STATE_QUEUED); @@ -496,7 +496,7 @@ static void video_stop_streaming(struct vb2_queue *q) v4l2_subdev_call(subdev, video, s_stream, 0); } - media_pipeline_stop(&vdev->entity); + media_pipeline_stop(vdev->entity.pads); video->ops->flush_buffers(video, VB2_BUF_STATE_ERROR); } diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c index e749096926f34d4a..57c2087f7ad472f3 100644 --- a/drivers/media/platform/rcar-vin/rcar-dma.c +++ b/drivers/media/platform/rcar-vin/rcar-dma.c @@ -1112,7 +1112,7 @@ static int rvin_set_stream(struct rvin_dev *vin, int on) sd = media_entity_to_v4l2_subdev(pad->entity); if (!on) { - media_pipeline_stop(&vin->vdev.entity); + media_pipeline_stop(vin->vdev.entity.pads); return v4l2_subdev_call(sd, video, s_stream, 0); } @@ -1129,7 +1129,7 @@ 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.pads->pipe ? sd->entity.pads->pipe : &vin->vdev.pipe; - ret = __media_pipeline_start(&vin->vdev.entity, pipe); + ret = __media_pipeline_start(vin->vdev.entity.pads, pipe); mutex_unlock(&mdev->graph_mutex); if (ret) return ret; @@ -1138,7 +1138,7 @@ static int rvin_set_stream(struct rvin_dev *vin, int on) if (ret == -ENOIOCTLCMD) ret = 0; if (ret) - media_pipeline_stop(&vin->vdev.entity); + media_pipeline_stop(vin->vdev.entity.pads); return ret; } diff --git a/drivers/media/platform/s3c-camif/camif-capture.c b/drivers/media/platform/s3c-camif/camif-capture.c index c02dce8b4c6c788b..3d7b92f0da33a5f9 100644 --- a/drivers/media/platform/s3c-camif/camif-capture.c +++ b/drivers/media/platform/s3c-camif/camif-capture.c @@ -858,13 +858,13 @@ 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; } @@ -888,7 +888,7 @@ 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/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c index 88a1e5670c725101..de3fee15f0a73493 100644 --- a/drivers/media/platform/vimc/vimc-capture.c +++ b/drivers/media/platform/vimc/vimc-capture.c @@ -247,7 +247,7 @@ static int vimc_cap_start_streaming(struct vb2_queue *vq, unsigned int count) vcap->sequence = 0; /* Start the media pipeline */ - ret = media_pipeline_start(entity, &vcap->pipe); + ret = media_pipeline_start(entity->pads, &vcap->pipe); if (ret) { vimc_cap_return_all_buffers(vcap, VB2_BUF_STATE_QUEUED); return ret; @@ -256,7 +256,7 @@ static int vimc_cap_start_streaming(struct vb2_queue *vq, unsigned int count) /* Enable streaming from the pipe */ ret = vimc_pipeline_s_stream(&vcap->vdev.entity, 1); if (ret) { - media_pipeline_stop(entity); + media_pipeline_stop(entity->pads); vimc_cap_return_all_buffers(vcap, VB2_BUF_STATE_QUEUED); return ret; } @@ -276,7 +276,7 @@ static void vimc_cap_stop_streaming(struct vb2_queue *vq) vimc_pipeline_s_stream(&vcap->vdev.entity, 0); /* Stop the media pipeline */ - media_pipeline_stop(&vcap->vdev.entity); + media_pipeline_stop(vcap->vdev.entity.pads); /* Release all active buffers */ vimc_cap_return_all_buffers(vcap, VB2_BUF_STATE_ERROR); diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c index f3e7f239e90c5f7d..241d2efbced27359 100644 --- a/drivers/media/platform/vsp1/vsp1_video.c +++ b/drivers/media/platform/vsp1/vsp1_video.c @@ -940,7 +940,7 @@ static void vsp1_video_stop_streaming(struct vb2_queue *vq) } mutex_unlock(&pipe->lock); - media_pipeline_stop(&video->video.entity); + media_pipeline_stop(video->video.entity.pads); vsp1_video_release_buffers(video); vsp1_video_pipeline_put(pipe); } @@ -1067,7 +1067,7 @@ vsp1_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) return PTR_ERR(pipe); } - ret = __media_pipeline_start(&video->video.entity, &pipe->pipe); + ret = __media_pipeline_start(video->video.entity.pads, &pipe->pipe); if (ret < 0) { mutex_unlock(&mdev->graph_mutex); goto err_pipe; @@ -1091,7 +1091,7 @@ vsp1_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) return 0; err_stop: - media_pipeline_stop(&video->video.entity); + media_pipeline_stop(video->video.entity.pads); err_pipe: vsp1_video_pipeline_put(pipe); return ret; diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c index 9ea9a58eec632b7b..0fc948fe1a1aa0d8 100644 --- a/drivers/media/platform/xilinx/xilinx-dma.c +++ b/drivers/media/platform/xilinx/xilinx-dma.c @@ -409,7 +409,7 @@ static int xvip_dma_start_streaming(struct vb2_queue *vq, unsigned int count) pipe = dma->video.entity.pads->pipe ? to_xvip_pipeline(&dma->video.entity) : &dma->pipe; - ret = media_pipeline_start(&dma->video.entity, &pipe->pipe); + ret = media_pipeline_start(dma->video.entity.pads, &pipe->pipe); if (ret < 0) goto error; @@ -435,7 +435,7 @@ static int xvip_dma_start_streaming(struct vb2_queue *vq, unsigned int count) return 0; error_stop: - media_pipeline_stop(&dma->video.entity); + media_pipeline_stop(dma->video.entity.pads); error: /* Give back all queued buffers to videobuf2. */ @@ -463,7 +463,7 @@ static void xvip_dma_stop_streaming(struct vb2_queue *vq) /* Cleanup the pipeline and mark it as being stopped. */ xvip_pipeline_cleanup(pipe); - media_pipeline_stop(&dma->video.entity); + media_pipeline_stop(dma->video.entity.pads); /* Give back all queued buffers to videobuf2. */ spin_lock_irq(&dma->queued_lock); diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c index cd363a2100d453c6..b649f11a45b586f2 100644 --- a/drivers/media/usb/au0828/au0828-core.c +++ b/drivers/media/usb/au0828/au0828-core.c @@ -394,7 +394,7 @@ 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); @@ -445,7 +445,7 @@ static void au0828_disable_source(struct media_entity *entity) */ if (dev->active_link_owner != entity) return; - __media_pipeline_stop(entity); + __media_pipeline_stop(entity->pads); ret = __media_entity_setup_link(dev->active_link, 0); if (ret) pr_err("Deactivate link Error %d\n", ret); diff --git a/drivers/staging/media/imx/imx-media-utils.c b/drivers/staging/media/imx/imx-media-utils.c index 1cfa77a96e610f6c..b89e3f369d1b3686 100644 --- a/drivers/staging/media/imx/imx-media-utils.c +++ b/drivers/staging/media/imx/imx-media-utils.c @@ -909,16 +909,16 @@ 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 (entity->pads->pipe) - __media_pipeline_stop(entity); + __media_pipeline_stop(entity->pads); } out: diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c index d1d91a79992a61bc..6ff6b75de4db80a1 100644 --- a/drivers/staging/media/omap4iss/iss_video.c +++ b/drivers/staging/media/omap4iss/iss_video.c @@ -898,7 +898,7 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) if (video->iss->pdata->set_constraints) video->iss->pdata->set_constraints(video->iss, true); - ret = media_pipeline_start(pad->entity, &pipe->pipe); + ret = media_pipeline_start(pad, &pipe->pipe); if (ret < 0) goto err_media_pipeline_start; @@ -987,7 +987,7 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) err_omap4iss_set_stream: vb2_streamoff(&vfh->queue, type); err_iss_video_check_format: - media_pipeline_stop(&video->video.entity); + media_pipeline_stop(video->video.entity.pads); err_media_pipeline_start: if (video->iss->pdata->set_constraints) video->iss->pdata->set_constraints(video->iss, false); @@ -1041,7 +1041,7 @@ iss_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type) if (video->iss->pdata->set_constraints) video->iss->pdata->set_constraints(video->iss, false); - media_pipeline_stop(&video->video.entity); + media_pipeline_stop(video->video.entity.pads); done: mutex_unlock(&video->stream_lock); diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 4f68638153679a36..532c438b9eb862c5 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -917,53 +917,54 @@ struct media_pad *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 - * 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. + * Mark all pads connected to a given pad through enabled + * routes or links, either directly or indirectly, as streaming. The + * given pipeline object is assigned to every pad in the pipeline + * and stored in the media_pad pipe field. * * Calls to this function can be nested, in which case the same number of * media_pipeline_stop() calls will be required to stop streaming. The * 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 - * directly or indirectly, as not streaming. The media_entity pipe field is - * reset to %NULL. + * Mark all pads connected to a given pad through enabled routes or + * links, either directly or indirectly, as not streaming. The + * media_pad pipe field is reset to %NULL. * * If multiple calls to media_pipeline_start() have been made, the same * 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_devnode_create() - creates and initializes a device node interface

[06/30] media: entity: Use pad as the starting point for a pipeline

Commit Message

Patch