On 01/28/2016 08:26 AM, Mauro Carvalho Chehab wrote:
Em Wed, 6 Jan 2016 13:26:57 -0700 Shuah Khan shuahkh@osg.samsung.com escreveu:
Add a new interfaces to be used by v4l-core to invoke enable source and disable_source handlers in the media_device. The enable_source helper function invokes the enable_source handler to find tuner entity connected to the decoder and check is it is available or busy. If tuner is available, link is activated and pipeline is started. The disable_source helper function invokes the disable_source handler to deactivate and stop the pipeline.
Signed-off-by: Shuah Khan shuahkh@osg.samsung.com
drivers/media/v4l2-core/v4l2-dev.c | 27 +++++++++++++++++++++++++++ include/media/v4l2-dev.h | 4 ++++ 2 files changed, 31 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index d8e5994..f06da6e 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -233,6 +233,33 @@ struct video_device *video_devdata(struct file *file) } EXPORT_SYMBOL(video_devdata);
+int v4l_enable_media_tuner(struct video_device *vdev)
IMHO, the better is to put those MC ancillary routines on a separate file. Hans suggested to add them at v4l2-mc.h and v4l2-mc.h.
ok I can do that.
+{ +#ifdef CONFIG_MEDIA_CONTROLLER
- 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;
+#endif /* CONFIG_MEDIA_CONTROLLER */
- return 0;
+} +EXPORT_SYMBOL_GPL(v4l_enable_media_tuner);
+void v4l_disable_media_tuner(struct video_device *vdev) +{ +#ifdef CONFIG_MEDIA_CONTROLLER
- struct media_device *mdev = vdev->entity.graph_obj.mdev;
- if (mdev && mdev->disable_source)
mdev->disable_source(&vdev->entity);+#endif /* CONFIG_MEDIA_CONTROLLER */ +} +EXPORT_SYMBOL_GPL(v4l_disable_media_tuner);
/* Priority handling */
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h index eeabf20..68999a3 100644 --- a/include/media/v4l2-dev.h +++ b/include/media/v4l2-dev.h @@ -87,6 +87,7 @@ struct video_device #if defined(CONFIG_MEDIA_CONTROLLER) struct media_entity entity; struct media_intf_devnode *intf_devnode;
- struct media_pipeline pipe;
#endif /* device ops */ const struct v4l2_file_operations *fops; @@ -176,6 +177,9 @@ void video_unregister_device(struct video_device *vdev); latter can also be used for video_device->release(). */ struct video_device * __must_check video_device_alloc(void);
+int v4l_enable_media_tuner(struct video_device *vdev); +void v4l_disable_media_tuner(struct video_device *vdev);
Documentation?
Since I am going to be adding a new source file, I can add documentation in the same patch.
thanks, -- Shuah
/* this release function frees the vdev pointer */ void video_device_release(struct video_device *vdev);