Merge branch 'mana-shared-6.2' of https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Long Li says:

====================
Introduce Microsoft Azure Network Adapter (MANA) RDMA driver [netdev prep]

The first 11 patches which modify the MANA Ethernet driver to support
RDMA driver.

* 'mana-shared-6.2' of https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  net: mana: Define data structures for protection domain and memory registration
  net: mana: Define data structures for allocating doorbell page from GDMA
  net: mana: Define and process GDMA response code GDMA_STATUS_MORE_ENTRIES
  net: mana: Define max values for SGL entries
  net: mana: Move header files to a common location
  net: mana: Record port number in netdev
  net: mana: Export Work Queue functions for use by RDMA driver
  net: mana: Set the DMA device max segment size
  net: mana: Handle vport sharing between devices
  net: mana: Record the physical address for doorbell page region
  net: mana: Add support for auxiliary device
====================

Link: https://lore.kernel.org/all/[email protected]/
Signed-off-by: Leon Romanovsky <[email protected]>

1 files changed, 72 insertions, 0 deletions

diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
index d00237ee4cae..397d553177fa 100644
--- a/drivers/media/v4l2-core/v4l2-dev.c
+++ b/drivers/media/v4l2-core/v4l2-dev.c
@@ -1095,6 +1095,78 @@ void video_unregister_device(struct video_device *vdev)
 }
 EXPORT_SYMBOL(video_unregister_device);
 
+#if defined(CONFIG_MEDIA_CONTROLLER)
+
+__must_check int video_device_pipeline_start(struct video_device *vdev,
+					     struct media_pipeline *pipe)
+{
+	struct media_entity *entity = &vdev->entity;
+
+	if (entity->num_pads != 1)
+		return -ENODEV;
+
+	return media_pipeline_start(&entity->pads[0], pipe);
+}
+EXPORT_SYMBOL_GPL(video_device_pipeline_start);
+
+__must_check int __video_device_pipeline_start(struct video_device *vdev,
+					       struct media_pipeline *pipe)
+{
+	struct media_entity *entity = &vdev->entity;
+
+	if (entity->num_pads != 1)
+		return -ENODEV;
+
+	return __media_pipeline_start(&entity->pads[0], pipe);
+}
+EXPORT_SYMBOL_GPL(__video_device_pipeline_start);
+
+void video_device_pipeline_stop(struct video_device *vdev)
+{
+	struct media_entity *entity = &vdev->entity;
+
+	if (WARN_ON(entity->num_pads != 1))
+		return;
+
+	return media_pipeline_stop(&entity->pads[0]);
+}
+EXPORT_SYMBOL_GPL(video_device_pipeline_stop);
+
+void __video_device_pipeline_stop(struct video_device *vdev)
+{
+	struct media_entity *entity = &vdev->entity;
+
+	if (WARN_ON(entity->num_pads != 1))
+		return;
+
+	return __media_pipeline_stop(&entity->pads[0]);
+}
+EXPORT_SYMBOL_GPL(__video_device_pipeline_stop);
+
+__must_check int video_device_pipeline_alloc_start(struct video_device *vdev)
+{
+	struct media_entity *entity = &vdev->entity;
+
+	if (entity->num_pads != 1)
+		return -ENODEV;
+
+	return media_pipeline_alloc_start(&entity->pads[0]);
+}
+EXPORT_SYMBOL_GPL(video_device_pipeline_alloc_start);
+
+struct media_pipeline *video_device_pipeline(struct video_device *vdev)
+{
+	struct media_entity *entity = &vdev->entity;
+
+	if (WARN_ON(entity->num_pads != 1))
+		return NULL;
+
+	return media_pad_pipeline(&entity->pads[0]);
+}
+EXPORT_SYMBOL_GPL(video_device_pipeline);
+
+#endif /* CONFIG_MEDIA_CONTROLLER */
+
 /*
  *	Initialise video for linux
  */