diff options
Diffstat (limited to 'drivers/media/v4l2-core/v4l2-mc.c')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-mc.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-mc.c b/drivers/media/v4l2-core/v4l2-mc.c index 4a1efa827fe2..643686d40551 100644 --- a/drivers/media/v4l2-core/v4l2-mc.c +++ b/drivers/media/v4l2-core/v4l2-mc.c @@ -2,6 +2,7 @@ * Media Controller ancillary functions * * Copyright (c) 2016 Mauro Carvalho Chehab <mchehab@osg.samsung.com> + * Copyright (C) 2016 Shuah Khan <shuahkh@osg.samsung.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -16,7 +17,10 @@ #include <linux/module.h> #include <media/media-entity.h> +#include <media/media-device.h> +#include <media/v4l2-fh.h> #include <media/v4l2-mc.h> +#include <media/videobuf2-core.h> int v4l2_mc_create_media_graph(struct media_device *mdev) @@ -182,3 +186,34 @@ int v4l2_mc_create_media_graph(struct media_device *mdev) return 0; } EXPORT_SYMBOL_GPL(v4l2_mc_create_media_graph); + +int v4l_enable_media_source(struct video_device *vdev) +{ + struct media_device *mdev = vdev->entity.graph_obj.mdev; + int ret; + + if (!mdev || !mdev->enable_source) + return 0; + ret = mdev->enable_source(&vdev->entity, &vdev->pipe); + if (ret) + return -EBUSY; + return 0; +} +EXPORT_SYMBOL_GPL(v4l_enable_media_source); + +void v4l_disable_media_source(struct video_device *vdev) +{ + struct media_device *mdev = vdev->entity.graph_obj.mdev; + + if (mdev && mdev->disable_source) + mdev->disable_source(&vdev->entity); +} +EXPORT_SYMBOL_GPL(v4l_disable_media_source); + +int v4l_vb2q_enable_media_source(struct vb2_queue *q) +{ + struct v4l2_fh *fh = q->owner; + + return v4l_enable_media_source(fh->vdev); +} +EXPORT_SYMBOL_GPL(v4l_vb2q_enable_media_source); |