@@ -583,17 +583,21 @@ void dvb_create_media_graph(struct dvb_adapter *adap)
media_create_intf_link(ca, intf, 0);
if (intf->type == MEDIA_INTF_T_DVB_FE && tuner)
- media_create_intf_link(tuner, intf, 0);
+ media_create_intf_link(tuner, intf,
+ MEDIA_LNK_FL_ENABLED);
if (intf->type == MEDIA_INTF_T_DVB_DVR && demux)
- media_create_intf_link(demux, intf, 0);
+ media_create_intf_link(demux, intf,
+ MEDIA_LNK_FL_ENABLED);
media_device_for_each_entity(entity, mdev) {
if (entity->type == MEDIA_ENT_T_DVB_TSOUT) {
if (!strcmp(entity->name, DVR_TSOUT))
- media_create_intf_link(entity, intf, 0);
+ media_create_intf_link(entity, intf,
+ MEDIA_LNK_FL_ENABLED);
if (!strcmp(entity->name, DEMUX_TSOUT))
- media_create_intf_link(entity, intf, 0);
+ media_create_intf_link(entity, intf,
+ MEDIA_LNK_FL_ENABLED);
break;
}
}
@@ -787,7 +787,8 @@ static int video_register_media_controller(struct video_device *vdev, int type)
if (create_entity)
media_create_intf_link(&vdev->entity,
- &vdev->intf_devnode->intf, 0);
+ &vdev->intf_devnode->intf,
+ MEDIA_LNK_FL_ENABLED);
/* FIXME: how to create the other interface links? */
@@ -253,7 +253,8 @@ int v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev)
/* Interface is created by __video_register_device() */
if (vdev->v4l2_dev->mdev)
media_create_intf_link(&sd->entity,
- &vdev->intf_devnode->intf, 0);
+ &vdev->intf_devnode->intf,
+ MEDIA_LNK_FL_ENABLED);
#endif
sd->devnode = vdev;
}
Interface links are normally enabled, meaning that the interfaces are bound to the entities. So, any ioctl send to the interface are reflected at the entities managed by the interface. However, when a device is usage, other interfaces for the same hardware could be decoupled from the entities linked to them, because the hardware may have some parts busy. That's for example, what happens when an hybrid TV device is in usage. If it is streaming analog TV or capturing signals from S-Video/Composite connectors, typically the digital part of the hardware can't be used and vice-versa. This is generally due to some internal hardware or firmware limitation, that it is not easily mapped via data pipelines. What the Kernel drivers do internally is that they decouple the hardware from the interface. So, all changes, if allowed, are done only at some interface cache, but not physically changed at the hardware. The usage is similar to the usage of the MEDIA_LNK_FL_ENABLED on data links. So, let's use the same flag to indicate if ether the interface to entity link is bound/enabled or not. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>